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BFD: Better handling of BFD options in BGP configs

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Merge multiple BFD option blocks in BGP configs instead of using the last
one. That is necessary for proper handling of templates when BFD options
are used both in a BGP template and in a BGP protocol derived from that
template.
This commit is contained in:
Ondrej Zajicek (work) 2020-11-12 04:02:38 +01:00
parent 99ad208dd7
commit 3b56bf8849
4 changed files with 27 additions and 7 deletions
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1
conf/confbase.Y
View file

@ -79,7 +79,6 @@ CF_DECLS
struct f_trie *trie;
struct f_val v;
struct password_item *p;
struct bfd_options *bo;
struct rt_show_data *ra;
struct sym_show_data *sd;
struct lsadb_show_data *ld;

25
nest/config.Y
View file

@ -52,6 +52,28 @@ get_passwords(void)
return rv;
}
static inline void
init_bfd_opts(struct bfd_options **opts)
{
cf_check_bfd(1);
if (! *opts)
*opts = bfd_new_options();
}
static inline void
open_bfd_opts(struct bfd_options **opts)
{
init_bfd_opts(opts);
this_bfd_opts = *opts;
}
static inline void
close_bfd_opts(void)
{
this_bfd_opts = NULL;
}
static void
proto_postconfig(void)
{
@ -99,7 +121,6 @@ CF_ENUM_PX(T_ENUM_AF, AF_, AFI_, IPV4, IPV6)
%type <ps> proto_patt proto_patt2
%type <cc> channel_start proto_channel
%type <cl> limit_spec
%type <bo> bfd_opts
%type <net> r_args_for_val
%type <net_ptr> r_args_for
%type <t> r_args_channel
@ -519,7 +540,7 @@ bfd_items:
;
bfd_opts:
'{' { this_bfd_opts = bfd_new_options(); } bfd_items '}' { $$ = this_bfd_opts; this_bfd_opts = NULL; }
'{' bfd_items '}'
;
/* Core commands */

2
proto/bgp/bgp.h
View file

@ -130,7 +130,7 @@ struct bgp_config {
const char *dynamic_name; /* Name pattern for dynamic BGP */
int dynamic_name_digits; /* Minimum number of digits for dynamic names */
int check_link; /* Use iface link state for liveness detection */
const struct bfd_options *bfd; /* Use BFD for liveness detection */
struct bfd_options *bfd; /* Use BFD for liveness detection */
};
struct bgp_channel_config {

6
proto/bgp/config.Y
View file

@ -190,9 +190,9 @@ bgp_proto:
| bgp_proto LONG LIVED STALE TIME expr ';' { BGP_CFG->llgr_time = $6; }
| bgp_proto TTL SECURITY bool ';' { BGP_CFG->ttl_security = $4; }
| bgp_proto CHECK LINK bool ';' { BGP_CFG->check_link = $4; }
| bgp_proto BFD bool ';' { cf_check_bfd($3); BGP_CFG->bfd = $3 ? bfd_new_options() : NULL; }
| bgp_proto BFD GRACEFUL ';' { cf_check_bfd(1); struct bfd_options *opts = bfd_new_options(); opts->mode = BGP_BFD_GRACEFUL; BGP_CFG->bfd = opts; }
| bgp_proto BFD bfd_opts ';' { BGP_CFG->bfd = $3; cf_check_bfd(1); }
| bgp_proto BFD bool ';' { if ($3) init_bfd_opts(&BGP_CFG->bfd); else BGP_CFG->bfd = NULL; }
| bgp_proto BFD GRACEFUL ';' { init_bfd_opts(&BGP_CFG->bfd); BGP_CFG->bfd->mode = BGP_BFD_GRACEFUL; }
| bgp_proto BFD { open_bfd_opts(&BGP_CFG->bfd); } bfd_opts { close_bfd_opts(); } ';'
| bgp_proto ENFORCE FIRST AS bool ';' { BGP_CFG->enforce_first_as = $5; }
;