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Move flowtable rte checks to separate function.

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This commit is contained in:
melifaro 2015-11-30 05:59:22 +00:00
parent e198456483
commit 0dd8ba37e1
1 changed files with 63 additions and 50 deletions
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113
sys/net/route.c
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@ -1365,6 +1365,68 @@ rt_mpath_unlink(struct radix_node_head *rnh, struct rt_addrinfo *info,
}
#endif
#ifdef FLOWTABLE
static struct rtentry *
rt_flowtable_check_route(struct radix_node_head *rnh, struct rt_addrinfo *info)
{
struct radix_node *rn;
struct rtentry *rt0;
rt0 = NULL;
/* "flow-table" only supports IPv6 and IPv4 at the moment. */
switch (dst->sa_family) {
#ifdef INET6
case AF_INET6:
#endif
#ifdef INET
case AF_INET:
#endif
#if defined(INET6) || defined(INET)
rn = rnh->rnh_matchaddr(dst, rnh);
if (rn && ((rn->rn_flags & RNF_ROOT) == 0)) {
struct sockaddr *mask;
u_char *m, *n;
int len;
/*
* compare mask to see if the new route is
* more specific than the existing one
*/
rt0 = RNTORT(rn);
RT_LOCK(rt0);
RT_ADDREF(rt0);
RT_UNLOCK(rt0);
/*
* A host route is already present, so
* leave the flow-table entries as is.
*/
if (rt0->rt_flags & RTF_HOST) {
RTFREE(rt0);
rt0 = NULL;
} else if (!(flags & RTF_HOST) && netmask) {
mask = rt_mask(rt0);
len = mask->sa_len;
m = (u_char *)mask;
n = (u_char *)netmask;
while (len-- > 0) {
if (*n != *m)
break;
n++;
m++;
}
if (len == 0 || (*n < *m)) {
RTFREE(rt0);
rt0 = NULL;
}
}
}
#endif/* INET6 || INET */
}
return (rt0);
}
#endif
int
rtrequest1_fib(int req, struct rt_addrinfo *info, struct rtentry **ret_nrt,
u_int fibnum)
@ -1508,56 +1570,7 @@ rtrequest1_fib(int req, struct rt_addrinfo *info, struct rtentry **ret_nrt,
#endif
#ifdef FLOWTABLE
rt0 = NULL;
/* "flow-table" only supports IPv6 and IPv4 at the moment. */
switch (dst->sa_family) {
#ifdef INET6
case AF_INET6:
#endif
#ifdef INET
case AF_INET:
#endif
#if defined(INET6) || defined(INET)
rn = rnh->rnh_matchaddr(dst, rnh);
if (rn && ((rn->rn_flags & RNF_ROOT) == 0)) {
struct sockaddr *mask;
u_char *m, *n;
int len;
/*
* compare mask to see if the new route is
* more specific than the existing one
*/
rt0 = RNTORT(rn);
RT_LOCK(rt0);
RT_ADDREF(rt0);
RT_UNLOCK(rt0);
/*
* A host route is already present, so
* leave the flow-table entries as is.
*/
if (rt0->rt_flags & RTF_HOST) {
RTFREE(rt0);
rt0 = NULL;
} else if (!(flags & RTF_HOST) && netmask) {
mask = rt_mask(rt0);
len = mask->sa_len;
m = (u_char *)mask;
n = (u_char *)netmask;
while (len-- > 0) {
if (*n != *m)
break;
n++;
m++;
}
if (len == 0 || (*n < *m)) {
RTFREE(rt0);
rt0 = NULL;
}
}
}
#endif/* INET6 || INET */
}
rt0 = rt_flowtable_check_route(rnh, info);
#endif /* FLOWTABLE */
/* XXX mtu manipulation will be done in rnh_addaddr -- itojun */