Commit 2aa4aa20 authored by Shalom Toledo's avatar Shalom Toledo Committed by David S. Miller
Browse files

mlxsw: core: Add support for EMAD string TLV parsing 



During parsing of incoming EMADs, fill the string TLV's offset when it is
used.

Signed-off-by: default avatarShalom Toledo <shalomt@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 664b3dd9

drivers/net/ethernet/mellanox/mlxsw/core.c

+15 −0
Original line number Diff line number Diff line
@@ -382,17 +382,32 @@ static void mlxsw_emad_construct(struct sk_buff *skb, 


struct mlxsw_emad_tlv_offsets {

	u16 op_tlv;

	u16 string_tlv;

	u16 reg_tlv;

};



static bool mlxsw_emad_tlv_is_string_tlv(const char *tlv)

{

	u8 tlv_type = mlxsw_emad_string_tlv_type_get(tlv);



	return tlv_type == MLXSW_EMAD_TLV_TYPE_STRING;

}



static void mlxsw_emad_tlv_parse(struct sk_buff *skb)

{

	struct mlxsw_emad_tlv_offsets *offsets =

		(struct mlxsw_emad_tlv_offsets *) skb->cb;



	offsets->op_tlv = MLXSW_EMAD_ETH_HDR_LEN;

	offsets->string_tlv = 0;

	offsets->reg_tlv = MLXSW_EMAD_ETH_HDR_LEN +

			   MLXSW_EMAD_OP_TLV_LEN * sizeof(u32);



	/* If string TLV is present, it must come after the operation TLV. */

	if (mlxsw_emad_tlv_is_string_tlv(skb->data + offsets->reg_tlv)) {

		offsets->string_tlv = offsets->reg_tlv;

		offsets->reg_tlv += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32);

	}

}



static char *mlxsw_emad_op_tlv(const struct sk_buff *skb)

CRA Git | Maintained and supported by SUSTech CRA and CCSE