netdev - [PATCH net-next 2/6] netfilter: flowtable: nf_flow_table

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Date:   Sun, 23 Feb 2020 13:45:03 +0200
From:   Paul Blakey <paulb@...lanox.com>
To:     Paul Blakey <paulb@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Oz Shlomo <ozsh@...lanox.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Vlad Buslov <vladbu@...lanox.com>,
        David Miller <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Jiri Pirko <jiri@...lanox.com>, Roi Dayan <roid@...lanox.com>
Cc:     Pablo Neira Ayuso <pablo@...filter.org>
Subject: [PATCH net-next 2/6] netfilter: flowtable: nf_flow_table_iterate() returns the number of entries

From: Pablo Neira Ayuso <pablo@...filter.org>

Update this iterator to return the number of entries in this flowtable.

Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Paul Blakey <paulb@...lanox.com>
---
 net/netfilter/nf_flow_table_core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index face98b..83bc456 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -319,7 +319,7 @@ struct flow_offload_tuple_rhash *
 	struct flow_offload_tuple_rhash *tuplehash;
 	struct rhashtable_iter hti;
 	struct flow_offload *flow;
-	int err = 0;
+	int err = 0, cnt = 0;
 
 	rhashtable_walk_enter(&flow_table->rhashtable, &hti);
 	rhashtable_walk_start(&hti);
@@ -338,11 +338,12 @@ struct flow_offload_tuple_rhash *
 		flow = container_of(tuplehash, struct flow_offload, tuplehash[0]);
 
 		iter(flow_table, flow, data);
+		cnt++;
 	}
 	rhashtable_walk_stop(&hti);
 	rhashtable_walk_exit(&hti);
 
-	return err;
+	return err < 0 ? err : cnt;
 }
 
 static void nf_flow_offload_gc_step(struct nf_flowtable *flow_table,
-- 
1.8.3.1