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Date: Thu, 9 Mar 2017 09:25:19 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, petrm@...lanox.com, idosch@...lanox.com,
mlxsw@...lanox.com, ivecera@...hat.com
Subject: [patch net-next 1/2] mlxsw: spectrum: Add support for vlan modify TC action
From: Petr Machata <petrm@...lanox.com>
Add VLAN action offloading. Invoke it from Spectrum flower handler for
"vlan modify" actions.
Signed-off-by: Petr Machata <petrm@...lanox.com>
Reviewed-by: Ido Schimmel <idosch@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
.../mellanox/mlxsw/core_acl_flex_actions.c | 83 ++++++++++++++++++++++
.../mellanox/mlxsw/core_acl_flex_actions.h | 2 +
drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 3 +
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c | 29 ++++++++
.../net/ethernet/mellanox/mlxsw/spectrum_flower.c | 10 +++
include/net/tc_act/tc_vlan.h | 5 ++
6 files changed, 132 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
index 5f337715..fe3c6ea1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
@@ -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
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h
index 43f78dc..6e103ac 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h
@@ -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
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index 13ec85e..ac445d8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -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;
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
index 8a18b3a..3c5ea7e 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
@@ -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,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
index 22ab429..d898407 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c
@@ -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;
diff --git a/include/net/tc_act/tc_vlan.h b/include/net/tc_act/tc_vlan.h
index 48cca32..9690c04 100644
--- a/include/net/tc_act/tc_vlan.h
+++ b/include/net/tc_act/tc_vlan.h
@@ -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 */
--
2.7.4
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