static bool
stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc)
{
+ /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */
memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst);
- return eth_addr_equals(flow->dl_dst, eth_addr_stp);
+ return is_stp(flow);
}
static void
xlate_report(ctx, "OFPPC_NO_FWD set, skipping output");
return;
} else if (check_stp) {
- if (eth_addr_equals(ctx->base_flow.dl_dst, eth_addr_stp)) {
+ if (is_stp(&ctx->base_flow)) {
if (!xport_stp_listen_state(xport)) {
xlate_report(ctx, "STP not in listening state, "
"skipping bpdu output");
xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule)
{
struct rule_dpif *old_rule = ctx->rule;
- struct rule_actions *actions;
+ const struct rule_actions *actions;
if (ctx->xin->resubmit_stats) {
rule_dpif_credit_stats(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 = rule;
- rule_dpif_ref(rule);
- }
ctx->resubmits++;
ctx->recurse++;
!skip_wildcards
? &ctx->xout->wc : NULL,
honor_table_miss,
- &ctx->table_id, &rule, true);
+ &ctx->table_id, &rule,
+ ctx->xin->xcache != NULL);
ctx->xin->flow.in_port.ofp_port = old_in_port;
if (ctx->xin->resubmit_hook) {
}
choose_miss_rule(config, ctx->xbridge->miss_rule,
- ctx->xbridge->no_packet_in_rule, &rule, true);
+ 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
+ * reference in the lookups above if we are going to cache the
+ * rule. */
+ if (ctx->xin->xcache) {
+ struct xc_entry *entry;
+
+ entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE);
+ entry->u.rule = rule;
+ }
xlate_recursively(ctx, rule);
- rule_dpif_unref(rule);
}
ctx->table_id = old_table_id;
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);
}
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;
- rule_dpif_ref(ctx->rule);
}
}
}
static bool
may_receive(const struct xport *xport, struct xlate_ctx *ctx)
{
- if (xport->config & (eth_addr_equals(ctx->xin->flow.dl_dst, eth_addr_stp)
+ if (xport->config & (is_stp(&ctx->xin->flow)
? OFPUTIL_PC_NO_RECV_STP
: OFPUTIL_PC_NO_RECV)) {
return false;
struct flow *flow = &xin->flow;
struct rule_dpif *rule = NULL;
- struct rule_actions *actions = NULL;
+ const struct rule_actions *actions = NULL;
enum slow_path_reason special;
const struct ofpact *ofpacts;
struct xport *in_port;
ctx.xbridge = xbridge_lookup(xin->ofproto);
if (!ctx.xbridge) {
- goto out;
+ return;
}
ctx.rule = xin->rule;
if (!xin->ofpacts && !ctx.rule) {
ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow,
!xin->skip_wildcards ? wc : NULL,
- &rule, true);
+ &rule, ctx.xin->xcache != NULL);
if (ctx.xin->resubmit_stats) {
rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats);
}
struct xc_entry *entry;
entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE);
- rule_dpif_ref(rule);
entry->u.rule = rule;
}
ctx.rule = rule;
break;
case OFPC_FRAG_DROP:
- goto out;
+ return;
case OFPC_FRAG_REASM:
OVS_NOT_REACHED();
wc->masks.tp_src &= htons(UINT8_MAX);
wc->masks.tp_dst &= htons(UINT8_MAX);
}
-
-out:
- rule_dpif_unref(rule);
}
/* Sends 'packet' out 'ofport'.
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 wehave cached, update the reference that we have. */
- entry->u.learn.rule = ofproto_dpif_refresh_rule(rule);
+ * 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);
}
break;
case XC_NORMAL:
mbridge_unref(entry->u.mirror.mbridge);
break;
case XC_LEARN:
+ /* 'u.learn.rule' is the learned rule. */
rule_dpif_unref(entry->u.learn.rule);
break;
case XC_NORMAL:
free(entry->u.normal.flow);
break;
case XC_FIN_TIMEOUT:
- rule_dpif_unref(entry->u.fin.rule);
+ /* 'u.fin.rule' is always already held as a XC_RULE, which
+ * has already released it's reference above. */
break;
default:
OVS_NOT_REACHED();