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net: hns3: fix get wrong pfc_en when query PFC configuration

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Currently, when query PFC configuration by dcbtool, driver will return
PFC enable status based on TC. As all priorities are mapped to TC0 by
default, if TC0 is enabled, then all priorities mapped to TC0 will be
shown as enabled status when query PFC setting, even though some
priorities have never been set.

for example:
$ dcb pfc show dev eth0
pfc-cap 4 macsec-bypass off delay 0
prio-pfc 0:off 1:off 2:off 3:off 4:off 5:off 6:off 7:off
$ dcb pfc set dev eth0 prio-pfc 0:on 1:on 2:on 3:on
$ dcb pfc show dev eth0
pfc-cap 4 macsec-bypass off delay 0
prio-pfc 0:on 1:on 2:on 3:on 4:on 5:on 6:on 7:on

To fix this problem, just returns user's PFC config parameter saved in
driver.

Fixes: cacde272dd ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Guangbin Huang 2021-08-26 19:22:01 +08:00 committed by Jakub Kicinski
parent 3462207d2d
commit 8c1671e0d1
1 changed files with 2 additions and 11 deletions
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13
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
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@ -255,21 +255,12 @@ static int hclge_ieee_getpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
u64 requests[HNAE3_MAX_TC], indications[HNAE3_MAX_TC];
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
u8 i, j, pfc_map, *prio_tc;
int ret;
u8 i;
memset(pfc, 0, sizeof(*pfc));
pfc->pfc_cap = hdev->pfc_max;
prio_tc = hdev->tm_info.prio_tc;
pfc_map = hdev->tm_info.hw_pfc_map;
/* Pfc setting is based on TC */
for (i = 0; i < hdev->tm_info.num_tc; i++) {
for (j = 0; j < HNAE3_MAX_USER_PRIO; j++) {
if ((prio_tc[j] == i) && (pfc_map & BIT(i)))
pfc->pfc_en |= BIT(j);
}
}
pfc->pfc_en = hdev->tm_info.pfc_en;
ret = hclge_pfc_tx_stats_get(hdev, requests);
if (ret)