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driver/net: enic: record q_number and rss_hash for skb 

The following patch sets the skb->rxhash and skb->q_number.
This is used by RPS and RFS. Kernel can make use of hw provided hash
instead of calculating the hash.

Signed-off-by: Govindarajulu Varadarajan <govindarajulu90@gmail.com>
Signed-off-by: Nishank Trivedi <nistrive@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
govindarajulu.v 2013-09-04 11:17:15 +05:30 committed by David S. Miller
parent 822473b6c4
commit bf751ba802
1 changed files with 11 additions and 0 deletions
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11
drivers/net/ethernet/cisco/enic/enic_main.c
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@ -1034,6 +1034,14 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
skb_put(skb, bytes_written);
skb->protocol = eth_type_trans(skb, netdev);
skb_record_rx_queue(skb, q_number);
if (netdev->features & NETIF_F_RXHASH) {
skb->rxhash = rss_hash;
if (rss_type & (NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX |
NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 |
NIC_CFG_RSS_HASH_TYPE_TCP_IPV4))
skb->l4_rxhash = true;
}
if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) {
skb->csum = htons(checksum);
@ -2209,6 +2217,7 @@ static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
netif_set_real_num_tx_queues(netdev, enic->wq_count);
netif_set_real_num_rx_queues(netdev, enic->rq_count);
/* Setup notification timer, HW reset task, and wq locks
*/
@ -2258,6 +2267,8 @@ static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ENIC_SETTING(enic, TSO))
netdev->hw_features |= NETIF_F_TSO |
NETIF_F_TSO6 | NETIF_F_TSO_ECN;
if (ENIC_SETTING(enic, RSS))
netdev->hw_features |= NETIF_F_RXHASH;
if (ENIC_SETTING(enic, RXCSUM))
netdev->hw_features |= NETIF_F_RXCSUM;