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eigrpd: Only put 1 packet at a time on send queue

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When we have received an ack for the last reliable
packet we must only put 1 packet onto the send
queue.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2017-08-18 14:57:37 -04:00
parent f887261b92
commit 1a0770e387
1 changed files with 19 additions and 24 deletions
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27
eigrpd/eigrp_packet.c
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@ -628,22 +628,21 @@ int eigrp_read(struct thread *thread)
/* New testing block of code for handling Acks */ /* New testing block of code for handling Acks */
if (ntohl(eigrph->ack) != 0) { if (ntohl(eigrph->ack) != 0) {
struct eigrp_packet *ep = NULL;
nbr = eigrp_nbr_get(ei, eigrph, iph); nbr = eigrp_nbr_get(ei, eigrph, iph);
/* neighbor must be valid, eigrp_nbr_get creates if none existed // neighbor must be valid, eigrp_nbr_get creates if none existed
*/
assert(nbr); assert(nbr);
struct eigrp_packet *ep;
ep = eigrp_fifo_next(nbr->retrans_queue); ep = eigrp_fifo_next(nbr->retrans_queue);
if (ep) { if ((ep) && (ntohl(eigrph->ack) == ep->sequence_number)) {
if (ntohl(eigrph->ack) == ep->sequence_number) { ep = eigrp_fifo_pop(nbr->retrans_queue);
eigrp_packet_free(ep);
if ((nbr->state == EIGRP_NEIGHBOR_PENDING) if ((nbr->state == EIGRP_NEIGHBOR_PENDING)
&& (ntohl(eigrph->ack) && (ntohl(eigrph->ack) == nbr->init_sequence_number)) {
== nbr->init_sequence_number)) { eigrp_nbr_state_set(nbr, EIGRP_NEIGHBOR_UP);
eigrp_nbr_state_set(nbr,
EIGRP_NEIGHBOR_UP);
zlog_info("Neighbor(%s) adjacency became full", zlog_info("Neighbor(%s) adjacency became full",
inet_ntoa(nbr->src)); inet_ntoa(nbr->src));
nbr->init_sequence_number = 0; nbr->init_sequence_number = 0;
@ -651,13 +650,9 @@ int eigrp_read(struct thread *thread)
ntohl(eigrph->sequence); ntohl(eigrph->sequence);
eigrp_update_send_EOT(nbr); eigrp_update_send_EOT(nbr);
} }
ep = eigrp_fifo_pop(nbr->retrans_queue); else
eigrp_packet_free(ep);
if (nbr->retrans_queue->count > 0) {
eigrp_send_packet_reliably(nbr); eigrp_send_packet_reliably(nbr);
} }
}
}
ep = eigrp_fifo_next(nbr->multicast_queue); ep = eigrp_fifo_next(nbr->multicast_queue);
if (ep) { if (ep) {
if (ntohl(eigrph->ack) == ep->sequence_number) { if (ntohl(eigrph->ack) == ep->sequence_number) {
@ -1073,7 +1068,7 @@ int eigrp_unack_multicast_packet_retrans(struct thread *thread)
/* Get packet from tail of fifo. */ /* Get packet from tail of fifo. */
struct eigrp_packet *eigrp_fifo_pop(struct eigrp_fifo *fifo) struct eigrp_packet *eigrp_fifo_pop(struct eigrp_fifo *fifo)
{ {
struct eigrp_packet *ep; struct eigrp_packet *ep = NULL;
ep = fifo->tail; ep = fifo->tail;