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Merge pull request #3926 from donaldsharp/improved_debugs_vxlan

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Improved debugs vxlan in zebra
This commit is contained in:
Mark Stapp 2019-03-08 12:02:52 -05:00 committed by GitHub
commit f74ff6e32a
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 91 additions and 38 deletions
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64
zebra/rt_netlink.c
View File

@ -1965,23 +1965,38 @@ static int netlink_macfdb_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
/* The interface should exist. */
ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id),
ndm->ndm_ifindex);
if (!ifp || !ifp->info)
if (!ifp || !ifp->info) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("\t%s without associated interface: %u",
__PRETTY_FUNCTION__, ndm->ndm_ifindex);
return 0;
}
/* The interface should be something we're interested in. */
if (!IS_ZEBRA_IF_BRIDGE_SLAVE(ifp))
if (!IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("\t%s Not interested in %s, not a slave",
__PRETTY_FUNCTION__, ifp->name);
return 0;
}
/* Drop "permanent" entries. */
if (ndm->ndm_state & NUD_PERMANENT)
if (ndm->ndm_state & NUD_PERMANENT) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("\t%s Entry is PERMANENT, dropping",
__PRETTY_FUNCTION__);
return 0;
}
zif = (struct zebra_if *)ifp->info;
if ((br_if = zif->brslave_info.br_if) == NULL) {
zlog_debug("%s family %s IF %s(%u) brIF %u - no bridge master",
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"%s family %s IF %s(%u) brIF %u - no bridge master",
nl_msg_type_to_str(h->nlmsg_type),
nl_family_to_str(ndm->ndm_family), ifp->name,
ndm->ndm_ifindex, zif->brslave_info.bridge_ifindex);
ndm->ndm_ifindex,
zif->brslave_info.bridge_ifindex);
return 0;
}
@ -1990,19 +2005,23 @@ static int netlink_macfdb_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
netlink_parse_rtattr(tb, NDA_MAX, NDA_RTA(ndm), len);
if (!tb[NDA_LLADDR]) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("%s family %s IF %s(%u) brIF %u - no LLADDR",
nl_msg_type_to_str(h->nlmsg_type),
nl_family_to_str(ndm->ndm_family), ifp->name,
ndm->ndm_ifindex, zif->brslave_info.bridge_ifindex);
ndm->ndm_ifindex,
zif->brslave_info.bridge_ifindex);
return 0;
}
if (RTA_PAYLOAD(tb[NDA_LLADDR]) != ETH_ALEN) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"%s family %s IF %s(%u) brIF %u - LLADDR is not MAC, len %lu",
nl_msg_type_to_str(h->nlmsg_type),
nl_family_to_str(ndm->ndm_family), ifp->name,
ndm->ndm_ifindex, zif->brslave_info.bridge_ifindex,
ndm->ndm_ifindex,
zif->brslave_info.bridge_ifindex,
(unsigned long)RTA_PAYLOAD(tb[NDA_LLADDR]));
return 0;
}
@ -2036,8 +2055,12 @@ static int netlink_macfdb_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
prefix_mac2str(&mac, buf, sizeof(buf)),
dst_present ? dst_buf : "");
if (filter_vlan && vid != filter_vlan)
if (filter_vlan && vid != filter_vlan) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("\tFiltered due to filter vlan: %d",
filter_vlan);
return 0;
}
/* If add or update, do accordingly if learnt on a "local" interface; if
* the notification is over VxLAN, this has to be related to
@ -2045,10 +2068,6 @@ static int netlink_macfdb_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
* so perform an implicit delete of any local entry (if it exists).
*/
if (h->nlmsg_type == RTM_NEWNEIGH) {
/* Drop "permanent" entries. */
if (ndm->ndm_state & NUD_PERMANENT)
return 0;
if (IS_ZEBRA_IF_VXLAN(ifp))
return zebra_vxlan_check_del_local_mac(ifp, br_if, &mac,
vid);
@ -2065,8 +2084,11 @@ static int netlink_macfdb_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
* Ignore the notification from VxLan driver as it is also generated
* when mac moves from remote to local.
*/
if (dst_present)
if (dst_present) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug("\tNo Destination Present");
return 0;
}
if (IS_ZEBRA_IF_VXLAN(ifp))
return zebra_vxlan_check_readd_remote_mac(ifp, br_if, &mac,
@ -2379,6 +2401,9 @@ static int netlink_ipneigh_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
/* if kernel deletes our rfc5549 neighbor entry, re-install it */
if (h->nlmsg_type == RTM_DELNEIGH && (ndm->ndm_state & NUD_PERMANENT)) {
netlink_handle_5549(ndm, zif, ifp, &ip);
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"\tNeighbor Entry Received is a 5549 entry, finished");
return 0;
}
@ -2404,17 +2429,24 @@ static int netlink_ipneigh_change(struct nlmsghdr *h, int len, ns_id_t ns_id)
return 0;
} else if (IS_ZEBRA_IF_BRIDGE(ifp))
link_if = ifp;
else
else {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"\tNeighbor Entry received is not on a VLAN or a BRIDGE, ignoring");
return 0;
}
memset(&mac, 0, sizeof(struct ethaddr));
if (h->nlmsg_type == RTM_NEWNEIGH) {
if (tb[NDA_LLADDR]) {
if (RTA_PAYLOAD(tb[NDA_LLADDR]) != ETH_ALEN) {
if (IS_ZEBRA_DEBUG_KERNEL)
zlog_debug(
"%s family %s IF %s(%u) - LLADDR is not MAC, len %lu",
nl_msg_type_to_str(h->nlmsg_type),
nl_family_to_str(ndm->ndm_family),
nl_msg_type_to_str(
h->nlmsg_type),
nl_family_to_str(
ndm->ndm_family),
ifp->name, ndm->ndm_ifindex,
(unsigned long)RTA_PAYLOAD(
tb[NDA_LLADDR]));

31
zebra/zebra_vxlan.c
View File

@ -2986,8 +2986,12 @@ static int zvni_local_neigh_update(zebra_vni_t *zvni,
}
zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
if (!zvrf)
if (!zvrf) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug("\tUnable to find vrf for: %d",
zvni->vxlan_if->vrf_id);
return -1;
}
/* Check if the neighbor exists. */
n = zvni_neigh_lookup(zvni, ip);
@ -3017,6 +3021,9 @@ static int zvni_local_neigh_update(zebra_vni_t *zvni,
cur_is_router = !!CHECK_FLAG(n->flags,
ZEBRA_NEIGH_ROUTER_FLAG);
if (!mac_different && is_router == cur_is_router) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"\tIgnoring entry mac is the same and is_router == cur_is_router");
n->ifindex = ifp->ifindex;
return 0;
}
@ -3045,6 +3052,11 @@ static int zvni_local_neigh_update(zebra_vni_t *zvni,
return zvni_neigh_send_add_to_client(
zvni->vni, ip, macaddr,
n->flags, n->loc_seq);
else {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"\tNeighbor active and frozen");
}
return 0;
}
@ -3185,6 +3197,10 @@ static int zvni_local_neigh_update(zebra_vni_t *zvni,
if (!neigh_on_hold)
return zvni_neigh_send_add_to_client(zvni->vni, ip, macaddr,
n->flags, n->loc_seq);
else {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug("\tNeighbor on hold not sending");
}
return 0;
}
@ -7579,7 +7595,7 @@ int zebra_vxlan_local_mac_add_update(struct interface *ifp,
if (!zvni) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"Add/Update %sMAC %s intf %s(%u) VID %u, could not find VNI",
"\tAdd/Update %sMAC %s intf %s(%u) VID %u, could not find VNI",
sticky ? "sticky " : "",
prefix_mac2str(macaddr, buf, sizeof(buf)),
ifp->name, ifp->ifindex, vid);
@ -7587,15 +7603,20 @@ int zebra_vxlan_local_mac_add_update(struct interface *ifp,
}
if (!zvni->vxlan_if) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"VNI %u hash %p doesn't have intf upon local MAC ADD",
"\tVNI %u hash %p doesn't have intf upon local MAC ADD",
zvni->vni, zvni);
return -1;
}
zvrf = vrf_info_lookup(zvni->vxlan_if->vrf_id);
if (!zvrf)
if (!zvrf) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug("\tNo Vrf found for vrf_id: %d",
zvni->vxlan_if->vrf_id);
return -1;
}
/* Check if we need to create or update or it is a NO-OP. */
mac = zvni_mac_lookup(zvni, macaddr);
@ -7645,7 +7666,7 @@ int zebra_vxlan_local_mac_add_update(struct interface *ifp,
&& mac->fwd_info.local.vid == vid) {
if (IS_ZEBRA_DEBUG_VXLAN)
zlog_debug(
"Add/Update %sMAC %s intf %s(%u) VID %u -> VNI %u, "
"\tAdd/Update %sMAC %s intf %s(%u) VID %u -> VNI %u, "
"entry exists and has not changed ",
sticky ? "sticky " : "",
prefix_mac2str(macaddr, buf,