Re: [PATCH net-next-2.6 2/7] be2net: Checksum field valid only for TCP/UDP
From: Ram Pai <hidden>
Date: 2011-03-11 00:05:15
On Mon, Mar 07, 2011 at 06:38:16PM +0530, Padmanabh Ratnakar wrote:
quoted hunk ↗ jump to hunk
L4 checksum field is valid only for TCP/UDP packets in Lancer Signed-off-by: Padmanabh Ratnakar <redacted> Signed-off-by: Sathya Perla <redacted> Signed-off-by: Subramanian Seetharaman <redacted> --- drivers/net/benet/be_main.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-)diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index bf34434..ac7ae21 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c@@ -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);
Is it invalid for non-Lancer too ? if not, then should'nt the above condition be applied only for lancer? RP