X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=ofproto%2Fofproto-dpif-xlate.c;h=848c7780bebffb07af4c560941e911413cea6c63;hb=60d02c72941d5a4aeea85090f120a0cc03e945f2;hp=eb6a1f95f830c0073f77ef6c00da3637f90189fe;hpb=6f00e29b8b3f6996eceffc57b47bf707589d8335;p=cascardo%2Fovs.git diff --git a/ofproto/ofproto-dpif-xlate.c b/ofproto/ofproto-dpif-xlate.c index eb6a1f95f..848c7780b 100644 --- a/ofproto/ofproto-dpif-xlate.c +++ b/ofproto/ofproto-dpif-xlate.c @@ -42,6 +42,7 @@ #include "ofp-actions.h" #include "ofproto/ofproto-dpif-ipfix.h" #include "ofproto/ofproto-dpif-mirror.h" +#include "ofproto/ofproto-dpif-monitor.h" #include "ofproto/ofproto-dpif-sflow.h" #include "ofproto/ofproto-dpif.h" #include "ofproto/ofproto-provider.h" @@ -49,6 +50,7 @@ #include "vlog.h" COVERAGE_DEFINE(xlate_actions); +COVERAGE_DEFINE(xlate_actions_oversize); VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); @@ -56,6 +58,10 @@ VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); * flow translation. */ #define MAX_RESUBMIT_RECURSION 64 +/* Maximum number of resubmit actions in a flow translation, whether they are + * recursive or not. */ +#define MAX_RESUBMITS (MAX_RESUBMIT_RECURSION * MAX_RESUBMIT_RECURSION) + struct ovs_rwlock xlate_rwlock = OVS_RWLOCK_INITIALIZER; struct xbridge { @@ -71,6 +77,7 @@ struct xbridge { 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. */ /* Special rules installed by ofproto-dpif. */ @@ -78,7 +85,6 @@ struct xbridge { struct rule_dpif *no_packet_in_rule; enum ofp_config_flags frag; /* Fragmentation handling. */ - bool has_netflow; /* Bridge runs netflow? */ bool has_in_band; /* Bridge has in band control? */ bool forward_bpdu; /* Bridge forwards STP BPDUs? */ }; @@ -122,6 +128,7 @@ struct xport { struct xport *peer; /* Patch port peer or null. */ 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 hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ @@ -158,13 +165,32 @@ struct xlate_ctx { /* The rule that we are currently translating, or NULL. */ struct rule_dpif *rule; - int recurse; /* Recursion level, via xlate_table_action. */ + int mpls_depth_delta; /* Delta of the mpls stack depth since + * actions were last committed. + * Must be between -1 and 1 inclusive. */ + ovs_be32 pre_push_mpls_lse; /* Used to record the top-most MPLS LSE + * prior to an mpls_push so that it may be + * used for a subsequent mpls_pop. */ + + /* Resubmit statistics, via xlate_table_action(). */ + int recurse; /* Current resubmit nesting depth. */ + int resubmits; /* Total number of resubmits. */ + uint32_t orig_skb_priority; /* Priority when packet arrived. */ uint8_t table_id; /* OpenFlow table ID where flow was found. */ 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. */ bool exit; /* No further actions should be processed. */ + + /* 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. */ + struct ofpbuf action_set; /* Action set. */ + uint64_t action_set_stub[1024 / 8]; }; /* A controller may use OFPP_NONE as the ingress port to indicate that @@ -192,10 +218,12 @@ static struct hmap xports = HMAP_INITIALIZER(&xports); 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_normal(struct xlate_ctx *); -static 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); +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 void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, + uint8_t table_id, bool may_packet_in); static bool input_vid_is_valid(uint16_t vid, struct xbundle *, bool warn); static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); static void output_normal(struct xlate_ctx *, const struct xbundle *, @@ -219,8 +247,9 @@ xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, const struct mac_learning *ml, struct stp *stp, const struct mbridge *mbridge, const struct dpif_sflow *sflow, - const struct dpif_ipfix *ipfix, enum ofp_config_flags frag, - bool forward_bpdu, bool has_in_band, bool has_netflow) + const struct dpif_ipfix *ipfix, + const struct netflow *netflow, enum ofp_config_flags frag, + bool forward_bpdu, bool has_in_band) { struct xbridge *xbridge = xbridge_lookup(ofproto); @@ -258,13 +287,17 @@ xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, xbridge->stp = stp_ref(stp); } + 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->has_netflow = has_netflow; xbridge->frag = frag; xbridge->miss_rule = miss_rule; xbridge->no_packet_in_rule = no_packet_in_rule; @@ -371,7 +404,8 @@ xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, const struct cfm *cfm, const struct bfd *bfd, struct ofport_dpif *peer, int stp_port_no, const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, - enum ofputil_port_config config, bool is_tunnel, + enum ofputil_port_config config, + enum ofputil_port_state state, bool is_tunnel, bool may_enable) { struct xport *xport = xport_lookup(ofport); @@ -392,6 +426,7 @@ xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, 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; @@ -480,8 +515,10 @@ xlate_ofport_remove(struct ofport_dpif *ofport) * respectively), populates 'flow' with the result of odp_flow_key_to_flow(). * Optionally, if nonnull, populates 'fitnessp' with the fitness of 'flow' as * returned by odp_flow_key_to_flow(). Also, optionally populates 'ofproto' - * with the ofproto_dpif, and 'odp_in_port' with the datapath in_port, that - * 'packet' ingressed. + * 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. @@ -503,7 +540,9 @@ int xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, const struct nlattr *key, size_t key_len, struct flow *flow, enum odp_key_fitness *fitnessp, - struct ofproto_dpif **ofproto, odp_port_t *odp_in_port) + struct ofproto_dpif **ofproto, struct dpif_ipfix **ipfix, + struct dpif_sflow **sflow, struct netflow **netflow, + odp_port_t *odp_in_port) { enum odp_key_fitness fitness; const struct xport *xport; @@ -521,8 +560,8 @@ xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, } xport = xport_lookup(tnl_port_should_receive(flow) - ? tnl_port_receive(flow) - : odp_port_to_ofport(backer, flow->in_port.odp_port)); + ? 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) { @@ -534,18 +573,7 @@ xlate_receive(const struct dpif_backer *backer, struct ofpbuf *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'. - * - * The allocated space inside 'packet' probably also contains - * 'key', that is, both 'packet' and 'key' are probably part of - * a struct dpif_upcall (see the large comment on that - * structure definition), so pushing data on 'packet' is in - * general not a good idea since it could overwrite 'key' or - * free it as a side effect. However, it's OK in this special - * case because we know that 'packet' is inside a Netlink - * attribute: pushing 4 bytes will just overwrite the 4-byte - * "struct nlattr", which is fine since we don't need that - * header anymore. */ + * vlan_tci if it is called on 'packet'. */ eth_push_vlan(packet, flow->vlan_tci); } /* We can't reproduce 'key' from 'flow'. */ @@ -557,6 +585,18 @@ xlate_receive(const struct dpif_backer *backer, struct ofpbuf *packet, *ofproto = xport->xbridge->ofproto; } + if (ipfix) { + *ipfix = dpif_ipfix_ref(xport->xbridge->ipfix); + } + + if (sflow) { + *sflow = dpif_sflow_ref(xport->xbridge->sflow); + } + + if (netflow) { + *netflow = netflow_ref(xport->xbridge->netflow); + } + exit: if (fitnessp) { *fitnessp = fitness; @@ -694,6 +734,106 @@ ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) return xport ? xport->odp_port : ODPP_NONE; } +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; +} + +static const struct ofputil_bucket * +group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, + int depth); + +static bool +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; + } + + hit = group_first_live_bucket(ctx, group, depth) != NULL; + + group_dpif_release(group); + return hit; +} + +#define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ + +static bool +bucket_is_alive(const struct xlate_ctx *ctx, + const struct ofputil_bucket *bucket, int depth) +{ + if (depth >= MAX_LIVENESS_RECURSION) { + static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); + + VLOG_WARN_RL(&rl, "bucket chaining exceeded %d links", + MAX_LIVENESS_RECURSION); + 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)); +} + +static const 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; + + group_dpif_get_buckets(group, &buckets); + LIST_FOR_EACH (bucket, list_node, buckets) { + if (bucket_is_alive(ctx, bucket, depth)) { + return bucket; + } + } + + return NULL; +} + +static const 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; + uint32_t best_score = 0; + int i = 0; + + const struct ofputil_bucket *bucket; + const struct list *buckets; + + group_dpif_get_buckets(group, &buckets); + LIST_FOR_EACH (bucket, list_node, buckets) { + if (bucket_is_alive(ctx, bucket, 0)) { + uint32_t score = (hash_int(i, basis) & 0xffff) * bucket->weight; + if (score >= best_score) { + best_bucket = bucket; + best_score = score; + } + } + i++; + } + + return best_bucket; +} + static bool xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) { @@ -829,7 +969,7 @@ add_mirror_actions(struct xlate_ctx *ctx, const struct flow *orig_flow) bool has_mirror; int out_vlan; - has_mirror = mirror_get(xbridge->mbridge, mirror_mask_ffs(mirrors) - 1, + has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), &vlans, &dup_mirrors, &out, &out_vlan); ovs_assert(has_mirror); @@ -887,7 +1027,7 @@ input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) return vid ? vid : in_xbundle->vlan; default: - NOT_REACHED(); + OVS_NOT_REACHED(); } } @@ -940,7 +1080,7 @@ input_vid_is_valid(uint16_t vid, struct xbundle *in_xbundle, bool warn) return true; default: - NOT_REACHED(); + OVS_NOT_REACHED(); } } @@ -967,7 +1107,7 @@ output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) return vlan == out_xbundle->vlan ? 0 : vlan; default: - NOT_REACHED(); + OVS_NOT_REACHED(); } } @@ -998,6 +1138,11 @@ output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, /* No slaves enabled, so drop packet. */ return; } + + if (ctx->xin->resubmit_stats) { + bond_account(out_xbundle->bond, &ctx->xin->flow, vid, + ctx->xin->resubmit_stats->n_bytes); + } } old_tci = *flow_tci; @@ -1057,7 +1202,7 @@ is_mac_learning_update_needed(const struct mac_learning *ml, const struct flow *flow, struct flow_wildcards *wc, int vlan, struct xbundle *in_xbundle) - OVS_REQ_RDLOCK(ml->rwlock) +OVS_REQ_RDLOCK(ml->rwlock) { struct mac_entry *mac; @@ -1097,7 +1242,7 @@ static void update_learning_table__(const struct xbridge *xbridge, const struct flow *flow, struct flow_wildcards *wc, int vlan, struct xbundle *in_xbundle) - OVS_REQ_WRLOCK(xbridge->ml->rwlock) +OVS_REQ_WRLOCK(xbridge->ml->rwlock) { struct mac_entry *mac; @@ -1206,7 +1351,7 @@ is_admissible(struct xlate_ctx *ctx, struct xport *in_port, || mac_entry_is_grat_arp_locked(mac))) { ovs_rwlock_unlock(&xbridge->ml->rwlock); xlate_report(ctx, "SLB bond thinks this packet looped back, " - "dropping"); + "dropping"); return false; } ovs_rwlock_unlock(&xbridge->ml->rwlock); @@ -1501,6 +1646,14 @@ process_special(struct xlate_ctx *ctx, const struct flow *flow, } 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); + } + } } return SLOW_BFD; } else if (xport->xbundle && xport->xbundle->lacp @@ -1534,7 +1687,7 @@ compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, /* If 'struct flow' gets additional metadata, we'll need to zero it out * before traversing a patch port. */ - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 23); if (!xport) { xlate_report(ctx, "Nonexistent output port"); @@ -1566,7 +1719,7 @@ compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, special = process_special(ctx, &ctx->xin->flow, peer, ctx->xin->packet); if (special) { - ctx->xout->slow = special; + ctx->xout->slow |= special; } else if (may_receive(peer, ctx)) { if (xport_stp_forward_state(peer)) { xlate_table_action(ctx, flow->in_port.ofp_port, 0, true); @@ -1589,6 +1742,9 @@ compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, if (ctx->xin->resubmit_stats) { netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); + if (peer->bfd) { + bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); + } } return; @@ -1644,8 +1800,10 @@ compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, } if (out_port != ODPP_NONE) { - commit_odp_actions(flow, &ctx->base_flow, - &ctx->xout->odp_actions, &ctx->xout->wc); + ctx->xout->slow |= commit_odp_actions(flow, &ctx->base_flow, + &ctx->xout->odp_actions, + &ctx->xout->wc, + &ctx->mpls_depth_delta); nl_msg_put_odp_port(&ctx->xout->odp_actions, OVS_ACTION_ATTR_OUTPUT, out_port); @@ -1669,7 +1827,6 @@ compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port) static void xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) - OVS_RELEASES(rule) { struct rule_dpif *old_rule = ctx->rule; struct rule_actions *actions; @@ -1678,6 +1835,7 @@ xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); } + ctx->resubmits++; ctx->recurse++; ctx->rule = rule; actions = rule_dpif_get_actions(rule); @@ -1685,19 +1843,38 @@ xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule) rule_actions_unref(actions); 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); - rule_dpif_release(rule); + if (ctx->recurse >= MAX_RESUBMIT_RECURSION) { + VLOG_ERR_RL(&rl, "resubmit actions recursed over %d times", + MAX_RESUBMIT_RECURSION); + } else if (ctx->resubmits >= MAX_RESUBMITS) { + VLOG_ERR_RL(&rl, "over %d resubmit actions", MAX_RESUBMITS); + } else if (ctx->xout->odp_actions.size > UINT16_MAX) { + VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of actions"); + } else if (ctx->stack.size >= 65536) { + VLOG_ERR_RL(&rl, "resubmits yielded over 64 kB of stack"); + } else { + return true; + } + + return false; } static void xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, bool may_packet_in) { - if (ctx->recurse < MAX_RESUBMIT_RECURSION) { - struct rule_dpif *rule; + 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; - bool got_rule; + struct rule_dpif *rule; ctx->table_id = table_id; @@ -1705,42 +1882,144 @@ xlate_table_action(struct xlate_ctx *ctx, * original input port (otherwise OFPP_NORMAL and OFPP_IN_PORT will * have surprising behavior). */ ctx->xin->flow.in_port.ofp_port = in_port; - got_rule = rule_dpif_lookup_in_table(ctx->xbridge->ofproto, - &ctx->xin->flow, &ctx->xout->wc, - table_id, &rule); + rule_dpif_lookup_in_table(ctx->xbridge->ofproto, &ctx->xin->flow, + !skip_wildcards ? &ctx->xout->wc : NULL, + table_id, &rule); ctx->xin->flow.in_port.ofp_port = old_in_port; if (ctx->xin->resubmit_hook) { ctx->xin->resubmit_hook(ctx->xin, rule, ctx->recurse); } - if (got_rule) { - xlate_recursively(ctx, rule); - } else if (may_packet_in) { + if (!rule && may_packet_in) { struct xport *xport; /* XXX * check if table configuration flags - * OFPTC_TABLE_MISS_CONTROLLER, default. - * OFPTC_TABLE_MISS_CONTINUE, - * OFPTC_TABLE_MISS_DROP - * When OF1.0, OFPTC_TABLE_MISS_CONTINUE is used. What to do? */ + * OFPTC11_TABLE_MISS_CONTROLLER, default. + * OFPTC11_TABLE_MISS_CONTINUE, + * OFPTC11_TABLE_MISS_DROP + * When OF1.0, OFPTC11_TABLE_MISS_CONTINUE is used. What to do? */ xport = get_ofp_port(ctx->xbridge, ctx->xin->flow.in_port.ofp_port); choose_miss_rule(xport ? xport->config : 0, ctx->xbridge->miss_rule, ctx->xbridge->no_packet_in_rule, &rule); + } + if (rule) { xlate_recursively(ctx, rule); + rule_dpif_unref(rule); } ctx->table_id = old_table_id; - } else { - static struct vlog_rate_limit recurse_rl = VLOG_RATE_LIMIT_INIT(1, 1); + return; + } - VLOG_ERR_RL(&recurse_rl, "resubmit actions recursed over %d times", - MAX_RESUBMIT_RECURSION); + ctx->exit = true; +} + +static void +xlate_group_bucket(struct xlate_ctx *ctx, const 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); + + ofpacts_execute_action_set(&action_list, &action_set); + ctx->recurse++; + do_xlate_actions(action_list.data, action_list.size, ctx); + ctx->recurse--; + + ofpbuf_uninit(&action_set); + ofpbuf_uninit(&action_list); +} + +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; + + group_dpif_get_buckets(group, &buckets); + + LIST_FOR_EACH (bucket, list_node, buckets) { + 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; } } +static void +xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) +{ + const struct ofputil_bucket *bucket; + + bucket = group_first_live_bucket(ctx, group, 0); + if (bucket) { + xlate_group_bucket(ctx, bucket); + } +} + +static void +xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) +{ + struct flow_wildcards *wc = &ctx->xout->wc; + const struct ofputil_bucket *bucket; + uint32_t basis; + + basis = hash_bytes(ctx->xin->flow.dl_dst, sizeof ctx->xin->flow.dl_dst, 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); + } +} + +static void +xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) +{ + switch (group_dpif_get_type(group)) { + case OFPGT11_ALL: + case OFPGT11_INDIRECT: + xlate_all_group(ctx, group); + break; + case OFPGT11_SELECT: + xlate_select_group(ctx, group); + break; + case OFPGT11_FF: + xlate_ff_group(ctx, group); + break; + default: + OVS_NOT_REACHED(); + } + group_dpif_release(group); +} + +static bool +xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) +{ + if (xlate_resubmit_resource_check(ctx)) { + struct group_dpif *group; + bool got_group; + + got_group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, &group); + if (got_group) { + xlate_group_action__(ctx, group); + } else { + return true; + } + } + + return false; +} + static void xlate_ofpact_resubmit(struct xlate_ctx *ctx, const struct ofpact_resubmit *resubmit) @@ -1786,12 +2065,11 @@ execute_controller_action(struct xlate_ctx *ctx, int len, enum ofp_packet_in_reason reason, uint16_t controller_id) { - struct ofputil_packet_in *pin; + struct ofproto_packet_in *pin; struct ofpbuf *packet; struct flow key; - ovs_assert(!ctx->xout->slow || ctx->xout->slow == SLOW_CONTROLLER); - ctx->xout->slow = SLOW_CONTROLLER; + ctx->xout->slow |= SLOW_CONTROLLER; if (!ctx->xin->packet) { return; } @@ -1802,28 +2080,34 @@ execute_controller_action(struct xlate_ctx *ctx, int len, key.pkt_mark = 0; memset(&key.tunnel, 0, sizeof key.tunnel); - commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, - &ctx->xout->odp_actions, &ctx->xout->wc); + ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, + &ctx->xout->odp_actions, + &ctx->xout->wc, + &ctx->mpls_depth_delta); odp_execute_actions(NULL, packet, &key, ctx->xout->odp_actions.data, ctx->xout->odp_actions.size, NULL, NULL); pin = xmalloc(sizeof *pin); - pin->packet_len = packet->size; - pin->packet = ofpbuf_steal_data(packet); - pin->reason = reason; - pin->controller_id = controller_id; - pin->table_id = ctx->table_id; - pin->cookie = ctx->rule ? rule_dpif_get_flow_cookie(ctx->rule) : 0; + pin->up.packet_len = packet->size; + 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); - pin->send_len = len; - flow_get_metadata(&ctx->xin->flow, &pin->fmd); + flow_get_metadata(&ctx->xin->flow, &pin->up.fmd); + pin->controller_id = controller_id; + pin->send_len = len; + pin->generated_by_table_miss = (ctx->rule + && rule_dpif_is_table_miss(ctx->rule)); ofproto_dpif_send_packet_in(ctx->xbridge->ofproto, pin); ofpbuf_delete(packet); } -static void +static bool compose_mpls_push_action(struct xlate_ctx *ctx, ovs_be16 eth_type) { struct flow_wildcards *wc = &ctx->xout->wc; @@ -1831,12 +2115,35 @@ compose_mpls_push_action(struct xlate_ctx *ctx, ovs_be16 eth_type) ovs_assert(eth_type_mpls(eth_type)); + /* If mpls_depth_delta is negative then an MPLS POP action has been + * composed and the resulting MPLS label stack is unknown. This means + * an MPLS PUSH action can't be composed as it needs to know either the + * top-most MPLS LSE to use as a template for the new MPLS LSE, or that + * there is no MPLS label stack present. Thus, stop processing. + * + * If mpls_depth_delta is positive then an MPLS PUSH action has been + * composed and no further MPLS PUSH action may be performed without + * losing MPLS LSE and ether type information held in xtx->xin->flow. + * Thus, stop processing. + * + * If the MPLS LSE of the flow and base_flow differ then the MPLS LSE + * has been updated. Performing a MPLS PUSH action may be would result in + * losing MPLS LSE and ether type information held in xtx->xin->flow. + * Thus, stop processing. + * + * It is planned that in the future this case will be handled + * by recirculation */ + if (ctx->mpls_depth_delta || + ctx->xin->flow.mpls_lse != ctx->base_flow.mpls_lse) { + return true; + } + memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); - memset(&wc->masks.mpls_depth, 0xff, sizeof wc->masks.mpls_depth); - if (flow->mpls_depth) { + ctx->pre_push_mpls_lse = ctx->xin->flow.mpls_lse; + + if (eth_type_mpls(ctx->xin->flow.dl_type)) { flow->mpls_lse &= ~htonl(MPLS_BOS_MASK); - flow->mpls_depth++; } else { ovs_be32 label; uint8_t tc, ttl; @@ -1851,30 +2158,48 @@ compose_mpls_push_action(struct xlate_ctx *ctx, ovs_be16 eth_type) tc = (flow->nw_tos & IP_DSCP_MASK) >> 2; ttl = flow->nw_ttl ? flow->nw_ttl : 0x40; flow->mpls_lse = set_mpls_lse_values(ttl, tc, 1, label); - flow->mpls_depth = 1; } flow->dl_type = eth_type; + ctx->mpls_depth_delta++; + + return false; } -static void +static bool 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; - ovs_assert(eth_type_mpls(ctx->xin->flow.dl_type)); - ovs_assert(!eth_type_mpls(eth_type)); + if (!eth_type_mpls(ctx->xin->flow.dl_type)) { + return true; + } + + /* If mpls_depth_delta is negative then an MPLS POP action has been + * composed. Performing another MPLS POP action + * would result in losing ether type that results from + * the already composed MPLS POP. Thus, stop processing. + * + * It is planned that in the future this case will be handled + * by recirculation */ + if (ctx->mpls_depth_delta < 0) { + return true; + } memset(&wc->masks.mpls_lse, 0xff, sizeof wc->masks.mpls_lse); - memset(&wc->masks.mpls_depth, 0xff, sizeof wc->masks.mpls_depth); - if (flow->mpls_depth) { - flow->mpls_depth--; - flow->mpls_lse = htonl(0); - if (!flow->mpls_depth) { - flow->dl_type = eth_type; - } + /* If mpls_depth_delta is positive then an MPLS PUSH action has been + * executed and the previous MPLS LSE saved in ctx->pre_push_mpls_lse. The + * flow's MPLS LSE should be restored to that value to allow any + * subsequent actions that update of the LSE to be executed correctly. + */ + if (ctx->mpls_depth_delta > 0) { + ctx->xin->flow.mpls_lse = ctx->pre_push_mpls_lse; } + + ctx->xin->flow.dl_type = eth_type; + ctx->mpls_depth_delta--; + + return false; } static bool @@ -1903,6 +2228,54 @@ compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) } } +static bool +compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) +{ + if (!eth_type_mpls(ctx->xin->flow.dl_type)) { + return true; + } + + /* If mpls_depth_delta is negative then an MPLS POP action has been + * executed and the resulting MPLS label stack is unknown. This means + * a SET MPLS LABEL action can't be executed as it needs to manipulate + * the top-most MPLS LSE. Thus, stop processing. + * + * It is planned that in the future this case will be handled + * by recirculation. + */ + if (ctx->mpls_depth_delta < 0) { + return true; + } + + ctx->xout->wc.masks.mpls_lse |= htonl(MPLS_LABEL_MASK); + set_mpls_lse_label(&ctx->xin->flow.mpls_lse, label); + return false; +} + +static bool +compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) +{ + if (!eth_type_mpls(ctx->xin->flow.dl_type)) { + return true; + } + + /* If mpls_depth_delta is negative then an MPLS POP action has been + * executed and the resulting MPLS label stack is unknown. This means + * a SET MPLS TC action can't be executed as it needs to manipulate + * the top-most MPLS LSE. Thus, stop processing. + * + * It is planned that in the future this case will be handled + * by recirculation. + */ + if (ctx->mpls_depth_delta < 0) { + return true; + } + + ctx->xout->wc.masks.mpls_lse |= htonl(MPLS_TC_MASK); + set_mpls_lse_tc(&ctx->xin->flow.mpls_lse, tc); + return false; +} + static bool compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) { @@ -1910,6 +2283,18 @@ compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) return true; } + /* If mpls_depth_delta is negative then an MPLS POP action has been + * executed and the resulting MPLS label stack is unknown. This means + * a SET MPLS TTL push action can't be executed as it needs to manipulate + * the top-most MPLS LSE. Thus, stop processing. + * + * It is planned that in the future this case will be handled + * by recirculation. + */ + if (ctx->mpls_depth_delta < 0) { + return true; + } + ctx->xout->wc.masks.mpls_lse |= htonl(MPLS_TTL_MASK); set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse, ttl); return false; @@ -2099,7 +2484,8 @@ static void xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) { - struct ofputil_flow_mod *fm; + uint64_t ofpacts_stub[1024 / 8]; + struct ofputil_flow_mod fm; struct ofpbuf ofpacts; ctx->xout->has_learn = true; @@ -2110,11 +2496,10 @@ xlate_learn_action(struct xlate_ctx *ctx, return; } - fm = xmalloc(sizeof *fm); - ofpbuf_init(&ofpacts, 0); - learn_execute(learn, &ctx->xin->flow, fm, &ofpacts); - - ofproto_dpif_flow_mod(ctx->xbridge->ofproto, fm); + 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); } static void @@ -2136,8 +2521,10 @@ xlate_sample_action(struct xlate_ctx *ctx, * the same percentage. */ uint32_t probability = (os->probability << 16) | os->probability; - commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, - &ctx->xout->odp_actions, &ctx->xout->wc); + ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, + &ctx->xout->odp_actions, + &ctx->xout->wc, + &ctx->mpls_depth_delta); compose_flow_sample_cookie(os->probability, os->collector_set_id, os->obs_domain_id, os->obs_point_id, &cookie); @@ -2165,6 +2552,26 @@ may_receive(const struct xport *xport, struct xlate_ctx *ctx) return true; } +static void +xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact *a) +{ + 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); +} + +static void +xlate_action_set(struct xlate_ctx *ctx) +{ + uint64_t action_list_stub[1024 / 64]; + struct ofpbuf action_list; + + ofpbuf_use_stub(&action_list, action_list_stub, sizeof action_list_stub); + ofpacts_execute_action_set(&action_list, &ctx->action_set); + do_xlate_actions(action_list.data, action_list.size, ctx); + ofpbuf_uninit(&action_list); +} + static void do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, struct xlate_ctx *ctx) @@ -2173,9 +2580,13 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, struct flow *flow = &ctx->xin->flow; const struct ofpact *a; + /* dl_type already in the mask, not set below. */ + OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { struct ofpact_controller *controller; const struct ofpact_metadata *metadata; + const struct ofpact_set_field *set_field; + const struct mf_field *mf; if (ctx->exit) { break; @@ -2188,7 +2599,9 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_GROUP: - /* XXX not yet implemented */ + if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { + return; + } break; case OFPACT_CONTROLLER: @@ -2204,17 +2617,22 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, case OFPACT_SET_VLAN_VID: wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); - flow->vlan_tci &= ~htons(VLAN_VID_MASK); - flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) - | htons(VLAN_CFI)); + if (flow->vlan_tci & htons(VLAN_CFI) || + ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { + flow->vlan_tci &= ~htons(VLAN_VID_MASK); + flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) + | htons(VLAN_CFI)); + } break; case OFPACT_SET_VLAN_PCP: wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); - flow->vlan_tci &= ~htons(VLAN_PCP_MASK); - flow->vlan_tci |= - htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp << VLAN_PCP_SHIFT) - | VLAN_CFI); + if (flow->vlan_tci & htons(VLAN_CFI) || + ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { + flow->vlan_tci &= ~htons(VLAN_PCP_MASK); + flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp + << VLAN_PCP_SHIFT) | VLAN_CFI); + } break; case OFPACT_STRIP_VLAN: @@ -2239,40 +2657,54 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_SET_IPV4_SRC: - memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); 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: - memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); 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_IPV4_DSCP: - wc->masks.nw_tos |= IP_DSCP_MASK; - /* OpenFlow 1.0 only supports IPv4. */ - if (flow->dl_type == htons(ETH_TYPE_IP)) { + case OFPACT_SET_IP_DSCP: + if (is_ip_any(flow)) { + wc->masks.nw_tos |= IP_DSCP_MASK; flow->nw_tos &= ~IP_DSCP_MASK; - flow->nw_tos |= ofpact_get_SET_IPV4_DSCP(a)->dscp; + flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; + } + break; + + case OFPACT_SET_IP_ECN: + if (is_ip_any(flow)) { + wc->masks.nw_tos |= IP_ECN_MASK; + flow->nw_tos &= ~IP_ECN_MASK; + flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; + } + break; + + case OFPACT_SET_IP_TTL: + 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: - memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); - memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); if (is_ip_any(flow)) { + 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: - memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); - memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); if (is_ip_any(flow)) { + 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; @@ -2298,7 +2730,21 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_REG_LOAD: - nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow); + nxm_execute_reg_load(ofpact_get_REG_LOAD(a), flow, wc); + break; + + case OFPACT_SET_FIELD: + set_field = ofpact_get_SET_FIELD(a); + mf = set_field->field; + mf_mask_field_and_prereqs(mf, &wc->masks); + + /* Set field action only ever overwrites packet's outermost + * applicable header fields. Do nothing if no header exists. */ + if ((mf->id != MFF_VLAN_VID || flow->vlan_tci & htons(VLAN_CFI)) + && ((mf->id != MFF_MPLS_LABEL && mf->id != MFF_MPLS_TC) + || flow->mpls_lse)) { + mf_set_flow_value(mf, &set_field->value, flow); + } break; case OFPACT_STACK_PUSH: @@ -2312,11 +2758,31 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_PUSH_MPLS: - compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)->ethertype); + if (compose_mpls_push_action(ctx, + ofpact_get_PUSH_MPLS(a)->ethertype)) { + return; + } break; case OFPACT_POP_MPLS: - compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); + if (compose_mpls_pop_action(ctx, + ofpact_get_POP_MPLS(a)->ethertype)) { + return; + } + break; + + case OFPACT_SET_MPLS_LABEL: + if (compose_set_mpls_label_action(ctx, + ofpact_get_SET_MPLS_LABEL(a)->label)) { + return; + } + break; + + case OFPACT_SET_MPLS_TC: + if (compose_set_mpls_tc_action(ctx, + ofpact_get_SET_MPLS_TC(a)->tc)) { + return; + } break; case OFPACT_SET_MPLS_TTL: @@ -2370,11 +2836,11 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_CLEAR_ACTIONS: - /* XXX - * Nothing to do because writa-actions is not supported for now. - * When writa-actions is supported, clear-actions also must - * be supported at the same time. - */ + ofpbuf_clear(&ctx->action_set); + break; + + case OFPACT_WRITE_ACTIONS: + xlate_write_actions(ctx, a); break; case OFPACT_WRITE_METADATA: @@ -2388,7 +2854,6 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, break; case OFPACT_GOTO_TABLE: { - /* It is assumed that goto-table is the last action. */ struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); ovs_assert(ctx->table_id < ogt->table_id); @@ -2407,7 +2872,7 @@ do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, void xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, const struct flow *flow, struct rule_dpif *rule, - uint8_t tcp_flags, const struct ofpbuf *packet) + uint16_t tcp_flags, const struct ofpbuf *packet) { xin->ofproto = ofproto; xin->flow = *flow; @@ -2420,6 +2885,7 @@ xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, xin->resubmit_hook = NULL; xin->report_hook = NULL; xin->resubmit_stats = NULL; + xin->skip_wildcards = false; } void @@ -2518,16 +2984,27 @@ actions_output_to_local_port(const struct xlate_ctx *ctx) return false; } +/* Thread safe call to xlate_actions__(). */ +void +xlate_actions(struct xlate_in *xin, struct xlate_out *xout) +{ + ovs_rwlock_rdlock(&xlate_rwlock); + xlate_actions__(xin, xout); + ovs_rwlock_unlock(&xlate_rwlock); +} + /* 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(). */ -void -xlate_actions(struct xlate_in *xin, struct xlate_out *xout) +static void +xlate_actions__(struct xlate_in *xin, struct xlate_out *xout) + OVS_REQ_RDLOCK(xlate_rwlock) { struct flow_wildcards *wc = &xout->wc; struct flow *flow = &xin->flow; + struct rule_dpif *rule = NULL; struct rule_actions *actions = NULL; enum slow_path_reason special; @@ -2540,8 +3017,6 @@ xlate_actions(struct xlate_in *xin, struct xlate_out *xout) COVERAGE_INC(xlate_actions); - ovs_rwlock_rdlock(&xlate_rwlock); - /* Flow initialization rules: * - 'base_flow' must match the kernel's view of the packet at the * time that action processing starts. 'flow' represents any @@ -2593,27 +3068,41 @@ xlate_actions(struct xlate_in *xin, struct xlate_out *xout) wc->masks.nw_frag |= FLOW_NW_FRAG_MASK; tnl_may_send = tnl_xlate_init(&ctx.base_flow, flow, wc); - if (ctx.xbridge->has_netflow) { + if (ctx.xbridge->netflow) { netflow_mask_wc(flow, wc); } ctx.recurse = 0; + ctx.resubmits = 0; ctx.orig_skb_priority = flow->skb_priority; ctx.table_id = 0; ctx.exit = false; + ctx.mpls_depth_delta = 0; + + if (!xin->ofpacts && !ctx.rule) { + rule_dpif_lookup(ctx.xbridge->ofproto, flow, + !xin->skip_wildcards ? wc : NULL, &rule); + if (ctx.xin->resubmit_stats) { + rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats); + } + ctx.rule = rule; + } + xout->fail_open = ctx.rule && rule_dpif_is_fail_open(ctx.rule); if (xin->ofpacts) { ofpacts = xin->ofpacts; ofpacts_len = xin->ofpacts_len; - } else if (xin->rule) { - actions = rule_dpif_get_actions(xin->rule); + } else if (ctx.rule) { + actions = rule_dpif_get_actions(ctx.rule); ofpacts = actions->ofpacts; ofpacts_len = actions->ofpacts_len; } else { - NOT_REACHED(); + OVS_NOT_REACHED(); } 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 (mbridge_has_mirrors(ctx.xbridge->mbridge)) { /* Do this conditionally because the copy is expensive enough that it @@ -2633,21 +3122,28 @@ xlate_actions(struct xlate_in *xin, struct xlate_out *xout) goto out; case OFPC_FRAG_REASM: - NOT_REACHED(); + OVS_NOT_REACHED(); case OFPC_FRAG_NX_MATCH: /* Nothing to do. */ break; case OFPC_INVALID_TTL_TO_CONTROLLER: - NOT_REACHED(); + OVS_NOT_REACHED(); } } in_port = get_ofp_port(ctx.xbridge, flow->in_port.ofp_port); + if (in_port && in_port->is_tunnel && ctx.xin->resubmit_stats) { + netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); + if (in_port->bfd) { + bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); + } + } + special = process_special(&ctx, flow, in_port, ctx.xin->packet); if (special) { - ctx.xout->slow = special; + ctx.xout->slow |= special; } else { size_t sample_actions_len; @@ -2672,6 +3168,10 @@ xlate_actions(struct xlate_in *xin, struct xlate_out *xout) } } + if (ctx.action_set.size) { + xlate_action_set(&ctx); + } + if (ctx.xbridge->has_in_band && in_band_must_output_to_local_port(flow) && !actions_output_to_local_port(&ctx)) { @@ -2685,15 +3185,80 @@ xlate_actions(struct xlate_in *xin, struct xlate_out *xout) } } + if (nl_attr_oversized(ctx.xout->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; + } + + 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); + + if (ctx.xbridge->netflow) { + const struct ofpact *ofpacts; + size_t ofpacts_len; + + ofpacts_len = actions->ofpacts_len; + ofpacts = actions->ofpacts; + if (ofpacts_len == 0 + || ofpacts->type != OFPACT_CONTROLLER + || ofpact_next(ofpacts) < ofpact_end(ofpacts, 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. */ + netflow_flow_update(ctx.xbridge->netflow, flow, + xout->nf_output_iface, + ctx.xin->resubmit_stats); + } + } + } + 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. */ - memset(&wc->masks.metadata, 0, sizeof wc->masks.metadata); - memset(&wc->masks.regs, 0, sizeof wc->masks.regs); + flow_wildcards_clear_non_packet_fields(wc); out: - ovs_rwlock_unlock(&xlate_rwlock); - rule_actions_unref(actions); + rule_dpif_unref(rule); +} + +/* 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) +{ + struct xport *xport; + struct ofpact_output output; + struct flow flow; + union flow_in_port in_port_; + int error; + + ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); + /* Use OFPP_NONE as the in_port to avoid special packet processing. */ + in_port_.ofp_port = OFPP_NONE; + flow_extract(packet, 0, 0, NULL, &in_port_, &flow); + + ovs_rwlock_rdlock(&xlate_rwlock); + xport = xport_lookup(ofport); + if (!xport) { + ovs_rwlock_unlock(&xlate_rwlock); + return EINVAL; + } + output.port = xport->ofp_port; + output.max_len = 0; + error = ofproto_dpif_execute_actions(xport->xbridge->ofproto, &flow, NULL, + &output.ofpact, sizeof output, + packet); + ovs_rwlock_unlock(&xlate_rwlock); + return error; }