#include "fail-open.h"
#include "hmapx.h"
#include "lacp.h"
+#include "learn.h"
#include "mac-learning.h"
#include "multipath.h"
#include "netdev.h"
* revalidating without a packet to refer to. */
const struct ofpbuf *packet;
+ /* Should OFPP_NORMAL MAC learning and NXAST_LEARN actions execute? We
+ * want to execute them if we are actually processing a packet, or if we
+ * are accounting for packets that the datapath has processed, but not if
+ * we are just revalidating. */
+ bool may_learn;
+
/* If nonnull, called just before executing a resubmit action.
*
* This is normally null so the client has to set it manually after
* to look at them after it returns. */
struct ofpbuf *odp_actions; /* Datapath actions. */
- tag_type tags; /* Tags associated with OFPP_NORMAL actions. */
+ tag_type tags; /* Tags associated with actions. */
bool may_set_up_flow; /* True ordinarily; false if the actions must
* be reassessed for every packet. */
+ bool has_learn; /* Actions include NXAST_LEARN? */
+ bool has_normal; /* Actions output to OFPP_NORMAL? */
uint16_t nf_output_iface; /* Output interface index for NetFlow. */
/* xlate_actions() initializes and uses these members, but the client has no
bool installed; /* Installed in datapath? */
bool may_install; /* True ordinarily; false if actions must
* be reassessed for every packet. */
+ bool has_learn; /* Actions include NXAST_LEARN? */
+ bool has_normal; /* Actions output to OFPP_NORMAL? */
size_t actions_len; /* Number of bytes in actions[]. */
struct nlattr *actions; /* Datapath actions. */
tag_type tags; /* Tags. */
/* Has 'rule' expired? */
now = time_msec();
if (rule->up.hard_timeout
- && now > rule->up.created + rule->up.hard_timeout * 1000) {
+ && now > rule->up.modified + rule->up.hard_timeout * 1000) {
reason = OFPRR_HARD_TIMEOUT;
} else if (rule->up.idle_timeout && list_is_empty(&rule->facets)
&& now > rule->used + rule->up.idle_timeout * 1000) {
odp_actions = xlate_actions(&ctx, rule->up.actions, rule->up.n_actions);
facet->tags = ctx.tags;
facet->may_install = ctx.may_set_up_flow;
+ facet->has_learn = ctx.has_learn;
+ facet->has_normal = ctx.has_normal;
facet->nf_flow.output_iface = ctx.nf_output_iface;
if (facet->actions_len != odp_actions->size
facet_account(struct ofproto_dpif *ofproto, struct facet *facet)
{
uint64_t n_bytes;
- struct ofbundle *in_bundle;
const struct nlattr *a;
- tag_type dummy = 0;
unsigned int left;
ovs_be16 vlan_tci;
- int vlan;
if (facet->byte_count <= facet->accounted_bytes) {
return;
n_bytes = facet->byte_count - facet->accounted_bytes;
facet->accounted_bytes = facet->byte_count;
- /* Test that 'tags' is nonzero to ensure that only flows that include an
- * OFPP_NORMAL action are used for learning and bond slave rebalancing.
- * This works because OFPP_NORMAL always sets a nonzero tag value.
- *
- * Feed information from the active flows back into the learning table to
+ /* Feed information from the active flows back into the learning table to
* ensure that table is always in sync with what is actually flowing
* through the datapath. */
- if (!facet->tags
- || !is_admissible(ofproto, &facet->flow, false, &dummy,
- &vlan, &in_bundle)) {
- return;
- }
+ if (facet->has_learn || facet->has_normal) {
+ struct action_xlate_ctx ctx;
- update_learning_table(ofproto, &facet->flow, vlan, in_bundle);
+ action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
+ ctx.may_learn = true;
+ ofpbuf_delete(xlate_actions(&ctx, facet->rule->up.actions,
+ facet->rule->up.n_actions));
+ }
- if (!ofproto->has_bonded_bundles) {
+ if (!facet->has_normal || !ofproto->has_bonded_bundles) {
return;
}
}
break;
- case OVS_ACTION_ATTR_STRIP_VLAN:
+ case OVS_ACTION_ATTR_POP_VLAN:
vlan_tci = htons(0);
break;
- case OVS_ACTION_ATTR_SET_DL_TCI:
+ case OVS_ACTION_ATTR_PUSH_VLAN:
vlan_tci = nl_attr_get_be16(a);
break;
}
facet->tags = ctx.tags;
facet->nf_flow.output_iface = ctx.nf_output_iface;
facet->may_install = ctx.may_set_up_flow;
+ facet->has_learn = ctx.has_learn;
+ facet->has_normal = ctx.has_normal;
if (actions_changed) {
free(facet->actions);
facet->actions_len = odp_actions->size;
if (base->vlan_tci != flow->vlan_tci) {
if (!(flow->vlan_tci & htons(VLAN_CFI))) {
- nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_STRIP_VLAN);
+ nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
} else {
- nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_SET_DL_TCI,
+ if (base->vlan_tci != htons(0)) {
+ nl_msg_put_flag(odp_actions, OVS_ACTION_ATTR_POP_VLAN);
+ }
+ nl_msg_put_be16(odp_actions, OVS_ACTION_ATTR_PUSH_VLAN,
flow->vlan_tci & ~htons(VLAN_CFI));
}
base->vlan_tci = flow->vlan_tci;
}
}
+static void
+xlate_learn_action(struct action_xlate_ctx *ctx,
+ const struct nx_action_learn *learn)
+{
+ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
+ struct ofputil_flow_mod fm;
+ int error;
+
+ learn_execute(learn, &ctx->flow, &fm);
+
+ error = ofproto_flow_mod(&ctx->ofproto->up, &fm);
+ if (error && !VLOG_DROP_WARN(&rl)) {
+ char *msg = ofputil_error_to_string(error);
+ VLOG_WARN("learning action failed to modify flow table (%s)", msg);
+ free(msg);
+ }
+
+ free(fm.actions);
+}
+
static void
do_xlate_actions(const union ofp_action *in, size_t n_in,
struct action_xlate_ctx *ctx)
naor = (const struct nx_action_output_reg *) ia;
xlate_output_reg_action(ctx, naor);
break;
+
+ case OFPUTIL_NXAST_LEARN:
+ ctx->has_learn = true;
+ if (ctx->may_learn) {
+ xlate_learn_action(ctx, (const struct nx_action_learn *) ia);
+ }
+ break;
}
}
}
ctx->ofproto = ofproto;
ctx->flow = *flow;
ctx->packet = packet;
+ ctx->may_learn = packet != NULL;
ctx->resubmit_hook = NULL;
}
ctx->odp_actions = ofpbuf_new(512);
ctx->tags = 0;
ctx->may_set_up_flow = true;
+ ctx->has_learn = false;
+ ctx->has_normal = false;
ctx->nf_output_iface = NF_OUT_DROP;
ctx->recurse = 0;
ctx->priority = 0;
ctx->base_priority = 0;
ctx->base_flow = ctx->flow;
+ ctx->base_flow.tun_id = 0;
ctx->table_id = 0;
if (process_special(ctx->ofproto, &ctx->flow, ctx->packet)) {
}
if (dst->vlan != cur_vlan) {
if (dst->vlan == OFP_VLAN_NONE) {
- nl_msg_put_flag(ctx->odp_actions, OVS_ACTION_ATTR_STRIP_VLAN);
+ nl_msg_put_flag(ctx->odp_actions, OVS_ACTION_ATTR_POP_VLAN);
} else {
ovs_be16 tci;
+
+ if (cur_vlan != OFP_VLAN_NONE) {
+ nl_msg_put_flag(ctx->odp_actions, OVS_ACTION_ATTR_POP_VLAN);
+ }
tci = htons(dst->vlan & VLAN_VID_MASK);
tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
nl_msg_put_be16(ctx->odp_actions,
- OVS_ACTION_ATTR_SET_DL_TCI, tci);
+ OVS_ACTION_ATTR_PUSH_VLAN, tci);
}
cur_vlan = dst->vlan;
}
"port %"PRIu16,
ofproto->up.name, flow->in_port);
}
+ *vlanp = -1;
return false;
}
*vlanp = vlan = flow_get_vlan(ofproto, flow, in_bundle, have_packet);
struct mac_entry *mac;
int vlan;
+ ctx->has_normal = true;
+
/* Check whether we should drop packets in this flow. */
if (!is_admissible(ctx->ofproto, &ctx->flow, ctx->packet != NULL,
&ctx->tags, &vlan, &in_bundle)) {
goto done;
}
- /* Learn source MAC (but don't try to learn from revalidation). */
- if (ctx->packet) {
+ /* Learn source MAC. */
+ if (ctx->may_learn) {
update_learning_table(ctx->ofproto, &ctx->flow, vlan, in_bundle);
}
arg1 = strtok_r(NULL, " ", &save_ptr);
arg2 = strtok_r(NULL, " ", &save_ptr);
arg3 = strtok_r(NULL, "", &save_ptr); /* Get entire rest of line. */
- if (dpname && arg1 && !arg2 && !arg3) {
- /* ofproto/trace dpname flow */
+ if (dpname && arg1 && (!arg2 || !strcmp(arg2, "-generate")) && !arg3) {
+ /* ofproto/trace dpname flow [-generate] */
int error;
/* Convert string to datapath key. */
unixctl_command_reply(conn, 501, "Invalid flow");
goto exit;
}
+
+ /* Generate a packet, if requested. */
+ if (arg2) {
+ packet = ofpbuf_new(0);
+ flow_compose(packet, &flow);
+ }
} else if (dpname && arg1 && arg2 && arg3) {
/* ofproto/trace dpname tun_id in_port packet */
uint16_t in_port;
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