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Commit b4c296f9 authored by Jason Gunthorpe's avatar Jason Gunthorpe
Browse files

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: default avatarParav Pandit <parav@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 0a3173a5

include/rdma/ib_cache.h

+0 −24
Original line number Diff line number Diff line
@@ -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 */

net/smc/smc_ib.c

+25 −23
Original line number Diff line number Diff line
@@ -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;

}