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[NETLINK]: Add set/getsockopt options to support more than 32 groups

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NETLINK_ADD_MEMBERSHIP/NETLINK_DROP_MEMBERSHIP are used to join/leave
groups, NETLINK_PKTINFO is used to enable nl_pktinfo control messages
for received packets to get the extended destination group number.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2005-08-15 12:32:15 -07:00 • committed by David S. Miller
commit 9a4595bc7e
3 changed files with 103 additions and 2 deletions
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9
include/linux/netlink.h
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@ -90,6 +90,15 @@ struct nlmsgerr
struct nlmsghdr msg;
};
#define NETLINK_ADD_MEMBERSHIP 1
#define NETLINK_DROP_MEMBERSHIP 2
#define NETLINK_PKTINFO 3
struct nl_pktinfo
{
__u32 group;
};
#define NET_MAJOR 36 /* Major 36 is reserved for networking */
enum {

1
include/linux/socket.h
View file

@ -272,6 +272,7 @@ struct ucred {
#define SOL_NETBEUI 267
#define SOL_LLC 268
#define SOL_DCCP 269
#define SOL_NETLINK 270
/* IPX options */
#define IPX_TYPE 1