diff options
Diffstat (limited to 'proto/radv/packets.c')
| -rw-r--r-- | proto/radv/packets.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/proto/radv/packets.c b/proto/radv/packets.c index 5cd8b2de..d1f86ec1 100644 --- a/proto/radv/packets.c +++ b/proto/radv/packets.c @@ -82,6 +82,13 @@ struct radv_opt_dnssl char domain[]; }; +struct radv_opt_custom +{ + u8 type; + u8 length; + u8 payload[]; +}; + static int radv_prepare_route(struct radv_iface *ifa, struct radv_route *rt, char **buf, char *bufend) @@ -255,6 +262,36 @@ radv_prepare_dnssl(struct radv_iface *ifa, list *dnssl_list, char **buf, char *b } static int +radv_prepare_custom(struct radv_iface *ifa, list *custom_list, char **buf, char *bufend) +{ + struct radv_custom_config *ccf = HEAD(*custom_list); + + while(NODE_VALID(ccf)) + { + struct radv_opt_custom *op = (void *) *buf; + /* Add 2 octets for type and size and 8 - 1 for ceiling the division up to 8 octets */ + int size = (ccf->payload->length + 2 + 8 - 1) / 8; + if (bufend - *buf < size * 8) + goto too_much; + + memset(op, 0, size * 8); /* Clear buffer so there is no tail garbage */ + op->type = ccf->type; + op->length = size; + memcpy(op->payload, ccf->payload->data, ccf->payload->length); + + *buf += 8 * op->length; + ccf = NODE_NEXT(ccf); + } + + return 0; + + too_much: + log(L_WARN "%s: Too many RA options on interface %s", + ifa->ra->p.name, ifa->iface->name); + return -1; +} + +static int radv_prepare_prefix(struct radv_iface *ifa, struct radv_prefix *px, char **buf, char *bufend) { @@ -352,6 +389,14 @@ radv_prepare_ra(struct radv_iface *ifa) if (radv_prepare_dnssl(ifa, &ic->dnssl_list, &buf, bufend) < 0) goto done; + if (! ic->custom_local) + if (radv_prepare_custom(ifa, &cf->custom_list, &buf, bufend) < 0) + goto done; + + if (radv_prepare_custom(ifa, &ic->custom_list, &buf, bufend) < 0) + goto done; + + if (p->fib_up) { FIB_WALK(&p->routes, struct radv_route, rt) |