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[INET]: Cleanup the xfrm4_tunnel_(un)register 

Both check for the family to select an appropriate tunnel list.
Consolidate this check and make the for() loop more readable.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2007-11-10 21:48:54 -08:00 committed by David S. Miller
parent 99f933263a
commit 358352b8b8
1 changed files with 7 additions and 4 deletions
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11
net/ipv4/tunnel4.c
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@ -17,6 +17,11 @@ static struct xfrm_tunnel *tunnel4_handlers;
static struct xfrm_tunnel *tunnel64_handlers;
static DEFINE_MUTEX(tunnel4_mutex);
static inline struct xfrm_tunnel **fam_handlers(unsigned short family)
{
return (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
}
int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family)
{
struct xfrm_tunnel **pprev;
@ -25,8 +30,7 @@ int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family)
mutex_lock(&tunnel4_mutex);
for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
*pprev; pprev = &(*pprev)->next) {
for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) {
if ((*pprev)->priority > priority)
break;
if ((*pprev)->priority == priority)
@ -53,8 +57,7 @@ int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family)
mutex_lock(&tunnel4_mutex);
for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
*pprev; pprev = &(*pprev)->next) {
for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) {
if (*pprev == handler) {
*pprev = handler->next;
ret = 0;