* "struct bond" has an array of BOND_BUCKETS of these. */
struct bond_entry {
struct bond_slave *slave; /* Assigned slave, NULL if unassigned. */
- uint64_t tx_bytes; /* Count of bytes recently transmitted. */
+ uint64_t tx_bytes /* Count of bytes recently transmitted. */
+ OVS_GUARDED_BY(rwlock);
struct list list_node; /* In bond_slave's 'entries' list. */
- /* Recirculation. */
- struct rule *pr_rule; /* Post recirculation rule for this entry.*/
- uint64_t pr_tx_bytes; /* Record the rule tx_bytes to figure out
- the delta to update the tx_bytes entry
- above.*/
+ /* Recirculation.
+ *
+ * 'pr_rule' is the post-recirculation rule for this entry.
+ * 'pr_tx_bytes' is the most recently seen statistics for 'pr_rule', which
+ * is used to determine delta (applied to 'tx_bytes' above.) */
+ struct rule *pr_rule;
+ uint64_t pr_tx_bytes OVS_GUARDED_BY(rwlock);
};
/* A bond slave, that is, one of the links comprising a bond. */
struct match match;
ofp_port_t out_ofport;
enum bond_op op;
- struct rule *pr_rule;
+ struct rule **pr_rule;
};
static void bond_entry_reset(struct bond *) OVS_REQ_WRLOCK(rwlock);
static void
add_pr_rule(struct bond *bond, const struct match *match,
- ofp_port_t out_ofport, struct rule *rule)
+ ofp_port_t out_ofport, struct rule **rule)
{
uint32_t hash = match_hash(match, 0);
struct bond_pr_rule_op *pr_op;
pr_op->op = DEL;
}
- if ((bond->hash == NULL) || (!bond->recirc_id)) {
- return;
- }
-
- for (i = 0; i < BOND_BUCKETS; i++) {
- struct bond_slave *slave = bond->hash[i].slave;
+ if (bond->hash && bond->recirc_id) {
+ for (i = 0; i < BOND_BUCKETS; i++) {
+ struct bond_slave *slave = bond->hash[i].slave;
- if (slave) {
- match_init_catchall(&match);
- match_set_recirc_id(&match, bond->recirc_id);
- /* recirc_id -> metadata to speed up look ups. */
- match_set_metadata(&match, htonll(bond->recirc_id));
- match_set_dp_hash_masked(&match, i, BOND_MASK);
+ if (slave) {
+ match_init_catchall(&match);
+ match_set_recirc_id(&match, bond->recirc_id);
+ match_set_dp_hash_masked(&match, i, BOND_MASK);
- add_pr_rule(bond, &match, slave->ofp_port,
- bond->hash[i].pr_rule);
+ add_pr_rule(bond, &match, slave->ofp_port,
+ &bond->hash[i].pr_rule);
+ }
}
}
HMAP_FOR_EACH_SAFE(pr_op, next_op, hmap_node, &bond->pr_rule_ops) {
int error;
- struct rule *rule;
switch (pr_op->op) {
case ADD:
ofpbuf_clear(&ofpacts);
error = ofproto_dpif_add_internal_flow(bond->ofproto,
&pr_op->match,
RECIRC_RULE_PRIORITY,
- &ofpacts, &rule);
+ &ofpacts, pr_op->pr_rule);
if (error) {
char *err_s = match_to_string(&pr_op->match,
RECIRC_RULE_PRIORITY);
VLOG_ERR("failed to add post recirculation flow %s", err_s);
free(err_s);
- pr_op->pr_rule = NULL;
- } else {
- pr_op->pr_rule = rule;
}
break;
}
hmap_remove(&bond->pr_rule_ops, &pr_op->hmap_node);
- pr_op->pr_rule = NULL;
+ *pr_op->pr_rule = NULL;
free(pr_op);
break;
}
/* Recirculation. */
static void
bond_entry_account(struct bond_entry *entry, uint64_t rule_tx_bytes)
- OVS_REQ_RDLOCK(rwlock)
+ OVS_REQ_WRLOCK(rwlock)
{
if (entry->slave) {
uint64_t delta;
{
int i;
- ovs_rwlock_rdlock(&rwlock);
+ ovs_rwlock_wrlock(&rwlock);
for (i=0; i<=BOND_MASK; i++) {
struct bond_entry *entry = &bond->hash[i];
struct rule *rule = entry->pr_rule;
static void
log_bals(struct bond *bond, const struct list *bals)
+ OVS_REQ_RDLOCK(rwlock)
{
if (VLOG_IS_DBG_ENABLED()) {
struct ds ds = DS_EMPTY_INITIALIZER;
/* Shifts 'hash' from its current slave to 'to'. */
static void
bond_shift_load(struct bond_entry *hash, struct bond_slave *to)
+ OVS_REQ_WRLOCK(rwlock)
{
struct bond_slave *from = hash->slave;
struct bond *bond = from->bond;
* shift away small hashes or large hashes. */
static struct bond_entry *
choose_entry_to_migrate(const struct bond_slave *from, uint64_t to_tx_bytes)
+ OVS_REQ_WRLOCK(rwlock)
{
struct bond_entry *e;
* take 20 rebalancing runs to decay to 0 and get deleted entirely. */
for (e = &bond->hash[0]; e <= &bond->hash[BOND_MASK]; e++) {
e->tx_bytes /= 2;
- if (!e->tx_bytes) {
- e->slave = NULL;
- }
}
done:
/* Hashes. */
for (be = bond->hash; be <= &bond->hash[BOND_MASK]; be++) {
int hash = be - bond->hash;
+ uint64_t be_tx_k;
if (be->slave != slave) {
continue;
}
- ds_put_format(ds, "\thash %d: %"PRIu64" kB load\n",
- hash, be->tx_bytes / 1024);
+ be_tx_k = be->tx_bytes / 1024;
+ if (be_tx_k) {
+ ds_put_format(ds, "\thash %d: %"PRIu64" kB load\n",
+ hash, be_tx_k);
+ }
/* XXX How can we list the MACs assigned to hashes of SLB bonds? */
}