From: Haiyang Zhang <haiya...@microsoft.com> The per socket hash is set when a socket is connected. Use it, when available, to save CPU cycles on repeatedly computing hash on the same connection.
Signed-off-by: Haiyang Zhang <haiya...@microsoft.com> Reviewed-by: Stephen Hemminger <sthem...@microsoft.com> --- drivers/net/hyperv/netvsc_drv.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index f24c289..0a129cb 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -211,9 +211,14 @@ static u16 netvsc_select_queue(struct net_device *ndev, struct sk_buff *skb, int q_idx = sk_tx_queue_get(sk); if (q_idx < 0 || skb->ooo_okay || q_idx >= num_tx_queues) { - u16 hash = __skb_tx_hash(ndev, skb, VRSS_SEND_TAB_SIZE); + u16 hash; int new_idx; + if (sk) + skb_set_hash_from_sk(skb, sk); + + hash = __skb_tx_hash(ndev, skb, VRSS_SEND_TAB_SIZE); + new_idx = net_device_ctx->tx_send_table[hash] % num_tx_queues; if (q_idx != new_idx && sk && -- 1.7.1