https://github.com/torvalds/linux
Revision 68752b24f51a71d4f350a764d890b670f59062c5 authored by Yunsheng Lin on 19 October 2021, 14:16:33 UTC, committed by David S. Miller on 20 October 2021, 10:38:11 UTC
Currently when there is a rx page allocation failure, it is
possible that polling may be stopped if there is no more packet
to be reveiced, which may cause queue stall problem under memory
pressure.

This patch makes sure polling is scheduled again when there is
any rx page allocation failure, and polling will try to allocate
receive buffers until it succeeds.

Now the allocation retry is added, it is unnecessary to do the rx
page allocation at the end of rx cleaning, so remove it. And reset
the unused_count to zero after calling hns3_nic_alloc_rx_buffers()
to avoid calling hns3_nic_alloc_rx_buffers() repeatedly under
memory pressure.

Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 9f9f0f1
History
Tip revision: 68752b24f51a71d4f350a764d890b670f59062c5 authored by Yunsheng Lin on 19 October 2021, 14:16:33 UTC
net: hns3: schedule the polling again when allocation fails
Tip revision: 68752b2
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