tg3: Don't check undefined error bits in RXBD

[ Upstream commit d7b95315cc7f441418845a165ee56df723941487 ]

Redefine the RXD_ERR_MASK to include only relevant error bits. This fixes
a customer reported issue of randomly dropping packets on the 5719.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 266a4c7..c77c462 100644 (file)
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -5637,8 +5637,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
 
                work_mask |= opaque_key;
 
-               if ((desc->err_vlan & RXD_ERR_MASK) != 0 &&
-                   (desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII)) {
+               if (desc->err_vlan & RXD_ERR_MASK) {
                drop_it:
                        tg3_recycle_rx(tnapi, tpr, opaque_key,
                                       desc_idx, *post_ptr);

diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h
index da90ba5..a398a6f 100644 (file)
--- a/drivers/net/ethernet/broadcom/tg3.h
+++ b/drivers/net/ethernet/broadcom/tg3.h
@@ -2477,7 +2477,11 @@ struct tg3_rx_buffer_desc {
 #define RXD_ERR_TOO_SMALL              0x00400000
 #define RXD_ERR_NO_RESOURCES           0x00800000
 #define RXD_ERR_HUGE_FRAME             0x01000000
-#define RXD_ERR_MASK                   0xffff0000
+
+#define RXD_ERR_MASK   (RXD_ERR_BAD_CRC | RXD_ERR_COLLISION |          \
+                        RXD_ERR_LINK_LOST | RXD_ERR_PHY_DECODE |       \
+                        RXD_ERR_MAC_ABRT | RXD_ERR_TOO_SMALL |         \
+                        RXD_ERR_NO_RESOURCES | RXD_ERR_HUGE_FRAME)
 
        u32                             reserved;
        u32                             opaque;