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Date: Sat, 8 Apr 2017 17:53:59 -0700 From: Haiyang Zhang <haiyangz@...hange.microsoft.com> To: davem@...emloft.net, netdev@...r.kernel.org Cc: haiyangz@...rosoft.com, kys@...rosoft.com, olaf@...fle.de, vkuznets@...hat.com, linux-kernel@...r.kernel.org Subject: [PATCH net-next,1/3] hv_netvsc: Use per socket hash when available From: Haiyang Zhang <haiyangz@...rosoft.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 <haiyangz@...rosoft.com> Reviewed-by: Stephen Hemminger <sthemmin@...rosoft.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
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