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Date: Tue, 5 Jun 2018 09:52:30 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: dsahern@...nel.org
Cc: netdev@...r.kernel.org, idosch@...lanox.com, jiri@...lanox.com,
jakub.kicinski@...ronome.com, David Ahern <dsahern@...il.com>
Subject: Re: [PATCH net-next 3/3] mlxsw: Add extack messages for
port_{un,}split failures.
Tue, Jun 05, 2018 at 12:15:03AM CEST, dsahern@...nel.org wrote:
>From: David Ahern <dsahern@...il.com>
>
>Return messages in extack for port split/unsplit errors. e.g.,
> $ devlink port split swp1s1 count 4
> Error: mlxsw_spectrum: Port cannot be split further.
> devlink answers: Invalid argument
>
> $ devlink port unsplit swp4
> Error: mlxsw_spectrum: Port was not split.
> devlink answers: Invalid argument
>
>Signed-off-by: David Ahern <dsahern@...il.com>
>---
> drivers/net/ethernet/mellanox/mlxsw/core.c | 14 ++++++++++----
> drivers/net/ethernet/mellanox/mlxsw/core.h | 5 +++--
> drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 13 +++++++++++--
> 3 files changed, 24 insertions(+), 8 deletions(-)
>
>diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
>index 7ed38d80bc08..f9c724752a32 100644
>--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
>+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
>@@ -775,11 +775,14 @@ static int mlxsw_devlink_port_split(struct devlink *devlink,
> {
> struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
>
>- if (port_index >= mlxsw_core->max_ports)
>+ if (port_index >= mlxsw_core->max_ports) {
>+ NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports");
> return -EINVAL;
>+ }
> if (!mlxsw_core->driver->port_split)
> return -EOPNOTSUPP;
>- return mlxsw_core->driver->port_split(mlxsw_core, port_index, count);
>+ return mlxsw_core->driver->port_split(mlxsw_core, port_index, count,
>+ extack);
> }
>
> static int mlxsw_devlink_port_unsplit(struct devlink *devlink,
>@@ -788,11 +791,14 @@ static int mlxsw_devlink_port_unsplit(struct devlink *devlink,
> {
> struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
>
>- if (port_index >= mlxsw_core->max_ports)
>+ if (port_index >= mlxsw_core->max_ports) {
>+ NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports");
> return -EINVAL;
>+ }
> if (!mlxsw_core->driver->port_unsplit)
> return -EOPNOTSUPP;
>- return mlxsw_core->driver->port_unsplit(mlxsw_core, port_index);
>+ return mlxsw_core->driver->port_unsplit(mlxsw_core, port_index,
>+ extack);
> }
>
> static int
>diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
>index 4a8d4c7f89d9..552cfa29c2f7 100644
>--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
>+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
>@@ -274,8 +274,9 @@ struct mlxsw_driver {
> int (*port_type_set)(struct mlxsw_core *mlxsw_core, u8 local_port,
> enum devlink_port_type new_type);
> int (*port_split)(struct mlxsw_core *mlxsw_core, u8 local_port,
>- unsigned int count);
>- int (*port_unsplit)(struct mlxsw_core *mlxsw_core, u8 local_port);
>+ unsigned int count, struct netlink_ext_ack *extack);
>+ int (*port_unsplit)(struct mlxsw_core *mlxsw_core, u8 local_port,
>+ struct netlink_ext_ack *extack);
> int (*sb_pool_get)(struct mlxsw_core *mlxsw_core,
> unsigned int sb_index, u16 pool_index,
> struct devlink_sb_pool_info *pool_info);
>diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
>index fc39f22e5c70..1b6d930e452d 100644
>--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
>+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
>@@ -3092,7 +3092,8 @@ static void mlxsw_sp_port_unsplit_create(struct mlxsw_sp *mlxsw_sp,
> }
>
> static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
>- unsigned int count)
>+ unsigned int count,
>+ struct netlink_ext_ack *extack)
> {
> struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
> struct mlxsw_sp_port *mlxsw_sp_port;
>@@ -3104,6 +3105,7 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
> if (!mlxsw_sp_port) {
> dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
> local_port);
>+ NL_SET_ERR_MSG_MOD(extack, "Port number does not exist");
> return -EINVAL;
> }
>
>@@ -3112,11 +3114,13 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
>
> if (count != 2 && count != 4) {
> netdev_err(mlxsw_sp_port->dev, "Port can only be split into 2 or 4 ports\n");
>+ NL_SET_ERR_MSG_MOD(extack, "Port can only be split into 2 or 4 ports");
> return -EINVAL;
> }
>
> if (cur_width != MLXSW_PORT_MODULE_MAX_WIDTH) {
> netdev_err(mlxsw_sp_port->dev, "Port cannot be split further\n");
>+ NL_SET_ERR_MSG_MOD(extack, "Port cannot be split further");
> return -EINVAL;
> }
>
>@@ -3125,6 +3129,7 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
> base_port = local_port;
> if (mlxsw_sp->ports[base_port + 1]) {
> netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
>+ NL_SET_ERR_MSG_MOD(extack, "Invalid split configuration");
> return -EINVAL;
> }
> } else {
>@@ -3132,6 +3137,7 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
> if (mlxsw_sp->ports[base_port + 1] ||
> mlxsw_sp->ports[base_port + 3]) {
> netdev_err(mlxsw_sp_port->dev, "Invalid split configuration\n");
>+ NL_SET_ERR_MSG_MOD(extack, "Invalid split configuration");
> return -EINVAL;
> }
> }
>@@ -3153,7 +3159,8 @@ static int mlxsw_sp_port_split(struct mlxsw_core *mlxsw_core, u8 local_port,
> return err;
> }
>
>-static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
>+static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port,
>+ struct netlink_ext_ack *extack)
> {
> struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
> struct mlxsw_sp_port *mlxsw_sp_port;
>@@ -3165,11 +3172,13 @@ static int mlxsw_sp_port_unsplit(struct mlxsw_core *mlxsw_core, u8 local_port)
> if (!mlxsw_sp_port) {
> dev_err(mlxsw_sp->bus_info->dev, "Port number \"%d\" does not exist\n",
> local_port);
>+ NL_SET_ERR_MSG_MOD(extack, "Port number does not exist");
> return -EINVAL;
> }
>
> if (!mlxsw_sp_port->split) {
> netdev_err(mlxsw_sp_port->dev, "Port wasn't split\n");
>+ NL_SET_ERR_MSG_MOD(extack, "Port was not split");
I wonder if we need the dmesg for these as well. Plus it is not the same
(wasn't/was not) which is maybe confusing. Any objection against the
original dmesg messages removal?
> return -EINVAL;
> }
>
>--
>2.11.0
>
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