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Commit d04e6990 authored by Roman Mashak's avatar Roman Mashak Committed by David S. Miller
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net sched actions: update Add/Delete action API with new argument 



Introduce a new function argument to carry total attributes size for
correct allocation of skb in event messages.

Signed-off-by: default avatarRoman Mashak <mrv@mojatatu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 79134e6c

include/net/act_api.h

+2 −1
Original line number Diff line number Diff line
@@ -166,7 +166,8 @@ 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 tcf_proto *tp, struct nlattr *nla,

		    struct nlattr *est, char *name, int ovr, int bind,

		    struct list_head *actions, struct netlink_ext_ack *extack);

		    struct list_head *actions, size_t *attr_size,

		    struct netlink_ext_ack *extack);

struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,

				    struct nlattr *nla, struct nlattr *est,

				    char *name, int ovr, int bind,

net/sched/act_api.c

+13 −8
Original line number Diff line number Diff line
@@ -741,7 +741,8 @@ static void cleanup_a(struct list_head *actions, int ovr) 


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

		    struct nlattr *est, char *name, int ovr, int bind,

		    struct list_head *actions, struct netlink_ext_ack *extack)

		    struct list_head *actions, size_t *attr_size,

		    struct netlink_ext_ack *extack)

{

	struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];

	struct tc_action *act;
@@ -994,12 +995,13 @@ static int tca_action_flush(struct net *net, struct nlattr *nla, 


static int

tcf_del_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,

	       u32 portid, struct netlink_ext_ack *extack)

	       u32 portid, size_t attr_size, struct netlink_ext_ack *extack)

{

	int ret;

	struct sk_buff *skb;



	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);

	skb = alloc_skb(attr_size <= NLMSG_GOODSIZE ? NLMSG_GOODSIZE : attr_size,

			GFP_KERNEL);

	if (!skb)

		return -ENOBUFS;
@@ -1032,6 +1034,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n, 
	int i, ret;

	struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];

	struct tc_action *act;

	size_t attr_size = 0;

	LIST_HEAD(actions);



	ret = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL, extack);
@@ -1059,7 +1062,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n, 
	if (event == RTM_GETACTION)

		ret = tcf_get_notify(net, portid, n, &actions, event, extack);

	else { /* delete */

		ret = tcf_del_notify(net, n, &actions, portid, extack);

		ret = tcf_del_notify(net, n, &actions, portid, attr_size, extack);

		if (ret)

			goto err;

		return ret;
@@ -1072,12 +1075,13 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n, 


static int

tcf_add_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,

	       u32 portid, struct netlink_ext_ack *extack)

	       u32 portid, size_t attr_size, struct netlink_ext_ack *extack)

{

	struct sk_buff *skb;

	int err = 0;



	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);

	skb = alloc_skb(attr_size <= NLMSG_GOODSIZE ? NLMSG_GOODSIZE : attr_size,

			GFP_KERNEL);

	if (!skb)

		return -ENOBUFS;
@@ -1099,15 +1103,16 @@ static int tcf_action_add(struct net *net, struct nlattr *nla, 
			  struct nlmsghdr *n, u32 portid, int ovr,

			  struct netlink_ext_ack *extack)

{

	size_t attr_size = 0;

	int ret = 0;

	LIST_HEAD(actions);



	ret = tcf_action_init(net, NULL, nla, NULL, NULL, ovr, 0, &actions,

			      extack);

			      &attr_size, extack);

	if (ret)

		return ret;



	return tcf_add_notify(net, n, &actions, portid, extack);

	return tcf_add_notify(net, n, &actions, portid, attr_size, extack);

}



static u32 tcaa_root_flags_allowed = TCA_FLAG_LARGE_DUMP_ON;

net/sched/cls_api.c

+2 −1
Original line number Diff line number Diff line
@@ -1433,6 +1433,7 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb, 
#ifdef CONFIG_NET_CLS_ACT

	{

		struct tc_action *act;

		size_t attr_size = 0;



		if (exts->police && tb[exts->police]) {

			act = tcf_action_init_1(net, tp, tb[exts->police],
@@ -1450,7 +1451,7 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb, 


			err = tcf_action_init(net, tp, tb[exts->action],

					      rate_tlv, NULL, ovr, TCA_ACT_BIND,

					      &actions, extack);

					      &actions, &attr_size, extack);

			if (err)

				return err;

			list_for_each_entry(act, &actions, list)