diff options
| author | Eelco Chaudron <echaudro@redhat.com> | 2020-07-31 14:20:56 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-08-03 15:17:48 -0700 |
| commit | 9d2f627b7ec9d5d3246b6cec17f290ee6778c83b (patch) | |
| tree | 79d4b5e7a6a6f7c49a37585c3b685788ed68e5fd /net/openvswitch/flow_table.c | |
| parent | d6526926de7397a97308780911565e31a6b67b59 (diff) | |
net: openvswitch: add masks cache hit counter
Add a counter that counts the number of masks cache hits, and
export it through the megaflow netlink statistics.
Reviewed-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/flow_table.c')
| -rw-r--r-- | net/openvswitch/flow_table.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/net/openvswitch/flow_table.c b/net/openvswitch/flow_table.c index af22c9ee28dd..a5912ea05352 100644 --- a/net/openvswitch/flow_table.c +++ b/net/openvswitch/flow_table.c @@ -667,6 +667,7 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl, struct mask_array *ma, const struct sw_flow_key *key, u32 *n_mask_hit, + u32 *n_cache_hit, u32 *index) { u64 *usage_counters = this_cpu_ptr(ma->masks_usage_cntr); @@ -682,6 +683,7 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl, u64_stats_update_begin(&ma->syncp); usage_counters[*index]++; u64_stats_update_end(&ma->syncp); + (*n_cache_hit)++; return flow; } } @@ -719,7 +721,8 @@ static struct sw_flow *flow_lookup(struct flow_table *tbl, struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *tbl, const struct sw_flow_key *key, u32 skb_hash, - u32 *n_mask_hit) + u32 *n_mask_hit, + u32 *n_cache_hit) { struct mask_array *ma = rcu_dereference(tbl->mask_array); struct table_instance *ti = rcu_dereference(tbl->ti); @@ -729,10 +732,13 @@ struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *tbl, int seg; *n_mask_hit = 0; + *n_cache_hit = 0; if (unlikely(!skb_hash)) { u32 mask_index = 0; + u32 cache = 0; - return flow_lookup(tbl, ti, ma, key, n_mask_hit, &mask_index); + return flow_lookup(tbl, ti, ma, key, n_mask_hit, &cache, + &mask_index); } /* Pre and post recirulation flows usually have the same skb_hash @@ -753,7 +759,7 @@ struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *tbl, e = &entries[index]; if (e->skb_hash == skb_hash) { flow = flow_lookup(tbl, ti, ma, key, n_mask_hit, - &e->mask_index); + n_cache_hit, &e->mask_index); if (!flow) e->skb_hash = 0; return flow; @@ -766,10 +772,12 @@ struct sw_flow *ovs_flow_tbl_lookup_stats(struct flow_table *tbl, } /* Cache miss, do full lookup. */ - flow = flow_lookup(tbl, ti, ma, key, n_mask_hit, &ce->mask_index); + flow = flow_lookup(tbl, ti, ma, key, n_mask_hit, n_cache_hit, + &ce->mask_index); if (flow) ce->skb_hash = skb_hash; + *n_cache_hit = 0; return flow; } @@ -779,9 +787,10 @@ struct sw_flow *ovs_flow_tbl_lookup(struct flow_table *tbl, struct table_instance *ti = rcu_dereference_ovsl(tbl->ti); struct mask_array *ma = rcu_dereference_ovsl(tbl->mask_array); u32 __always_unused n_mask_hit; + u32 __always_unused n_cache_hit; u32 index = 0; - return flow_lookup(tbl, ti, ma, key, &n_mask_hit, &index); + return flow_lookup(tbl, ti, ma, key, &n_mask_hit, &n_cache_hit, &index); } struct sw_flow *ovs_flow_tbl_lookup_exact(struct flow_table *tbl, |