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bnx2x: populate skb->l4_rxhash

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l4_rxhash is set on skb when rxhash is obtained from canonical 4-tuple
over transport ports/addresses.

We can set skb->l4_rxhash for all incoming TCP packets on bnx2x for
free, as cqe status contains a hash type information.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-07-09 06:02:24 +00:00 committed by David S. Miller
parent 5c9df5fed1
commit a334b5fb19
2 changed files with 16 additions and 4 deletions
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1
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
View File

@ -454,6 +454,7 @@ struct bnx2x_agg_info {
u16 vlan_tag;
u16 len_on_bd;
u32 rxhash;
bool l4_rxhash;
u16 gro_size;
u16 full_page;
};

19
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
View File

@ -295,12 +295,20 @@ static inline void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
* CQE (calculated by HW).
*/
static u32 bnx2x_get_rxhash(const struct bnx2x *bp,
const struct eth_fast_path_rx_cqe *cqe)
const struct eth_fast_path_rx_cqe *cqe,
bool *l4_rxhash)
{
/* Set Toeplitz hash from CQE */
if ((bp->dev->features & NETIF_F_RXHASH) &&
(cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG))
(cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) {
enum eth_rss_hash_type htype;
htype = cqe->status_flags & ETH_FAST_PATH_RX_CQE_RSS_HASH_TYPE;
*l4_rxhash = (htype == TCP_IPV4_HASH_TYPE) ||
(htype == TCP_IPV6_HASH_TYPE);
return le32_to_cpu(cqe->rss_hash_result);
}
*l4_rxhash = false;
return 0;
}
@ -354,7 +362,7 @@ static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
tpa_info->tpa_state = BNX2X_TPA_START;
tpa_info->len_on_bd = le16_to_cpu(cqe->len_on_bd);
tpa_info->placement_offset = cqe->placement_offset;
tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe);
tpa_info->rxhash = bnx2x_get_rxhash(bp, cqe, &tpa_info->l4_rxhash);
if (fp->mode == TPA_MODE_GRO) {
u16 gro_size = le16_to_cpu(cqe->pkt_len_or_gro_seg_len);
tpa_info->full_page =
@ -589,6 +597,7 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
skb_reserve(skb, pad + NET_SKB_PAD);
skb_put(skb, len);
skb->rxhash = tpa_info->rxhash;
skb->l4_rxhash = tpa_info->l4_rxhash;
skb->protocol = eth_type_trans(skb, bp->dev);
skb->ip_summed = CHECKSUM_UNNECESSARY;
@ -712,6 +721,7 @@ int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
enum eth_rx_cqe_type cqe_fp_type;
u16 len, pad, queue;
u8 *data;
bool l4_rxhash;
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
@ -855,7 +865,8 @@ int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
skb->protocol = eth_type_trans(skb, bp->dev);
/* Set Toeplitz hash for a none-LRO skb */
skb->rxhash = bnx2x_get_rxhash(bp, cqe_fp);
skb->rxhash = bnx2x_get_rxhash(bp, cqe_fp, &l4_rxhash);
skb->l4_rxhash = l4_rxhash;
skb_checksum_none_assert(skb);