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-rw-r--r--babeld/kernel.c151
1 files changed, 54 insertions, 97 deletions
diff --git a/babeld/kernel.c b/babeld/kernel.c
index 6cdd66e48..394d7b1e8 100644
--- a/babeld/kernel.c
+++ b/babeld/kernel.c
@@ -51,13 +51,8 @@ THE SOFTWARE.
static int
-kernel_route_v4(int add, const unsigned char *pref, unsigned short plen,
- const unsigned char *gate, int ifindex,
- unsigned int metric);
-static int
-kernel_route_v6(int add, const unsigned char *pref, unsigned short plen,
- const unsigned char *gate, int ifindex,
- unsigned int metric);
+zebra_route(int add, int familt, const unsigned char *pref, unsigned short plen,
+ const unsigned char *gate, int ifindex, unsigned int metric);
int
kernel_interface_operational(struct interface *interface)
@@ -84,7 +79,7 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
unsigned int newmetric)
{
int rc;
- int ipv4;
+ int family;
/* Check that the protocol family is consistent. */
if(plen >= 96 && v4mapped(pref)) {
@@ -92,46 +87,37 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
errno = EINVAL;
return -1;
}
- ipv4 = 1;
+ family = AF_INET;
} else {
if(v4mapped(gate)) {
errno = EINVAL;
return -1;
}
- ipv4 = 0;
+ family = AF_INET6;
}
switch (operation) {
case ROUTE_ADD:
- return ipv4 ?
- kernel_route_v4(1, pref, plen, gate, ifindex, metric):
- kernel_route_v6(1, pref, plen, gate, ifindex, metric);
+ return zebra_route(1, family, pref, plen, gate, ifindex, metric);
break;
case ROUTE_FLUSH:
- return ipv4 ?
- kernel_route_v4(0, pref, plen, gate, ifindex, metric):
- kernel_route_v6(0, pref, plen, gate, ifindex, metric);
+ return zebra_route(0, family, pref, plen, gate, ifindex, metric);
break;
case ROUTE_MODIFY:
if(newmetric == metric && memcmp(newgate, gate, 16) == 0 &&
newifindex == ifindex)
return 0;
debugf(BABEL_DEBUG_ROUTE, "Modify route: delete old; add new.");
- rc = ipv4 ?
- kernel_route_v4(0, pref, plen, gate, ifindex, metric):
- kernel_route_v6(0, pref, plen, gate, ifindex, metric);
-
+ rc = zebra_route(0, family, pref, plen, gate, ifindex, metric);
if (rc < 0)
return -1;
- rc = ipv4 ?
- kernel_route_v4(1, pref, plen, newgate, newifindex, newmetric):
- kernel_route_v6(1, pref, plen, newgate, newifindex, newmetric);
-
+ rc = zebra_route(1, family, pref, plen, newgate, newifindex,
+ newmetric);
return rc;
break;
default:
- zlog_err("this should never appens (false value - kernel_route)");
+ zlog_err("this should never happen (false value - kernel_route)");
assert(0);
exit(1);
break;
@@ -139,108 +125,79 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
}
static int
-kernel_route_v4(int add,
- const unsigned char *pref, unsigned short plen,
- const unsigned char *gate, int ifindex, unsigned int metric)
+zebra_route(int add, int family, const unsigned char *pref, unsigned short plen,
+ const unsigned char *gate, int ifindex, unsigned int metric)
{
struct zapi_route api; /* quagga's communication system */
- struct zapi_nexthop *api_nh; /* next router to go - no ECMP */
struct prefix quagga_prefix; /* quagga's prefix */
- struct in_addr babel_prefix_addr; /* babeld's prefix addr */
+ union g_addr babel_prefix_addr; /* babeld's prefix addr */
+ struct zapi_nexthop *api_nh; /* next router to go - no ECMP */
api_nh = &api.nexthops[0];
/* convert to be understandable by quagga */
/* convert given addresses */
- uchar_to_inaddr(&babel_prefix_addr, pref);
-
- /* make prefix structure */
- memset (&quagga_prefix, 0, sizeof(quagga_prefix));
- quagga_prefix.family = AF_INET;
- IPV4_ADDR_COPY (&quagga_prefix.u.prefix4, &babel_prefix_addr);
- quagga_prefix.prefixlen = plen - 96; /* our plen is for v4mapped's addr */
- apply_mask(&quagga_prefix);
-
- memset(&api, 0, sizeof(api));
- api.type = ZEBRA_ROUTE_BABEL;
- api.flags = 0;
- api.message = 0;
- api.instance = 0;
- api.safi = SAFI_UNICAST;
- api.vrf_id = VRF_DEFAULT;
- api.prefix = quagga_prefix;
-
- SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
- if(metric >= KERNEL_INFINITY) {
- api.flags = ZEBRA_FLAG_REJECT;
- api.nexthop_num = 0;
- } else {
- api.nexthop_num = 1;
- api_nh->ifindex = ifindex;
- uchar_to_inaddr(&api_nh->gate.ipv4, gate);
- if (IPV4_ADDR_SAME (&api_nh->gate.ipv4, &quagga_prefix.u.prefix4) &&
- quagga_prefix.prefixlen == 32) {
- api_nh->type = NEXTHOP_TYPE_IFINDEX;
- } else {
- api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX;
- }
- SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
- api.metric = metric;
+ switch (family) {
+ case AF_INET:
+ uchar_to_inaddr(&babel_prefix_addr.ipv4, pref);
+ break;
+ case AF_INET6:
+ uchar_to_in6addr(&babel_prefix_addr.ipv6, pref);
+ break;
}
- debugf(BABEL_DEBUG_ROUTE, "%s route (ipv4) to zebra",
- add ? "adding" : "removing" );
- return zclient_route_send (add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE,
- zclient, &api);
-}
-
-static int
-kernel_route_v6(int add, const unsigned char *pref, unsigned short plen,
- const unsigned char *gate, int ifindex, unsigned int metric)
-{
- struct zapi_route api; /* quagga's communication system */
- struct zapi_nexthop *api_nh; /* next router to go - no ECMP */
- struct prefix quagga_prefix; /* quagga's prefix */
- struct in6_addr babel_prefix_addr; /* babeld's prefix addr */
-
- api_nh = &api.nexthops[0];
-
- /* convert to be understandable by quagga */
- /* convert given addresses */
- uchar_to_in6addr(&babel_prefix_addr, pref);
-
/* make prefix structure */
memset (&quagga_prefix, 0, sizeof(quagga_prefix));
- quagga_prefix.family = AF_INET6;
- IPV6_ADDR_COPY (&quagga_prefix.u.prefix6, &babel_prefix_addr);
- quagga_prefix.prefixlen = plen;
+ quagga_prefix.family = family;
+ switch (family) {
+ case AF_INET:
+ IPV4_ADDR_COPY (&quagga_prefix.u.prefix4, &babel_prefix_addr.ipv4);
+ /* our plen is for v4mapped's addr */
+ quagga_prefix.prefixlen = plen - 96;
+ break;
+ case AF_INET6:
+ IPV6_ADDR_COPY (&quagga_prefix.u.prefix6, &babel_prefix_addr.ipv6);
+ quagga_prefix.prefixlen = plen;
+ break;
+ }
apply_mask(&quagga_prefix);
memset(&api, 0, sizeof(api));
api.type = ZEBRA_ROUTE_BABEL;
- api.flags = 0;
- api.message = 0;
- api.instance = 0;
api.safi = SAFI_UNICAST;
api.vrf_id = VRF_DEFAULT;
api.prefix = quagga_prefix;
if(metric >= KERNEL_INFINITY) {
api.flags = ZEBRA_FLAG_REJECT;
- api.nexthop_num = 0;
} else {
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
api.nexthop_num = 1;
api_nh->ifindex = ifindex;
- uchar_to_in6addr(&api_nh->gate.ipv6, gate);
- /* difference to IPv4: always leave the linklocal as nexthop */
- api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+
+ switch (family) {
+ case AF_INET:
+ uchar_to_inaddr(&api_nh->gate.ipv4, gate);
+ if (IPV4_ADDR_SAME (&api_nh->gate.ipv4, &quagga_prefix.u.prefix4) &&
+ quagga_prefix.prefixlen == 32) {
+ api_nh->type = NEXTHOP_TYPE_IFINDEX;
+ } else {
+ api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX;
+ }
+ break;
+ case AF_INET6:
+ uchar_to_in6addr(&api_nh->gate.ipv6, gate);
+ /* difference to IPv4: always leave the linklocal as nexthop */
+ api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+ break;
+ }
SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
api.metric = metric;
}
- debugf(BABEL_DEBUG_ROUTE, "%s route (ipv6) to zebra",
- add ? "adding" : "removing" );
+ debugf(BABEL_DEBUG_ROUTE, "%s route (%s) to zebra",
+ add ? "adding" : "removing",
+ (family == AF_INET) ? "ipv4" : "ipv6");
return zclient_route_send (add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE,
zclient, &api);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 06:41:45 +0100