mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 00:34:10 +08:00
openvswitch: Move mega-flow list out of rehashing struct.
ovs-flow rehash does not touch mega flow list. Following patch moves it dp struct datapath. Avoid one extra indirection for accessing mega-flow list head on every packet receive. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar
Jesse Gross
parent
e64457191a
commit
b637e4988c
@ -59,8 +59,6 @@
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#include "vport-internal_dev.h"
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#include "vport-netdev.h"
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#define REHASH_FLOW_INTERVAL (10 * 60 * HZ)
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int ovs_net_id __read_mostly;
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static void ovs_notify(struct sk_buff *skb, struct genl_info *info,
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@ -163,7 +161,7 @@ static void destroy_dp_rcu(struct rcu_head *rcu)
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{
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struct datapath *dp = container_of(rcu, struct datapath, rcu);
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ovs_flow_tbl_destroy((__force struct flow_table *)dp->table, false);
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ovs_flow_tbl_destroy(&dp->table, false);
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free_percpu(dp->stats_percpu);
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release_net(ovs_dp_get_net(dp));
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kfree(dp->ports);
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@ -235,7 +233,7 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
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}
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/* Look up flow. */
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flow = ovs_flow_tbl_lookup(rcu_dereference(dp->table), &key);
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flow = ovs_flow_tbl_lookup(&dp->table, &key);
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if (unlikely(!flow)) {
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struct dp_upcall_info upcall;
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@ -453,23 +451,6 @@ out:
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return err;
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}
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/* Called with ovs_mutex. */
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static int flush_flows(struct datapath *dp)
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{
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struct flow_table *old_table;
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struct flow_table *new_table;
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old_table = ovsl_dereference(dp->table);
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new_table = ovs_flow_tbl_alloc(TBL_MIN_BUCKETS);
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if (!new_table)
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return -ENOMEM;
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rcu_assign_pointer(dp->table, new_table);
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ovs_flow_tbl_destroy(old_table, true);
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return 0;
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}
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static void clear_stats(struct sw_flow *flow)
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{
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flow->used = 0;
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@ -584,11 +565,9 @@ static struct genl_ops dp_packet_genl_ops[] = {
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static void get_dp_stats(struct datapath *dp, struct ovs_dp_stats *stats)
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{
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struct flow_table *table;
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int i;
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table = rcu_dereference_check(dp->table, lockdep_ovsl_is_held());
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stats->n_flows = ovs_flow_tbl_count(table);
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stats->n_flows = ovs_flow_tbl_count(&dp->table);
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stats->n_hit = stats->n_missed = stats->n_lost = 0;
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for_each_possible_cpu(i) {
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@ -773,7 +752,6 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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struct sw_flow_mask mask;
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struct sk_buff *reply;
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struct datapath *dp;
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struct flow_table *table;
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struct sw_flow_actions *acts = NULL;
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struct sw_flow_match match;
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int error;
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@ -814,12 +792,9 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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if (!dp)
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goto err_unlock_ovs;
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table = ovsl_dereference(dp->table);
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/* Check if this is a duplicate flow */
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flow = ovs_flow_tbl_lookup(table, &key);
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flow = ovs_flow_tbl_lookup(&dp->table, &key);
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if (!flow) {
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struct flow_table *new_table = NULL;
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struct sw_flow_mask *mask_p;
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/* Bail out if we're not allowed to create a new flow. */
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@ -827,19 +802,6 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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if (info->genlhdr->cmd == OVS_FLOW_CMD_SET)
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goto err_unlock_ovs;
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/* Expand table, if necessary, to make room. */
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if (ovs_flow_tbl_need_to_expand(table))
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new_table = ovs_flow_tbl_expand(table);
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else if (time_after(jiffies, dp->last_rehash + REHASH_FLOW_INTERVAL))
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new_table = ovs_flow_tbl_rehash(table);
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if (new_table && !IS_ERR(new_table)) {
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rcu_assign_pointer(dp->table, new_table);
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ovs_flow_tbl_destroy(table, true);
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table = ovsl_dereference(dp->table);
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dp->last_rehash = jiffies;
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}
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/* Allocate flow. */
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flow = ovs_flow_alloc();
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if (IS_ERR(flow)) {
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@ -852,7 +814,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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flow->unmasked_key = key;
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/* Make sure mask is unique in the system */
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mask_p = ovs_sw_flow_mask_find(table, &mask);
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mask_p = ovs_sw_flow_mask_find(&dp->table, &mask);
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if (!mask_p) {
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/* Allocate a new mask if none exsits. */
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mask_p = ovs_sw_flow_mask_alloc();
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@ -860,7 +822,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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goto err_flow_free;
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mask_p->key = mask.key;
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mask_p->range = mask.range;
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ovs_sw_flow_mask_insert(table, mask_p);
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ovs_sw_flow_mask_insert(&dp->table, mask_p);
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}
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ovs_sw_flow_mask_add_ref(mask_p);
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@ -868,7 +830,7 @@ static int ovs_flow_cmd_new_or_set(struct sk_buff *skb, struct genl_info *info)
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rcu_assign_pointer(flow->sf_acts, acts);
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/* Put flow in bucket. */
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ovs_flow_tbl_insert(table, flow);
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ovs_flow_tbl_insert(&dp->table, flow);
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reply = ovs_flow_cmd_build_info(flow, dp, info->snd_portid,
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info->snd_seq, OVS_FLOW_CMD_NEW);
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@ -936,7 +898,6 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
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struct sk_buff *reply;
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struct sw_flow *flow;
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struct datapath *dp;
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struct flow_table *table;
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struct sw_flow_match match;
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int err;
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@ -957,8 +918,7 @@ static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
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goto unlock;
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}
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table = ovsl_dereference(dp->table);
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flow = ovs_flow_tbl_lookup(table, &key);
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flow = ovs_flow_tbl_lookup(&dp->table, &key);
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if (!flow || !ovs_flow_cmp_unmasked_key(flow, &match)) {
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err = -ENOENT;
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goto unlock;
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@ -986,7 +946,6 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
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struct sk_buff *reply;
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struct sw_flow *flow;
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struct datapath *dp;
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struct flow_table *table;
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struct sw_flow_match match;
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int err;
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@ -998,7 +957,7 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
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}
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if (!a[OVS_FLOW_ATTR_KEY]) {
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err = flush_flows(dp);
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err = ovs_flow_tbl_flush(&dp->table);
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goto unlock;
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}
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@ -1007,8 +966,7 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
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if (err)
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goto unlock;
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table = ovsl_dereference(dp->table);
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flow = ovs_flow_tbl_lookup(table, &key);
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flow = ovs_flow_tbl_lookup(&dp->table, &key);
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if (!flow || !ovs_flow_cmp_unmasked_key(flow, &match)) {
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err = -ENOENT;
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goto unlock;
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@ -1020,7 +978,7 @@ static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
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goto unlock;
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}
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ovs_flow_tbl_remove(table, flow);
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ovs_flow_tbl_remove(&dp->table, flow);
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err = ovs_flow_cmd_fill_info(flow, dp, reply, info->snd_portid,
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info->snd_seq, 0, OVS_FLOW_CMD_DEL);
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@ -1039,8 +997,8 @@ unlock:
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static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
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{
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struct ovs_header *ovs_header = genlmsg_data(nlmsg_data(cb->nlh));
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struct table_instance *ti;
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struct datapath *dp;
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struct flow_table *table;
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rcu_read_lock();
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dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
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@ -1049,14 +1007,14 @@ static int ovs_flow_cmd_dump(struct sk_buff *skb, struct netlink_callback *cb)
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return -ENODEV;
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}
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table = rcu_dereference(dp->table);
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ti = rcu_dereference(dp->table.ti);
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for (;;) {
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struct sw_flow *flow;
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u32 bucket, obj;
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bucket = cb->args[0];
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obj = cb->args[1];
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flow = ovs_flow_tbl_dump_next(table, &bucket, &obj);
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flow = ovs_flow_tbl_dump_next(ti, &bucket, &obj);
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if (!flow)
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break;
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@ -1220,9 +1178,8 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
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ovs_dp_set_net(dp, hold_net(sock_net(skb->sk)));
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/* Allocate table. */
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err = -ENOMEM;
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rcu_assign_pointer(dp->table, ovs_flow_tbl_alloc(TBL_MIN_BUCKETS));
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if (!dp->table)
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err = ovs_flow_tbl_init(&dp->table);
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if (err)
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goto err_free_dp;
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dp->stats_percpu = alloc_percpu(struct dp_stats_percpu);
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@ -1279,7 +1236,7 @@ err_destroy_ports_array:
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err_destroy_percpu:
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free_percpu(dp->stats_percpu);
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err_destroy_table:
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ovs_flow_tbl_destroy(ovsl_dereference(dp->table), false);
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ovs_flow_tbl_destroy(&dp->table, false);
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err_free_dp:
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release_net(ovs_dp_get_net(dp));
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kfree(dp);
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@ -58,12 +58,11 @@ struct dp_stats_percpu {
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* struct datapath - datapath for flow-based packet switching
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* @rcu: RCU callback head for deferred destruction.
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* @list_node: Element in global 'dps' list.
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* @table: Current flow table. Protected by ovs_mutex and RCU.
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* @table: flow table.
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* @ports: Hash table for ports. %OVSP_LOCAL port always exists. Protected by
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* ovs_mutex and RCU.
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* @stats_percpu: Per-CPU datapath statistics.
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* @net: Reference to net namespace.
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* @last_rehash: Timestamp of last rehash.
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*
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* Context: See the comment on locking at the top of datapath.c for additional
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* locking information.
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@ -73,7 +72,7 @@ struct datapath {
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struct list_head list_node;
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/* Flow table. */
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struct flow_table __rcu *table;
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struct flow_table table;
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/* Switch ports. */
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struct hlist_head *ports;
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@ -85,7 +84,6 @@ struct datapath {
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/* Network namespace ref. */
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struct net *net;
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#endif
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unsigned long last_rehash;
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};
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/**
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@ -44,6 +44,11 @@
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#include <net/ipv6.h>
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#include <net/ndisc.h>
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#include "datapath.h"
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#define TBL_MIN_BUCKETS 1024
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#define REHASH_INTERVAL (10 * 60 * HZ)
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static struct kmem_cache *flow_cache;
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static u16 range_n_bytes(const struct sw_flow_key_range *range)
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@ -82,6 +87,11 @@ struct sw_flow *ovs_flow_alloc(void)
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return flow;
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}
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int ovs_flow_tbl_count(struct flow_table *table)
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{
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return table->count;
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}
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static struct flex_array *alloc_buckets(unsigned int n_buckets)
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{
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struct flex_array *buckets;
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@ -136,18 +146,18 @@ static void free_buckets(struct flex_array *buckets)
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flex_array_free(buckets);
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}
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static void __flow_tbl_destroy(struct flow_table *table)
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static void __table_instance_destroy(struct table_instance *ti)
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{
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int i;
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if (table->keep_flows)
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if (ti->keep_flows)
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goto skip_flows;
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for (i = 0; i < table->n_buckets; i++) {
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for (i = 0; i < ti->n_buckets; i++) {
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struct sw_flow *flow;
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struct hlist_head *head = flex_array_get(table->buckets, i);
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struct hlist_head *head = flex_array_get(ti->buckets, i);
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struct hlist_node *n;
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int ver = table->node_ver;
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int ver = ti->node_ver;
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hlist_for_each_entry_safe(flow, n, head, hash_node[ver]) {
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hlist_del(&flow->hash_node[ver]);
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@ -155,74 +165,74 @@ static void __flow_tbl_destroy(struct flow_table *table)
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}
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}
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BUG_ON(!list_empty(table->mask_list));
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kfree(table->mask_list);
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skip_flows:
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free_buckets(table->buckets);
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kfree(table);
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free_buckets(ti->buckets);
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kfree(ti);
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}
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static struct flow_table *__flow_tbl_alloc(int new_size)
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static struct table_instance *table_instance_alloc(int new_size)
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{
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struct flow_table *table = kmalloc(sizeof(*table), GFP_KERNEL);
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struct table_instance *ti = kmalloc(sizeof(*ti), GFP_KERNEL);
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if (!table)
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if (!ti)
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return NULL;
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table->buckets = alloc_buckets(new_size);
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ti->buckets = alloc_buckets(new_size);
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if (!table->buckets) {
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kfree(table);
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if (!ti->buckets) {
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kfree(ti);
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return NULL;
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}
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table->n_buckets = new_size;
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ti->n_buckets = new_size;
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ti->node_ver = 0;
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ti->keep_flows = false;
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get_random_bytes(&ti->hash_seed, sizeof(u32));
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return ti;
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}
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int ovs_flow_tbl_init(struct flow_table *table)
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{
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struct table_instance *ti;
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ti = table_instance_alloc(TBL_MIN_BUCKETS);
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if (!ti)
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return -ENOMEM;
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rcu_assign_pointer(table->ti, ti);
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INIT_LIST_HEAD(&table->mask_list);
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table->last_rehash = jiffies;
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table->count = 0;
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table->node_ver = 0;
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table->keep_flows = false;
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get_random_bytes(&table->hash_seed, sizeof(u32));
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table->mask_list = NULL;
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return table;
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}
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struct flow_table *ovs_flow_tbl_alloc(int new_size)
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{
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struct flow_table *table = __flow_tbl_alloc(new_size);
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if (!table)
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return NULL;
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table->mask_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
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if (!table->mask_list) {
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table->keep_flows = true;
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__flow_tbl_destroy(table);
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return NULL;
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}
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INIT_LIST_HEAD(table->mask_list);
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return table;
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return 0;
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}
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static void flow_tbl_destroy_rcu_cb(struct rcu_head *rcu)
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{
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struct flow_table *table = container_of(rcu, struct flow_table, rcu);
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struct table_instance *ti = container_of(rcu, struct table_instance, rcu);
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__flow_tbl_destroy(table);
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__table_instance_destroy(ti);
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}
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static void table_instance_destroy(struct table_instance *ti, bool deferred)
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{
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if (!ti)
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return;
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if (deferred)
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call_rcu(&ti->rcu, flow_tbl_destroy_rcu_cb);
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else
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__table_instance_destroy(ti);
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}
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void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred)
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{
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if (!table)
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return;
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struct table_instance *ti = ovsl_dereference(table->ti);
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if (deferred)
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call_rcu(&table->rcu, flow_tbl_destroy_rcu_cb);
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else
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__flow_tbl_destroy(table);
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table_instance_destroy(ti, deferred);
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}
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struct sw_flow *ovs_flow_tbl_dump_next(struct flow_table *table,
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struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *ti,
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u32 *bucket, u32 *last)
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{
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struct sw_flow *flow;
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@ -230,10 +240,10 @@ struct sw_flow *ovs_flow_tbl_dump_next(struct flow_table *table,
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int ver;
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int i;
|
||||
|
||||
ver = table->node_ver;
|
||||
while (*bucket < table->n_buckets) {
|
||||
ver = ti->node_ver;
|
||||
while (*bucket < ti->n_buckets) {
|
||||
i = 0;
|
||||
head = flex_array_get(table->buckets, *bucket);
|
||||
head = flex_array_get(ti->buckets, *bucket);
|
||||
hlist_for_each_entry_rcu(flow, head, hash_node[ver]) {
|
||||
if (i < *last) {
|
||||
i++;
|
||||
@ -249,25 +259,23 @@ struct sw_flow *ovs_flow_tbl_dump_next(struct flow_table *table,
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static struct hlist_head *find_bucket(struct flow_table *table, u32 hash)
|
||||
static struct hlist_head *find_bucket(struct table_instance *ti, u32 hash)
|
||||
{
|
||||
hash = jhash_1word(hash, table->hash_seed);
|
||||
return flex_array_get(table->buckets,
|
||||
(hash & (table->n_buckets - 1)));
|
||||
hash = jhash_1word(hash, ti->hash_seed);
|
||||
return flex_array_get(ti->buckets,
|
||||
(hash & (ti->n_buckets - 1)));
|
||||
}
|
||||
|
||||
static void __tbl_insert(struct flow_table *table, struct sw_flow *flow)
|
||||
static void table_instance_insert(struct table_instance *ti, struct sw_flow *flow)
|
||||
{
|
||||
struct hlist_head *head;
|
||||
|
||||
head = find_bucket(table, flow->hash);
|
||||
hlist_add_head_rcu(&flow->hash_node[table->node_ver], head);
|
||||
|
||||
table->count++;
|
||||
head = find_bucket(ti, flow->hash);
|
||||
hlist_add_head_rcu(&flow->hash_node[ti->node_ver], head);
|
||||
}
|
||||
|
||||
static void flow_table_copy_flows(struct flow_table *old,
|
||||
struct flow_table *new)
|
||||
static void flow_table_copy_flows(struct table_instance *old,
|
||||
struct table_instance *new)
|
||||
{
|
||||
int old_ver;
|
||||
int i;
|
||||
@ -283,35 +291,42 @@ static void flow_table_copy_flows(struct flow_table *old,
|
||||
head = flex_array_get(old->buckets, i);
|
||||
|
||||
hlist_for_each_entry(flow, head, hash_node[old_ver])
|
||||
__tbl_insert(new, flow);
|
||||
table_instance_insert(new, flow);
|
||||
}
|
||||
|
||||
new->mask_list = old->mask_list;
|
||||
old->keep_flows = true;
|
||||
}
|
||||
|
||||
static struct flow_table *__flow_tbl_rehash(struct flow_table *table,
|
||||
static struct table_instance *table_instance_rehash(struct table_instance *ti,
|
||||
int n_buckets)
|
||||
{
|
||||
struct flow_table *new_table;
|
||||
struct table_instance *new_ti;
|
||||
|
||||
new_table = __flow_tbl_alloc(n_buckets);
|
||||
if (!new_table)
|
||||
new_ti = table_instance_alloc(n_buckets);
|
||||
if (!new_ti)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
flow_table_copy_flows(table, new_table);
|
||||
flow_table_copy_flows(ti, new_ti);
|
||||
|
||||
return new_table;
|
||||
return new_ti;
|
||||
}
|
||||
|
||||
struct flow_table *ovs_flow_tbl_rehash(struct flow_table *table)
|
||||
int ovs_flow_tbl_flush(struct flow_table *flow_table)
|
||||
{
|
||||
return __flow_tbl_rehash(table, table->n_buckets);
|
||||
}
|
||||
struct table_instance *old_ti;
|
||||
struct table_instance *new_ti;
|
||||
|
||||
struct flow_table *ovs_flow_tbl_expand(struct flow_table *table)
|
||||
{
|
||||
return __flow_tbl_rehash(table, table->n_buckets * 2);
|
||||
old_ti = ovsl_dereference(flow_table->ti);
|
||||
new_ti = table_instance_alloc(TBL_MIN_BUCKETS);
|
||||
if (!new_ti)
|
||||
return -ENOMEM;
|
||||
|
||||
rcu_assign_pointer(flow_table->ti, new_ti);
|
||||
flow_table->last_rehash = jiffies;
|
||||
flow_table->count = 0;
|
||||
|
||||
table_instance_destroy(old_ti, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static u32 flow_hash(const struct sw_flow_key *key, int key_start,
|
||||
@ -367,7 +382,7 @@ bool ovs_flow_cmp_unmasked_key(const struct sw_flow *flow,
|
||||
return cmp_key(&flow->unmasked_key, key, key_start, key_end);
|
||||
}
|
||||
|
||||
static struct sw_flow *masked_flow_lookup(struct flow_table *table,
|
||||
static struct sw_flow *masked_flow_lookup(struct table_instance *ti,
|
||||
const struct sw_flow_key *unmasked,
|
||||
struct sw_flow_mask *mask)
|
||||
{
|
||||
@ -380,8 +395,8 @@ static struct sw_flow *masked_flow_lookup(struct flow_table *table,
|
||||
|
||||
ovs_flow_mask_key(&masked_key, unmasked, mask);
|
||||
hash = flow_hash(&masked_key, key_start, key_end);
|
||||
head = find_bucket(table, hash);
|
||||
hlist_for_each_entry_rcu(flow, head, hash_node[table->node_ver]) {
|
||||
head = find_bucket(ti, hash);
|
||||
hlist_for_each_entry_rcu(flow, head, hash_node[ti->node_ver]) {
|
||||
if (flow->mask == mask &&
|
||||
flow_cmp_masked_key(flow, &masked_key,
|
||||
key_start, key_end))
|
||||
@ -393,29 +408,55 @@ static struct sw_flow *masked_flow_lookup(struct flow_table *table,
|
||||
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *tbl,
|
||||
const struct sw_flow_key *key)
|
||||
{
|
||||
struct sw_flow *flow = NULL;
|
||||
struct table_instance *ti = rcu_dereference(tbl->ti);
|
||||
struct sw_flow_mask *mask;
|
||||
struct sw_flow *flow;
|
||||
|
||||
list_for_each_entry_rcu(mask, tbl->mask_list, list) {
|
||||
flow = masked_flow_lookup(tbl, key, mask);
|
||||
list_for_each_entry_rcu(mask, &tbl->mask_list, list) {
|
||||
flow = masked_flow_lookup(ti, key, mask);
|
||||
if (flow) /* Found */
|
||||
break;
|
||||
return flow;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return flow;
|
||||
static struct table_instance *table_instance_expand(struct table_instance *ti)
|
||||
{
|
||||
return table_instance_rehash(ti, ti->n_buckets * 2);
|
||||
}
|
||||
|
||||
void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow)
|
||||
{
|
||||
struct table_instance *ti = NULL;
|
||||
struct table_instance *new_ti = NULL;
|
||||
|
||||
ti = ovsl_dereference(table->ti);
|
||||
|
||||
/* Expand table, if necessary, to make room. */
|
||||
if (table->count > ti->n_buckets)
|
||||
new_ti = table_instance_expand(ti);
|
||||
else if (time_after(jiffies, table->last_rehash + REHASH_INTERVAL))
|
||||
new_ti = table_instance_rehash(ti, ti->n_buckets);
|
||||
|
||||
if (new_ti && !IS_ERR(new_ti)) {
|
||||
rcu_assign_pointer(table->ti, new_ti);
|
||||
ovs_flow_tbl_destroy(table, true);
|
||||
ti = ovsl_dereference(table->ti);
|
||||
table->last_rehash = jiffies;
|
||||
}
|
||||
|
||||
flow->hash = flow_hash(&flow->key, flow->mask->range.start,
|
||||
flow->mask->range.end);
|
||||
__tbl_insert(table, flow);
|
||||
table_instance_insert(ti, flow);
|
||||
table->count++;
|
||||
}
|
||||
|
||||
void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow)
|
||||
{
|
||||
struct table_instance *ti = ovsl_dereference(table->ti);
|
||||
|
||||
BUG_ON(table->count == 0);
|
||||
hlist_del_rcu(&flow->hash_node[table->node_ver]);
|
||||
hlist_del_rcu(&flow->hash_node[ti->node_ver]);
|
||||
table->count--;
|
||||
}
|
||||
|
||||
@ -475,7 +516,7 @@ struct sw_flow_mask *ovs_sw_flow_mask_find(const struct flow_table *tbl,
|
||||
{
|
||||
struct list_head *ml;
|
||||
|
||||
list_for_each(ml, tbl->mask_list) {
|
||||
list_for_each(ml, &tbl->mask_list) {
|
||||
struct sw_flow_mask *m;
|
||||
m = container_of(ml, struct sw_flow_mask, list);
|
||||
if (mask_equal(mask, m))
|
||||
@ -492,7 +533,7 @@ struct sw_flow_mask *ovs_sw_flow_mask_find(const struct flow_table *tbl,
|
||||
*/
|
||||
void ovs_sw_flow_mask_insert(struct flow_table *tbl, struct sw_flow_mask *mask)
|
||||
{
|
||||
list_add_rcu(&mask->list, tbl->mask_list);
|
||||
list_add_rcu(&mask->list, &tbl->mask_list);
|
||||
}
|
||||
|
||||
/* Initializes the flow module.
|
||||
|
||||
@ -36,42 +36,36 @@
|
||||
|
||||
#include "flow.h"
|
||||
|
||||
#define TBL_MIN_BUCKETS 1024
|
||||
|
||||
struct flow_table {
|
||||
struct table_instance {
|
||||
struct flex_array *buckets;
|
||||
unsigned int count, n_buckets;
|
||||
unsigned int n_buckets;
|
||||
struct rcu_head rcu;
|
||||
struct list_head *mask_list;
|
||||
int node_ver;
|
||||
u32 hash_seed;
|
||||
bool keep_flows;
|
||||
};
|
||||
|
||||
struct flow_table {
|
||||
struct table_instance __rcu *ti;
|
||||
struct list_head mask_list;
|
||||
unsigned long last_rehash;
|
||||
unsigned int count;
|
||||
};
|
||||
|
||||
int ovs_flow_init(void);
|
||||
void ovs_flow_exit(void);
|
||||
|
||||
struct sw_flow *ovs_flow_alloc(void);
|
||||
void ovs_flow_free(struct sw_flow *, bool deferred);
|
||||
|
||||
static inline int ovs_flow_tbl_count(struct flow_table *table)
|
||||
{
|
||||
return table->count;
|
||||
}
|
||||
|
||||
static inline int ovs_flow_tbl_need_to_expand(struct flow_table *table)
|
||||
{
|
||||
return (table->count > table->n_buckets);
|
||||
}
|
||||
|
||||
struct flow_table *ovs_flow_tbl_alloc(int new_size);
|
||||
struct flow_table *ovs_flow_tbl_expand(struct flow_table *table);
|
||||
struct flow_table *ovs_flow_tbl_rehash(struct flow_table *table);
|
||||
int ovs_flow_tbl_init(struct flow_table *);
|
||||
int ovs_flow_tbl_count(struct flow_table *table);
|
||||
void ovs_flow_tbl_destroy(struct flow_table *table, bool deferred);
|
||||
int ovs_flow_tbl_flush(struct flow_table *flow_table);
|
||||
|
||||
void ovs_flow_tbl_insert(struct flow_table *table, struct sw_flow *flow);
|
||||
void ovs_flow_tbl_remove(struct flow_table *table, struct sw_flow *flow);
|
||||
struct sw_flow *ovs_flow_tbl_dump_next(struct flow_table *table,
|
||||
struct sw_flow *ovs_flow_tbl_dump_next(struct table_instance *table,
|
||||
u32 *bucket, u32 *idx);
|
||||
struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *,
|
||||
const struct sw_flow_key *);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user