static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct rtattr **rta = arg;
struct in_device *in_dev;
struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
struct in_ifaddr *ifa, **ifap;
ASSERT_RTNL();
if ((in_dev = inetdev_by_index(ifm->ifa_index)) == NULL)
goto out;
__in_dev_put(in_dev);
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
if ((rta[IFA_LOCAL - 1] &&
memcmp(RTA_DATA(rta[IFA_LOCAL - 1]),
&ifa->ifa_local, 4)) ||
(rta[IFA_LABEL - 1] &&
rtattr_strcmp(rta[IFA_LABEL - 1], ifa->ifa_label)) ||
(rta[IFA_ADDRESS - 1] &&
(ifm->ifa_prefixlen != ifa->ifa_prefixlen ||
!inet_ifa_match(*(u32*)RTA_DATA(rta[IFA_ADDRESS - 1]),
ifa))))
continue;
inet_del_ifa(in_dev, ifap, 1);
return 0;
}
out:
return -EADDRNOTAVAIL;
}
struct tcf_proto_ops * tcf_proto_lookup_ops(struct rtattr *kind)
{
struct tcf_proto_ops *t;
if (kind) {
for (t = tcf_proto_base; t; t = t->next) {
if (rtattr_strcmp(kind, t->kind) == 0)
return t;
}
}
return NULL;
}
struct Qdisc_ops *qdisc_lookup_ops(struct rtattr *kind)
{
struct Qdisc_ops *q;
if (kind) {
for (q = qdisc_base; q; q = q->next) {
if (rtattr_strcmp(kind, q->id) == 0)
return q;
}
}
return NULL;
}
struct tcf_proto_ops * tcf_proto_lookup_ops(struct rtattr *kind)
{
struct tcf_proto_ops *t = NULL;
if (kind) {
read_lock(&cls_mod_lock);
for (t = tcf_proto_base; t; t = t->next) {
if (rtattr_strcmp(kind, t->kind) == 0)
break;
}
read_unlock(&cls_mod_lock);
}
return t;
}
struct Qdisc_ops *qdisc_lookup_ops(struct rtattr *kind)
{
struct Qdisc_ops *q = NULL;
if (kind) {
read_lock(&qdisc_mod_lock);
for (q = qdisc_base; q; q = q->next) {
if (rtattr_strcmp(kind, q->id) == 0)
break;
}
read_unlock(&qdisc_mod_lock);
}
return q;
}
static struct tcf_proto_ops * tcf_proto_lookup_ops(struct rtattr *kind)
{
struct tcf_proto_ops *t = NULL;
if (kind) {
read_lock(&cls_mod_lock);
for (t = tcf_proto_base; t; t = t->next) {
if (rtattr_strcmp(kind, t->kind) == 0) {
if (!try_module_get(t->owner))
t = NULL;
break;
}
}
read_unlock(&cls_mod_lock);
}
return t;
}
/* lookup by rtattr */
static struct tc_action_ops *tc_lookup_action(struct rtattr *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 (!try_module_get(a->owner)) {
read_unlock(&act_mod_lock);
return NULL;
}
break;
}
}
read_unlock(&act_mod_lock);
}
return a;
}
