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lib: Allow doing match/set tag untagged

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In route-map: `match tag untagged`.

E.g. Cisco/Juniper allows that, but they use `match tag 0` instead.

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2024-05-08 22:25:38 +03:00
parent c143a29b6b
commit e797b137f3
4 changed files with 39 additions and 18 deletions
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2
doc/user/ripngd.rst
View File

@ -136,7 +136,7 @@ functionality.
range is very large for compatibility with other protocols. For RIPng, valid
metric values are from 1 to 16.
.. clicmd:: set tag (1-4294967295)
.. clicmd:: set tag <untagged|(1-4294967295)>
Set a tag on the matched route.

10
doc/user/routemap.rst
View File

@ -176,10 +176,9 @@ Route Map Match Command
Matches the specified `metric`.
.. clicmd:: match tag TAG
.. clicmd:: match tag <untagged|(1-4294967295)>
Matches the specified tag value associated with the route. This tag value
can be in the range of (1-4294967295).
Matches the specified tag (or untagged) value associated with the route.
.. clicmd:: match local-preference METRIC
@ -241,9 +240,10 @@ Route Map Set Command
.. program:: configure
.. clicmd:: set tag TAG
.. clicmd:: set tag <untagged|(1-4294967295)>
Set a tag on the matched route.
Set a tag on the matched route. This tag value can be from (1-4294967295).
Additionally if you have compiled with the :option:`--enable-realms`
configure option. Tag values from (1-255) are sent to the Linux kernel as a
realm value. Then route policy can be applied. See the tc man page. As

43
lib/routemap_cli.c
View File

@ -490,29 +490,33 @@ DEFPY_YANG(
DEFPY_YANG(
match_tag, match_tag_cmd,
"match tag (1-4294967295)$tag",
"match tag <untagged$untagged|(1-4294967295)$tagged>",
MATCH_STR
"Match tag of route\n"
"Untagged route\n"
"Tag value\n")
{
const char *xpath =
"./match-condition[condition='frr-route-map:match-tag']";
char xpath_value[XPATH_MAXLEN];
char value[64];
nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
snprintf(xpath_value, sizeof(xpath_value),
"%s/rmap-match-condition/tag", xpath);
nb_cli_enqueue_change(vty, xpath_value, NB_OP_MODIFY, tag_str);
snprintf(value, sizeof(value), "%lu", tagged ? tagged : 0);
nb_cli_enqueue_change(vty, xpath_value, NB_OP_MODIFY, value);
return nb_cli_apply_changes(vty, NULL);
}
DEFPY_YANG(
no_match_tag, no_match_tag_cmd,
"no match tag [(1-4294967295)]",
"no match tag [<untagged|(1-4294967295)>]",
NO_STR
MATCH_STR
"Match tag of route\n"
"Untagged route\n"
"Tag value\n")
{
const char *xpath =
@ -581,9 +585,15 @@ void route_map_condition_show(struct vty *vty, const struct lyd_node *dnode,
yang_dnode_get_string(dnode,
"./rmap-match-condition/metric"));
} else if (IS_MATCH_TAG(condition)) {
vty_out(vty, " match tag %s\n",
yang_dnode_get_string(dnode,
"./rmap-match-condition/tag"));
uint32_t tag =
strtoul(yang_dnode_get_string(dnode,
"./rmap-match-condition/tag"),
NULL, 10);
if (!tag)
vty_out(vty, " match tag untagged\n");
else
vty_out(vty, " match tag %u\n", tag);
} else if (IS_MATCH_IPv4_PREFIX_LEN(condition)) {
vty_out(vty, " match ip address prefix-len %s\n",
yang_dnode_get_string(
@ -973,28 +983,32 @@ DEFPY_YANG(no_set_max_metric, no_set_max_metric_cmd,
DEFPY_YANG(
set_tag, set_tag_cmd,
"set tag (1-4294967295)$tag",
"set tag <untagged$untagged|(1-4294967295)$tagged>",
SET_STR
"Tag value for routing protocol\n"
"Untagged route\n"
"Tag value\n")
{
const char *xpath = "./set-action[action='frr-route-map:set-tag']";
char xpath_value[XPATH_MAXLEN];
char value[64];
nb_cli_enqueue_change(vty, xpath, NB_OP_CREATE, NULL);
snprintf(xpath_value, sizeof(xpath_value), "%s/rmap-set-action/tag",
xpath);
nb_cli_enqueue_change(vty, xpath_value, NB_OP_MODIFY, tag_str);
snprintf(value, sizeof(value), "%lu", tagged ? tagged : 0);
nb_cli_enqueue_change(vty, xpath_value, NB_OP_MODIFY, value);
return nb_cli_apply_changes(vty, NULL);
}
DEFPY_YANG(
no_set_tag, no_set_tag_cmd,
"no set tag [(1-4294967295)]",
"no set tag [<untagged|(1-4294967295)>]",
NO_STR
SET_STR
"Tag value for routing protocol\n"
"Untagged route\n"
"Tag value\n")
{
const char *xpath = "./set-action[action='frr-route-map:set-tag']";
@ -1101,8 +1115,15 @@ void route_map_action_show(struct vty *vty, const struct lyd_node *dnode,
yang_dnode_get_string(dnode,
"./rmap-set-action/max-metric"));
} else if (IS_SET_TAG(action)) {
vty_out(vty, " set tag %s\n",
yang_dnode_get_string(dnode, "rmap-set-action/tag"));
uint32_t tag =
strtoul(yang_dnode_get_string(dnode,
"rmap-set-action/tag"),
NULL, 10);
if (!tag)
vty_out(vty, " set tag untagged\n");
else
vty_out(vty, " set tag %u\n", tag);
} else if (IS_SET_SR_TE_COLOR(action)) {
vty_out(vty, " set sr-te color %s\n",
yang_dnode_get_string(dnode,

2
yang/frr-route-map.yang
View File

@ -268,7 +268,7 @@ module frr-route-map {
when "derived-from-or-self(../condition, 'match-tag')";
leaf tag {
type uint32 {
range "1..4294967295";
range "0..4294967295";
}
}
}