diff options
| author | Ido Schimmel | 2020-04-30 20:01:08 +0300 |
|---|---|---|
| committer | David S. Miller | 2020-04-30 13:02:32 -0700 |
| commit | 466010342e89240c45746f65767c7290b96a4b36 (patch) | |
| tree | cdeda56665312ac3a7288657f87f52140cb19c8a | |
| parent | 07f81727c1a0b8f2acdabc060727eff60bffc048 (diff) | |
mlxsw: spectrum_span: Add APIs to get / put a SPAN agent
Given a netdev that packets should be mirrored to, create a SPAN agent
and return its identifier to the caller.
The SPAN agent is reference counted, as multiple tc-mirred actions can
point to the same destination netdev.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c | 43 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h | 4 |
2 files changed, 47 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c index ae3c8a1e9a43..c4159f4a66e2 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c @@ -1039,3 +1039,46 @@ void mlxsw_sp_span_respin(struct mlxsw_sp *mlxsw_sp) return; mlxsw_core_schedule_work(&mlxsw_sp->span->work); } + +int mlxsw_sp_span_agent_get(struct mlxsw_sp *mlxsw_sp, + const struct net_device *to_dev, int *p_span_id) +{ + const struct mlxsw_sp_span_entry_ops *ops; + struct mlxsw_sp_span_entry *span_entry; + struct mlxsw_sp_span_parms sparms; + int err; + + ASSERT_RTNL(); + + ops = mlxsw_sp_span_entry_ops(mlxsw_sp, to_dev); + if (!ops) { + dev_err(mlxsw_sp->bus_info->dev, "Cannot mirror to requested destination\n"); + return -EOPNOTSUPP; + } + + memset(&sparms, 0, sizeof(sparms)); + err = ops->parms_set(to_dev, &sparms); + if (err) + return err; + + span_entry = mlxsw_sp_span_entry_get(mlxsw_sp, to_dev, ops, sparms); + if (!span_entry) + return -ENOBUFS; + + *p_span_id = span_entry->id; + + return 0; +} + +void mlxsw_sp_span_agent_put(struct mlxsw_sp *mlxsw_sp, int span_id) +{ + struct mlxsw_sp_span_entry *span_entry; + + ASSERT_RTNL(); + + span_entry = mlxsw_sp_span_entry_find_by_id(mlxsw_sp, span_id); + if (WARN_ON_ONCE(!span_entry)) + return; + + mlxsw_sp_span_entry_put(mlxsw_sp, span_entry); +} diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h index d23abdf957fa..b79de9a125bb 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.h @@ -77,4 +77,8 @@ void mlxsw_sp_span_entry_invalidate(struct mlxsw_sp *mlxsw_sp, int mlxsw_sp_span_port_mtu_update(struct mlxsw_sp_port *port, u16 mtu); void mlxsw_sp_span_speed_update_work(struct work_struct *work); +int mlxsw_sp_span_agent_get(struct mlxsw_sp *mlxsw_sp, + const struct net_device *to_dev, int *p_span_id); +void mlxsw_sp_span_agent_put(struct mlxsw_sp *mlxsw_sp, int span_id); + #endif |