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babeld: consolidate zebra interface into fewer functions.

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This commit is contained in:
Juliusz Chroboczek 2012-02-14 11:22:29 +01:00 committed by Paul Jakma
parent b63b4484c6
commit 5ca7986d54
1 changed files with 29 additions and 124 deletions
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153
babeld/kernel_zebra.c
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@ -58,21 +58,13 @@ THE SOFTWARE.
static int
kernel_route_add_v4(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric);
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_add_v6(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric);
static int
kernel_route_delete_v4(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric);
static int
kernel_route_delete_v6(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric);
kernel_route_v6(int add, const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric);
int
kernel_interface_operational(struct interface *interface)
@ -119,13 +111,13 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
switch (operation) {
case ROUTE_ADD:
return ipv4 ?
kernel_route_add_v4(pref, plen, gate, ifindex, metric):
kernel_route_add_v6(pref, plen, gate, ifindex, metric);
kernel_route_v4(1, pref, plen, gate, ifindex, metric):
kernel_route_v6(1, pref, plen, gate, ifindex, metric);
break;
case ROUTE_FLUSH:
return ipv4 ?
kernel_route_delete_v4(pref, plen, gate, ifindex, metric):
kernel_route_delete_v6(pref, plen, gate, ifindex, metric);
kernel_route_v4(0, pref, plen, gate, ifindex, metric):
kernel_route_v6(0, pref, plen, gate, ifindex, metric);
break;
case ROUTE_MODIFY:
if(newmetric == metric && memcmp(newgate, gate, 16) == 0 &&
@ -133,15 +125,15 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
return 0;
debugf(BABEL_DEBUG_ROUTE, "Modify route: delete old; add new.");
rc = ipv4 ?
kernel_route_delete_v4(pref, plen, gate, ifindex, metric):
kernel_route_delete_v6(pref, plen, gate, ifindex, metric);
kernel_route_v4(0, pref, plen, gate, ifindex, metric):
kernel_route_v6(0, pref, plen, gate, ifindex, metric);
if (rc < 0)
return -1;
rc = ipv4 ?
kernel_route_add_v4(pref, plen, newgate, newifindex, newmetric):
kernel_route_add_v6(pref, plen, newgate, newifindex, newmetric);
kernel_route_v4(1, pref, plen, newgate, newifindex, newmetric):
kernel_route_v6(1, pref, plen, newgate, newifindex, newmetric);
return rc;
break;
@ -154,8 +146,9 @@ kernel_route(int operation, const unsigned char *pref, unsigned short plen,
}
static int
kernel_route_add_v4(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex, unsigned int metric)
kernel_route_v4(int add,
const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex, unsigned int metric)
{
struct zapi_ipv4 api; /* quagga's communication system */
struct prefix_ipv4 quagga_prefix; /* quagga's prefix */
@ -197,14 +190,16 @@ kernel_route_add_v4(const unsigned char *pref, unsigned short plen,
api.metric = metric;
}
debugf(BABEL_DEBUG_ROUTE, "adding route (ipv4) to zebra");
return zapi_ipv4_route (ZEBRA_IPV4_ROUTE_ADD, zclient,
&quagga_prefix, &api);
debugf(BABEL_DEBUG_ROUTE, "%s route (ipv4) to zebra",
add ? "adding" : "removing" );
return zapi_ipv4_route (add ? ZEBRA_IPV4_ROUTE_ADD :
ZEBRA_IPV4_ROUTE_DELETE,
zclient, &quagga_prefix, &api);
}
static int
kernel_route_add_v6(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex, unsigned int metric)
kernel_route_v6(int add, const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex, unsigned int metric)
{
unsigned int tmp_ifindex = ifindex; /* (for typing) */
struct zapi_ipv6 api; /* quagga's communication system */
@ -244,101 +239,11 @@ kernel_route_add_v6(const unsigned char *pref, unsigned short plen,
api.metric = metric;
}
debugf(BABEL_DEBUG_ROUTE, "adding route (ipv6) to zebra");
return zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient,
&quagga_prefix, &api);
}
static int
kernel_route_delete_v4(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric)
{
struct zapi_ipv4 api; /* quagga's communication system */
struct prefix_ipv4 quagga_prefix; /* quagga's prefix */
struct in_addr babel_prefix_addr; /* babeld's prefix addr */
struct in_addr nexthop; /* next router to go */
struct in_addr *nexthop_pointer = &nexthop; /* it's an array! */
/* convert to be understandable by quagga */
/* convert given addresses */
uchar_to_inaddr(&babel_prefix_addr, pref);
uchar_to_inaddr(&nexthop, gate);
/* make prefix structure */
memset (&quagga_prefix, 0, sizeof(quagga_prefix));
quagga_prefix.family = AF_INET;
IPV4_ADDR_COPY (&quagga_prefix.prefix, &babel_prefix_addr);
quagga_prefix.prefixlen = plen - 96;
apply_mask_ipv4(&quagga_prefix);
api.type = ZEBRA_ROUTE_BABEL;
api.flags = 0;
api.message = 0;
api.safi = SAFI_UNICAST;
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
api.ifindex_num = 0;
if(metric >= KERNEL_INFINITY) {
api.flags = ZEBRA_FLAG_BLACKHOLE;
api.nexthop_num = 0;
} else {
api.nexthop_num = 1;
api.nexthop = &nexthop_pointer;
SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
api.metric = metric;
}
debugf(BABEL_DEBUG_ROUTE, "removing route (ipv4) to zebra");
return zapi_ipv4_route (ZEBRA_IPV4_ROUTE_DELETE, zclient,
&quagga_prefix, &api);
}
static int
kernel_route_delete_v6(const unsigned char *pref, unsigned short plen,
const unsigned char *gate, int ifindex,
unsigned int metric)
{
unsigned int tmp_ifindex = ifindex; /* (for typing) */
struct zapi_ipv6 api; /* quagga's communication system */
struct prefix_ipv6 quagga_prefix; /* quagga's prefix */
struct in6_addr babel_prefix_addr; /* babeld's prefix addr */
struct in6_addr nexthop; /* next router to go */
struct in6_addr *nexthop_pointer = &nexthop;
/* convert to be understandable by quagga */
/* convert given addresses */
uchar_to_in6addr(&babel_prefix_addr, pref);
uchar_to_in6addr(&nexthop, gate);
/* make prefix structure */
memset (&quagga_prefix, 0, sizeof(quagga_prefix));
quagga_prefix.family = AF_INET6;
IPV6_ADDR_COPY (&quagga_prefix.prefix, &babel_prefix_addr);
quagga_prefix.prefixlen = plen;
apply_mask_ipv6(&quagga_prefix);
api.type = ZEBRA_ROUTE_BABEL;
api.flags = 0;
api.message = 0;
api.safi = SAFI_UNICAST;
SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
if(metric >= KERNEL_INFINITY) {
api.flags = ZEBRA_FLAG_BLACKHOLE;
api.nexthop_num = 0;
api.ifindex_num = 0;
} else {
api.nexthop_num = 1;
api.nexthop = &nexthop_pointer;
SET_FLAG(api.message, ZAPI_MESSAGE_IFINDEX);
api.ifindex_num = 1;
api.ifindex = &tmp_ifindex;
SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
api.metric = metric;
}
debugf(BABEL_DEBUG_ROUTE, "removing route (ipv6) to zebra");
return zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient,
&quagga_prefix, &api);
debugf(BABEL_DEBUG_ROUTE, "%s route (ipv6) to zebra",
add ? "adding" : "removing" );
return zapi_ipv6_route (add ? ZEBRA_IPV6_ROUTE_ADD :
ZEBRA_IPV6_ROUTE_DELETE,
zclient, &quagga_prefix, &api);
}
int