/*
- * Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* OVS_USERSPACE_ATTR_USERDATA in OVS_ACTION_ATTR_USERSPACE actions.
* False if the datapath supports only 8-byte (or shorter) userdata. */
bool variable_length_userdata;
+
+ /* Maximum number of MPLS label stack entries that the datapath supports
+ * in a match */
+ size_t max_mpls_depth;
};
/* All existing ofproto_backer instances, indexed by ofproto->up.type. */
return CONTAINER_OF(ofproto, struct ofproto_dpif, up);
}
+size_t
+ofproto_dpif_get_max_mpls_depth(const struct ofproto_dpif *ofproto)
+{
+ return ofproto->backer->max_mpls_depth;
+}
+
static struct ofport_dpif *get_ofp_port(const struct ofproto_dpif *ofproto,
ofp_port_t ofp_port);
static void ofproto_trace(struct ofproto_dpif *, const struct flow *,
ofproto->netflow, ofproto->up.frag_handling,
ofproto->up.forward_bpdu,
connmgr_has_in_band(ofproto->up.connmgr),
- ofproto->backer->variable_length_userdata);
+ ofproto->backer->variable_length_userdata,
+ ofproto->backer->max_mpls_depth);
HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
xlate_bundle_set(ofproto, bundle, bundle->name,
};
static bool check_variable_length_userdata(struct dpif_backer *backer);
+static size_t check_max_mpls_depth(struct dpif_backer *backer);
static int
open_dpif_backer(const char *type, struct dpif_backer **backerp)
return error;
}
backer->variable_length_userdata = check_variable_length_userdata(backer);
+ backer->max_mpls_depth = check_max_mpls_depth(backer);
if (backer->recv_set_enable) {
udpif_set_threads(backer->udpif, n_handlers, n_revalidators);
}
}
+/* Tests the MPLS label stack depth supported by 'backer''s datapath.
+ *
+ * Returns the number of elements in a struct flow's mpls_lse field
+ * if the datapath supports at least that many entries in an
+ * MPLS label stack.
+ * Otherwise returns the number of MPLS push actions supported by
+ * the datapath. */
+static size_t
+check_max_mpls_depth(struct dpif_backer *backer)
+{
+ struct flow flow;
+ int n;
+
+ for (n = 0; n < FLOW_MAX_MPLS_LABELS; n++) {
+ struct odputil_keybuf keybuf;
+ struct ofpbuf key;
+ int error;
+
+ memset(&flow, 0, sizeof flow);
+ flow.dl_type = htons(ETH_TYPE_MPLS);
+ flow_set_mpls_bos(&flow, n, 1);
+
+ ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
+ odp_flow_key_from_flow(&key, &flow, 0);
+
+ error = dpif_flow_put(backer->dpif, DPIF_FP_CREATE | DPIF_FP_MODIFY,
+ key.data, key.size, NULL, 0, NULL, 0, NULL);
+ if (error && error != EEXIST) {
+ if (error != EINVAL) {
+ VLOG_WARN("%s: MPLS stack length feature probe failed (%s)",
+ dpif_name(backer->dpif), ovs_strerror(error));
+ }
+ break;
+ }
+
+ error = dpif_flow_del(backer->dpif, key.data, key.size, NULL);
+ if (error) {
+ VLOG_WARN("%s: failed to delete MPLS feature probe flow",
+ dpif_name(backer->dpif));
+ }
+ }
+
+ VLOG_INFO("%s: MPLS label stack length probed as %d",
+ dpif_name(backer->dpif), n);
+ return n;
+}
+
static int
construct(struct ofproto *ofproto_)
{
OFPROTO_FOR_EACH_TABLE (table, &ofproto->up) {
struct cls_cursor cursor;
- ovs_rwlock_rdlock(&table->cls.rwlock);
+ fat_rwlock_rdlock(&table->cls.rwlock);
cls_cursor_init(&cursor, &table->cls, NULL);
- ovs_rwlock_unlock(&table->cls.rwlock);
+ fat_rwlock_unlock(&table->cls.rwlock);
CLS_CURSOR_FOR_EACH_SAFE (rule, next_rule, up.cr, &cursor) {
ofproto_rule_delete(&ofproto->up, &rule->up);
}
if (wc) {
memset(&wc->masks.dl_type, 0xff, sizeof wc->masks.dl_type);
- wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
+ if (is_ip_any(flow)) {
+ wc->masks.nw_frag |= FLOW_NW_FRAG_MASK;
+ }
}
cls = &ofproto->up.tables[table_id].cls;
- ovs_rwlock_rdlock(&cls->rwlock);
+ fat_rwlock_rdlock(&cls->rwlock);
frag = (flow->nw_frag & FLOW_NW_FRAG_ANY) != 0;
if (frag && ofproto->up.frag_handling == OFPC_FRAG_NORMAL) {
/* We must pretend that transport ports are unavailable. */
*rule = rule_dpif_cast(rule_from_cls_rule(cls_rule));
rule_dpif_ref(*rule);
- ovs_rwlock_unlock(&cls->rwlock);
+ fat_rwlock_unlock(&cls->rwlock);
return *rule != NULL;
}
struct xlate_out xout;
struct xlate_in xin;
struct flow flow;
+ struct flow_wildcards wc;
struct ds *result;
};
ds_put_char(result, '\n');
}
+static void
+trace_format_megaflow(struct ds *result, int level, const char *title,
+ struct trace_ctx *trace)
+{
+ struct match match;
+
+ ds_put_char_multiple(result, '\t', level);
+ ds_put_format(result, "%s: ", title);
+ flow_wildcards_or(&trace->wc, &trace->xout.wc, &trace->wc);
+ match_init(&match, &trace->flow, &trace->wc);
+ match_format(&match, result, OFP_DEFAULT_PRIORITY);
+ ds_put_char(result, '\n');
+}
+
static void
trace_resubmit(struct xlate_in *xin, struct rule_dpif *rule, int recurse)
{
trace_format_flow(result, recurse + 1, "Resubmitted flow", trace);
trace_format_regs(result, recurse + 1, "Resubmitted regs", trace);
trace_format_odp(result, recurse + 1, "Resubmitted odp", trace);
+ trace_format_megaflow(result, recurse + 1, "Resubmitted megaflow", trace);
trace_format_rule(result, recurse + 1, rule);
}
}
if (xlate_receive(backer, NULL, odp_key.data, odp_key.size, flow,
- NULL, ofprotop, NULL, NULL, NULL, NULL)) {
+ ofprotop, NULL, NULL, NULL, NULL)) {
error = "Invalid datapath flow";
goto exit;
}
struct ds *ds)
{
struct rule_dpif *rule;
- struct flow_wildcards wc;
+ struct trace_ctx trace;
ds_put_format(ds, "Bridge: %s\n", ofproto->up.name);
ds_put_cstr(ds, "Flow: ");
flow_format(ds, flow);
ds_put_char(ds, '\n');
- flow_wildcards_init_catchall(&wc);
+ flow_wildcards_init_catchall(&trace.wc);
if (ofpacts) {
rule = NULL;
} else {
- rule_dpif_lookup(ofproto, flow, &wc, &rule);
+ rule_dpif_lookup(ofproto, flow, &trace.wc, &rule);
trace_format_rule(ds, 0, rule);
if (rule == ofproto->miss_rule) {
}
if (rule || ofpacts) {
- struct trace_ctx trace;
- struct match match;
uint16_t tcp_flags;
tcp_flags = packet ? packet_get_tcp_flags(packet, flow) : 0;
trace.xin.report_hook = trace_report;
xlate_actions(&trace.xin, &trace.xout);
- flow_wildcards_or(&trace.xout.wc, &trace.xout.wc, &wc);
ds_put_char(ds, '\n');
trace_format_flow(ds, 0, "Final flow", &trace);
-
- match_init(&match, &trace.flow, &trace.xout.wc);
- ds_put_cstr(ds, "Relevant fields: ");
- match_format(&match, ds, OFP_DEFAULT_PRIORITY);
- ds_put_char(ds, '\n');
+ trace_format_megaflow(ds, 0, "Megaflow", &trace);
ds_put_cstr(ds, "Datapath actions: ");
format_odp_actions(ds, trace.xout.odp_actions.data,
ofproto_dpif_contains_flow(const struct ofproto_dpif *ofproto,
const struct nlattr *key, size_t key_len)
{
- enum odp_key_fitness fitness;
struct ofproto_dpif *ofp;
struct flow flow;
- xlate_receive(ofproto->backer, NULL, key, key_len, &flow, &fitness, &ofp,
+ xlate_receive(ofproto->backer, NULL, key, key_len, &flow, &ofp,
NULL, NULL, NULL, NULL);
return ofp == ofproto;
}
ofproto_has_vlan_splinters(const struct ofproto_dpif *ofproto)
OVS_EXCLUDED(ofproto->vsp_mutex)
{
- bool ret;
-
- ovs_mutex_lock(&ofproto->vsp_mutex);
- ret = !hmap_is_empty(&ofproto->realdev_vid_map);
- ovs_mutex_unlock(&ofproto->vsp_mutex);
- return ret;
+ /* hmap_is_empty is thread safe. */
+ return !hmap_is_empty(&ofproto->realdev_vid_map);
}
static ofp_port_t
{
ofp_port_t ret;
+ /* hmap_is_empty is thread safe, see if we can return immediately. */
+ if (hmap_is_empty(&ofproto->realdev_vid_map)) {
+ return realdev_ofp_port;
+ }
ovs_mutex_lock(&ofproto->vsp_mutex);
ret = vsp_realdev_to_vlandev__(ofproto, realdev_ofp_port, vlan_tci);
ovs_mutex_unlock(&ofproto->vsp_mutex);
ofp_port_t realdev;
int vid;
+ /* hmap_is_empty is thread safe. */
+ if (hmap_is_empty(&ofproto->vlandev_map)) {
+ return false;
+ }
+
ovs_mutex_lock(&ofproto->vsp_mutex);
realdev = vsp_vlandev_to_realdev(ofproto, flow->in_port.ofp_port, &vid);
ovs_mutex_unlock(&ofproto->vsp_mutex);
git://git.onelab.eu / sliver-openvswitch.git / blobdiff