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mlxsw: pci: Extract cookie index for ACL discard trap packets 

In case the received packet comes in due to one of ACL discard traps,
take the user_def_val_orig_pkt_len field from CQE and store it
in skb->cb as ACL 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 11:45:24 +01:00 committed by David S. Miller
parent 6d19d2bdc8
commit 78a7dcb7c9
3 changed files with 18 additions and 1 deletions
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5
drivers/net/ethernet/mellanox/mlxsw/core.h
View File

@ -473,7 +473,10 @@ enum mlxsw_devlink_param_id {
};
struct mlxsw_skb_cb {
struct mlxsw_tx_info tx_info;
union {
struct mlxsw_tx_info tx_info;
u32 cookie_index; /* Only used during receive */
};
};
static inline struct mlxsw_skb_cb *mlxsw_skb_cb(struct sk_buff *skb)

9
drivers/net/ethernet/mellanox/mlxsw/pci.c
View File

@ -575,6 +575,15 @@ static void mlxsw_pci_cqe_rdq_handle(struct mlxsw_pci *mlxsw_pci,
rx_info.trap_id = mlxsw_pci_cqe_trap_id_get(cqe);
if (rx_info.trap_id == MLXSW_TRAP_ID_DISCARD_INGRESS_ACL ||
rx_info.trap_id == MLXSW_TRAP_ID_DISCARD_EGRESS_ACL) {
u32 cookie_index = 0;
if (mlxsw_pci->max_cqe_ver >= MLXSW_PCI_CQE_V2)
cookie_index = mlxsw_pci_cqe2_user_def_val_orig_pkt_len_get(cqe);
mlxsw_skb_cb(skb)->cookie_index = cookie_index;
}
byte_count = mlxsw_pci_cqe_byte_count_get(cqe);
if (mlxsw_pci_cqe_crc_get(cqe_v, cqe))
byte_count -= ETH_FCS_LEN;

5
drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
View File

@ -208,6 +208,11 @@ MLXSW_ITEM32(pci, cqe0, dqn, 0x0C, 1, 5);
MLXSW_ITEM32(pci, cqe12, dqn, 0x0C, 1, 6);
mlxsw_pci_cqe_item_helpers(dqn, 0, 12, 12);
/* pci_cqe_user_def_val_orig_pkt_len
* When trap_id is an ACL: User defined value from policy engine action.
*/
MLXSW_ITEM32(pci, cqe2, user_def_val_orig_pkt_len, 0x14, 0, 20);
/* pci_cqe_owner
* Ownership bit.
*/