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s2io: 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>
This commit is contained in:
Eric W. Biederman 2014-03-14 18:06:26 -07:00 committed by David S. Miller
parent 38be0a347c
commit 99a09c26a8
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/neterion/s2io.c
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@ -2914,6 +2914,9 @@ static int rx_intr_handler(struct ring_info *ring_data, int budget)
struct RxD1 *rxdp1; struct RxD1 *rxdp1;
struct RxD3 *rxdp3; struct RxD3 *rxdp3;
if (budget <= 0)
return napi_pkts;
get_info = ring_data->rx_curr_get_info; get_info = ring_data->rx_curr_get_info;
get_block = get_info.block_index; get_block = get_info.block_index;
memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info)); memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));