diff options
Diffstat (limited to 'include/net/gro_cells.h')
| -rw-r--r-- | include/net/gro_cells.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h index cf6c74550baa..cd856b7a11f5 100644 --- a/include/net/gro_cells.h +++ b/include/net/gro_cells.h @@ -19,22 +19,30 @@ static inline void gro_cells_receive(struct gro_cells *gcells, struct sk_buff *s struct gro_cell *cell; struct net_device *dev = skb->dev; + rcu_read_lock(); + if (unlikely(!(dev->flags & IFF_UP))) + goto drop; + if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO)) { netif_rx(skb); - return; + goto unlock; } cell = this_cpu_ptr(gcells->cells); if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) { +drop: atomic_long_inc(&dev->rx_dropped); kfree_skb(skb); - return; + goto unlock; } __skb_queue_tail(&cell->napi_skbs, skb); if (skb_queue_len(&cell->napi_skbs) == 1) napi_schedule(&cell->napi); + +unlock: + rcu_read_unlock(); } /* called under BH context */ @@ -84,6 +92,7 @@ static inline void gro_cells_destroy(struct gro_cells *gcells) for_each_possible_cpu(i) { struct gro_cell *cell = per_cpu_ptr(gcells->cells, i); + napi_disable(&cell->napi); netif_napi_del(&cell->napi); __skb_queue_purge(&cell->napi_skbs); } |