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mlxsw: Strip FCS from incoming packets 

FCS of incoming packets is already checked by HW. Just strip it out.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2015-08-06 16:41:55 +02:00 committed by David S. Miller
parent 74ed207e2a
commit 7b7b9cff74
2 changed files with 11 additions and 1 deletions
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6
drivers/net/ethernet/mellanox/mlxsw/pci.c
View File

@ -667,6 +667,7 @@ static void mlxsw_pci_cqe_rdq_handle(struct mlxsw_pci *mlxsw_pci,
char *wqe;
struct sk_buff *skb;
struct mlxsw_rx_info rx_info;
u16 byte_count;
int err;
elem_info = mlxsw_pci_queue_elem_info_consumer_get(q);
@ -686,7 +687,10 @@ static void mlxsw_pci_cqe_rdq_handle(struct mlxsw_pci *mlxsw_pci,
rx_info.sys_port = mlxsw_pci_cqe_system_port_get(cqe);
rx_info.trap_id = mlxsw_pci_cqe_trap_id_get(cqe);
skb_put(skb, mlxsw_pci_cqe_byte_count_get(cqe));
byte_count = mlxsw_pci_cqe_byte_count_get(cqe);
if (mlxsw_pci_cqe_crc_get(cqe))
byte_count -= ETH_FCS_LEN;
skb_put(skb, byte_count);
mlxsw_core_skb_receive(mlxsw_pci->core, skb, &rx_info);
put_new_skb:

6
drivers/net/ethernet/mellanox/mlxsw/pci.h
View File

@ -155,6 +155,12 @@ MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);
*/
MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 8);
/* pci_cqe_crc
* Length include CRC. Indicates the length field includes
* the packet's CRC.
*/
MLXSW_ITEM32(pci, cqe, crc, 0x0C, 8, 1);
/* pci_cqe_e
* CQE with Error.
*/