Commit 75363a46 authored by Eric W. Biederman's avatar Eric W. Biederman Committed by David S. Miller

sfc: 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 c7b82cc8
...@@ -1955,6 +1955,9 @@ static int efx_ef10_ev_process(struct efx_channel *channel, int quota) ...@@ -1955,6 +1955,9 @@ static int efx_ef10_ev_process(struct efx_channel *channel, int quota)
int tx_descs = 0; int tx_descs = 0;
int spent = 0; int spent = 0;
if (quota <= 0)
return spent;
read_ptr = channel->eventq_read_ptr; read_ptr = channel->eventq_read_ptr;
for (;;) { for (;;) {
......
...@@ -1248,6 +1248,9 @@ int efx_farch_ev_process(struct efx_channel *channel, int budget) ...@@ -1248,6 +1248,9 @@ int efx_farch_ev_process(struct efx_channel *channel, int budget)
int tx_packets = 0; int tx_packets = 0;
int spent = 0; int spent = 0;
if (budget <= 0)
return spent;
read_ptr = channel->eventq_read_ptr; read_ptr = channel->eventq_read_ptr;
for (;;) { for (;;) {
......
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