Commit 38be0a34 authored Mar 14, 2014 by Eric W. Biederman Committed by David S. Miller Mar 14, 2014

mlx4: Don't receive packets when the napi budget == 0



Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 21ceda26

drivers/net/ethernet/mellanox/mlx4/en_rx.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -661,6 +661,9 @@ int mlx4_en_process_rx_cq(struct net_device dev, struct mlx4_en_cq cq, int bud
		if (!priv->port_up)
		return 0;

		if (budget <= 0)
		return polled;

		/* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx
		* descriptor offset can be deduced from the CQE index instead of
		* reading 'cqe->index' */