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| author | Neil Horman <nhorman@tuxdriver.com> | 2012-05-29 13:30:41 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-30 06:33:56 +0400 |
| commit | e9412c37082b5c932e83364aaed0c38c2ce33acb (patch) | |
| tree | 479e716c478173830e378f432d3d0b24c6979541 /include/linux | |
| parent | 2033e9bf06f07e049bbc77e9452856df846714cc (diff) | |
| download | linux-e9412c37082b5c932e83364aaed0c38c2ce33acb.tar.xz | |
genetlink: Build a generic netlink family module alias
Generic netlink searches for -type- formatted aliases when requesting a module to
fulfill a protocol request (i.e. net-pf-16-proto-16-type-<x>, where x is a type
value). However generic netlink protocols have no well defined type numbers,
they have string names. Modify genl_ctrl_getfamily to request an alias in the
format net-pf-16-proto-16-family-<x> instead, where x is a generic string, and
add a macro that builds on the previously added MODULE_ALIAS_NET_PF_PROTO_NAME
macro to allow modules to specifify those generic strings.
Note, l2tp previously hacked together an net-pf-16-proto-16-type-l2tp alias
using the MODULE_ALIAS macro, with these updates we can convert that to use the
PROTO_NAME macro.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: James Chapman <jchapman@katalix.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/genetlink.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/genetlink.h b/include/linux/genetlink.h index 73c28dea10ae..7a114016ac7d 100644 --- a/include/linux/genetlink.h +++ b/include/linux/genetlink.h @@ -110,6 +110,9 @@ extern int lockdep_genl_is_held(void); #define genl_dereference(p) \ rcu_dereference_protected(p, lockdep_genl_is_held()) +#define MODULE_ALIAS_GENL_FAMILY(family)\ + MODULE_ALIAS_NET_PF_PROTO_NAME(PF_NETLINK, NETLINK_GENERIC, "-family-" family) + #endif /* __KERNEL__ */ #endif /* __LINUX_GENERIC_NETLINK_H */ |