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MPLS: Handle compatibility with old configs

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Old configs do not define MPLS domains and may use a static protocol
to define static MPLS routes.

When MPLS channel is the only channel of static protocol, handle it
as a main channel. Also, define implicit MPLS domain if needed and
none is defined.
This commit is contained in:
Ondrej Zajicek 2023-10-05 17:54:43 +02:00
parent de09fda5dc
commit ba01a6f2e6
3 changed files with 10 additions and 2 deletions
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6
nest/mpls.Y
View File

@ -99,7 +99,11 @@ mpls_channel_start: MPLS
$$ = this_channel = channel_config_get(&channel_mpls, net_label[NET_MPLS], NET_MPLS, this_proto); $$ = this_channel = channel_config_get(&channel_mpls, net_label[NET_MPLS], NET_MPLS, this_proto);
if (EMPTY_LIST(new_config->mpls_domains)) if (EMPTY_LIST(new_config->mpls_domains))
cf_error("No MPLS domain defined"); {
int counter = 0;
mpls_domain_config_new(cf_default_name(new_config, "mpls%d", &counter));
cf_warn("No MPLS domain defined");
}
/* Default values for new channel */ /* Default values for new channel */
if (!MPLS_CC->domain) if (!MPLS_CC->domain)

2
nest/protocol.h
View File

@ -624,7 +624,7 @@ struct channel_config *proto_cf_find_channel(struct proto_config *p, uint net_ty
static inline struct channel_config *proto_cf_main_channel(struct proto_config *pc) static inline struct channel_config *proto_cf_main_channel(struct proto_config *pc)
{ return proto_cf_find_channel(pc, pc->net_type); } { return proto_cf_find_channel(pc, pc->net_type); }
static inline struct channel_config *proto_cf_mpls_channel(struct proto_config *pc) static inline struct channel_config *proto_cf_mpls_channel(struct proto_config *pc)
{ return proto_cf_find_channel(pc, NET_MPLS); } { return (pc->net_type != NET_MPLS) ? proto_cf_find_channel(pc, NET_MPLS) : NULL; }
struct channel *proto_find_channel_by_table(struct proto *p, struct rtable *t); struct channel *proto_find_channel_by_table(struct proto *p, struct rtable *t);
struct channel *proto_find_channel_by_name(struct proto *p, const char *n); struct channel *proto_find_channel_by_name(struct proto *p, const char *n);

4
proto/static/static.c
View File

@ -472,6 +472,10 @@ static_postconfig(struct proto_config *CF)
struct static_config *cf = (void *) CF; struct static_config *cf = (void *) CF;
struct static_route *r; struct static_route *r;
/* If there is just a MPLS channel, use it as a main channel */
if (!CF->net_type && proto_cf_mpls_channel(CF))
CF->net_type = NET_MPLS;
if (! proto_cf_main_channel(CF)) if (! proto_cf_main_channel(CF))
cf_error("Channel not specified"); cf_error("Channel not specified");