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Message-Id: <20080123163604.6459.5104.sendpatchset@localhost.localdomain>
Date: Wed, 23 Jan 2008 17:36:45 +0100 (MET)
From: Patrick McHardy <kaber@...sh.net>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>
Subject: [NET_SCHED 07/15]: Use nla_nest_start/nla_nest_end
[NET_SCHED]: Use nla_nest_start/nla_nest_end
Use nla_nest_start/nla_nest_end for dumping nested attributes.
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
commit bdd38a3b14cfa340da580f6e825d7f1142925926
tree 36dc82b63837c96b0f5e1b5c508f789abe7414e8
parent f9b5ab497909e836983bc31e5e7ad5065ccba6bc
author Patrick McHardy <kaber@...sh.net> Wed, 23 Jan 2008 17:12:54 +0100
committer Patrick McHardy <kaber@...sh.net> Wed, 23 Jan 2008 17:12:54 +0100
net/sched/act_api.c | 84 ++++++++++++++++++++++++++---------------------
net/sched/act_police.c | 13 ++++---
net/sched/cls_api.c | 14 +++++---
net/sched/cls_basic.c | 12 +++----
net/sched/cls_fw.c | 9 +++--
net/sched/cls_route.c | 9 +++--
net/sched/cls_rsvp.h | 10 +++---
net/sched/cls_tcindex.c | 13 ++++---
net/sched/cls_u32.c | 13 ++++---
net/sched/ematch.c | 16 ++++++---
net/sched/sch_atm.c | 15 +++++---
net/sched/sch_cbq.c | 24 +++++++------
net/sched/sch_hfsc.c | 11 +++---
net/sched/sch_htb.c | 32 +++++++++++-------
net/sched/sch_ingress.c | 12 +++----
net/sched/sch_tbf.c | 12 +++----
16 files changed, 166 insertions(+), 133 deletions(-)
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 87818d7..3602260 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)
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index c0fce9b..ee2f1b6 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -54,7 +54,7 @@ static int tcf_act_police_walker(struct sk_buff *skb, struct netlink_callback *c
{
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(&police_lock);
@@ -69,18 +69,19 @@ static int tcf_act_police_walker(struct sk_buff *skb, struct netlink_callback *c
continue;
a->priv = p;
a->order = index;
- 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;
if (type == RTM_DELACTION)
err = tcf_action_dump_1(skb, a, 0, 1);
else
err = tcf_action_dump_1(skb, a, 0, 0);
if (err < 0) {
index--;
- nlmsg_trim(skb, r);
+ nla_nest_cancel(skb, nest);
goto done;
}
- r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
n_i++;
}
}
@@ -91,7 +92,7 @@ done:
return n_i;
nla_put_failure:
- nlmsg_trim(skb, r);
+ nla_nest_cancel(skb, nest);
goto done;
}
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 92fa155..5584e7c 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -544,18 +544,22 @@ int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
* to work with both old and new modes of entering
* tc data even if iproute2 was newer - jhs
*/
- struct nlattr *p_rta = (struct nlattr *)skb_tail_pointer(skb);
+ struct nlattr *nest;
if (exts->action->type != TCA_OLD_COMPAT) {
- NLA_PUT(skb, map->action, 0, NULL);
+ nest = nla_nest_start(skb, map->action);
+ if (nest == NULL)
+ goto nla_put_failure;
if (tcf_action_dump(skb, exts->action, 0, 0) < 0)
goto nla_put_failure;
- p_rta->nla_len = skb_tail_pointer(skb) - (u8 *)p_rta;
+ nla_nest_end(skb, nest);
} else if (map->police) {
- NLA_PUT(skb, map->police, 0, NULL);
+ nest = nla_nest_start(skb, map->police);
+ if (nest == NULL)
+ goto nla_put_failure;
if (tcf_action_dump_old(skb, exts->action, 0, 0) < 0)
goto nla_put_failure;
- p_rta->nla_len = skb_tail_pointer(skb) - (u8 *)p_rta;
+ nla_nest_end(skb, nest);
}
}
#endif
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index 524b788..6d08b42 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -246,16 +246,16 @@ static int basic_dump(struct tcf_proto *tp, unsigned long fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct basic_filter *f = (struct basic_filter *) fh;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
if (f == NULL)
return skb->len;
t->tcm_handle = f->handle;
- nla = (struct nlattr *) b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (f->res.classid)
NLA_PUT(skb, TCA_BASIC_CLASSID, sizeof(u32), &f->res.classid);
@@ -264,11 +264,11 @@ static int basic_dump(struct tcf_proto *tp, unsigned long fh,
tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index a1a9f4d..e3dfbb3 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -334,7 +334,7 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh,
struct fw_head *head = (struct fw_head *)tp->root;
struct fw_filter *f = (struct fw_filter*)fh;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
if (f == NULL)
return skb->len;
@@ -344,8 +344,9 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh,
if (!f->res.classid && !tcf_exts_is_available(&f->exts))
return skb->len;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (f->res.classid)
NLA_PUT(skb, TCA_FW_CLASSID, 4, &f->res.classid);
@@ -359,7 +360,7 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh,
if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
goto nla_put_failure;
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 3aa8109..1ce1f36 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -551,7 +551,7 @@ static int route4_dump(struct tcf_proto *tp, unsigned long fh,
{
struct route4_filter *f = (struct route4_filter*)fh;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
u32 id;
if (f == NULL)
@@ -559,8 +559,9 @@ static int route4_dump(struct tcf_proto *tp, unsigned long fh,
t->tcm_handle = f->handle;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (!(f->handle&0x8000)) {
id = f->id&0xFF;
@@ -579,7 +580,7 @@ static int route4_dump(struct tcf_proto *tp, unsigned long fh,
if (tcf_exts_dump(skb, &f->exts, &route_ext_map) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0)
goto nla_put_failure;
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
index 5747408..77097e0 100644
--- a/net/sched/cls_rsvp.h
+++ b/net/sched/cls_rsvp.h
@@ -595,7 +595,7 @@ static int rsvp_dump(struct tcf_proto *tp, unsigned long fh,
struct rsvp_filter *f = (struct rsvp_filter*)fh;
struct rsvp_session *s;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
struct tc_rsvp_pinfo pinfo;
if (f == NULL)
@@ -604,9 +604,9 @@ static int rsvp_dump(struct tcf_proto *tp, unsigned long fh,
t->tcm_handle = f->handle;
-
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
NLA_PUT(skb, TCA_RSVP_DST, sizeof(s->dst), &s->dst);
pinfo.dpi = s->dpi;
@@ -624,7 +624,7 @@ static int rsvp_dump(struct tcf_proto *tp, unsigned long fh,
if (tcf_exts_dump(skb, &f->exts, &rsvp_ext_map) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &rsvp_ext_map) < 0)
goto nla_put_failure;
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index 6b84d27..cd350d3 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -437,13 +437,16 @@ static int tcindex_dump(struct tcf_proto *tp, unsigned long fh,
struct tcindex_data *p = PRIV(tp);
struct tcindex_filter_result *r = (struct tcindex_filter_result *) fh;
unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
pr_debug("tcindex_dump(tp %p,fh 0x%lx,skb %p,t %p),p %p,r %p,b %p\n",
tp, fh, skb, t, p, r, b);
pr_debug("p->perfect %p p->h %p\n", p->perfect, p->h);
- nla = (struct nlattr *) b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+
if (!fh) {
t->tcm_handle = ~0; /* whatever ... */
NLA_PUT(skb, TCA_TCINDEX_HASH, sizeof(p->hash), &p->hash);
@@ -451,7 +454,7 @@ static int tcindex_dump(struct tcf_proto *tp, unsigned long fh,
NLA_PUT(skb, TCA_TCINDEX_SHIFT, sizeof(p->shift), &p->shift);
NLA_PUT(skb, TCA_TCINDEX_FALL_THROUGH, sizeof(p->fall_through),
&p->fall_through);
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
} else {
if (p->perfect) {
t->tcm_handle = r-p->perfect;
@@ -474,7 +477,7 @@ static int tcindex_dump(struct tcf_proto *tp, unsigned long fh,
if (tcf_exts_dump(skb, &r->exts, &tcindex_ext_map) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &r->exts, &tcindex_ext_map) < 0)
goto nla_put_failure;
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 3228cc4..b51c2c3 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -694,16 +694,16 @@ static int u32_dump(struct tcf_proto *tp, unsigned long fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct tc_u_knode *n = (struct tc_u_knode*)fh;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
if (n == NULL)
return skb->len;
t->tcm_handle = n->handle;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (TC_U32_KEY(n->handle) == 0) {
struct tc_u_hnode *ht = (struct tc_u_hnode*)fh;
@@ -741,14 +741,15 @@ static int u32_dump(struct tcf_proto *tp, unsigned long fh,
#endif
}
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
+
if (TC_U32_KEY(n->handle))
if (tcf_exts_dump_stats(skb, &n->exts, &u32_ext_map) < 0)
goto nla_put_failure;
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/ematch.c b/net/sched/ematch.c
index d2b480f..daa9c4e 100644
--- a/net/sched/ematch.c
+++ b/net/sched/ematch.c
@@ -436,14 +436,18 @@ int tcf_em_tree_dump(struct sk_buff *skb, struct tcf_ematch_tree *tree, int tlv)
{
int i;
u8 *tail;
- struct nlattr *top_start = (struct nlattr *)skb_tail_pointer(skb);
+ struct nlattr *top_start;
struct nlattr *list_start;
- NLA_PUT(skb, tlv, 0, NULL);
+ top_start = nla_nest_start(skb, tlv);
+ if (top_start == NULL)
+ goto nla_put_failure;
+
NLA_PUT(skb, TCA_EMATCH_TREE_HDR, sizeof(tree->hdr), &tree->hdr);
- list_start = (struct nlattr *)skb_tail_pointer(skb);
- NLA_PUT(skb, TCA_EMATCH_TREE_LIST, 0, NULL);
+ list_start = nla_nest_start(skb, TCA_EMATCH_TREE_LIST);
+ if (list_start == NULL)
+ goto nla_put_failure;
tail = skb_tail_pointer(skb);
for (i = 0; i < tree->hdr.nmatches; i++) {
@@ -470,8 +474,8 @@ int tcf_em_tree_dump(struct sk_buff *skb, struct tcf_ematch_tree *tree, int tlv)
match_start->nla_len = tail - (u8 *)match_start;
}
- list_start->nla_len = tail - (u8 *)list_start;
- top_start->nla_len = tail - (u8 *)top_start;
+ nla_nest_end(skb, list_start);
+ nla_nest_end(skb, top_start);
return 0;
diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c
index aaa32a2..19c0007 100644
--- a/net/sched/sch_atm.c
+++ b/net/sched/sch_atm.c
@@ -605,8 +605,7 @@ static int atm_tc_dump_class(struct Qdisc *sch, unsigned long cl,
{
struct atm_qdisc_data *p = qdisc_priv(sch);
struct atm_flow_data *flow = (struct atm_flow_data *)cl;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
pr_debug("atm_tc_dump_class(sch %p,[qdisc %p],flow %p,skb %p,tcm %p)\n",
sch, p, flow, skb, tcm);
@@ -614,8 +613,11 @@ static int atm_tc_dump_class(struct Qdisc *sch, unsigned long cl,
return -EINVAL;
tcm->tcm_handle = flow->classid;
tcm->tcm_info = flow->q->handle;
- nla = (struct nlattr *)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+
NLA_PUT(skb, TCA_ATM_HDR, flow->hdr_len, flow->hdr);
if (flow->vcc) {
struct sockaddr_atmpvc pvc;
@@ -636,11 +638,12 @@ static int atm_tc_dump_class(struct Qdisc *sch, unsigned long cl,
NLA_PUT(skb, TCA_ATM_EXCESS, sizeof(zero), &zero);
}
- nla->nla_len = skb_tail_pointer(skb) - b;
+
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
static int
diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 585f8a6..da0f6c0 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1565,18 +1565,18 @@ static int cbq_dump_attr(struct sk_buff *skb, struct cbq_class *cl)
static int cbq_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct cbq_sched_data *q = qdisc_priv(sch);
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (cbq_dump_attr(skb, &q->link) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
@@ -1594,8 +1594,7 @@ cbq_dump_class(struct Qdisc *sch, unsigned long arg,
struct sk_buff *skb, struct tcmsg *tcm)
{
struct cbq_class *cl = (struct cbq_class*)arg;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
if (cl->tparent)
tcm->tcm_parent = cl->tparent->classid;
@@ -1604,15 +1603,16 @@ cbq_dump_class(struct Qdisc *sch, unsigned long arg,
tcm->tcm_handle = cl->classid;
tcm->tcm_info = cl->q->handle;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (cbq_dump_attr(skb, cl) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index fcb4826..54c3e90 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1343,22 +1343,23 @@ hfsc_dump_class(struct Qdisc *sch, unsigned long arg, struct sk_buff *skb,
struct tcmsg *tcm)
{
struct hfsc_class *cl = (struct hfsc_class *)arg;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla = (struct nlattr *)b;
+ struct nlattr *nest;
tcm->tcm_parent = cl->cl_parent ? cl->cl_parent->classid : TC_H_ROOT;
tcm->tcm_handle = cl->classid;
if (cl->level == 0)
tcm->tcm_info = cl->qdisc->handle;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
if (hfsc_dump_curves(skb, cl) < 0)
goto nla_put_failure;
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 512df9a..69fac32 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1043,25 +1043,29 @@ static int htb_init(struct Qdisc *sch, struct nlattr *opt)
static int htb_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct htb_sched *q = qdisc_priv(sch);
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
struct tc_htb_glob gopt;
+
spin_lock_bh(&sch->dev->queue_lock);
- gopt.direct_pkts = q->direct_pkts;
+ gopt.direct_pkts = q->direct_pkts;
gopt.version = HTB_VER;
gopt.rate2quantum = q->rate2quantum;
gopt.defcls = q->defcls;
gopt.debug = 0;
- nla = (struct nlattr *)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
NLA_PUT(skb, TCA_HTB_INIT, sizeof(gopt), &gopt);
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
+
spin_unlock_bh(&sch->dev->queue_lock);
return skb->len;
+
nla_put_failure:
spin_unlock_bh(&sch->dev->queue_lock);
- nlmsg_trim(skb, skb_tail_pointer(skb));
+ nla_nest_cancel(skb, nest);
return -1;
}
@@ -1069,8 +1073,7 @@ static int htb_dump_class(struct Qdisc *sch, unsigned long arg,
struct sk_buff *skb, struct tcmsg *tcm)
{
struct htb_class *cl = (struct htb_class *)arg;
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
struct tc_htb_opt opt;
spin_lock_bh(&sch->dev->queue_lock);
@@ -1079,8 +1082,9 @@ static int htb_dump_class(struct Qdisc *sch, unsigned long arg,
if (!cl->level && cl->un.leaf.q)
tcm->tcm_info = cl->un.leaf.q->handle;
- nla = (struct nlattr *)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
memset(&opt, 0, sizeof(opt));
@@ -1092,12 +1096,14 @@ static int htb_dump_class(struct Qdisc *sch, unsigned long arg,
opt.prio = cl->un.leaf.prio;
opt.level = cl->level;
NLA_PUT(skb, TCA_HTB_PARMS, sizeof(opt), &opt);
- nla->nla_len = skb_tail_pointer(skb) - b;
+
+ nla_nest_end(skb, nest);
spin_unlock_bh(&sch->dev->queue_lock);
return skb->len;
+
nla_put_failure:
spin_unlock_bh(&sch->dev->queue_lock);
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c
index f6decbb..3f72d52 100644
--- a/net/sched/sch_ingress.c
+++ b/net/sched/sch_ingress.c
@@ -183,16 +183,16 @@ static void ingress_destroy(struct Qdisc *sch)
static int ingress_dump(struct Qdisc *sch, struct sk_buff *skb)
{
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
- nla = (struct nlattr *)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index f9b1543..b7a185d 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -375,12 +375,12 @@ static void tbf_destroy(struct Qdisc *sch)
static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct tbf_sched_data *q = qdisc_priv(sch);
- unsigned char *b = skb_tail_pointer(skb);
- struct nlattr *nla;
+ struct nlattr *nest;
struct tc_tbf_qopt opt;
- nla = (struct nlattr*)b;
- NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
opt.limit = q->limit;
opt.rate = q->R_tab->rate;
@@ -391,12 +391,12 @@ static int tbf_dump(struct Qdisc *sch, struct sk_buff *skb)
opt.mtu = q->mtu;
opt.buffer = q->buffer;
NLA_PUT(skb, TCA_TBF_PARMS, sizeof(opt), &opt);
- nla->nla_len = skb_tail_pointer(skb) - b;
+ nla_nest_end(skb, nest);
return skb->len;
nla_put_failure:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return -1;
}
--
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