#include "eigrpd/eigrp_memory.h"
/*EIGRP SIA-QUERY read function*/
-void
-eigrp_siaquery_receive (struct eigrp *eigrp, struct ip *iph, struct eigrp_header *eigrph,
- struct stream * s, struct eigrp_interface *ei, int size)
+void eigrp_siaquery_receive(struct eigrp *eigrp, struct ip *iph,
+ struct eigrp_header *eigrph, struct stream *s,
+ struct eigrp_interface *ei, int size)
{
- struct eigrp_neighbor *nbr;
- struct TLV_IPv4_Internal_type *tlv;
-
- u_int16_t type;
-
- /* increment statistics. */
- ei->siaQuery_in++;
-
- /* get neighbor struct */
- nbr = eigrp_nbr_get(ei, eigrph, iph);
-
- /* neighbor must be valid, eigrp_nbr_get creates if none existed */
- assert(nbr);
-
- nbr->recv_sequence_number = ntohl(eigrph->sequence);
-
- while (s->endp > s->getp)
- {
- type = stream_getw(s);
- if (type == EIGRP_TLV_IPv4_INT)
- {
- struct prefix_ipv4 dest_addr;
-
- stream_set_getp(s, s->getp - sizeof(u_int16_t));
-
- tlv = eigrp_read_ipv4_tlv(s);
-
- dest_addr.family = AFI_IP;
- dest_addr.prefix = tlv->destination;
- dest_addr.prefixlen = tlv->prefix_length;
- struct eigrp_prefix_entry *dest =
- eigrp_topology_table_lookup_ipv4(eigrp->topology_table, &dest_addr);
-
- /* If the destination exists (it should, but one never know)*/
- if (dest != NULL)
- {
- struct eigrp_fsm_action_message *msg;
- msg = XCALLOC(MTYPE_EIGRP_FSM_MSG,
- sizeof(struct eigrp_fsm_action_message));
- struct eigrp_neighbor_entry *entry =
- eigrp_prefix_entry_lookup(dest->entries, nbr);
- msg->packet_type = EIGRP_OPC_SIAQUERY;
- msg->eigrp = eigrp;
- msg->data_type = EIGRP_TLV_IPv4_INT;
- msg->adv_router = nbr;
- msg->data.ipv4_int_type = tlv;
- msg->entry = entry;
- msg->prefix = dest;
- int event = eigrp_get_fsm_event(msg);
- eigrp_fsm_event(msg, event);
- }
- eigrp_IPv4_InternalTLV_free (tlv);
- }
- }
- eigrp_hello_send_ack(nbr);
+ struct eigrp_neighbor *nbr;
+ struct TLV_IPv4_Internal_type *tlv;
+
+ u_int16_t type;
+
+ /* increment statistics. */
+ ei->siaQuery_in++;
+
+ /* get neighbor struct */
+ nbr = eigrp_nbr_get(ei, eigrph, iph);
+
+ /* neighbor must be valid, eigrp_nbr_get creates if none existed */
+ assert(nbr);
+
+ nbr->recv_sequence_number = ntohl(eigrph->sequence);
+
+ while (s->endp > s->getp) {
+ type = stream_getw(s);
+ if (type == EIGRP_TLV_IPv4_INT) {
+ struct prefix_ipv4 dest_addr;
+
+ stream_set_getp(s, s->getp - sizeof(u_int16_t));
+
+ tlv = eigrp_read_ipv4_tlv(s);
+
+ dest_addr.family = AFI_IP;
+ dest_addr.prefix = tlv->destination;
+ dest_addr.prefixlen = tlv->prefix_length;
+ struct eigrp_prefix_entry *dest =
+ eigrp_topology_table_lookup_ipv4(
+ eigrp->topology_table, &dest_addr);
+
+ /* If the destination exists (it should, but one never
+ * know)*/
+ if (dest != NULL) {
+ struct eigrp_fsm_action_message *msg;
+ msg = XCALLOC(MTYPE_EIGRP_FSM_MSG,
+ sizeof(struct
+ eigrp_fsm_action_message));
+ struct eigrp_neighbor_entry *entry =
+ eigrp_prefix_entry_lookup(dest->entries,
+ nbr);
+ msg->packet_type = EIGRP_OPC_SIAQUERY;
+ msg->eigrp = eigrp;
+ msg->data_type = EIGRP_TLV_IPv4_INT;
+ msg->adv_router = nbr;
+ msg->data.ipv4_int_type = tlv;
+ msg->entry = entry;
+ msg->prefix = dest;
+ int event = eigrp_get_fsm_event(msg);
+ eigrp_fsm_event(msg, event);
+ }
+ eigrp_IPv4_InternalTLV_free(tlv);
+ }
+ }
+ eigrp_hello_send_ack(nbr);
}
-void
-eigrp_send_siaquery (struct eigrp_neighbor *nbr, struct eigrp_prefix_entry *pe)
+void eigrp_send_siaquery(struct eigrp_neighbor *nbr,
+ struct eigrp_prefix_entry *pe)
{
- struct eigrp_packet *ep;
- u_int16_t length = EIGRP_HEADER_LEN;
-
- ep = eigrp_packet_new(nbr->ei->ifp->mtu);
-
- /* Prepare EIGRP INIT UPDATE header */
- eigrp_packet_header_init(EIGRP_OPC_SIAQUERY, nbr->ei, ep->s, 0,
- nbr->ei->eigrp->sequence_number, 0);
-
- // encode Authentication TLV, if needed
- if((IF_DEF_PARAMS (nbr->ei->ifp)->auth_type == EIGRP_AUTH_TYPE_MD5) &&
- (IF_DEF_PARAMS (nbr->ei->ifp)->auth_keychain != NULL))
- {
- length += eigrp_add_authTLV_MD5_to_stream(ep->s,nbr->ei);
- }
-
- length += eigrp_add_internalTLV_to_stream(ep->s, pe);
-
- if((IF_DEF_PARAMS (nbr->ei->ifp)->auth_type == EIGRP_AUTH_TYPE_MD5) &&
- (IF_DEF_PARAMS (nbr->ei->ifp)->auth_keychain != NULL))
- {
- eigrp_make_md5_digest(nbr->ei,ep->s, EIGRP_AUTH_UPDATE_FLAG);
- }
-
- /* EIGRP Checksum */
- eigrp_packet_checksum(nbr->ei, ep->s, length);
-
- ep->length = length;
- ep->dst.s_addr = nbr->src.s_addr;
-
- /*This ack number we await from neighbor*/
- ep->sequence_number = nbr->ei->eigrp->sequence_number;
-
- if (nbr->state == EIGRP_NEIGHBOR_UP)
- {
- /*Put packet to retransmission queue*/
- eigrp_fifo_push_head(nbr->retrans_queue, ep);
-
- if (nbr->retrans_queue->count == 1)
- {
- eigrp_send_packet_reliably(nbr);
- }
- }
- else
- eigrp_packet_free(ep);
+ struct eigrp_packet *ep;
+ u_int16_t length = EIGRP_HEADER_LEN;
+
+ ep = eigrp_packet_new(nbr->ei->ifp->mtu);
+
+ /* Prepare EIGRP INIT UPDATE header */
+ eigrp_packet_header_init(EIGRP_OPC_SIAQUERY, nbr->ei, ep->s, 0,
+ nbr->ei->eigrp->sequence_number, 0);
+
+ // encode Authentication TLV, if needed
+ if ((IF_DEF_PARAMS(nbr->ei->ifp)->auth_type == EIGRP_AUTH_TYPE_MD5)
+ && (IF_DEF_PARAMS(nbr->ei->ifp)->auth_keychain != NULL)) {
+ length += eigrp_add_authTLV_MD5_to_stream(ep->s, nbr->ei);
+ }
+
+ length += eigrp_add_internalTLV_to_stream(ep->s, pe);
+
+ if ((IF_DEF_PARAMS(nbr->ei->ifp)->auth_type == EIGRP_AUTH_TYPE_MD5)
+ && (IF_DEF_PARAMS(nbr->ei->ifp)->auth_keychain != NULL)) {
+ eigrp_make_md5_digest(nbr->ei, ep->s, EIGRP_AUTH_UPDATE_FLAG);
+ }
+
+ /* EIGRP Checksum */
+ eigrp_packet_checksum(nbr->ei, ep->s, length);
+
+ ep->length = length;
+ ep->dst.s_addr = nbr->src.s_addr;
+
+ /*This ack number we await from neighbor*/
+ ep->sequence_number = nbr->ei->eigrp->sequence_number;
+
+ if (nbr->state == EIGRP_NEIGHBOR_UP) {
+ /*Put packet to retransmission queue*/
+ eigrp_fifo_push_head(nbr->retrans_queue, ep);
+
+ if (nbr->retrans_queue->count == 1) {
+ eigrp_send_packet_reliably(nbr);
+ }
+ } else
+ eigrp_packet_free(ep);
}
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