diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ip.c | 24 | ||||
| -rw-r--r-- | lib/route.h | 37 |
2 files changed, 37 insertions, 24 deletions
@@ -85,25 +85,29 @@ ip4_classify(ip4_addr ad) u32 a = _I(ad); u32 b = a >> 24U; - if (b && b <= 0xdf) + if (b < 0xe0) { - if (b == 0x7f) + if (b == 0x00) /* 0.0.0.0/8 This network */ + return IADDR_INVALID; + + if (b == 0x7f) /* 127.0.0.0/8 Loopback address */ return IADDR_HOST | SCOPE_HOST; - else if ((b == 0x0a) || - ((a & 0xffff0000) == 0xc0a80000) || - ((a & 0xfff00000) == 0xac100000)) + + if ((b == 0x0a) || /* 10.0.0.0/8 Private range */ + ((a & 0xffff0000) == 0xc0a80000) || /* 192.168.0.0/16 Private range */ + ((a & 0xfff00000) == 0xac100000)) /* 172.16.0.0/12 Private range */ return IADDR_HOST | SCOPE_SITE; - else - return IADDR_HOST | SCOPE_UNIVERSE; + + return IADDR_HOST | SCOPE_UNIVERSE; } - if (b >= 0xe0 && b <= 0xef) + if (b < 0xf0) /* 224.0.0.0/4 Multicast address */ return IADDR_MULTICAST | SCOPE_UNIVERSE; - if (a == 0xffffffff) + if (a == 0xffffffff) /* 255.255.255.255 Broadcast address */ return IADDR_BROADCAST | SCOPE_LINK; - return IADDR_INVALID; + return IADDR_HOST | SCOPE_SITE; /* 240.0.0.0/4 Reserved / private */ } int diff --git a/lib/route.h b/lib/route.h index 1d8877c8..283a3760 100644 --- a/lib/route.h +++ b/lib/route.h @@ -16,19 +16,21 @@ struct network; struct proto; struct cli; + typedef struct rte { - struct rte *next; - struct network *net; /* Network this RTE belongs to */ - struct rte_src *src; /* Route source that created the route */ - struct channel *sender; /* Channel used to send the route to the routing table */ struct rta *attrs; /* Attributes of this route */ + const net_addr *net; /* Network this RTE belongs to */ + struct rte_src *src; /* Route source that created the route */ + struct rt_import_hook *sender; /* Import hook used to send the route to the routing table */ + btime lastmod; /* Last modified (set by table) */ u32 id; /* Table specific route id */ - byte flags; /* Flags (REF_...) */ + byte flags; /* Table-specific flags */ byte pflags; /* Protocol-specific flags */ - btime lastmod; /* Last modified */ + u8 generation; /* If this route import is based on other previously exported route, + this value should be 1 + MAX(generation of the parent routes). + Otherwise the route is independent and this value is zero. */ } rte; -#define REF_COW 1 /* Copy this rte on write */ #define REF_FILTERED 2 /* Route is rejected by import filter */ #define REF_STALE 4 /* Route is stale in a refresh cycle */ #define REF_DISCARD 8 /* Route is scheduled for discard */ @@ -321,7 +323,7 @@ static inline u32 rt_get_preference(rte *rt) /* IGP metric: second-order comparison */ extern struct ea_class ea_gen_igp_metric; -u32 rt_get_igp_metric(rte *rt); +u32 rt_get_igp_metric(const rte *rt); #define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other protocol-specific metric is availabe */ @@ -331,16 +333,23 @@ extern struct ea_class ea_gen_from; /* Source: An old method to devise the route source protocol and kind. * To be superseded in a near future by something more informative. */ extern struct ea_class ea_gen_source; -static inline u32 rt_get_source_attr(rte *rt) +static inline u32 rt_get_source_attr(const rte *rt) { return ea_get_int(rt->attrs->eattrs, &ea_gen_source, 0); } /* Flowspec validation result */ -#define FLOWSPEC_UNKNOWN 0 -#define FLOWSPEC_VALID 1 -#define FLOWSPEC_INVALID 2 +enum flowspec_valid { + FLOWSPEC_UNKNOWN = 0, + FLOWSPEC_VALID = 1, + FLOWSPEC_INVALID = 2, + FLOWSPEC__MAX, +}; + +extern const char * flowspec_valid_names[FLOWSPEC__MAX]; +static inline const char *flowspec_valid_name(enum flowspec_valid v) +{ return (v < FLOWSPEC__MAX) ? flowspec_valid_names[v] : "???"; } extern struct ea_class ea_gen_flowspec_valid; -static inline u32 rt_get_flowspec_valid(rte *rt) +static inline enum flowspec_valid rt_get_flowspec_valid(rte *rt) { return ea_get_int(rt->attrs->eattrs, &ea_gen_flowspec_valid, FLOWSPEC_UNKNOWN); } /* Next hop: For now, stored as adata */ @@ -402,7 +411,7 @@ static inline int nhea_dest(eattr *nhea) return nhad->dest; } -static inline int rte_dest(rte *r) +static inline int rte_dest(const rte *r) { return nhea_dest(ea_find(r->attrs->eattrs, &ea_gen_nexthop)); } |