#include "eigrpd/eigrp_fsm.h"
#include "eigrpd/eigrp_memory.h"
-void
-eigrp_send_reply (struct eigrp_neighbor *nbr, struct eigrp_prefix_entry *pe)
+void eigrp_send_reply(struct eigrp_neighbor *nbr, struct eigrp_prefix_entry *pe)
{
- struct eigrp_packet *ep;
- u_int16_t length = EIGRP_HEADER_LEN;
-
- struct access_list *alist;
- struct prefix_list *plist;
- struct access_list *alist_i;
- struct prefix_list *plist_i;
- struct eigrp *e;
- struct eigrp_prefix_entry *pe2;
-
- //TODO: Work in progress
- /* Filtering */
- /* get list from eigrp process */
- e = eigrp_lookup();
- pe2 = XCALLOC(MTYPE_EIGRP_PREFIX_ENTRY, sizeof(struct eigrp_prefix_entry));
- memcpy(pe2,pe,sizeof(struct eigrp_prefix_entry));
- /* Get access-lists and prefix-lists from process and interface */
- alist = e->list[EIGRP_FILTER_OUT];
- plist = e->prefix[EIGRP_FILTER_OUT];
- alist_i = nbr->ei->list[EIGRP_FILTER_OUT];
- plist_i = nbr->ei->prefix[EIGRP_FILTER_OUT];
- zlog_info("REPLY Send: Filtering");
-
- zlog_info("REPLY SEND Prefix: %s", inet_ntoa(nbr->src));
- /* Check if any list fits */
- if ((alist &&
- access_list_apply (alist, (struct prefix *) pe2->destination_ipv4) == FILTER_DENY) ||
- (plist && prefix_list_apply (plist, (struct prefix *) pe2->destination_ipv4) == PREFIX_DENY)||
- (alist_i && access_list_apply (alist_i, (struct prefix *) pe2->destination_ipv4) == FILTER_DENY)||
- (plist_i && prefix_list_apply (plist_i, (struct prefix *) pe2->destination_ipv4) == PREFIX_DENY))
- {
- zlog_info("REPLY SEND: Setting Metric to max");
- pe2->reported_metric.delay = EIGRP_MAX_METRIC;
-
- }
- else
- {
- zlog_info("REPLY SEND: Not setting metric");
- }
-
- /*
- * End of filtering
- */
-
- ep = eigrp_packet_new(nbr->ei->ifp->mtu);
-
- /* Prepare EIGRP INIT UPDATE header */
- eigrp_packet_header_init(EIGRP_OPC_REPLY, 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, pe2);
-
- 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;
-
- /*Put packet to retransmission queue*/
- eigrp_fifo_push_head(nbr->retrans_queue, ep);
-
- if (nbr->retrans_queue->count == 1)
- {
- eigrp_send_packet_reliably(nbr);
- }
-
- XFREE(MTYPE_EIGRP_PREFIX_ENTRY, pe2);
+ struct eigrp_packet *ep;
+ u_int16_t length = EIGRP_HEADER_LEN;
+
+ struct access_list *alist;
+ struct prefix_list *plist;
+ struct access_list *alist_i;
+ struct prefix_list *plist_i;
+ struct eigrp *e;
+ struct eigrp_prefix_entry *pe2;
+
+ // TODO: Work in progress
+ /* Filtering */
+ /* get list from eigrp process */
+ e = eigrp_lookup();
+ pe2 = XCALLOC(MTYPE_EIGRP_PREFIX_ENTRY,
+ sizeof(struct eigrp_prefix_entry));
+ memcpy(pe2, pe, sizeof(struct eigrp_prefix_entry));
+ /* Get access-lists and prefix-lists from process and interface */
+ alist = e->list[EIGRP_FILTER_OUT];
+ plist = e->prefix[EIGRP_FILTER_OUT];
+ alist_i = nbr->ei->list[EIGRP_FILTER_OUT];
+ plist_i = nbr->ei->prefix[EIGRP_FILTER_OUT];
+ zlog_info("REPLY Send: Filtering");
+
+ zlog_info("REPLY SEND Prefix: %s", inet_ntoa(nbr->src));
+ /* Check if any list fits */
+ if ((alist
+ && access_list_apply(alist, (struct prefix *)pe2->destination_ipv4)
+ == FILTER_DENY)
+ || (plist
+ && prefix_list_apply(plist,
+ (struct prefix *)pe2->destination_ipv4)
+ == PREFIX_DENY)
+ || (alist_i
+ && access_list_apply(alist_i,
+ (struct prefix *)pe2->destination_ipv4)
+ == FILTER_DENY)
+ || (plist_i
+ && prefix_list_apply(plist_i,
+ (struct prefix *)pe2->destination_ipv4)
+ == PREFIX_DENY)) {
+ zlog_info("REPLY SEND: Setting Metric to max");
+ pe2->reported_metric.delay = EIGRP_MAX_METRIC;
+
+ } else {
+ zlog_info("REPLY SEND: Not setting metric");
+ }
+
+ /*
+ * End of filtering
+ */
+
+ ep = eigrp_packet_new(nbr->ei->ifp->mtu);
+
+ /* Prepare EIGRP INIT UPDATE header */
+ eigrp_packet_header_init(EIGRP_OPC_REPLY, 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, pe2);
+
+ 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;
+
+ /*Put packet to retransmission queue*/
+ eigrp_fifo_push_head(nbr->retrans_queue, ep);
+
+ if (nbr->retrans_queue->count == 1) {
+ eigrp_send_packet_reliably(nbr);
+ }
+
+ XFREE(MTYPE_EIGRP_PREFIX_ENTRY, pe2);
}
/*EIGRP REPLY read function*/
-void
-eigrp_reply_receive (struct eigrp *eigrp, struct ip *iph, struct eigrp_header *eigrph,
- struct stream * s, struct eigrp_interface *ei, int size)
+void eigrp_reply_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;
-
- struct access_list *alist;
- struct prefix_list *plist;
- struct access_list *alist_i;
- struct prefix_list *plist_i;
- struct eigrp *e;
-
- u_int16_t type;
-
- /* increment statistics. */
- ei->reply_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 = AF_INET;
- 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);
- /*
- * Destination must exists
- */
- assert(dest);
-
- 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);
-
- /*
- * Filtering
- */
- //TODO: Work in progress
- /* get list from eigrp process */
- e = eigrp_lookup();
- /* Get access-lists and prefix-lists from process and interface */
- alist = e->list[EIGRP_FILTER_IN];
- plist = e->prefix[EIGRP_FILTER_IN];
- alist_i = ei->list[EIGRP_FILTER_IN];
- plist_i = ei->prefix[EIGRP_FILTER_IN];
- /* Check if any list fits */
- if ((alist &&
- access_list_apply (alist, (struct prefix *)&dest_addr) == FILTER_DENY) ||
- (plist &&
- prefix_list_apply (plist, (struct prefix *)&dest_addr) == PREFIX_DENY) ||
- (alist_i &&
- access_list_apply (alist_i, (struct prefix *)&dest_addr) == FILTER_DENY) ||
- (plist_i &&
- prefix_list_apply (plist_i, (struct prefix *)&dest_addr) == PREFIX_DENY))
- {
- tlv->metric.delay = EIGRP_MAX_METRIC;
- }
- /*
- * End of filtering
- */
-
- msg->packet_type = EIGRP_OPC_REPLY;
- 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;
+
+ struct access_list *alist;
+ struct prefix_list *plist;
+ struct access_list *alist_i;
+ struct prefix_list *plist_i;
+ struct eigrp *e;
+
+ u_int16_t type;
+
+ /* increment statistics. */
+ ei->reply_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 = AF_INET;
+ 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);
+ /*
+ * Destination must exists
+ */
+ assert(dest);
+
+ 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);
+
+ /*
+ * Filtering
+ */
+ // TODO: Work in progress
+ /* get list from eigrp process */
+ e = eigrp_lookup();
+ /* Get access-lists and prefix-lists from process and
+ * interface */
+ alist = e->list[EIGRP_FILTER_IN];
+ plist = e->prefix[EIGRP_FILTER_IN];
+ alist_i = ei->list[EIGRP_FILTER_IN];
+ plist_i = ei->prefix[EIGRP_FILTER_IN];
+ /* Check if any list fits */
+ if ((alist
+ && access_list_apply(alist,
+ (struct prefix *)&dest_addr)
+ == FILTER_DENY)
+ || (plist
+ && prefix_list_apply(
+ plist, (struct prefix *)&dest_addr)
+ == PREFIX_DENY)
+ || (alist_i
+ && access_list_apply(
+ alist_i, (struct prefix *)&dest_addr)
+ == FILTER_DENY)
+ || (plist_i
+ && prefix_list_apply(
+ plist_i, (struct prefix *)&dest_addr)
+ == PREFIX_DENY)) {
+ tlv->metric.delay = EIGRP_MAX_METRIC;
+ }
+ /*
+ * End of filtering
+ */
+
+ msg->packet_type = EIGRP_OPC_REPLY;
+ 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);
}
-
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