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Date: Wed, 6 May 2015 05:30:36 -0400 From: Sathya Perla <sathya.perla@...gotech.com> To: netdev@...r.kernel.org Subject: [PATCH v2 net-next 5/9] be2net: post full RXQ on interface enable From: Suresh Reddy <Suresh.Reddy@...gotech.com> When an RXQ is created in be_open(), the driver currently posts only 64 buffers. This sometimes results in packet drops when there is a traffic burst as soon as the interface is enabled. This patch fixes this problem by posting the full RXQ on interface enable. Signed-off-by: Suresh Reddy <Suresh.Reddy@...gotech.com> Signed-off-by: Sathya Perla <sathya.perla@...gotech.com> --- drivers/net/ethernet/emulex/benet/be_main.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index b25c509..5611466 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -3324,9 +3324,12 @@ static int be_rx_qs_create(struct be_adapter *adapter) memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN); - /* First time posting */ + /* Post 1 less than RXQ-len to avoid head being equal to tail, + * which is a queue empty condition + */ for_all_rx_queues(adapter, rxo, i) - be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST); + be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1); + return 0; } -- 2.2.0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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