leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net/mlx5e: Fix checksum handling for non-stripped vlan packets

Browse Source 
Now as rx-vlan offload can be disabled, packets can be received
with vlan tag not stripped, which means is_first_ethertype_ip will
return false, for that we need to check if the hardware reported
csum OK so we will report CHECKSUM_UNNECESSARY for those packets.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Saeed Mahameed 2016-04-24 22:51:56 +03:00 committed by David S. Miller
parent 363501145e
commit 1b223dd391
4 changed files with 38 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -109,6 +109,7 @@ static void mlx5e_update_sw_counters(struct mlx5e_priv *priv)
s->lro_bytes += rq_stats->lro_bytes;
s->rx_csum_none += rq_stats->csum_none;
s->rx_csum_sw += rq_stats->csum_sw;
s->rx_csum_inner += rq_stats->csum_inner;
s->rx_wqe_err += rq_stats->wqe_err;
s->rx_mpwqe_filler += rq_stats->mpwqe_filler;
s->rx_mpwqe_frag += rq_stats->mpwqe_frag;

20
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
View File

@ -543,16 +543,26 @@ static inline void mlx5e_handle_csum(struct net_device *netdev,
if (lro) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if (likely(is_first_ethertype_ip(skb))) {
return;
}
if (is_first_ethertype_ip(skb)) {
skb->ip_summed = CHECKSUM_COMPLETE;
skb->csum = csum_unfold((__force __sum16)cqe->check_sum);
rq->stats.csum_sw++;
} else {
goto csum_none;
return;
}
return;
if (likely((cqe->hds_ip_ext & CQE_L3_OK) &&
(cqe->hds_ip_ext & CQE_L4_OK))) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (cqe_is_tunneled(cqe)) {
skb->csum_level = 1;
skb->encapsulation = 1;
rq->stats.csum_inner++;
}
return;
}
csum_none:
skb->ip_summed = CHECKSUM_NONE;
rq->stats.csum_none++;

8
drivers/net/ethernet/mellanox/mlx5/core/en_stats.h
View File

@ -62,6 +62,7 @@ struct mlx5e_sw_stats {
u64 rx_csum_good;
u64 rx_csum_none;
u64 rx_csum_sw;
u64 rx_csum_inner;
u64 tx_csum_offload;
u64 tx_csum_inner;
u64 tx_queue_stopped;
@ -90,6 +91,7 @@ static const struct counter_desc sw_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_good) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_none) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_sw) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_csum_inner) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_offload) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_csum_inner) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_queue_stopped) },
@ -272,8 +274,9 @@ static const struct counter_desc pport_per_prio_pfc_stats_desc[] = {
struct mlx5e_rq_stats {
u64 packets;
u64 bytes;
u64 csum_none;
u64 csum_sw;
u64 csum_inner;
u64 csum_none;
u64 lro_packets;
u64 lro_bytes;
u64 wqe_err;
@ -285,8 +288,9 @@ struct mlx5e_rq_stats {
static const struct counter_desc rq_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, packets) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, bytes) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_none) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_sw) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_inner) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, csum_none) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, lro_packets) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, lro_bytes) },
{ MLX5E_DECLARE_STAT(struct mlx5e_rq_stats, wqe_err) },

21
include/linux/mlx5/device.h
View File

@ -645,8 +645,9 @@ struct mlx5_err_cqe {
};
struct mlx5_cqe64 {
u8 rsvd0[2];
__be16 wqe_id;
u8 outer_l3_tunneled;
u8 rsvd0;
__be16 wqe_id;
u8 lro_tcppsh_abort_dupack;
u8 lro_min_ttl;
__be16 lro_tcp_win;
@ -659,7 +660,7 @@ struct mlx5_cqe64 {
__be16 slid;
__be32 flags_rqpn;
u8 hds_ip_ext;
u8 l4_hdr_type_etc;
u8 l4_l3_hdr_type;
__be16 vlan_info;
__be32 srqn; /* [31:24]: lro_num_seg, [23:0]: srqn */
__be32 imm_inval_pkey;
@ -680,12 +681,22 @@ static inline int get_cqe_lro_tcppsh(struct mlx5_cqe64 *cqe)
static inline u8 get_cqe_l4_hdr_type(struct mlx5_cqe64 *cqe)
{
return (cqe->l4_hdr_type_etc >> 4) & 0x7;
return (cqe->l4_l3_hdr_type >> 4) & 0x7;
}
static inline u8 get_cqe_l3_hdr_type(struct mlx5_cqe64 *cqe)
{
return (cqe->l4_l3_hdr_type >> 2) & 0x3;
}
static inline u8 cqe_is_tunneled(struct mlx5_cqe64 *cqe)
{
return cqe->outer_l3_tunneled & 0x1;
}
static inline int cqe_has_vlan(struct mlx5_cqe64 *cqe)
{
return !!(cqe->l4_hdr_type_etc & 0x1);
return !!(cqe->l4_l3_hdr_type & 0x1);
}
static inline u64 get_cqe_ts(struct mlx5_cqe64 *cqe)