diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_input.c | 25 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 2 | ||||
| -rw-r--r-- | net/core/dev.c | 21 | ||||
| -rw-r--r-- | net/core/skbuff.c | 1 |
4 files changed, 30 insertions, 19 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 88e4aa9cb1f9..e2160792e1bc 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -139,21 +139,22 @@ static inline int is_link_local(const unsigned char *dest) * Return NULL if skb is handled * note: already called with rcu_read_lock */ -struct sk_buff *br_handle_frame(struct sk_buff *skb) +rx_handler_result_t br_handle_frame(struct sk_buff **pskb) { struct net_bridge_port *p; + struct sk_buff *skb = *pskb; const unsigned char *dest = eth_hdr(skb)->h_dest; br_should_route_hook_t *rhook; if (unlikely(skb->pkt_type == PACKET_LOOPBACK)) - return skb; + return RX_HANDLER_PASS; if (!is_valid_ether_addr(eth_hdr(skb)->h_source)) goto drop; skb = skb_share_check(skb, GFP_ATOMIC); if (!skb) - return NULL; + return RX_HANDLER_CONSUMED; p = br_port_get_rcu(skb->dev); @@ -167,10 +168,12 @@ struct sk_buff *br_handle_frame(struct sk_buff *skb) goto forward; if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev, - NULL, br_handle_local_finish)) - return NULL; /* frame consumed by filter */ - else - return skb; /* continue processing */ + NULL, br_handle_local_finish)) { + return RX_HANDLER_CONSUMED; /* consumed by filter */ + } else { + *pskb = skb; + return RX_HANDLER_PASS; /* continue processing */ + } } forward: @@ -178,8 +181,10 @@ forward: case BR_STATE_FORWARDING: rhook = rcu_dereference(br_should_route_hook); if (rhook) { - if ((*rhook)(skb)) - return skb; + if ((*rhook)(skb)) { + *pskb = skb; + return RX_HANDLER_PASS; + } dest = eth_hdr(skb)->h_dest; } /* fall through */ @@ -194,5 +199,5 @@ forward: drop: kfree_skb(skb); } - return NULL; + return RX_HANDLER_CONSUMED; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index f7afc364d777..19e2f46ed086 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -379,7 +379,7 @@ extern void br_features_recompute(struct net_bridge *br); /* br_input.c */ extern int br_handle_frame_finish(struct sk_buff *skb); -extern struct sk_buff *br_handle_frame(struct sk_buff *skb); +extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); /* br_ioctl.c */ extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); diff --git a/net/core/dev.c b/net/core/dev.c index 0d39032e9621..0b88eba97dab 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3070,6 +3070,8 @@ out: * on a failure. * * The caller must hold the rtnl_mutex. + * + * For a general description of rx_handler, see enum rx_handler_result. */ int netdev_rx_handler_register(struct net_device *dev, rx_handler_func_t *rx_handler, @@ -3129,6 +3131,7 @@ static int __netif_receive_skb(struct sk_buff *skb) rx_handler_func_t *rx_handler; struct net_device *orig_dev; struct net_device *null_or_dev; + bool deliver_exact = false; int ret = NET_RX_DROP; __be16 type; @@ -3181,18 +3184,22 @@ ncls: rx_handler = rcu_dereference(skb->dev->rx_handler); if (rx_handler) { - struct net_device *prev_dev; - if (pt_prev) { ret = deliver_skb(skb, pt_prev, orig_dev); pt_prev = NULL; } - prev_dev = skb->dev; - skb = rx_handler(skb); - if (!skb) + switch (rx_handler(&skb)) { + case RX_HANDLER_CONSUMED: goto out; - if (skb->dev != prev_dev) + case RX_HANDLER_ANOTHER: goto another_round; + case RX_HANDLER_EXACT: + deliver_exact = true; + case RX_HANDLER_PASS: + break; + default: + BUG(); + } } if (vlan_tx_tag_present(skb)) { @@ -3210,7 +3217,7 @@ ncls: vlan_on_bond_hook(skb); /* deliver only exact match when indicated */ - null_or_dev = skb->deliver_no_wcard ? skb->dev : NULL; + null_or_dev = deliver_exact ? skb->dev : NULL; type = skb->protocol; list_for_each_entry_rcu(ptype, diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 1eb526a848ff..801dd08908f9 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -523,7 +523,6 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old) new->ip_summed = old->ip_summed; skb_copy_queue_mapping(new, old); new->priority = old->priority; - new->deliver_no_wcard = old->deliver_no_wcard; #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE) new->ipvs_property = old->ipvs_property; #endif |