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Sort by metric.

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This commit is contained in:
david
2013-02-01 05:01:59 +00:00
parent 8e20e6a65b
commit 5ab6c9fa93
1 changed files with 9 additions and 4 deletions
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13
libnetutil/netutil.cc
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@@ -1199,8 +1199,8 @@ void tcppacketoptinfo(u8 *optp, int len, char *result, int bufsize) {
/* A trivial function used with qsort to sort the routes by netmask */
static int nmaskcmp(const void *a, const void *b) {
/* A trivial function used with qsort to sort the routes by metric and netmask */
static int routecmp(const void *a, const void *b) {
struct sys_route *r1 = (struct sys_route *) a;
struct sys_route *r2 = (struct sys_route *) b;
if (r1->dest.ss_family < r2->dest.ss_family)
@@ -1208,6 +1208,11 @@ static int nmaskcmp(const void *a, const void *b) {
else if (r1->dest.ss_family > r2->dest.ss_family)
return 1;
if (r1->metric < r2->metric)
return -1;
else if (r1->metric > r2->metric)
return 1;
if (r1->netmask_bits < r2->netmask_bits)
return 1;
else if (r1->netmask_bits > r2->netmask_bits)
@@ -1692,8 +1697,8 @@ struct sys_route *getsysroutes(int *howmany, char *errstr, size_t errstrlen) {
return NULL;
}else{
numroutes = *howmany;
/* Ensure that the route array is sorted by netmask */
qsort(routes, numroutes, sizeof(routes[0]), nmaskcmp);
/* Ensure that the route array is sorted by metric and netmask */
qsort(routes, numroutes, sizeof(routes[0]), routecmp);
}
return routes;
}