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genetlink: Add genl_notify()

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Open vSwitch uses Generic Netlink interface for communication
between userspace and kernel module. genl_notify() is used
for sending notification back to userspace.

genl_notify() is analogous to rtnl_notify() but uses genl_sock
instead of rtnl.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar
2011-11-10 19:14:37 -08:00
committed by Jesse Gross
parent 340e8dc1fb
commit 263ba61d3b
2 changed files with 15 additions and 0 deletions
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2
include/net/genetlink.h
View File

@@ -128,6 +128,8 @@ extern int genl_register_mc_group(struct genl_family *family,
struct genl_multicast_group *grp); struct genl_multicast_group *grp);
extern void genl_unregister_mc_group(struct genl_family *family, extern void genl_unregister_mc_group(struct genl_family *family,
struct genl_multicast_group *grp); struct genl_multicast_group *grp);
extern void genl_notify(struct sk_buff *skb, struct net *net, u32 pid,
u32 group, struct nlmsghdr *nlh, gfp_t flags);
/** /**
* genlmsg_put - Add generic netlink header to netlink message * genlmsg_put - Add generic netlink header to netlink message

13
net/netlink/genetlink.c
View File

@@ -946,3 +946,16 @@ int genlmsg_multicast_allns(struct sk_buff *skb, u32 pid, unsigned int group,
return genlmsg_mcast(skb, pid, group, flags); return genlmsg_mcast(skb, pid, group, flags);
} }
EXPORT_SYMBOL(genlmsg_multicast_allns); EXPORT_SYMBOL(genlmsg_multicast_allns);
void genl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
struct nlmsghdr *nlh, gfp_t flags)
{
struct sock *sk = net->genl_sock;
int report = 0;
if (nlh)
report = nlmsg_report(nlh);
nlmsg_notify(sk, skb, pid, group, report, flags);
}
EXPORT_SYMBOL(genl_notify);