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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.c340
1 files changed, 186 insertions, 154 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 72cdb0fade2..0b8eb235bc1 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -18,6 +18,9 @@
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/kmod.h>
+#include <linux/err.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
#include <net/sch_generic.h>
#include <net/act_api.h>
#include <net/netlink.h>
@@ -66,7 +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 rtattr *r ;
+ struct nlattr *nest;
read_lock_bh(hinfo->lock);
@@ -81,15 +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 rtattr *)skb_tail_pointer(skb);
- RTA_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->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
n_i++;
if (n_i >= TCA_ACT_MAX_PRIO)
goto done;
@@ -101,8 +106,8 @@ done:
cb->args[0] += n_i;
return n_i;
-rtattr_failure:
- nlmsg_trim(skb, r);
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
goto done;
}
@@ -110,12 +115,13 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a,
struct tcf_hashinfo *hinfo)
{
struct tcf_common *p, *s_p;
- struct rtattr *r ;
+ struct nlattr *nest;
int i= 0, n_i = 0;
- r = (struct rtattr *)skb_tail_pointer(skb);
- RTA_PUT(skb, a->order, 0, NULL);
- RTA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
+ nest = nla_nest_start(skb, a->order);
+ if (nest == NULL)
+ goto nla_put_failure;
+ NLA_PUT_STRING(skb, TCA_KIND, a->ops->kind);
for (i = 0; i < (hinfo->hmask + 1); i++) {
p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
@@ -127,12 +133,12 @@ static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a,
p = s_p;
}
}
- RTA_PUT(skb, TCA_FCNT, 4, &n_i);
- r->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+ NLA_PUT_U32(skb, TCA_FCNT, n_i);
+ nla_nest_end(skb, nest);
return n_i;
-rtattr_failure:
- nlmsg_trim(skb, r);
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
return -EINVAL;
}
@@ -209,7 +215,7 @@ struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind,
}
EXPORT_SYMBOL(tcf_hash_check);
-struct tcf_common *tcf_hash_create(u32 index, struct rtattr *est, struct tc_action *a, int size, int bind, u32 *idx_gen, struct tcf_hashinfo *hinfo)
+struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a, int size, int bind, u32 *idx_gen, struct tcf_hashinfo *hinfo)
{
struct tcf_common *p = kzalloc(size, GFP_KERNEL);
@@ -261,6 +267,7 @@ int tcf_register_action(struct tc_action_ops *act)
write_unlock(&act_mod_lock);
return 0;
}
+EXPORT_SYMBOL(tcf_register_action);
int tcf_unregister_action(struct tc_action_ops *act)
{
@@ -279,6 +286,7 @@ int tcf_unregister_action(struct tc_action_ops *act)
write_unlock(&act_mod_lock);
return err;
}
+EXPORT_SYMBOL(tcf_unregister_action);
/* lookup by name */
static struct tc_action_ops *tc_lookup_action_n(char *kind)
@@ -301,15 +309,15 @@ static struct tc_action_ops *tc_lookup_action_n(char *kind)
return a;
}
-/* lookup by rtattr */
-static struct tc_action_ops *tc_lookup_action(struct rtattr *kind)
+/* lookup by nlattr */
+static struct tc_action_ops *tc_lookup_action(struct nlattr *kind)
{
struct tc_action_ops *a = NULL;
if (kind) {
read_lock(&act_mod_lock);
for (a = act_base; a; a = a->next) {
- if (rtattr_strcmp(kind, a->kind) == 0) {
+ if (nla_strcmp(kind, a->kind) == 0) {
if (!try_module_get(a->owner)) {
read_unlock(&act_mod_lock);
return NULL;
@@ -375,6 +383,7 @@ repeat:
exec_done:
return ret;
}
+EXPORT_SYMBOL(tcf_action_exec);
void tcf_action_destroy(struct tc_action *act, int bind)
{
@@ -409,73 +418,77 @@ 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 rtattr *r;
+ struct nlattr *nest;
if (a->ops == NULL || a->ops->dump == NULL)
return err;
- RTA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
+ NLA_PUT_STRING(skb, TCA_KIND, a->ops->kind);
if (tcf_action_copy_stats(skb, a, 0))
- goto rtattr_failure;
- r = (struct rtattr *)skb_tail_pointer(skb);
- RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
+ goto nla_put_failure;
+ 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->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
return err;
}
-rtattr_failure:
+nla_put_failure:
nlmsg_trim(skb, b);
return -1;
}
+EXPORT_SYMBOL(tcf_action_dump_1);
int
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 rtattr *r ;
+ struct nlattr *nest;
while ((a = act) != NULL) {
- r = (struct rtattr *)skb_tail_pointer(skb);
act = a->next;
- RTA_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->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+ nla_nest_end(skb, nest);
}
return 0;
-rtattr_failure:
+nla_put_failure:
err = -EINVAL;
errout:
- nlmsg_trim(skb, b);
+ nla_nest_cancel(skb, nest);
return err;
}
-struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est,
- char *name, int ovr, int bind, int *err)
+struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est,
+ char *name, int ovr, int bind)
{
struct tc_action *a;
struct tc_action_ops *a_o;
char act_name[IFNAMSIZ];
- struct rtattr *tb[TCA_ACT_MAX+1];
- struct rtattr *kind;
-
- *err = -EINVAL;
+ struct nlattr *tb[TCA_ACT_MAX+1];
+ struct nlattr *kind;
+ int err;
if (name == NULL) {
- if (rtattr_parse_nested(tb, TCA_ACT_MAX, rta) < 0)
+ err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+ if (err < 0)
goto err_out;
- kind = tb[TCA_ACT_KIND-1];
+ err = -EINVAL;
+ kind = tb[TCA_ACT_KIND];
if (kind == NULL)
goto err_out;
- if (rtattr_strlcpy(act_name, kind, IFNAMSIZ) >= IFNAMSIZ)
+ if (nla_strlcpy(act_name, kind, IFNAMSIZ) >= IFNAMSIZ)
goto err_out;
} else {
+ err = -EINVAL;
if (strlcpy(act_name, name, IFNAMSIZ) >= IFNAMSIZ)
goto err_out;
}
@@ -496,36 +509,35 @@ struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est,
* indicate this using -EAGAIN.
*/
if (a_o != NULL) {
- *err = -EAGAIN;
+ err = -EAGAIN;
goto err_mod;
}
#endif
- *err = -ENOENT;
+ err = -ENOENT;
goto err_out;
}
- *err = -ENOMEM;
+ err = -ENOMEM;
a = kzalloc(sizeof(*a), GFP_KERNEL);
if (a == NULL)
goto err_mod;
/* backward compatibility for policer */
if (name == NULL)
- *err = a_o->init(tb[TCA_ACT_OPTIONS-1], est, a, ovr, bind);
+ err = a_o->init(tb[TCA_ACT_OPTIONS], est, a, ovr, bind);
else
- *err = a_o->init(rta, est, a, ovr, bind);
- if (*err < 0)
+ err = a_o->init(nla, est, a, ovr, bind);
+ if (err < 0)
goto err_free;
/* module count goes up only when brand new policy is created
if it exists and is only bound to in a_o->init() then
ACT_P_CREATED is not returned (a zero is).
*/
- if (*err != ACT_P_CREATED)
+ if (err != ACT_P_CREATED)
module_put(a_o->owner);
a->ops = a_o;
- *err = 0;
return a;
err_free:
@@ -533,26 +545,26 @@ err_free:
err_mod:
module_put(a_o->owner);
err_out:
- return NULL;
+ return ERR_PTR(err);
}
-struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est,
- char *name, int ovr, int bind, int *err)
+struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est,
+ char *name, int ovr, int bind)
{
- struct rtattr *tb[TCA_ACT_MAX_PRIO+1];
+ struct nlattr *tb[TCA_ACT_MAX_PRIO+1];
struct tc_action *head = NULL, *act, *act_prev = NULL;
+ int err;
int i;
- if (rtattr_parse_nested(tb, TCA_ACT_MAX_PRIO, rta) < 0) {
- *err = -EINVAL;
- return head;
- }
+ err = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL);
+ if (err < 0)
+ return ERR_PTR(err);
- for (i=0; i < TCA_ACT_MAX_PRIO && tb[i]; i++) {
- act = tcf_action_init_1(tb[i], est, name, ovr, bind, err);
- if (act == NULL)
+ for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
+ act = tcf_action_init_1(tb[i], est, name, ovr, bind);
+ if (IS_ERR(act))
goto err;
- act->order = i+1;
+ act->order = i;
if (head == NULL)
head = act;
@@ -565,7 +577,7 @@ struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est,
err:
if (head != NULL)
tcf_action_destroy(head, bind);
- return NULL;
+ return act;
}
int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *a,
@@ -619,7 +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 rtattr *x;
+ struct nlattr *nest;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
@@ -628,18 +640,19 @@ 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 rtattr *)skb_tail_pointer(skb);
- RTA_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 rtattr_failure;
+ goto nla_put_failure;
- x->rta_len = skb_tail_pointer(skb) - (u8 *)x;
+ nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
nlmsg_trim(skb, b);
return -1;
@@ -658,48 +671,51 @@ act_get_notify(u32 pid, struct nlmsghdr *n, struct tc_action *a, int event)
return -EINVAL;
}
- return rtnl_unicast(skb, pid);
+ return rtnl_unicast(skb, &init_net, pid);
}
static struct tc_action *
-tcf_action_get_1(struct rtattr *rta, struct nlmsghdr *n, u32 pid, int *err)
+tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
{
- struct rtattr *tb[TCA_ACT_MAX+1];
+ struct nlattr *tb[TCA_ACT_MAX+1];
struct tc_action *a;
int index;
+ int err;
- *err = -EINVAL;
- if (rtattr_parse_nested(tb, TCA_ACT_MAX, rta) < 0)
- return NULL;
+ err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+ if (err < 0)
+ goto err_out;
- if (tb[TCA_ACT_INDEX - 1] == NULL ||
- RTA_PAYLOAD(tb[TCA_ACT_INDEX - 1]) < sizeof(index))
- return NULL;
- index = *(int *)RTA_DATA(tb[TCA_ACT_INDEX - 1]);
+ err = -EINVAL;
+ if (tb[TCA_ACT_INDEX] == NULL ||
+ nla_len(tb[TCA_ACT_INDEX]) < sizeof(index))
+ goto err_out;
+ index = nla_get_u32(tb[TCA_ACT_INDEX]);
- *err = -ENOMEM;
+ err = -ENOMEM;
a = kzalloc(sizeof(struct tc_action), GFP_KERNEL);
if (a == NULL)
- return NULL;
+ goto err_out;
- *err = -EINVAL;
- a->ops = tc_lookup_action(tb[TCA_ACT_KIND - 1]);
+ err = -EINVAL;
+ a->ops = tc_lookup_action(tb[TCA_ACT_KIND]);
if (a->ops == NULL)
goto err_free;
if (a->ops->lookup == NULL)
goto err_mod;
- *err = -ENOENT;
+ err = -ENOENT;
if (a->ops->lookup(a, index) == 0)
goto err_mod;
module_put(a->ops->owner);
- *err = 0;
return a;
+
err_mod:
module_put(a->ops->owner);
err_free:
kfree(a);
- return NULL;
+err_out:
+ return ERR_PTR(err);
}
static void cleanup_a(struct tc_action *act)
@@ -725,16 +741,16 @@ static struct tc_action *create_a(int i)
return act;
}
-static int tca_action_flush(struct rtattr *rta, struct nlmsghdr *n, u32 pid)
+static int tca_action_flush(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
{
struct sk_buff *skb;
unsigned char *b;
struct nlmsghdr *nlh;
struct tcamsg *t;
struct netlink_callback dcb;
- struct rtattr *x;
- struct rtattr *tb[TCA_ACT_MAX+1];
- struct rtattr *kind;
+ struct nlattr *nest;
+ struct nlattr *tb[TCA_ACT_MAX+1];
+ struct nlattr *kind;
struct tc_action *a = create_a(0);
int err = -EINVAL;
@@ -752,10 +768,12 @@ static int tca_action_flush(struct rtattr *rta, struct nlmsghdr *n, u32 pid)
b = skb_tail_pointer(skb);
- if (rtattr_parse_nested(tb, TCA_ACT_MAX, rta) < 0)
+ err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+ if (err < 0)
goto err_out;
- kind = tb[TCA_ACT_KIND-1];
+ err = -EINVAL;
+ kind = tb[TCA_ACT_KIND];
a->ops = tc_lookup_action(kind);
if (a->ops == NULL)
goto err_out;
@@ -766,26 +784,27 @@ static int tca_action_flush(struct rtattr *rta, struct nlmsghdr *n, u32 pid)
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr *)skb_tail_pointer(skb);
- RTA_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 rtattr_failure;
+ goto nla_put_failure;
- x->rta_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;
module_put(a->ops->owner);
kfree(a);
- err = rtnetlink_send(skb, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
+ err = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
if (err > 0)
return 0;
return err;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
module_put(a->ops->owner);
err_out:
@@ -795,25 +814,28 @@ err_out:
}
static int
-tca_action_gd(struct rtattr *rta, struct nlmsghdr *n, u32 pid, int event)
+tca_action_gd(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int event)
{
- int i, ret = 0;
- struct rtattr *tb[TCA_ACT_MAX_PRIO+1];
+ int i, ret;
+ struct nlattr *tb[TCA_ACT_MAX_PRIO+1];
struct tc_action *head = NULL, *act, *act_prev = NULL;
- if (rtattr_parse_nested(tb, TCA_ACT_MAX_PRIO, rta) < 0)
- return -EINVAL;
+ ret = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL);
+ if (ret < 0)
+ return ret;
if (event == RTM_DELACTION && n->nlmsg_flags&NLM_F_ROOT) {
if (tb[0] != NULL && tb[1] == NULL)
return tca_action_flush(tb[0], n, pid);
}
- for (i=0; i < TCA_ACT_MAX_PRIO && tb[i]; i++) {
- act = tcf_action_get_1(tb[i], n, pid, &ret);
- if (act == NULL)
+ for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
+ act = tcf_action_get_1(tb[i], n, pid);
+ if (IS_ERR(act)) {
+ ret = PTR_ERR(act);
goto err;
- act->order = i+1;
+ }
+ act->order = i;
if (head == NULL)
head = act;
@@ -842,7 +864,7 @@ tca_action_gd(struct rtattr *rta, struct nlmsghdr *n, u32 pid, int event)
/* now do the delete */
tcf_action_destroy(head, 0);
- ret = rtnetlink_send(skb, pid, RTNLGRP_TC,
+ ret = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC,
n->nlmsg_flags&NLM_F_ECHO);
if (ret > 0)
return 0;
@@ -859,7 +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 rtattr *x;
+ struct nlattr *nest;
unsigned char *b;
int err = 0;
@@ -875,23 +897,24 @@ 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 rtattr *)skb_tail_pointer(skb);
- RTA_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 rtattr_failure;
+ goto nla_put_failure;
- x->rta_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;
- err = rtnetlink_send(skb, pid, RTNLGRP_TC, flags&NLM_F_ECHO);
+ err = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, flags&NLM_F_ECHO);
if (err > 0)
err = 0;
return err;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
kfree_skb(skb);
return -1;
@@ -899,16 +922,20 @@ nlmsg_failure:
static int
-tcf_action_add(struct rtattr *rta, struct nlmsghdr *n, u32 pid, int ovr)
+tcf_action_add(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int ovr)
{
int ret = 0;
struct tc_action *act;
struct tc_action *a;
u32 seq = n->nlmsg_seq;
- act = tcf_action_init(rta, NULL, NULL, ovr, 0, &ret);
+ act = tcf_action_init(nla, NULL, NULL, ovr, 0);
if (act == NULL)
goto done;
+ if (IS_ERR(act)) {
+ ret = PTR_ERR(act);
+ goto done;
+ }
/* dump then free all the actions after update; inserted policy
* stays intact
@@ -924,11 +951,19 @@ done:
static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
{
- struct rtattr **tca = arg;
+ struct net *net = skb->sk->sk_net;
+ struct nlattr *tca[TCA_ACT_MAX + 1];
u32 pid = skb ? NETLINK_CB(skb).pid : 0;
int ret = 0, ovr = 0;
- if (tca[TCA_ACT_TAB-1] == NULL) {
+ if (net != &init_net)
+ return -EINVAL;
+
+ ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
+ if (ret < 0)
+ return ret;
+
+ if (tca[TCA_ACT_TAB] == NULL) {
printk("tc_ctl_action: received NO action attribs\n");
return -EINVAL;
}
@@ -946,15 +981,15 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
if (n->nlmsg_flags&NLM_F_REPLACE)
ovr = 1;
replay:
- ret = tcf_action_add(tca[TCA_ACT_TAB-1], n, pid, ovr);
+ ret = tcf_action_add(tca[TCA_ACT_TAB], n, pid, ovr);
if (ret == -EAGAIN)
goto replay;
break;
case RTM_DELACTION:
- ret = tca_action_gd(tca[TCA_ACT_TAB-1], n, pid, RTM_DELACTION);
+ ret = tca_action_gd(tca[TCA_ACT_TAB], n, pid, RTM_DELACTION);
break;
case RTM_GETACTION:
- ret = tca_action_gd(tca[TCA_ACT_TAB-1], n, pid, RTM_GETACTION);
+ ret = tca_action_gd(tca[TCA_ACT_TAB], n, pid, RTM_GETACTION);
break;
default:
BUG();
@@ -963,33 +998,30 @@ replay:
return ret;
}
-static struct rtattr *
+static struct nlattr *
find_dump_kind(struct nlmsghdr *n)
{
- struct rtattr *tb1, *tb2[TCA_ACT_MAX+1];
- struct rtattr *tb[TCA_ACT_MAX_PRIO + 1];
- struct rtattr *rta[TCAA_MAX + 1];
- struct rtattr *kind;
- int min_len = NLMSG_LENGTH(sizeof(struct tcamsg));
- int attrlen = n->nlmsg_len - NLMSG_ALIGN(min_len);
- struct rtattr *attr = (void *) n + NLMSG_ALIGN(min_len);
-
- if (rtattr_parse(rta, TCAA_MAX, attr, attrlen) < 0)
+ struct nlattr *tb1, *tb2[TCA_ACT_MAX+1];
+ struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
+ struct nlattr *nla[TCAA_MAX + 1];
+ struct nlattr *kind;
+
+ if (nlmsg_parse(n, sizeof(struct tcamsg), nla, TCAA_MAX, NULL) < 0)
return NULL;
- tb1 = rta[TCA_ACT_TAB - 1];
+ tb1 = nla[TCA_ACT_TAB];
if (tb1 == NULL)
return NULL;
- if (rtattr_parse(tb, TCA_ACT_MAX_PRIO, RTA_DATA(tb1),
- NLMSG_ALIGN(RTA_PAYLOAD(tb1))) < 0)
- return NULL;
- if (tb[0] == NULL)
+ if (nla_parse(tb, TCA_ACT_MAX_PRIO, nla_data(tb1),
+ NLMSG_ALIGN(nla_len(tb1)), NULL) < 0)
return NULL;
- if (rtattr_parse(tb2, TCA_ACT_MAX, RTA_DATA(tb[0]),
- RTA_PAYLOAD(tb[0])) < 0)
+ if (tb[1] == NULL)
return NULL;
- kind = tb2[TCA_ACT_KIND-1];
+ if (nla_parse(tb2, TCA_ACT_MAX, nla_data(tb[1]),
+ nla_len(tb[1]), NULL) < 0)
+ return NULL;
+ kind = tb2[TCA_ACT_KIND];
return kind;
}
@@ -997,14 +1029,18 @@ find_dump_kind(struct nlmsghdr *n)
static int
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 rtattr *x;
+ struct nlattr *nest;
struct tc_action_ops *a_o;
struct tc_action a;
int ret = 0;
struct tcamsg *t = (struct tcamsg *) NLMSG_DATA(cb->nlh);
- struct rtattr *kind = find_dump_kind(cb->nlh);
+ struct nlattr *kind = find_dump_kind(cb->nlh);
+
+ if (net != &init_net)
+ return 0;
if (kind == NULL) {
printk("tc_dump_action: action bad kind\n");
@@ -1021,7 +1057,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
if (a_o->walk == NULL) {
printk("tc_dump_action: %s !capable of dumping table\n", a_o->kind);
- goto rtattr_failure;
+ goto nla_put_failure;
}
nlh = NLMSG_PUT(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
@@ -1031,18 +1067,19 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr *)skb_tail_pointer(skb);
- RTA_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 rtattr_failure;
+ goto nla_put_failure;
if (ret > 0) {
- x->rta_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)
@@ -1050,7 +1087,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
module_put(a_o->owner);
return skb->len;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
module_put(a_o->owner);
nlmsg_trim(skb, b);
@@ -1067,8 +1104,3 @@ static int __init tc_action_init(void)
}
subsys_initcall(tc_action_init);
-
-EXPORT_SYMBOL(tcf_register_action);
-EXPORT_SYMBOL(tcf_unregister_action);
-EXPORT_SYMBOL(tcf_action_exec);
-EXPORT_SYMBOL(tcf_action_dump_1);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-25 23:51:56 +0000