bnxt_en: Improve -ENOMEM logic in NAPI poll loop.
authorMichael Chan <michael.chan@broadcom.com>
Mon, 28 Aug 2017 17:40:30 +0000 (13:40 -0400)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Aug 2017 23:57:10 +0000 (16:57 -0700)
commit903649e718f80da2ba4b65a0adf6930219b4b2e5
tree880db9002dc26dea7cc3977efa84c309e4d9f26b
parent27573a7d905a49dc756fda9c0e148372136356e6
bnxt_en: Improve -ENOMEM logic in NAPI poll loop.

If we cannot allocate RX buffers in the NAPI poll loop when processing
an RX event, the current code does not count that event towards the NAPI
budget.  This can cause us to potentially loop forever in NAPI if we
consistently cannot allocate new buffers.  Improve it by counting
-ENOMEM event as 1 towards the NAPI budget.

Cc: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reported-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/broadcom/bnxt/bnxt.c