/* Upcalls. */
#define FLOW_MISS_MAX_BATCH 50
-static void handle_upcall(struct ofproto_dpif *, struct dpif_upcall *);
-static void handle_miss_upcalls(struct ofproto_dpif *,
- struct dpif_upcall *, size_t n);
+static int handle_upcalls(struct ofproto_dpif *, unsigned int max_batch);
/* Flow expiration. */
static int expire(struct ofproto_dpif *);
run(struct ofproto *ofproto_)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
- struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
struct ofport_dpif *ofport;
struct ofbundle *bundle;
- size_t n_misses;
- int i;
+ unsigned int work;
if (!clogged) {
complete_operations(ofproto);
}
dpif_run(ofproto->dpif);
- n_misses = 0;
- for (i = 0; i < FLOW_MISS_MAX_BATCH; i++) {
- struct dpif_upcall *upcall = &misses[n_misses];
- int error;
-
- error = dpif_recv(ofproto->dpif, upcall);
- if (error) {
- if (error == ENODEV && n_misses == 0) {
- return error;
- }
+ /* Handle one or more batches of upcalls, until there's nothing left to do
+ * or until we do a fixed total amount of work.
+ *
+ * We do work in batches because it can be much cheaper to set up a number
+ * of flows and fire off their patches all at once. We do multiple batches
+ * because in some cases handling a packet can cause another packet to be
+ * queued almost immediately as part of the return flow. Both
+ * optimizations can make major improvements on some benchmarks and
+ * presumably for real traffic as well. */
+ work = 0;
+ while (work < FLOW_MISS_MAX_BATCH) {
+ int retval = handle_upcalls(ofproto, FLOW_MISS_MAX_BATCH - work);
+ if (retval < 0) {
+ return -retval;
+ } else if (!retval) {
break;
- }
-
- if (upcall->type == DPIF_UC_MISS) {
- /* Handle it later. */
- n_misses++;
} else {
- handle_upcall(ofproto, upcall);
+ work += retval;
}
}
- handle_miss_upcalls(ofproto, misses, n_misses);
-
if (timer_expired(&ofproto->next_expiration)) {
int delay = expire(ofproto);
timer_set_duration(&ofproto->next_expiration, delay);
ofport->stp_state = state;
ofport->stp_state_entered = time_msec();
- if (fwd_change) {
+ if (fwd_change && ofport->bundle) {
bundle_update(ofport->bundle);
}
s->state = stp_port_get_state(sp);
s->sec_in_state = (time_msec() - ofport->stp_state_entered) / 1000;
s->role = stp_port_get_role(sp);
+ stp_port_get_counts(sp, &s->tx_count, &s->rx_count, &s->error_count);
return 0;
}
}
}
-static void
-handle_upcall(struct ofproto_dpif *ofproto, struct dpif_upcall *upcall)
+static int
+handle_upcalls(struct ofproto_dpif *ofproto, unsigned int max_batch)
{
- switch (upcall->type) {
- case DPIF_UC_ACTION:
- handle_userspace_upcall(ofproto, upcall);
- break;
+ struct dpif_upcall misses[FLOW_MISS_MAX_BATCH];
+ int n_misses;
+ int i;
- case DPIF_UC_MISS:
- /* The caller handles these. */
- NOT_REACHED();
+ assert (max_batch <= FLOW_MISS_MAX_BATCH);
- case DPIF_N_UC_TYPES:
- default:
- VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32, upcall->type);
- break;
+ n_misses = 0;
+ for (i = 0; i < max_batch; i++) {
+ struct dpif_upcall *upcall = &misses[n_misses];
+ int error;
+
+ error = dpif_recv(ofproto->dpif, upcall);
+ if (error) {
+ if (error == ENODEV && n_misses == 0) {
+ return -ENODEV;
+ }
+ break;
+ }
+
+ switch (upcall->type) {
+ case DPIF_UC_ACTION:
+ handle_userspace_upcall(ofproto, upcall);
+ break;
+
+ case DPIF_UC_MISS:
+ /* Handle it later. */
+ n_misses++;
+ break;
+
+ case DPIF_N_UC_TYPES:
+ default:
+ VLOG_WARN_RL(&rl, "upcall has unexpected type %"PRIu32,
+ upcall->type);
+ break;
+ }
}
+
+ handle_miss_upcalls(ofproto, misses, n_misses);
+
+ return i;
}
\f
/* Flow expiration. */
}
}
+static void
+compose_dst_output_action(struct action_xlate_ctx *ctx, const struct dst *dst)
+{
+ ovs_be16 tci;
+
+ tci = htons(dst->vid);
+ if (tci) {
+ tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
+ tci |= htons(VLAN_CFI);
+ }
+ commit_vlan_action(ctx, tci);
+
+ compose_output_action(ctx, dst->port->odp_port);
+}
+
static void
compose_actions(struct action_xlate_ctx *ctx, uint16_t vlan,
const struct ofbundle *in_bundle,
const struct ofbundle *out_bundle)
{
- uint16_t initial_vid, cur_vid;
+ uint16_t initial_vid;
const struct dst *dst;
struct dst_set set;
commit_odp_actions(ctx);
initial_vid = vlan_tci_to_vid(ctx->flow.vlan_tci);
for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
- if (dst->vid != initial_vid) {
- continue;
+ if (dst->vid == initial_vid) {
+ compose_dst_output_action(ctx, dst);
}
- compose_output_action(ctx, dst->port->odp_port);
}
/* Then output the rest. */
- cur_vid = initial_vid;
for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
- if (dst->vid == initial_vid) {
- continue;
- }
- if (dst->vid != cur_vid) {
- ovs_be16 tci;
-
- tci = htons(dst->vid);
- tci |= ctx->flow.vlan_tci & htons(VLAN_PCP_MASK);
- if (tci) {
- tci |= htons(VLAN_CFI);
- }
- commit_vlan_action(ctx, tci);
-
- cur_vid = dst->vid;
+ if (dst->vid != initial_vid) {
+ compose_dst_output_action(ctx, dst);
}
- compose_output_action(ctx, dst->port->odp_port);
}
dst_set_free(&set);
git://git.onelab.eu / sliver-openvswitch.git / blobdiff