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IB/mlx5: Support setting Ethernet priority for Raw Packet QPs

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When the user changes the Address Vector(AV) in the modify QP, he
provides an SL. This SL should be translated to Ethernet Priority
by taking the 3 LSB bits, and modify the QP's TIS according to this
Ethernet priority.

Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
majd@mellanox.com 2016-01-14 19:13:06 +02:00 committed by Doug Ledford
parent 6d2f89df04
commit 75850d0bce
4 changed files with 57 additions and 4 deletions
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38
drivers/infiniband/hw/mlx5/qp.c
View File

@ -1752,7 +1752,33 @@ static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
return rate + MLX5_STAT_RATE_OFFSET;
}
static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah,
static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
struct mlx5_ib_sq *sq, u8 sl)
{
void *in;
void *tisc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
kvfree(in);
return err;
}
static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
const struct ib_ah_attr *ah,
struct mlx5_qp_path *path, u8 port, int attr_mask,
u32 path_flags, const struct ib_qp_attr *attr)
{
@ -1808,6 +1834,11 @@ static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah,
if (attr_mask & IB_QP_TIMEOUT)
path->ackto_lt = attr->timeout << 3;
if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
return modify_raw_packet_eth_prio(dev->mdev,
&qp->raw_packet_qp.sq,
ah->sl & 0xf);
return 0;
}
@ -2029,7 +2060,7 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
context->pri_path.port = attr->port_num;
if (attr_mask & IB_QP_AV) {
err = mlx5_set_path(dev, &attr->ah_attr, &context->pri_path,
err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
attr_mask, 0, attr);
if (err)
@ -2040,7 +2071,8 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
context->pri_path.ackto_lt |= attr->timeout << 3;
if (attr_mask & IB_QP_ALT_PATH) {
err = mlx5_set_path(dev, &attr->alt_ah_attr, &context->alt_path,
err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
&context->alt_path,
attr->alt_port_num, attr_mask, 0, attr);
if (err)
goto out;

12
drivers/net/ethernet/mellanox/mlx5/core/transobj.c
View File

@ -235,6 +235,18 @@ int mlx5_core_create_tis(struct mlx5_core_dev *dev, u32 *in, int inlen,
}
EXPORT_SYMBOL(mlx5_core_create_tis);
int mlx5_core_modify_tis(struct mlx5_core_dev *dev, u32 tisn, u32 *in,
int inlen)
{
u32 out[MLX5_ST_SZ_DW(modify_tis_out)] = {0};
MLX5_SET(modify_tis_in, in, tisn, tisn);
MLX5_SET(modify_tis_in, in, opcode, MLX5_CMD_OP_MODIFY_TIS);
return mlx5_cmd_exec_check_status(dev, in, inlen, out, sizeof(out));
}
EXPORT_SYMBOL(mlx5_core_modify_tis);
void mlx5_core_destroy_tis(struct mlx5_core_dev *dev, u32 tisn)
{
u32 in[MLX5_ST_SZ_DW(destroy_tis_in)];

9
include/linux/mlx5/mlx5_ifc.h
View File

@ -4052,6 +4052,13 @@ struct mlx5_ifc_modify_tis_out_bits {
u8 reserved_1[0x40];
};
struct mlx5_ifc_modify_tis_bitmask_bits {
u8 reserved_0[0x20];
u8 reserved_1[0x1f];
u8 prio[0x1];
};
struct mlx5_ifc_modify_tis_in_bits {
u8 opcode[0x10];
u8 reserved_0[0x10];
@ -4064,7 +4071,7 @@ struct mlx5_ifc_modify_tis_in_bits {
u8 reserved_3[0x20];
u8 modify_bitmask[0x40];
struct mlx5_ifc_modify_tis_bitmask_bits bitmask;
u8 reserved_4[0x40];

2
include/linux/mlx5/transobj.h
View File

@ -54,6 +54,8 @@ int mlx5_core_modify_tir(struct mlx5_core_dev *dev, u32 tirn, u32 *in,
void mlx5_core_destroy_tir(struct mlx5_core_dev *dev, u32 tirn);
int mlx5_core_create_tis(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *tisn);
int mlx5_core_modify_tis(struct mlx5_core_dev *dev, u32 tisn, u32 *in,
int inlen);
void mlx5_core_destroy_tis(struct mlx5_core_dev *dev, u32 tisn);
int mlx5_core_create_rmp(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *rmpn);