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zebra: add logging for NHG ignoring in netlink

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Add some logging for when we choose to ignore a NHG install
for one reason or another. Also, cleanup some of the code
using the same accessor functions for the context object.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
This commit is contained in:
Stephen Worley 2020-05-28 13:22:18 -04:00
parent b36bedd2c3
commit 72938edfbc
1 changed files with 24 additions and 15 deletions
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39
zebra/rt_netlink.c
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@ -2100,16 +2100,35 @@ ssize_t netlink_nexthop_msg_encode(uint16_t cmd,
mpls_lse_t out_lse[MPLS_MAX_LABELS];
char label_buf[256];
int num_labels = 0;
uint32_t id = dplane_ctx_get_nhe_id(ctx);
int type = dplane_ctx_get_nhe_type(ctx);
if (!id) {
flog_err(
EC_ZEBRA_NHG_FIB_UPDATE,
"Failed trying to update a nexthop group in the kernel that does not have an ID");
return -1;
}
/*
* Nothing to do if the kernel doesn't support nexthop objects or
* we dont want to install this type of NHG
*/
if (!kernel_nexthops_supported()
|| (proto_nexthops_only()
&& !is_proto_nhg(dplane_ctx_get_nhe_id(ctx),
dplane_ctx_get_nhe_type(ctx))))
if (!kernel_nexthops_supported()) {
if (IS_ZEBRA_DEBUG_KERNEL || IS_ZEBRA_DEBUG_NHG)
zlog_debug(
"%s: nhg_id %u (%s): kernel nexthops not supported, ignoring",
__func__, id, zebra_route_string(type));
return 0;
}
if (proto_nexthops_only() && !is_proto_nhg(id, type)) {
if (IS_ZEBRA_DEBUG_KERNEL || IS_ZEBRA_DEBUG_NHG)
zlog_debug(
"%s: nhg_id %u (%s): proto-based nexthops only, ignoring",
__func__, id, zebra_route_string(type));
return 0;
}
label_buf[0] = '\0';
@ -2130,15 +2149,6 @@ ssize_t netlink_nexthop_msg_encode(uint16_t cmd,
req->nhm.nh_family = AF_UNSPEC;
/* TODO: Scope? */
uint32_t id = dplane_ctx_get_nhe_id(ctx);
if (!id) {
flog_err(
EC_ZEBRA_NHG_FIB_UPDATE,
"Failed trying to update a nexthop group in the kernel that does not have an ID");
return -1;
}
if (!nl_attr_put32(&req->n, buflen, NHA_ID, id))
return 0;
@ -2259,8 +2269,7 @@ nexthop_done:
nh->vrf_id, label_buf);
}
req->nhm.nh_protocol =
zebra2proto(dplane_ctx_get_nhe_type(ctx));
req->nhm.nh_protocol = zebra2proto(type);
} else if (cmd != RTM_DELNEXTHOP) {
flog_err(