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| author | Thomas Graf <tgraf@suug.ch> | 2006-08-15 00:31:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 14:54:49 -0700 |
| commit | d387f6ad10764fc2174373b4a1cca443adee36e3 (patch) | |
| tree | ed22c34f55de9c668eed1727d46239f3b48599b7 /include | |
| parent | 2942e90050569525628a9f34e0daaa9b661b49cc (diff) | |
| download | linux-d387f6ad10764fc2174373b4a1cca443adee36e3.tar.gz linux-d387f6ad10764fc2174373b4a1cca443adee36e3.tar.bz2 linux-d387f6ad10764fc2174373b4a1cca443adee36e3.zip | |
[NETLINK]: Add notification message sending interface
Adds nlmsg_notify() implementing proper notification logic. The
message is multicasted to all listeners in the group. The
applications the requests orignates from can request a unicast
back report in which case said socket will be excluded from the
multicast to avoid duplicated notifications.
nlmsg_multicast() is extended to take allocation flags to
allow notification in atomic contexts.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/genetlink.h | 5 | ||||
| -rw-r--r-- | include/net/netlink.h | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h index 8c2287264266..97d6d3aba9d2 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -133,11 +133,12 @@ static inline int genlmsg_cancel(struct sk_buff *skb, void *hdr) * @skb: netlink message as socket buffer * @pid: own netlink pid to avoid sending to yourself * @group: multicast group id + * @flags: allocation flags */ static inline int genlmsg_multicast(struct sk_buff *skb, u32 pid, - unsigned int group) + unsigned int group, gfp_t flags) { - return nlmsg_multicast(genl_sock, skb, pid, group); + return nlmsg_multicast(genl_sock, skb, pid, group, flags); } /** diff --git a/include/net/netlink.h b/include/net/netlink.h index 3a5e40b1e045..b154b81d9a7a 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -43,6 +43,7 @@ * Message Sending: * nlmsg_multicast() multicast message to several groups * nlmsg_unicast() unicast a message to a single socket + * nlmsg_notify() send notification message * * Message Length Calculations: * nlmsg_msg_size(payload) length of message w/o padding @@ -545,15 +546,16 @@ static inline void nlmsg_free(struct sk_buff *skb) * @skb: netlink message as socket buffer * @pid: own netlink pid to avoid sending to yourself * @group: multicast group id + * @flags: allocation flags */ static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb, - u32 pid, unsigned int group) + u32 pid, unsigned int group, gfp_t flags) { int err; NETLINK_CB(skb).dst_group = group; - err = netlink_broadcast(sk, skb, pid, group, GFP_KERNEL); + err = netlink_broadcast(sk, skb, pid, group, flags); if (err > 0) err = 0; |