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path: root/net/sched/act_api.c
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Diffstat (limited to 'net/sched/act_api.c')
-rw-r--r--net/sched/act_api.c84
1 files changed, 46 insertions, 38 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 87818d7fb623..36022605fc16 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -69,7 +69,7 @@ static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
{
struct tcf_common *p;
int err = 0, index = -1,i = 0, s_i = 0, n_i = 0;
- struct nlattr *r ;
+ struct nlattr *nest;
read_lock_bh(hinfo->lock);
@@ -84,15 +84,17 @@ static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
continue;
a->priv = p;
a->order = n_i;
- r = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, a->order, 0, NULL);
+
+ nest = nla_nest_start(skb, a->order);
+ if (nest == NULL)
+ goto nla_put_failure;
err = tcf_action_dump_1(skb, a, 0, 0);
if (err < 0) {
index--;
- nlmsg_trim(skb, r);
+ nlmsg_trim(skb, nest);
goto done;
}
- r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
n_i++;
if (n_i >= TCA_ACT_MAX_PRIO)
goto done;
@@ -105,7 +107,7 @@ done:
return n_i;
nla_put_failure:
- nlmsg_trim(skb, r);
+ nla_nest_cancel(skb, nest);
goto done;
}
@@ -113,11 +115,12 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a,
struct tcf_hashinfo *hinfo)
{
struct tcf_common *p, *s_p;
- struct nlattr *r ;
+ struct nlattr *nest;
int i= 0, n_i = 0;
- r = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, a->order, 0, NULL);
+ nest = nla_nest_start(skb, a->order);
+ if (nest == NULL)
+ goto nla_put_failure;
NLA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
for (i = 0; i < (hinfo->hmask + 1); i++) {
p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
@@ -131,11 +134,11 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a,
}
}
NLA_PUT(skb, TCA_FCNT, 4, &n_i);
- r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
return n_i;
nla_put_failure:
- nlmsg_trim(skb, r);
+ nla_nest_cancel(skb, nest);
return -EINVAL;
}
@@ -415,7 +418,7 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
int err = -EINVAL;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *r;
+ struct nlattr *nest;
if (a->ops == NULL || a->ops->dump == NULL)
return err;
@@ -423,10 +426,11 @@ tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
NLA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
if (tcf_action_copy_stats(skb, a, 0))
goto nla_put_failure;
- r = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if ((err = tcf_action_dump_old(skb, a, bind, ref)) > 0) {
- r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
return err;
}
@@ -441,17 +445,17 @@ tcf_action_dump(struct sk_buff *skb, struct tc_action *act, int bind, int ref)
{
struct tc_action *a;
int err = -EINVAL;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *r ;
+ struct nlattr *nest;
while ((a = act) != NULL) {
- r = (struct nlattr *)skb_tail_pointer(skb);
act = a->next;
- NLA_PUT(skb, a->order, 0, NULL);
+ nest = nla_nest_start(skb, a->order);
+ if (nest == NULL)
+ goto nla_put_failure;
err = tcf_action_dump_1(skb, a, bind, ref);
if (err < 0)
goto errout;
- r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
}
return 0;
@@ -459,7 +463,7 @@ tcf_action_dump(struct sk_buff *skb, struct tc_action *act, int bind, int ref)
nla_put_failure:
err = -EINVAL;
errout:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return err;
}
@@ -627,7 +631,7 @@ tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
struct tcamsg *t;
struct nlmsghdr *nlh;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *x;
+ struct nlattr *nest;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
@@ -636,13 +640,14 @@ tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
+ nest = nla_nest_start(skb, TCA_ACT_TAB);
+ if (nest == NULL)
+ goto nla_put_failure;
if (tcf_action_dump(skb, a, bind, ref) < 0)
goto nla_put_failure;
- x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
+ nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
@@ -743,7 +748,7 @@ static int tca_action_flush(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
struct nlmsghdr *nlh;
struct tcamsg *t;
struct netlink_callback dcb;
- struct nlattr *x;
+ struct nlattr *nest;
struct nlattr *tb[TCA_ACT_MAX+1];
struct nlattr *kind;
struct tc_action *a = create_a(0);
@@ -779,14 +784,15 @@ static int tca_action_flush(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
+ nest = nla_nest_start(skb, TCA_ACT_TAB);
+ if (nest == NULL)
+ goto nla_put_failure;
err = a->ops->walk(skb, &dcb, RTM_DELACTION, a);
if (err < 0)
goto nla_put_failure;
- x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
+ nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
nlh->nlmsg_flags |= NLM_F_ROOT;
@@ -875,7 +881,7 @@ static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
struct tcamsg *t;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- struct nlattr *x;
+ struct nlattr *nest;
unsigned char *b;
int err = 0;
@@ -891,13 +897,14 @@ static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
+ nest = nla_nest_start(skb, TCA_ACT_TAB);
+ if (nest == NULL)
+ goto nla_put_failure;
if (tcf_action_dump(skb, a, 0, 0) < 0)
goto nla_put_failure;
- x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
+ nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
NETLINK_CB(skb).dst_group = RTNLGRP_TC;
@@ -1025,7 +1032,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
struct net *net = skb->sk->sk_net;
struct nlmsghdr *nlh;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *x;
+ struct nlattr *nest;
struct tc_action_ops *a_o;
struct tc_action a;
int ret = 0;
@@ -1060,18 +1067,19 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
+ nest = nla_nest_start(skb, TCA_ACT_TAB);
+ if (nest == NULL)
+ goto nla_put_failure;
ret = a_o->walk(skb, cb, RTM_GETACTION, &a);
if (ret < 0)
goto nla_put_failure;
if (ret > 0) {
- x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
+ nla_nest_end(skb, nest);
ret = skb->len;
} else
- nlmsg_trim(skb, x);
+ nla_nest_cancel(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
if (NETLINK_CB(cb->skb).pid && ret)
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-06 00:04:54 +0000