[PATCH] net: Init backlog NAPI's gro_hash.

[David Miller]

Based upon a patch by Sean Tranchetti.

Fixes: d4546c2509b1 ("net: Convert GRO SKB handling to list_head.")
Signed-off-by: David S. Miller <da...@davemloft.net>
---
 net/core/dev.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 4f8b92d81d10..87c42c8249ae 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6115,19 +6115,24 @@ static enum hrtimer_restart napi_watchdog(struct 
hrtimer *timer)
        return HRTIMER_NORESTART;
 }
 
-void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
-                   int (*poll)(struct napi_struct *, int), int weight)
+static void init_gro_hash(struct napi_struct *napi)
 {
        int i;
 
-       INIT_LIST_HEAD(&napi->poll_list);
-       hrtimer_init(&napi->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_PINNED);
-       napi->timer.function = napi_watchdog;
-       napi->gro_bitmask = 0;
        for (i = 0; i < GRO_HASH_BUCKETS; i++) {
                INIT_LIST_HEAD(&napi->gro_hash[i].list);
                napi->gro_hash[i].count = 0;
        }
+       napi->gro_bitmask = 0;
+}
+
+void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
+                   int (*poll)(struct napi_struct *, int), int weight)
+{
+       INIT_LIST_HEAD(&napi->poll_list);
+       hrtimer_init(&napi->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_PINNED);
+       napi->timer.function = napi_watchdog;
+       init_gro_hash(napi);
        napi->skb = NULL;
        napi->poll = poll;
        if (weight > NAPI_POLL_WEIGHT)
@@ -9554,6 +9559,7 @@ static int __init net_dev_init(void)
                sd->cpu = i;
 #endif
 
+               init_gro_hash(&sd->backlog);
                sd->backlog.poll = process_backlog;
                sd->backlog.weight = weight_p;
        }
-- 
2.17.1