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Date: Fri, 17 Aug 2018 20:17:07 -0600
From: Jason Gunthorpe <jgg@...lanox.com>
To: Ursula Braun <ubraun@...ux.ibm.com>
Cc: linux-rdma@...r.kernel.org, Parav Pandit <parav@...lanox.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/smc: Replace ib_query_gid with rdma_get_gid_attr
All RDMA ULPs should be using rdma_get_gid_attr instead of
ib_query_gid. Convert SMC to use the new API.
In the process correct some confusion with gid_type - if attr->ndev is
!NULL then gid_type can never be IB_GID_TYPE_IB by
definition. IB_GID_TYPE_ROCE shares the same enum value and is probably
what was intended here.
Reviewed-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
---
include/rdma/ib_cache.h | 24 ---------------------
net/smc/smc_ib.c | 48 +++++++++++++++++++++--------------------
2 files changed, 25 insertions(+), 47 deletions(-)
This is intended to go this merge window (ie in the next 4 days) to
remove the wrong-headed __deprecated warning. If there is no objection
I'll send it via the rdma tree.
Thanks,
Jason
diff --git a/include/rdma/ib_cache.h b/include/rdma/ib_cache.h
index 3e11e7cc60b745..62e990b620aaf7 100644
--- a/include/rdma/ib_cache.h
+++ b/include/rdma/ib_cache.h
@@ -133,28 +133,4 @@ const struct ib_gid_attr *rdma_get_gid_attr(struct ib_device *device,
void rdma_put_gid_attr(const struct ib_gid_attr *attr);
void rdma_hold_gid_attr(const struct ib_gid_attr *attr);
-/*
- * This is to be removed. It only exists to make merging rdma and smc simpler.
- */
-static inline __deprecated int ib_query_gid(struct ib_device *device,
- u8 port_num, int index,
- union ib_gid *gid,
- struct ib_gid_attr *attr_out)
-{
- const struct ib_gid_attr *attr;
-
- memset(attr_out, 0, sizeof(*attr_out));
- attr = rdma_get_gid_attr(device, port_num, index);
- if (IS_ERR(attr))
- return PTR_ERR(attr);
-
- if (attr->ndev)
- dev_hold(attr->ndev);
- *attr_out = *attr;
-
- rdma_put_gid_attr(attr);
-
- return 0;
-}
-
#endif /* _IB_CACHE_H */
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index 9bb5274a244e83..e519ef29c0ffcb 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -145,17 +145,21 @@ int smc_ib_ready_link(struct smc_link *lnk)
static int smc_ib_fill_mac(struct smc_ib_device *smcibdev, u8 ibport)
{
- struct ib_gid_attr gattr;
- union ib_gid gid;
- int rc;
+ const struct ib_gid_attr *attr;
+ int rc = 0;
- rc = ib_query_gid(smcibdev->ibdev, ibport, 0, &gid, &gattr);
- if (rc || !gattr.ndev)
+ attr = rdma_get_gid_attr(smcibdev->ibdev, ibport, 0);
+ if (IS_ERR(attr))
return -ENODEV;
- memcpy(smcibdev->mac[ibport - 1], gattr.ndev->dev_addr, ETH_ALEN);
- dev_put(gattr.ndev);
- return 0;
+ if (attr->ndev)
+ memcpy(smcibdev->mac[ibport - 1], attr->ndev->dev_addr,
+ ETH_ALEN);
+ else
+ rc = -ENODEV;
+
+ rdma_put_gid_attr(attr);
+ return rc;
}
/* Create an identifier unique for this instance of SMC-R.
@@ -180,29 +184,27 @@ bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport)
int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport,
unsigned short vlan_id, u8 gid[], u8 *sgid_index)
{
- struct ib_gid_attr gattr;
- union ib_gid _gid;
+ const struct ib_gid_attr *attr;
int i;
for (i = 0; i < smcibdev->pattr[ibport - 1].gid_tbl_len; i++) {
- memset(&_gid, 0, SMC_GID_SIZE);
- memset(&gattr, 0, sizeof(gattr));
- if (ib_query_gid(smcibdev->ibdev, ibport, i, &_gid, &gattr))
+ attr = rdma_get_gid_attr(smcibdev->ibdev, ibport, i);
+ if (IS_ERR(attr))
continue;
- if (!gattr.ndev)
- continue;
- if (((!vlan_id && !is_vlan_dev(gattr.ndev)) ||
- (vlan_id && is_vlan_dev(gattr.ndev) &&
- vlan_dev_vlan_id(gattr.ndev) == vlan_id)) &&
- gattr.gid_type == IB_GID_TYPE_IB) {
+
+ if (attr->ndev &&
+ ((!vlan_id && !is_vlan_dev(attr->ndev)) ||
+ (vlan_id && is_vlan_dev(attr->ndev) &&
+ vlan_dev_vlan_id(attr->ndev) == vlan_id)) &&
+ attr->gid_type == IB_GID_TYPE_ROCE) {
if (gid)
- memcpy(gid, &_gid, SMC_GID_SIZE);
+ memcpy(gid, &attr->gid, SMC_GID_SIZE);
if (sgid_index)
- *sgid_index = i;
- dev_put(gattr.ndev);
+ *sgid_index = attr->index;
+ rdma_put_gid_attr(attr);
return 0;
}
- dev_put(gattr.ndev);
+ rdma_put_gid_attr(attr);
}
return -ENODEV;
}
--
2.18.0
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