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authorAlexander Duyck <alexander.h.duyck@intel.com>2013-02-01 08:56:47 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2013-04-18 16:40:01 -0700
commitb9555f6627656309c01b0c077dcecbee0ac9343f (patch)
treed83b423538bd5243c528e1fc5dc4e61ea00bcdc5 /drivers
parent5c17a203721d72c36798e5d7fa564e1adf8beb65 (diff)
igb: Mask off check of frag_off as we only want fragment offset
We were incorrectly checking the entire frag_off field when we only wanted the fragment offset. As a result we were not pulling in TCP headers when the DNF flag was set. To correct that we will now check for frag off using the IP_OFFSET mask. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 7f83bb1e21fc..2f3dab079900 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6472,7 +6472,7 @@ static unsigned int igb_get_headlen(unsigned char *data,
return hdr.network - data;
/* record next protocol if header is present */
- if (!hdr.ipv4->frag_off)
+ if (!(hdr.ipv4->frag_off & htons(IP_OFFSET)))
nexthdr = hdr.ipv4->protocol;
} else if (protocol == __constant_htons(ETH_P_IPV6)) {
if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr)))