static int deth_netlink_broadcast_addresses(struct net* net, u32 index)
{
struct deth_net* dn = net_generic(net, deth_net_id);
if (!dn || !dn->nl_sk || !netlink_has_listeners(dn->nl_sk, NETLINK_DETH_GROUP))
{
return -ESRCH;
}
return deth_netlink_do_broadcast_addresses(dn->nl_sk, index);
}
static int deth_netlink_broadcast_packet(struct net* net, const char* pkt, int size, u32 index)
{
struct deth_net* dn = net_generic(net, deth_net_id);
if (!dn || !dn->nl_sk || !netlink_has_listeners(dn->nl_sk, NETLINK_DETH_GROUP))
{
return -ESRCH;
}
return deth_netlink_do_broadcast_packet(dn->nl_sk, pkt, size, index);
}
int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
{
static u32 seq;
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh;
int ret = 0;
if (group > ND_MAX_GROUP)
return -EINVAL;
if (!netlink_has_listeners(sock, group + 1))
return -ESRCH;
skb = alloc_skb(NLMSG_SPACE(len), GFP_ATOMIC);
if (!skb)
return -ENOMEM;
seq++;
nlh = nlmsg_put(skb, 0, seq, type, len, 0);
memcpy(NLMSG_DATA(nlh), msg, len);
NETLINK_CB(skb).portid = 0;
NETLINK_CB(skb).dst_group = 0;
ret = netlink_broadcast(sock, skb, 0, group + 1, GFP_ATOMIC);
if (!ret)
return len;
if (ret != -ESRCH)
pr_err("nl broadcast g=%d, t=%d, l=%d, r=%d\n",
group, type, len, ret);
else if (netlink_has_listeners(sock, group + 1))
return -EAGAIN;
return ret;
}
int nfnetlink_has_listeners(struct net *net, unsigned int group)
{
return netlink_has_listeners(net->nfnl, group);
}
int nfnetlink_has_listeners(unsigned int group)
{
return netlink_has_listeners(nfnl, group);
}
bool rdma_nl_chk_listeners(unsigned int group)
{
return netlink_has_listeners(nls, group);
}
int rdma_nl_chk_listeners(unsigned int group)
{
return (netlink_has_listeners(nls, group)) ? 0 : -1;
}
