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be2net: Checksum field valid only for TCP/UDP 

L4 checksum field is valid only for TCP/UDP packets in Lancer

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Subramanian Seetharaman <subbu.seetharaman@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Padmanabh Ratnakar 2011-03-07 03:08:16 +00:00 committed by David S. Miller
parent e80d9da651
commit 19fad86f3b
1 changed files with 6 additions and 3 deletions
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9
drivers/net/benet/be_main.c
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@ -865,14 +865,17 @@ static void be_rx_stats_update(struct be_rx_obj *rxo,
static inline bool csum_passed(struct be_eth_rx_compl *rxcp)
{
u8 l4_cksm, ipv6, ipcksm;
u8 l4_cksm, ipv6, ipcksm, tcpf, udpf;
l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
ipv6 = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
/* Ignore ipcksm for ipv6 pkts */
return l4_cksm && (ipcksm || ipv6);
/* L4 checksum is not reliable for non TCP/UDP packets.
* Also ignore ipcksm for ipv6 pkts */
return (tcpf || udpf) && l4_cksm && (ipcksm || ipv6);
}
static struct be_rx_page_info *