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Implements show route noexport option.

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Shows routes that would be exported to the protocol but are rejected by
the export filter.
This commit is contained in:
Ondrej Zajicek 2014-10-02 12:46:26 +02:00
parent 1123e70740
commit 7aa809016e
4 changed files with 32 additions and 15 deletions
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13
doc/bird.sgml
View file

@ -735,7 +735,7 @@ This argument can be omitted if there exists only a single instance.
Show the list of symbols defined in the configuration (names of
protocols, routing tables etc.).
<tag>show route [[for] <m/prefix/|<m/IP/] [table <m/sym/] [filter <m/f/|where <m/c/] [(export|preexport) <m/p/] [protocol <m/p/] [<m/options/]</tag>
<tag>show route [[for] <m/prefix/|<m/IP/] [table <m/sym/] [filter <m/f/|where <m/c/] [(export|preexport|noexport) <m/p/] [protocol <m/p/] [<m/options/]</tag>
Show contents of a routing table (by default of the main one or the
table attached to a respective protocol), that is routes, their metrics
and (in case the <cf/all/ switch is given) all their attributes.
@ -750,9 +750,14 @@ This argument can be omitted if there exists only a single instance.
<p>You can also ask for printing only routes processed and accepted by
a given filter (<cf>filter <m/name/</cf> or <cf>filter { <m/filter/ }
</cf> or matching a given condition (<cf>where <m/condition/</cf>).
The <cf/export/ and <cf/preexport/ switches ask for printing of entries
that are exported to the specified protocol. With <cf/preexport/, the
export filter of the protocol is skipped.
The <cf/export/, <cf/preexport/ and <cf/noexport/ switches ask for
printing of routes that are exported to the specified protocol.
With <cf/preexport/, the export filter of the protocol is skipped.
With <cf/noexport/, routes rejected by the export filter are printed
instead. Note that routes not exported to the protocol for other reasons
(e.g. secondary routes or routes imported from that protocol) are not
printed even with <cf/noexport/.
<p>You can also select just routes added by a specific protocol.
<cf>protocol <m/p/</cf>.

17
nest/config.Y
View file

@ -57,10 +57,10 @@ CF_KEYWORDS(ROUTER, ID, PROTOCOL, TEMPLATE, PREFERENCE, DISABLED, DEBUG, ALL, OF
CF_KEYWORDS(INTERFACE, IMPORT, EXPORT, FILTER, NONE, TABLE, STATES, ROUTES, FILTERS)
CF_KEYWORDS(RECEIVE, LIMIT, ACTION, WARN, BLOCK, RESTART, DISABLE, KEEP, FILTERED)
CF_KEYWORDS(PASSWORD, FROM, PASSIVE, TO, ID, EVENTS, PACKETS, PROTOCOLS, INTERFACES)
CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, COMMANDS, PREEXPORT, GENERATE, ROA, MAX, FLUSH, AS)
CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, COMMANDS, PREEXPORT, NOEXPORT, GENERATE, ROA)
CF_KEYWORDS(LISTEN, BGP, V6ONLY, DUAL, ADDRESS, PORT, PASSWORDS, DESCRIPTION, SORTED)
CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, IGP_METRIC, CLASS, DSCP)
CF_KEYWORDS(GRACEFUL, RESTART, WAIT)
CF_KEYWORDS(GRACEFUL, RESTART, WAIT, MAX, FLUSH, AS)
CF_ENUM(T_ENUM_RTS, RTS_, DUMMY, STATIC, INHERIT, DEVICE, STATIC_DEVICE, REDIRECT,
RIP, OSPF, OSPF_IA, OSPF_EXT1, OSPF_EXT2, BGP, PIPE)
@ -77,7 +77,7 @@ CF_ENUM(T_ENUM_ROA, ROA_, UNKNOWN, VALID, INVALID)
%type <ro> roa_args
%type <rot> roa_table_arg
%type <sd> sym_args
%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_or_preexport roa_mode limit_action tab_sorted tos
%type <i> proto_start echo_mask echo_size debug_mask debug_list debug_flag mrtdump_mask mrtdump_list mrtdump_flag export_mode roa_mode limit_action tab_sorted tos
%type <ps> proto_patt proto_patt2
%type <g> limit_spec
@ -443,7 +443,7 @@ CF_CLI(SHOW INTERFACES SUMMARY,,, [[Show summary of network interfaces]])
{ if_show_summary(); } ;
CF_CLI_HELP(SHOW ROUTE, ..., [[Show routing table]])
CF_CLI(SHOW ROUTE, r_args, [[[<prefix>|for <prefix>|for <ip>] [table <t>] [filter <f>|where <cond>] [all] [primary] [filtered] [(export|preexport) <p>] [protocol <p>] [stats|count]]], [[Show routing table]])
CF_CLI(SHOW ROUTE, r_args, [[[<prefix>|for <prefix>|for <ip>] [table <t>] [filter <f>|where <cond>] [all] [primary] [filtered] [(export|preexport|noexport) <p>] [protocol <p>] [stats|count]]], [[Show routing table]])
{ rt_show($3); } ;
r_args:
@ -492,7 +492,7 @@ r_args:
$$ = $1;
$$->filtered = 1;
}
| r_args export_or_preexport SYM {
| r_args export_mode SYM {
struct proto_config *c = (struct proto_config *) $3->def;
$$ = $1;
if ($$->export_mode) cf_error("Protocol specified twice");
@ -519,9 +519,10 @@ r_args:
}
;
export_or_preexport:
PREEXPORT { $$ = 1; }
| EXPORT { $$ = 2; }
export_mode:
PREEXPORT { $$ = RSEM_PREEXPORT; }
| EXPORT { $$ = RSEM_EXPORT; }
| NOEXPORT { $$ = RSEM_NOEXPORT; }
;

6
nest/route.h
View file

@ -301,6 +301,12 @@ struct rt_show_data {
};
void rt_show(struct rt_show_data *);
/* Value of export_mode in struct rt_show_data */
#define RSEM_NONE 0 /* Export mode not used */
#define RSEM_PREEXPORT 1 /* Routes ready for export, before filtering */
#define RSEM_EXPORT 2 /* Routes accepted by export filter */
#define RSEM_NOEXPORT 3 /* Routes rejected by export filter */
/*
* Route Attributes
*

11
nest/rt-table.c
View file

@ -2255,6 +2255,9 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
if (d->export_mode)
{
if (! d->export_protocol->rt_notify)
return;
a = proto_find_announce_hook(d->export_protocol, d->table);
if (!a)
return;
@ -2287,18 +2290,20 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
if (ic < 0)
goto skip;
if (d->export_mode > 1)
if (d->export_mode > RSEM_PREEXPORT)
{
/*
* FIXME - This shows what should be exported according to current
* filters, but not what was really exported. 'configure soft'
* command may change the export filter and do not update routes.
*/
int do_export = (ic > 0) ||
(f_run(a->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) <= F_ACCEPT);
if (!ic && (f_run(a->out_filter, &e, &tmpa, rte_update_pool, FF_FORCE_TMPATTR) > F_ACCEPT))
if (do_export != (d->export_mode == RSEM_EXPORT))
goto skip;
if (ep->accept_ra_types == RA_ACCEPTED)
if ((d->export_mode == RSEM_EXPORT) && (ep->accept_ra_types == RA_ACCEPTED))
pass = 1;
}
}