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authorJarek Poplawski <jarkao2@gmail.com>2009-11-15 07:20:12 (GMT)
committerDavid S. Miller <davem@davemloft.net>2009-11-16 06:08:33 (GMT)
commit9a1654ba0b50402a6bd03c7b0fe9b0200a5ea7b1 (patch)
tree3defd37672da2069e6c0ffd86b0b99c694324985 /net/core
parentcb43e23435a66d5ed90f804af9efe9096503979f (diff)
downloadlinux-9a1654ba0b50402a6bd03c7b0fe9b0200a5ea7b1.tar.xz
net: Optimize hard_start_xmit() return checking
Recent changes in the TX error propagation require additional checking and masking of values returned from hard_start_xmit(), mainly to separate cases where skb was consumed. This aim can be simplified by changing the order of NETDEV_TX and NET_XMIT codes, because the latter are treated similarly to negative (ERRNO) values. After this change much simpler dev_xmit_complete() is also used in sch_direct_xmit(), so it is moved to netdevice.h. Additionally NET_RX definitions in netdevice.h are moved up from between TX codes to avoid confusion while reading the TX comment. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c17
1 files changed, 0 insertions, 17 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 32045df..4b24d79 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1924,23 +1924,6 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
return rc;
}
-static inline bool dev_xmit_complete(int rc)
-{
- /* successful transmission */
- if (rc == NETDEV_TX_OK)
- return true;
-
- /* error while transmitting, driver consumed skb */
- if (rc < 0)
- return true;
-
- /* error while queueing to a different device, driver consumed skb */
- if (rc & NET_XMIT_MASK)
- return true;
-
- return false;
-}
-
/**
* dev_queue_xmit - transmit a buffer
* @skb: buffer to transmit