From 6a8c101e0795d4fe892f281a4e08b2a05cbb9e20 Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 14 Jul 2020 17:21:06 +0300 Subject: [PATCH] mlxsw: core: Use mirror reason during Rx listener lookup The Rx listener abstraction allows the switch driver (e.g., mlxsw_spectrum) to register a function that is called when a packet is received (trapped) for a specific reason. Up until now, the Rx listener lookup was solely based on the trap identifier. However, when a packet is mirrored to the CPU the trap identifier merely indicates that the packet was mirrored, but not why it was mirrored. This makes it impossible for the switch driver to register different Rx listeners for different mirror reasons. Solve this by allowing the switch driver to register a Rx listener with a mirror reason and by extending the Rx listener lookup to take the mirror reason into account. Reviewed-by: Jiri Pirko Signed-off-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/core.c | 6 ++++-- drivers/net/ethernet/mellanox/mlxsw/core.h | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index 8b3791d..1363168 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -1524,7 +1524,8 @@ static bool __is_rx_listener_equal(const struct mlxsw_rx_listener *rxl_a, { return (rxl_a->func == rxl_b->func && rxl_a->local_port == rxl_b->local_port && - rxl_a->trap_id == rxl_b->trap_id); + rxl_a->trap_id == rxl_b->trap_id && + rxl_a->mirror_reason == rxl_b->mirror_reason); } static struct mlxsw_rx_listener_item * @@ -2044,7 +2045,8 @@ void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, rxl = &rxl_item->rxl; if ((rxl->local_port == MLXSW_PORT_DONT_CARE || rxl->local_port == local_port) && - rxl->trap_id == rx_info->trap_id) { + rxl->trap_id == rx_info->trap_id && + rxl->mirror_reason == rx_info->mirror_reason) { if (rxl_item->enabled) found = true; break; diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index c736b86..c1c1e03 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -61,6 +61,7 @@ void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core, struct mlxsw_rx_listener { void (*func)(struct sk_buff *skb, u8 local_port, void *priv); u8 local_port; + u8 mirror_reason; u16 trap_id; }; -- 2.7.4