int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
struct nlmsghdr *nlh, gfp_t flags)
{
int report = 0;
if (nlh)
report = nlmsg_report(nlh);
return nlmsg_notify(rtnl, skb, pid, group, report, flags);
}
/* This is analogous to rtnl_notify() but uses genl_sock instead of rtnl.
*
* This is not (yet) in any upstream kernel. */
void genl_notify(struct sk_buff *skb, struct net *net, u32 portid, u32 group,
struct nlmsghdr *nlh, gfp_t flags)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
struct sock *sk = net->genl_sock;
#else
struct sock *sk = genl_sock;
#endif
int report = 0;
if (nlh)
report = nlmsg_report(nlh);
nlmsg_notify(sk, skb, portid, group, report, flags);
}
static int sockev_client_cb(struct notifier_block *nb,
unsigned long event, void *data)
{
struct sk_buff *skb;
struct nlmsghdr *nlh;
struct sknlsockevmsg *smsg;
struct socket *sock;
sock = (struct socket *)data;
if (socknlmsgsk == 0)
goto done;
if ((socknlmsgsk == NULL) || (sock == NULL) || (sock->sk == NULL))
goto done;
if (sock->sk->sk_family != AF_INET && sock->sk->sk_family != AF_INET6)
goto done;
if (event != SOCKEV_BIND && event != SOCKEV_LISTEN)
goto done;
skb = nlmsg_new(sizeof(struct sknlsockevmsg), GFP_KERNEL);
if (skb == NULL)
goto done;
nlh = nlmsg_put(skb, 0, 0, event, sizeof(struct sknlsockevmsg), 0);
if (nlh == NULL) {
kfree_skb(skb);
goto done;
}
NETLINK_CB(skb).dst_group = SKNLGRP_SOCKEV;
smsg = nlmsg_data(nlh);
smsg->pid = current->pid;
_sockev_event(event, smsg->event, sizeof(smsg->event));
smsg->skfamily = sock->sk->sk_family;
smsg->skstate = sock->sk->sk_state;
smsg->skprotocol = sock->sk->sk_protocol;
smsg->sktype = sock->sk->sk_type;
smsg->skflags = sock->sk->sk_flags;
nlmsg_notify(socknlmsgsk, skb, 0, SKNLGRP_SOCKEV, 0, GFP_KERNEL);
done:
return 0;
}
int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 portid,
unsigned int group, int echo, gfp_t flags)
{
return nlmsg_notify(net->nfnl, skb, portid, group, echo, flags);
}
int nfnetlink_send(struct sk_buff *skb, u32 pid,
unsigned group, int echo, gfp_t flags)
{
return nlmsg_notify(nfnl, skb, pid, group, echo, flags);
}