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Commit b96c22c0 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'tc_action-fixes' 



Cong Wang says:

====================
net_sched: tc action fixes and updates

This patchset fixes a few regressions caused by the previous
code refactor and more. Thanks to Jamal for catching them!

Note, patch 3/7 and 4/7 are not strictly necessary for this patchset,
I just want to carry them together.

---
v4: adjust an indention for Jamal
    add two more patches

v3: avoid list for fast path, suggested by Jamal

v2: replace flex_array with regular dynamic array
    keep tcf_action_stats_update() in act_api.h
    fix macro typos found by Amir
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents f4abf05f b5ac8518

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

+3 −1
Original line number Diff line number Diff line
@@ -8396,12 +8396,14 @@ static int parse_tc_actions(struct ixgbe_adapter *adapter, 
			    struct tcf_exts *exts, u64 *action, u8 *queue)

{

	const struct tc_action *a;

	LIST_HEAD(actions);

	int err;



	if (tc_no_actions(exts))

		return -EINVAL;



	tc_for_each_action(a, exts) {

	tcf_exts_to_list(exts, &actions);

	list_for_each_entry(a, &actions, list) {



		/* Drop action */

		if (is_tcf_gact_shot(a)) {

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

+9 −3
Original line number Diff line number Diff line
@@ -318,6 +318,7 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, 
				u32 *action, u32 *flow_tag)

{

	const struct tc_action *a;

	LIST_HEAD(actions);



	if (tc_no_actions(exts))

		return -EINVAL;
@@ -325,7 +326,8 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, 
	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;

	*action = 0;



	tc_for_each_action(a, exts) {

	tcf_exts_to_list(exts, &actions);

	list_for_each_entry(a, &actions, list) {

		/* Only support a single action per rule */

		if (*action)

			return -EINVAL;
@@ -362,13 +364,15 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, 
				u32 *action, u32 *dest_vport)

{

	const struct tc_action *a;

	LIST_HEAD(actions);



	if (tc_no_actions(exts))

		return -EINVAL;



	*action = 0;



	tc_for_each_action(a, exts) {

	tcf_exts_to_list(exts, &actions);

	list_for_each_entry(a, &actions, list) {

		/* Only support a single action per rule */

		if (*action)

			return -EINVAL;
@@ -503,6 +507,7 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv, 
	struct mlx5e_tc_flow *flow;

	struct tc_action *a;

	struct mlx5_fc *counter;

	LIST_HEAD(actions);

	u64 bytes;

	u64 packets;

	u64 lastuse;
@@ -518,7 +523,8 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv, 


	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);



	tc_for_each_action(a, f->exts)

	tcf_exts_to_list(f->exts, &actions);

	list_for_each_entry(a, &actions, list)

		tcf_action_stats_update(a, bytes, packets, lastuse);



	return 0;

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

+3 −1
Original line number Diff line number Diff line
@@ -1121,6 +1121,7 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port, 
					  bool ingress)

{

	const struct tc_action *a;

	LIST_HEAD(actions);

	int err;



	if (!tc_single_action(cls->exts)) {
@@ -1128,7 +1129,8 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port, 
		return -ENOTSUPP;

	}



	tc_for_each_action(a, cls->exts) {

	tcf_exts_to_list(cls->exts, &actions);

	list_for_each_entry(a, &actions, list) {

		if (!is_tcf_mirred_mirror(a) || protocol != htons(ETH_P_ALL))

			return -ENOTSUPP;

include/net/act_api.h

+5 −18
Original line number Diff line number Diff line
@@ -176,8 +176,8 @@ int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops); 
int tcf_unregister_action(struct tc_action_ops *a,

			  struct pernet_operations *ops);

int tcf_action_destroy(struct list_head *actions, int bind);

int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions,

		    struct tcf_result *res);

int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,

		    int nr_actions, struct tcf_result *res);

int tcf_action_init(struct net *net, struct nlattr *nla,

				  struct nlattr *est, char *n, int ovr,

				  int bind, struct list_head *);
@@ -189,30 +189,17 @@ int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); 
int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);

int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);



#define tc_no_actions(_exts) \

	(list_empty(&(_exts)->actions))



#define tc_for_each_action(_a, _exts) \

	list_for_each_entry(a, &(_exts)->actions, list)



#define tc_single_action(_exts) \

	(list_is_singular(&(_exts)->actions))

#endif /* CONFIG_NET_CLS_ACT */



static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,

					   u64 packets, u64 lastuse)

{

#ifdef CONFIG_NET_CLS_ACT

	if (!a->ops->stats_update)

		return;



	a->ops->stats_update(a, bytes, packets, lastuse);

#endif

}



#else /* CONFIG_NET_CLS_ACT */



#define tc_no_actions(_exts) true

#define tc_for_each_action(_a, _exts) while ((void)(_a), 0)

#define tc_single_action(_exts) false

#define tcf_action_stats_update(a, bytes, packets, lastuse)



#endif /* CONFIG_NET_CLS_ACT */

#endif

include/net/pkt_cls.h

+36 −5
Original line number Diff line number Diff line
@@ -59,7 +59,8 @@ tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 
struct tcf_exts {

#ifdef CONFIG_NET_CLS_ACT

	__u32	type; /* for backward compat(TCA_OLD_COMPAT) */

	struct list_head actions;

	int nr_actions;

	struct tc_action **actions;

#endif

	/* Map to export classifier specific extension TLV types to the

	 * generic extensions API. Unsupported extensions must be set to 0.
@@ -72,7 +73,10 @@ static inline void tcf_exts_init(struct tcf_exts *exts, int action, int police) 
{

#ifdef CONFIG_NET_CLS_ACT

	exts->type = 0;

	INIT_LIST_HEAD(&exts->actions);

	exts->nr_actions = 0;

	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),

				GFP_KERNEL);

	WARN_ON(!exts->actions); /* TODO: propagate the error to callers */

#endif

	exts->action = action;

	exts->police = police;
@@ -89,7 +93,7 @@ static inline int 
tcf_exts_is_predicative(struct tcf_exts *exts)

{

#ifdef CONFIG_NET_CLS_ACT

	return !list_empty(&exts->actions);

	return exts->nr_actions;

#else

	return 0;

#endif
@@ -108,6 +112,20 @@ tcf_exts_is_available(struct tcf_exts *exts) 
	return tcf_exts_is_predicative(exts);

}



static inline void tcf_exts_to_list(const struct tcf_exts *exts,

				    struct list_head *actions)

{

#ifdef CONFIG_NET_CLS_ACT

	int i;



	for (i = 0; i < exts->nr_actions; i++) {

		struct tc_action *a = exts->actions[i];



		list_add(&a->list, actions);

	}

#endif

}



/**

 * tcf_exts_exec - execute tc filter extensions

 * @skb: socket buffer
@@ -124,12 +142,25 @@ tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 
	       struct tcf_result *res)

{

#ifdef CONFIG_NET_CLS_ACT

	if (!list_empty(&exts->actions))

		return tcf_action_exec(skb, &exts->actions, res);

	if (exts->nr_actions)

		return tcf_action_exec(skb, exts->actions, exts->nr_actions,

				       res);

#endif

	return 0;

}



#ifdef CONFIG_NET_CLS_ACT



#define tc_no_actions(_exts)  ((_exts)->nr_actions == 0)

#define tc_single_action(_exts) ((_exts)->nr_actions == 1)



#else /* CONFIG_NET_CLS_ACT */



#define tc_no_actions(_exts) true

#define tc_single_action(_exts) false



#endif /* CONFIG_NET_CLS_ACT */



int tcf_exts_validate(struct net *net, struct tcf_proto *tp,

		      struct nlattr **tb, struct nlattr *rate_tlv,

		      struct tcf_exts *exts, bool ovr);