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Commit 57ba34c9 authored by Eric W. Biederman's avatar Eric W. Biederman Committed by David S. Miller
Browse files

igb: 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: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 390f86df

drivers/net/ethernet/intel/igb/igb_main.c

+2 −2
Original line number Diff line number Diff line
@@ -6946,7 +6946,7 @@ static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) 
	unsigned int total_bytes = 0, total_packets = 0;

	u16 cleaned_count = igb_desc_unused(rx_ring);



	do {

	while (likely(total_packets < budget)) {

		union e1000_adv_rx_desc *rx_desc;



		/* return some buffers to hardware, one at a time is too slow */
@@ -6998,7 +6998,7 @@ static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) 


		/* update budget accounting */

		total_packets++;

	} while (likely(total_packets < budget));

	}



	/* place incomplete frames back on ring for completion */

	rx_ring->skb = skb;