diff options
| author |   Petr Machata <petrm@mellanox.com> | 2019-06-30 09:04:52 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-07-01 18:58:34 -0700 |
| commit | d7cd206dbfb25efc5f06ea3c595074a51d48d00a (patch) | |
| tree | d603ff49faafb1047f87b48ed426e032055f9aeb /drivers/net/ethernet | |
| parent | mlxsw: spectrum: PTP: Hook into packet receive path (diff) | |
| download | linux-dev-d7cd206dbfb25efc5f06ea3c595074a51d48d00a.tar.xz linux-dev-d7cd206dbfb25efc5f06ea3c595074a51d48d00a.zip | |
mlxsw: core: Add support for using SKB control buffer
The SKB control buffer is useful (and used) for bookkeeping of information
related to that SKB. Add helpers so that the mlxsw driver(s) can safely use
the buffer as well. The structure is currently empty, individual users will
add members to it as necessary.
Note that SKB allocation functions already clear the buffer, so the cleanup
is only necessary when ndo_start_xmit is called.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 9 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/switchx2.c | 2 |
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 6dbb0ede502e..06babcc58c7a 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -418,4 +418,13 @@ enum mlxsw_devlink_param_id { MLXSW_DEVLINK_PARAM_ID_ACL_REGION_REHASH_INTERVAL, }; +struct mlxsw_skb_cb { +}; + +static inline struct mlxsw_skb_cb *mlxsw_skb_cb(struct sk_buff *skb) +{ + BUILD_BUG_ON(sizeof(mlxsw_skb_cb) > sizeof(skb->cb)); + return (struct mlxsw_skb_cb *) skb->cb; +} + #endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 84f4077b4b37..a0376d4f94a8 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -790,6 +790,8 @@ static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb, u64 len; int err; + memset(skb->cb, 0, sizeof(struct mlxsw_skb_cb)); + if (mlxsw_core_skb_transmit_busy(mlxsw_sp->core, &tx_info)) return NETDEV_TX_BUSY; diff --git a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c index fc4f19167262..bdab96f5bc70 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c +++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c @@ -299,6 +299,8 @@ static netdev_tx_t mlxsw_sx_port_xmit(struct sk_buff *skb, u64 len; int err; + memset(skb->cb, 0, sizeof(struct mlxsw_skb_cb)); + if (mlxsw_core_skb_transmit_busy(mlxsw_sx->core, &tx_info)) return NETDEV_TX_BUSY; |