#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-arp-cache.h"
#include "bfd.h"
#include "bitmap.h"
#include "bond.h"
#include "ofproto/ofproto-dpif.h"
#include "ofproto/ofproto-provider.h"
#include "packet-dpif.h"
+#include "ovs-router.h"
+#include "tnl-ports.h"
#include "tunnel.h"
#include "vlog.h"
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;
- struct rule_dpif *drop_frags_rule;
-
bool has_in_band; /* Bridge has in band control? */
bool forward_bpdu; /* Bridge forwards STP BPDUs? */
XC_NORMAL,
XC_FIN_TIMEOUT,
XC_GROUP,
+ XC_TNL_ARP,
};
/* xlate_cache entries hold enough information to perform the side effects of
struct group_dpif *group;
struct ofputil_bucket *bucket;
} group;
+ struct {
+ char br_name[IFNAMSIZ];
+ ovs_be32 d_ip;
+ } tnl_arp_cache;
} u;
};
static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len,
struct xlate_ctx *);
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 *);
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 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 *,
- struct rule_dpif *miss_rule,
- struct rule_dpif *no_packet_in_rule,
- struct rule_dpif *drop_frags_rule,
const struct mac_learning *, struct stp *,
struct rstp *, const struct mcast_snooping *,
const struct mbridge *,
struct xport *);
static void xlate_xcfg_free(struct xlate_cfg *);
+static inline void
+xlate_report(struct xlate_ctx *ctx, const char *s)
+{
+ if (OVS_UNLIKELY(ctx->xin->report_hook)) {
+ ctx->xin->report_hook(ctx->xin, s, ctx->recurse);
+ }
+}
static void
xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge)
static void
xlate_xbridge_set(struct xbridge *xbridge,
struct dpif *dpif,
- struct rule_dpif *miss_rule,
- struct rule_dpif *no_packet_in_rule,
- struct rule_dpif *drop_frags_rule,
const struct mac_learning *ml, struct stp *stp,
struct rstp *rstp, const struct mcast_snooping *ms,
const struct mbridge *mbridge,
xbridge->dpif = dpif;
xbridge->forward_bpdu = forward_bpdu;
xbridge->has_in_band = has_in_band;
- xbridge->miss_rule = miss_rule;
- xbridge->no_packet_in_rule = no_packet_in_rule;
- xbridge->drop_frags_rule = drop_frags_rule;
xbridge->enable_recirc = enable_recirc;
xbridge->variable_length_userdata = variable_length_userdata;
xbridge->max_mpls_depth = max_mpls_depth;
xlate_xbridge_init(new_xcfg, new_xbridge);
xlate_xbridge_set(new_xbridge,
- xbridge->dpif, xbridge->miss_rule,
- xbridge->no_packet_in_rule, xbridge->drop_frags_rule,
- xbridge->ml, xbridge->stp,
+ xbridge->dpif, xbridge->ml, xbridge->stp,
xbridge->rstp, xbridge->ms, xbridge->mbridge,
xbridge->sflow, xbridge->ipfix, xbridge->netflow,
xbridge->forward_bpdu,
struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
ovsrcu_set(&xcfgp, new_xcfg);
- ovsrcu_postpone(xlate_xcfg_free, xcfg);
-
+ ovsrcu_synchronize();
+ xlate_xcfg_free(xcfg);
new_xcfg = NULL;
}
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,
- struct rule_dpif *drop_frags_rule,
+ struct dpif *dpif,
const struct mac_learning *ml, struct stp *stp,
struct rstp *rstp, const struct mcast_snooping *ms,
const struct mbridge *mbridge,
free(xbridge->name);
xbridge->name = xstrdup(name);
- xlate_xbridge_set(xbridge, dpif, miss_rule, no_packet_in_rule,
- drop_frags_rule, ml, stp,
- rstp, ms, mbridge, sflow, ipfix, netflow,
- forward_bpdu, has_in_band, enable_recirc,
+ xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix,
+ netflow, forward_bpdu, has_in_band, enable_recirc,
variable_length_userdata, max_mpls_depth,
masked_set_action);
}
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
static bool
xport_rstp_learn_state(const struct xport *xport)
{
- return rstp_learn_in_state(xport_get_rstp_port_state(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 rstp_forward_in_state(xport_get_rstp_port_state(xport));
+ return xport->xbridge->rstp && xport->rstp_port
+ ? rstp_forward_in_state(xport_get_rstp_port_state(xport))
+ : true;
}
static bool
}
}
+static int
+tnl_route_lookup_flow(const struct flow *oflow,
+ ovs_be32 *ip, struct xport **out_port)
+{
+ char out_dev[IFNAMSIZ];
+ struct xbridge *xbridge;
+ struct xlate_cfg *xcfg;
+ ovs_be32 gw;
+
+ if (!ovs_router_lookup(oflow->tunnel.ip_dst, out_dev, &gw)) {
+ return -ENOENT;
+ }
+
+ if (gw) {
+ *ip = gw;
+ } else {
+ *ip = oflow->tunnel.ip_dst;
+ }
+
+ 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;
+
+ 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;
+}
+
+static int
+xlate_flood_packet(struct xbridge *xbridge, struct ofpbuf *packet)
+{
+ 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.in_port.ofp_port = OFPP_NONE;
+ output.port = OFPP_FLOOD;
+ output.max_len = 0;
+
+ return ofproto_dpif_execute_actions(xbridge->ofproto, &flow, NULL,
+ &output.ofpact, sizeof output,
+ packet);
+}
+
+static void
+tnl_send_arp_request(const struct xport *out_dev, const uint8_t eth_src[ETH_ADDR_LEN],
+ ovs_be32 ip_src, ovs_be32 ip_dst)
+{
+ struct xbridge *xbridge = out_dev->xbridge;
+ struct ofpbuf packet;
+
+ ofpbuf_init(&packet, 0);
+ compose_arp(&packet, eth_src, ip_src, ip_dst);
+
+ xlate_flood_packet(xbridge, &packet);
+ ofpbuf_uninit(&packet);
+}
+
+static int
+build_tunnel_send(const struct xlate_ctx *ctx, const struct xport *xport,
+ const struct flow *flow, odp_port_t tunnel_odp_port)
+{
+ struct ovs_action_push_tnl tnl_push_data;
+ struct xport *out_dev = NULL;
+ ovs_be32 s_ip, d_ip = 0;
+ uint8_t smac[ETH_ADDR_LEN];
+ uint8_t dmac[ETH_ADDR_LEN];
+ int err;
+
+ err = tnl_route_lookup_flow(flow, &d_ip, &out_dev);
+ if (err) {
+ return err;
+ }
+
+ /* Use mac addr of bridge port of the peer. */
+ err = netdev_get_etheraddr(out_dev->netdev, smac);
+ if (err) {
+ return err;
+ }
+
+ err = netdev_get_in4(out_dev->netdev, (struct in_addr *) &s_ip, NULL);
+ if (err) {
+ return err;
+ }
+
+ err = tnl_arp_lookup(out_dev->xbridge->name, d_ip, dmac);
+ if (err) {
+ tnl_send_arp_request(out_dev, smac, s_ip, d_ip);
+ return err;
+ }
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_ARP);
+ strncpy(entry->u.tnl_arp_cache.br_name, out_dev->xbridge->name, IFNAMSIZ);
+ entry->u.tnl_arp_cache.d_ip = d_ip;
+ }
+ err = tnl_port_build_header(xport->ofport, flow,
+ dmac, smac, s_ip, &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->xout->odp_actions, &tnl_push_data);
+ return 0;
+}
+
static void
compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port,
bool check_stp)
const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port);
struct flow_wildcards *wc = &ctx->xout->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 == 28);
+ memset(&flow_tnl, 0, sizeof flow_tnl);
if (!xport) {
xlate_report(ctx, "Nonexistent output port");
* 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;
+ flow_tnl = flow->tunnel;
odp_port = tnl_port_send(xport->ofport, flow, &ctx->xout->wc);
if (odp_port == ODPP_NONE) {
xlate_report(ctx, "Tunneling decided against output");
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)) {
+ tnl_push_pop_send = true;
+ } else {
+ commit_odp_tunnel_action(flow, &ctx->base_flow,
+ ctx->xout->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,
+ wc,
ctx->xbridge->masked_set_action);
if (ctx->use_recirc) {
nl_msg_put_u32(ctx->xout->odp_actions, OVS_ACTION_ATTR_RECIRC,
xr->recirc_id);
} else {
- add_ipfix_output_action(ctx, out_port);
- 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->xout->odp_actions,
+ OVS_ACTION_ATTR_TUNNEL_POP,
+ odp_tnl_port);
+ } else {
+ /* Tunnel push-pop action is not compatible with
+ * IPFIX action. */
+ add_ipfix_output_action(ctx, out_port);
+ nl_msg_put_odp_port(ctx->xout->odp_actions,
+ OVS_ACTION_ATTR_OUTPUT,
+ out_port);
+ }
+ }
}
ctx->sflow_odp_port = odp_port;
bool may_packet_in, bool honor_table_miss)
{
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;
+ struct flow_wildcards *wc;
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;
+ wc = (ctx->xin->skip_wildcards) ? NULL : &ctx->xout->wc;
- /* 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->resubmit_stats);
- ctx->xin->flow.in_port.ofp_port = old_in_port;
+ rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto,
+ &ctx->xin->flow, wc,
+ ctx->xin->xcache != NULL,
+ ctx->xin->resubmit_stats,
+ &ctx->table_id, in_port,
+ may_packet_in, honor_table_miss);
if (OVS_UNLIKELY(ctx->xin->resubmit_hook)) {
ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse + 1);
}
- 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();
- }
-
- choose_miss_rule(config, ctx->xbridge->miss_rule,
- ctx->xbridge->no_packet_in_rule, &rule,
- ctx->xin->xcache != NULL);
-
-match:
if (rule) {
/* Fill in the cache entry here instead of xlate_recursively
* to make the reference counting more explicit. We take a
struct flow *flow = &ctx->xin->flow;
const struct ofpact *a;
+ if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) {
+ tnl_arp_snoop(flow, wc, ctx->xbridge->name);
+ }
/* dl_type already in the mask, not set below. */
OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
break;
case OFPACT_SET_L4_SRC_PORT:
- if (is_ip_any(flow)) {
+ 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)) {
+ 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);
&& !eth_type_mpls(flow->dl_type)) {
break;
}
-
+ /* A flow may wildcard nw_frag. Do nothing if setting a trasport
+ * header field on a packet that does not have them. */
mf_mask_field_and_prereqs(mf, &wc->masks);
- mf_set_flow_value_masked(mf, &set_field->value, &set_field->mask,
- flow);
+ 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:
xlate_out_uninit(&xout);
}
-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);
- }
-}
-
void
xlate_out_copy(struct xlate_out *dst, const struct xlate_out *src)
{
ctx.was_mpls = false;
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,
- ctx.xin->resubmit_stats);
- if (OVS_UNLIKELY(ctx.xin->report_hook)) {
- if (rule == ctx.xbridge->miss_rule) {
- xlate_report(&ctx, "No match, flow generates \"packet in\"s.");
- } else if (rule == ctx.xbridge->no_packet_in_rule) {
- xlate_report(&ctx, "No match, packets dropped because "
- "OFPPC_NO_PACKET_IN is set on in_port.");
- } else if (rule == ctx.xbridge->drop_frags_rule) {
- xlate_report(&ctx, "Packets dropped because they are IP "
- "fragments and the fragment handling mode is "
- "\"drop\".");
- }
- }
+ rule = rule_dpif_lookup(ctx.xbridge->ofproto, flow,
+ xin->skip_wildcards ? NULL : wc,
+ ctx.xin->xcache != NULL,
+ ctx.xin->resubmit_stats, &ctx.table_id);
if (ctx.xin->resubmit_stats) {
rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats);
}
{
struct xc_entry *entry;
struct ofpbuf entries = xcache->entries;
+ uint8_t dmac[ETH_ADDR_LEN];
if (!stats->n_packets) {
return;
group_dpif_credit_stats(entry->u.group.group, entry->u.group.bucket,
stats);
break;
+ case XC_TNL_ARP:
+ /* Lookup arp to avoid arp timeout. */
+ tnl_arp_lookup(entry->u.tnl_arp_cache.br_name, entry->u.tnl_arp_cache.d_ip, dmac);
+ break;
default:
OVS_NOT_REACHED();
}
case XC_GROUP:
group_dpif_unref(entry->u.group.group);
break;
+ case XC_TNL_ARP:
+ break;
default:
OVS_NOT_REACHED();
}
projects / cascardo / ovs.git / blobdiff