void
send_address_withdraw(struct nbr *nbr, struct iface *iface)
{
struct ibuf *buf;
u_int16_t size;
if (nbr->iface->passive)
return;
log_debug("send_address_withdraw: neighbor ID %s", inet_ntoa(nbr->id));
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_address_withdraw");
/* XXX: multiple address on the same iface? */
size = LDP_HDR_SIZE + sizeof(struct ldp_msg) + sizeof(struct in_addr);
gen_ldp_hdr(buf, nbr->iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_ADDRWITHDRAW, size);
size -= sizeof(struct ldp_msg);
gen_address_list_tlv(buf, iface, size);
evbuf_enqueue(&nbr->wbuf, buf);
}
void
send_init(struct nbr *nbr)
{
struct ibuf *buf;
u_int16_t size;
log_debug("send_init: neighbor ID %s", inet_ntoa(nbr->id));
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_init");
size = LDP_HDR_SIZE + sizeof(struct ldp_msg) + SESS_PRMS_SIZE;
gen_ldp_hdr(buf, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_INIT, size);
size -= sizeof(struct ldp_msg);
gen_init_prms_tlv(buf, nbr, size);
evbuf_enqueue(&nbr->tcp->wbuf, buf);
}
void
send_notification_full(struct tcp_conn *tcp, struct notify_msg *nm)
{
struct ibuf *buf;
uint16_t size;
int err = 0;
/* calculate size */
size = LDP_HDR_SIZE + LDP_MSG_SIZE + STATUS_SIZE;
if (nm->flags & F_NOTIF_PW_STATUS)
size += PW_STATUS_TLV_SIZE;
if (nm->flags & F_NOTIF_FEC) {
size += TLV_HDR_SIZE;
switch (nm->fec.type) {
case MAP_TYPE_PWID:
size += FEC_PWID_ELM_MIN_LEN;
if (nm->fec.flags & F_MAP_PW_ID)
size += sizeof(uint32_t);
break;
}
}
if ((buf = ibuf_open(size)) == NULL)
fatal(__func__);
err |= gen_ldp_hdr(buf, size);
size -= LDP_HDR_SIZE;
err |= gen_msg_hdr(buf, MSG_TYPE_NOTIFICATION, size);
err |= gen_status_tlv(buf, nm->status_code, nm->msg_id, nm->msg_type);
/* optional tlvs */
if (nm->flags & F_NOTIF_PW_STATUS)
err |= gen_pw_status_tlv(buf, nm->pw_status);
if (nm->flags & F_NOTIF_FEC)
err |= gen_fec_tlv(buf, &nm->fec);
if (err) {
ibuf_free(buf);
return;
}
evbuf_enqueue(&tcp->wbuf, buf);
}
void
send_keepalive(struct nbr *nbr)
{
struct ibuf *buf;
u_int16_t size;
if (nbr->iface->passive)
return;
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_keepalive");
size = LDP_HDR_SIZE + sizeof(struct ldp_msg);
gen_ldp_hdr(buf, nbr->iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_KEEPALIVE, size);
evbuf_enqueue(&nbr->wbuf, buf);
}
void
send_address(struct nbr *nbr, struct iface *iface)
{
struct ibuf *buf;
struct iface *niface;
u_int16_t size, iface_count = 0;
if (nbr->iface->passive)
return;
log_debug("send_address: neighbor ID %s", inet_ntoa(nbr->id));
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_address");
/* XXX: multiple address on the same iface? */
if (iface == NULL)
LIST_FOREACH(niface, &leconf->iface_list, entry)
iface_count++;
else
iface_count = 1;
size = LDP_HDR_SIZE + sizeof(struct ldp_msg) +
sizeof(struct address_list_tlv) +
iface_count * sizeof(struct in_addr);
gen_ldp_hdr(buf, nbr->iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_ADDR, size);
size -= sizeof(struct ldp_msg);
gen_address_list_tlv(buf, iface, size);
evbuf_enqueue(&nbr->wbuf, buf);
}
int
send_hello(struct iface *iface)
{
struct sockaddr_in dst;
struct ibuf *buf;
u_int16_t size;
dst.sin_port = htons(LDP_PORT);
dst.sin_family = AF_INET;
dst.sin_len = sizeof(struct sockaddr_in);
inet_aton(AllRouters, &dst.sin_addr);
if (iface->passive)
return (0);
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_hello");
size = LDP_HDR_SIZE + sizeof(struct ldp_msg) +
sizeof(struct hello_prms_tlv);
gen_ldp_hdr(buf, iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_HELLO, size);
size -= sizeof(struct ldp_msg);
gen_hello_prms_tlv(iface, buf, size);
send_packet(iface, buf->buf, buf->wpos, &dst);
ibuf_free(buf);
return (0);
}
struct ibuf *
send_notification(u_int32_t status, struct iface *iface, u_int32_t msgid,
u_int32_t type)
{
struct ibuf *buf;
u_int16_t size;
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_notification");
size = LDP_HDR_SIZE + sizeof(struct ldp_msg) + STATUS_SIZE;
gen_ldp_hdr(buf, iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_NOTIFICATION, size);
size -= sizeof(struct ldp_msg);
gen_status_tlv(buf, status, msgid, type);
return (buf);
}
