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mlxsw: core_acl_flex_actions: Add trap with userdef action

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Expose "Trap action with userdef". It is the same as already
defined "Trap action" with a difference that it would ask the policy
engine to pass arbitrary value (userdef) alongside with received packets.
This would be later on used to carry cookie index.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2020-02-25 11:45:22 +01:00 committed by David S. Miller
parent 5a2e106c74
commit ec12165195
1 changed files with 28 additions and 2 deletions
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30
drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
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@ -747,18 +747,25 @@ int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block,
}
EXPORT_SYMBOL(mlxsw_afa_block_append_vlan_modify);
/* Trap Action
* -----------
/* Trap Action / Trap With Userdef Action
* --------------------------------------
* The Trap action enables trapping / mirroring packets to the CPU
* as well as discarding packets.
* The ACL Trap / Discard separates the forward/discard control from CPU
* trap control. In addition, the Trap / Discard action enables activating
* SPAN (port mirroring).
*
* The Trap with userdef action action has the same functionality as
* the Trap action with addition of user defined value that can be set
* and used by higher layer applications.
*/
#define MLXSW_AFA_TRAP_CODE 0x03
#define MLXSW_AFA_TRAP_SIZE 1
#define MLXSW_AFA_TRAPWU_CODE 0x04
#define MLXSW_AFA_TRAPWU_SIZE 2
enum mlxsw_afa_trap_trap_action {
MLXSW_AFA_TRAP_TRAP_ACTION_NOP = 0,
MLXSW_AFA_TRAP_TRAP_ACTION_TRAP = 2,
@ -794,6 +801,15 @@ MLXSW_ITEM32(afa, trap, mirror_agent, 0x08, 29, 3);
*/
MLXSW_ITEM32(afa, trap, mirror_enable, 0x08, 24, 1);
/* user_def_val
* Value for the SW usage. Can be used to pass information of which
* rule has caused a trap. This may be overwritten by later traps.
* This field does a set on the packet's user_def_val only if this
* is the first trap_id or if the trap_id has replaced the previous
* packet's trap_id.
*/
MLXSW_ITEM32(afa, trap, user_def_val, 0x0C, 0, 20);
static inline void
mlxsw_afa_trap_pack(char *payload,
enum mlxsw_afa_trap_trap_action trap_action,
@ -805,6 +821,16 @@ mlxsw_afa_trap_pack(char *payload,
mlxsw_afa_trap_trap_id_set(payload, trap_id);
}
static inline void
mlxsw_afa_trapwu_pack(char *payload,
enum mlxsw_afa_trap_trap_action trap_action,
enum mlxsw_afa_trap_forward_action forward_action,
u16 trap_id, u32 user_def_val)
{
mlxsw_afa_trap_pack(payload, trap_action, forward_action, trap_id);
mlxsw_afa_trap_user_def_val_set(payload, user_def_val);
}
static inline void
mlxsw_afa_trap_mirror_pack(char *payload, bool mirror_enable,
u8 mirror_agent)