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Commit b846f25a authored by Eli Cohen's avatar Eli Cohen Committed by Roland Dreier
Browse files

IB/core: Add creation flags to struct ib_qp_init_attr 



Add a create_flags member to struct ib_qp_init_attr that will allow a
kernel verbs consumer to create a pass special flags when creating a QP.
Add a flag value for telling low-level drivers that a QP will be used
for IPoIB UD LSO.  The create_flags member will also be useful for XRC
and ehca low-latency QP support.

Since no create_flags handling is implemented yet, add code to all
low-level drivers to return -EINVAL if create_flags is non-zero.

Signed-off-by: default avatarEli Cohen <eli@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent d84e0b28

drivers/infiniband/core/uverbs_cmd.c

+1 −0
Original line number Diff line number Diff line
@@ -1065,6 +1065,7 @@ ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, 
	attr.srq           = srq;

	attr.sq_sig_type   = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;

	attr.qp_type       = cmd.qp_type;

	attr.create_flags  = 0;



	attr.cap.max_send_wr     = cmd.max_send_wr;

	attr.cap.max_recv_wr     = cmd.max_recv_wr;

drivers/infiniband/hw/amso1100/c2_provider.c

+3 −0
Original line number Diff line number Diff line
@@ -245,6 +245,9 @@ static struct ib_qp *c2_create_qp(struct ib_pd *pd, 


	pr_debug("%s:%u\n", __func__, __LINE__);



	if (init_attr->create_flags)

		return ERR_PTR(-EINVAL);



	switch (init_attr->qp_type) {

	case IB_QPT_RC:

		qp = kzalloc(sizeof(*qp), GFP_KERNEL);

drivers/infiniband/hw/ehca/ehca_qp.c

+3 −0
Original line number Diff line number Diff line
@@ -421,6 +421,9 @@ static struct ehca_qp *internal_create_qp( 
	u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;

	unsigned long flags;



	if (init_attr->create_flags)

		return ERR_PTR(-EINVAL);



	memset(&parms, 0, sizeof(parms));

	qp_type = init_attr->qp_type;

drivers/infiniband/hw/ipath/ipath_qp.c

+5 −0
Original line number Diff line number Diff line
@@ -747,6 +747,11 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, 
	size_t sz;

	struct ib_qp *ret;



	if (init_attr->create_flags) {

		ret = ERR_PTR(-EINVAL);

		goto bail;

	}



	if (init_attr->cap.max_send_sge > ib_ipath_max_sges ||

	    init_attr->cap.max_send_wr > ib_ipath_max_qp_wrs) {

		ret = ERR_PTR(-EINVAL);

drivers/infiniband/hw/mlx4/qp.c

+3 −0
Original line number Diff line number Diff line
@@ -673,6 +673,9 @@ struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd, 
	struct mlx4_ib_qp *qp;

	int err;



	if (init_attr->create_flags)

		return ERR_PTR(-EINVAL);



	switch (init_attr->qp_type) {

	case IB_QPT_RC:

	case IB_QPT_UC: