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net/mlx4_core: Add UPDATE_QP SRIOV wrapper support

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This patch adds UPDATE_QP SRIOV wrapper support.

The mechanism is a general one, but currently only source MAC
index changes are allowed for VFs.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matan Barak 2014-05-15 15:29:27 +03:00 committed by David S. Miller
parent 81c708068d
commit ce8d9e0d67
5 changed files with 108 additions and 2 deletions
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4
drivers/net/ethernet/mellanox/mlx4/cmd.c
View file

@ -1253,12 +1253,12 @@ static struct mlx4_cmd_info cmd_info[] = {
},
{
.opcode = MLX4_CMD_UPDATE_QP,
.has_inbox = false,
.has_inbox = true,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_CMD_EPERM_wrapper
.wrapper = mlx4_UPDATE_QP_wrapper
},
{
.opcode = MLX4_CMD_GET_OP_REQ,

6
drivers/net/ethernet/mellanox/mlx4/mlx4.h
View file

@ -1195,6 +1195,12 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
int mlx4_UPDATE_QP_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,

35
drivers/net/ethernet/mellanox/mlx4/qp.c
View file

@ -389,6 +389,41 @@ int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp)
EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
#define MLX4_UPDATE_QP_SUPPORTED_ATTRS MLX4_UPDATE_QP_SMAC
int mlx4_update_qp(struct mlx4_dev *dev, struct mlx4_qp *qp,
enum mlx4_update_qp_attr attr,
struct mlx4_update_qp_params *params)
{
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_update_qp_context *cmd;
u64 pri_addr_path_mask = 0;
int err = 0;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
cmd = (struct mlx4_update_qp_context *)mailbox->buf;
if (!attr || (attr & ~MLX4_UPDATE_QP_SUPPORTED_ATTRS))
return -EINVAL;
if (attr & MLX4_UPDATE_QP_SMAC) {
pri_addr_path_mask |= 1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX;
cmd->qp_context.pri_path.grh_mylmc = params->smac_index;
}
cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask);
err = mlx4_cmd(dev, mailbox->dma, qp->qpn & 0xffffff, 0,
MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
EXPORT_SYMBOL_GPL(mlx4_update_qp);
void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp)
{
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;

54
drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
View file

@ -3895,6 +3895,60 @@ static int add_eth_header(struct mlx4_dev *dev, int slave,
}
#define MLX4_UPD_QP_PATH_MASK_SUPPORTED (1ULL << MLX4_UPD_QP_PATH_MASK_MAC_INDEX)
int mlx4_UPDATE_QP_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd_info)
{
int err;
u32 qpn = vhcr->in_modifier & 0xffffff;
struct res_qp *rqp;
u64 mac;
unsigned port;
u64 pri_addr_path_mask;
struct mlx4_update_qp_context *cmd;
int smac_index;
cmd = (struct mlx4_update_qp_context *)inbox->buf;
pri_addr_path_mask = be64_to_cpu(cmd->primary_addr_path_mask);
if (cmd->qp_mask || cmd->secondary_addr_path_mask ||
(pri_addr_path_mask & ~MLX4_UPD_QP_PATH_MASK_SUPPORTED))
return -EPERM;
/* Just change the smac for the QP */
err = get_res(dev, slave, qpn, RES_QP, &rqp);
if (err) {
mlx4_err(dev, "Updating qpn 0x%x for slave %d rejected\n", qpn, slave);
return err;
}
port = (rqp->sched_queue >> 6 & 1) + 1;
smac_index = cmd->qp_context.pri_path.grh_mylmc;
err = mac_find_smac_ix_in_slave(dev, slave, port,
smac_index, &mac);
if (err) {
mlx4_err(dev, "Failed to update qpn 0x%x, MAC is invalid. smac_ix: %d\n",
qpn, smac_index);
goto err_mac;
}
err = mlx4_cmd(dev, inbox->dma,
vhcr->in_modifier, 0,
MLX4_CMD_UPDATE_QP, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (err) {
mlx4_err(dev, "Failed to update qpn on qpn 0x%x, command failed\n", qpn);
goto err_mac;
}
err_mac:
put_res(dev, slave, qpn, RES_QP);
return err;
}
int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,

11
include/linux/mlx4/qp.h
View file

@ -421,6 +421,17 @@ struct mlx4_wqe_inline_seg {
__be32 byte_count;
};
enum mlx4_update_qp_attr {
MLX4_UPDATE_QP_SMAC = 1 << 0,
};
struct mlx4_update_qp_params {
u8 smac_index;
};
int mlx4_update_qp(struct mlx4_dev *dev, struct mlx4_qp *qp,
enum mlx4_update_qp_attr attr,
struct mlx4_update_qp_params *params);
int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,