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net: hns3: reallocate SSU' buffer size when pfc_en changes

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When a TC's PFC is disabled or enabled, the RX private buffer for
this TC need to be changed too, otherwise this may cause packet
dropped problem.

This patch fixes it by calling hclge_buffer_alloc to reallocate
buffer when pfc_en changes.

Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Yunsheng Lin <linyunsheng@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
2019-11-14 10:32:40 +08:00
committed by David S. Miller
parent 71c5e83bcf
commit aea8cfb35a
1 changed files with 16 additions and 1 deletions
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17
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
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@ -318,6 +318,7 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
struct net_device *netdev = h->kinfo.netdev;
struct hclge_dev *hdev = vport->back;
u8 i, j, pfc_map, *prio_tc;
int ret;
if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
@ -347,7 +348,21 @@ static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
hclge_tm_pfc_info_update(hdev);
return hclge_pause_setup_hw(hdev, false);
ret = hclge_pause_setup_hw(hdev, false);
if (ret)
return ret;
ret = hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
if (ret)
return ret;
ret = hclge_buffer_alloc(hdev);
if (ret) {
hclge_notify_client(hdev, HNAE3_UP_CLIENT);
return ret;
}
return hclge_notify_client(hdev, HNAE3_UP_CLIENT);
}
/* DCBX configuration */