]> git.baikalelectronics.ru Git - kernel.git/commit
skbuff: Fix skb checksum partial check.
authorPravin B Shelar <pshelar@nicira.com>
Tue, 29 Sep 2015 00:24:25 +0000 (17:24 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 29 Sep 2015 23:48:46 +0000 (16:48 -0700)
commit789aff362d0f203ec93008c4fd3030e6ce09be74
treefa7d2bb42af8e4f89805fbd5661f7a0d57d38132
parenta92a1e0451710b25f3535e3bf26412e5360963fa
skbuff: Fix skb checksum partial check.

Earlier patch fb738080a tried to detect void ckecksum partial
skb by comparing pull length to checksum offset. But it does
not work for all cases since checksum-offset depends on
updates to skb->data.

Following patch fixes it by validating checksum start offset
after skb-data pointer is updated. Negative value of checksum
offset start means there is no need to checksum.

Fixes: fb738080a ("skbuff: Fix skb checksum flag on skb pull")
Reported-by: Andrew Vagin <avagin@odin.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/skbuff.h
net/core/skbuff.c