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IB/mlx4: Support modify_qp for RoCE v2

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In order to support modify_qp for RoCE v2, we need to set
the gid_type in the QP context.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Moni Shoua 2016-01-14 17:50:39 +02:00 committed by Doug Ledford
parent 7ead4bcb1b
commit 3b5daf28ac
2 changed files with 35 additions and 4 deletions
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37
drivers/infiniband/hw/mlx4/qp.c
View file

@ -1509,6 +1509,24 @@ static int create_qp_lb_counter(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
return 0;
}
enum {
MLX4_QPC_ROCE_MODE_1 = 0,
MLX4_QPC_ROCE_MODE_2 = 2,
MLX4_QPC_ROCE_MODE_UNDEFINED = 0xff
};
static u8 gid_type_to_qpc(enum ib_gid_type gid_type)
{
switch (gid_type) {
case IB_GID_TYPE_ROCE:
return MLX4_QPC_ROCE_MODE_1;
case IB_GID_TYPE_ROCE_UDP_ENCAP:
return MLX4_QPC_ROCE_MODE_2;
default:
return MLX4_QPC_ROCE_MODE_UNDEFINED;
}
}
static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
const struct ib_qp_attr *attr, int attr_mask,
enum ib_qp_state cur_state, enum ib_qp_state new_state)
@ -1652,9 +1670,10 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
u16 vlan = 0xffff;
u8 smac[ETH_ALEN];
int status = 0;
int is_eth = rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
attr->ah_attr.ah_flags & IB_AH_GRH;
if (rdma_cap_eth_ah(&dev->ib_dev, port_num) &&
attr->ah_attr.ah_flags & IB_AH_GRH) {
if (is_eth) {
int index = attr->ah_attr.grh.sgid_index;
status = ib_get_cached_gid(ibqp->device, port_num,
@ -1676,6 +1695,18 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH |
MLX4_QP_OPTPAR_SCHED_QUEUE);
if (is_eth &&
(cur_state == IB_QPS_INIT && new_state == IB_QPS_RTR)) {
u8 qpc_roce_mode = gid_type_to_qpc(gid_attr.gid_type);
if (qpc_roce_mode == MLX4_QPC_ROCE_MODE_UNDEFINED) {
err = -EINVAL;
goto out;
}
context->rlkey_roce_mode |= (qpc_roce_mode << 6);
}
}
if (attr_mask & IB_QP_TIMEOUT) {
@ -1847,7 +1878,7 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
sqd_event = 0;
if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
context->rlkey |= (1 << 4);
context->rlkey_roce_mode |= (1 << 4);
/*
* Before passing a kernel QP to the HW, make sure that the

2
include/linux/mlx4/qp.h
View file

@ -194,7 +194,7 @@ struct mlx4_qp_context {
u8 mtu_msgmax;
u8 rq_size_stride;
u8 sq_size_stride;
u8 rlkey;
u8 rlkey_roce_mode;
__be32 usr_page;
__be32 local_qpn;
__be32 remote_qpn;