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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2014-03-14 18:03:23 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-03-14 22:52:47 -0400 |
| commit | 9b2c05713edb56a338536ab26541e155763c0961 (patch) | |
| tree | 1cb8b388f0bc09607572b09a41f1cba3b89d85de | |
| parent | enic: Don't receive packets when the napi budget == 0 (diff) | |
| download | linux-dev-9b2c05713edb56a338536ab26541e155763c0961.tar.xz linux-dev-9b2c05713edb56a338536ab26541e155763c0961.zip | |
fs_enet: 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>
| -rw-r--r-- | drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c index 62f042d4aaa9..dc80db41d6b3 100644 --- a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c +++ b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c @@ -91,6 +91,9 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget) u16 pkt_len, sc; int curidx; + if (budget <= 0) + return received; + /* * First, grab all of the stats for the incoming packet. * These get messed up if we get called due to a busy condition. |