struct tc_u_common
{
- struct tc_u_common *next;
struct tc_u_hnode *hlist;
struct Qdisc *q;
int refcnt;
u32 hgenerator;
};
-static struct tcf_ext_map u32_ext_map = {
+static const struct tcf_ext_map u32_ext_map = {
.action = TCA_U32_ACT,
.police = TCA_U32_POLICE
};
-static struct tc_u_common *u32_list;
-
-static __inline__ unsigned u32_hash_fold(u32 key, struct tc_u32_sel *sel, u8 fshift)
+static __inline__ unsigned u32_hash_fold(__be32 key, struct tc_u32_sel *sel, u8 fshift)
{
- unsigned h = (key & sel->hmask)>>fshift;
+ unsigned h = ntohl(key & sel->hmask)>>fshift;
return h;
}
for (i = n->sel.nkeys; i>0; i--, key++) {
- if ((*(u32*)(ptr+key->off+(off2&key->offmask))^key->val)&key->mask) {
+ if ((*(__be32*)(ptr+key->off+(off2&key->offmask))^key->val)&key->mask) {
n = n->next;
goto next_knode;
}
ht = n->ht_down;
sel = 0;
if (ht->divisor)
- sel = ht->divisor&u32_hash_fold(*(u32*)(ptr+n->sel.hoff), &n->sel,n->fshift);
+ sel = ht->divisor&u32_hash_fold(*(__be32*)(ptr+n->sel.hoff), &n->sel,n->fshift);
if (!(n->sel.flags&(TC_U32_VAROFFSET|TC_U32_OFFSET|TC_U32_EAT)))
goto next_ht;
if (n->sel.flags&(TC_U32_OFFSET|TC_U32_VAROFFSET)) {
off2 = n->sel.off + 3;
if (n->sel.flags&TC_U32_VAROFFSET)
- off2 += ntohs(n->sel.offmask & *(u16*)(ptr+n->sel.offoff)) >>n->sel.offshift;
+ off2 += ntohs(n->sel.offmask & *(__be16*)(ptr+n->sel.offoff)) >>n->sel.offshift;
off2 &= ~3;
}
if (n->sel.flags&TC_U32_EAT) {
struct tc_u_hnode *root_ht;
struct tc_u_common *tp_c;
- for (tp_c = u32_list; tp_c; tp_c = tp_c->next)
- if (tp_c->q == tp->q)
- break;
+ tp_c = tp->q->u32_node;
root_ht = kzalloc(sizeof(*root_ht), GFP_KERNEL);
if (root_ht == NULL)
return -ENOBUFS;
}
tp_c->q = tp->q;
- tp_c->next = u32_list;
- u32_list = tp_c;
+ tp->q->u32_node = tp_c;
}
tp_c->refcnt++;
}
}
}
- BUG_TRAP(0);
+ WARN_ON(1);
return 0;
}
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode **hn;
- BUG_TRAP(!ht->refcnt);
+ WARN_ON(ht->refcnt);
u32_clear_hnode(tp, ht);
}
}
- BUG_TRAP(0);
+ WARN_ON(1);
return -ENOENT;
}
static void u32_destroy(struct tcf_proto *tp)
{
struct tc_u_common *tp_c = tp->data;
- struct tc_u_hnode *root_ht = xchg(&tp->root, NULL);
+ struct tc_u_hnode *root_ht = tp->root;
- BUG_TRAP(root_ht != NULL);
+ WARN_ON(root_ht == NULL);
if (root_ht && --root_ht->refcnt == 0)
u32_destroy_hnode(tp, root_ht);
if (--tp_c->refcnt == 0) {
struct tc_u_hnode *ht;
- struct tc_u_common **tp_cp;
- for (tp_cp = &u32_list; *tp_cp; tp_cp = &(*tp_cp)->next) {
- if (*tp_cp == tp_c) {
- *tp_cp = tp_c->next;
- break;
- }
- }
+ tp->q->u32_node = NULL;
- for (ht=tp_c->hlist; ht; ht = ht->next)
+ for (ht = tp_c->hlist; ht; ht = ht->next) {
+ ht->refcnt--;
u32_clear_hnode(tp, ht);
+ }
while ((ht = tp_c->hlist) != NULL) {
tp_c->hlist = ht->next;
- BUG_TRAP(ht->refcnt == 0);
+ WARN_ON(ht->refcnt != 0);
kfree(ht);
}
if (tp->root == ht)
return -EINVAL;
- if (--ht->refcnt == 0)
+ if (ht->refcnt == 1) {
+ ht->refcnt--;
u32_destroy_hnode(tp, ht);
+ } else {
+ return -EBUSY;
+ }
return 0;
}
return handle|(i>0xFFF ? 0xFFF : i);
}
+static const struct nla_policy u32_policy[TCA_U32_MAX + 1] = {
+ [TCA_U32_CLASSID] = { .type = NLA_U32 },
+ [TCA_U32_HASH] = { .type = NLA_U32 },
+ [TCA_U32_LINK] = { .type = NLA_U32 },
+ [TCA_U32_DIVISOR] = { .type = NLA_U32 },
+ [TCA_U32_SEL] = { .len = sizeof(struct tc_u32_sel) },
+ [TCA_U32_INDEV] = { .type = NLA_STRING, .len = IFNAMSIZ },
+ [TCA_U32_MARK] = { .len = sizeof(struct tc_u32_mark) },
+};
+
static int u32_set_parms(struct tcf_proto *tp, unsigned long base,
struct tc_u_hnode *ht,
- struct tc_u_knode *n, struct rtattr **tb,
- struct rtattr *est)
+ struct tc_u_knode *n, struct nlattr **tb,
+ struct nlattr *est)
{
int err;
struct tcf_exts e;
return err;
err = -EINVAL;
- if (tb[TCA_U32_LINK-1]) {
- u32 handle = *(u32*)RTA_DATA(tb[TCA_U32_LINK-1]);
- struct tc_u_hnode *ht_down = NULL;
+ if (tb[TCA_U32_LINK]) {
+ u32 handle = nla_get_u32(tb[TCA_U32_LINK]);
+ struct tc_u_hnode *ht_down = NULL, *ht_old;
if (TC_U32_KEY(handle))
goto errout;
}
tcf_tree_lock(tp);
- ht_down = xchg(&n->ht_down, ht_down);
+ ht_old = n->ht_down;
+ n->ht_down = ht_down;
tcf_tree_unlock(tp);
- if (ht_down)
- ht_down->refcnt--;
+ if (ht_old)
+ ht_old->refcnt--;
}
- if (tb[TCA_U32_CLASSID-1]) {
- n->res.classid = *(u32*)RTA_DATA(tb[TCA_U32_CLASSID-1]);
+ if (tb[TCA_U32_CLASSID]) {
+ n->res.classid = nla_get_u32(tb[TCA_U32_CLASSID]);
tcf_bind_filter(tp, &n->res, base);
}
#ifdef CONFIG_NET_CLS_IND
- if (tb[TCA_U32_INDEV-1]) {
- int err = tcf_change_indev(tp, n->indev, tb[TCA_U32_INDEV-1]);
+ if (tb[TCA_U32_INDEV]) {
+ err = tcf_change_indev(tp, n->indev, tb[TCA_U32_INDEV]);
if (err < 0)
goto errout;
}
}
static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
- struct rtattr **tca,
+ struct nlattr **tca,
unsigned long *arg)
{
struct tc_u_common *tp_c = tp->data;
struct tc_u_hnode *ht;
struct tc_u_knode *n;
struct tc_u32_sel *s;
- struct rtattr *opt = tca[TCA_OPTIONS-1];
- struct rtattr *tb[TCA_U32_MAX];
+ struct nlattr *opt = tca[TCA_OPTIONS];
+ struct nlattr *tb[TCA_U32_MAX + 1];
u32 htid;
int err;
if (opt == NULL)
return handle ? -EINVAL : 0;
- if (rtattr_parse_nested(tb, TCA_U32_MAX, opt) < 0)
- return -EINVAL;
+ err = nla_parse_nested(tb, TCA_U32_MAX, opt, u32_policy);
+ if (err < 0)
+ return err;
if ((n = (struct tc_u_knode*)*arg) != NULL) {
if (TC_U32_KEY(n->handle) == 0)
return -EINVAL;
- return u32_set_parms(tp, base, n->ht_up, n, tb, tca[TCA_RATE-1]);
+ return u32_set_parms(tp, base, n->ht_up, n, tb, tca[TCA_RATE]);
}
- if (tb[TCA_U32_DIVISOR-1]) {
- unsigned divisor = *(unsigned*)RTA_DATA(tb[TCA_U32_DIVISOR-1]);
+ if (tb[TCA_U32_DIVISOR]) {
+ unsigned divisor = nla_get_u32(tb[TCA_U32_DIVISOR]);
if (--divisor > 0x100)
return -EINVAL;
if (ht == NULL)
return -ENOBUFS;
ht->tp_c = tp_c;
- ht->refcnt = 0;
+ ht->refcnt = 1;
ht->divisor = divisor;
ht->handle = handle;
ht->prio = tp->prio;
return 0;
}
- if (tb[TCA_U32_HASH-1]) {
- htid = *(unsigned*)RTA_DATA(tb[TCA_U32_HASH-1]);
+ if (tb[TCA_U32_HASH]) {
+ htid = nla_get_u32(tb[TCA_U32_HASH]);
if (TC_U32_HTID(htid) == TC_U32_ROOT) {
ht = tp->root;
htid = ht->handle;
} else
handle = gen_new_kid(ht, htid);
- if (tb[TCA_U32_SEL-1] == 0 ||
- RTA_PAYLOAD(tb[TCA_U32_SEL-1]) < sizeof(struct tc_u32_sel))
+ if (tb[TCA_U32_SEL] == NULL)
return -EINVAL;
- s = RTA_DATA(tb[TCA_U32_SEL-1]);
+ s = nla_data(tb[TCA_U32_SEL]);
n = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key), GFP_KERNEL);
if (n == NULL)
memcpy(&n->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key));
n->ht_up = ht;
n->handle = handle;
-{
- u8 i = 0;
- u32 mask = s->hmask;
- if (mask) {
- while (!(mask & 1)) {
- i++;
- mask>>=1;
- }
- }
- n->fshift = i;
-}
+ n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0;
#ifdef CONFIG_CLS_U32_MARK
- if (tb[TCA_U32_MARK-1]) {
+ if (tb[TCA_U32_MARK]) {
struct tc_u32_mark *mark;
- if (RTA_PAYLOAD(tb[TCA_U32_MARK-1]) < sizeof(struct tc_u32_mark)) {
-#ifdef CONFIG_CLS_U32_PERF
- kfree(n->pf);
-#endif
- kfree(n);
- return -EINVAL;
- }
- mark = RTA_DATA(tb[TCA_U32_MARK-1]);
+ mark = nla_data(tb[TCA_U32_MARK]);
memcpy(&n->mark, mark, sizeof(struct tc_u32_mark));
n->mark.success = 0;
}
#endif
- err = u32_set_parms(tp, base, ht, n, tb, tca[TCA_RATE-1]);
+ err = u32_set_parms(tp, base, ht, n, tb, tca[TCA_RATE]);
if (err == 0) {
struct tc_u_knode **ins;
for (ins = &ht->ht[TC_U32_HASH(handle)]; *ins; ins = &(*ins)->next)
break;
n->next = *ins;
- wmb();
+ tcf_tree_lock(tp);
*ins = n;
+ tcf_tree_unlock(tp);
*arg = (unsigned long)n;
return 0;
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 rtattr *rta;
+ struct nlattr *nest;
if (n == NULL)
return skb->len;
t->tcm_handle = n->handle;
- rta = (struct rtattr*)b;
- RTA_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;
u32 divisor = ht->divisor+1;
- RTA_PUT(skb, TCA_U32_DIVISOR, 4, &divisor);
+ NLA_PUT_U32(skb, TCA_U32_DIVISOR, divisor);
} else {
- RTA_PUT(skb, TCA_U32_SEL,
+ NLA_PUT(skb, TCA_U32_SEL,
sizeof(n->sel) + n->sel.nkeys*sizeof(struct tc_u32_key),
&n->sel);
if (n->ht_up) {
u32 htid = n->handle & 0xFFFFF000;
- RTA_PUT(skb, TCA_U32_HASH, 4, &htid);
+ NLA_PUT_U32(skb, TCA_U32_HASH, htid);
}
if (n->res.classid)
- RTA_PUT(skb, TCA_U32_CLASSID, 4, &n->res.classid);
+ NLA_PUT_U32(skb, TCA_U32_CLASSID, n->res.classid);
if (n->ht_down)
- RTA_PUT(skb, TCA_U32_LINK, 4, &n->ht_down->handle);
+ NLA_PUT_U32(skb, TCA_U32_LINK, n->ht_down->handle);
#ifdef CONFIG_CLS_U32_MARK
if (n->mark.val || n->mark.mask)
- RTA_PUT(skb, TCA_U32_MARK, sizeof(n->mark), &n->mark);
+ NLA_PUT(skb, TCA_U32_MARK, sizeof(n->mark), &n->mark);
#endif
if (tcf_exts_dump(skb, &n->exts, &u32_ext_map) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
#ifdef CONFIG_NET_CLS_IND
if(strlen(n->indev))
- RTA_PUT(skb, TCA_U32_INDEV, IFNAMSIZ, n->indev);
+ NLA_PUT_STRING(skb, TCA_U32_INDEV, n->indev);
#endif
#ifdef CONFIG_CLS_U32_PERF
- RTA_PUT(skb, TCA_U32_PCNT,
+ NLA_PUT(skb, TCA_U32_PCNT,
sizeof(struct tc_u32_pcnt) + n->sel.nkeys*sizeof(u64),
n->pf);
#endif
}
- rta->rta_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 rtattr_failure;
+ goto nla_put_failure;
return skb->len;
-rtattr_failure:
- nlmsg_trim(skb, b);
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
return -1;
}
-static struct tcf_proto_ops cls_u32_ops = {
- .next = NULL,
+static struct tcf_proto_ops cls_u32_ops __read_mostly = {
.kind = "u32",
.classify = u32_classify,
.init = u32_init,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff