[for-next,v2,11/17] net/mlx5: cmdif, cmd_check refactoring

Message ID	20220223233930.319301-12-saeed@kernel.org (mailing list archive)
State	Not Applicable
Headers	show Return-Path: <linux-rdma-owner@kernel.org> From: Saeed Mahameed <saeed@kernel.org> To: "David S. Miller" <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>, Jason Gunthorpe <jgg@nvidia.com> Cc: Leon Romanovsky <leonro@nvidia.com>, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed <saeedm@mellanox.com>, Moshe Shemesh <moshe@nvidia.com>, Saeed Mahameed <saeedm@nvidia.com> Subject: [for-next v2 11/17] net/mlx5: cmdif, cmd_check refactoring Date: Wed, 23 Feb 2022 15:39:24 -0800 Message-Id: <20220223233930.319301-12-saeed@kernel.org> In-Reply-To: <20220223233930.319301-1-saeed@kernel.org> References: <20220223233930.319301-1-saeed@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	[for-next,v2,01/17] mlx5: remove unused static inlines \| expand [for-next,v2,01/17] mlx5: remove unused static inlines [for-next,v2,02/17] net/mlx5: Add ability to insert to specific flow group [for-next,v2,03/17] net/mlx5: E-Switch, reserve and use same uplink metadata across ports [for-next,v2,04/17] net/mlx5: E-switch, remove special uplink ingress ACL handling [for-next,v2,05/17] net/mlx5: E-switch, add drop rule support to ingress ACL [for-next,v2,06/17] net/mlx5: Lag, use local variable already defined to access E-Switch [for-next,v2,07/17] net/mlx5: Lag, don't use magic numbers for ports [for-next,v2,08/17] net/mlx5: Lag, record inactive state of bond device [for-next,v2,09/17] net/mlx5: Lag, offload active-backup drops to hardware [for-next,v2,10/17] net/mlx5: cmdif, Return value improvements [for-next,v2,11/17] net/mlx5: cmdif, cmd_check refactoring [for-next,v2,12/17] net/mlx5: cmdif, Add new api for command execution [for-next,v2,13/17] net/mlx5: Use mlx5_cmd_do() in core create_{cq,dct} [for-next,v2,14/17] net/mlx5: cmdif, Refactor error handling and reporting of async commands [for-next,v2,15/17] RDMA/mlx5: Use new command interface API [for-next,v2,16/17] net/mlx5: Add reset_state field to MFRL register [for-next,v2,17/17] net/mlx5: Add clarification on sync reset failure

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c index 3c6a533ee0c9..7ff01b901f53 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -760,43 +760,61 @@ struct mlx5_ifc_mbox_in_bits { u8 reserved_at_40[0x40]; }; -void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome) -{ - *status = MLX5_GET(mbox_out, out, status); - *syndrome = MLX5_GET(mbox_out, out, syndrome); -} - -static int mlx5_cmd_check(struct mlx5_core_dev *dev, void *in, void *out) +static void cmd_status_print(struct mlx5_core_dev *dev, void *in, void *out) { + u16 opcode, op_mod; u32 syndrome; u8 status; - u16 opcode; - u16 op_mod; u16 uid; + int err; - mlx5_cmd_mbox_status(out, &status, &syndrome); - if (!status) - return 0; + syndrome = MLX5_GET(mbox_out, out, syndrome); + status = MLX5_GET(mbox_out, out, status); opcode = MLX5_GET(mbox_in, in, opcode); op_mod = MLX5_GET(mbox_in, in, op_mod); uid = MLX5_GET(mbox_in, in, uid); + err = cmd_status_to_err(status); + if (!uid && opcode != MLX5_CMD_OP_DESTROY_MKEY) mlx5_core_err_rl(dev, - "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x)\n", + "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x), err(%d)\n", mlx5_command_str(opcode), opcode, op_mod, - cmd_status_str(status), status, syndrome); + cmd_status_str(status), status, syndrome, err); else mlx5_core_dbg(dev, - "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x)\n", - mlx5_command_str(opcode), - opcode, op_mod, - cmd_status_str(status), - status, - syndrome); + "%s(0x%x) op_mod(0x%x) uid(%d) failed, status %s(0x%x), syndrome (0x%x), err(%d)\n", + mlx5_command_str(opcode), opcode, op_mod, uid, + cmd_status_str(status), status, syndrome, err); +} + +static int mlx5_cmd_check(struct mlx5_core_dev *dev, int err, void *in, void *out) +{ + /* aborted due to PCI error or via reset flow mlx5_cmd_trigger_completions() */ + if (err == -ENXIO) { + u16 opcode = MLX5_GET(mbox_in, in, opcode); + u32 syndrome; + u8 status; + + /* PCI Error, emulate command return status, for smooth reset */ + err = mlx5_internal_err_ret_value(dev, opcode, &syndrome, &status); + MLX5_SET(mbox_out, out, status, status); + MLX5_SET(mbox_out, out, syndrome, syndrome); + if (!err) + return 0; + } + + /* driver or FW delivery error */ + if (err) + return err; - return cmd_status_to_err(status); + /* check outbox status */ + err = cmd_status_to_err(MLX5_GET(mbox_out, out, status)); + if (err) + cmd_status_print(dev, in, out); + + return err; } static void dump_command(struct mlx5_core_dev *dev, @@ -980,13 +998,7 @@ static void cmd_work_handler(struct work_struct *work) /* Skip sending command to fw if internal error */ if (mlx5_cmd_is_down(dev) || !opcode_allowed(&dev->cmd, ent->op)) { - u8 status = 0; - u32 drv_synd; - - ent->ret = mlx5_internal_err_ret_value(dev, msg_to_opcode(ent->in), &drv_synd, &status); - MLX5_SET(mbox_out, ent->out, status, status); - MLX5_SET(mbox_out, ent->out, syndrome, drv_synd); - + ent->ret = -ENXIO; mlx5_cmd_comp_handler(dev, 1ULL << ent->idx, true); return; } @@ -1005,6 +1017,31 @@ static void cmd_work_handler(struct work_struct *work) } } +static int deliv_status_to_err(u8 status) +{ + switch (status) { + case MLX5_CMD_DELIVERY_STAT_OK: + case MLX5_DRIVER_STATUS_ABORTED: + return 0; + case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: + case MLX5_CMD_DELIVERY_STAT_TOK_ERR: + return -EBADR; + case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: + case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: + case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: + return -EFAULT; /* Bad address */ + case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: + case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: + case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: + case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: + return -ENOMSG; + case MLX5_CMD_DELIVERY_STAT_FW_ERR: + return -EIO; + default: + return -EINVAL; + } +} + static const char *deliv_status_to_str(u8 status) { switch (status) { @@ -1622,15 +1659,15 @@ static void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec, bool force ent->ts2 = ktime_get_ns(); memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out)); dump_command(dev, ent, 0); - if (!ent->ret) { + + if (vec & MLX5_TRIGGERED_CMD_COMP) + ent->ret = -ENXIO; + + if (!ent->ret) { /* Command completed by FW */ if (!cmd->checksum_disabled) ent->ret = verify_signature(ent); - else - ent->ret = 0; - if (vec & MLX5_TRIGGERED_CMD_COMP) - ent->status = MLX5_DRIVER_STATUS_ABORTED; - else - ent->status = ent->lay->status_own >> 1; + + ent->status = ent->lay->status_own >> 1; mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n", ent->ret, deliv_status_to_str(ent->status), ent->status); @@ -1649,14 +1686,13 @@ static void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec, bool force callback = ent->callback; context = ent->context; err = ent->ret; - if (!err) { + if (!err && !ent->status) { err = mlx5_copy_from_msg(ent->uout, ent->out, ent->uout_size); - err = err ? err : mlx5_cmd_check(dev, - ent->in->first.data, - ent->uout); + err = mlx5_cmd_check(dev, err, ent->in->first.data, + ent->uout); } mlx5_free_cmd_msg(dev, ent->out); @@ -1729,31 +1765,6 @@ void mlx5_cmd_flush(struct mlx5_core_dev *dev) up(&cmd->sem); } -static int deliv_status_to_err(u8 status) -{ - switch (status) { - case MLX5_CMD_DELIVERY_STAT_OK: - case MLX5_DRIVER_STATUS_ABORTED: - return 0; - case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: - case MLX5_CMD_DELIVERY_STAT_TOK_ERR: - return -EBADR; - case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: - case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: - case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: - return -EFAULT; /* Bad address */ - case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: - case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: - case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: - case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: - return -ENOMSG; - case MLX5_CMD_DELIVERY_STAT_FW_ERR: - return -EIO; - default: - return -EINVAL; - } -} - static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, gfp_t gfp) { @@ -1812,15 +1823,8 @@ static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, u8 token; int err; - if (mlx5_cmd_is_down(dev) || !opcode_allowed(&dev->cmd, opcode)) { - u32 drv_synd; - u8 status; - - err = mlx5_internal_err_ret_value(dev, opcode, &drv_synd, &status); - MLX5_SET(mbox_out, out, status, status); - MLX5_SET(mbox_out, out, syndrome, drv_synd); - return err; - } + if (mlx5_cmd_is_down(dev) || !opcode_allowed(&dev->cmd, opcode)) + return -ENXIO; pages_queue = is_manage_pages(in); gfp = callback ? GFP_ATOMIC : GFP_KERNEL; @@ -1865,13 +1869,24 @@ static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, return err; } +/** + * mlx5_cmd_exec - Executes a fw command, wait for completion + * + * @dev: mlx5 core device + * @in: inbox mlx5_ifc command buffer + * @in_size: inbox buffer size + * @out: outbox mlx5_ifc buffer + * @out_size: outbox size + * + * @return: 0 if no error, FW command execution was successful, + * and outbox status is ok. + */ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size) { - int err; + int err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, false); - err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, false); - return err ? : mlx5_cmd_check(dev, in, out); + return mlx5_cmd_check(dev, err, in, out); } EXPORT_SYMBOL(mlx5_cmd_exec); @@ -1932,11 +1947,9 @@ EXPORT_SYMBOL(mlx5_cmd_exec_cb); int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size) { - int err; - - err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, true); + int err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, true); - return err ? : mlx5_cmd_check(dev, in, out); + return mlx5_cmd_check(dev, err, in, out); } EXPORT_SYMBOL(mlx5_cmd_exec_polling); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 2c774f367199..cea1a8ac196e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -736,10 +736,9 @@ static int mlx5_core_set_issi(struct mlx5_core_dev *dev) MLX5_SET(query_issi_in, query_in, opcode, MLX5_CMD_OP_QUERY_ISSI); err = mlx5_cmd_exec_inout(dev, query_issi, query_in, query_out); if (err) { - u32 syndrome; - u8 status; + u32 syndrome = MLX5_GET(query_issi_out, query_out, syndrome); + u8 status = MLX5_GET(query_issi_out, query_out, status); - mlx5_cmd_mbox_status(query_out, &status, &syndrome); if (!status || syndrome == MLX5_DRIVER_SYND) { mlx5_core_err(dev, "Failed to query ISSI err(%d) status(%d) synd(%d)\n", err, status, syndrome); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 1b398c9e17b9..8a8408708e6c 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -981,7 +981,6 @@ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size); -void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome); bool mlx5_cmd_is_down(struct mlx5_core_dev *dev); int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type);

[for-next,v2,11/17] net/mlx5: cmdif, cmd_check refactoring

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