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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2016-07-14 06:10:01 +0300
committerDavid S. Miller <davem@davemloft.net>2016-07-17 05:57:38 +0300
commitb35c5f632b630183396a2ea2e2247ff8bbf2c94f (patch)
treed3f99f73c088ec6360fdfa2331d9ba25d1127efa /net/bridge/br_forward.c
parente151aab9b5b3fae96b0fcd6cbe3a7f952d6cb8f8 (diff)
downloadlinux-b35c5f632b630183396a2ea2e2247ff8bbf2c94f.tar.xz
net: bridge: drop skb2/skb0 variables and use a local_rcv boolean
Currently if the packet is going to be received locally we set skb0 or sometimes called skb2 variables to the original skb. This can get confusing and also we can avoid one conditional on the fast path by simply using a boolean and passing it around. Thanks to Roopa for the name suggestion. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_forward.c')
-rw-r--r--net/bridge/br_forward.c35
1 files changed, 18 insertions, 17 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index d610644368b9..204f99304a8a 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -138,17 +138,18 @@ void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb)
EXPORT_SYMBOL_GPL(br_deliver);
/* called with rcu_read_lock */
-void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, struct sk_buff *skb0)
+void br_forward(const struct net_bridge_port *to, struct sk_buff *skb,
+ bool local_rcv)
{
if (to && should_deliver(to, skb)) {
- if (skb0)
+ if (local_rcv)
deliver_clone(to, skb, __br_forward);
else
__br_forward(to, skb);
return;
}
- if (!skb0)
+ if (!local_rcv)
kfree_skb(skb);
}
@@ -193,10 +194,9 @@ out:
/* called under bridge lock */
static void br_flood(struct net_bridge *br, struct sk_buff *skb,
- struct sk_buff *skb0,
void (*__packet_hook)(const struct net_bridge_port *p,
struct sk_buff *skb),
- bool unicast)
+ bool local_rcv, bool unicast)
{
u8 igmp_type = br_multicast_igmp_type(skb);
struct net_bridge_port *prev;
@@ -227,14 +227,14 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
if (!prev)
goto out;
- if (skb0)
+ if (local_rcv)
deliver_clone(prev, skb, __packet_hook);
else
__packet_hook(prev, skb);
return;
out:
- if (!skb0)
+ if (!local_rcv)
kfree_skb(skb);
}
@@ -242,23 +242,24 @@ out:
/* called with rcu_read_lock */
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast)
{
- br_flood(br, skb, NULL, __br_deliver, unicast);
+ br_flood(br, skb, __br_deliver, false, unicast);
}
/* called under bridge lock */
void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
- struct sk_buff *skb2, bool unicast)
+ bool local_rcv, bool unicast)
{
- br_flood(br, skb, skb2, __br_forward, unicast);
+ br_flood(br, skb, __br_forward, local_rcv, unicast);
}
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
/* called with rcu_read_lock */
static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
- struct sk_buff *skb, struct sk_buff *skb0,
+ struct sk_buff *skb,
void (*__packet_hook)(
const struct net_bridge_port *p,
- struct sk_buff *skb))
+ struct sk_buff *skb),
+ bool local_rcv)
{
struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
u8 igmp_type = br_multicast_igmp_type(skb);
@@ -295,14 +296,14 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
if (!prev)
goto out;
- if (skb0)
+ if (local_rcv)
deliver_clone(prev, skb, __packet_hook);
else
__packet_hook(prev, skb);
return;
out:
- if (!skb0)
+ if (!local_rcv)
kfree_skb(skb);
}
@@ -310,13 +311,13 @@ out:
void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
struct sk_buff *skb)
{
- br_multicast_flood(mdst, skb, NULL, __br_deliver);
+ br_multicast_flood(mdst, skb, __br_deliver, false);
}
/* called with rcu_read_lock */
void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
- struct sk_buff *skb, struct sk_buff *skb2)
+ struct sk_buff *skb, bool local_rcv)
{
- br_multicast_flood(mdst, skb, skb2, __br_forward);
+ br_multicast_flood(mdst, skb, __br_forward, local_rcv);
}
#endif