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mlxsw: spectrum: Add support for vlan modify TC action

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Add VLAN action offloading. Invoke it from Spectrum flower handler for
"vlan modify" actions.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2017-03-09 09:25:19 +01:00 committed by David S. Miller
parent a30aad50c2
commit a150201a70
6 changed files with 132 additions and 0 deletions
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83
drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
View File

@ -567,6 +567,89 @@ static char *mlxsw_afa_block_append_action(struct mlxsw_afa_block *block,
return oneact + MLXSW_AFA_PAYLOAD_OFFSET;
}
/* VLAN Action
* -----------
* VLAN action is used for manipulating VLANs. It can be used to implement QinQ,
* VLAN translation, change of PCP bits of the VLAN tag, push, pop as swap VLANs
* and more.
*/
#define MLXSW_AFA_VLAN_CODE 0x02
#define MLXSW_AFA_VLAN_SIZE 1
enum mlxsw_afa_vlan_vlan_tag_cmd {
MLXSW_AFA_VLAN_VLAN_TAG_CMD_NOP,
MLXSW_AFA_VLAN_VLAN_TAG_CMD_PUSH_TAG,
MLXSW_AFA_VLAN_VLAN_TAG_CMD_POP_TAG,
};
enum mlxsw_afa_vlan_cmd {
MLXSW_AFA_VLAN_CMD_NOP,
MLXSW_AFA_VLAN_CMD_SET_OUTER,
MLXSW_AFA_VLAN_CMD_SET_INNER,
MLXSW_AFA_VLAN_CMD_COPY_OUTER_TO_INNER,
MLXSW_AFA_VLAN_CMD_COPY_INNER_TO_OUTER,
MLXSW_AFA_VLAN_CMD_SWAP,
};
/* afa_vlan_vlan_tag_cmd
* Tag command: push, pop, nop VLAN header.
*/
MLXSW_ITEM32(afa, vlan, vlan_tag_cmd, 0x00, 29, 3);
/* afa_vlan_vid_cmd */
MLXSW_ITEM32(afa, vlan, vid_cmd, 0x04, 29, 3);
/* afa_vlan_vid */
MLXSW_ITEM32(afa, vlan, vid, 0x04, 0, 12);
/* afa_vlan_ethertype_cmd */
MLXSW_ITEM32(afa, vlan, ethertype_cmd, 0x08, 29, 3);
/* afa_vlan_ethertype
* Index to EtherTypes in Switch VLAN EtherType Register (SVER).
*/
MLXSW_ITEM32(afa, vlan, ethertype, 0x08, 24, 3);
/* afa_vlan_pcp_cmd */
MLXSW_ITEM32(afa, vlan, pcp_cmd, 0x08, 13, 3);
/* afa_vlan_pcp */
MLXSW_ITEM32(afa, vlan, pcp, 0x08, 8, 3);
static inline void
mlxsw_afa_vlan_pack(char *payload,
enum mlxsw_afa_vlan_vlan_tag_cmd vlan_tag_cmd,
enum mlxsw_afa_vlan_cmd vid_cmd, u16 vid,
enum mlxsw_afa_vlan_cmd pcp_cmd, u8 pcp,
enum mlxsw_afa_vlan_cmd ethertype_cmd, u8 ethertype)
{
mlxsw_afa_vlan_vlan_tag_cmd_set(payload, vlan_tag_cmd);
mlxsw_afa_vlan_vid_cmd_set(payload, vid_cmd);
mlxsw_afa_vlan_vid_set(payload, vid);
mlxsw_afa_vlan_pcp_cmd_set(payload, pcp_cmd);
mlxsw_afa_vlan_pcp_set(payload, pcp);
mlxsw_afa_vlan_ethertype_cmd_set(payload, ethertype_cmd);
mlxsw_afa_vlan_ethertype_set(payload, ethertype);
}
int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block,
u16 vid, u8 pcp, u8 et)
{
char *act = mlxsw_afa_block_append_action(block,
MLXSW_AFA_VLAN_CODE,
MLXSW_AFA_VLAN_SIZE);
if (!act)
return -ENOBUFS;
mlxsw_afa_vlan_pack(act, MLXSW_AFA_VLAN_VLAN_TAG_CMD_NOP,
MLXSW_AFA_VLAN_CMD_SET_OUTER, vid,
MLXSW_AFA_VLAN_CMD_SET_OUTER, pcp,
MLXSW_AFA_VLAN_CMD_SET_OUTER, et);
return 0;
}
EXPORT_SYMBOL(mlxsw_afa_block_append_vlan_modify);
/* Trap / Discard Action
* ---------------------
* The Trap / Discard action enables trapping / mirroring packets to the CPU

2
drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h
View File

@ -62,5 +62,7 @@ void mlxsw_afa_block_jump(struct mlxsw_afa_block *block, u16 group_id);
int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block);
int mlxsw_afa_block_append_fwd(struct mlxsw_afa_block *block,
u8 local_port, bool in_port);
int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block,
u16 vid, u8 pcp, u8 et);
#endif

3
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@ -679,6 +679,9 @@ int mlxsw_sp_acl_rulei_act_drop(struct mlxsw_sp_acl_rule_info *rulei);
int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct net_device *out_dev);
int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u32 action, u16 vid, u16 proto, u8 prio);
struct mlxsw_sp_acl_rule;

29
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
View File

@ -39,6 +39,7 @@
#include <linux/string.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include <net/tc_act/tc_vlan.h>
#include "reg.h"
#include "core.h"
@ -335,6 +336,34 @@ int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp,
local_port, in_port);
}
int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u32 action, u16 vid, u16 proto, u8 prio)
{
u8 ethertype;
if (action == TCA_VLAN_ACT_MODIFY) {
switch (proto) {
case ETH_P_8021Q:
ethertype = 0;
break;
case ETH_P_8021AD:
ethertype = 1;
break;
default:
dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN protocol %#04x\n",
proto);
return -EINVAL;
}
return mlxsw_afa_block_append_vlan_modify(rulei->act_block,
vid, prio, ethertype);
} else {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n");
return -EINVAL;
}
}
struct mlxsw_sp_acl_rule *
mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,

10
drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
View File

@ -39,6 +39,7 @@
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
#include <net/tc_act/tc_vlan.h>
#include "spectrum.h"
#include "core_acl_flex_keys.h"
@ -73,6 +74,15 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
out_dev);
if (err)
return err;
} else if (is_tcf_vlan(a)) {
u16 proto = be16_to_cpu(tcf_vlan_push_proto(a));
u32 action = tcf_vlan_action(a);
u8 prio = tcf_vlan_push_prio(a);
u16 vid = tcf_vlan_push_vid(a);
return mlxsw_sp_acl_rulei_act_vlan(mlxsw_sp, rulei,
action, vid,
proto, prio);
} else {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n");
return -EOPNOTSUPP;

5
include/net/tc_act/tc_vlan.h
View File

@ -49,4 +49,9 @@ static inline __be16 tcf_vlan_push_proto(const struct tc_action *a)
return to_vlan(a)->tcfv_push_proto;
}
static inline u8 tcf_vlan_push_prio(const struct tc_action *a)
{
return to_vlan(a)->tcfv_push_prio;
}
#endif /* __NET_TC_VLAN_H */