-/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "ofproto/ofproto-dpif-xlate.h"
#include <errno.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include "tnl-neigh-cache.h"
#include "bfd.h"
#include "bitmap.h"
#include "bond.h"
#include "cfm.h"
#include "connmgr.h"
#include "coverage.h"
+#include "dp-packet.h"
#include "dpif.h"
#include "dynamic-string.h"
#include "in-band.h"
#include "lacp.h"
#include "learn.h"
#include "list.h"
+#include "ovs-lldp.h"
#include "mac-learning.h"
+#include "mcast-snooping.h"
#include "meta-flow.h"
#include "multipath.h"
#include "netdev-vport.h"
#include "ofproto/ofproto-dpif-sflow.h"
#include "ofproto/ofproto-dpif.h"
#include "ofproto/ofproto-provider.h"
+#include "packets.h"
+#include "ovs-router.h"
+#include "tnl-ports.h"
#include "tunnel.h"
-#include "vlog.h"
+#include "openvswitch/vlog.h"
COVERAGE_DEFINE(xlate_actions);
COVERAGE_DEFINE(xlate_actions_oversize);
-COVERAGE_DEFINE(xlate_actions_mpls_overflow);
+COVERAGE_DEFINE(xlate_actions_too_many_output);
VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate);
* recursive or not. */
#define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION)
-struct ovs_rwlock xlate_rwlock = OVS_RWLOCK_INITIALIZER;
-
struct xbridge {
struct hmap_node hmap_node; /* Node in global 'xbridges' map. */
struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */
- struct list xbundles; /* Owned xbundles. */
+ struct ovs_list xbundles; /* Owned xbundles. */
struct hmap xports; /* Indexed by ofp_port. */
char *name; /* Name used in log messages. */
struct dpif *dpif; /* Datapath interface. */
struct mac_learning *ml; /* Mac learning handle. */
+ struct mcast_snooping *ms; /* Multicast Snooping handle. */
struct mbridge *mbridge; /* Mirroring. */
struct dpif_sflow *sflow; /* SFlow handle, or null. */
struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */
struct netflow *netflow; /* Netflow handle, or null. */
struct stp *stp; /* STP or null if disabled. */
+ struct rstp *rstp; /* RSTP or null if disabled. */
- /* Special rules installed by ofproto-dpif. */
- struct rule_dpif *miss_rule;
- struct rule_dpif *no_packet_in_rule;
-
- enum ofp_config_flags frag; /* Fragmentation handling. */
bool has_in_band; /* Bridge has in band control? */
bool forward_bpdu; /* Bridge forwards STP BPDUs? */
- /* True if the datapath supports recirculation. */
- bool enable_recirc;
-
- /* True if the datapath supports variable-length
- * OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
- * False if the datapath supports only 8-byte (or shorter) userdata. */
- bool variable_length_userdata;
-
- /* Number of MPLS label stack entries that the datapath supports
- * in matches. */
- size_t max_mpls_depth;
+ /* Datapath feature support. */
+ struct dpif_backer_support support;
};
struct xbundle {
struct hmap_node hmap_node; /* In global 'xbundles' map. */
struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */
- struct list list_node; /* In parent 'xbridges' list. */
+ struct ovs_list list_node; /* In parent 'xbridges' list. */
struct xbridge *xbridge; /* Parent xbridge. */
- struct list xports; /* Contains "struct xport"s. */
+ struct ovs_list xports; /* Contains "struct xport"s. */
char *name; /* Name used in log messages. */
struct bond *bond; /* Nonnull iff more than one port. */
odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */
- struct list bundle_node; /* In parent xbundle (if it exists). */
+ struct ovs_list bundle_node; /* In parent xbundle (if it exists). */
struct xbundle *xbundle; /* Parent xbundle or null. */
struct netdev *netdev; /* 'ofport''s netdev. */
enum ofputil_port_config config; /* OpenFlow port configuration. */
enum ofputil_port_state state; /* OpenFlow port state. */
int stp_port_no; /* STP port number or -1 if not in use. */
+ struct rstp_port *rstp_port; /* RSTP port or null. */
struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */
struct cfm *cfm; /* CFM handle or null. */
struct bfd *bfd; /* BFD handle or null. */
+ struct lldp *lldp; /* LLDP handle or null. */
};
struct xlate_ctx {
const struct xbridge *xbridge;
+ /* Flow tables version at the beginning of the translation. */
+ cls_version_t tables_version;
+
/* Flow at the last commit. */
struct flow base_flow;
* which might lead to an infinite loop. This could happen easily
* if a tunnel is marked as 'ip_remote=flow', and the flow does not
* actually set the tun_dst field. */
- ovs_be32 orig_tunnel_ip_dst;
+ struct in6_addr orig_tunnel_ipv6_dst;
/* Stack for the push and pop actions. Each stack element is of type
* "union mf_subvalue". */
- union mf_subvalue init_stack[1024 / sizeof(union mf_subvalue)];
struct ofpbuf stack;
/* The rule that we are currently translating, or NULL. */
struct rule_dpif *rule;
+ /* Flow translation populates this with wildcards relevant in translation.
+ * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is
+ * null, this is a pointer to uninitialized scratch memory. This allows
+ * code to blindly write to 'ctx->wc' without worrying about whether the
+ * caller really wants wildcards. */
+ struct flow_wildcards *wc;
+
+ /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull,
+ * this is the same pointer. When 'xin->odp_actions' is null, this points
+ * to a scratch ofpbuf. This allows code to add actions to
+ * 'ctx->odp_actions' without worrying about whether the caller really
+ * wants actions. */
+ struct ofpbuf *odp_actions;
+
/* Resubmit statistics, via xlate_table_action(). */
int recurse; /* Current resubmit nesting depth. */
int resubmits; /* Total number of resubmits. */
bool in_group; /* Currently translating ofgroup, if true. */
+ bool in_action_set; /* Currently translating action_set, if true. */
- uint32_t orig_skb_priority; /* Priority when packet arrived. */
uint8_t table_id; /* OpenFlow table ID where flow was found. */
+ ovs_be64 rule_cookie; /* Cookie of the rule being translated. */
+ uint32_t orig_skb_priority; /* Priority when packet arrived. */
uint32_t sflow_n_outputs; /* Number of output ports. */
odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */
- uint16_t user_cookie_offset;/* Used for user_action_cookie fixup. */
+ ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */
bool exit; /* No further actions should be processed. */
+ mirror_mask_t mirrors; /* Bitmap of associated mirrors. */
+
+ /* Freezing Translation
+ * ====================
+ *
+ * At some point during translation, the code may recognize the need to halt
+ * and checkpoint the translation in a way that it can be restarted again
+ * later. We call the checkpointing process "freezing" and the restarting
+ * process "thawing".
+ *
+ * The use cases for freezing are:
+ *
+ * - "Recirculation", where the translation process discovers that it
+ * doesn't have enough information to complete translation without
+ * actually executing the actions that have already been translated,
+ * which provides the additionally needed information. In these
+ * situations, translation freezes translation and assigns the frozen
+ * data a unique "recirculation ID", which it associates with the data
+ * in a table in userspace (see ofproto-dpif-rid.h). It also adds a
+ * OVS_ACTION_ATTR_RECIRC action specifying that ID to the datapath
+ * actions. When a packet hits that action, the datapath looks its
+ * flow up again using the ID. If there's a miss, it comes back to
+ * userspace, which find the recirculation table entry for the ID,
+ * thaws the associated frozen data, and continues translation from
+ * that point given the additional information that is now known.
+ *
+ * The archetypal example is MPLS. As MPLS is implemented in
+ * OpenFlow, the protocol that follows the last MPLS label becomes
+ * known only when that label is popped by an OpenFlow action. That
+ * means that Open vSwitch can't extract the headers beyond the MPLS
+ * labels until the pop action is executed. Thus, at that point
+ * translation uses the recirculation process to extract the headers
+ * beyond the MPLS labels.
+ *
+ * (OVS also uses OVS_ACTION_ATTR_RECIRC to implement hashing for
+ * output to bonds. OVS pre-populates all the datapath flows for bond
+ * output in the datapath, though, which means that the elaborate
+ * process of coming back to userspace for a second round of
+ * translation isn't needed, and so bonds don't follow the above
+ * process.)
+ *
+ * - "Continuation". A continuation is a way for an OpenFlow controller
+ * to interpose on a packet's traversal of the OpenFlow tables. When
+ * the translation process encounters a "controller" action with the
+ * "pause" flag, it freezes translation, serializes the frozen data,
+ * and sends it to an OpenFlow controller. The controller then
+ * examines and possibly modifies the frozen data and eventually sends
+ * it back to the switch, which thaws it and continues translation.
+ *
+ * The main problem of freezing translation is preserving state, so that
+ * when the translation is thawed later it resumes from where it left off,
+ * without disruption. In particular, actions must be preserved as follows:
+ *
+ * - If we're freezing because an action needed more information, the
+ * action that prompted it.
+ *
+ * - Any actions remaining to be translated within the current flow.
+ *
+ * - If translation was frozen within a NXAST_RESUBMIT, then any actions
+ * following the resubmit action. Resubmit actions can be nested, so
+ * this has to go all the way up the control stack.
+ *
+ * - The OpenFlow 1.1+ action set.
+ *
+ * State that actions and flow table lookups can depend on, such as the
+ * following, must also be preserved:
+ *
+ * - Metadata fields (input port, registers, OF1.1+ metadata, ...).
+ *
+ * - The stack used by NXAST_STACK_PUSH and NXAST_STACK_POP actions.
+ *
+ * - The table ID and cookie of the flow being translated at each level
+ * of the control stack, because these can become visible through
+ * OFPAT_CONTROLLER actions (and other ways).
+ *
+ * Translation allows for the control of this state preservation via these
+ * members. When a need to freeze translation is identified, the
+ * translation process:
+ *
+ * 1. Sets 'freezing' to true.
+ *
+ * 2. Sets 'exit' to true to tell later steps that we're exiting from the
+ * translation process.
+ *
+ * 3. Adds an OFPACT_UNROLL_XLATE action to 'frozen_actions', and points
+ * frozen_actions.header to the action to make it easy to find it later.
+ * This action holds the current table ID and cookie so that they can be
+ * restored during a post-recirculation upcall translation.
+ *
+ * 4. Adds the action that prompted recirculation and any actions following
+ * it within the same flow to 'frozen_actions', so that they can be
+ * executed during a post-recirculation upcall translation.
+ *
+ * 5. Returns.
+ *
+ * 6. The action that prompted recirculation might be nested in a stack of
+ * nested "resubmit"s that have actions remaining. Each of these notices
+ * that we're exiting and freezing and responds by adding more
+ * OFPACT_UNROLL_XLATE actions to 'frozen_actions', as necessary,
+ * followed by any actions that were yet unprocessed.
+ *
+ * If we're freezing because of recirculation, the caller generates a
+ * recirculation ID and associates all the state produced by this process
+ * with it. For post-recirculation upcall translation, the caller passes it
+ * back in for the new translation to execute. The process yielded a set of
+ * ofpacts that can be translated directly, so it is not much of a special
+ * case at that point.
+ */
+ bool freezing;
+ struct ofpbuf frozen_actions;
+ const struct ofpact_controller *pause;
+
+ /* True if a packet was but is no longer MPLS (due to an MPLS pop action).
+ * This is a trigger for recirculation in cases where translating an action
+ * or looking up a flow requires access to the fields of the packet after
+ * the MPLS label stack that was originally present. */
+ bool was_mpls;
+
+ /* True if conntrack has been performed on this packet during processing
+ * on the current bridge. This is used to determine whether conntrack
+ * state from the datapath should be honored after thawing. */
+ bool conntracked;
+
+ /* Pointer to an embedded NAT action in a conntrack action, or NULL. */
+ struct ofpact_nat *ct_nat_action;
/* OpenFlow 1.1+ action set.
*
* 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS.
* When translation is otherwise complete, ofpacts_execute_action_set()
* converts it to a set of "struct ofpact"s that can be translated into
- * datapath actions. */
+ * datapath actions. */
+ bool action_set_has_group; /* Action set contains OFPACT_GROUP? */
struct ofpbuf action_set; /* Action set. */
- uint64_t action_set_stub[1024 / 8];
+
+ enum xlate_error error; /* Translation failed. */
};
+const char *xlate_strerror(enum xlate_error error)
+{
+ switch (error) {
+ case XLATE_OK:
+ return "OK";
+ case XLATE_BRIDGE_NOT_FOUND:
+ return "Bridge not found";
+ case XLATE_RECURSION_TOO_DEEP:
+ return "Recursion too deep";
+ case XLATE_TOO_MANY_RESUBMITS:
+ return "Too many resubmits";
+ case XLATE_STACK_TOO_DEEP:
+ return "Stack too deep";
+ case XLATE_NO_RECIRCULATION_CONTEXT:
+ return "No recirculation context";
+ case XLATE_RECIRCULATION_CONFLICT:
+ return "Recirculation conflict";
+ case XLATE_TOO_MANY_MPLS_LABELS:
+ return "Too many MPLS labels";
+ }
+ return "Unknown error";
+}
+
+static void xlate_action_set(struct xlate_ctx *ctx);
+static void xlate_commit_actions(struct xlate_ctx *ctx);
+
+static void
+ctx_trigger_freeze(struct xlate_ctx *ctx)
+{
+ ctx->exit = true;
+ ctx->freezing = true;
+}
+
+static bool
+ctx_first_frozen_action(const struct xlate_ctx *ctx)
+{
+ return !ctx->frozen_actions.size;
+}
+
+static void
+ctx_cancel_freeze(struct xlate_ctx *ctx)
+{
+ if (ctx->freezing) {
+ ctx->freezing = false;
+ ofpbuf_clear(&ctx->frozen_actions);
+ ctx->frozen_actions.header = NULL;
+ }
+}
+
+static void finish_freezing(struct xlate_ctx *ctx);
+
/* A controller may use OFPP_NONE as the ingress port to indicate that
* it did not arrive on a "real" port. 'ofpp_none_bundle' exists for
* when an input bundle is needed for validation (e.g., mirroring or
XC_LEARN,
XC_NORMAL,
XC_FIN_TIMEOUT,
+ XC_GROUP,
+ XC_TNL_NEIGH,
};
/* xlate_cache entries hold enough information to perform the side effects of
} bond;
struct {
struct ofproto_dpif *ofproto;
- struct rule_dpif *rule;
+ struct ofputil_flow_mod *fm;
+ struct ofpbuf *ofpacts;
} learn;
struct {
struct ofproto_dpif *ofproto;
uint16_t idle;
uint16_t hard;
} fin;
+ struct {
+ struct group_dpif *group;
+ struct ofputil_bucket *bucket;
+ } group;
+ struct {
+ char br_name[IFNAMSIZ];
+ struct in6_addr d_ipv6;
+ } tnl_neigh_cache;
} u;
};
-#define XC_ENTRY_FOR_EACH(entry, entries, xcache) \
- entries = xcache->entries; \
- for (entry = ofpbuf_try_pull(&entries, sizeof *entry); \
- entry; \
- entry = ofpbuf_try_pull(&entries, sizeof *entry))
+#define XC_ENTRY_FOR_EACH(ENTRY, ENTRIES, XCACHE) \
+ ENTRIES = XCACHE->entries; \
+ for (ENTRY = ofpbuf_try_pull(&ENTRIES, sizeof *ENTRY); \
+ ENTRY; \
+ ENTRY = ofpbuf_try_pull(&ENTRIES, sizeof *ENTRY))
struct xlate_cache {
struct ofpbuf entries;
};
-static struct hmap xbridges = HMAP_INITIALIZER(&xbridges);
-static struct hmap xbundles = HMAP_INITIALIZER(&xbundles);
-static struct hmap xports = HMAP_INITIALIZER(&xports);
+/* Xlate config contains hash maps of all bridges, bundles and ports.
+ * Xcfgp contains the pointer to the current xlate configuration.
+ * When the main thread needs to change the configuration, it copies xcfgp to
+ * new_xcfg and edits new_xcfg. This enables the use of RCU locking which
+ * does not block handler and revalidator threads. */
+struct xlate_cfg {
+ struct hmap xbridges;
+ struct hmap xbundles;
+ struct hmap xports;
+};
+static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL);
+static struct xlate_cfg *new_xcfg = NULL;
static bool may_receive(const struct xport *, struct xlate_ctx *);
static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len,
struct xlate_ctx *);
-static void xlate_actions__(struct xlate_in *, struct xlate_out *)
- OVS_REQ_RDLOCK(xlate_rwlock);
static void xlate_normal(struct xlate_ctx *);
-static void xlate_report(struct xlate_ctx *, const char *);
+static inline void xlate_report(struct xlate_ctx *, const char *, ...)
+ OVS_PRINTF_FORMAT(2, 3);
static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port,
uint8_t table_id, bool may_packet_in,
bool honor_table_miss);
static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid);
static void output_normal(struct xlate_ctx *, const struct xbundle *,
uint16_t vlan);
-static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port);
-static struct xbridge *xbridge_lookup(const struct ofproto_dpif *);
-static struct xbundle *xbundle_lookup(const struct ofbundle *);
-static struct xport *xport_lookup(const struct ofport_dpif *);
+/* Optional bond recirculation parameter to compose_output_action(). */
+struct xlate_bond_recirc {
+ uint32_t recirc_id; /* !0 Use recirculation instead of output. */
+ uint8_t hash_alg; /* !0 Compute hash for recirc before. */
+ uint32_t hash_basis; /* Compute hash for recirc before. */
+};
+
+static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port,
+ const struct xlate_bond_recirc *xr);
+
+static struct xbridge *xbridge_lookup(struct xlate_cfg *,
+ const struct ofproto_dpif *);
+static struct xbridge *xbridge_lookup_by_uuid(struct xlate_cfg *,
+ const struct uuid *);
+static struct xbundle *xbundle_lookup(struct xlate_cfg *,
+ const struct ofbundle *);
+static struct xport *xport_lookup(struct xlate_cfg *,
+ const struct ofport_dpif *);
static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port);
static struct skb_priority_to_dscp *get_skb_priority(const struct xport *,
uint32_t skb_priority);
static void clear_skb_priorities(struct xport *);
+static size_t count_skb_priorities(const struct xport *);
static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority,
uint8_t *dscp);
static struct xc_entry *xlate_cache_add_entry(struct xlate_cache *xc,
enum xc_type type);
+static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *);
+static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *);
+static void xlate_xport_init(struct xlate_cfg *, struct xport *);
+static void xlate_xbridge_set(struct xbridge *, struct dpif *,
+ const struct mac_learning *, struct stp *,
+ struct rstp *, const struct mcast_snooping *,
+ const struct mbridge *,
+ const struct dpif_sflow *,
+ const struct dpif_ipfix *,
+ const struct netflow *,
+ bool forward_bpdu, bool has_in_band,
+ const struct dpif_backer_support *);
+static void xlate_xbundle_set(struct xbundle *xbundle,
+ enum port_vlan_mode vlan_mode, int vlan,
+ unsigned long *trunks, bool use_priority_tags,
+ const struct bond *bond, const struct lacp *lacp,
+ bool floodable);
+static void xlate_xport_set(struct xport *xport, odp_port_t odp_port,
+ const struct netdev *netdev, const struct cfm *cfm,
+ const struct bfd *bfd, const struct lldp *lldp,
+ int stp_port_no, const struct rstp_port *rstp_port,
+ enum ofputil_port_config config,
+ enum ofputil_port_state state, bool is_tunnel,
+ bool may_enable);
+static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *);
+static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *);
+static void xlate_xport_remove(struct xlate_cfg *, struct xport *);
+static void xlate_xbridge_copy(struct xbridge *);
+static void xlate_xbundle_copy(struct xbridge *, struct xbundle *);
+static void xlate_xport_copy(struct xbridge *, struct xbundle *,
+ struct xport *);
+static void xlate_xcfg_free(struct xlate_cfg *);
+
+static inline void
+xlate_report(struct xlate_ctx *ctx, const char *format, ...)
+{
+ if (OVS_UNLIKELY(ctx->xin->report_hook)) {
+ va_list args;
-void
-xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name,
- struct dpif *dpif, struct rule_dpif *miss_rule,
- struct rule_dpif *no_packet_in_rule,
+ va_start(args, format);
+ ctx->xin->report_hook(ctx->xin, ctx->recurse, format, args);
+ va_end(args);
+ }
+}
+
+static struct vlog_rate_limit error_report_rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+#define XLATE_REPORT_ERROR(CTX, ...) \
+ do { \
+ if (OVS_UNLIKELY((CTX)->xin->report_hook)) { \
+ xlate_report(CTX, __VA_ARGS__); \
+ } else { \
+ VLOG_ERR_RL(&error_report_rl, __VA_ARGS__); \
+ } \
+ } while (0)
+
+static inline void
+xlate_report_actions(struct xlate_ctx *ctx, const char *title,
+ const struct ofpact *ofpacts, size_t ofpacts_len)
+{
+ if (OVS_UNLIKELY(ctx->xin->report_hook)) {
+ struct ds s = DS_EMPTY_INITIALIZER;
+ ofpacts_format(ofpacts, ofpacts_len, &s);
+ xlate_report(ctx, "%s: %s", title, ds_cstr(&s));
+ ds_destroy(&s);
+ }
+}
+
+static void
+xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge)
+{
+ list_init(&xbridge->xbundles);
+ hmap_init(&xbridge->xports);
+ hmap_insert(&xcfg->xbridges, &xbridge->hmap_node,
+ hash_pointer(xbridge->ofproto, 0));
+}
+
+static void
+xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle)
+{
+ list_init(&xbundle->xports);
+ list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node);
+ hmap_insert(&xcfg->xbundles, &xbundle->hmap_node,
+ hash_pointer(xbundle->ofbundle, 0));
+}
+
+static void
+xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport)
+{
+ hmap_init(&xport->skb_priorities);
+ hmap_insert(&xcfg->xports, &xport->hmap_node,
+ hash_pointer(xport->ofport, 0));
+ hmap_insert(&xport->xbridge->xports, &xport->ofp_node,
+ hash_ofp_port(xport->ofp_port));
+}
+
+static void
+xlate_xbridge_set(struct xbridge *xbridge,
+ struct dpif *dpif,
const struct mac_learning *ml, struct stp *stp,
+ struct rstp *rstp, const struct mcast_snooping *ms,
const struct mbridge *mbridge,
const struct dpif_sflow *sflow,
const struct dpif_ipfix *ipfix,
- const struct netflow *netflow, enum ofp_config_flags frag,
+ const struct netflow *netflow,
bool forward_bpdu, bool has_in_band,
- bool enable_recirc,
- bool variable_length_userdata,
- size_t max_mpls_depth)
+ const struct dpif_backer_support *support)
{
- struct xbridge *xbridge = xbridge_lookup(ofproto);
-
- if (!xbridge) {
- xbridge = xzalloc(sizeof *xbridge);
- xbridge->ofproto = ofproto;
-
- hmap_insert(&xbridges, &xbridge->hmap_node, hash_pointer(ofproto, 0));
- hmap_init(&xbridge->xports);
- list_init(&xbridge->xbundles);
- }
-
if (xbridge->ml != ml) {
mac_learning_unref(xbridge->ml);
xbridge->ml = mac_learning_ref(ml);
}
+ if (xbridge->ms != ms) {
+ mcast_snooping_unref(xbridge->ms);
+ xbridge->ms = mcast_snooping_ref(ms);
+ }
+
if (xbridge->mbridge != mbridge) {
mbridge_unref(xbridge->mbridge);
xbridge->mbridge = mbridge_ref(mbridge);
xbridge->stp = stp_ref(stp);
}
+ if (xbridge->rstp != rstp) {
+ rstp_unref(xbridge->rstp);
+ xbridge->rstp = rstp_ref(rstp);
+ }
+
if (xbridge->netflow != netflow) {
netflow_unref(xbridge->netflow);
xbridge->netflow = netflow_ref(netflow);
}
- free(xbridge->name);
- xbridge->name = xstrdup(name);
-
xbridge->dpif = dpif;
xbridge->forward_bpdu = forward_bpdu;
xbridge->has_in_band = has_in_band;
- xbridge->frag = frag;
- xbridge->miss_rule = miss_rule;
- xbridge->no_packet_in_rule = no_packet_in_rule;
- xbridge->enable_recirc = enable_recirc;
- xbridge->variable_length_userdata = variable_length_userdata;
- xbridge->max_mpls_depth = max_mpls_depth;
+ xbridge->support = *support;
+}
+
+static void
+xlate_xbundle_set(struct xbundle *xbundle,
+ enum port_vlan_mode vlan_mode, int vlan,
+ unsigned long *trunks, bool use_priority_tags,
+ const struct bond *bond, const struct lacp *lacp,
+ bool floodable)
+{
+ ovs_assert(xbundle->xbridge);
+
+ xbundle->vlan_mode = vlan_mode;
+ xbundle->vlan = vlan;
+ xbundle->trunks = trunks;
+ xbundle->use_priority_tags = use_priority_tags;
+ xbundle->floodable = floodable;
+
+ if (xbundle->bond != bond) {
+ bond_unref(xbundle->bond);
+ xbundle->bond = bond_ref(bond);
+ }
+
+ if (xbundle->lacp != lacp) {
+ lacp_unref(xbundle->lacp);
+ xbundle->lacp = lacp_ref(lacp);
+ }
+}
+
+static void
+xlate_xport_set(struct xport *xport, odp_port_t odp_port,
+ const struct netdev *netdev, const struct cfm *cfm,
+ const struct bfd *bfd, const struct lldp *lldp, int stp_port_no,
+ const struct rstp_port* rstp_port,
+ enum ofputil_port_config config, enum ofputil_port_state state,
+ bool is_tunnel, bool may_enable)
+{
+ xport->config = config;
+ xport->state = state;
+ xport->stp_port_no = stp_port_no;
+ xport->is_tunnel = is_tunnel;
+ xport->may_enable = may_enable;
+ xport->odp_port = odp_port;
+
+ if (xport->rstp_port != rstp_port) {
+ rstp_port_unref(xport->rstp_port);
+ xport->rstp_port = rstp_port_ref(rstp_port);
+ }
+
+ if (xport->cfm != cfm) {
+ cfm_unref(xport->cfm);
+ xport->cfm = cfm_ref(cfm);
+ }
+
+ if (xport->bfd != bfd) {
+ bfd_unref(xport->bfd);
+ xport->bfd = bfd_ref(bfd);
+ }
+
+ if (xport->lldp != lldp) {
+ lldp_unref(xport->lldp);
+ xport->lldp = lldp_ref(lldp);
+ }
+
+ if (xport->netdev != netdev) {
+ netdev_close(xport->netdev);
+ xport->netdev = netdev_ref(netdev);
+ }
+}
+
+static void
+xlate_xbridge_copy(struct xbridge *xbridge)
+{
+ struct xbundle *xbundle;
+ struct xport *xport;
+ struct xbridge *new_xbridge = xzalloc(sizeof *xbridge);
+ new_xbridge->ofproto = xbridge->ofproto;
+ new_xbridge->name = xstrdup(xbridge->name);
+ xlate_xbridge_init(new_xcfg, new_xbridge);
+
+ xlate_xbridge_set(new_xbridge,
+ xbridge->dpif, xbridge->ml, xbridge->stp,
+ xbridge->rstp, xbridge->ms, xbridge->mbridge,
+ xbridge->sflow, xbridge->ipfix, xbridge->netflow,
+ xbridge->forward_bpdu, xbridge->has_in_band,
+ &xbridge->support);
+ LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) {
+ xlate_xbundle_copy(new_xbridge, xbundle);
+ }
+
+ /* Copy xports which are not part of a xbundle */
+ HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) {
+ if (!xport->xbundle) {
+ xlate_xport_copy(new_xbridge, NULL, xport);
+ }
+ }
+}
+
+static void
+xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle)
+{
+ struct xport *xport;
+ struct xbundle *new_xbundle = xzalloc(sizeof *xbundle);
+ new_xbundle->ofbundle = xbundle->ofbundle;
+ new_xbundle->xbridge = xbridge;
+ new_xbundle->name = xstrdup(xbundle->name);
+ xlate_xbundle_init(new_xcfg, new_xbundle);
+
+ xlate_xbundle_set(new_xbundle, xbundle->vlan_mode,
+ xbundle->vlan, xbundle->trunks,
+ xbundle->use_priority_tags, xbundle->bond, xbundle->lacp,
+ xbundle->floodable);
+ LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) {
+ xlate_xport_copy(xbridge, new_xbundle, xport);
+ }
+}
+
+static void
+xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle,
+ struct xport *xport)
+{
+ struct skb_priority_to_dscp *pdscp, *new_pdscp;
+ struct xport *new_xport = xzalloc(sizeof *xport);
+ new_xport->ofport = xport->ofport;
+ new_xport->ofp_port = xport->ofp_port;
+ new_xport->xbridge = xbridge;
+ xlate_xport_init(new_xcfg, new_xport);
+
+ xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm,
+ xport->bfd, xport->lldp, xport->stp_port_no,
+ xport->rstp_port, xport->config, xport->state,
+ xport->is_tunnel, xport->may_enable);
+
+ if (xport->peer) {
+ struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport);
+ if (peer) {
+ new_xport->peer = peer;
+ new_xport->peer->peer = new_xport;
+ }
+ }
+
+ if (xbundle) {
+ new_xport->xbundle = xbundle;
+ list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node);
+ }
+
+ HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) {
+ new_pdscp = xmalloc(sizeof *pdscp);
+ new_pdscp->skb_priority = pdscp->skb_priority;
+ new_pdscp->dscp = pdscp->dscp;
+ hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node,
+ hash_int(new_pdscp->skb_priority, 0));
+ }
}
+/* Sets the current xlate configuration to new_xcfg and frees the old xlate
+ * configuration in xcfgp.
+ *
+ * This needs to be called after editing the xlate configuration.
+ *
+ * Functions that edit the new xlate configuration are
+ * xlate_<ofport/bundle/ofport>_set and xlate_<ofport/bundle/ofport>_remove.
+ *
+ * A sample workflow:
+ *
+ * xlate_txn_start();
+ * ...
+ * edit_xlate_configuration();
+ * ...
+ * xlate_txn_commit(); */
void
-xlate_remove_ofproto(struct ofproto_dpif *ofproto)
+xlate_txn_commit(void)
+{
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+
+ ovsrcu_set(&xcfgp, new_xcfg);
+ ovsrcu_synchronize();
+ xlate_xcfg_free(xcfg);
+ new_xcfg = NULL;
+}
+
+/* Copies the current xlate configuration in xcfgp to new_xcfg.
+ *
+ * This needs to be called prior to editing the xlate configuration. */
+void
+xlate_txn_start(void)
+{
+ struct xbridge *xbridge;
+ struct xlate_cfg *xcfg;
+
+ ovs_assert(!new_xcfg);
+
+ new_xcfg = xmalloc(sizeof *new_xcfg);
+ hmap_init(&new_xcfg->xbridges);
+ hmap_init(&new_xcfg->xbundles);
+ hmap_init(&new_xcfg->xports);
+
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ if (!xcfg) {
+ return;
+ }
+
+ HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) {
+ xlate_xbridge_copy(xbridge);
+ }
+}
+
+
+static void
+xlate_xcfg_free(struct xlate_cfg *xcfg)
+{
+ struct xbridge *xbridge, *next_xbridge;
+
+ if (!xcfg) {
+ return;
+ }
+
+ HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) {
+ xlate_xbridge_remove(xcfg, xbridge);
+ }
+
+ hmap_destroy(&xcfg->xbridges);
+ hmap_destroy(&xcfg->xbundles);
+ hmap_destroy(&xcfg->xports);
+ free(xcfg);
+}
+
+void
+xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name,
+ struct dpif *dpif,
+ const struct mac_learning *ml, struct stp *stp,
+ struct rstp *rstp, const struct mcast_snooping *ms,
+ const struct mbridge *mbridge,
+ const struct dpif_sflow *sflow,
+ const struct dpif_ipfix *ipfix,
+ const struct netflow *netflow,
+ bool forward_bpdu, bool has_in_band,
+ const struct dpif_backer_support *support)
+{
+ struct xbridge *xbridge;
+
+ ovs_assert(new_xcfg);
+
+ xbridge = xbridge_lookup(new_xcfg, ofproto);
+ if (!xbridge) {
+ xbridge = xzalloc(sizeof *xbridge);
+ xbridge->ofproto = ofproto;
+
+ xlate_xbridge_init(new_xcfg, xbridge);
+ }
+
+ free(xbridge->name);
+ xbridge->name = xstrdup(name);
+
+ xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix,
+ netflow, forward_bpdu, has_in_band, support);
+}
+
+static void
+xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge)
{
- struct xbridge *xbridge = xbridge_lookup(ofproto);
struct xbundle *xbundle, *next_xbundle;
struct xport *xport, *next_xport;
}
HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) {
- xlate_ofport_remove(xport->ofport);
+ xlate_xport_remove(xcfg, xport);
}
LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) {
- xlate_bundle_remove(xbundle->ofbundle);
+ xlate_xbundle_remove(xcfg, xbundle);
}
- hmap_remove(&xbridges, &xbridge->hmap_node);
+ hmap_remove(&xcfg->xbridges, &xbridge->hmap_node);
mac_learning_unref(xbridge->ml);
+ mcast_snooping_unref(xbridge->ms);
mbridge_unref(xbridge->mbridge);
dpif_sflow_unref(xbridge->sflow);
dpif_ipfix_unref(xbridge->ipfix);
stp_unref(xbridge->stp);
+ rstp_unref(xbridge->rstp);
hmap_destroy(&xbridge->xports);
free(xbridge->name);
free(xbridge);
}
+void
+xlate_remove_ofproto(struct ofproto_dpif *ofproto)
+{
+ struct xbridge *xbridge;
+
+ ovs_assert(new_xcfg);
+
+ xbridge = xbridge_lookup(new_xcfg, ofproto);
+ xlate_xbridge_remove(new_xcfg, xbridge);
+}
+
void
xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle,
const char *name, enum port_vlan_mode vlan_mode, int vlan,
const struct bond *bond, const struct lacp *lacp,
bool floodable)
{
- struct xbundle *xbundle = xbundle_lookup(ofbundle);
+ struct xbundle *xbundle;
+ ovs_assert(new_xcfg);
+
+ xbundle = xbundle_lookup(new_xcfg, ofbundle);
if (!xbundle) {
xbundle = xzalloc(sizeof *xbundle);
xbundle->ofbundle = ofbundle;
- xbundle->xbridge = xbridge_lookup(ofproto);
+ xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto);
- hmap_insert(&xbundles, &xbundle->hmap_node, hash_pointer(ofbundle, 0));
- list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node);
- list_init(&xbundle->xports);
+ xlate_xbundle_init(new_xcfg, xbundle);
}
- ovs_assert(xbundle->xbridge);
-
free(xbundle->name);
xbundle->name = xstrdup(name);
- xbundle->vlan_mode = vlan_mode;
- xbundle->vlan = vlan;
- xbundle->trunks = trunks;
- xbundle->use_priority_tags = use_priority_tags;
- xbundle->floodable = floodable;
-
- if (xbundle->bond != bond) {
- bond_unref(xbundle->bond);
- xbundle->bond = bond_ref(bond);
- }
-
- if (xbundle->lacp != lacp) {
- lacp_unref(xbundle->lacp);
- xbundle->lacp = lacp_ref(lacp);
- }
+ xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks,
+ use_priority_tags, bond, lacp, floodable);
}
-void
-xlate_bundle_remove(struct ofbundle *ofbundle)
+static void
+xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle)
{
- struct xbundle *xbundle = xbundle_lookup(ofbundle);
- struct xport *xport, *next;
+ struct xport *xport;
if (!xbundle) {
return;
}
- LIST_FOR_EACH_SAFE (xport, next, bundle_node, &xbundle->xports) {
- list_remove(&xport->bundle_node);
+ LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) {
xport->xbundle = NULL;
}
- hmap_remove(&xbundles, &xbundle->hmap_node);
+ hmap_remove(&xcfg->xbundles, &xbundle->hmap_node);
list_remove(&xbundle->list_node);
bond_unref(xbundle->bond);
lacp_unref(xbundle->lacp);
free(xbundle);
}
+void
+xlate_bundle_remove(struct ofbundle *ofbundle)
+{
+ struct xbundle *xbundle;
+
+ ovs_assert(new_xcfg);
+
+ xbundle = xbundle_lookup(new_xcfg, ofbundle);
+ xlate_xbundle_remove(new_xcfg, xbundle);
+}
+
void
xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle,
struct ofport_dpif *ofport, ofp_port_t ofp_port,
odp_port_t odp_port, const struct netdev *netdev,
const struct cfm *cfm, const struct bfd *bfd,
- struct ofport_dpif *peer, int stp_port_no,
+ const struct lldp *lldp, struct ofport_dpif *peer,
+ int stp_port_no, const struct rstp_port *rstp_port,
const struct ofproto_port_queue *qdscp_list, size_t n_qdscp,
enum ofputil_port_config config,
enum ofputil_port_state state, bool is_tunnel,
bool may_enable)
{
- struct xport *xport = xport_lookup(ofport);
size_t i;
+ struct xport *xport;
+
+ ovs_assert(new_xcfg);
+ xport = xport_lookup(new_xcfg, ofport);
if (!xport) {
xport = xzalloc(sizeof *xport);
xport->ofport = ofport;
- xport->xbridge = xbridge_lookup(ofproto);
+ xport->xbridge = xbridge_lookup(new_xcfg, ofproto);
xport->ofp_port = ofp_port;
- hmap_init(&xport->skb_priorities);
- hmap_insert(&xports, &xport->hmap_node, hash_pointer(ofport, 0));
- hmap_insert(&xport->xbridge->xports, &xport->ofp_node,
- hash_ofp_port(xport->ofp_port));
+ xlate_xport_init(new_xcfg, xport);
}
ovs_assert(xport->ofp_port == ofp_port);
- xport->config = config;
- xport->state = state;
- xport->stp_port_no = stp_port_no;
- xport->is_tunnel = is_tunnel;
- xport->may_enable = may_enable;
- xport->odp_port = odp_port;
-
- if (xport->netdev != netdev) {
- netdev_close(xport->netdev);
- xport->netdev = netdev_ref(netdev);
- }
-
- if (xport->cfm != cfm) {
- cfm_unref(xport->cfm);
- xport->cfm = cfm_ref(cfm);
- }
-
- if (xport->bfd != bfd) {
- bfd_unref(xport->bfd);
- xport->bfd = bfd_ref(bfd);
- }
+ xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp,
+ stp_port_no, rstp_port, config, state, is_tunnel,
+ may_enable);
if (xport->peer) {
xport->peer->peer = NULL;
}
- xport->peer = xport_lookup(peer);
+ xport->peer = xport_lookup(new_xcfg, peer);
if (xport->peer) {
xport->peer->peer = xport;
}
if (xport->xbundle) {
list_remove(&xport->bundle_node);
}
- xport->xbundle = xbundle_lookup(ofbundle);
+ xport->xbundle = xbundle_lookup(new_xcfg, ofbundle);
if (xport->xbundle) {
list_insert(&xport->xbundle->xports, &xport->bundle_node);
}
}
}
-void
-xlate_ofport_remove(struct ofport_dpif *ofport)
+static void
+xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport)
{
- struct xport *xport = xport_lookup(ofport);
-
if (!xport) {
return;
}
list_remove(&xport->bundle_node);
}
- clear_skb_priorities(xport);
- hmap_destroy(&xport->skb_priorities);
-
- hmap_remove(&xports, &xport->hmap_node);
- hmap_remove(&xport->xbridge->xports, &xport->ofp_node);
+ clear_skb_priorities(xport);
+ hmap_destroy(&xport->skb_priorities);
+
+ hmap_remove(&xcfg->xports, &xport->hmap_node);
+ hmap_remove(&xport->xbridge->xports, &xport->ofp_node);
+
+ netdev_close(xport->netdev);
+ rstp_port_unref(xport->rstp_port);
+ cfm_unref(xport->cfm);
+ bfd_unref(xport->bfd);
+ lldp_unref(xport->lldp);
+ free(xport);
+}
+
+void
+xlate_ofport_remove(struct ofport_dpif *ofport)
+{
+ struct xport *xport;
+
+ ovs_assert(new_xcfg);
+
+ xport = xport_lookup(new_xcfg, ofport);
+ xlate_xport_remove(new_xcfg, xport);
+}
+
+static struct ofproto_dpif *
+xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow,
+ ofp_port_t *ofp_in_port, const struct xport **xportp)
+{
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ const struct xport *xport;
+
+ xport = xport_lookup(xcfg, tnl_port_should_receive(flow)
+ ? tnl_port_receive(flow)
+ : odp_port_to_ofport(backer, flow->in_port.odp_port));
+ if (OVS_UNLIKELY(!xport)) {
+ return NULL;
+ }
+ *xportp = xport;
+ if (ofp_in_port) {
+ *ofp_in_port = xport->ofp_port;
+ }
+ return xport->xbridge->ofproto;
+}
+
+/* Given a datapath and flow metadata ('backer', and 'flow' respectively)
+ * returns the corresponding struct ofproto_dpif and OpenFlow port number. */
+struct ofproto_dpif *
+xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow,
+ ofp_port_t *ofp_in_port)
+{
+ const struct xport *xport;
- netdev_close(xport->netdev);
- cfm_unref(xport->cfm);
- bfd_unref(xport->bfd);
- free(xport);
+ return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport);
}
-/* Given a datpath, packet, and flow metadata ('backer', 'packet', and 'key'
- * respectively), populates 'flow' with the result of odp_flow_key_to_flow().
- * Optionally populates 'ofproto' with the ofproto_dpif, 'odp_in_port' with
- * the datapath in_port, that 'packet' ingressed, and 'ipfix', 'sflow', and
- * 'netflow' with the appropriate handles for those protocols if they're
- * enabled. Caller is responsible for unrefing them.
- *
- * If 'ofproto' is nonnull, requires 'flow''s in_port to exist. Otherwise sets
- * 'flow''s in_port to OFPP_NONE.
+/* Given a datapath and flow metadata ('backer', and 'flow' respectively),
+ * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the
+ * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate
+ * handles for those protocols if they're enabled. Caller may use the returned
+ * pointers until quiescing, for longer term use additional references must
+ * be taken.
*
- * This function does post-processing on data returned from
- * odp_flow_key_to_flow() to help make VLAN splinters transparent to the rest
- * of the upcall processing logic. In particular, if the extracted in_port is
- * a VLAN splinter port, it replaces flow->in_port by the "real" port, sets
- * flow->vlan_tci correctly for the VLAN of the VLAN splinter port, and pushes
- * a VLAN header onto 'packet' (if it is nonnull).
- *
- * Similarly, this function also includes some logic to help with tunnels. It
- * may modify 'flow' as necessary to make the tunneling implementation
- * transparent to the upcall processing logic.
- *
- * Returns 0 if successful, ENODEV if the parsed flow has no associated ofport,
- * or some other positive errno if there are other problems. */
+ * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto.
+ */
int
-xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet,
- const struct nlattr *key, size_t key_len, struct flow *flow,
- struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix,
- struct dpif_sflow **sflow, struct netflow **netflow,
- odp_port_t *odp_in_port)
+xlate_lookup(const struct dpif_backer *backer, const struct flow *flow,
+ struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix,
+ struct dpif_sflow **sflow, struct netflow **netflow,
+ ofp_port_t *ofp_in_port)
{
+ struct ofproto_dpif *ofproto;
const struct xport *xport;
- int error = ENODEV;
-
- ovs_rwlock_rdlock(&xlate_rwlock);
- if (odp_flow_key_to_flow(key, key_len, flow) == ODP_FIT_ERROR) {
- error = EINVAL;
- goto exit;
- }
-
- if (odp_in_port) {
- *odp_in_port = flow->in_port.odp_port;
- }
- xport = xport_lookup(tnl_port_should_receive(flow)
- ? tnl_port_receive(flow)
- : odp_port_to_ofport(backer, flow->in_port.odp_port));
-
- flow->in_port.ofp_port = xport ? xport->ofp_port : OFPP_NONE;
- if (!xport) {
- goto exit;
- }
+ ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport);
- if (vsp_adjust_flow(xport->xbridge->ofproto, flow)) {
- if (packet) {
- /* Make the packet resemble the flow, so that it gets sent to
- * an OpenFlow controller properly, so that it looks correct
- * for sFlow, and so that flow_extract() will get the correct
- * vlan_tci if it is called on 'packet'. */
- eth_push_vlan(packet, htons(ETH_TYPE_VLAN), flow->vlan_tci);
- }
+ if (!ofproto) {
+ return ENODEV;
}
- error = 0;
- if (ofproto) {
- *ofproto = xport->xbridge->ofproto;
+ if (ofprotop) {
+ *ofprotop = ofproto;
}
if (ipfix) {
- *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix);
+ *ipfix = xport ? xport->xbridge->ipfix : NULL;
}
if (sflow) {
- *sflow = dpif_sflow_ref(xport->xbridge->sflow);
+ *sflow = xport ? xport->xbridge->sflow : NULL;
}
if (netflow) {
- *netflow = netflow_ref(xport->xbridge->netflow);
+ *netflow = xport ? xport->xbridge->netflow : NULL;
}
-exit:
- ovs_rwlock_unlock(&xlate_rwlock);
- return error;
+ return 0;
}
static struct xbridge *
-xbridge_lookup(const struct ofproto_dpif *ofproto)
+xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto)
{
+ struct hmap *xbridges;
struct xbridge *xbridge;
- if (!ofproto) {
+ if (!ofproto || !xcfg) {
return NULL;
}
+ xbridges = &xcfg->xbridges;
+
HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0),
- &xbridges) {
+ xbridges) {
if (xbridge->ofproto == ofproto) {
return xbridge;
}
return NULL;
}
+static struct xbridge *
+xbridge_lookup_by_uuid(struct xlate_cfg *xcfg, const struct uuid *uuid)
+{
+ struct xbridge *xbridge;
+
+ HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) {
+ if (uuid_equals(ofproto_dpif_get_uuid(xbridge->ofproto), uuid)) {
+ return xbridge;
+ }
+ }
+ return NULL;
+}
+
static struct xbundle *
-xbundle_lookup(const struct ofbundle *ofbundle)
+xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle)
{
+ struct hmap *xbundles;
struct xbundle *xbundle;
- if (!ofbundle) {
+ if (!ofbundle || !xcfg) {
return NULL;
}
+ xbundles = &xcfg->xbundles;
+
HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0),
- &xbundles) {
+ xbundles) {
if (xbundle->ofbundle == ofbundle) {
return xbundle;
}
}
static struct xport *
-xport_lookup(const struct ofport_dpif *ofport)
+xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport)
{
+ struct hmap *xports;
struct xport *xport;
- if (!ofport) {
+ if (!ofport || !xcfg) {
return NULL;
}
+ xports = &xcfg->xports;
+
HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0),
- &xports) {
+ xports) {
if (xport->ofport == ofport) {
return xport;
}
xport_stp_learn_state(const struct xport *xport)
{
struct stp_port *sp = xport_get_stp_port(xport);
- return stp_learn_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED);
+ return sp
+ ? stp_learn_in_state(stp_port_get_state(sp))
+ : true;
}
static bool
xport_stp_forward_state(const struct xport *xport)
{
struct stp_port *sp = xport_get_stp_port(xport);
- return stp_forward_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED);
+ return sp
+ ? stp_forward_in_state(stp_port_get_state(sp))
+ : true;
}
static bool
-xport_stp_listen_state(const struct xport *xport)
+xport_stp_should_forward_bpdu(const struct xport *xport)
{
struct stp_port *sp = xport_get_stp_port(xport);
- return stp_listen_in_state(sp ? stp_port_get_state(sp) : STP_DISABLED);
+ return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED);
}
/* Returns true if STP should process 'flow'. Sets fields in 'wc' that
}
static void
-stp_process_packet(const struct xport *xport, const struct ofpbuf *packet)
+stp_process_packet(const struct xport *xport, const struct dp_packet *packet)
{
struct stp_port *sp = xport_get_stp_port(xport);
- struct ofpbuf payload = *packet;
- struct eth_header *eth = ofpbuf_data(&payload);
+ struct dp_packet payload = *packet;
+ struct eth_header *eth = dp_packet_data(&payload);
/* Sink packets on ports that have STP disabled when the bridge has
* STP enabled. */
}
/* Trim off padding on payload. */
- if (ofpbuf_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
- ofpbuf_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN);
+ if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
+ dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN);
+ }
+
+ if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
+ stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload));
+ }
+}
+
+static enum rstp_state
+xport_get_rstp_port_state(const struct xport *xport)
+{
+ return xport->rstp_port
+ ? rstp_port_get_state(xport->rstp_port)
+ : RSTP_DISABLED;
+}
+
+static bool
+xport_rstp_learn_state(const struct xport *xport)
+{
+ return xport->xbridge->rstp && xport->rstp_port
+ ? rstp_learn_in_state(xport_get_rstp_port_state(xport))
+ : true;
+}
+
+static bool
+xport_rstp_forward_state(const struct xport *xport)
+{
+ return xport->xbridge->rstp && xport->rstp_port
+ ? rstp_forward_in_state(xport_get_rstp_port_state(xport))
+ : true;
+}
+
+static bool
+xport_rstp_should_manage_bpdu(const struct xport *xport)
+{
+ return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport));
+}
+
+static void
+rstp_process_packet(const struct xport *xport, const struct dp_packet *packet)
+{
+ struct dp_packet payload = *packet;
+ struct eth_header *eth = dp_packet_data(&payload);
+
+ /* Sink packets on ports that have no RSTP. */
+ if (!xport->rstp_port) {
+ return;
+ }
+
+ /* Trim off padding on payload. */
+ if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
+ dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN);
}
- if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
- stp_received_bpdu(sp, ofpbuf_data(&payload), ofpbuf_size(&payload));
+ if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
+ rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload),
+ dp_packet_size(&payload));
}
}
static bool
odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port)
{
- struct xport *xport;
-
- xport = get_ofp_port(ctx->xbridge, ofp_port);
- if (!xport || xport->config & OFPUTIL_PC_PORT_DOWN ||
- xport->state & OFPUTIL_PS_LINK_DOWN) {
- return false;
- }
-
- return true;
+ struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port);
+ return xport && xport->may_enable;
}
-static const struct ofputil_bucket *
+static struct ofputil_bucket *
group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *,
int depth);
group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth)
{
struct group_dpif *group;
- bool hit;
- hit = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group);
- if (!hit) {
- return false;
- }
+ if (group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group)) {
+ struct ofputil_bucket *bucket;
- hit = group_first_live_bucket(ctx, group, depth) != NULL;
+ bucket = group_first_live_bucket(ctx, group, depth);
+ group_dpif_unref(group);
+ return bucket == NULL;
+ }
- group_dpif_release(group);
- return hit;
+ return false;
}
#define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */
static bool
bucket_is_alive(const struct xlate_ctx *ctx,
- const struct ofputil_bucket *bucket, int depth)
+ struct ofputil_bucket *bucket, int depth)
{
if (depth >= MAX_LIVENESS_RECURSION) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
return false;
}
- return !ofputil_bucket_has_liveness(bucket) ||
- (bucket->watch_port != OFPP_ANY &&
- odp_port_is_alive(ctx, bucket->watch_port)) ||
- (bucket->watch_group != OFPG_ANY &&
- group_is_alive(ctx, bucket->watch_group, depth + 1));
+ return (!ofputil_bucket_has_liveness(bucket)
+ || (bucket->watch_port != OFPP_ANY
+ && odp_port_is_alive(ctx, bucket->watch_port))
+ || (bucket->watch_group != OFPG_ANY
+ && group_is_alive(ctx, bucket->watch_group, depth + 1)));
}
-static const struct ofputil_bucket *
+static struct ofputil_bucket *
group_first_live_bucket(const struct xlate_ctx *ctx,
const struct group_dpif *group, int depth)
{
struct ofputil_bucket *bucket;
- const struct list *buckets;
+ const struct ovs_list *buckets;
group_dpif_get_buckets(group, &buckets);
LIST_FOR_EACH (bucket, list_node, buckets) {
return NULL;
}
-static const struct ofputil_bucket *
+static struct ofputil_bucket *
group_best_live_bucket(const struct xlate_ctx *ctx,
const struct group_dpif *group,
uint32_t basis)
{
- const struct ofputil_bucket *best_bucket = NULL;
+ struct ofputil_bucket *best_bucket = NULL;
uint32_t best_score = 0;
int i = 0;
- const struct ofputil_bucket *bucket;
- const struct list *buckets;
+ struct ofputil_bucket *bucket;
+ const struct ovs_list *buckets;
group_dpif_get_buckets(group, &buckets);
LIST_FOR_EACH (bucket, list_node, buckets) {
return xport->xbundle;
}
- /* Special-case OFPP_NONE, which a controller may use as the ingress
- * port for traffic that it is sourcing. */
- if (in_port == OFPP_NONE) {
+ /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+),
+ * which a controller may use as the ingress port for traffic that
+ * it is sourcing. */
+ if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) {
return &ofpp_none_bundle;
}
return NULL;
}
+/* Mirrors the packet represented by 'ctx' to appropriate mirror destinations,
+ * given the packet is ingressing or egressing on 'xbundle', which has ingress
+ * or egress (as appropriate) mirrors 'mirrors'. */
static void
-add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow)
+mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle,
+ mirror_mask_t mirrors)
{
- const struct xbridge *xbridge = ctx->xbridge;
- mirror_mask_t mirrors;
- struct xbundle *in_xbundle;
- uint16_t vlan;
- uint16_t vid;
-
- mirrors = ctx->xout->mirrors;
- ctx->xout->mirrors = 0;
-
- in_xbundle = lookup_input_bundle(xbridge, orig_flow->in_port.ofp_port,
- ctx->xin->packet != NULL, NULL);
- if (!in_xbundle) {
+ /* Figure out what VLAN the packet is in (because mirrors can select
+ * packets on basis of VLAN). */
+ bool warn = ctx->xin->packet != NULL;
+ uint16_t vid = vlan_tci_to_vid(ctx->xin->flow.vlan_tci);
+ if (!input_vid_is_valid(vid, xbundle, warn)) {
return;
}
- mirrors |= xbundle_mirror_src(xbridge, in_xbundle);
+ uint16_t vlan = input_vid_to_vlan(xbundle, vid);
- /* Drop frames on bundles reserved for mirroring. */
- if (xbundle_mirror_out(xbridge, in_xbundle)) {
- if (ctx->xin->packet != NULL) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
- "%s, which is reserved exclusively for mirroring",
- ctx->xbridge->name, in_xbundle->name);
- }
- ofpbuf_clear(&ctx->xout->odp_actions);
- return;
- }
+ const struct xbridge *xbridge = ctx->xbridge;
- /* Check VLAN. */
- vid = vlan_tci_to_vid(orig_flow->vlan_tci);
- if (!input_vid_is_valid(vid, in_xbundle, ctx->xin->packet != NULL)) {
+ /* Don't mirror to destinations that we've already mirrored to. */
+ mirrors &= ~ctx->mirrors;
+ if (!mirrors) {
return;
}
- vlan = input_vid_to_vlan(in_xbundle, vid);
- if (!mirrors) {
- return;
+ if (ctx->xin->resubmit_stats) {
+ mirror_update_stats(xbridge->mbridge, mirrors,
+ ctx->xin->resubmit_stats->n_packets,
+ ctx->xin->resubmit_stats->n_bytes);
}
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
- /* Restore the original packet before adding the mirror actions. */
- ctx->xin->flow = *orig_flow;
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR);
+ entry->u.mirror.mbridge = mbridge_ref(xbridge->mbridge);
+ entry->u.mirror.mirrors = mirrors;
+ }
+ /* 'mirrors' is a bit-mask of candidates for mirroring. Iterate as long as
+ * some candidates remain. */
while (mirrors) {
+ const unsigned long *vlans;
mirror_mask_t dup_mirrors;
struct ofbundle *out;
- unsigned long *vlans;
- bool vlan_mirrored;
- bool has_mirror;
int out_vlan;
- has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors),
- &vlans, &dup_mirrors, &out, &out_vlan);
+ /* Get the details of the mirror represented by the rightmost 1-bit. */
+ bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors),
+ &vlans, &dup_mirrors, &out, &out_vlan);
ovs_assert(has_mirror);
+ /* If this mirror selects on the basis of VLAN, and it does not select
+ * 'vlan', then discard this mirror and go on to the next one. */
if (vlans) {
- ctx->xout->wc.masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK);
+ ctx->wc->masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK);
}
- vlan_mirrored = !vlans || bitmap_is_set(vlans, vlan);
- free(vlans);
-
- if (!vlan_mirrored) {
+ if (vlans && !bitmap_is_set(vlans, vlan)) {
mirrors = zero_rightmost_1bit(mirrors);
continue;
}
- mirrors &= ~dup_mirrors;
- ctx->xout->mirrors |= dup_mirrors;
+ /* Record the mirror, and the mirrors that output to the same
+ * destination, so that we don't mirror to them again. This must be
+ * done now to ensure that output_normal(), below, doesn't recursively
+ * output to the same mirrors. */
+ ctx->mirrors |= dup_mirrors;
+
+ /* Send the packet to the mirror. */
if (out) {
- struct xbundle *out_xbundle = xbundle_lookup(out);
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ struct xbundle *out_xbundle = xbundle_lookup(xcfg, out);
if (out_xbundle) {
output_normal(ctx, out_xbundle, vlan);
}
} else if (vlan != out_vlan
- && !eth_addr_is_reserved(orig_flow->dl_dst)) {
+ && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) {
struct xbundle *xbundle;
LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) {
}
}
}
+
+ /* output_normal() could have recursively output (to different
+ * mirrors), so make sure that we don't send duplicates. */
+ mirrors &= ~ctx->mirrors;
+ }
+}
+
+static void
+mirror_ingress_packet(struct xlate_ctx *ctx)
+{
+ if (mbridge_has_mirrors(ctx->xbridge->mbridge)) {
+ bool warn = ctx->xin->packet != NULL;
+ struct xbundle *xbundle = lookup_input_bundle(
+ ctx->xbridge, ctx->xin->flow.in_port.ofp_port, warn, NULL);
+ if (xbundle) {
+ mirror_packet(ctx, xbundle,
+ xbundle_mirror_src(ctx->xbridge, xbundle));
+ }
}
}
uint16_t vid;
ovs_be16 tci, old_tci;
struct xport *xport;
+ struct xlate_bond_recirc xr;
+ bool use_recirc = false;
vid = output_vlan_to_vid(out_xbundle, vlan);
if (list_is_empty(&out_xbundle->xports)) {
/* Partially configured bundle with no slaves. Drop the packet. */
return;
} else if (!out_xbundle->bond) {
- ctx->xout->use_recirc = false;
xport = CONTAINER_OF(list_front(&out_xbundle->xports), struct xport,
bundle_node);
} else {
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ struct flow_wildcards *wc = ctx->wc;
struct ofport_dpif *ofport;
- struct xlate_recirc *xr = &ctx->xout->recirc;
- struct flow_wildcards *wc = &ctx->xout->wc;
- if (ctx->xbridge->enable_recirc) {
- ctx->xout->use_recirc = bond_may_recirc(
- out_xbundle->bond, &xr->recirc_id, &xr->hash_basis);
+ if (ctx->xbridge->support.odp.recirc) {
+ use_recirc = bond_may_recirc(
+ out_xbundle->bond, &xr.recirc_id, &xr.hash_basis);
- if (ctx->xout->use_recirc) {
+ if (use_recirc) {
/* Only TCP mode uses recirculation. */
- xr->hash_alg = OVS_HASH_ALG_L4;
+ xr.hash_alg = OVS_HASH_ALG_L4;
bond_update_post_recirc_rules(out_xbundle->bond, false);
/* Recirculation does not require unmasking hash fields. */
ofport = bond_choose_output_slave(out_xbundle->bond,
&ctx->xin->flow, wc, vid);
- xport = xport_lookup(ofport);
+ xport = xport_lookup(xcfg, ofport);
if (!xport) {
/* No slaves enabled, so drop packet. */
return;
}
- /* If ctx->xout->use_recirc is set, the main thread will handle stats
+ /* If use_recirc is set, the main thread will handle stats
* accounting for this bond. */
- if (!ctx->xout->use_recirc) {
+ if (!use_recirc) {
if (ctx->xin->resubmit_stats) {
bond_account(out_xbundle->bond, &ctx->xin->flow, vid,
ctx->xin->resubmit_stats->n_bytes);
}
*flow_tci = tci;
- compose_output_action(ctx, xport->ofp_port);
+ compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL);
*flow_tci = old_tci;
}
}
}
+/* Determines whether packets in 'flow' within 'xbridge' should be forwarded or
+ * dropped. Returns true if they may be forwarded, false if they should be
+ * dropped.
+ *
+ * 'in_port' must be the xport that corresponds to flow->in_port.
+ * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
+ *
+ * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
+ * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
+ * checked by input_vid_is_valid().
+ *
+ * May also add tags to '*tags', although the current implementation only does
+ * so in one special case.
+ */
+static bool
+is_admissible(struct xlate_ctx *ctx, struct xport *in_port,
+ uint16_t vlan)
+{
+ struct xbundle *in_xbundle = in_port->xbundle;
+ const struct xbridge *xbridge = ctx->xbridge;
+ struct flow *flow = &ctx->xin->flow;
+
+ /* Drop frames for reserved multicast addresses
+ * only if forward_bpdu option is absent. */
+ if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) {
+ xlate_report(ctx, "packet has reserved destination MAC, dropping");
+ return false;
+ }
+
+ if (in_xbundle->bond) {
+ struct mac_entry *mac;
+
+ switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport,
+ flow->dl_dst)) {
+ case BV_ACCEPT:
+ break;
+
+ case BV_DROP:
+ xlate_report(ctx, "bonding refused admissibility, dropping");
+ return false;
+
+ case BV_DROP_IF_MOVED:
+ ovs_rwlock_rdlock(&xbridge->ml->rwlock);
+ mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan);
+ if (mac
+ && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle
+ && (!is_gratuitous_arp(flow, ctx->wc)
+ || mac_entry_is_grat_arp_locked(mac))) {
+ ovs_rwlock_unlock(&xbridge->ml->rwlock);
+ xlate_report(ctx, "SLB bond thinks this packet looped back, "
+ "dropping");
+ return false;
+ }
+ ovs_rwlock_unlock(&xbridge->ml->rwlock);
+ break;
+ }
+ }
+
+ return true;
+}
+
/* Checks whether a MAC learning update is necessary for MAC learning table
* 'ml' given that a packet matching 'flow' was received on 'in_xbundle' in
* 'vlan'.
}
}
- return mac->port.p != in_xbundle->ofbundle;
+ return mac_entry_get_port(ml, mac) != in_xbundle->ofbundle;
}
}
}
- if (mac->port.p != in_xbundle->ofbundle) {
+ if (mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle) {
/* The log messages here could actually be useful in debugging,
* so keep the rate limit relatively high. */
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
xbridge->name, ETH_ADDR_ARGS(flow->dl_src),
in_xbundle->name, vlan);
- mac->port.p = in_xbundle->ofbundle;
- mac_learning_changed(xbridge->ml);
+ mac_entry_set_port(xbridge->ml, mac, in_xbundle->ofbundle);
}
}
}
}
-/* Determines whether packets in 'flow' within 'xbridge' should be forwarded or
- * dropped. Returns true if they may be forwarded, false if they should be
- * dropped.
- *
- * 'in_port' must be the xport that corresponds to flow->in_port.
- * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull).
- *
- * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as
- * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as
- * checked by input_vid_is_valid().
- *
- * May also add tags to '*tags', although the current implementation only does
- * so in one special case.
- */
-static bool
-is_admissible(struct xlate_ctx *ctx, struct xport *in_port,
- uint16_t vlan)
+/* Updates multicast snooping table 'ms' given that a packet matching 'flow'
+ * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */
+static void
+update_mcast_snooping_table4__(const struct xbridge *xbridge,
+ const struct flow *flow,
+ struct mcast_snooping *ms, int vlan,
+ struct xbundle *in_xbundle,
+ const struct dp_packet *packet)
+ OVS_REQ_WRLOCK(ms->rwlock)
{
- struct xbundle *in_xbundle = in_port->xbundle;
- const struct xbridge *xbridge = ctx->xbridge;
- struct flow *flow = &ctx->xin->flow;
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30);
+ int count;
+ ovs_be32 ip4 = flow->igmp_group_ip4;
+
+ switch (ntohs(flow->tp_src)) {
+ case IGMP_HOST_MEMBERSHIP_REPORT:
+ case IGMPV2_HOST_MEMBERSHIP_REPORT:
+ if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping learned that "
+ IP_FMT" is on port %s in VLAN %d",
+ xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan);
+ }
+ break;
+ case IGMP_HOST_LEAVE_MESSAGE:
+ if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping leaving "
+ IP_FMT" is on port %s in VLAN %d",
+ xbridge->name, IP_ARGS(ip4), in_xbundle->name, vlan);
+ }
+ break;
+ case IGMP_HOST_MEMBERSHIP_QUERY:
+ if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan,
+ in_xbundle->ofbundle)) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query from "
+ IP_FMT" is on port %s in VLAN %d",
+ xbridge->name, IP_ARGS(flow->nw_src),
+ in_xbundle->name, vlan);
+ }
+ break;
+ case IGMPV3_HOST_MEMBERSHIP_REPORT:
+ if ((count = mcast_snooping_add_report(ms, packet, vlan,
+ in_xbundle->ofbundle))) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d "
+ "addresses on port %s in VLAN %d",
+ xbridge->name, count, in_xbundle->name, vlan);
+ }
+ break;
+ }
+}
- /* Drop frames for reserved multicast addresses
- * only if forward_bpdu option is absent. */
- if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) {
- xlate_report(ctx, "packet has reserved destination MAC, dropping");
- return false;
+static void
+update_mcast_snooping_table6__(const struct xbridge *xbridge,
+ const struct flow *flow,
+ struct mcast_snooping *ms, int vlan,
+ struct xbundle *in_xbundle,
+ const struct dp_packet *packet)
+ OVS_REQ_WRLOCK(ms->rwlock)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 30);
+ int count;
+
+ switch (ntohs(flow->tp_src)) {
+ case MLD_QUERY:
+ if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any)
+ && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping query on port %s"
+ "in VLAN %d",
+ xbridge->name, in_xbundle->name, vlan);
+ }
+ break;
+ case MLD_REPORT:
+ case MLD_DONE:
+ case MLD2_REPORT:
+ count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle);
+ if (count) {
+ VLOG_DBG_RL(&rl, "bridge %s: multicast snooping processed %d "
+ "addresses on port %s in VLAN %d",
+ xbridge->name, count, in_xbundle->name, vlan);
+ }
+ break;
}
+}
- if (in_xbundle->bond) {
- struct mac_entry *mac;
+/* Updates multicast snooping table 'ms' given that a packet matching 'flow'
+ * was received on 'in_xbundle' in 'vlan'. */
+static void
+update_mcast_snooping_table(const struct xbridge *xbridge,
+ const struct flow *flow, int vlan,
+ struct xbundle *in_xbundle,
+ const struct dp_packet *packet)
+{
+ struct mcast_snooping *ms = xbridge->ms;
+ struct xlate_cfg *xcfg;
+ struct xbundle *mcast_xbundle;
+ struct mcast_port_bundle *fport;
- switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport,
- flow->dl_dst)) {
- case BV_ACCEPT:
+ /* Don't learn the OFPP_NONE port. */
+ if (in_xbundle == &ofpp_none_bundle) {
+ return;
+ }
+
+ /* Don't learn from flood ports */
+ mcast_xbundle = NULL;
+ ovs_rwlock_wrlock(&ms->rwlock);
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ LIST_FOR_EACH(fport, node, &ms->fport_list) {
+ mcast_xbundle = xbundle_lookup(xcfg, fport->port);
+ if (mcast_xbundle == in_xbundle) {
break;
+ }
+ }
- case BV_DROP:
- xlate_report(ctx, "bonding refused admissibility, dropping");
- return false;
+ if (!mcast_xbundle || mcast_xbundle != in_xbundle) {
+ if (flow->dl_type == htons(ETH_TYPE_IP)) {
+ update_mcast_snooping_table4__(xbridge, flow, ms, vlan,
+ in_xbundle, packet);
+ } else {
+ update_mcast_snooping_table6__(xbridge, flow, ms, vlan,
+ in_xbundle, packet);
+ }
+ }
+ ovs_rwlock_unlock(&ms->rwlock);
+}
+
+/* send the packet to ports having the multicast group learned */
+static void
+xlate_normal_mcast_send_group(struct xlate_ctx *ctx,
+ struct mcast_snooping *ms OVS_UNUSED,
+ struct mcast_group *grp,
+ struct xbundle *in_xbundle, uint16_t vlan)
+ OVS_REQ_RDLOCK(ms->rwlock)
+{
+ struct xlate_cfg *xcfg;
+ struct mcast_group_bundle *b;
+ struct xbundle *mcast_xbundle;
+
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) {
+ mcast_xbundle = xbundle_lookup(xcfg, b->port);
+ if (mcast_xbundle && mcast_xbundle != in_xbundle) {
+ xlate_report(ctx, "forwarding to mcast group port");
+ output_normal(ctx, mcast_xbundle, vlan);
+ } else if (!mcast_xbundle) {
+ xlate_report(ctx, "mcast group port is unknown, dropping");
+ } else {
+ xlate_report(ctx, "mcast group port is input port, dropping");
+ }
+ }
+}
+
+/* send the packet to ports connected to multicast routers */
+static void
+xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx,
+ struct mcast_snooping *ms,
+ struct xbundle *in_xbundle, uint16_t vlan)
+ OVS_REQ_RDLOCK(ms->rwlock)
+{
+ struct xlate_cfg *xcfg;
+ struct mcast_mrouter_bundle *mrouter;
+ struct xbundle *mcast_xbundle;
+
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) {
+ mcast_xbundle = xbundle_lookup(xcfg, mrouter->port);
+ if (mcast_xbundle && mcast_xbundle != in_xbundle) {
+ xlate_report(ctx, "forwarding to mcast router port");
+ output_normal(ctx, mcast_xbundle, vlan);
+ } else if (!mcast_xbundle) {
+ xlate_report(ctx, "mcast router port is unknown, dropping");
+ } else {
+ xlate_report(ctx, "mcast router port is input port, dropping");
+ }
+ }
+}
+
+/* send the packet to ports flagged to be flooded */
+static void
+xlate_normal_mcast_send_fports(struct xlate_ctx *ctx,
+ struct mcast_snooping *ms,
+ struct xbundle *in_xbundle, uint16_t vlan)
+ OVS_REQ_RDLOCK(ms->rwlock)
+{
+ struct xlate_cfg *xcfg;
+ struct mcast_port_bundle *fport;
+ struct xbundle *mcast_xbundle;
+
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ LIST_FOR_EACH(fport, node, &ms->fport_list) {
+ mcast_xbundle = xbundle_lookup(xcfg, fport->port);
+ if (mcast_xbundle && mcast_xbundle != in_xbundle) {
+ xlate_report(ctx, "forwarding to mcast flood port");
+ output_normal(ctx, mcast_xbundle, vlan);
+ } else if (!mcast_xbundle) {
+ xlate_report(ctx, "mcast flood port is unknown, dropping");
+ } else {
+ xlate_report(ctx, "mcast flood port is input port, dropping");
+ }
+ }
+}
- case BV_DROP_IF_MOVED:
- ovs_rwlock_rdlock(&xbridge->ml->rwlock);
- mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan);
- if (mac && mac->port.p != in_xbundle->ofbundle &&
- (!is_gratuitous_arp(flow, &ctx->xout->wc)
- || mac_entry_is_grat_arp_locked(mac))) {
- ovs_rwlock_unlock(&xbridge->ml->rwlock);
- xlate_report(ctx, "SLB bond thinks this packet looped back, "
- "dropping");
- return false;
- }
- ovs_rwlock_unlock(&xbridge->ml->rwlock);
- break;
+/* forward the Reports to configured ports */
+static void
+xlate_normal_mcast_send_rports(struct xlate_ctx *ctx,
+ struct mcast_snooping *ms,
+ struct xbundle *in_xbundle, uint16_t vlan)
+ OVS_REQ_RDLOCK(ms->rwlock)
+{
+ struct xlate_cfg *xcfg;
+ struct mcast_port_bundle *rport;
+ struct xbundle *mcast_xbundle;
+
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ LIST_FOR_EACH(rport, node, &ms->rport_list) {
+ mcast_xbundle = xbundle_lookup(xcfg, rport->port);
+ if (mcast_xbundle && mcast_xbundle != in_xbundle) {
+ xlate_report(ctx, "forwarding Report to mcast flagged port");
+ output_normal(ctx, mcast_xbundle, vlan);
+ } else if (!mcast_xbundle) {
+ xlate_report(ctx, "mcast port is unknown, dropping the Report");
+ } else {
+ xlate_report(ctx, "mcast port is input port, dropping the Report");
}
}
+}
- return true;
+static void
+xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle,
+ uint16_t vlan)
+{
+ struct xbundle *xbundle;
+
+ LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) {
+ if (xbundle != in_xbundle
+ && xbundle_includes_vlan(xbundle, vlan)
+ && xbundle->floodable
+ && !xbundle_mirror_out(ctx->xbridge, xbundle)) {
+ output_normal(ctx, xbundle, vlan);
+ }
+ }
+ ctx->nf_output_iface = NF_OUT_FLOOD;
}
static void
xlate_normal(struct xlate_ctx *ctx)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
+ struct flow_wildcards *wc = ctx->wc;
struct flow *flow = &ctx->xin->flow;
struct xbundle *in_xbundle;
struct xport *in_port;
uint16_t vlan;
uint16_t vid;
- ctx->xout->has_normal = true;
-
memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
/* Save enough info to update mac learning table later. */
entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL);
- entry->u.normal.ofproto = ctx->xin->ofproto;
+ entry->u.normal.ofproto = ctx->xbridge->ofproto;
entry->u.normal.flow = xmemdup(flow, sizeof *flow);
entry->u.normal.vlan = vlan;
}
/* Determine output bundle. */
- ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock);
- mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan);
- mac_port = mac ? mac->port.p : NULL;
- ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock);
-
- if (mac_port) {
- struct xbundle *mac_xbundle = xbundle_lookup(mac_port);
- if (mac_xbundle && mac_xbundle != in_xbundle) {
- xlate_report(ctx, "forwarding to learned port");
- output_normal(ctx, mac_xbundle, vlan);
- } else if (!mac_xbundle) {
- xlate_report(ctx, "learned port is unknown, dropping");
+ if (mcast_snooping_enabled(ctx->xbridge->ms)
+ && !eth_addr_is_broadcast(flow->dl_dst)
+ && eth_addr_is_multicast(flow->dl_dst)
+ && is_ip_any(flow)) {
+ struct mcast_snooping *ms = ctx->xbridge->ms;
+ struct mcast_group *grp = NULL;
+
+ if (is_igmp(flow)) {
+ if (mcast_snooping_is_membership(flow->tp_src) ||
+ mcast_snooping_is_query(flow->tp_src)) {
+ if (ctx->xin->may_learn && ctx->xin->packet) {
+ update_mcast_snooping_table(ctx->xbridge, flow, vlan,
+ in_xbundle, ctx->xin->packet);
+ }
+ /*
+ * IGMP packets need to take the slow path, in order to be
+ * processed for mdb updates. That will prevent expires
+ * firing off even after hosts have sent reports.
+ */
+ ctx->xout->slow |= SLOW_ACTION;
+ }
+
+ if (mcast_snooping_is_membership(flow->tp_src)) {
+ ovs_rwlock_rdlock(&ms->rwlock);
+ xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan);
+ /* RFC4541: section 2.1.1, item 1: A snooping switch should
+ * forward IGMP Membership Reports only to those ports where
+ * multicast routers are attached. Alternatively stated: a
+ * snooping switch should not forward IGMP Membership Reports
+ * to ports on which only hosts are attached.
+ * An administrative control may be provided to override this
+ * restriction, allowing the report messages to be flooded to
+ * other ports. */
+ xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan);
+ ovs_rwlock_unlock(&ms->rwlock);
+ } else {
+ xlate_report(ctx, "multicast traffic, flooding");
+ xlate_normal_flood(ctx, in_xbundle, vlan);
+ }
+ return;
+ } else if (is_mld(flow)) {
+ ctx->xout->slow |= SLOW_ACTION;
+ if (ctx->xin->may_learn && ctx->xin->packet) {
+ update_mcast_snooping_table(ctx->xbridge, flow, vlan,
+ in_xbundle, ctx->xin->packet);
+ }
+ if (is_mld_report(flow)) {
+ ovs_rwlock_rdlock(&ms->rwlock);
+ xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan);
+ xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan);
+ ovs_rwlock_unlock(&ms->rwlock);
+ } else {
+ xlate_report(ctx, "MLD query, flooding");
+ xlate_normal_flood(ctx, in_xbundle, vlan);
+ }
+ } else {
+ if ((flow->dl_type == htons(ETH_TYPE_IP)
+ && ip_is_local_multicast(flow->nw_dst))
+ || (flow->dl_type == htons(ETH_TYPE_IPV6)
+ && ipv6_is_all_hosts(&flow->ipv6_dst))) {
+ /* RFC4541: section 2.1.2, item 2: Packets with a dst IP
+ * address in the 224.0.0.x range which are not IGMP must
+ * be forwarded on all ports */
+ xlate_report(ctx, "RFC4541: section 2.1.2, item 2, flooding");
+ xlate_normal_flood(ctx, in_xbundle, vlan);
+ return;
+ }
+ }
+
+ /* forwarding to group base ports */
+ ovs_rwlock_rdlock(&ms->rwlock);
+ if (flow->dl_type == htons(ETH_TYPE_IP)) {
+ grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan);
+ } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) {
+ grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan);
+ }
+ if (grp) {
+ xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan);
+ xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan);
+ xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan);
} else {
- xlate_report(ctx, "learned port is input port, dropping");
+ if (mcast_snooping_flood_unreg(ms)) {
+ xlate_report(ctx, "unregistered multicast, flooding");
+ xlate_normal_flood(ctx, in_xbundle, vlan);
+ } else {
+ xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan);
+ xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan);
+ }
}
+ ovs_rwlock_unlock(&ms->rwlock);
} else {
- struct xbundle *xbundle;
-
- xlate_report(ctx, "no learned MAC for destination, flooding");
- LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) {
- if (xbundle != in_xbundle
- && xbundle_includes_vlan(xbundle, vlan)
- && xbundle->floodable
- && !xbundle_mirror_out(ctx->xbridge, xbundle)) {
- output_normal(ctx, xbundle, vlan);
+ ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock);
+ mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan);
+ mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL;
+ ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock);
+
+ if (mac_port) {
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port);
+ if (mac_xbundle && mac_xbundle != in_xbundle) {
+ xlate_report(ctx, "forwarding to learned port");
+ output_normal(ctx, mac_xbundle, vlan);
+ } else if (!mac_xbundle) {
+ xlate_report(ctx, "learned port is unknown, dropping");
+ } else {
+ xlate_report(ctx, "learned port is input port, dropping");
}
+ } else {
+ xlate_report(ctx, "no learned MAC for destination, flooding");
+ xlate_normal_flood(ctx, in_xbundle, vlan);
}
- ctx->xout->nf_output_iface = NF_OUT_FLOOD;
}
}
-/* Compose SAMPLE action for sFlow or IPFIX. The given probability is
- * the number of packets out of UINT32_MAX to sample. The given
- * cookie is passed back in the callback for each sampled packet.
+/* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The
+ * 'probability' is the number of packets out of UINT32_MAX to sample. The
+ * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for
+ * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the
+ * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an
+ * OVS_USERSPACE_ATTR_ACTIONS attribute is added.
*/
static size_t
-compose_sample_action(const struct xbridge *xbridge,
- struct ofpbuf *odp_actions,
- const struct flow *flow,
+compose_sample_action(struct xlate_ctx *ctx,
const uint32_t probability,
const union user_action_cookie *cookie,
- const size_t cookie_size)
+ const size_t cookie_size,
+ const odp_port_t tunnel_out_port,
+ bool include_actions)
{
- size_t sample_offset, actions_offset;
- odp_port_t odp_port;
- int cookie_offset;
- uint32_t pid;
+ size_t sample_offset = nl_msg_start_nested(ctx->odp_actions,
+ OVS_ACTION_ATTR_SAMPLE);
- sample_offset = nl_msg_start_nested(odp_actions, OVS_ACTION_ATTR_SAMPLE);
+ nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
- nl_msg_put_u32(odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, probability);
+ size_t actions_offset = nl_msg_start_nested(ctx->odp_actions,
+ OVS_SAMPLE_ATTR_ACTIONS);
- actions_offset = nl_msg_start_nested(odp_actions, OVS_SAMPLE_ATTR_ACTIONS);
+ odp_port_t odp_port = ofp_port_to_odp_port(
+ ctx->xbridge, ctx->xin->flow.in_port.ofp_port);
+ uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port,
+ flow_hash_5tuple(&ctx->xin->flow, 0));
+ int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size,
+ tunnel_out_port,
+ include_actions,
+ ctx->odp_actions);
- odp_port = ofp_port_to_odp_port(xbridge, flow->in_port.ofp_port);
- pid = dpif_port_get_pid(xbridge->dpif, odp_port,
- flow_hash_5tuple(flow, 0));
- cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size,
- odp_actions);
+ nl_msg_end_nested(ctx->odp_actions, actions_offset);
+ nl_msg_end_nested(ctx->odp_actions, sample_offset);
- nl_msg_end_nested(odp_actions, actions_offset);
- nl_msg_end_nested(odp_actions, sample_offset);
return cookie_offset;
}
+/* If sFLow is not enabled, returns 0 without doing anything.
+ *
+ * If sFlow is enabled, appends a template "sample" action to the ODP actions
+ * in 'ctx'. This action is a template because some of the information needed
+ * to fill it out is not available until flow translation is complete. In this
+ * case, this functions returns an offset, which is always nonzero, to pass
+ * later to fix_sflow_action() to fill in the rest of the template. */
+static size_t
+compose_sflow_action(struct xlate_ctx *ctx)
+{
+ struct dpif_sflow *sflow = ctx->xbridge->sflow;
+ if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) {
+ return 0;
+ }
+
+ union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW };
+ return compose_sample_action(ctx, dpif_sflow_get_probability(sflow),
+ &cookie, sizeof cookie.sflow, ODPP_NONE,
+ true);
+}
+
+/* If IPFIX is enabled, this appends a "sample" action to implement IPFIX to
+ * 'ctx->odp_actions'. */
+static void
+compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port)
+{
+ struct dpif_ipfix *ipfix = ctx->xbridge->ipfix;
+ odp_port_t tunnel_out_port = ODPP_NONE;
+
+ if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) {
+ return;
+ }
+
+ /* For input case, output_odp_port is ODPP_NONE, which is an invalid port
+ * number. */
+ if (output_odp_port == ODPP_NONE &&
+ !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) {
+ return;
+ }
+
+ /* For output case, output_odp_port is valid*/
+ if (output_odp_port != ODPP_NONE) {
+ if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) {
+ return;
+ }
+ /* If tunnel sampling is enabled, put an additional option attribute:
+ * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT
+ */
+ if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) &&
+ dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) {
+ tunnel_out_port = output_odp_port;
+ }
+ }
+
+ union user_action_cookie cookie = {
+ .ipfix = {
+ .type = USER_ACTION_COOKIE_IPFIX,
+ .output_odp_port = output_odp_port,
+ }
+ };
+ compose_sample_action(ctx,
+ dpif_ipfix_get_bridge_exporter_probability(ipfix),
+ &cookie, sizeof cookie.ipfix, tunnel_out_port,
+ false);
+}
+
+/* Fix "sample" action according to data collected while composing ODP actions,
+ * as described in compose_sflow_action().
+ *
+ * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */
static void
-compose_sflow_cookie(const struct xbridge *xbridge, ovs_be16 vlan_tci,
- odp_port_t odp_port, unsigned int n_outputs,
- union user_action_cookie *cookie)
+fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset)
{
- int ifindex;
+ const struct flow *base = &ctx->base_flow;
+ union user_action_cookie *cookie;
+
+ cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset,
+ sizeof cookie->sflow);
+ ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
cookie->type = USER_ACTION_COOKIE_SFLOW;
- cookie->sflow.vlan_tci = vlan_tci;
+ cookie->sflow.vlan_tci = base->vlan_tci;
/* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output
* port information") for the interpretation of cookie->output. */
- switch (n_outputs) {
+ switch (ctx->sflow_n_outputs) {
case 0:
/* 0x40000000 | 256 means "packet dropped for unknown reason". */
cookie->sflow.output = 0x40000000 | 256;
break;
case 1:
- ifindex = dpif_sflow_odp_port_to_ifindex(xbridge->sflow, odp_port);
- if (ifindex) {
- cookie->sflow.output = ifindex;
+ cookie->sflow.output = dpif_sflow_odp_port_to_ifindex(
+ ctx->xbridge->sflow, ctx->sflow_odp_port);
+ if (cookie->sflow.output) {
break;
}
/* Fall through. */
default:
/* 0x80000000 means "multiple output ports. */
- cookie->sflow.output = 0x80000000 | n_outputs;
+ cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs;
break;
}
}
-/* Compose SAMPLE action for sFlow bridge sampling. */
-static size_t
-compose_sflow_action(const struct xbridge *xbridge,
- struct ofpbuf *odp_actions,
- const struct flow *flow,
- odp_port_t odp_port)
+static bool
+process_special(struct xlate_ctx *ctx, const struct xport *xport)
{
- uint32_t probability;
- union user_action_cookie cookie;
+ const struct flow *flow = &ctx->xin->flow;
+ struct flow_wildcards *wc = ctx->wc;
+ const struct xbridge *xbridge = ctx->xbridge;
+ const struct dp_packet *packet = ctx->xin->packet;
+ enum slow_path_reason slow;
- if (!xbridge->sflow || flow->in_port.ofp_port == OFPP_NONE) {
- return 0;
+ if (!xport) {
+ slow = 0;
+ } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) {
+ if (packet) {
+ cfm_process_heartbeat(xport->cfm, packet);
+ }
+ slow = SLOW_CFM;
+ } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) {
+ if (packet) {
+ bfd_process_packet(xport->bfd, flow, packet);
+ /* If POLL received, immediately sends FINAL back. */
+ if (bfd_should_send_packet(xport->bfd)) {
+ ofproto_dpif_monitor_port_send_soon(xport->ofport);
+ }
+ }
+ slow = SLOW_BFD;
+ } else if (xport->xbundle && xport->xbundle->lacp
+ && flow->dl_type == htons(ETH_TYPE_LACP)) {
+ if (packet) {
+ lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet);
+ }
+ slow = SLOW_LACP;
+ } else if ((xbridge->stp || xbridge->rstp) &&
+ stp_should_process_flow(flow, wc)) {
+ if (packet) {
+ xbridge->stp
+ ? stp_process_packet(xport, packet)
+ : rstp_process_packet(xport, packet);
+ }
+ slow = SLOW_STP;
+ } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) {
+ if (packet) {
+ lldp_process_packet(xport->lldp, packet);
+ }
+ slow = SLOW_LLDP;
+ } else {
+ slow = 0;
}
- probability = dpif_sflow_get_probability(xbridge->sflow);
- compose_sflow_cookie(xbridge, htons(0), odp_port,
- odp_port == ODPP_NONE ? 0 : 1, &cookie);
-
- return compose_sample_action(xbridge, odp_actions, flow, probability,
- &cookie, sizeof cookie.sflow);
-}
-
-static void
-compose_flow_sample_cookie(uint16_t probability, uint32_t collector_set_id,
- uint32_t obs_domain_id, uint32_t obs_point_id,
- union user_action_cookie *cookie)
-{
- cookie->type = USER_ACTION_COOKIE_FLOW_SAMPLE;
- cookie->flow_sample.probability = probability;
- cookie->flow_sample.collector_set_id = collector_set_id;
- cookie->flow_sample.obs_domain_id = obs_domain_id;
- cookie->flow_sample.obs_point_id = obs_point_id;
+ if (slow) {
+ ctx->xout->slow |= slow;
+ return true;
+ } else {
+ return false;
+ }
}
-static void
-compose_ipfix_cookie(union user_action_cookie *cookie)
+static int
+tnl_route_lookup_flow(const struct flow *oflow,
+ struct in6_addr *ip, struct xport **out_port)
{
- cookie->type = USER_ACTION_COOKIE_IPFIX;
-}
+ char out_dev[IFNAMSIZ];
+ struct xbridge *xbridge;
+ struct xlate_cfg *xcfg;
+ struct in6_addr gw;
+ struct in6_addr dst;
-/* Compose SAMPLE action for IPFIX bridge sampling. */
-static void
-compose_ipfix_action(const struct xbridge *xbridge,
- struct ofpbuf *odp_actions,
- const struct flow *flow)
-{
- uint32_t probability;
- union user_action_cookie cookie;
+ dst = flow_tnl_dst(&oflow->tunnel);
+ if (!ovs_router_lookup(&dst, out_dev, &gw)) {
+ return -ENOENT;
+ }
- if (!xbridge->ipfix || flow->in_port.ofp_port == OFPP_NONE) {
- return;
+ if (ipv6_addr_is_set(&gw) &&
+ (!IN6_IS_ADDR_V4MAPPED(&gw) || in6_addr_get_mapped_ipv4(&gw))) {
+ *ip = gw;
+ } else {
+ *ip = dst;
}
- probability = dpif_ipfix_get_bridge_exporter_probability(xbridge->ipfix);
- compose_ipfix_cookie(&cookie);
+ xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ ovs_assert(xcfg);
+
+ HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) {
+ if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) {
+ struct xport *port;
- compose_sample_action(xbridge, odp_actions, flow, probability,
- &cookie, sizeof cookie.ipfix);
+ HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) {
+ if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) {
+ *out_port = port;
+ return 0;
+ }
+ }
+ }
+ }
+ return -ENOENT;
}
-/* SAMPLE action for sFlow must be first action in any given list of
- * actions. At this point we do not have all information required to
- * build it. So try to build sample action as complete as possible. */
-static void
-add_sflow_action(struct xlate_ctx *ctx)
+static int
+compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev,
+ struct dp_packet *packet)
{
- ctx->user_cookie_offset = compose_sflow_action(ctx->xbridge,
- &ctx->xout->odp_actions,
- &ctx->xin->flow, ODPP_NONE);
- ctx->sflow_odp_port = 0;
- ctx->sflow_n_outputs = 0;
+ struct xbridge *xbridge = out_dev->xbridge;
+ struct ofpact_output output;
+ struct flow flow;
+
+ ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
+ flow_extract(packet, &flow);
+ flow.in_port.ofp_port = out_dev->ofp_port;
+ output.port = OFPP_TABLE;
+ output.max_len = 0;
+
+ return ofproto_dpif_execute_actions__(xbridge->ofproto, &flow, NULL,
+ &output.ofpact, sizeof output,
+ ctx->recurse, ctx->resubmits, packet);
}
-/* SAMPLE action for IPFIX must be 1st or 2nd action in any given list
- * of actions, eventually after the SAMPLE action for sFlow. */
static void
-add_ipfix_action(struct xlate_ctx *ctx)
+tnl_send_nd_request(struct xlate_ctx *ctx, const struct xport *out_dev,
+ const struct eth_addr eth_src,
+ struct in6_addr * ipv6_src, struct in6_addr * ipv6_dst)
{
- compose_ipfix_action(ctx->xbridge, &ctx->xout->odp_actions,
- &ctx->xin->flow);
+ struct dp_packet packet;
+
+ dp_packet_init(&packet, 0);
+ compose_nd(&packet, eth_src, ipv6_src, ipv6_dst);
+ compose_table_xlate(ctx, out_dev, &packet);
+ dp_packet_uninit(&packet);
}
-/* Fix SAMPLE action according to data collected while composing ODP actions.
- * We need to fix SAMPLE actions OVS_SAMPLE_ATTR_ACTIONS attribute, i.e. nested
- * USERSPACE action's user-cookie which is required for sflow. */
static void
-fix_sflow_action(struct xlate_ctx *ctx)
+tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev,
+ const struct eth_addr eth_src,
+ ovs_be32 ip_src, ovs_be32 ip_dst)
{
- const struct flow *base = &ctx->base_flow;
- union user_action_cookie *cookie;
-
- if (!ctx->user_cookie_offset) {
- return;
- }
+ struct dp_packet packet;
- cookie = ofpbuf_at(&ctx->xout->odp_actions, ctx->user_cookie_offset,
- sizeof cookie->sflow);
- ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW);
+ dp_packet_init(&packet, 0);
+ compose_arp(&packet, ARP_OP_REQUEST,
+ eth_src, eth_addr_zero, true, ip_src, ip_dst);
- compose_sflow_cookie(ctx->xbridge, base->vlan_tci,
- ctx->sflow_odp_port, ctx->sflow_n_outputs, cookie);
+ compose_table_xlate(ctx, out_dev, &packet);
+ dp_packet_uninit(&packet);
}
-static enum slow_path_reason
-process_special(struct xlate_ctx *ctx, const struct flow *flow,
- const struct xport *xport, const struct ofpbuf *packet)
+static int
+build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport,
+ const struct flow *flow, odp_port_t tunnel_odp_port)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
- const struct xbridge *xbridge = ctx->xbridge;
-
- if (!xport) {
- return 0;
- } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) {
- if (packet) {
- cfm_process_heartbeat(xport->cfm, packet);
- }
- return SLOW_CFM;
- } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) {
- if (packet) {
- bfd_process_packet(xport->bfd, flow, packet);
- /* If POLL received, immediately sends FINAL back. */
- if (bfd_should_send_packet(xport->bfd)) {
- if (xport->peer) {
- ofproto_dpif_monitor_port_send_soon(xport->ofport);
- } else {
- ofproto_dpif_monitor_port_send_soon_safe(xport->ofport);
- }
- }
+ struct ovs_action_push_tnl tnl_push_data;
+ struct xport *out_dev = NULL;
+ ovs_be32 s_ip = 0, d_ip = 0;
+ struct in6_addr s_ip6 = in6addr_any;
+ struct in6_addr d_ip6 = in6addr_any;
+ struct eth_addr smac;
+ struct eth_addr dmac;
+ int err;
+ char buf_sip6[INET6_ADDRSTRLEN];
+ char buf_dip6[INET6_ADDRSTRLEN];
+
+ err = tnl_route_lookup_flow(flow, &d_ip6, &out_dev);
+ if (err) {
+ xlate_report(ctx, "native tunnel routing failed");
+ return err;
+ }
+
+ xlate_report(ctx, "tunneling to %s via %s",
+ ipv6_string_mapped(buf_dip6, &d_ip6),
+ netdev_get_name(out_dev->netdev));
+
+ /* Use mac addr of bridge port of the peer. */
+ err = netdev_get_etheraddr(out_dev->netdev, &smac);
+ if (err) {
+ xlate_report(ctx, "tunnel output device lacks Ethernet address");
+ return err;
+ }
+
+ d_ip = in6_addr_get_mapped_ipv4(&d_ip6);
+ if (d_ip) {
+ err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL);
+ if (err) {
+ xlate_report(ctx, "tunnel output device lacks IPv4 address");
+ return err;
}
- return SLOW_BFD;
- } else if (xport->xbundle && xport->xbundle->lacp
- && flow->dl_type == htons(ETH_TYPE_LACP)) {
- if (packet) {
- lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet);
+ in6_addr_set_mapped_ipv4(&s_ip6, s_ip);
+ } else {
+ err = netdev_get_in6(out_dev->netdev, &s_ip6);
+ if (err) {
+ xlate_report(ctx, "tunnel output device lacks IPv6 address");
+ return err;
}
- return SLOW_LACP;
- } else if (xbridge->stp && stp_should_process_flow(flow, wc)) {
- if (packet) {
- stp_process_packet(xport, packet);
+ }
+
+ err = tnl_neigh_lookup(out_dev->xbridge->name, &d_ip6, &dmac);
+ if (err) {
+ xlate_report(ctx, "neighbor cache miss for %s on bridge %s, "
+ "sending %s request",
+ buf_dip6, out_dev->xbridge->name, d_ip ? "ARP" : "ND");
+ if (d_ip) {
+ tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip);
+ } else {
+ tnl_send_nd_request(ctx, out_dev, smac, &s_ip6, &d_ip6);
}
- return SLOW_STP;
- } else {
- return 0;
+ return err;
+ }
+
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_NEIGH);
+ ovs_strlcpy(entry->u.tnl_neigh_cache.br_name, out_dev->xbridge->name,
+ sizeof entry->u.tnl_neigh_cache.br_name);
+ entry->u.tnl_neigh_cache.d_ipv6 = d_ip6;
+ }
+
+ xlate_report(ctx, "tunneling from "ETH_ADDR_FMT" %s"
+ " to "ETH_ADDR_FMT" %s",
+ ETH_ADDR_ARGS(smac), ipv6_string_mapped(buf_sip6, &s_ip6),
+ ETH_ADDR_ARGS(dmac), buf_dip6);
+
+ err = tnl_port_build_header(xport->ofport, flow,
+ dmac, smac, &s_ip6, &tnl_push_data);
+ if (err) {
+ return err;
}
+ tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port);
+ tnl_push_data.out_port = odp_to_u32(out_dev->odp_port);
+ odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data);
+ return 0;
+}
+
+static void
+xlate_commit_actions(struct xlate_ctx *ctx)
+{
+ bool use_masked = ctx->xbridge->support.masked_set_action;
+
+ ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow,
+ ctx->odp_actions, ctx->wc,
+ use_masked);
+}
+
+static void
+clear_conntrack(struct flow *flow)
+{
+ flow->ct_state = 0;
+ flow->ct_zone = 0;
+ flow->ct_mark = 0;
+ memset(&flow->ct_label, 0, sizeof flow->ct_label);
}
static void
compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port,
- bool check_stp)
+ const struct xlate_bond_recirc *xr, bool check_stp)
{
const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port);
- struct flow_wildcards *wc = &ctx->xout->wc;
+ struct flow_wildcards *wc = ctx->wc;
struct flow *flow = &ctx->xin->flow;
+ struct flow_tnl flow_tnl;
ovs_be16 flow_vlan_tci;
uint32_t flow_pkt_mark;
uint8_t flow_nw_tos;
odp_port_t out_port, odp_port;
+ bool tnl_push_pop_send = false;
uint8_t dscp;
/* If 'struct flow' gets additional metadata, we'll need to zero it out
* before traversing a patch port. */
- BUILD_ASSERT_DECL(FLOW_WC_SEQ == 26);
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
+ memset(&flow_tnl, 0, sizeof flow_tnl);
if (!xport) {
xlate_report(ctx, "Nonexistent output port");
return;
} else if (check_stp) {
if (is_stp(&ctx->base_flow)) {
- if (!xport_stp_listen_state(xport)) {
- xlate_report(ctx, "STP not in listening state, "
- "skipping bpdu output");
+ if (!xport_stp_should_forward_bpdu(xport) &&
+ !xport_rstp_should_manage_bpdu(xport)) {
+ if (ctx->xbridge->stp != NULL) {
+ xlate_report(ctx, "STP not in listening state, "
+ "skipping bpdu output");
+ } else if (ctx->xbridge->rstp != NULL) {
+ xlate_report(ctx, "RSTP not managing BPDU in this state, "
+ "skipping bpdu output");
+ }
return;
}
- } else if (!xport_stp_forward_state(xport)) {
- xlate_report(ctx, "STP not in forwarding state, "
- "skipping output");
+ } else if (!xport_stp_forward_state(xport) ||
+ !xport_rstp_forward_state(xport)) {
+ if (ctx->xbridge->stp != NULL) {
+ xlate_report(ctx, "STP not in forwarding state, "
+ "skipping output");
+ } else if (ctx->xbridge->rstp != NULL) {
+ xlate_report(ctx, "RSTP not in forwarding state, "
+ "skipping output");
+ }
return;
}
}
- if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) {
- ctx->xout->mirrors |= xbundle_mirror_dst(xport->xbundle->xbridge,
- xport->xbundle);
- }
-
if (xport->peer) {
const struct xport *peer = xport->peer;
struct flow old_flow = ctx->xin->flow;
- enum slow_path_reason special;
-
+ bool old_conntrack = ctx->conntracked;
+ bool old_was_mpls = ctx->was_mpls;
+ cls_version_t old_version = ctx->tables_version;
+ struct ofpbuf old_stack = ctx->stack;
+ union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)];
+ struct ofpbuf old_action_set = ctx->action_set;
+ uint64_t actset_stub[1024 / 8];
+
+ ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack);
+ ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub);
ctx->xbridge = peer->xbridge;
flow->in_port.ofp_port = peer->ofp_port;
flow->metadata = htonll(0);
memset(&flow->tunnel, 0, sizeof flow->tunnel);
memset(flow->regs, 0, sizeof flow->regs);
+ flow->actset_output = OFPP_UNSET;
+ ctx->conntracked = false;
+ clear_conntrack(flow);
- special = process_special(ctx, &ctx->xin->flow, peer,
- ctx->xin->packet);
- if (special) {
- ctx->xout->slow |= special;
- } else if (may_receive(peer, ctx)) {
- if (xport_stp_forward_state(peer)) {
+ /* The bridge is now known so obtain its table version. */
+ ctx->tables_version
+ = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto);
+
+ if (!process_special(ctx, peer) && may_receive(peer, ctx)) {
+ if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) {
xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true);
+ if (!ctx->freezing) {
+ xlate_action_set(ctx);
+ }
+ if (ctx->freezing) {
+ finish_freezing(ctx);
+ }
} else {
- /* Forwarding is disabled by STP. Let OFPP_NORMAL and the
- * learning action look at the packet, then drop it. */
+ /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and
+ * the learning action look at the packet, then drop it. */
struct flow old_base_flow = ctx->base_flow;
- size_t old_size = ofpbuf_size(&ctx->xout->odp_actions);
- mirror_mask_t old_mirrors = ctx->xout->mirrors;
+ size_t old_size = ctx->odp_actions->size;
+ mirror_mask_t old_mirrors = ctx->mirrors;
+
xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true);
- ctx->xout->mirrors = old_mirrors;
+ ctx->mirrors = old_mirrors;
ctx->base_flow = old_base_flow;
- ofpbuf_set_size(&ctx->xout->odp_actions, old_size);
+ ctx->odp_actions->size = old_size;
+
+ /* Undo changes that may have been done for freezing. */
+ ctx_cancel_freeze(ctx);
}
}
ctx->xin->flow = old_flow;
ctx->xbridge = xport->xbridge;
+ ofpbuf_uninit(&ctx->action_set);
+ ctx->action_set = old_action_set;
+ ofpbuf_uninit(&ctx->stack);
+ ctx->stack = old_stack;
+
+ /* Restore calling bridge's lookup version. */
+ ctx->tables_version = old_version;
+
+ /* The peer bridge popping MPLS should have no effect on the original
+ * bridge. */
+ ctx->was_mpls = old_was_mpls;
+
+ /* The peer bridge's conntrack execution should have no effect on the
+ * original bridge. */
+ ctx->conntracked = old_conntrack;
+
+ /* The fact that the peer bridge exits (for any reason) does not mean
+ * that the original bridge should exit. Specifically, if the peer
+ * bridge freezes translation, the original bridge must continue
+ * processing with the original, not the frozen packet! */
+ ctx->exit = false;
+
+ /* Peer bridge errors do not propagate back. */
+ ctx->error = XLATE_OK;
if (ctx->xin->resubmit_stats) {
netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats);
entry->u.dev.rx = netdev_ref(peer->netdev);
entry->u.dev.bfd = bfd_ref(peer->bfd);
}
-
return;
}
flow_pkt_mark = flow->pkt_mark;
flow_nw_tos = flow->nw_tos;
- if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) {
- wc->masks.nw_tos |= IP_DSCP_MASK;
- flow->nw_tos &= ~IP_DSCP_MASK;
- flow->nw_tos |= dscp;
+ if (count_skb_priorities(xport)) {
+ memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
+ if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) {
+ wc->masks.nw_tos |= IP_DSCP_MASK;
+ flow->nw_tos &= ~IP_DSCP_MASK;
+ flow->nw_tos |= dscp;
+ }
}
if (xport->is_tunnel) {
+ struct in6_addr dst;
/* Save tunnel metadata so that changes made due to
* the Logical (tunnel) Port are not visible for any further
* matches, while explicit set actions on tunnel metadata are.
*/
- struct flow_tnl flow_tnl = flow->tunnel;
- odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc);
+ flow_tnl = flow->tunnel;
+ odp_port = tnl_port_send(xport->ofport, flow, ctx->wc);
if (odp_port == ODPP_NONE) {
xlate_report(ctx, "Tunneling decided against output");
goto out; /* restore flow_nw_tos */
}
- if (flow->tunnel.ip_dst == ctx->orig_tunnel_ip_dst) {
+ dst = flow_tnl_dst(&flow->tunnel);
+ if (ipv6_addr_equals(&dst, &ctx->orig_tunnel_ipv6_dst)) {
xlate_report(ctx, "Not tunneling to our own address");
goto out; /* restore flow_nw_tos */
}
entry->u.dev.tx = netdev_ref(xport->netdev);
}
out_port = odp_port;
- commit_odp_tunnel_action(flow, &ctx->base_flow,
- &ctx->xout->odp_actions);
- flow->tunnel = flow_tnl; /* Restore tunnel metadata */
+ if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) {
+ xlate_report(ctx, "output to native tunnel");
+ tnl_push_pop_send = true;
+ } else {
+ xlate_report(ctx, "output to kernel tunnel");
+ commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions);
+ flow->tunnel = flow_tnl; /* Restore tunnel metadata */
+ }
} else {
odp_port = xport->odp_port;
out_port = odp_port;
}
if (out_port != ODPP_NONE) {
- ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow,
- &ctx->xout->odp_actions,
- &ctx->xout->wc);
+ xlate_commit_actions(ctx);
- if (ctx->xout->use_recirc) {
+ if (xr) {
struct ovs_action_hash *act_hash;
- struct xlate_recirc *xr = &ctx->xout->recirc;
/* Hash action. */
- act_hash = nl_msg_put_unspec_uninit(&ctx->xout->odp_actions,
+ act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions,
OVS_ACTION_ATTR_HASH,
sizeof *act_hash);
act_hash->hash_alg = xr->hash_alg;
act_hash->hash_basis = xr->hash_basis;
/* Recirc action. */
- nl_msg_put_u32(&ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC,
+ nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC,
xr->recirc_id);
} else {
- nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT,
- out_port);
+
+ if (tnl_push_pop_send) {
+ build_tunnel_send(ctx, xport, flow, odp_port);
+ flow->tunnel = flow_tnl; /* Restore tunnel metadata */
+ } else {
+ odp_port_t odp_tnl_port = ODPP_NONE;
+
+ /* XXX: Write better Filter for tunnel port. We can use inport
+ * int tunnel-port flow to avoid these checks completely. */
+ if (ofp_port == OFPP_LOCAL &&
+ ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) {
+
+ odp_tnl_port = tnl_port_map_lookup(flow, wc);
+ }
+
+ if (odp_tnl_port != ODPP_NONE) {
+ nl_msg_put_odp_port(ctx->odp_actions,
+ OVS_ACTION_ATTR_TUNNEL_POP,
+ odp_tnl_port);
+ } else {
+ /* Tunnel push-pop action is not compatible with
+ * IPFIX action. */
+ compose_ipfix_action(ctx, out_port);
+ nl_msg_put_odp_port(ctx->odp_actions,
+ OVS_ACTION_ATTR_OUTPUT,
+ out_port);
+ }
+ }
}
ctx->sflow_odp_port = odp_port;
ctx->sflow_n_outputs++;
- ctx->xout->nf_output_iface = ofp_port;
+ ctx->nf_output_iface = ofp_port;
+ }
+
+ if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) {
+ mirror_packet(ctx, xport->xbundle,
+ xbundle_mirror_dst(xport->xbundle->xbridge,
+ xport->xbundle));
}
out:
}
static void
-compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port)
+compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port,
+ const struct xlate_bond_recirc *xr)
{
- compose_output_action__(ctx, ofp_port, true);
+ compose_output_action__(ctx, ofp_port, xr, true);
}
static void
xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule)
{
struct rule_dpif *old_rule = ctx->rule;
+ ovs_be64 old_cookie = ctx->rule_cookie;
const struct rule_actions *actions;
if (ctx->xin->resubmit_stats) {
ctx->resubmits++;
ctx->recurse++;
ctx->rule = rule;
+ ctx->rule_cookie = rule_dpif_get_flow_cookie(rule);
actions = rule_dpif_get_actions(rule);
do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx);
+ ctx->rule_cookie = old_cookie;
ctx->rule = old_rule;
ctx->recurse--;
}
static bool
xlate_resubmit_resource_check(struct xlate_ctx *ctx)
{
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
-
if (ctx->recurse >= MAX_RESUBMIT_RECURSION + MAX_INTERNAL_RESUBMITS) {
- VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times",
- MAX_RESUBMIT_RECURSION);
+ XLATE_REPORT_ERROR(ctx, "resubmit actions recursed over %d times",
+ MAX_RESUBMIT_RECURSION);
+ ctx->error = XLATE_RECURSION_TOO_DEEP;
} else if (ctx->resubmits >= MAX_RESUBMITS + MAX_INTERNAL_RESUBMITS) {
- VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS);
- } else if (ofpbuf_size(&ctx->xout->odp_actions) > UINT16_MAX) {
- VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions");
- } else if (ofpbuf_size(&ctx->stack) >= 65536) {
- VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack");
+ XLATE_REPORT_ERROR(ctx, "over %d resubmit actions", MAX_RESUBMITS);
+ ctx->error = XLATE_TOO_MANY_RESUBMITS;
+ } else if (ctx->odp_actions->size > UINT16_MAX) {
+ XLATE_REPORT_ERROR(ctx, "resubmits yielded over 64 kB of actions");
+ /* NOT an error, as we'll be slow-pathing the flow in this case? */
+ ctx->exit = true; /* XXX: translation still terminated! */
+ } else if (ctx->stack.size >= 65536) {
+ XLATE_REPORT_ERROR(ctx, "resubmits yielded over 64 kB of stack");
+ ctx->error = XLATE_STACK_TOO_DEEP;
} else {
return true;
}
xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id,
bool may_packet_in, bool honor_table_miss)
{
+ /* Check if we need to recirculate before matching in a table. */
+ if (ctx->was_mpls) {
+ ctx_trigger_freeze(ctx);
+ return;
+ }
if (xlate_resubmit_resource_check(ctx)) {
- ofp_port_t old_in_port = ctx->xin->flow.in_port.ofp_port;
- bool skip_wildcards = ctx->xin->skip_wildcards;
uint8_t old_table_id = ctx->table_id;
struct rule_dpif *rule;
- enum rule_dpif_lookup_verdict verdict;
- enum ofputil_port_config config = 0;
ctx->table_id = table_id;
- /* Look up a flow with 'in_port' as the input port. Then restore the
- * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will
- * have surprising behavior). */
- ctx->xin->flow.in_port.ofp_port = in_port;
- verdict = rule_dpif_lookup_from_table(ctx->xbridge->ofproto,
- &ctx->xin->flow,
- !skip_wildcards
- ? &ctx->xout->wc : NULL,
- honor_table_miss,
- &ctx->table_id, &rule,
- ctx->xin->xcache != NULL);
- ctx->xin->flow.in_port.ofp_port = old_in_port;
-
- if (ctx->xin->resubmit_hook) {
- ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse);
- }
-
- switch (verdict) {
- case RULE_DPIF_LOOKUP_VERDICT_MATCH:
- goto match;
- case RULE_DPIF_LOOKUP_VERDICT_CONTROLLER:
- if (may_packet_in) {
- struct xport *xport;
-
- xport = get_ofp_port(ctx->xbridge,
- ctx->xin->flow.in_port.ofp_port);
- config = xport ? xport->config : 0;
- break;
- }
- /* Fall through to drop */
- case RULE_DPIF_LOOKUP_VERDICT_DROP:
- config = OFPUTIL_PC_NO_PACKET_IN;
- break;
- case RULE_DPIF_LOOKUP_VERDICT_DEFAULT:
- if (!ofproto_dpif_wants_packet_in_on_miss(ctx->xbridge->ofproto)) {
- config = OFPUTIL_PC_NO_PACKET_IN;
- }
- break;
- default:
- OVS_NOT_REACHED();
- }
+ rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto,
+ ctx->tables_version,
+ &ctx->xin->flow, ctx->xin->wc,
+ ctx->xin->resubmit_stats,
+ &ctx->table_id, in_port,
+ may_packet_in, honor_table_miss);
- choose_miss_rule(config, ctx->xbridge->miss_rule,
- ctx->xbridge->no_packet_in_rule, &rule,
- ctx->xin->xcache != NULL);
+ if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) {
+ ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1);
+ }
-match:
if (rule) {
/* Fill in the cache entry here instead of xlate_recursively
* to make the reference counting more explicit. We take a
entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE);
entry->u.rule = rule;
+ rule_dpif_ref(rule);
}
xlate_recursively(ctx, rule);
}
ctx->table_id = old_table_id;
return;
}
+}
- ctx->exit = true;
+static void
+xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group,
+ struct ofputil_bucket *bucket)
+{
+ if (ctx->xin->resubmit_stats) {
+ group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats);
+ }
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP);
+ entry->u.group.group = group_dpif_ref(group);
+ entry->u.group.bucket = bucket;
+ }
}
static void
-xlate_group_bucket(struct xlate_ctx *ctx, const struct ofputil_bucket *bucket)
+xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket)
{
uint64_t action_list_stub[1024 / 8];
- struct ofpbuf action_list, action_set;
-
- ofpbuf_use_const(&action_set, bucket->ofpacts, bucket->ofpacts_len);
- ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub);
+ struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub);
+ struct ofpbuf action_set = ofpbuf_const_initializer(bucket->ofpacts,
+ bucket->ofpacts_len);
+ struct flow old_flow = ctx->xin->flow;
+ bool old_was_mpls = ctx->was_mpls;
ofpacts_execute_action_set(&action_list, &action_set);
ctx->recurse++;
- do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx);
+ do_xlate_actions(action_list.data, action_list.size, ctx);
ctx->recurse--;
- ofpbuf_uninit(&action_set);
ofpbuf_uninit(&action_list);
+
+ /* Check if need to freeze. */
+ if (ctx->freezing) {
+ finish_freezing(ctx);
+ }
+
+ /* Roll back flow to previous state.
+ * This is equivalent to cloning the packet for each bucket.
+ *
+ * As a side effect any subsequently applied actions will
+ * also effectively be applied to a clone of the packet taken
+ * just before applying the all or indirect group.
+ *
+ * Note that group buckets are action sets, hence they cannot modify the
+ * main action set. Also any stack actions are ignored when executing an
+ * action set, so group buckets cannot change the stack either.
+ * However, we do allow resubmit actions in group buckets, which could
+ * break the above assumptions. It is up to the controller to not mess up
+ * with the action_set and stack in the tables resubmitted to from
+ * group buckets. */
+ ctx->xin->flow = old_flow;
+
+ /* The group bucket popping MPLS should have no effect after bucket
+ * execution. */
+ ctx->was_mpls = old_was_mpls;
+
+ /* The fact that the group bucket exits (for any reason) does not mean that
+ * the translation after the group action should exit. Specifically, if
+ * the group bucket freezes translation, the actions after the group action
+ * must continue processing with the original, not the frozen packet! */
+ ctx->exit = false;
}
static void
xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group)
{
- const struct ofputil_bucket *bucket;
- const struct list *buckets;
- struct flow old_flow = ctx->xin->flow;
+ struct ofputil_bucket *bucket;
+ const struct ovs_list *buckets;
group_dpif_get_buckets(group, &buckets);
- LIST_FOR_EACH (bucket, list_node, buckets) {
+ LIST_FOR_EACH (bucket, list_node, buckets) {
+ xlate_group_bucket(ctx, bucket);
+ }
+ xlate_group_stats(ctx, group, NULL);
+}
+
+static void
+xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group)
+{
+ struct ofputil_bucket *bucket;
+
+ bucket = group_first_live_bucket(ctx, group, 0);
+ if (bucket) {
xlate_group_bucket(ctx, bucket);
- /* Roll back flow to previous state.
- * This is equivalent to cloning the packet for each bucket.
- *
- * As a side effect any subsequently applied actions will
- * also effectively be applied to a clone of the packet taken
- * just before applying the all or indirect group. */
- ctx->xin->flow = old_flow;
+ xlate_group_stats(ctx, group, bucket);
}
}
static void
-xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group)
+xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group)
{
- const struct ofputil_bucket *bucket;
+ struct flow_wildcards *wc = ctx->wc;
+ struct ofputil_bucket *bucket;
+ uint32_t basis;
- bucket = group_first_live_bucket(ctx, group, 0);
+ basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0);
+ flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4);
+ bucket = group_best_live_bucket(ctx, group, basis);
if (bucket) {
xlate_group_bucket(ctx, bucket);
+ xlate_group_stats(ctx, group, bucket);
}
}
static void
-xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group)
+xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
- const struct ofputil_bucket *bucket;
+ struct mf_bitmap hash_fields = MF_BITMAP_INITIALIZER;
+ const struct field_array *fields;
+ struct ofputil_bucket *bucket;
uint32_t basis;
+ int i;
+
+ fields = group_dpif_get_fields(group);
+ basis = hash_uint64(group_dpif_get_selection_method_param(group));
+
+ /* Determine which fields to hash */
+ for (i = 0; i < MFF_N_IDS; i++) {
+ if (bitmap_is_set(fields->used.bm, i)) {
+ const struct mf_field *mf;
+
+ /* If the field is already present in 'hash_fields' then
+ * this loop has already checked that it and its pre-requisites
+ * are present in the flow and its pre-requisites have
+ * already been added to 'hash_fields'. There is nothing more
+ * to do here and as an optimisation the loop can continue. */
+ if (bitmap_is_set(hash_fields.bm, i)) {
+ continue;
+ }
+
+ mf = mf_from_id(i);
+
+ /* Only hash a field if it and its pre-requisites are present
+ * in the flow. */
+ if (!mf_are_prereqs_ok(mf, &ctx->xin->flow)) {
+ continue;
+ }
+
+ /* Hash both the field and its pre-requisites */
+ mf_bitmap_set_field_and_prereqs(mf, &hash_fields);
+ }
+ }
+
+ /* Hash the fields */
+ for (i = 0; i < MFF_N_IDS; i++) {
+ if (bitmap_is_set(hash_fields.bm, i)) {
+ const struct mf_field *mf = mf_from_id(i);
+ union mf_value value;
+ int j;
+
+ mf_get_value(mf, &ctx->xin->flow, &value);
+ /* This seems inefficient but so does apply_mask() */
+ for (j = 0; j < mf->n_bytes; j++) {
+ ((uint8_t *) &value)[j] &= ((uint8_t *) &fields->value[i])[j];
+ }
+ basis = hash_bytes(&value, mf->n_bytes, basis);
+
+ /* For tunnels, hash in whether the field is present. */
+ if (mf_is_tun_metadata(mf)) {
+ basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis);
+ }
+
+ mf_mask_field(mf, &ctx->wc->masks);
+ }
+ }
- basis = hash_mac(ctx->xin->flow.dl_dst, 0, 0);
bucket = group_best_live_bucket(ctx, group, basis);
if (bucket) {
- memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
xlate_group_bucket(ctx, bucket);
+ xlate_group_stats(ctx, group, bucket);
+ }
+}
+
+static void
+xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group)
+{
+ const char *selection_method = group_dpif_get_selection_method(group);
+
+ if (selection_method[0] == '\0') {
+ xlate_default_select_group(ctx, group);
+ } else if (!strcasecmp("hash", selection_method)) {
+ xlate_hash_fields_select_group(ctx, group);
+ } else {
+ /* Parsing of groups should ensure this never happens */
+ OVS_NOT_REACHED();
}
}
static void
xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group)
{
+ bool was_in_group = ctx->in_group;
ctx->in_group = true;
switch (group_dpif_get_type(group)) {
default:
OVS_NOT_REACHED();
}
- group_dpif_release(group);
-
- ctx->in_group = false;
-}
-
-static bool
-xlate_group_resource_check(struct xlate_ctx *ctx)
-{
- if (!xlate_resubmit_resource_check(ctx)) {
- return false;
- } else if (ctx->in_group) {
- /* Prevent nested translation of OpenFlow groups.
- *
- * OpenFlow allows this restriction. We enforce this restriction only
- * because, with the current architecture, we would otherwise have to
- * take a possibly recursive read lock on the ofgroup rwlock, which is
- * unsafe given that POSIX allows taking a read lock to block if there
- * is a thread blocked on taking the write lock. Other solutions
- * without this restriction are also possible, but seem unwarranted
- * given the current limited use of groups. */
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ group_dpif_unref(group);
- VLOG_ERR_RL(&rl, "cannot recursively translate OpenFlow group");
- return false;
- } else {
- return true;
- }
+ ctx->in_group = was_in_group;
}
static bool
xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id)
{
- if (xlate_group_resource_check(ctx)) {
+ if (xlate_resubmit_resource_check(ctx)) {
struct group_dpif *group;
bool got_group;
}
if (all) {
- compose_output_action__(ctx, xport->ofp_port, false);
+ compose_output_action__(ctx, xport->ofp_port, NULL, false);
} else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) {
- compose_output_action(ctx, xport->ofp_port);
+ compose_output_action(ctx, xport->ofp_port, NULL);
}
}
- ctx->xout->nf_output_iface = NF_OUT_FLOOD;
+ ctx->nf_output_iface = NF_OUT_FLOOD;
}
static void
execute_controller_action(struct xlate_ctx *ctx, int len,
enum ofp_packet_in_reason reason,
- uint16_t controller_id)
+ uint16_t controller_id,
+ const uint8_t *userdata, size_t userdata_len)
{
- struct ofproto_packet_in *pin;
- struct ofpbuf *packet;
- struct pkt_metadata md = PKT_METADATA_INITIALIZER(0);
+ struct dp_packet *packet;
ctx->xout->slow |= SLOW_CONTROLLER;
+ xlate_commit_actions(ctx);
if (!ctx->xin->packet) {
return;
}
- packet = ofpbuf_clone(ctx->xin->packet);
+ packet = dp_packet_clone(ctx->xin->packet);
+
+ odp_execute_actions(NULL, &packet, 1, false,
+ ctx->odp_actions->data, ctx->odp_actions->size, NULL);
+
+ /* A packet sent by an action in a table-miss rule is considered an
+ * explicit table miss. OpenFlow before 1.3 doesn't have that concept so
+ * it will get translated back to OFPR_ACTION for those versions. */
+ if (reason == OFPR_ACTION
+ && ctx->rule && rule_dpif_is_table_miss(ctx->rule)) {
+ reason = OFPR_EXPLICIT_MISS;
+ }
+
+ size_t packet_len = dp_packet_size(packet);
+
+ struct ofproto_async_msg *am = xmalloc(sizeof *am);
+ *am = (struct ofproto_async_msg) {
+ .controller_id = controller_id,
+ .oam = OAM_PACKET_IN,
+ .pin = {
+ .up = {
+ .public = {
+ .packet = dp_packet_steal_data(packet),
+ .packet_len = packet_len,
+ .reason = reason,
+ .table_id = ctx->table_id,
+ .cookie = ctx->rule_cookie,
+ .userdata = (userdata_len
+ ? xmemdup(userdata, userdata_len)
+ : NULL),
+ .userdata_len = userdata_len,
+ }
+ },
+ .max_len = len,
+ },
+ };
+ flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata);
+
+ ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am);
+ dp_packet_delete(packet);
+}
- ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow,
- &ctx->xout->odp_actions,
- &ctx->xout->wc);
-
- odp_execute_actions(NULL, packet, false, &md,
- ofpbuf_data(&ctx->xout->odp_actions),
- ofpbuf_size(&ctx->xout->odp_actions), NULL);
-
- pin = xmalloc(sizeof *pin);
- pin->up.packet_len = ofpbuf_size(packet);
- pin->up.packet = ofpbuf_steal_data(packet);
- pin->up.reason = reason;
- pin->up.table_id = ctx->table_id;
- pin->up.cookie = (ctx->rule
- ? rule_dpif_get_flow_cookie(ctx->rule)
- : OVS_BE64_MAX);
-
- flow_get_metadata(&ctx->xin->flow, &pin->up.fmd);
-
- pin->controller_id = controller_id;
- pin->send_len = len;
- /* If a rule is a table-miss rule then this is
- * a table-miss handled by a table-miss rule.
- *
- * Else, if rule is internal and has a controller action,
- * the later being implied by the rule being processed here,
- * then this is a table-miss handled without a table-miss rule.
- *
- * Otherwise this is not a table-miss. */
- pin->miss_type = OFPROTO_PACKET_IN_NO_MISS;
- if (ctx->rule) {
- if (rule_dpif_is_table_miss(ctx->rule)) {
- pin->miss_type = OFPROTO_PACKET_IN_MISS_FLOW;
- } else if (rule_dpif_is_internal(ctx->rule)) {
- pin->miss_type = OFPROTO_PACKET_IN_MISS_WITHOUT_FLOW;
+static void
+emit_continuation(struct xlate_ctx *ctx, const struct frozen_state *state)
+{
+ struct ofproto_async_msg *am = xmalloc(sizeof *am);
+ *am = (struct ofproto_async_msg) {
+ .controller_id = ctx->pause->controller_id,
+ .oam = OAM_PACKET_IN,
+ .pin = {
+ .up = {
+ .public = {
+ .userdata = xmemdup(ctx->pause->userdata,
+ ctx->pause->userdata_len),
+ .userdata_len = ctx->pause->userdata_len,
+ .packet = xmemdup(dp_packet_data(ctx->xin->packet),
+ dp_packet_size(ctx->xin->packet)),
+ .packet_len = dp_packet_size(ctx->xin->packet),
+ },
+ .bridge = *ofproto_dpif_get_uuid(ctx->xbridge->ofproto),
+ .stack = xmemdup(state->stack,
+ state->n_stack * sizeof *state->stack),
+ .n_stack = state->n_stack,
+ .mirrors = state->mirrors,
+ .conntracked = state->conntracked,
+ .actions = xmemdup(state->ofpacts, state->ofpacts_len),
+ .actions_len = state->ofpacts_len,
+ .action_set = xmemdup(state->action_set,
+ state->action_set_len),
+ .action_set_len = state->action_set_len,
+ },
+ .max_len = UINT16_MAX,
+ },
+ };
+ flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata);
+ ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am);
+}
+
+static void
+finish_freezing__(struct xlate_ctx *ctx, uint8_t table)
+{
+ ovs_assert(ctx->freezing);
+
+ struct frozen_state state = {
+ .table_id = table,
+ .ofproto_uuid = *ofproto_dpif_get_uuid(ctx->xbridge->ofproto),
+ .stack = ctx->stack.data,
+ .n_stack = ctx->stack.size / sizeof(union mf_subvalue),
+ .mirrors = ctx->mirrors,
+ .conntracked = ctx->conntracked,
+ .ofpacts = ctx->frozen_actions.data,
+ .ofpacts_len = ctx->frozen_actions.size,
+ .action_set = ctx->action_set.data,
+ .action_set_len = ctx->action_set.size,
+ };
+ frozen_metadata_from_flow(&state.metadata, &ctx->xin->flow);
+
+ if (ctx->pause) {
+ if (ctx->xin->packet) {
+ emit_continuation(ctx, &state);
+ }
+ } else {
+ /* Allocate a unique recirc id for the given metadata state in the
+ * flow. An existing id, with a new reference to the corresponding
+ * recirculation context, will be returned if possible.
+ * The life-cycle of this recirc id is managed by associating it
+ * with the udpif key ('ukey') created for each new datapath flow. */
+ uint32_t id = recirc_alloc_id_ctx(&state);
+ if (!id) {
+ XLATE_REPORT_ERROR(ctx, "Failed to allocate recirculation id");
+ ctx->error = XLATE_NO_RECIRCULATION_CONTEXT;
+ return;
}
+ recirc_refs_add(&ctx->xout->recircs, id);
+
+ nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id);
}
- ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin);
- ofpbuf_delete(packet);
+
+ /* Undo changes done by freezing. */
+ ctx_cancel_freeze(ctx);
+}
+
+/* Called only when we're freezing. */
+static void
+finish_freezing(struct xlate_ctx *ctx)
+{
+ xlate_commit_actions(ctx);
+ finish_freezing__(ctx, 0);
+}
+
+/* Fork the pipeline here. The current packet will continue processing the
+ * current action list. A clone of the current packet will recirculate, skip
+ * the remainder of the current action list and asynchronously resume pipeline
+ * processing in 'table' with the current metadata and action set. */
+static void
+compose_recirculate_and_fork(struct xlate_ctx *ctx, uint8_t table)
+{
+ ctx->freezing = true;
+ finish_freezing__(ctx, table);
}
static void
compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
struct flow *flow = &ctx->xin->flow;
int n;
ovs_assert(eth_type_mpls(mpls->ethertype));
- n = flow_count_mpls_labels(flow, wc);
+ n = flow_count_mpls_labels(flow, ctx->wc);
if (!n) {
- ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow,
- &ctx->xout->odp_actions,
- &ctx->xout->wc);
+ xlate_commit_actions(ctx);
} else if (n >= FLOW_MAX_MPLS_LABELS) {
if (ctx->xin->packet != NULL) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an "
+ XLATE_REPORT_ERROR(ctx, "bridge %s: dropping packet on which an "
"MPLS push action can't be performed as it would "
"have more MPLS LSEs than the %d supported.",
ctx->xbridge->name, FLOW_MAX_MPLS_LABELS);
}
- ctx->exit = true;
+ ctx->error = XLATE_TOO_MANY_MPLS_LABELS;
return;
- } else if (n >= ctx->xbridge->max_mpls_depth) {
- COVERAGE_INC(xlate_actions_mpls_overflow);
- ctx->xout->slow |= SLOW_ACTION;
}
- flow_push_mpls(flow, n, mpls->ethertype, wc);
+ flow_push_mpls(flow, n, mpls->ethertype, ctx->wc);
}
static void
compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
struct flow *flow = &ctx->xin->flow;
- int n = flow_count_mpls_labels(flow, wc);
+ int n = flow_count_mpls_labels(flow, ctx->wc);
- if (!flow_pop_mpls(flow, n, eth_type, wc) && n >= FLOW_MAX_MPLS_LABELS) {
+ if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) {
+ if (ctx->xbridge->support.odp.recirc) {
+ ctx->was_mpls = true;
+ }
+ } else if (n >= FLOW_MAX_MPLS_LABELS) {
if (ctx->xin->packet != NULL) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
- VLOG_WARN_RL(&rl, "bridge %s: dropping packet on which an "
+ XLATE_REPORT_ERROR(ctx, "bridge %s: dropping packet on which an "
"MPLS pop action can't be performed as it has "
"more MPLS LSEs than the %d supported.",
ctx->xbridge->name, FLOW_MAX_MPLS_LABELS);
}
- ctx->exit = true;
- ofpbuf_clear(&ctx->xout->odp_actions);
+ ctx->error = XLATE_TOO_MANY_MPLS_LABELS;
+ ofpbuf_clear(ctx->odp_actions);
}
}
return false;
}
- ctx->xout->wc.masks.nw_ttl = 0xff;
+ ctx->wc->masks.nw_ttl = 0xff;
if (flow->nw_ttl > 1) {
flow->nw_ttl--;
return false;
for (i = 0; i < ids->n_controllers; i++) {
execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL,
- ids->cnt_ids[i]);
+ ids->cnt_ids[i], NULL, 0);
}
/* Stop processing for current table. */
compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label)
{
if (eth_type_mpls(ctx->xin->flow.dl_type)) {
- ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK);
+ ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK);
set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label);
}
}
compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc)
{
if (eth_type_mpls(ctx->xin->flow.dl_type)) {
- ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TC_MASK);
+ ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK);
set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc);
}
}
compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl)
{
if (eth_type_mpls(ctx->xin->flow.dl_type)) {
- ctx->xout->wc.masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK);
+ ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK);
set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl);
}
}
compose_dec_mpls_ttl_action(struct xlate_ctx *ctx)
{
struct flow *flow = &ctx->xin->flow;
- uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]);
- struct flow_wildcards *wc = &ctx->xout->wc;
- memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse);
if (eth_type_mpls(flow->dl_type)) {
+ uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]);
+
+ ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK);
if (ttl > 1) {
ttl--;
set_mpls_lse_ttl(&flow->mpls_lse[0], ttl);
return false;
} else {
- execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0);
-
- /* Stop processing for current table. */
- return true;
+ execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0,
+ NULL, 0);
}
- } else {
- return true;
}
+
+ /* Stop processing for current table. */
+ return true;
}
static void
xlate_output_action(struct xlate_ctx *ctx,
ofp_port_t port, uint16_t max_len, bool may_packet_in)
{
- ofp_port_t prev_nf_output_iface = ctx->xout->nf_output_iface;
+ ofp_port_t prev_nf_output_iface = ctx->nf_output_iface;
- ctx->xout->nf_output_iface = NF_OUT_DROP;
+ ctx->nf_output_iface = NF_OUT_DROP;
switch (port) {
case OFPP_IN_PORT:
- compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port);
+ compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL);
break;
case OFPP_TABLE:
xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port,
flood_packets(ctx, true);
break;
case OFPP_CONTROLLER:
- execute_controller_action(ctx, max_len, OFPR_ACTION, 0);
+ execute_controller_action(ctx, max_len,
+ (ctx->in_group ? OFPR_GROUP
+ : ctx->in_action_set ? OFPR_ACTION_SET
+ : OFPR_ACTION),
+ 0, NULL, 0);
break;
case OFPP_NONE:
break;
case OFPP_LOCAL:
default:
if (port != ctx->xin->flow.in_port.ofp_port) {
- compose_output_action(ctx, port);
+ compose_output_action(ctx, port, NULL);
} else {
xlate_report(ctx, "skipping output to input port");
}
}
if (prev_nf_output_iface == NF_OUT_FLOOD) {
- ctx->xout->nf_output_iface = NF_OUT_FLOOD;
- } else if (ctx->xout->nf_output_iface == NF_OUT_DROP) {
- ctx->xout->nf_output_iface = prev_nf_output_iface;
+ ctx->nf_output_iface = NF_OUT_FLOOD;
+ } else if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = prev_nf_output_iface;
} else if (prev_nf_output_iface != NF_OUT_DROP &&
- ctx->xout->nf_output_iface != NF_OUT_FLOOD) {
- ctx->xout->nf_output_iface = NF_OUT_MULTI;
+ ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
}
}
union mf_subvalue value;
memset(&value, 0xff, sizeof value);
- mf_write_subfield_flow(&or->src, &value, &ctx->xout->wc.masks);
+ mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks);
xlate_output_action(ctx, u16_to_ofp(port),
or->max_len, false);
}
/* Add datapath actions. */
flow_priority = ctx->xin->flow.skb_priority;
ctx->xin->flow.skb_priority = priority;
- compose_output_action(ctx, ofp_port);
+ compose_output_action(ctx, ofp_port, NULL);
ctx->xin->flow.skb_priority = flow_priority;
/* Update NetFlow output port. */
- if (ctx->xout->nf_output_iface == NF_OUT_DROP) {
- ctx->xout->nf_output_iface = ofp_port;
- } else if (ctx->xout->nf_output_iface != NF_OUT_FLOOD) {
- ctx->xout->nf_output_iface = NF_OUT_MULTI;
+ if (ctx->nf_output_iface == NF_OUT_DROP) {
+ ctx->nf_output_iface = ofp_port;
+ } else if (ctx->nf_output_iface != NF_OUT_FLOOD) {
+ ctx->nf_output_iface = NF_OUT_MULTI;
}
}
{
ofp_port_t port;
- port = bundle_execute(bundle, &ctx->xin->flow, &ctx->xout->wc,
- slave_enabled_cb,
+ port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb,
CONST_CAST(struct xbridge *, ctx->xbridge));
if (bundle->dst.field) {
- nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow,
- &ctx->xout->wc);
+ nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc);
} else {
xlate_output_action(ctx, port, 0, false);
}
}
static void
-xlate_learn_action(struct xlate_ctx *ctx,
- const struct ofpact_learn *learn)
+xlate_learn_action__(struct xlate_ctx *ctx, const struct ofpact_learn *learn,
+ struct ofputil_flow_mod *fm, struct ofpbuf *ofpacts)
+{
+ learn_execute(learn, &ctx->xin->flow, fm, ofpacts);
+ if (ctx->xin->may_learn) {
+ ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm);
+ }
+}
+
+static void
+xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn)
+{
+ learn_mask(learn, ctx->wc);
+
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN);
+ entry->u.learn.ofproto = ctx->xbridge->ofproto;
+ entry->u.learn.fm = xmalloc(sizeof *entry->u.learn.fm);
+ entry->u.learn.ofpacts = ofpbuf_new(64);
+ xlate_learn_action__(ctx, learn, entry->u.learn.fm,
+ entry->u.learn.ofpacts);
+ } else if (ctx->xin->may_learn) {
+ uint64_t ofpacts_stub[1024 / 8];
+ struct ofputil_flow_mod fm;
+ struct ofpbuf ofpacts;
+
+ ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
+ xlate_learn_action__(ctx, learn, &fm, &ofpacts);
+ ofpbuf_uninit(&ofpacts);
+ }
+}
+
+static void
+xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags,
+ uint16_t idle_timeout, uint16_t hard_timeout)
+{
+ if (tcp_flags & (TCP_FIN | TCP_RST)) {
+ rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout);
+ }
+}
+
+static void
+xlate_fin_timeout(struct xlate_ctx *ctx,
+ const struct ofpact_fin_timeout *oft)
{
- uint64_t ofpacts_stub[1024 / 8];
- struct ofputil_flow_mod fm;
- struct ofpbuf ofpacts;
+ if (ctx->rule) {
+ xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags,
+ oft->fin_idle_timeout, oft->fin_hard_timeout);
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT);
+ /* XC_RULE already holds a reference on the rule, none is taken
+ * here. */
+ entry->u.fin.rule = ctx->rule;
+ entry->u.fin.idle = oft->fin_idle_timeout;
+ entry->u.fin.hard = oft->fin_hard_timeout;
+ }
+ }
+}
- ctx->xout->has_learn = true;
+static void
+xlate_sample_action(struct xlate_ctx *ctx,
+ const struct ofpact_sample *os)
+{
+ /* Scale the probability from 16-bit to 32-bit while representing
+ * the same percentage. */
+ uint32_t probability = (os->probability << 16) | os->probability;
- learn_mask(learn, &ctx->xout->wc);
+ if (!ctx->xbridge->support.variable_length_userdata) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
- if (!ctx->xin->may_learn) {
+ VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath "
+ "lacks support (needs Linux 3.10+ or kernel module from "
+ "OVS 1.11+)");
return;
}
- ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub);
- learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts);
- ofproto_dpif_flow_mod(ctx->xbridge->ofproto, &fm);
- ofpbuf_uninit(&ofpacts);
+ xlate_commit_actions(ctx);
- if (ctx->xin->xcache) {
- struct xc_entry *entry;
+ union user_action_cookie cookie = {
+ .flow_sample = {
+ .type = USER_ACTION_COOKIE_FLOW_SAMPLE,
+ .probability = os->probability,
+ .collector_set_id = os->collector_set_id,
+ .obs_domain_id = os->obs_domain_id,
+ .obs_point_id = os->obs_point_id,
+ }
+ };
+ compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample,
+ ODPP_NONE, false);
+}
- entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN);
- entry->u.learn.ofproto = ctx->xin->ofproto;
- /* Lookup the learned rule, taking a reference on it. The reference
- * is released when this cache entry is deleted. */
- rule_dpif_lookup(ctx->xbridge->ofproto, &ctx->xin->flow, NULL,
- &entry->u.learn.rule, true);
+static bool
+may_receive(const struct xport *xport, struct xlate_ctx *ctx)
+{
+ if (xport->config & (is_stp(&ctx->xin->flow)
+ ? OFPUTIL_PC_NO_RECV_STP
+ : OFPUTIL_PC_NO_RECV)) {
+ return false;
+ }
+
+ /* Only drop packets here if both forwarding and learning are
+ * disabled. If just learning is enabled, we need to have
+ * OFPP_NORMAL and the learning action have a look at the packet
+ * before we can drop it. */
+ if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) ||
+ (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) {
+ return false;
+ }
+
+ return true;
+}
+
+static void
+xlate_write_actions__(struct xlate_ctx *ctx,
+ const struct ofpact *ofpacts, size_t ofpacts_len)
+{
+ /* Maintain actset_output depending on the contents of the action set:
+ *
+ * - OFPP_UNSET, if there is no "output" action.
+ *
+ * - The output port, if there is an "output" action and no "group"
+ * action.
+ *
+ * - OFPP_UNSET, if there is a "group" action.
+ */
+ if (!ctx->action_set_has_group) {
+ const struct ofpact *a;
+ OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
+ if (a->type == OFPACT_OUTPUT) {
+ ctx->xin->flow.actset_output = ofpact_get_OUTPUT(a)->port;
+ } else if (a->type == OFPACT_GROUP) {
+ ctx->xin->flow.actset_output = OFPP_UNSET;
+ ctx->action_set_has_group = true;
+ break;
+ }
+ }
+ }
+
+ ofpbuf_put(&ctx->action_set, ofpacts, ofpacts_len);
+}
+
+static void
+xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact_nest *a)
+{
+ xlate_write_actions__(ctx, a->actions, ofpact_nest_get_action_len(a));
+}
+
+static void
+xlate_action_set(struct xlate_ctx *ctx)
+{
+ uint64_t action_list_stub[1024 / 64];
+ struct ofpbuf action_list;
+
+ ctx->in_action_set = true;
+ ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub);
+ ofpacts_execute_action_set(&action_list, &ctx->action_set);
+ /* Clear the action set, as it is not needed any more. */
+ ofpbuf_clear(&ctx->action_set);
+ do_xlate_actions(action_list.data, action_list.size, ctx);
+ ctx->in_action_set = false;
+ ofpbuf_uninit(&action_list);
+}
+
+static void
+freeze_put_unroll_xlate(struct xlate_ctx *ctx)
+{
+ struct ofpact_unroll_xlate *unroll = ctx->frozen_actions.header;
+
+ /* Restore the table_id and rule cookie for a potential PACKET
+ * IN if needed. */
+ if (!unroll ||
+ (ctx->table_id != unroll->rule_table_id
+ || ctx->rule_cookie != unroll->rule_cookie)) {
+ unroll = ofpact_put_UNROLL_XLATE(&ctx->frozen_actions);
+ unroll->rule_table_id = ctx->table_id;
+ unroll->rule_cookie = ctx->rule_cookie;
+ ctx->frozen_actions.header = unroll;
+ }
+}
+
+
+/* Copy actions 'a' through 'end' to ctx->frozen_actions, which will be
+ * executed after thawing. Inserts an UNROLL_XLATE action, if none is already
+ * present, before any action that may depend on the current table ID or flow
+ * cookie. */
+static void
+freeze_unroll_actions(const struct ofpact *a, const struct ofpact *end,
+ struct xlate_ctx *ctx)
+{
+ for (; a < end; a = ofpact_next(a)) {
+ switch (a->type) {
+ case OFPACT_OUTPUT_REG:
+ case OFPACT_GROUP:
+ case OFPACT_OUTPUT:
+ case OFPACT_CONTROLLER:
+ case OFPACT_DEC_MPLS_TTL:
+ case OFPACT_DEC_TTL:
+ /* These actions may generate asynchronous messages, which include
+ * table ID and flow cookie information. */
+ freeze_put_unroll_xlate(ctx);
+ break;
+
+ case OFPACT_RESUBMIT:
+ if (ofpact_get_RESUBMIT(a)->table_id == 0xff) {
+ /* This resubmit action is relative to the current table, so we
+ * need to track what table that is.*/
+ freeze_put_unroll_xlate(ctx);
+ }
+ break;
+
+ case OFPACT_SET_TUNNEL:
+ case OFPACT_REG_MOVE:
+ case OFPACT_SET_FIELD:
+ case OFPACT_STACK_PUSH:
+ case OFPACT_STACK_POP:
+ case OFPACT_LEARN:
+ case OFPACT_WRITE_METADATA:
+ case OFPACT_GOTO_TABLE:
+ case OFPACT_ENQUEUE:
+ case OFPACT_SET_VLAN_VID:
+ case OFPACT_SET_VLAN_PCP:
+ case OFPACT_STRIP_VLAN:
+ case OFPACT_PUSH_VLAN:
+ case OFPACT_SET_ETH_SRC:
+ case OFPACT_SET_ETH_DST:
+ case OFPACT_SET_IPV4_SRC:
+ case OFPACT_SET_IPV4_DST:
+ case OFPACT_SET_IP_DSCP:
+ case OFPACT_SET_IP_ECN:
+ case OFPACT_SET_IP_TTL:
+ case OFPACT_SET_L4_SRC_PORT:
+ case OFPACT_SET_L4_DST_PORT:
+ case OFPACT_SET_QUEUE:
+ case OFPACT_POP_QUEUE:
+ case OFPACT_PUSH_MPLS:
+ case OFPACT_POP_MPLS:
+ case OFPACT_SET_MPLS_LABEL:
+ case OFPACT_SET_MPLS_TC:
+ case OFPACT_SET_MPLS_TTL:
+ case OFPACT_MULTIPATH:
+ case OFPACT_BUNDLE:
+ case OFPACT_EXIT:
+ case OFPACT_UNROLL_XLATE:
+ case OFPACT_FIN_TIMEOUT:
+ case OFPACT_CLEAR_ACTIONS:
+ case OFPACT_WRITE_ACTIONS:
+ case OFPACT_METER:
+ case OFPACT_SAMPLE:
+ case OFPACT_DEBUG_RECIRC:
+ case OFPACT_CT:
+ case OFPACT_NAT:
+ /* These may not generate PACKET INs. */
+ break;
+
+ case OFPACT_NOTE:
+ case OFPACT_CONJUNCTION:
+ /* These need not be copied for restoration. */
+ continue;
+ }
+ /* Copy the action over. */
+ ofpbuf_put(&ctx->frozen_actions, a, OFPACT_ALIGN(a->len));
+ }
+}
+
+#define CHECK_MPLS_RECIRCULATION() \
+ if (ctx->was_mpls) { \
+ ctx_trigger_freeze(ctx); \
+ break; \
+ }
+#define CHECK_MPLS_RECIRCULATION_IF(COND) \
+ if (COND) { \
+ CHECK_MPLS_RECIRCULATION(); \
+ }
+
+static void
+put_ct_mark(const struct flow *flow, struct flow *base_flow,
+ struct ofpbuf *odp_actions, struct flow_wildcards *wc)
+{
+ struct {
+ uint32_t key;
+ uint32_t mask;
+ } odp_attr;
+
+ odp_attr.key = flow->ct_mark;
+ odp_attr.mask = wc->masks.ct_mark;
+
+ if (odp_attr.mask && odp_attr.key != base_flow->ct_mark) {
+ nl_msg_put_unspec(odp_actions, OVS_CT_ATTR_MARK, &odp_attr,
+ sizeof(odp_attr));
}
}
static void
-xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags,
- uint16_t idle_timeout, uint16_t hard_timeout)
+put_ct_label(const struct flow *flow, struct flow *base_flow,
+ struct ofpbuf *odp_actions, struct flow_wildcards *wc)
{
- if (tcp_flags & (TCP_FIN | TCP_RST)) {
- rule_dpif_reduce_timeouts(rule, idle_timeout, hard_timeout);
+ if (!ovs_u128_is_zero(&wc->masks.ct_label)
+ && !ovs_u128_equals(&flow->ct_label, &base_flow->ct_label)) {
+ struct {
+ ovs_u128 key;
+ ovs_u128 mask;
+ } *odp_ct_label;
+
+ odp_ct_label = nl_msg_put_unspec_uninit(odp_actions,
+ OVS_CT_ATTR_LABELS,
+ sizeof(*odp_ct_label));
+ odp_ct_label->key = flow->ct_label;
+ odp_ct_label->mask = wc->masks.ct_label;
}
}
static void
-xlate_fin_timeout(struct xlate_ctx *ctx,
- const struct ofpact_fin_timeout *oft)
+put_ct_helper(struct ofpbuf *odp_actions, struct ofpact_conntrack *ofc)
{
- if (ctx->rule) {
- xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags,
- oft->fin_idle_timeout, oft->fin_hard_timeout);
- if (ctx->xin->xcache) {
- struct xc_entry *entry;
-
- entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT);
- /* XC_RULE already holds a reference on the rule, none is taken
- * here. */
- entry->u.fin.rule = ctx->rule;
- entry->u.fin.idle = oft->fin_idle_timeout;
- entry->u.fin.hard = oft->fin_hard_timeout;
+ if (ofc->alg) {
+ if (ofc->alg == IPPORT_FTP) {
+ nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "ftp");
+ } else {
+ VLOG_WARN("Cannot serialize ct_helper %d\n", ofc->alg);
}
}
}
static void
-xlate_sample_action(struct xlate_ctx *ctx,
- const struct ofpact_sample *os)
+put_ct_nat(struct xlate_ctx *ctx)
{
- union user_action_cookie cookie;
- /* Scale the probability from 16-bit to 32-bit while representing
- * the same percentage. */
- uint32_t probability = (os->probability << 16) | os->probability;
-
- if (!ctx->xbridge->variable_length_userdata) {
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ struct ofpact_nat *ofn = ctx->ct_nat_action;
+ size_t nat_offset;
- VLOG_ERR_RL(&rl, "ignoring NXAST_SAMPLE action because datapath "
- "lacks support (needs Linux 3.10+ or kernel module from "
- "OVS 1.11+)");
- return;
- }
-
- ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow,
- &ctx->xout->odp_actions,
- &ctx->xout->wc);
-
- compose_flow_sample_cookie(os->probability, os->collector_set_id,
- os->obs_domain_id, os->obs_point_id, &cookie);
- compose_sample_action(ctx->xbridge, &ctx->xout->odp_actions, &ctx->xin->flow,
- probability, &cookie, sizeof cookie.flow_sample);
-}
-
-static bool
-may_receive(const struct xport *xport, struct xlate_ctx *ctx)
-{
- if (xport->config & (is_stp(&ctx->xin->flow)
- ? OFPUTIL_PC_NO_RECV_STP
- : OFPUTIL_PC_NO_RECV)) {
- return false;
+ if (!ofn) {
+ return;
}
- /* Only drop packets here if both forwarding and learning are
- * disabled. If just learning is enabled, we need to have
- * OFPP_NORMAL and the learning action have a look at the packet
- * before we can drop it. */
- if (!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) {
- return false;
+ nat_offset = nl_msg_start_nested(ctx->odp_actions, OVS_CT_ATTR_NAT);
+ if (ofn->flags & NX_NAT_F_SRC || ofn->flags & NX_NAT_F_DST) {
+ nl_msg_put_flag(ctx->odp_actions, ofn->flags & NX_NAT_F_SRC
+ ? OVS_NAT_ATTR_SRC : OVS_NAT_ATTR_DST);
+ if (ofn->flags & NX_NAT_F_PERSISTENT) {
+ nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PERSISTENT);
+ }
+ if (ofn->flags & NX_NAT_F_PROTO_HASH) {
+ nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_HASH);
+ } else if (ofn->flags & NX_NAT_F_PROTO_RANDOM) {
+ nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_RANDOM);
+ }
+ if (ofn->range_af == AF_INET) {
+ nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN,
+ ofn->range.addr.ipv4.min);
+ if (ofn->range.addr.ipv4.max &&
+ (ntohl(ofn->range.addr.ipv4.max)
+ > ntohl(ofn->range.addr.ipv4.min))) {
+ nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX,
+ ofn->range.addr.ipv4.max);
+ }
+ } else if (ofn->range_af == AF_INET6) {
+ nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN,
+ &ofn->range.addr.ipv6.min,
+ sizeof ofn->range.addr.ipv6.min);
+ if (!ipv6_mask_is_any(&ofn->range.addr.ipv6.max) &&
+ memcmp(&ofn->range.addr.ipv6.max, &ofn->range.addr.ipv6.min,
+ sizeof ofn->range.addr.ipv6.max) > 0) {
+ nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX,
+ &ofn->range.addr.ipv6.max,
+ sizeof ofn->range.addr.ipv6.max);
+ }
+ }
+ if (ofn->range_af != AF_UNSPEC && ofn->range.proto.min) {
+ nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MIN,
+ ofn->range.proto.min);
+ if (ofn->range.proto.max &&
+ ofn->range.proto.max > ofn->range.proto.min) {
+ nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MAX,
+ ofn->range.proto.max);
+ }
+ }
}
-
- return true;
+ nl_msg_end_nested(ctx->odp_actions, nat_offset);
}
static void
-xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a)
+compose_conntrack_action(struct xlate_ctx *ctx, struct ofpact_conntrack *ofc)
{
- struct ofpact_nest *on = ofpact_get_WRITE_ACTIONS(a);
- ofpbuf_put(&ctx->action_set, on->actions, ofpact_nest_get_action_len(on));
- ofpact_pad(&ctx->action_set);
-}
+ ovs_u128 old_ct_label = ctx->base_flow.ct_label;
+ uint32_t old_ct_mark = ctx->base_flow.ct_mark;
+ size_t ct_offset;
+ uint16_t zone;
-static void
-xlate_action_set(struct xlate_ctx *ctx)
-{
- uint64_t action_list_stub[1024 / 64];
- struct ofpbuf action_list;
+ /* Ensure that any prior actions are applied before composing the new
+ * conntrack action. */
+ xlate_commit_actions(ctx);
- ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub);
- ofpacts_execute_action_set(&action_list, &ctx->action_set);
- do_xlate_actions(ofpbuf_data(&action_list), ofpbuf_size(&action_list), ctx);
- ofpbuf_uninit(&action_list);
+ /* Process nested actions first, to populate the key. */
+ ctx->ct_nat_action = NULL;
+ do_xlate_actions(ofc->actions, ofpact_ct_get_action_len(ofc), ctx);
+
+ if (ofc->zone_src.field) {
+ zone = mf_get_subfield(&ofc->zone_src, &ctx->xin->flow);
+ } else {
+ zone = ofc->zone_imm;
+ }
+
+ ct_offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CT);
+ if (ofc->flags & NX_CT_F_COMMIT) {
+ nl_msg_put_flag(ctx->odp_actions, OVS_CT_ATTR_COMMIT);
+ }
+ nl_msg_put_u16(ctx->odp_actions, OVS_CT_ATTR_ZONE, zone);
+ put_ct_mark(&ctx->xin->flow, &ctx->base_flow, ctx->odp_actions, ctx->wc);
+ put_ct_label(&ctx->xin->flow, &ctx->base_flow, ctx->odp_actions, ctx->wc);
+ put_ct_helper(ctx->odp_actions, ofc);
+ put_ct_nat(ctx);
+ ctx->ct_nat_action = NULL;
+ nl_msg_end_nested(ctx->odp_actions, ct_offset);
+
+ /* Restore the original ct fields in the key. These should only be exposed
+ * after recirculation to another table. */
+ ctx->base_flow.ct_mark = old_ct_mark;
+ ctx->base_flow.ct_label = old_ct_label;
+
+ if (ofc->recirc_table == NX_CT_RECIRC_NONE) {
+ /* If we do not recirculate as part of this action, hide the results of
+ * connection tracking from subsequent recirculations. */
+ ctx->conntracked = false;
+ } else {
+ /* Use ct_* fields from datapath during recirculation upcall. */
+ ctx->conntracked = true;
+ compose_recirculate_and_fork(ctx, ofc->recirc_table);
+ }
}
static void
do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len,
struct xlate_ctx *ctx)
{
- struct flow_wildcards *wc = &ctx->xout->wc;
+ struct flow_wildcards *wc = ctx->wc;
struct flow *flow = &ctx->xin->flow;
const struct ofpact *a;
+ if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) {
+ tnl_neigh_snoop(flow, wc, ctx->xbridge->name);
+ }
/* dl_type already in the mask, not set below. */
OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
const struct ofpact_set_field *set_field;
const struct mf_field *mf;
+ if (ctx->error) {
+ break;
+ }
+
if (ctx->exit) {
+ /* Check if need to store the remaining actions for later
+ * execution. */
+ if (ctx->freezing) {
+ freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len),
+ ctx);
+ }
break;
}
case OFPACT_GROUP:
if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) {
+ /* Group could not be found. */
return;
}
break;
case OFPACT_CONTROLLER:
controller = ofpact_get_CONTROLLER(a);
- execute_controller_action(ctx, controller->max_len,
- controller->reason,
- controller->controller_id);
+ if (controller->pause) {
+ ctx->pause = controller;
+ ctx->xout->slow |= SLOW_CONTROLLER;
+ ctx_trigger_freeze(ctx);
+ a = ofpact_next(a);
+ } else {
+ execute_controller_action(ctx, controller->max_len,
+ controller->reason,
+ controller->controller_id,
+ controller->userdata,
+ controller->userdata_len);
+ }
break;
case OFPACT_ENQUEUE:
+ memset(&wc->masks.skb_priority, 0xff,
+ sizeof wc->masks.skb_priority);
xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a));
break;
break;
case OFPACT_SET_ETH_SRC:
- memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src);
- memcpy(flow->dl_src, ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
+ WC_MASK_FIELD(wc, dl_src);
+ flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac;
break;
case OFPACT_SET_ETH_DST:
- memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
- memcpy(flow->dl_dst, ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
+ WC_MASK_FIELD(wc, dl_dst);
+ flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac;
break;
case OFPACT_SET_IPV4_SRC:
+ CHECK_MPLS_RECIRCULATION();
if (flow->dl_type == htons(ETH_TYPE_IP)) {
memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src);
flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4;
break;
case OFPACT_SET_IPV4_DST:
+ CHECK_MPLS_RECIRCULATION();
if (flow->dl_type == htons(ETH_TYPE_IP)) {
memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst);
flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4;
break;
case OFPACT_SET_IP_DSCP:
+ CHECK_MPLS_RECIRCULATION();
if (is_ip_any(flow)) {
wc->masks.nw_tos |= IP_DSCP_MASK;
flow->nw_tos &= ~IP_DSCP_MASK;
break;
case OFPACT_SET_IP_ECN:
+ CHECK_MPLS_RECIRCULATION();
if (is_ip_any(flow)) {
wc->masks.nw_tos |= IP_ECN_MASK;
flow->nw_tos &= ~IP_ECN_MASK;
break;
case OFPACT_SET_IP_TTL:
+ CHECK_MPLS_RECIRCULATION();
if (is_ip_any(flow)) {
wc->masks.nw_ttl = 0xff;
flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl;
break;
case OFPACT_SET_L4_SRC_PORT:
- if (is_ip_any(flow)) {
+ CHECK_MPLS_RECIRCULATION();
+ if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src);
flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
break;
case OFPACT_SET_L4_DST_PORT:
- if (is_ip_any(flow)) {
+ CHECK_MPLS_RECIRCULATION();
+ if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) {
memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst);
flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
break;
case OFPACT_RESUBMIT:
+ /* Freezing complicates resubmit. There are two cases:
+ *
+ * - If mpls_pop has been executed, then the flow table lookup
+ * as part of resubmit might depend on fields that can only
+ * be obtained via recirculation, so the resubmit itself
+ * triggers recirculation and we need to make sure that the
+ * resubmit is executed again after recirculation.
+ * Therefore, in this case we trigger recirculation and let
+ * the code following this "switch" append the resubmit to
+ * the post-recirculation actions.
+ *
+ * - Otherwise, some action in the flow entry found by resubmit
+ * might trigger freezing. If that happens, then we do not
+ * want to execute the resubmit again during thawing, so we
+ * want to skip back to the head of the loop to avoid that,
+ * only adding any actions that follow the resubmit to the
+ * frozen actions.
+ */
+ if (ctx->was_mpls) {
+ ctx_trigger_freeze(ctx);
+ break;
+ }
xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a));
- break;
+ continue;
case OFPACT_SET_TUNNEL:
flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id);
break;
case OFPACT_SET_QUEUE:
+ memset(&wc->masks.skb_priority, 0xff,
+ sizeof wc->masks.skb_priority);
xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id);
break;
case OFPACT_POP_QUEUE:
+ memset(&wc->masks.skb_priority, 0xff,
+ sizeof wc->masks.skb_priority);
flow->skb_priority = ctx->orig_skb_priority;
break;
case OFPACT_REG_MOVE:
+ CHECK_MPLS_RECIRCULATION_IF(
+ mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->dst.field) ||
+ mf_is_l3_or_higher(ofpact_get_REG_MOVE(a)->src.field));
nxm_execute_reg_move(ofpact_get_REG_MOVE(a), flow, wc);
break;
- case OFPACT_REG_LOAD:
- nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc);
- break;
-
case OFPACT_SET_FIELD:
+ CHECK_MPLS_RECIRCULATION_IF(
+ mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field));
set_field = ofpact_get_SET_FIELD(a);
mf = set_field->field;
&& !eth_type_mpls(flow->dl_type)) {
break;
}
-
- mf_mask_field_and_prereqs(mf, &wc->masks);
- mf_set_flow_value(mf, &set_field->value, flow);
+ /* A flow may wildcard nw_frag. Do nothing if setting a transport
+ * header field on a packet that does not have them. */
+ mf_mask_field_and_prereqs(mf, wc);
+ if (mf_are_prereqs_ok(mf, flow)) {
+ mf_set_flow_value_masked(mf, &set_field->value,
+ &set_field->mask, flow);
+ }
break;
case OFPACT_STACK_PUSH:
+ CHECK_MPLS_RECIRCULATION_IF(
+ mf_is_l3_or_higher(ofpact_get_STACK_PUSH(a)->subfield.field));
nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc,
&ctx->stack);
break;
case OFPACT_STACK_POP:
+ CHECK_MPLS_RECIRCULATION_IF(
+ mf_is_l3_or_higher(ofpact_get_STACK_POP(a)->subfield.field));
nxm_execute_stack_pop(ofpact_get_STACK_POP(a), flow, wc,
&ctx->stack);
break;
case OFPACT_PUSH_MPLS:
+ /* Recirculate if it is an IP packet with a zero ttl. This may
+ * indicate that the packet was previously MPLS and an MPLS pop
+ * action converted it to IP. In this case recirculating should
+ * reveal the IP TTL which is used as the basis for a new MPLS
+ * LSE. */
+ CHECK_MPLS_RECIRCULATION_IF(
+ !flow_count_mpls_labels(flow, wc)
+ && flow->nw_ttl == 0
+ && is_ip_any(flow));
compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a));
break;
case OFPACT_POP_MPLS:
+ CHECK_MPLS_RECIRCULATION();
compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype);
break;
case OFPACT_SET_MPLS_LABEL:
+ CHECK_MPLS_RECIRCULATION();
compose_set_mpls_label_action(
ctx, ofpact_get_SET_MPLS_LABEL(a)->label);
- break;
+ break;
case OFPACT_SET_MPLS_TC:
+ CHECK_MPLS_RECIRCULATION();
compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc);
break;
case OFPACT_SET_MPLS_TTL:
+ CHECK_MPLS_RECIRCULATION();
compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl);
break;
case OFPACT_DEC_MPLS_TTL:
+ CHECK_MPLS_RECIRCULATION();
if (compose_dec_mpls_ttl_action(ctx)) {
return;
}
break;
case OFPACT_DEC_TTL:
+ CHECK_MPLS_RECIRCULATION();
wc->masks.nw_ttl = 0xff;
if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) {
return;
break;
case OFPACT_MULTIPATH:
+ CHECK_MPLS_RECIRCULATION();
multipath_execute(ofpact_get_MULTIPATH(a), flow, wc);
break;
case OFPACT_BUNDLE:
+ CHECK_MPLS_RECIRCULATION();
xlate_bundle_action(ctx, ofpact_get_BUNDLE(a));
break;
break;
case OFPACT_LEARN:
+ CHECK_MPLS_RECIRCULATION();
xlate_learn_action(ctx, ofpact_get_LEARN(a));
break;
+ case OFPACT_CONJUNCTION: {
+ /* A flow with a "conjunction" action represents part of a special
+ * kind of "set membership match". Such a flow should not actually
+ * get executed, but it could via, say, a "packet-out", even though
+ * that wouldn't be useful. Log it to help debugging. */
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_INFO_RL(&rl, "executing no-op conjunction action");
+ break;
+ }
+
case OFPACT_EXIT:
ctx->exit = true;
break;
+ case OFPACT_UNROLL_XLATE: {
+ struct ofpact_unroll_xlate *unroll = ofpact_get_UNROLL_XLATE(a);
+
+ /* Restore translation context data that was stored earlier. */
+ ctx->table_id = unroll->rule_table_id;
+ ctx->rule_cookie = unroll->rule_cookie;
+ break;
+ }
case OFPACT_FIN_TIMEOUT:
+ CHECK_MPLS_RECIRCULATION();
memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto);
- ctx->xout->has_fin_timeout = true;
xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a));
break;
case OFPACT_CLEAR_ACTIONS:
ofpbuf_clear(&ctx->action_set);
+ ctx->xin->flow.actset_output = OFPP_UNSET;
+ ctx->action_set_has_group = false;
break;
case OFPACT_WRITE_ACTIONS:
- xlate_write_actions(ctx, a);
+ xlate_write_actions(ctx, ofpact_get_WRITE_ACTIONS(a));
break;
case OFPACT_WRITE_METADATA:
struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a);
ovs_assert(ctx->table_id < ogt->table_id);
+
xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port,
ogt->table_id, true, true);
break;
case OFPACT_SAMPLE:
xlate_sample_action(ctx, ofpact_get_SAMPLE(a));
break;
+
+ case OFPACT_CT:
+ CHECK_MPLS_RECIRCULATION();
+ compose_conntrack_action(ctx, ofpact_get_CT(a));
+ break;
+
+ case OFPACT_NAT:
+ /* This will be processed by compose_conntrack_action(). */
+ ctx->ct_nat_action = ofpact_get_NAT(a);
+ break;
+
+ case OFPACT_DEBUG_RECIRC:
+ ctx_trigger_freeze(ctx);
+ a = ofpact_next(a);
+ break;
+ }
+
+ /* Check if need to store this and the remaining actions for later
+ * execution. */
+ if (!ctx->error && ctx->exit && ctx_first_frozen_action(ctx)) {
+ freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), ctx);
+ break;
}
}
}
void
xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto,
- const struct flow *flow, struct rule_dpif *rule,
- uint16_t tcp_flags, const struct ofpbuf *packet)
+ const struct flow *flow, ofp_port_t in_port,
+ struct rule_dpif *rule, uint16_t tcp_flags,
+ const struct dp_packet *packet, struct flow_wildcards *wc,
+ struct ofpbuf *odp_actions)
{
xin->ofproto = ofproto;
xin->flow = *flow;
+ xin->flow.in_port.ofp_port = in_port;
+ xin->flow.actset_output = OFPP_UNSET;
xin->packet = packet;
xin->may_learn = packet != NULL;
xin->rule = rule;
xin->resubmit_hook = NULL;
xin->report_hook = NULL;
xin->resubmit_stats = NULL;
- xin->skip_wildcards = false;
+ xin->recurse = 0;
+ xin->resubmits = 0;
+ xin->wc = wc;
+ xin->odp_actions = odp_actions;
+
+ /* Do recirc lookup. */
+ xin->frozen_state = NULL;
+ if (flow->recirc_id) {
+ const struct recirc_id_node *node
+ = recirc_id_node_find(flow->recirc_id);
+ if (node) {
+ xin->frozen_state = &node->state;
+ }
+ }
}
void
xlate_out_uninit(struct xlate_out *xout)
{
if (xout) {
- ofpbuf_uninit(&xout->odp_actions);
+ recirc_refs_unref(&xout->recircs);
}
}
xlate_actions_for_side_effects(struct xlate_in *xin)
{
struct xlate_out xout;
+ enum xlate_error error;
- xlate_actions(xin, &xout);
- xlate_out_uninit(&xout);
-}
+ error = xlate_actions(xin, &xout);
+ if (error) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-static void
-xlate_report(struct xlate_ctx *ctx, const char *s)
-{
- if (ctx->xin->report_hook) {
- ctx->xin->report_hook(ctx->xin, s, ctx->recurse);
+ VLOG_WARN_RL(&rl, "xlate_actions failed (%s)!", xlate_strerror(error));
}
-}
-
-void
-xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src)
-{
- dst->wc = src->wc;
- dst->slow = src->slow;
- dst->has_learn = src->has_learn;
- dst->has_normal = src->has_normal;
- dst->has_fin_timeout = src->has_fin_timeout;
- dst->nf_output_iface = src->nf_output_iface;
- dst->mirrors = src->mirrors;
- ofpbuf_use_stub(&dst->odp_actions, dst->odp_actions_stub,
- sizeof dst->odp_actions_stub);
- ofpbuf_put(&dst->odp_actions, ofpbuf_data(&src->odp_actions),
- ofpbuf_size(&src->odp_actions));
+ xlate_out_uninit(&xout);
}
\f
static struct skb_priority_to_dscp *
return pdscp != NULL;
}
+static size_t
+count_skb_priorities(const struct xport *xport)
+{
+ return hmap_count(&xport->skb_priorities);
+}
+
static void
clear_skb_priorities(struct xport *xport)
{
const struct nlattr *a;
unsigned int left;
- NL_ATTR_FOR_EACH_UNSAFE (a, left, ofpbuf_data(&ctx->xout->odp_actions),
- ofpbuf_size(&ctx->xout->odp_actions)) {
+ NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data,
+ ctx->odp_actions->size) {
if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT
&& nl_attr_get_odp_port(a) == local_odp_port) {
return true;
return false;
}
-/* Thread safe call to xlate_actions__(). */
-void
-xlate_actions(struct xlate_in *xin, struct xlate_out *xout)
- OVS_EXCLUDED(xlate_rwlock)
+#if defined(__linux__)
+/* Returns the maximum number of packets that the Linux kernel is willing to
+ * queue up internally to certain kinds of software-implemented ports, or the
+ * default (and rarely modified) value if it cannot be determined. */
+static int
+netdev_max_backlog(void)
{
- ovs_rwlock_rdlock(&xlate_rwlock);
- xlate_actions__(xin, xout);
- ovs_rwlock_unlock(&xlate_rwlock);
+ static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
+ static int max_backlog = 1000; /* The normal default value. */
+
+ if (ovsthread_once_start(&once)) {
+ static const char filename[] = "/proc/sys/net/core/netdev_max_backlog";
+ FILE *stream;
+ int n;
+
+ stream = fopen(filename, "r");
+ if (!stream) {
+ VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno));
+ } else {
+ if (fscanf(stream, "%d", &n) != 1) {
+ VLOG_WARN("%s: read error", filename);
+ } else if (n <= 100) {
+ VLOG_WARN("%s: unexpectedly small value %d", filename, n);
+ } else {
+ max_backlog = n;
+ }
+ fclose(stream);
+ }
+ ovsthread_once_done(&once);
+
+ VLOG_DBG("%s: using %d max_backlog", filename, max_backlog);
+ }
+
+ return max_backlog;
+}
+
+/* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in
+ * 'odp_actions'. */
+static int
+count_output_actions(const struct ofpbuf *odp_actions)
+{
+ const struct nlattr *a;
+ size_t left;
+ int n = 0;
+
+ NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) {
+ if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) {
+ n++;
+ }
+ }
+ return n;
+}
+#endif /* defined(__linux__) */
+
+/* Returns true if 'odp_actions' contains more output actions than the datapath
+ * can reliably handle in one go. On Linux, this is the value of the
+ * net.core.netdev_max_backlog sysctl, which limits the maximum number of
+ * packets that the kernel is willing to queue up for processing while the
+ * datapath is processing a set of actions. */
+static bool
+too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED)
+{
+#ifdef __linux__
+ return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog()
+ && count_output_actions(odp_actions) > netdev_max_backlog());
+#else
+ /* OSes other than Linux might have similar limits, but we don't know how
+ * to determine them.*/
+ return false;
+#endif
}
-/* Translates the 'ofpacts_len' bytes of "struct ofpacts" starting at 'ofpacts'
- * into datapath actions in 'odp_actions', using 'ctx'.
- *
- * The caller must take responsibility for eventually freeing 'xout', with
- * xlate_out_uninit(). */
static void
-xlate_actions__(struct xlate_in *xin, struct xlate_out *xout)
- OVS_REQ_RDLOCK(xlate_rwlock)
+xlate_wc_init(struct xlate_ctx *ctx)
{
- struct flow_wildcards *wc = &xout->wc;
- struct flow *flow = &xin->flow;
- struct rule_dpif *rule = NULL;
+ flow_wildcards_init_catchall(ctx->wc);
- const struct rule_actions *actions = NULL;
- enum slow_path_reason special;
- const struct ofpact *ofpacts;
- struct xport *in_port;
- struct flow orig_flow;
- struct xlate_ctx ctx;
- size_t ofpacts_len;
- bool tnl_may_send;
- bool is_icmp;
+ /* Some fields we consider to always be examined. */
+ WC_MASK_FIELD(ctx->wc, in_port);
+ WC_MASK_FIELD(ctx->wc, dl_type);
+ if (is_ip_any(&ctx->xin->flow)) {
+ WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK);
+ }
- COVERAGE_INC(xlate_actions);
+ if (ctx->xbridge->support.odp.recirc) {
+ /* Always exactly match recirc_id when datapath supports
+ * recirculation. */
+ WC_MASK_FIELD(ctx->wc, recirc_id);
+ }
- /* Flow initialization rules:
- * - 'base_flow' must match the kernel's view of the packet at the
- * time that action processing starts. 'flow' represents any
- * transformations we wish to make through actions.
- * - By default 'base_flow' and 'flow' are the same since the input
- * packet matches the output before any actions are applied.
- * - When using VLAN splinters, 'base_flow''s VLAN is set to the value
- * of the received packet as seen by the kernel. If we later output
- * to another device without any modifications this will cause us to
- * insert a new tag since the original one was stripped off by the
- * VLAN device.
- * - Tunnel metadata as received is retained in 'flow'. This allows
- * tunnel metadata matching also in later tables.
- * Since a kernel action for setting the tunnel metadata will only be
- * generated with actual tunnel output, changing the tunnel metadata
- * values in 'flow' (such as tun_id) will only have effect with a later
- * tunnel output action.
- * - Tunnel 'base_flow' is completely cleared since that is what the
- * kernel does. If we wish to maintain the original values an action
- * needs to be generated. */
-
- ctx.xin = xin;
- ctx.xout = xout;
- ctx.xout->slow = 0;
- ctx.xout->has_learn = false;
- ctx.xout->has_normal = false;
- ctx.xout->has_fin_timeout = false;
- ctx.xout->nf_output_iface = NF_OUT_DROP;
- ctx.xout->mirrors = 0;
- ofpbuf_use_stub(&ctx.xout->odp_actions, ctx.xout->odp_actions_stub,
- sizeof ctx.xout->odp_actions_stub);
- ofpbuf_reserve(&ctx.xout->odp_actions, NL_A_U32_SIZE);
-
- ctx.xbridge = xbridge_lookup(xin->ofproto);
- if (!ctx.xbridge) {
- return;
+ if (ctx->xbridge->netflow) {
+ netflow_mask_wc(&ctx->xin->flow, ctx->wc);
}
- ctx.rule = xin->rule;
+ tnl_wc_init(&ctx->xin->flow, ctx->wc);
+}
- ctx.base_flow = *flow;
- memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel);
- ctx.orig_tunnel_ip_dst = flow->tunnel.ip_dst;
+static void
+xlate_wc_finish(struct xlate_ctx *ctx)
+{
+ /* Clear the metadata and register wildcard masks, because we won't
+ * use non-header fields as part of the cache. */
+ flow_wildcards_clear_non_packet_fields(ctx->wc);
+
+ /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow
+ * uses the low 8 bits of the 16-bit tp_src and tp_dst members to
+ * represent these fields. The datapath interface, on the other hand,
+ * represents them with just 8 bits each. This means that if the high
+ * 8 bits of the masks for these fields somehow become set, then they
+ * will get chopped off by a round trip through the datapath, and
+ * revalidation will spot that as an inconsistency and delete the flow.
+ * Avoid the problem here by making sure that only the low 8 bits of
+ * either field can be unwildcarded for ICMP.
+ */
+ if (is_icmpv4(&ctx->xin->flow) || is_icmpv6(&ctx->xin->flow)) {
+ ctx->wc->masks.tp_src &= htons(UINT8_MAX);
+ ctx->wc->masks.tp_dst &= htons(UINT8_MAX);
+ }
+ /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */
+ if (ctx->wc->masks.vlan_tci) {
+ ctx->wc->masks.vlan_tci |= htons(VLAN_CFI);
+ }
+}
+
+/* Translates the flow, actions, or rule in 'xin' into datapath actions in
+ * 'xout'.
+ * The caller must take responsibility for eventually freeing 'xout', with
+ * xlate_out_uninit().
+ * Returns 'XLATE_OK' if translation was successful. In case of an error an
+ * empty set of actions will be returned in 'xin->odp_actions' (if non-NULL),
+ * so that most callers may ignore the return value and transparently install a
+ * drop flow when the translation fails. */
+enum xlate_error
+xlate_actions(struct xlate_in *xin, struct xlate_out *xout)
+{
+ *xout = (struct xlate_out) {
+ .slow = 0,
+ .recircs = RECIRC_REFS_EMPTY_INITIALIZER,
+ };
- flow_wildcards_init_catchall(wc);
- memset(&wc->masks.in_port, 0xff, sizeof wc->masks.in_port);
- memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority);
- memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
- if (is_ip_any(flow)) {
- wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto);
+ if (!xbridge) {
+ return XLATE_BRIDGE_NOT_FOUND;
+ }
+
+ struct flow *flow = &xin->flow;
+
+ union mf_subvalue stack_stub[1024 / sizeof(union mf_subvalue)];
+ uint64_t action_set_stub[1024 / 8];
+ uint64_t frozen_actions_stub[1024 / 8];
+ struct flow_wildcards scratch_wc;
+ uint64_t actions_stub[256 / 8];
+ struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub);
+ struct xlate_ctx ctx = {
+ .xin = xin,
+ .xout = xout,
+ .base_flow = *flow,
+ .orig_tunnel_ipv6_dst = flow_tnl_dst(&flow->tunnel),
+ .xbridge = xbridge,
+ .stack = OFPBUF_STUB_INITIALIZER(stack_stub),
+ .rule = xin->rule,
+ .wc = xin->wc ? xin->wc : &scratch_wc,
+ .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions,
+
+ .recurse = xin->recurse,
+ .resubmits = xin->resubmits,
+ .in_group = false,
+ .in_action_set = false,
+
+ .table_id = 0,
+ .rule_cookie = OVS_BE64_MAX,
+ .orig_skb_priority = flow->skb_priority,
+ .sflow_n_outputs = 0,
+ .sflow_odp_port = 0,
+ .nf_output_iface = NF_OUT_DROP,
+ .exit = false,
+ .error = XLATE_OK,
+ .mirrors = 0,
+
+ .freezing = false,
+ .frozen_actions = OFPBUF_STUB_INITIALIZER(frozen_actions_stub),
+ .pause = NULL,
+
+ .was_mpls = false,
+ .conntracked = false,
+
+ .ct_nat_action = NULL,
+
+ .action_set_has_group = false,
+ .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub),
+ };
+
+ /* 'base_flow' reflects the packet as it came in, but we need it to reflect
+ * the packet as the datapath will treat it for output actions:
+ *
+ * - Our datapath doesn't retain tunneling information without us
+ * re-setting it, so clear the tunnel data.
+ *
+ * - For VLAN splinters, a higher layer may pretend that the packet
+ * came in on 'flow->in_port.ofp_port' with 'flow->vlan_tci'
+ * attached, because that's how we want to treat it from an OpenFlow
+ * perspective. But from the datapath's perspective it actually came
+ * in on a VLAN device without any VLAN attached. So here we put the
+ * datapath's view of the VLAN information in 'base_flow' to ensure
+ * correct treatment.
+ */
+ memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel);
+ if (flow->in_port.ofp_port
+ != vsp_realdev_to_vlandev(xbridge->ofproto,
+ flow->in_port.ofp_port,
+ flow->vlan_tci)) {
+ ctx.base_flow.vlan_tci = 0;
}
- is_icmp = is_icmpv4(flow) || is_icmpv6(flow);
- tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc);
- if (ctx.xbridge->netflow) {
- netflow_mask_wc(flow, wc);
+ ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE);
+ if (xin->wc) {
+ xlate_wc_init(&ctx);
}
- ctx.recurse = 0;
- ctx.resubmits = 0;
- ctx.in_group = false;
- ctx.orig_skb_priority = flow->skb_priority;
- ctx.table_id = 0;
- ctx.exit = false;
+ COVERAGE_INC(xlate_actions);
- if (!xin->ofpacts && !ctx.rule) {
- ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow,
- !xin->skip_wildcards ? wc : NULL,
- &rule, ctx.xin->xcache != NULL);
- if (ctx.xin->resubmit_stats) {
- rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats);
+ if (xin->frozen_state) {
+ const struct frozen_state *state = xin->frozen_state;
+
+ xlate_report(&ctx, "Thawing frozen state:");
+
+ if (xin->ofpacts_len > 0 || ctx.rule) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ const char *conflict = xin->ofpacts_len ? "actions" : "rule";
+
+ VLOG_WARN_RL(&rl, "Recirculation conflict (%s)!", conflict);
+ xlate_report(&ctx, "- Recirculation conflict (%s)!", conflict);
+ ctx.error = XLATE_RECIRCULATION_CONFLICT;
+ goto exit;
}
- if (ctx.xin->xcache) {
- struct xc_entry *entry;
- entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE);
- entry->u.rule = rule;
+ /* Set the bridge for post-recirculation processing if needed. */
+ if (!uuid_equals(ofproto_dpif_get_uuid(ctx.xbridge->ofproto),
+ &state->ofproto_uuid)) {
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
+ const struct xbridge *new_bridge
+ = xbridge_lookup_by_uuid(xcfg, &state->ofproto_uuid);
+
+ if (OVS_UNLIKELY(!new_bridge)) {
+ /* Drop the packet if the bridge cannot be found. */
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+ VLOG_WARN_RL(&rl, "Frozen bridge no longer exists.");
+ xlate_report(&ctx, "- Frozen bridge no longer exists.");
+ ctx.error = XLATE_BRIDGE_NOT_FOUND;
+ goto exit;
+ }
+ ctx.xbridge = new_bridge;
}
- ctx.rule = rule;
- }
- xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule);
- xout->use_recirc = false;
- if (xin->ofpacts) {
- ofpacts = xin->ofpacts;
- ofpacts_len = xin->ofpacts_len;
- } else if (ctx.rule) {
- actions = rule_dpif_get_actions(ctx.rule);
- ofpacts = actions->ofpacts;
- ofpacts_len = actions->ofpacts_len;
- } else {
- OVS_NOT_REACHED();
- }
+ /* Set the thawed table id. Note: A table lookup is done only if there
+ * are no frozen actions. */
+ ctx.table_id = state->table_id;
+ xlate_report(&ctx, "- Resuming from table %"PRIu8, ctx.table_id);
- ofpbuf_use_stub(&ctx.stack, ctx.init_stack, sizeof ctx.init_stack);
- ofpbuf_use_stub(&ctx.action_set,
- ctx.action_set_stub, sizeof ctx.action_set_stub);
+ if (!state->conntracked) {
+ clear_conntrack(flow);
+ }
- if (mbridge_has_mirrors(ctx.xbridge->mbridge)) {
- /* Do this conditionally because the copy is expensive enough that it
- * shows up in profiles. */
- orig_flow = *flow;
- }
+ /* Restore pipeline metadata. May change flow's in_port and other
+ * metadata to the values that existed when freezing was triggered. */
+ frozen_metadata_to_flow(&state->metadata, flow);
- if (flow->nw_frag & FLOW_NW_FRAG_ANY) {
- switch (ctx.xbridge->frag) {
- case OFPC_FRAG_NORMAL:
- /* We must pretend that transport ports are unavailable. */
- flow->tp_src = ctx.base_flow.tp_src = htons(0);
- flow->tp_dst = ctx.base_flow.tp_dst = htons(0);
- break;
+ /* Restore stack, if any. */
+ if (state->stack) {
+ ofpbuf_put(&ctx.stack, state->stack,
+ state->n_stack * sizeof *state->stack);
+ }
- case OFPC_FRAG_DROP:
- return;
+ /* Restore mirror state. */
+ ctx.mirrors = state->mirrors;
- case OFPC_FRAG_REASM:
- OVS_NOT_REACHED();
+ /* Restore action set, if any. */
+ if (state->action_set_len) {
+ xlate_report_actions(&ctx, "- Restoring action set",
+ state->action_set, state->action_set_len);
- case OFPC_FRAG_NX_MATCH:
- /* Nothing to do. */
- break;
+ flow->actset_output = OFPP_UNSET;
+ xlate_write_actions__(&ctx, state->action_set,
+ state->action_set_len);
+ }
- case OFPC_INVALID_TTL_TO_CONTROLLER:
- OVS_NOT_REACHED();
+ /* Restore frozen actions. If there are no actions, processing will
+ * start with a lookup in the table set above. */
+ xin->ofpacts = state->ofpacts;
+ xin->ofpacts_len = state->ofpacts_len;
+ if (state->ofpacts_len) {
+ xlate_report_actions(&ctx, "- Restoring actions",
+ xin->ofpacts, xin->ofpacts_len);
+ }
+ } else if (OVS_UNLIKELY(flow->recirc_id)) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
+
+ VLOG_WARN_RL(&rl, "Recirculation context not found for ID %"PRIx32,
+ flow->recirc_id);
+ ctx.error = XLATE_NO_RECIRCULATION_CONTEXT;
+ goto exit;
+ }
+ /* The bridge is now known so obtain its table version. */
+ ctx.tables_version = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto);
+
+ if (!xin->ofpacts && !ctx.rule) {
+ ctx.rule = rule_dpif_lookup_from_table(
+ ctx.xbridge->ofproto, ctx.tables_version, flow, xin->wc,
+ ctx.xin->resubmit_stats, &ctx.table_id,
+ flow->in_port.ofp_port, true, true);
+ if (ctx.xin->resubmit_stats) {
+ rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats);
+ }
+ if (ctx.xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE);
+ entry->u.rule = ctx.rule;
+ rule_dpif_ref(ctx.rule);
+ }
+
+ if (OVS_UNLIKELY(ctx.xin->resubmit_hook)) {
+ ctx.xin->resubmit_hook(ctx.xin, ctx.rule, 0);
}
}
- in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port);
- if (in_port && in_port->is_tunnel) {
+ /* Get the proximate input port of the packet. (If xin->frozen_state,
+ * flow->in_port is the ultimate input port of the packet.) */
+ struct xport *in_port = get_ofp_port(xbridge,
+ ctx.base_flow.in_port.ofp_port);
+
+ /* Tunnel stats only for not-thawed packets. */
+ if (!xin->frozen_state && in_port && in_port->is_tunnel) {
if (ctx.xin->resubmit_stats) {
netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats);
if (in_port->bfd) {
}
}
- special = process_special(&ctx, flow, in_port, ctx.xin->packet);
- if (special) {
- ctx.xout->slow |= special;
+ if (!xin->frozen_state && process_special(&ctx, in_port)) {
+ /* process_special() did all the processing for this packet.
+ *
+ * We do not perform special processing on thawed packets, since that
+ * was done before they were frozen and should not be redone. */
+ } else if (in_port && in_port->xbundle
+ && xbundle_mirror_out(xbridge, in_port->xbundle)) {
+ if (ctx.xin->packet != NULL) {
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+ VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
+ "%s, which is reserved exclusively for mirroring",
+ ctx.xbridge->name, in_port->xbundle->name);
+ }
} else {
- size_t sample_actions_len;
-
- if (flow->in_port.ofp_port
- != vsp_realdev_to_vlandev(ctx.xbridge->ofproto,
- flow->in_port.ofp_port,
- flow->vlan_tci)) {
- ctx.base_flow.vlan_tci = 0;
+ /* Sampling is done on initial reception; don't redo after thawing. */
+ unsigned int user_cookie_offset = 0;
+ if (!xin->frozen_state) {
+ user_cookie_offset = compose_sflow_action(&ctx);
+ compose_ipfix_action(&ctx, ODPP_NONE);
}
+ size_t sample_actions_len = ctx.odp_actions->size;
+
+ if (tnl_process_ecn(flow)
+ && (!in_port || may_receive(in_port, &ctx))) {
+ const struct ofpact *ofpacts;
+ size_t ofpacts_len;
+
+ if (xin->ofpacts) {
+ ofpacts = xin->ofpacts;
+ ofpacts_len = xin->ofpacts_len;
+ } else if (ctx.rule) {
+ const struct rule_actions *actions
+ = rule_dpif_get_actions(ctx.rule);
+ ofpacts = actions->ofpacts;
+ ofpacts_len = actions->ofpacts_len;
+ ctx.rule_cookie = rule_dpif_get_flow_cookie(ctx.rule);
+ } else {
+ OVS_NOT_REACHED();
+ }
- add_sflow_action(&ctx);
- add_ipfix_action(&ctx);
- sample_actions_len = ofpbuf_size(&ctx.xout->odp_actions);
-
- if (tnl_may_send && (!in_port || may_receive(in_port, &ctx))) {
+ mirror_ingress_packet(&ctx);
do_xlate_actions(ofpacts, ofpacts_len, &ctx);
+ if (ctx.error) {
+ goto exit;
+ }
/* We've let OFPP_NORMAL and the learning action look at the
- * packet, so drop it now if forwarding is disabled. */
- if (in_port && !xport_stp_forward_state(in_port)) {
- ofpbuf_set_size(&ctx.xout->odp_actions, sample_actions_len);
+ * packet, so cancel all actions and freezing if forwarding is
+ * disabled. */
+ if (in_port && (!xport_stp_forward_state(in_port) ||
+ !xport_rstp_forward_state(in_port))) {
+ ctx.odp_actions->size = sample_actions_len;
+ ctx_cancel_freeze(&ctx);
+ ofpbuf_clear(&ctx.action_set);
}
- }
- if (ofpbuf_size(&ctx.action_set)) {
- xlate_action_set(&ctx);
+ if (!ctx.freezing) {
+ xlate_action_set(&ctx);
+ }
+ if (ctx.freezing) {
+ finish_freezing(&ctx);
+ }
}
- if (ctx.xbridge->has_in_band
+ /* Output only fully processed packets. */
+ if (!ctx.freezing
+ && xbridge->has_in_band
&& in_band_must_output_to_local_port(flow)
&& !actions_output_to_local_port(&ctx)) {
- compose_output_action(&ctx, OFPP_LOCAL);
+ compose_output_action(&ctx, OFPP_LOCAL, NULL);
}
- fix_sflow_action(&ctx);
-
- if (mbridge_has_mirrors(ctx.xbridge->mbridge)) {
- add_mirror_actions(&ctx, &orig_flow);
+ if (user_cookie_offset) {
+ fix_sflow_action(&ctx, user_cookie_offset);
}
}
- if (nl_attr_oversized(ofpbuf_size(&ctx.xout->odp_actions))) {
+ if (nl_attr_oversized(ctx.odp_actions->size)) {
/* These datapath actions are too big for a Netlink attribute, so we
* can't hand them to the kernel directly. dpif_execute() can execute
* them one by one with help, so just mark the result as SLOW_ACTION to
* prevent the flow from being installed. */
COVERAGE_INC(xlate_actions_oversize);
ctx.xout->slow |= SLOW_ACTION;
+ } else if (too_many_output_actions(ctx.odp_actions)) {
+ COVERAGE_INC(xlate_actions_too_many_output);
+ ctx.xout->slow |= SLOW_ACTION;
}
- if (mbridge_has_mirrors(ctx.xbridge->mbridge)) {
+ /* Do netflow only for packets on initial reception, that are not sent to
+ * the controller. We consider packets sent to the controller to be part
+ * of the control plane rather than the data plane. */
+ if (!xin->frozen_state
+ && xbridge->netflow
+ && !(xout->slow & SLOW_CONTROLLER)) {
if (ctx.xin->resubmit_stats) {
- mirror_update_stats(ctx.xbridge->mbridge, xout->mirrors,
- ctx.xin->resubmit_stats->n_packets,
- ctx.xin->resubmit_stats->n_bytes);
+ netflow_flow_update(xbridge->netflow, flow,
+ ctx.nf_output_iface,
+ ctx.xin->resubmit_stats);
}
if (ctx.xin->xcache) {
struct xc_entry *entry;
- entry = xlate_cache_add_entry(ctx.xin->xcache, XC_MIRROR);
- entry->u.mirror.mbridge = mbridge_ref(ctx.xbridge->mbridge);
- entry->u.mirror.mirrors = xout->mirrors;
+ entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW);
+ entry->u.nf.netflow = netflow_ref(xbridge->netflow);
+ entry->u.nf.flow = xmemdup(flow, sizeof *flow);
+ entry->u.nf.iface = ctx.nf_output_iface;
}
}
- if (ctx.xbridge->netflow) {
- const struct ofpact *ofpacts = actions->ofpacts;
- size_t ofpacts_len = actions->ofpacts_len;
-
- /* Only update netflow if we don't have controller flow. We don't
- * report NetFlow expiration messages for such facets because they
- * are just part of the control logic for the network, not real
- * traffic. */
- if (ofpacts_len == 0
- || ofpacts->type != OFPACT_CONTROLLER
- || ofpact_next(ofpacts) < ofpact_end(ofpacts, ofpacts_len)) {
- if (ctx.xin->resubmit_stats) {
- netflow_flow_update(ctx.xbridge->netflow, flow,
- xout->nf_output_iface,
- ctx.xin->resubmit_stats);
- }
- if (ctx.xin->xcache) {
- struct xc_entry *entry;
-
- entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW);
- entry->u.nf.netflow = netflow_ref(ctx.xbridge->netflow);
- entry->u.nf.flow = xmemdup(flow, sizeof *flow);
- entry->u.nf.iface = xout->nf_output_iface;
- }
- }
+ if (xin->wc) {
+ xlate_wc_finish(&ctx);
}
+exit:
ofpbuf_uninit(&ctx.stack);
ofpbuf_uninit(&ctx.action_set);
-
- /* Clear the metadata and register wildcard masks, because we won't
- * use non-header fields as part of the cache. */
- flow_wildcards_clear_non_packet_fields(wc);
-
- /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow uses
- * the low 8 bits of the 16-bit tp_src and tp_dst members to represent
- * these fields. The datapath interface, on the other hand, represents
- * them with just 8 bits each. This means that if the high 8 bits of the
- * masks for these fields somehow become set, then they will get chopped
- * off by a round trip through the datapath, and revalidation will spot
- * that as an inconsistency and delete the flow. Avoid the problem here by
- * making sure that only the low 8 bits of either field can be unwildcarded
- * for ICMP.
- */
- if (is_icmp) {
- wc->masks.tp_src &= htons(UINT8_MAX);
- wc->masks.tp_dst &= htons(UINT8_MAX);
+ ofpbuf_uninit(&ctx.frozen_actions);
+ ofpbuf_uninit(&scratch_actions);
+
+ /* Make sure we return a "drop flow" in case of an error. */
+ if (ctx.error) {
+ xout->slow = 0;
+ if (xin->odp_actions) {
+ ofpbuf_clear(xin->odp_actions);
+ }
}
+ return ctx.error;
+}
+
+enum ofperr
+xlate_resume(struct ofproto_dpif *ofproto,
+ const struct ofputil_packet_in_private *pin,
+ struct ofpbuf *odp_actions,
+ enum slow_path_reason *slow)
+{
+ struct dp_packet packet;
+ dp_packet_use_const(&packet, pin->public.packet,
+ pin->public.packet_len);
+
+ struct flow flow;
+ flow_extract(&packet, &flow);
+
+ struct xlate_in xin;
+ xlate_in_init(&xin, ofproto, &flow, 0, NULL, ntohs(flow.tcp_flags),
+ &packet, NULL, odp_actions);
+
+ struct ofpact_note noop;
+ ofpact_init_NOTE(&noop);
+ noop.length = 0;
+
+ bool any_actions = pin->actions_len > 0;
+ struct frozen_state state = {
+ .table_id = 0, /* Not the table where NXAST_PAUSE was executed. */
+ .ofproto_uuid = pin->bridge,
+ .stack = pin->stack,
+ .n_stack = pin->n_stack,
+ .mirrors = pin->mirrors,
+ .conntracked = pin->conntracked,
+
+ /* When there are no actions, xlate_actions() will search the flow
+ * table. We don't want it to do that (we want it to resume), so
+ * supply a no-op action if there aren't any.
+ *
+ * (We can't necessarily avoid translating actions entirely if there
+ * aren't any actions, because there might be some finishing-up to do
+ * at the end of the pipeline, and we don't check for those
+ * conditions.) */
+ .ofpacts = any_actions ? pin->actions : &noop.ofpact,
+ .ofpacts_len = any_actions ? pin->actions_len : sizeof noop,
+
+ .action_set = pin->action_set,
+ .action_set_len = pin->action_set_len,
+ };
+ frozen_metadata_from_flow(&state.metadata,
+ &pin->public.flow_metadata.flow);
+ xin.frozen_state = &state;
+
+ struct xlate_out xout;
+ enum xlate_error error = xlate_actions(&xin, &xout);
+ *slow = xout.slow;
+ xlate_out_uninit(&xout);
+
+ /* xlate_actions() can generate a number of errors, but only
+ * XLATE_BRIDGE_NOT_FOUND really stands out to me as one that we should be
+ * sure to report over OpenFlow. The others could come up in packet-outs
+ * or regular flow translation and I don't think that it's going to be too
+ * useful to report them to the controller. */
+ return error == XLATE_BRIDGE_NOT_FOUND ? OFPERR_NXR_STALE : 0;
}
/* Sends 'packet' out 'ofport'.
* May modify 'packet'.
* Returns 0 if successful, otherwise a positive errno value. */
int
-xlate_send_packet(const struct ofport_dpif *ofport, struct ofpbuf *packet)
+xlate_send_packet(const struct ofport_dpif *ofport, struct dp_packet *packet)
{
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
struct xport *xport;
struct ofpact_output output;
struct flow flow;
ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output);
/* Use OFPP_NONE as the in_port to avoid special packet processing. */
- flow_extract(packet, NULL, &flow);
+ flow_extract(packet, &flow);
flow.in_port.ofp_port = OFPP_NONE;
- ovs_rwlock_rdlock(&xlate_rwlock);
- xport = xport_lookup(ofport);
+ xport = xport_lookup(xcfg, ofport);
if (!xport) {
- ovs_rwlock_unlock(&xlate_rwlock);
return EINVAL;
}
output.port = xport->ofp_port;
output.max_len = 0;
- ovs_rwlock_unlock(&xlate_rwlock);
return ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL,
&output.ofpact, sizeof output,
static void
xlate_cache_normal(struct ofproto_dpif *ofproto, struct flow *flow, int vlan)
{
+ struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
struct xbridge *xbridge;
struct xbundle *xbundle;
struct flow_wildcards wc;
- xbridge = xbridge_lookup(ofproto);
+ xbridge = xbridge_lookup(xcfg, ofproto);
if (!xbridge) {
return;
}
/* Push stats and perform side effects of flow translation. */
void
-xlate_push_stats(struct xlate_cache *xcache, bool may_learn,
+xlate_push_stats(struct xlate_cache *xcache,
const struct dpif_flow_stats *stats)
{
struct xc_entry *entry;
struct ofpbuf entries = xcache->entries;
+ struct eth_addr dmac;
+
+ if (!stats->n_packets) {
+ return;
+ }
XC_ENTRY_FOR_EACH (entry, entries, xcache) {
switch (entry->type) {
stats->n_packets, stats->n_bytes);
break;
case XC_LEARN:
- if (may_learn) {
- struct rule_dpif *rule = entry->u.learn.rule;
-
- /* Reset the modified time for a rule that is equivalent to
- * the currently cached rule. If the rule is not the exact
- * rule we have cached, update the reference that we have. */
- entry->u.learn.rule = ofproto_dpif_refresh_rule(rule);
- }
+ ofproto_dpif_flow_mod(entry->u.learn.ofproto, entry->u.learn.fm);
break;
case XC_NORMAL:
xlate_cache_normal(entry->u.normal.ofproto, entry->u.normal.flow,
xlate_fin_timeout__(entry->u.fin.rule, stats->tcp_flags,
entry->u.fin.idle, entry->u.fin.hard);
break;
+ case XC_GROUP:
+ group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket,
+ stats);
+ break;
+ case XC_TNL_NEIGH:
+ /* Lookup neighbor to avoid timeout. */
+ tnl_neigh_lookup(entry->u.tnl_neigh_cache.br_name,
+ &entry->u.tnl_neigh_cache.d_ipv6, &dmac);
+ break;
default:
OVS_NOT_REACHED();
}
static void
xlate_cache_clear_netflow(struct netflow *netflow, struct flow *flow)
{
- netflow_expire(netflow, flow);
netflow_flow_clear(netflow, flow);
netflow_unref(netflow);
free(flow);
mbridge_unref(entry->u.mirror.mbridge);
break;
case XC_LEARN:
- /* 'u.learn.rule' is the learned rule. */
- rule_dpif_unref(entry->u.learn.rule);
+ free(entry->u.learn.fm);
+ ofpbuf_delete(entry->u.learn.ofpacts);
break;
case XC_NORMAL:
free(entry->u.normal.flow);
/* 'u.fin.rule' is always already held as a XC_RULE, which
* has already released it's reference above. */
break;
+ case XC_GROUP:
+ group_dpif_unref(entry->u.group.group);
+ break;
+ case XC_TNL_NEIGH:
+ break;
default:
OVS_NOT_REACHED();
}
projects / cascardo / ovs.git / blobdiff