*
*/
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <linux/bitops.h>
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/in.h>
#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
#include <linux/skbuff.h>
-#include <linux/rtnetlink.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>
-#if 1 /* control */
-#define DPRINTK(format, args...) printk(KERN_DEBUG format, ##args)
-#else
-#define DPRINTK(format, args...)
-#endif
-#if 0 /* data */
-#define D2PRINTK(format, args...) printk(KERN_DEBUG format, ##args)
-#else
-#define D2PRINTK(format, args...)
-#endif
+void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo)
+{
+ unsigned int h = tcf_hash(p->tcfc_index, hinfo->hmask);
+ struct tcf_common **p1p;
+
+ for (p1p = &hinfo->htab[h]; *p1p; p1p = &(*p1p)->tcfc_next) {
+ if (*p1p == p) {
+ write_lock_bh(hinfo->lock);
+ *p1p = p->tcfc_next;
+ write_unlock_bh(hinfo->lock);
+ gen_kill_estimator(&p->tcfc_bstats,
+ &p->tcfc_rate_est);
+ kfree(p);
+ return;
+ }
+ }
+ WARN_ON(1);
+}
+EXPORT_SYMBOL(tcf_hash_destroy);
+
+int tcf_hash_release(struct tcf_common *p, int bind,
+ struct tcf_hashinfo *hinfo)
+{
+ int ret = 0;
+
+ if (p) {
+ if (bind)
+ p->tcfc_bindcnt--;
+
+ p->tcfc_refcnt--;
+ if (p->tcfc_bindcnt <= 0 && p->tcfc_refcnt <= 0) {
+ tcf_hash_destroy(p, hinfo);
+ ret = 1;
+ }
+ }
+ return ret;
+}
+EXPORT_SYMBOL(tcf_hash_release);
+
+static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
+ struct tc_action *a, struct tcf_hashinfo *hinfo)
+{
+ struct tcf_common *p;
+ int err = 0, index = -1,i = 0, s_i = 0, n_i = 0;
+ struct nlattr *nest;
+
+ read_lock_bh(hinfo->lock);
+
+ s_i = cb->args[0];
+
+ for (i = 0; i < (hinfo->hmask + 1); i++) {
+ p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
+
+ for (; p; p = p->tcfc_next) {
+ index++;
+ if (index < s_i)
+ continue;
+ a->priv = p;
+ a->order = n_i;
+
+ 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, nest);
+ goto done;
+ }
+ nla_nest_end(skb, nest);
+ n_i++;
+ if (n_i >= TCA_ACT_MAX_PRIO)
+ goto done;
+ }
+ }
+done:
+ read_unlock_bh(hinfo->lock);
+ if (n_i)
+ cb->args[0] += n_i;
+ return n_i;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ goto done;
+}
+
+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 *nest;
+ int i= 0, n_i = 0;
+
+ 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)];
+
+ while (p != NULL) {
+ s_p = p->tcfc_next;
+ if (ACT_P_DELETED == tcf_hash_release(p, 0, hinfo))
+ module_put(a->ops->owner);
+ n_i++;
+ p = s_p;
+ }
+ }
+ NLA_PUT_U32(skb, TCA_FCNT, n_i);
+ nla_nest_end(skb, nest);
+
+ return n_i;
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -EINVAL;
+}
+
+int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
+ int type, struct tc_action *a)
+{
+ struct tcf_hashinfo *hinfo = a->ops->hinfo;
+
+ if (type == RTM_DELACTION) {
+ return tcf_del_walker(skb, a, hinfo);
+ } else if (type == RTM_GETACTION) {
+ return tcf_dump_walker(skb, cb, a, hinfo);
+ } else {
+ printk("tcf_generic_walker: unknown action %d\n", type);
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL(tcf_generic_walker);
+
+struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo)
+{
+ struct tcf_common *p;
+
+ read_lock_bh(hinfo->lock);
+ for (p = hinfo->htab[tcf_hash(index, hinfo->hmask)]; p;
+ p = p->tcfc_next) {
+ if (p->tcfc_index == index)
+ break;
+ }
+ read_unlock_bh(hinfo->lock);
+
+ return p;
+}
+EXPORT_SYMBOL(tcf_hash_lookup);
+
+u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo)
+{
+ u32 val = *idx_gen;
+
+ do {
+ if (++val == 0)
+ val = 1;
+ } while (tcf_hash_lookup(val, hinfo));
+
+ return (*idx_gen = val);
+}
+EXPORT_SYMBOL(tcf_hash_new_index);
+
+int tcf_hash_search(struct tc_action *a, u32 index)
+{
+ struct tcf_hashinfo *hinfo = a->ops->hinfo;
+ struct tcf_common *p = tcf_hash_lookup(index, hinfo);
+
+ if (p) {
+ a->priv = p;
+ return 1;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(tcf_hash_search);
+
+struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind,
+ struct tcf_hashinfo *hinfo)
+{
+ struct tcf_common *p = NULL;
+ if (index && (p = tcf_hash_lookup(index, hinfo)) != NULL) {
+ if (bind)
+ p->tcfc_bindcnt++;
+ p->tcfc_refcnt++;
+ a->priv = p;
+ }
+ return p;
+}
+EXPORT_SYMBOL(tcf_hash_check);
+
+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);
+
+ if (unlikely(!p))
+ return ERR_PTR(-ENOMEM);
+ p->tcfc_refcnt = 1;
+ if (bind)
+ p->tcfc_bindcnt = 1;
+
+ spin_lock_init(&p->tcfc_lock);
+ p->tcfc_index = index ? index : tcf_hash_new_index(idx_gen, hinfo);
+ p->tcfc_tm.install = jiffies;
+ p->tcfc_tm.lastuse = jiffies;
+ if (est) {
+ int err = gen_new_estimator(&p->tcfc_bstats, &p->tcfc_rate_est,
+ &p->tcfc_lock, est);
+ if (err) {
+ kfree(p);
+ return ERR_PTR(err);
+ }
+ }
+
+ a->priv = (void *) p;
+ return p;
+}
+EXPORT_SYMBOL(tcf_hash_create);
+
+void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo)
+{
+ unsigned int h = tcf_hash(p->tcfc_index, hinfo->hmask);
+
+ write_lock_bh(hinfo->lock);
+ p->tcfc_next = hinfo->htab[h];
+ hinfo->htab[h] = p;
+ write_unlock_bh(hinfo->lock);
+}
+EXPORT_SYMBOL(tcf_hash_insert);
static struct tc_action_ops *act_base = NULL;
static DEFINE_RWLOCK(act_mod_lock);
write_unlock(&act_mod_lock);
return 0;
}
+EXPORT_SYMBOL(tcf_register_action);
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)
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;
#endif
int tcf_action_exec(struct sk_buff *skb, struct tc_action *act,
- struct tcf_result *res)
+ struct tcf_result *res)
{
struct tc_action *a;
int ret = -1;
if (skb->tc_verd & TC_NCLS) {
skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
- D2PRINTK("(%p)tcf_action_exec: cleared TC_NCLS in %s out %s\n",
- skb, skb->input_dev ? skb->input_dev->name : "xxx",
- skb->dev->name);
ret = TC_ACT_OK;
goto exec_done;
}
while ((a = act) != NULL) {
repeat:
if (a->ops && a->ops->act) {
- ret = a->ops->act(&skb, a);
+ ret = a->ops->act(skb, a, res);
if (TC_MUNGED & skb->tc_verd) {
/* copied already, allow trampling */
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
act = a->next;
}
exec_done:
- if (skb->tc_classid > 0) {
- res->classid = skb->tc_classid;
- res->class = 0;
- skb->tc_classid = 0;
- }
return ret;
}
+EXPORT_SYMBOL(tcf_action_exec);
void tcf_action_destroy(struct tc_action *act, int bind)
{
for (a = act; a; a = act) {
if (a->ops && a->ops->cleanup) {
- DPRINTK("tcf_action_destroy destroying %p next %p\n",
- a, a->next);
if (a->ops->cleanup(a, bind) == ACT_P_DELETED)
module_put(a->ops->owner);
act = act->next;
tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
int err = -EINVAL;
- unsigned char *b = skb->tail;
- struct rtattr *r;
+ unsigned char *b = skb_tail_pointer(skb);
+ 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;
- 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 - (u8*)r;
+ nla_nest_end(skb, nest);
return err;
}
-rtattr_failure:
- skb_trim(skb, b - skb->data);
+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;
- struct rtattr *r ;
+ struct nlattr *nest;
while ((a = act) != NULL) {
- r = (struct rtattr*) skb->tail;
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 rtattr_failure;
- r->rta_len = skb->tail - (u8*)r;
+ goto errout;
+ nla_nest_end(skb, nest);
}
return 0;
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -err;
+nla_put_failure:
+ err = -EINVAL;
+errout:
+ 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;
}
a_o = tc_lookup_action_n(act_name);
if (a_o == NULL) {
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
rtnl_unlock();
- request_module(act_name);
+ request_module("act_%s", act_name);
rtnl_lock();
a_o = tc_lookup_action_n(act_name);
* indicate this using -EAGAIN.
*/
if (a_o != NULL) {
- *err = -EAGAIN;
+ err = -EAGAIN;
goto err_mod;
}
#endif
+ err = -ENOENT;
goto err_out;
}
- *err = -ENOMEM;
- a = kmalloc(sizeof(*a), GFP_KERNEL);
+ err = -ENOMEM;
+ a = kzalloc(sizeof(*a), GFP_KERNEL);
if (a == NULL)
goto err_mod;
- memset(a, 0, sizeof(*a));
/* 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;
- DPRINTK("tcf_action_init_1: successfull %s\n", act_name);
- *err = 0;
return a;
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;
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,
int err = 0;
struct gnet_dump d;
struct tcf_act_hdr *h = a->priv;
-
+
if (h == NULL)
goto errout;
/* compat_mode being true specifies a call that is supposed
- * to add additional backward compatiblity statistic TLVs.
+ * to add additional backward compatibility statistic TLVs.
*/
if (compat_mode) {
if (a->type == TCA_OLD_COMPAT)
err = gnet_stats_start_copy_compat(skb, 0,
- TCA_STATS, TCA_XSTATS, h->stats_lock, &d);
+ TCA_STATS, TCA_XSTATS, &h->tcf_lock, &d);
else
return 0;
} else
err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
- h->stats_lock, &d);
+ &h->tcf_lock, &d);
if (err < 0)
goto errout;
if (a->ops->get_stats(skb, a) < 0)
goto errout;
- if (gnet_stats_copy_basic(&d, &h->bstats) < 0 ||
-#ifdef CONFIG_NET_ESTIMATOR
- gnet_stats_copy_rate_est(&d, &h->rate_est) < 0 ||
-#endif
- gnet_stats_copy_queue(&d, &h->qstats) < 0)
+ if (gnet_stats_copy_basic(&d, &h->tcf_bstats) < 0 ||
+ gnet_stats_copy_rate_est(&d, &h->tcf_bstats,
+ &h->tcf_rate_est) < 0 ||
+ gnet_stats_copy_queue(&d, &h->tcf_qstats) < 0)
goto errout;
if (gnet_stats_finish_copy(&d) < 0)
static int
tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
- u16 flags, int event, int bind, int ref)
+ u16 flags, int event, int bind, int ref)
{
struct tcamsg *t;
struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
- struct rtattr *x;
+ unsigned char *b = skb_tail_pointer(skb);
+ struct nlattr *nest;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
-
- x = (struct rtattr*) skb->tail;
- 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 - (u8*)x;
-
- nlh->nlmsg_len = skb->tail - b;
+ nla_nest_end(skb, nest);
+
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
- skb_trim(skb, b - skb->data);
+ nlmsg_trim(skb, b);
return -1;
}
act_get_notify(u32 pid, struct nlmsghdr *n, struct tc_action *a, int event)
{
struct sk_buff *skb;
- int err = 0;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
kfree_skb(skb);
return -EINVAL;
}
- err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
- if (err > 0)
- err = 0;
- return err;
+
+ 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;
- a = kmalloc(sizeof(struct tc_action), GFP_KERNEL);
+ err = -ENOMEM;
+ a = kzalloc(sizeof(struct tc_action), GFP_KERNEL);
if (a == NULL)
- return NULL;
- memset(a, 0, sizeof(struct tc_action));
+ 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)
{
struct tc_action *act;
- act = kmalloc(sizeof(*act), GFP_KERNEL);
+ act = kzalloc(sizeof(*act), GFP_KERNEL);
if (act == NULL) {
printk("create_a: failed to alloc!\n");
return NULL;
}
- memset(act, 0, sizeof(*act));
act->order = 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;
+ int err = -ENOMEM;
if (a == NULL) {
printk("tca_action_flush: couldnt create tc_action\n");
if (!skb) {
printk("tca_action_flush: failed skb alloc\n");
kfree(a);
- return -ENOBUFS;
+ return err;
}
- b = (unsigned char *)skb->tail;
+ 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;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr *) skb->tail;
- 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;
+ if (err == 0)
+ goto noflush_out;
- x->rta_len = skb->tail - (u8 *) x;
+ nla_nest_end(skb, nest);
- nlh->nlmsg_len = skb->tail - b;
+ 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, RTMGRP_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:
- module_put(a->ops->owner);
+nla_put_failure:
nlmsg_failure:
+ module_put(a->ops->owner);
err_out:
+noflush_out:
kfree_skb(skb);
kfree(a);
return err;
}
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);
+ if (tb[1] != NULL)
+ return tca_action_flush(tb[1], n, pid);
+ else
+ return -EINVAL;
}
- 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;
}
if (tca_get_fill(skb, head, pid, n->nlmsg_seq, 0, event,
- 0, 1) <= 0) {
+ 0, 1) <= 0) {
kfree_skb(skb);
ret = -EINVAL;
goto err;
/* now do the delete */
tcf_action_destroy(head, 0);
- ret = rtnetlink_send(skb, pid, RTMGRP_TC,
- n->nlmsg_flags&NLM_F_ECHO);
+ ret = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC,
+ n->nlmsg_flags&NLM_F_ECHO);
if (ret > 0)
return 0;
return ret;
}
static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
- u16 flags)
+ u16 flags)
{
struct tcamsg *t;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- struct rtattr *x;
+ struct nlattr *nest;
unsigned char *b;
int err = 0;
if (!skb)
return -ENOBUFS;
- b = (unsigned char *)skb->tail;
+ b = skb_tail_pointer(skb);
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
t = NLMSG_DATA(nlh);
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr*) skb->tail;
- 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;
-
- x->rta_len = skb->tail - (u8*)x;
-
- nlh->nlmsg_len = skb->tail - b;
- NETLINK_CB(skb).dst_groups = RTMGRP_TC;
-
- err = rtnetlink_send(skb, pid, RTMGRP_TC, flags&NLM_F_ECHO);
+ goto nla_put_failure;
+
+ nla_nest_end(skb, nest);
+
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+ NETLINK_CB(skb).dst_group = RTNLGRP_TC;
+
+ 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:
- skb_trim(skb, b - skb->data);
+ kfree_skb(skb);
return -1;
}
-
+
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
static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
{
- struct rtattr **tca = arg;
+ struct net *net = sock_net(skb->sk);
+ 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_eq(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;
}
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();
return ret;
}
-static char *
-find_dump_kind(struct nlmsghdr *n)
+static struct nlattr *
+find_dump_kind(const 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);
+ 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 (rtattr_parse(rta, TCAA_MAX, attr, attrlen) < 0)
+ 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 (char *) RTA_DATA(kind);
+ return kind;
}
static int
tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = sock_net(skb->sk);
struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
- struct rtattr *x;
+ unsigned char *b = skb_tail_pointer(skb);
+ 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);
- char *kind = find_dump_kind(cb->nlh);
+ struct nlattr *kind = find_dump_kind(cb->nlh);
+
+ if (!net_eq(net, &init_net))
+ return 0;
if (kind == NULL) {
printk("tc_dump_action: action bad kind\n");
return 0;
}
- a_o = tc_lookup_action_n(kind);
+ a_o = tc_lookup_action(kind);
if (a_o == NULL) {
- printk("failed to find %s\n", kind);
return 0;
}
a.ops = a_o;
if (a_o->walk == NULL) {
- printk("tc_dump_action: %s !capable of dumping table\n", kind);
- goto rtattr_failure;
+ printk("tc_dump_action: %s !capable of dumping table\n", a_o->kind);
+ goto nla_put_failure;
}
nlh = NLMSG_PUT(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
- cb->nlh->nlmsg_type, sizeof(*t));
+ cb->nlh->nlmsg_type, sizeof(*t));
t = NLMSG_DATA(nlh);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr *) skb->tail;
- 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 - (u8 *) x;
+ nla_nest_end(skb, nest);
ret = skb->len;
} else
- skb_trim(skb, (u8*)x - skb->data);
+ nla_nest_cancel(skb, nest);
- nlh->nlmsg_len = skb->tail - b;
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
if (NETLINK_CB(cb->skb).pid && ret)
nlh->nlmsg_flags |= NLM_F_MULTI;
module_put(a_o->owner);
return skb->len;
-rtattr_failure:
+nla_put_failure:
nlmsg_failure:
module_put(a_o->owner);
- skb_trim(skb, b - skb->data);
+ nlmsg_trim(skb, b);
return skb->len;
}
static int __init tc_action_init(void)
{
- struct rtnetlink_link *link_p = rtnetlink_links[PF_UNSPEC];
-
- if (link_p) {
- link_p[RTM_NEWACTION-RTM_BASE].doit = tc_ctl_action;
- link_p[RTM_DELACTION-RTM_BASE].doit = tc_ctl_action;
- link_p[RTM_GETACTION-RTM_BASE].doit = tc_ctl_action;
- link_p[RTM_GETACTION-RTM_BASE].dumpit = tc_dump_action;
- }
+ rtnl_register(PF_UNSPEC, RTM_NEWACTION, tc_ctl_action, NULL);
+ rtnl_register(PF_UNSPEC, RTM_DELACTION, tc_ctl_action, NULL);
+ rtnl_register(PF_UNSPEC, RTM_GETACTION, tc_ctl_action, tc_dump_action);
- printk("TC classifier action (bugs to netdev@vger.kernel.org cc "
- "hadi@cyberus.ca)\n");
return 0;
}
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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff