diff options
author | Denis Ovsienko <infrastation@yandex.ru> | 2011-10-23 22:32:44 +0400 |
---|---|---|
committer | Denis Ovsienko <infrastation@yandex.ru> | 2011-11-21 18:33:07 +0400 |
commit | 26f5e782ef43dbe4496d795d70c490b42da31c6a (patch) | |
tree | 546494bc51d11176c23acfaae4cf624c7be369fd /bgpd/bgp_attr.c | |
parent | 5c8d16fd853c29856e45709424701c93ef626f2f (diff) |
bgpd: rewrite attr flag error logging
* bgp_attr.c
* attr_flag_str: new message list
* bgp_attr_flags_diagnose(): new function, implements previously added
error logging in a generic way
* bgp_attr_origin(): use bgp_attr_flags_diagnose()
* bgp_attr_nexthop(): ditto
* bgp_attr_med(): ditto
* bgp_attr_local_pref(): ditto
* bgp_attr_atomic(): ditto
* bgp_attr_originator_id(): ditto
* bgp_attr_cluster_list(): ditto
* bgp_mp_reach_parse(): ditto
* bgp_mp_unreach_parse(): ditto
Diffstat (limited to 'bgpd/bgp_attr.c')
-rw-r--r-- | bgpd/bgp_attr.c | 108 |
1 files changed, 54 insertions, 54 deletions
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c index 7c94f7e0..829b0176 100644 --- a/bgpd/bgp_attr.c +++ b/bgpd/bgp_attr.c @@ -62,6 +62,17 @@ static const struct message attr_str [] = { BGP_ATTR_AS_PATHLIMIT, "AS_PATHLIMIT" }, }; static const int attr_str_max = sizeof(attr_str)/sizeof(attr_str[0]); + +static const struct message attr_flag_str[] = +{ + { BGP_ATTR_FLAG_OPTIONAL, "Optional" }, + { BGP_ATTR_FLAG_TRANS, "Transitive" }, + { BGP_ATTR_FLAG_PARTIAL, "Partial" }, + /* bgp_attr_flags_diagnose() relies on this bit being last in this list */ + { BGP_ATTR_FLAG_EXTLEN, "Extended Length" }, +}; +static const size_t attr_flag_str_max = + sizeof (attr_flag_str) / sizeof (attr_flag_str[0]); static struct hash *cluster_hash; @@ -697,6 +708,40 @@ bgp_attr_flush (struct attr *attr) } } +/* Find out what is wrong with the path attribute flag bits and log the error. + "Flag bits" here stand for Optional, Transitive and Partial, but not for + Extended Length. Checking O/T/P bits at once implies, that the attribute + being diagnosed is defined by RFC as either a "well-known" or an "optional, + non-transitive" attribute. */ +static void +bgp_attr_flags_diagnose +( + struct peer * peer, + const u_int8_t attr_code, + u_int8_t desired_flags, /* how RFC says it must be */ + u_int8_t real_flags /* on wire */ +) +{ + u_char seen = 0, i; + + desired_flags &= ~BGP_ATTR_FLAG_EXTLEN; + real_flags &= ~BGP_ATTR_FLAG_EXTLEN; + for (i = 0; i <= 2; i++) /* O,T,P, but not E */ + if + ( + CHECK_FLAG (desired_flags, attr_flag_str[i].key) != + CHECK_FLAG (real_flags, attr_flag_str[i].key) + ) + { + zlog (peer->log, LOG_ERR, "%s attribute must%s be flagged as \"%s\"", + LOOKUP (attr_str, attr_code), + CHECK_FLAG (desired_flags, attr_flag_str[i].key) ? "" : " not", + attr_flag_str[i].str); + seen = 1; + } + assert (seen); +} + /* Get origin attribute of the update message. */ static int bgp_attr_origin (struct peer *peer, bgp_size_t length, @@ -714,12 +759,7 @@ bgp_attr_origin (struct peer *peer, bgp_size_t length, attribute (type, length and value). */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_TRANS) { - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "ORIGIN attribute must not be flagged as \"optional\" (%u)", flag); - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "ORIGIN attribute must be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "ORIGIN attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_ORIGIN, BGP_ATTR_FLAG_TRANS, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -917,12 +957,7 @@ bgp_attr_nexthop (struct peer *peer, bgp_size_t length, /* Flags check. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_TRANS) { - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "NEXT_HOP attribute must not be flagged as \"optional\" (%u)", flag); - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "NEXT_HOP attribute must be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "NEXT_HOP attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_NEXT_HOP, BGP_ATTR_FLAG_TRANS, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -977,12 +1012,7 @@ bgp_attr_med (struct peer *peer, bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_OPTIONAL) { - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "MULTI_EXIT_DISC attribute must be flagged as \"optional\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "MULTI_EXIT_DISC attribute must not be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "MULTI_EXIT_DISC attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_MULTI_EXIT_DISC, BGP_ATTR_FLAG_OPTIONAL, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1018,12 +1048,7 @@ bgp_attr_local_pref (struct peer *peer, bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_TRANS) { - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "LOCAL_PREF attribute must not be flagged as \"optional\" (%u)", flag); - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "LOCAL_PREF attribute must be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "LOCAL_PREF attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_LOCAL_PREF, BGP_ATTR_FLAG_TRANS, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1066,12 +1091,7 @@ bgp_attr_atomic (struct peer *peer, bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_TRANS) { - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "ATOMIC_AGGREGATE attribute must not be flagged as \"optional\" (%u)", flag); - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "ATOMIC_AGGREGATE attribute must be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "ATOMIC_AGGREGATE attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_ATOMIC_AGGREGATE, BGP_ATTR_FLAG_TRANS, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1325,12 +1345,7 @@ bgp_attr_originator_id (struct peer *peer, bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_OPTIONAL) { - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "ORIGINATOR_ID attribute must be flagged as \"optional\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "ORIGINATOR_ID attribute must not be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "ORIGINATOR_ID attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_ORIGINATOR_ID, BGP_ATTR_FLAG_OPTIONAL, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1364,12 +1379,7 @@ bgp_attr_cluster_list (struct peer *peer, bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_OPTIONAL) { - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "CLUSTER_LIST attribute must be flagged as \"optional\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "CLUSTER_LIST attribute must not be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "CLUSTER_LIST attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_CLUSTER_LIST, BGP_ATTR_FLAG_OPTIONAL, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1412,12 +1422,7 @@ bgp_mp_reach_parse (struct peer *peer, const bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_OPTIONAL) { - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "MP_REACH_NLRI attribute must be flagged as \"optional\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "MP_REACH_NLRI attribute must not be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "MP_REACH_NLRI attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_MP_REACH_NLRI, BGP_ATTR_FLAG_OPTIONAL, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } @@ -1559,12 +1564,7 @@ bgp_mp_unreach_parse (struct peer *peer, const bgp_size_t length, /* Flag checks. */ if ((flag & ~BGP_ATTR_FLAG_EXTLEN) != BGP_ATTR_FLAG_OPTIONAL) { - if (! CHECK_FLAG (flag, BGP_ATTR_FLAG_OPTIONAL)) - zlog (peer->log, LOG_ERR, "MP_UNREACH_NLRI attribute must be flagged as \"optional\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_TRANS)) - zlog (peer->log, LOG_ERR, "MP_UNREACH_NLRI attribute must not be flagged as \"transitive\" (%u)", flag); - if (CHECK_FLAG (flag, BGP_ATTR_FLAG_PARTIAL)) - zlog (peer->log, LOG_ERR, "MP_UNREACH_NLRI attribute must not be flagged as \"partial\" (%u)", flag); + bgp_attr_flags_diagnose (peer, BGP_ATTR_MP_UNREACH_NLRI, BGP_ATTR_FLAG_OPTIONAL, flag); bgp_notify_send_with_data (peer, BGP_NOTIFY_UPDATE_ERR, BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR, startp, total); return -1; } |