#include <linux/bitops.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/interrupt.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
-#include <linux/rtnetlink.h>
#include <linux/init.h>
#include <linux/kmod.h>
#include <net/sock.h>
#include <net/sch_generic.h>
#include <net/act_api.h>
+#include <net/netlink.h>
-#if 0 /* control */
-#define DPRINTK(format, args...) printk(KERN_DEBUG format, ##args)
-#else
-#define DPRINTK(format, args...)
+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);
+#ifdef CONFIG_NET_ESTIMATOR
+ gen_kill_estimator(&p->tcfc_bstats,
+ &p->tcfc_rate_est);
#endif
-#if 0 /* data */
-#define D2PRINTK(format, args...) printk(KERN_DEBUG format, ##args)
-#else
-#define D2PRINTK(format, args...)
+ kfree(p);
+ return;
+ }
+ }
+ BUG_TRAP(0);
+}
+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 rtattr *r ;
+
+ read_lock(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;
+ r = (struct rtattr *)skb_tail_pointer(skb);
+ RTA_PUT(skb, a->order, 0, NULL);
+ err = tcf_action_dump_1(skb, a, 0, 0);
+ if (err < 0) {
+ index--;
+ nlmsg_trim(skb, r);
+ goto done;
+ }
+ r->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+ n_i++;
+ if (n_i >= TCA_ACT_MAX_PRIO)
+ goto done;
+ }
+ }
+done:
+ read_unlock(hinfo->lock);
+ if (n_i)
+ cb->args[0] += n_i;
+ return n_i;
+
+rtattr_failure:
+ nlmsg_trim(skb, r);
+ 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 rtattr *r ;
+ 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);
+ 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;
+ }
+ }
+ RTA_PUT(skb, TCA_FCNT, 4, &n_i);
+ r->rta_len = skb_tail_pointer(skb) - (u8 *)r;
+
+ return n_i;
+rtattr_failure:
+ nlmsg_trim(skb, r);
+ 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(hinfo->lock);
+ for (p = hinfo->htab[tcf_hash(index, hinfo->hmask)]; p;
+ p = p->tcfc_next) {
+ if (p->tcfc_index == index)
+ break;
+ }
+ read_unlock(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 rtattr *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 p;
+ p->tcfc_refcnt = 1;
+ if (bind)
+ p->tcfc_bindcnt = 1;
+
+ spin_lock_init(&p->tcfc_lock);
+ p->tcfc_stats_lock = &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;
+#ifdef CONFIG_NET_ESTIMATOR
+ if (est)
+ gen_new_estimator(&p->tcfc_bstats, &p->tcfc_rate_est,
+ p->tcfc_stats_lock, est);
#endif
+ 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);
#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;
}
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;
+ unsigned char *b = skb_tail_pointer(skb);
struct rtattr *r;
if (a->ops == NULL || a->ops->dump == NULL)
RTA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
if (tcf_action_copy_stats(skb, a, 0))
goto rtattr_failure;
- r = (struct rtattr*) skb->tail;
+ r = (struct rtattr *)skb_tail_pointer(skb);
RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
if ((err = tcf_action_dump_old(skb, a, bind, ref)) > 0) {
- r->rta_len = skb->tail - (u8*)r;
+ r->rta_len = skb_tail_pointer(skb) - (u8 *)r;
return err;
}
rtattr_failure:
- skb_trim(skb, b - skb->data);
+ nlmsg_trim(skb, b);
return -1;
}
{
struct tc_action *a;
int err = -EINVAL;
- unsigned char *b = skb->tail;
+ unsigned char *b = skb_tail_pointer(skb);
struct rtattr *r ;
while ((a = act) != NULL) {
- r = (struct rtattr*) skb->tail;
+ r = (struct rtattr *)skb_tail_pointer(skb);
act = a->next;
RTA_PUT(skb, a->order, 0, NULL);
err = tcf_action_dump_1(skb, a, bind, ref);
if (err < 0)
goto errout;
- r->rta_len = skb->tail - (u8*)r;
+ r->rta_len = skb_tail_pointer(skb) - (u8 *)r;
}
return 0;
rtattr_failure:
err = -EINVAL;
errout:
- skb_trim(skb, b - skb->data);
+ nlmsg_trim(skb, b);
return err;
}
struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est,
- char *name, int ovr, int bind, int *err)
+ char *name, int ovr, int bind, int *err)
{
struct tc_action *a;
struct tc_action_ops *a_o;
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;
}
struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est,
- char *name, int ovr, int bind, int *err)
+ char *name, int ovr, int bind, int *err)
{
struct rtattr *tb[TCA_ACT_MAX_PRIO+1];
struct tc_action *head = NULL, *act, *act_prev = NULL;
int err = 0;
struct gnet_dump d;
struct tcf_act_hdr *h = a->priv;
-
+
if (h == NULL)
goto errout;
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_stats_lock, &d);
else
return 0;
} else
err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
- h->stats_lock, &d);
+ h->tcf_stats_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 ||
+ if (gnet_stats_copy_basic(&d, &h->tcf_bstats) < 0 ||
#ifdef CONFIG_NET_ESTIMATOR
- gnet_stats_copy_rate_est(&d, &h->rate_est) < 0 ||
+ gnet_stats_copy_rate_est(&d, &h->tcf_rate_est) < 0 ||
#endif
- gnet_stats_copy_queue(&d, &h->qstats) < 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;
+ unsigned char *b = skb_tail_pointer(skb);
struct rtattr *x;
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;
+
+ x = (struct rtattr *)skb_tail_pointer(skb);
RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
if (tcf_action_dump(skb, a, bind, ref) < 0)
goto rtattr_failure;
- x->rta_len = skb->tail - (u8*)x;
-
- nlh->nlmsg_len = skb->tail - b;
+ x->rta_len = skb_tail_pointer(skb) - (u8 *)x;
+
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
rtattr_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, pid);
}
static struct tc_action *
return -ENOBUFS;
}
- b = (unsigned char *)skb->tail;
+ b = skb_tail_pointer(skb);
if (rtattr_parse_nested(tb, TCA_ACT_MAX, rta) < 0)
goto err_out;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
- x = (struct rtattr *) skb->tail;
+ x = (struct rtattr *)skb_tail_pointer(skb);
RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
err = a->ops->walk(skb, &dcb, RTM_DELACTION, a);
if (err < 0)
goto rtattr_failure;
- x->rta_len = skb->tail - (u8 *) x;
+ x->rta_len = skb_tail_pointer(skb) - (u8 *)x;
- 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);
}
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, RTNLGRP_TC,
- n->nlmsg_flags&NLM_F_ECHO);
+ 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;
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;
+ x = (struct rtattr *)skb_tail_pointer(skb);
RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
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;
+ x->rta_len = skb_tail_pointer(skb) - (u8 *)x;
+
+ 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);
if (err > 0)
err = 0;
return -1;
}
-
+
static int
tcf_action_add(struct rtattr *rta, struct nlmsghdr *n, u32 pid, int ovr)
{
return NULL;
if (rtattr_parse(tb, TCA_ACT_MAX_PRIO, RTA_DATA(tb1),
- NLMSG_ALIGN(RTA_PAYLOAD(tb1))) < 0)
+ NLMSG_ALIGN(RTA_PAYLOAD(tb1))) < 0)
return NULL;
if (tb[0] == NULL)
return NULL;
if (rtattr_parse(tb2, TCA_ACT_MAX, RTA_DATA(tb[0]),
- RTA_PAYLOAD(tb[0])) < 0)
+ RTA_PAYLOAD(tb[0])) < 0)
return NULL;
kind = tb2[TCA_ACT_KIND-1];
tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
{
struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
+ unsigned char *b = skb_tail_pointer(skb);
struct rtattr *x;
struct tc_action_ops *a_o;
struct tc_action a;
}
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;
+ x = (struct rtattr *)skb_tail_pointer(skb);
RTA_PUT(skb, TCA_ACT_TAB, 0, NULL);
ret = a_o->walk(skb, cb, RTM_GETACTION, &a);
goto rtattr_failure;
if (ret > 0) {
- x->rta_len = skb->tail - (u8 *) x;
+ x->rta_len = skb_tail_pointer(skb) - (u8 *)x;
ret = skb->len;
} else
- skb_trim(skb, (u8*)x - skb->data);
+ nlmsg_trim(skb, x);
- 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);
rtattr_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);
return 0;
}
projects / powerpc.git / blobdiff