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pimd: Add debug logs to help find problems with stream_read

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Logs only. No functional change
Ticket: CM-13852

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
This commit is contained in:
anuradhak 2016-12-02 13:41:11 -08:00 committed by Donald Sharp
parent 06d1c450f3
commit 489e06bbcf
1 changed files with 19 additions and 2 deletions
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21
pimd/pim_msdp_packet.c
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@ -586,16 +586,26 @@ pim_msdp_read_packet(struct pim_msdp_peer *mp)
{
int nbytes;
int readsize;
int old_endp;
int new_endp;
readsize = mp->packet_size - stream_get_endp(mp->ibuf);
old_endp = stream_get_endp(mp->ibuf);
readsize = mp->packet_size - old_endp;
if (!readsize) {
return 0;
}
/* Read packet from fd */
nbytes = stream_read_try(mp->ibuf, mp->fd, readsize);
new_endp = stream_get_endp(mp->ibuf);
if (nbytes < 0) {
if (PIM_DEBUG_MSDP_INTERNAL) {
zlog_debug("MSDP peer %s read failed %d", mp->key_str, nbytes);
}
if (nbytes == -2) {
if (PIM_DEBUG_MSDP_INTERNAL) {
zlog_debug("MSDP peer %s pim_msdp_read io retry old_end: %d new_end: %d", mp->key_str, old_endp, new_endp);
}
/* transient error retry */
return -1;
}
@ -604,13 +614,20 @@ pim_msdp_read_packet(struct pim_msdp_peer *mp)
}
if (!nbytes) {
if (PIM_DEBUG_MSDP_INTERNAL) {
zlog_debug("MSDP peer %s read failed %d", mp->key_str, nbytes);
}
pim_msdp_peer_reset_tcp_conn(mp, "peer-down");
return -1;
}
/* We read partial packet. */
if (stream_get_endp(mp->ibuf) != mp->packet_size)
if (stream_get_endp(mp->ibuf) != mp->packet_size) {
if (PIM_DEBUG_MSDP_INTERNAL) {
zlog_debug("MSDP peer %s read partial len %d old_endp %d new_endp %d", mp->key_str, mp->packet_size, old_endp, new_endp);
}
return -1;
}
return 0;
}