xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: dsa: factor skb freeing on xmit

Browse Source 
As of a86d8becc3 ("net: dsa: Factor bottom tag receive functions"),
the rcv caller frees the original SKB in case or error.

Be symmetric with that and make the xmit caller do the same.

At the same time, fix the checkpatch NULL comparison check:

        CHECK: Comparison to NULL could be written "!nskb"
    #208: FILE: net/dsa/tag_trailer.c:35:
    +	if (nskb == NULL)

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot
2017-06-01 16:07:15 -04:00
committed by David S. Miller
parent 5470979585
commit fe47d56306
9 changed files with 16 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
net/dsa/slave.c
View File

@@ -357,10 +357,14 @@ static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
/* Transmit function may have to reallocate the original SKB */
/* Transmit function may have to reallocate the original SKB,
* in which case it must have freed it. Only free it here on error.
*/
nskb = p->xmit(skb, dev);
if (!nskb)
if (!nskb) {
kfree_skb(skb);
return NETDEV_TX_OK;
}
/* SKB for netpoll still need to be mangled with the protocol-specific
* tag to be successfully transmitted