Patch "RDMA/hns: Fix ah error counter in sw stat not increasing" has been added to the 6.11-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    RDMA/hns: Fix ah error counter in sw stat not increasing

to the 6.11-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     rdma-hns-fix-ah-error-counter-in-sw-stat-not-increas.patch
and it can be found in the queue-6.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit bc20d9f9193caadcb31d693901eac855daeb3b13
Author: Junxian Huang <huangjunxian6@xxxxxxxxxxxxx>
Date:   Thu Sep 12 19:57:00 2024 +0800

    RDMA/hns: Fix ah error counter in sw stat not increasing
    
    [ Upstream commit 39c047d4047a1242aeefa87513174b56a91080ab ]
    
    There are several error cases where hns_roce_create_ah() returns
    directly without jumping to sw stat path, thus leading to a problem
    that the ah error counter does not increase.
    
    Fixes: ee20cc17e9d8 ("RDMA/hns: Support DSCP")
    Fixes: eb7854d63db5 ("RDMA/hns: Support SW stats with debugfs")
    Signed-off-by: Junxian Huang <huangjunxian6@xxxxxxxxxxxxx>
    Link: https://patch.msgid.link/20240912115700.2016443-1-huangjunxian6@xxxxxxxxxxxxx
    Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
index 3e02c474f59fe..4fc5b9d5fea87 100644
--- a/drivers/infiniband/hw/hns/hns_roce_ah.c
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -64,8 +64,10 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
 	u8 tc_mode = 0;
 	int ret;
 
-	if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata)
-		return -EOPNOTSUPP;
+	if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata) {
+		ret = -EOPNOTSUPP;
+		goto err_out;
+	}
 
 	ah->av.port = rdma_ah_get_port_num(ah_attr);
 	ah->av.gid_index = grh->sgid_index;
@@ -83,7 +85,7 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
 		ret = 0;
 
 	if (ret && grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
-		return ret;
+		goto err_out;
 
 	if (tc_mode == HNAE3_TC_MAP_MODE_DSCP &&
 	    grh->sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP)
@@ -91,8 +93,10 @@ int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
 	else
 		ah->av.sl = rdma_ah_get_sl(ah_attr);
 
-	if (!check_sl_valid(hr_dev, ah->av.sl))
-		return -EINVAL;
+	if (!check_sl_valid(hr_dev, ah->av.sl)) {
+		ret = -EINVAL;
+		goto err_out;
+	}
 
 	memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE);
 	memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN);