From: Stephen Hemminger Date: Tue, 31 Mar 2020 17:14:04 +0000 (-0700) Subject: net/netvsc: avoid possible live lock X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=36274f287103d2f4a372a99dff2c4f47eeb75633;p=dpdk.git net/netvsc: avoid possible live lock Since the ring buffer with host is shared for both transmit completions and receive packets, it is possible that transmitter could get starved if receive ring gets full. Better to process all outstanding events which frees up transmit buffer slots, even if means dropping some packets. Fixes: 7e6c82430702 ("net/netvsc: avoid over filling Rx descriptor ring") Cc: stable@dpdk.org Signed-off-by: Stephen Hemminger --- diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c index cbdfcc628b..19f00a0528 100644 --- a/drivers/net/netvsc/hn_rxtx.c +++ b/drivers/net/netvsc/hn_rxtx.c @@ -1032,9 +1032,6 @@ retry: if (tx_limit && tx_done >= tx_limit) break; - - if (rxq->rx_ring && rte_ring_full(rxq->rx_ring)) - break; } if (bytes_read > 0)