be2net: Mark checksum fail for IP fragmented packets

HW does not compute L4 checksum for IP Fragmented packets.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 8 insertions, 2 deletions

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index f544b297c9ab..0a510684e468 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -262,6 +262,7 @@ struct be_rx_compl_info {
         u8 ipv6;
         u8 vtm;
         u8 pkt_type;
+        u8 ip_frag;
 };
 
 struct be_rx_obj {
diff --git a/drivers/net/ethernet/emulex/benet/be_hw.h b/drivers/net/ethernet/emulex/benet/be_hw.h
index 3c1099b47f2a..8780183c6d1c 100644
--- a/drivers/net/ethernet/emulex/benet/be_hw.h
+++ b/drivers/net/ethernet/emulex/benet/be_hw.h
@@ -356,7 +356,7 @@ struct amap_eth_rx_compl_v0 {
         u8 ip_version;          /* dword 1 */
         u8 macdst[6];           /* dword 1 */
         u8 vtp;                 /* dword 1 */
-        u8 rsvd0;               /* dword 1 */
+        u8 ip_frag;             /* dword 1 */
         u8 fragndx[10];         /* dword 1 */
         u8 ct[2];               /* dword 1 */
         u8 sw;                  /* dword 1 */
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index ca2967b0f18b..32a6927ca977 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -1599,6 +1599,8 @@ static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
                                                compl);
         }
         rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v0, port, compl);
+        rxcp->ip_frag = AMAP_GET_BITS(struct amap_eth_rx_compl_v0,
+                                      ip_frag, compl);
 }
 
 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
@@ -1620,6 +1622,9 @@ static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
         else
                 be_parse_rx_compl_v0(compl, rxcp);
 
+        if (rxcp->ip_frag)
+                rxcp->l4_csum = 0;
+
         if (rxcp->vlanf) {
                 /* vlanf could be wrongly set in some cards.
                  * ignore if vtm is not set */
@@ -2168,7 +2173,7 @@ static irqreturn_t be_msix(int irq, void *dev)
 
 static inline bool do_gro(struct be_rx_compl_info *rxcp)
 {
-        return (rxcp->tcpf && !rxcp->err) ? true : false;
+        return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
 }
 
 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,