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| author | Jiri Pirko <jpirko@redhat.com> | 2011-03-12 03:14:39 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-16 12:53:54 -0700 |
| commit | 8a4eb5734e8d1dc60a8c28576bbbdfdcc643626d (patch) | |
| tree | ed4cd2f9a2a04a30994a8f8964a81834c895c0c9 /net/bridge | |
| parent | 2d7011ca79f1a8792e04d131b8ea21db179ab917 (diff) | |
| download | linux-stable-8a4eb5734e8d1dc60a8c28576bbbdfdcc643626d.tar.gz linux-stable-8a4eb5734e8d1dc60a8c28576bbbdfdcc643626d.tar.bz2 linux-stable-8a4eb5734e8d1dc60a8c28576bbbdfdcc643626d.zip | |
net: introduce rx_handler results and logic around that
This patch allows rx_handlers to better signalize what to do next to
it's caller. That makes skb->deliver_no_wcard no longer needed.
kernel-doc for rx_handler_result is taken from Nicolas' patch.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_input.c | 25 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 2 |
2 files changed, 16 insertions, 11 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); |