net/mlx5: Add flow context for flow tag

Refactor the flow data structures, add new flow_context and move
flow_tag into it, as flow_tag doesn't belong to the rule action.
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/infiniband/hw/mlx5/flow.c

@@ -65,11 +65,12 @@ static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
 static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	struct uverbs_attr_bundle *attrs)
 {
-	struct mlx5_flow_act flow_act = {.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG};
+	struct mlx5_flow_context flow_context = {.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG};
 	struct mlx5_ib_flow_handler *flow_handler;
 	struct mlx5_ib_flow_matcher *fs_matcher;
 	struct ib_uobject **arr_flow_actions;
 	struct ib_uflow_resources *uflow_res;
+	struct mlx5_flow_act flow_act = {};
 	void *devx_obj;
 	int dest_id, dest_type;
 	void *cmd_in;
@@ -172,17 +173,19 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 				   arr_flow_actions[i]->object);
 	}
 
-	ret = uverbs_copy_from(&flow_act.flow_tag, attrs,
+	ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
 			       MLX5_IB_ATTR_CREATE_FLOW_TAG);
 	if (!ret) {
-		if (flow_act.flow_tag >= BIT(24)) {
+		if (flow_context.flow_tag >= BIT(24)) {
 			ret = -EINVAL;
 			goto err_out;
 		}
-		flow_act.flags |= FLOW_ACT_HAS_TAG;
+		flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
 	}
 
-	flow_handler = mlx5_ib_raw_fs_rule_add(dev, fs_matcher, &flow_act,
+	flow_handler = mlx5_ib_raw_fs_rule_add(dev, fs_matcher,
+					       &flow_context,
+					       &flow_act,
 					       counter_id,
 					       cmd_in, inlen,
 					       dest_id, dest_type);

drivers/infiniband/hw/mlx5/main.c

@@ -2666,11 +2666,15 @@ int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
 	}
 }
 
-static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
-			   u32 *match_v, const union ib_flow_spec *ib_spec,
+static int parse_flow_attr(struct mlx5_core_dev *mdev,
+			   struct mlx5_flow_spec *spec,
+			   const union ib_flow_spec *ib_spec,
 			   const struct ib_flow_attr *flow_attr,
 			   struct mlx5_flow_act *action, u32 prev_type)
 {
+	struct mlx5_flow_context *flow_context = &spec->flow_context;
+	u32 *match_c = spec->match_criteria;
+	u32 *match_v = spec->match_value;
 	void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
 					   misc_parameters);
 	void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
@@ -2989,8 +2993,8 @@ static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
 		if (ib_spec->flow_tag.tag_id >= BIT(24))
 			return -EINVAL;
 
-		action->flow_tag = ib_spec->flow_tag.tag_id;
-		action->flags |= FLOW_ACT_HAS_TAG;
+		flow_context->flow_tag = ib_spec->flow_tag.tag_id;
+		flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
 		break;
 	case IB_FLOW_SPEC_ACTION_DROP:
 		if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
@@ -3084,7 +3088,8 @@ is_valid_esp_aes_gcm(struct mlx5_core_dev *mdev,
 		return VALID_SPEC_NA;
 
 	return is_crypto && is_ipsec &&
-		(!egress || (!is_drop && !(flow_act->flags & FLOW_ACT_HAS_TAG))) ?
+		(!egress || (!is_drop &&
+			     !(spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG))) ?
 		VALID_SPEC_VALID : VALID_SPEC_INVALID;
 }
 
@@ -3473,7 +3478,7 @@ static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 {
 	struct mlx5_flow_table	*ft = ft_prio->flow_table;
 	struct mlx5_ib_flow_handler *handler;
-	struct mlx5_flow_act flow_act = {.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG};
+	struct mlx5_flow_act flow_act = {};
 	struct mlx5_flow_spec *spec;
 	struct mlx5_flow_destination dest_arr[2] = {};
 	struct mlx5_flow_destination *rule_dst = dest_arr;
@@ -3504,8 +3509,7 @@ static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 	}
 
 	for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
-		err = parse_flow_attr(dev->mdev, spec->match_criteria,
-				      spec->match_value,
+		err = parse_flow_attr(dev->mdev, spec,
 				      ib_flow, flow_attr, &flow_act,
 				      prev_type);
 		if (err < 0)
@@ -3572,11 +3576,11 @@ static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 					MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
 	}
 
-	if ((flow_act.flags & FLOW_ACT_HAS_TAG)  &&
+	if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG)  &&
 	    (flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
 	     flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
 		mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
-			     flow_act.flow_tag, flow_attr->type);
+			     spec->flow_context.flow_tag, flow_attr->type);
 		err = -EINVAL;
 		goto free;
 	}
@@ -3947,6 +3951,7 @@ _create_raw_flow_rule(struct mlx5_ib_dev *dev,
 		      struct mlx5_ib_flow_prio *ft_prio,
 		      struct mlx5_flow_destination *dst,
 		      struct mlx5_ib_flow_matcher  *fs_matcher,
+		      struct mlx5_flow_context *flow_context,
 		      struct mlx5_flow_act *flow_act,
 		      void *cmd_in, int inlen,
 		      int dst_num)
@@ -3969,6 +3974,7 @@ _create_raw_flow_rule(struct mlx5_ib_dev *dev,
 	memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
 	       fs_matcher->mask_len);
 	spec->match_criteria_enable = fs_matcher->match_criteria_enable;
+	spec->flow_context = *flow_context;
 
 	handler->rule = mlx5_add_flow_rules(ft, spec,
 					    flow_act, dst, dst_num);
@@ -4033,6 +4039,7 @@ static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
 struct mlx5_ib_flow_handler *
 mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev,
 			struct mlx5_ib_flow_matcher *fs_matcher,
+			struct mlx5_flow_context *flow_context,
 			struct mlx5_flow_act *flow_act,
 			u32 counter_id,
 			void *cmd_in, int inlen, int dest_id,
@@ -4085,7 +4092,8 @@ mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev,
 		dst_num++;
 	}
 
-	handler = _create_raw_flow_rule(dev, ft_prio, dst, fs_matcher, flow_act,
+	handler = _create_raw_flow_rule(dev, ft_prio, dst, fs_matcher,
+					flow_context, flow_act,
 					cmd_in, inlen, dst_num);
 
 	if (IS_ERR(handler)) {

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -1317,6 +1317,7 @@ extern const struct uapi_definition mlx5_ib_devx_defs[];
 extern const struct uapi_definition mlx5_ib_flow_defs[];
 struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
 	struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
+	struct mlx5_flow_context *flow_context,
 	struct mlx5_flow_act *flow_act, u32 counter_id,
 	void *cmd_in, int inlen, int dest_id, int dest_type);
 bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type);

drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.h

@@ -204,7 +204,7 @@ TRACE_EVENT(mlx5_fs_set_fte,
 			   __entry->index = fte->index;
 			   __entry->action = fte->action.action;
 			   __entry->mask_enable = __entry->fg->mask.match_criteria_enable;
-			   __entry->flow_tag = fte->action.flow_tag;
+			   __entry->flow_tag = fte->flow_context.flow_tag;
 			   memcpy(__entry->mask_outer,
 				  MLX5_ADDR_OF(fte_match_param,
 					       &__entry->fg->mask.match_criteria,

drivers/net/ethernet/mellanox/mlx5/core/en_fs_ethtool.c

@@ -426,7 +426,7 @@ add_ethtool_flow_rule(struct mlx5e_priv *priv,
 	}
 
 	spec->match_criteria_enable = (!outer_header_zero(spec->match_criteria));
-	flow_act.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
+	spec->flow_context.flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
 	rule = mlx5_add_flow_rules(ft, spec, &flow_act, dst, dst ? 1 : 0);
 	if (IS_ERR(rule)) {
 		err = PTR_ERR(rule);

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

@@ -716,19 +716,22 @@ mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 		      struct mlx5e_tc_flow *flow,
 		      struct netlink_ext_ack *extack)
 {
+	struct mlx5_flow_context *flow_context = &parse_attr->spec.flow_context;
 	struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 	struct mlx5_core_dev *dev = priv->mdev;
 	struct mlx5_flow_destination dest[2] = {};
 	struct mlx5_flow_act flow_act = {
 		.action = attr->action,
-		.flow_tag = attr->flow_tag,
 		.reformat_id = 0,
-		.flags    = FLOW_ACT_HAS_TAG | FLOW_ACT_NO_APPEND,
+		.flags    = FLOW_ACT_NO_APPEND,
 	};
 	struct mlx5_fc *counter = NULL;
 	bool table_created = false;
 	int err, dest_ix = 0;
 
+	flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
+	flow_context->flow_tag = attr->flow_tag;
+
 	if (flow->flags & MLX5E_TC_FLOW_HAIRPIN) {
 		err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
 		if (err) {

drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c

@@ -636,7 +636,8 @@ static bool mlx5_is_fpga_egress_ipsec_rule(struct mlx5_core_dev *dev,
 					   u8 match_criteria_enable,
 					   const u32 *match_c,
 					   const u32 *match_v,
-					   struct mlx5_flow_act *flow_act)
+					   struct mlx5_flow_act *flow_act,
+					   struct mlx5_flow_context *flow_context)
 {
 	const void *outer_c = MLX5_ADDR_OF(fte_match_param, match_c,
 					   outer_headers);
@@ -655,7 +656,7 @@ static bool mlx5_is_fpga_egress_ipsec_rule(struct mlx5_core_dev *dev,
 	    (match_criteria_enable &
 	     ~(MLX5_MATCH_OUTER_HEADERS | MLX5_MATCH_MISC_PARAMETERS)) ||
 	    (flow_act->action & ~(MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | MLX5_FLOW_CONTEXT_ACTION_ALLOW)) ||
-	     (flow_act->flags & FLOW_ACT_HAS_TAG))
+	     (flow_context->flags & FLOW_CONTEXT_HAS_TAG))
 		return false;
 
 	return true;
@@ -767,7 +768,8 @@ mlx5_fpga_ipsec_fs_create_sa_ctx(struct mlx5_core_dev *mdev,
 					    fg->mask.match_criteria_enable,
 					    fg->mask.match_criteria,
 					    fte->val,
-					    &fte->action))
+					    &fte->action,
+					    &fte->flow_context))
 		return ERR_PTR(-EINVAL);
 	else if (!mlx5_is_fpga_ipsec_rule(mdev,
 					  fg->mask.match_criteria_enable,

drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c

@@ -396,7 +396,8 @@ static int mlx5_cmd_set_fte(struct mlx5_core_dev *dev,
 	in_flow_context = MLX5_ADDR_OF(set_fte_in, in, flow_context);
 	MLX5_SET(flow_context, in_flow_context, group_id, group_id);
 
-	MLX5_SET(flow_context, in_flow_context, flow_tag, fte->action.flow_tag);
+	MLX5_SET(flow_context, in_flow_context, flow_tag,
+		 fte->flow_context.flow_tag);
 	MLX5_SET(flow_context, in_flow_context, extended_destination,
 		 extended_dest);
 	if (extended_dest) {

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

@@ -584,7 +584,7 @@ static int insert_fte(struct mlx5_flow_group *fg, struct fs_fte *fte)
 }
 
 static struct fs_fte *alloc_fte(struct mlx5_flow_table *ft,
-				u32 *match_value,
+				struct mlx5_flow_spec *spec,
 				struct mlx5_flow_act *flow_act)
 {
 	struct mlx5_flow_steering *steering = get_steering(&ft->node);
@@ -594,9 +594,10 @@ static struct fs_fte *alloc_fte(struct mlx5_flow_table *ft,
 	if (!fte)
 		return ERR_PTR(-ENOMEM);
 
-	memcpy(fte->val, match_value, sizeof(fte->val));
+	memcpy(fte->val, &spec->match_value, sizeof(fte->val));
 	fte->node.type =  FS_TYPE_FLOW_ENTRY;
 	fte->action = *flow_act;
+	fte->flow_context = spec->flow_context;
 
 	tree_init_node(&fte->node, NULL, del_sw_fte);
 
@@ -1428,7 +1429,9 @@ static bool check_conflicting_actions(u32 action1, u32 action2)
 	return false;
 }
 
-static int check_conflicting_ftes(struct fs_fte *fte, const struct mlx5_flow_act *flow_act)
+static int check_conflicting_ftes(struct fs_fte *fte,
+				  const struct mlx5_flow_context *flow_context,
+				  const struct mlx5_flow_act *flow_act)
 {
 	if (check_conflicting_actions(flow_act->action, fte->action.action)) {
 		mlx5_core_warn(get_dev(&fte->node),
@@ -1436,12 +1439,12 @@ static int check_conflicting_ftes(struct fs_fte *fte, const struct mlx5_flow_act
 		return -EEXIST;
 	}
 
-	if ((flow_act->flags & FLOW_ACT_HAS_TAG) &&
-	    fte->action.flow_tag != flow_act->flow_tag) {
+	if ((flow_context->flags & FLOW_CONTEXT_HAS_TAG) &&
+	    fte->flow_context.flow_tag != flow_context->flow_tag) {
 		mlx5_core_warn(get_dev(&fte->node),
 			       "FTE flow tag %u already exists with different flow tag %u\n",
-			       fte->action.flow_tag,
-			       flow_act->flow_tag);
+			       fte->flow_context.flow_tag,
+			       flow_context->flow_tag);
 		return -EEXIST;
 	}
 
@@ -1449,7 +1452,7 @@ static int check_conflicting_ftes(struct fs_fte *fte, const struct mlx5_flow_act
 }
 
 static struct mlx5_flow_handle *add_rule_fg(struct mlx5_flow_group *fg,
-					    u32 *match_value,
+					    struct mlx5_flow_spec *spec,
 					    struct mlx5_flow_act *flow_act,
 					    struct mlx5_flow_destination *dest,
 					    int dest_num,
@@ -1460,7 +1463,7 @@ static struct mlx5_flow_handle *add_rule_fg(struct mlx5_flow_group *fg,
 	int i;
 	int ret;
 
-	ret = check_conflicting_ftes(fte, flow_act);
+	ret = check_conflicting_ftes(fte, &spec->flow_context, flow_act);
 	if (ret)
 		return ERR_PTR(ret);
 
@@ -1635,7 +1638,7 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
 	u64  version;
 	int err;
 
-	fte = alloc_fte(ft, spec->match_value, flow_act);
+	fte = alloc_fte(ft, spec, flow_act);
 	if (IS_ERR(fte))
 		return  ERR_PTR(-ENOMEM);
 
@@ -1651,8 +1654,7 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
 		fte_tmp = lookup_fte_locked(g, spec->match_value, take_write);
 		if (!fte_tmp)
 			continue;
-		rule = add_rule_fg(g, spec->match_value,
-				   flow_act, dest, dest_num, fte_tmp);
+		rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte_tmp);
 		up_write_ref_node(&fte_tmp->node, false);
 		tree_put_node(&fte_tmp->node, false);
 		kmem_cache_free(steering->ftes_cache, fte);
@@ -1699,8 +1701,7 @@ try_add_to_existing_fg(struct mlx5_flow_table *ft,
 
 		nested_down_write_ref_node(&fte->node, FS_LOCK_CHILD);
 		up_write_ref_node(&g->node, false);
-		rule = add_rule_fg(g, spec->match_value,
-				   flow_act, dest, dest_num, fte);
+		rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte);
 		up_write_ref_node(&fte->node, false);
 		tree_put_node(&fte->node, false);
 		return rule;
@@ -1786,7 +1787,7 @@ _mlx5_add_flow_rules(struct mlx5_flow_table *ft,
 	if (err)
 		goto err_release_fg;
 
-	fte = alloc_fte(ft, spec->match_value, flow_act);
+	fte = alloc_fte(ft, spec, flow_act);
 	if (IS_ERR(fte)) {
 		err = PTR_ERR(fte);
 		goto err_release_fg;
@@ -1800,8 +1801,7 @@ _mlx5_add_flow_rules(struct mlx5_flow_table *ft,
 
 	nested_down_write_ref_node(&fte->node, FS_LOCK_CHILD);
 	up_write_ref_node(&g->node, false);
-	rule = add_rule_fg(g, spec->match_value, flow_act, dest,
-			   dest_num, fte);
+	rule = add_rule_fg(g, spec, flow_act, dest, dest_num, fte);
 	up_write_ref_node(&fte->node, false);
 	tree_put_node(&fte->node, false);
 	tree_put_node(&g->node, false);

drivers/net/ethernet/mellanox/mlx5/core/fs_core.h

@@ -170,6 +170,7 @@ struct fs_fte {
 	u32				val[MLX5_ST_SZ_DW_MATCH_PARAM];
 	u32				dests_size;
 	u32				index;
+	struct mlx5_flow_context	flow_context;
 	struct mlx5_flow_act		action;
 	enum fs_fte_status		status;
 	struct mlx5_fc			*counter;

include/linux/mlx5/fs.h

@@ -88,10 +88,20 @@ struct mlx5_flow_group;
 struct mlx5_flow_namespace;
 struct mlx5_flow_handle;
 
+enum {
+	FLOW_CONTEXT_HAS_TAG = BIT(0),
+};
+
+struct mlx5_flow_context {
+	u32 flags;
+	u32 flow_tag;
+};
+
 struct mlx5_flow_spec {
 	u8   match_criteria_enable;
 	u32  match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
 	u32  match_value[MLX5_ST_SZ_DW(fte_match_param)];
+	struct mlx5_flow_context flow_context;
 };
 
 enum {
@@ -173,13 +183,11 @@ struct mlx5_fs_vlan {
 #define MLX5_FS_VLAN_DEPTH	2
 
 enum {
-	FLOW_ACT_HAS_TAG   = BIT(0),
-	FLOW_ACT_NO_APPEND = BIT(1),
+	FLOW_ACT_NO_APPEND = BIT(0),
 };
 
 struct mlx5_flow_act {
 	u32 action;
-	u32 flow_tag;
 	u32 reformat_id;
 	u32 modify_id;
 	uintptr_t esp_id;
@@ -190,7 +198,6 @@ struct mlx5_flow_act {
 
 #define MLX5_DECLARE_FLOW_ACT(name) \
 	struct mlx5_flow_act name = { .action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,\
-				      .flow_tag = MLX5_FS_DEFAULT_FLOW_TAG, \
 				      .reformat_id = 0, \
 				      .modify_id = 0, \
 				      .flags =  0, }