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lib: add command to test prefix-list match
While we do have `show ip prefix-list NAME A.B.C.D/M`, that doesn't actually run the prefix list matching code. While the result would hopefully be the same anyway, let's have a way to call the actual prefix list match code and get a result. (As an aside, this might be useful for scripting to do a quick "is this prefix in that prefix list" check.) Signed-off-by: David Lamparter <equinox@diac24.net>
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@ -137,6 +137,15 @@ Showing ip prefix-list
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.. clicmd:: show ip prefix-list detail
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.. clicmd:: show ip prefix-list detail NAME
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.. clicmd:: debug prefix-list NAME match <A.B.C.D/M|X:X::X:X/M> [address-mode]
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Execute the prefix list matching code for the specified list and prefix.
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Shows which entry matched, if any. (``address-mode`` is used for
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PIM RP lookups and skips prefix length checks.)
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The return value from this command is success only if the prefix-list
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result is to permit the prefix, so the command can be used in scripting.
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Clear counter of ip prefix-list
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-------------------------------
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46
lib/plist.c
46
lib/plist.c
@ -1300,6 +1300,51 @@ DEFPY (clear_ipv6_prefix_list,
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return vty_clear_prefix_list(vty, AFI_IP6, prefix_list, prefix_str);
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}
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DEFPY (debug_prefix_list_match,
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debug_prefix_list_match_cmd,
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"debug prefix-list WORD$prefix-list match <A.B.C.D/M|X:X::X:X/M>"
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" [address-mode$addr_mode]",
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DEBUG_STR
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"Prefix-list test access\n"
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"Name of a prefix list\n"
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"Test prefix for prefix list result\n"
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"Prefix to test in ip prefix-list\n"
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"Prefix to test in ipv6 prefix-list\n"
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"Use address matching mode (PIM RP)\n")
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{
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struct prefix_list *plist;
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const struct prefix_list_entry *entry = NULL;
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enum prefix_list_type ret;
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plist = prefix_list_lookup(family2afi(match->family), prefix_list);
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if (!plist) {
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vty_out(vty, "%% no prefix list named %s for AFI %s\n",
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prefix_list, afi2str(family2afi(match->family)));
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return CMD_WARNING;
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}
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ret = prefix_list_apply_ext(plist, &entry, match, !!addr_mode);
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vty_out(vty, "%s prefix list %s yields %s for %pFX, ",
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afi2str(family2afi(match->family)), prefix_list,
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ret == PREFIX_DENY ? "DENY" : "PERMIT", match);
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if (!entry)
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vty_out(vty, "no match found\n");
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else {
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vty_out(vty, "matching entry #%"PRId64": %pFX", entry->seq,
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&entry->prefix);
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if (entry->ge)
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vty_out(vty, " ge %d", entry->ge);
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if (entry->le)
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vty_out(vty, " le %d", entry->le);
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vty_out(vty, "\n");
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}
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/* allow using this in scripts for quick prefix-list member tests */
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return (ret == PREFIX_PERMIT) ? CMD_SUCCESS : CMD_WARNING;
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}
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struct stream *prefix_bgp_orf_entry(struct stream *s, struct prefix_list *plist,
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uint8_t init_flag, uint8_t permit_flag,
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uint8_t deny_flag)
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@ -1541,6 +1586,7 @@ static void prefix_list_init_ipv6(void)
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install_element(VIEW_NODE, &show_ipv6_prefix_list_prefix_cmd);
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install_element(VIEW_NODE, &show_ipv6_prefix_list_summary_cmd);
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install_element(VIEW_NODE, &show_ipv6_prefix_list_detail_cmd);
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install_element(VIEW_NODE, &debug_prefix_list_match_cmd);
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install_element(ENABLE_NODE, &clear_ipv6_prefix_list_cmd);
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}
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