net: hns3: change SSU's buffer allocation according to UM

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Currently when there is share buffer in the SSU(storage
switching unit), the low waterline for RX private buffer is
too low to keep the hardware running. Hardware may have
processed all the packet stored in the private buffer of the
low waterline before the new packet comes, because hardware
only tell the peer send packet again when the private buffer
is under the low waterline.

So this patch only allocate RX private buffer if there is
enough buffer according to hardware user manual.

This patch also reserve some buffer for reusing when TC num
is less than or equal to 2, and change PAUSE_TRANS_GAP &
HCLGE_NON_DCB_ADDITIONAL_BUF according to hardware user
manual.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Yunsheng Lin 2019-06-28 19:50:09 +08:00 • committed by David S. Miller

parent ae179b2f05

commit 9e15be90b8

3 changed files with 64 additions and 5 deletions

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2

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h

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65

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

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2

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.h

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