mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-08-06 06:14:35 +00:00
babeld: unify kernel_route_v4() and kernel_route_v6()
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
This commit is contained in:
Renato Westphal
parent
0e51b4a368
commit
c8f9e916df
153
babeld/kernel.c
153
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);
|
||||
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;
|
||||
}
|
||||
|
||||
/* 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 */
|
||||
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;
|
||||
|
||||
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
|
||||
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_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;
|
||||
|
||||
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 (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;
|
||||
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;
|
||||
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);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user