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author | Mark Bloch <mbloch@nvidia.com> | 2022-03-15 19:56:50 +0300 |
---|---|---|
committer | Saeed Mahameed <saeedm@nvidia.com> | 2022-05-10 08:54:04 +0300 |
commit | 7f46a0b7327ae261f9981888708dbca22c283900 (patch) | |
tree | 2f85a28934d8250d6ab7063a9e94cfaea62a5db6 /drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h | |
parent | 352899f384d4aefa77ede6310d08c1b515612a8f (diff) | |
download | linux-7f46a0b7327ae261f9981888708dbca22c283900.tar.xz |
net/mlx5: Lag, add debugfs to query hardware lag state
Lag state has become very complicated with many modes, flags, types and
port selections methods and future work will add additional features.
Add a debugfs to query the current lag state. A new directory named "lag"
will be created under the mlx5 debugfs directory. As the driver has
debugfs per pci function the location will be: <debugfs>/mlx5/<BDF>/lag
For example:
/sys/kernel/debug/mlx5/0000:08:00.0/lag
The following files are exposed:
- state: Returns "active" or "disabled". If "active" it means hardware
lag is active.
- members: Returns the BDFs of all the members of lag object.
- type: Returns the type of the lag currently configured. Valid only
if hardware lag is active.
* "roce" - Members are bare metal PFs.
* "switchdev" - Members are in switchdev mode.
* "multipath" - ECMP offloads.
- port_sel_mode: Returns the egress port selection method, valid
only if hardware lag is active.
* "queue_affinity" - Egress port is selected by
the QP/SQ affinity.
* "hash" - Egress port is selected by hash done on
each packet. Controlled by: xmit_hash_policy of the
bond device.
- flags: Returns flags that are specific per lag @type. Valid only if
hardware lag is active.
* "shared_fdb" - "on" or "off", if "on" single FDB is used.
- mapping: Returns the mapping which is used to select egress port.
Valid only if hardware lag is active.
If @port_sel_mode is "hash" returns the active egress ports.
The hash result will select only active ports.
if @port_sel_mode is "queue_affinity" returns the mapping
between the configured port affinity of the QP/SQ and actual
egress port. For example:
* 1:1 - Mapping means if the configured affinity is port 1
traffic will egress via port 1.
* 1:2 - Mapping means if the configured affinity is port 1
traffic will egress via port 2. This can happen
if port 1 is down or in active/backup mode and port 1
is backup.
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h index 0c90d0ed03be..46683b84ff84 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h @@ -4,6 +4,8 @@ #ifndef __MLX5_LAG_H__ #define __MLX5_LAG_H__ +#include <linux/debugfs.h> + #define MLX5_LAG_MAX_HASH_BUCKETS 16 #include "mlx5_core.h" #include "mp.h" @@ -90,4 +92,11 @@ int mlx5_activate_lag(struct mlx5_lag *ldev, int mlx5_lag_dev_get_netdev_idx(struct mlx5_lag *ldev, struct net_device *ndev); +char *get_str_port_sel_mode(u8 flags); +void mlx5_infer_tx_enabled(struct lag_tracker *tracker, u8 num_ports, + u8 *ports, int *num_enabled); + +void mlx5_ldev_add_debugfs(struct mlx5_core_dev *dev); +void mlx5_ldev_remove_debugfs(struct dentry *dbg); + #endif /* __MLX5_LAG_H__ */ |