/**
* nlmsg_notify - send a notification netlink message
* @sk: netlink socket to use
* @skb: notification message
* @portid: destination netlink portid for reports or 0
* @group: destination multicast group or 0
* @report: 1 to report back, 0 to disable
* @flags: allocation flags
*/
int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 portid,
unsigned int group, int report, gfp_t flags)
{
int err = 0;
if (group) {
int exclude_portid = 0;
if (report) {
atomic_inc(&skb->users);
exclude_portid = portid;
}
/* errors reported via destination sk->sk_err, but propagate
* delivery errors if NETLINK_BROADCAST_ERROR flag is set */
err = nlmsg_multicast(sk, skb, exclude_portid, group, flags);
}
if (report) {
int err2;
err2 = nlmsg_unicast(sk, skb, portid);
if (!err || err == -ESRCH)
err = err2;
}
return err;
}
a_status_t
acfg_net_indicate_event(struct net_device *dev, acfg_os_event_t *event,
int send_iwevent)
{
struct sk_buff *skb;
int err;
__acfg_event_t fn;
#if LINUX_VERSION_CODE >= KERNEL_VERSION (2,6,24)
if (!net_eq(dev_net(dev), &init_net))
return A_STATUS_FAILED ;
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION (2,6,24)
skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
#else
skb = nlmsg_new(NLMSG_SPACE(ACFG_MAX_PAYLOAD));
#endif
if (!skb)
return A_STATUS_ENOMEM ;
err = ev_fill_info(skb, dev, RTM_NEWLINK, event);
if (err < 0) {
kfree_skb(skb);
return A_STATUS_FAILED ;
}
NETLINK_CB(skb).dst_group = RTNLGRP_LINK;
#if ATOPT_ORI_ATHEROS_BUG
NETLINK_CB(skb).portid = 0; /* from kernel */
#else
NETLINK_CB(skb).pid = 0; /* from kernel */
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
NETLINK_CB(skb).dst_pid = 0; /* multicast */
#endif
/* Send event to acfg */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
err = nlmsg_multicast(acfg_ev_sock, skb, 0, RTNLGRP_NOTIFY);
#else
rtnl_notify(skb, &init_net, 0, RTNLGRP_NOTIFY, NULL, GFP_ATOMIC);
#endif
if (send_iwevent) {
/* Send iw event */
fn = iw_events[event->id];
if (fn != NULL) {
fn(dev, &event->data);
}
}
return A_STATUS_OK ;
}