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sys/net/route.h
Show All 23 Lines | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
* SUCH DAMAGE. | * SUCH DAMAGE. | ||||
* | * | ||||
* @(#)route.h 8.4 (Berkeley) 1/9/95 | * @(#)route.h 8.4 (Berkeley) 1/9/95 | ||||
* $FreeBSD$ | |||||
*/ | */ | ||||
#ifndef _NET_ROUTE_H_ | #ifndef _NET_ROUTE_H_ | ||||
#define _NET_ROUTE_H_ | #define _NET_ROUTE_H_ | ||||
#include <net/vnet.h> | |||||
/* | |||||
* Kernel resident routing tables. | |||||
* | |||||
* The routing tables are initialized when interface addresses | |||||
* are set by making entries for all directly connected interfaces. | |||||
*/ | |||||
/* | |||||
* Struct route consiste of a destination address, | |||||
* a route entry pointer, link-layer prepend data pointer along | |||||
* with its length. | |||||
*/ | |||||
struct route { | |||||
struct nhop_object *ro_nh; | |||||
struct llentry *ro_lle; | |||||
/* | |||||
* ro_prepend and ro_plen are only used for bpf to pass in a | |||||
* preformed header. They are not cacheable. | |||||
*/ | |||||
char *ro_prepend; | |||||
uint16_t ro_plen; | |||||
uint16_t ro_flags; | |||||
uint16_t ro_mtu; /* saved ro_rt mtu */ | |||||
uint16_t spare; | |||||
struct sockaddr ro_dst; | |||||
}; | |||||
#define RT_L2_ME_BIT 2 /* dst L2 addr is our address */ | |||||
#define RT_MAY_LOOP_BIT 3 /* dst may require loop copy */ | |||||
#define RT_HAS_HEADER_BIT 4 /* mbuf already have its header prepended */ | |||||
#define RT_L2_ME (1 << RT_L2_ME_BIT) /* 0x0004 */ | |||||
#define RT_MAY_LOOP (1 << RT_MAY_LOOP_BIT) /* 0x0008 */ | |||||
#define RT_HAS_HEADER (1 << RT_HAS_HEADER_BIT) /* 0x0010 */ | |||||
#define RT_REJECT 0x0020 /* Destination is reject */ | |||||
#define RT_BLACKHOLE 0x0040 /* Destination is blackhole */ | |||||
#define RT_HAS_GW 0x0080 /* Destination has GW */ | |||||
#define RT_LLE_CACHE 0x0100 /* Cache link layer */ | |||||
struct rt_metrics { | struct rt_metrics { | ||||
u_long rmx_locks; /* Kernel must leave these values alone */ | u_long rmx_locks; /* Kernel must leave these values alone */ | ||||
u_long rmx_mtu; /* MTU for this path */ | u_long rmx_mtu; /* MTU for this path */ | ||||
u_long rmx_hopcount; /* max hops expected */ | u_long rmx_hopcount; /* max hops expected */ | ||||
u_long rmx_expire; /* lifetime for route, e.g. redirect */ | u_long rmx_expire; /* lifetime for route, e.g. redirect */ | ||||
u_long rmx_recvpipe; /* inbound delay-bandwidth product */ | u_long rmx_recvpipe; /* inbound delay-bandwidth product */ | ||||
u_long rmx_sendpipe; /* outbound delay-bandwidth product */ | u_long rmx_sendpipe; /* outbound delay-bandwidth product */ | ||||
u_long rmx_ssthresh; /* outbound gateway buffer limit */ | u_long rmx_ssthresh; /* outbound gateway buffer limit */ | ||||
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/* lle state is exported in rmx_state rt_metrics field */ | /* lle state is exported in rmx_state rt_metrics field */ | ||||
#define rmx_state rmx_weight | #define rmx_state rmx_weight | ||||
/* default route weight */ | /* default route weight */ | ||||
#define RT_DEFAULT_WEIGHT 1 | #define RT_DEFAULT_WEIGHT 1 | ||||
#define RT_MAX_WEIGHT 16777215 /* 3 bytes */ | #define RT_MAX_WEIGHT 16777215 /* 3 bytes */ | ||||
/* | |||||
* Keep a generation count of routing table, incremented on route addition, | |||||
* so we can invalidate caches. This is accessed without a lock, as precision | |||||
* is not required. | |||||
*/ | |||||
typedef volatile u_int rt_gen_t; /* tree generation (for adds) */ | |||||
#define RT_GEN(fibnum, af) rt_tables_get_gen(fibnum, af) | |||||
#define RT_DEFAULT_FIB 0 /* Explicitly mark fib=0 restricted cases */ | #define RT_DEFAULT_FIB 0 /* Explicitly mark fib=0 restricted cases */ | ||||
#define RT_ALL_FIBS -1 /* Announce event for every fib */ | #define RT_ALL_FIBS -1 /* Announce event for every fib */ | ||||
#ifdef _KERNEL | |||||
VNET_DECLARE(uint32_t, _rt_numfibs); /* number of existing route tables */ | |||||
#define V_rt_numfibs VNET(_rt_numfibs) | |||||
/* temporary compat arg */ | |||||
#define rt_numfibs V_rt_numfibs | |||||
VNET_DECLARE(u_int, rt_add_addr_allfibs); /* Announce interfaces to all fibs */ | |||||
#define V_rt_add_addr_allfibs VNET(rt_add_addr_allfibs) | |||||
/* Calculate flowid for locally-originated packets */ | |||||
#define V_fib_hash_outbound VNET(fib_hash_outbound) | |||||
VNET_DECLARE(u_int, fib_hash_outbound); | |||||
/* Outbound flowid generation rules */ | |||||
#ifdef RSS | |||||
#define fib4_calc_packet_hash xps_proto_software_hash_v4 | |||||
#define fib6_calc_packet_hash xps_proto_software_hash_v6 | |||||
#define CALC_FLOWID_OUTBOUND_SENDTO true | |||||
#ifdef ROUTE_MPATH | |||||
#define CALC_FLOWID_OUTBOUND V_fib_hash_outbound | |||||
#else | |||||
#define CALC_FLOWID_OUTBOUND false | |||||
#endif | |||||
#else /* !RSS */ | |||||
#define fib4_calc_packet_hash fib4_calc_software_hash | |||||
#define fib6_calc_packet_hash fib6_calc_software_hash | |||||
#ifdef ROUTE_MPATH | |||||
#define CALC_FLOWID_OUTBOUND_SENDTO V_fib_hash_outbound | |||||
#define CALC_FLOWID_OUTBOUND V_fib_hash_outbound | |||||
#else | |||||
#define CALC_FLOWID_OUTBOUND_SENDTO false | |||||
#define CALC_FLOWID_OUTBOUND false | |||||
#endif | |||||
#endif /* RSS */ | |||||
#endif /* _KERNEL */ | |||||
/* | /* | ||||
* We distinguish between routes to hosts and routes to networks, | * We distinguish between routes to hosts and routes to networks, | ||||
* preferring the former if available. For each route we infer | * preferring the former if available. For each route we infer | ||||
* the interface to use from the gateway address supplied when | * the interface to use from the gateway address supplied when | ||||
* the route was entered. Routes that forward packets through | * the route was entered. Routes that forward packets through | ||||
* gateways are marked so that the output routines know to address the | * gateways are marked so that the output routines know to address the | ||||
* gateway rather than the ultimate destination. | * gateway rather than the ultimate destination. | ||||
*/ | */ | ||||
Show All 31 Lines | #define RTF_GWFLAG_COMPAT 0x80000000 /* a compatibility bit for interacting | ||||
with existing routing apps */ | with existing routing apps */ | ||||
/* Mask of RTF flags that are allowed to be modified by RTM_CHANGE. */ | /* Mask of RTF flags that are allowed to be modified by RTM_CHANGE. */ | ||||
#define RTF_FMASK \ | #define RTF_FMASK \ | ||||
(RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ | (RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ | ||||
RTF_REJECT | RTF_STATIC | RTF_STICKY) | RTF_REJECT | RTF_STATIC | RTF_STICKY) | ||||
/* | /* | ||||
* fib_ nexthop API flags. | |||||
*/ | |||||
/* Consumer-visible nexthop info flags */ | |||||
#define NHF_MULTIPATH 0x0008 /* Nexhop is a nexthop group */ | |||||
#define NHF_REJECT 0x0010 /* RTF_REJECT */ | |||||
#define NHF_BLACKHOLE 0x0020 /* RTF_BLACKHOLE */ | |||||
#define NHF_REDIRECT 0x0040 /* RTF_DYNAMIC|RTF_MODIFIED */ | |||||
#define NHF_DEFAULT 0x0080 /* Default route */ | |||||
#define NHF_BROADCAST 0x0100 /* RTF_BROADCAST */ | |||||
#define NHF_GATEWAY 0x0200 /* RTF_GATEWAY */ | |||||
#define NHF_HOST 0x0400 /* RTF_HOST */ | |||||
/* Nexthop request flags */ | |||||
#define NHR_NONE 0x00 /* empty flags field */ | |||||
#define NHR_REF 0x01 /* reference nexhop */ | |||||
#define NHR_NODEFAULT 0x02 /* uRPF: do not consider default route */ | |||||
/* Control plane route request flags */ | |||||
#define NHR_COPY 0x100 /* Copy rte data */ | |||||
#define NHR_UNLOCKED 0x200 /* Do not lock table */ | |||||
/* | |||||
* Routing statistics. | * Routing statistics. | ||||
*/ | */ | ||||
struct rtstat { | struct rtstat { | ||||
uint64_t rts_badredirect; /* bogus redirect calls */ | uint64_t rts_badredirect; /* bogus redirect calls */ | ||||
uint64_t rts_dynamic; /* routes created by redirects */ | uint64_t rts_dynamic; /* routes created by redirects */ | ||||
uint64_t rts_newgateway; /* routes modified by redirects */ | uint64_t rts_newgateway; /* routes modified by redirects */ | ||||
uint64_t rts_unreach; /* lookups which failed */ | uint64_t rts_unreach; /* lookups which failed */ | ||||
uint64_t rts_wildcard; /* lookups satisfied by a wildcard */ | uint64_t rts_wildcard; /* lookups satisfied by a wildcard */ | ||||
▲ Show 20 Lines • Show All 91 Lines • ▼ Show 20 Lines | |||||
#define RTAX_NETMASK 2 /* netmask sockaddr present */ | #define RTAX_NETMASK 2 /* netmask sockaddr present */ | ||||
#define RTAX_GENMASK 3 /* cloning mask sockaddr present */ | #define RTAX_GENMASK 3 /* cloning mask sockaddr present */ | ||||
#define RTAX_IFP 4 /* interface name sockaddr present */ | #define RTAX_IFP 4 /* interface name sockaddr present */ | ||||
#define RTAX_IFA 5 /* interface addr sockaddr present */ | #define RTAX_IFA 5 /* interface addr sockaddr present */ | ||||
#define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ | #define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ | ||||
#define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ | #define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ | ||||
#define RTAX_MAX 8 /* size of array to allocate */ | #define RTAX_MAX 8 /* size of array to allocate */ | ||||
struct rtentry; | |||||
struct nhop_object; | |||||
typedef int rib_filter_f_t(const struct rtentry *, const struct nhop_object *, | |||||
void *); | |||||
struct rt_addrinfo { | |||||
int rti_addrs; /* Route RTF_ flags */ | |||||
int rti_flags; /* Route RTF_ flags */ | |||||
struct sockaddr *rti_info[RTAX_MAX]; /* Sockaddr data */ | |||||
struct ifaddr *rti_ifa; /* value of rt_ifa addr */ | |||||
struct ifnet *rti_ifp; /* route interface */ | |||||
rib_filter_f_t *rti_filter; /* filter function */ | |||||
void *rti_filterdata; /* filter parameters */ | |||||
u_long rti_mflags; /* metrics RTV_ flags */ | |||||
u_long rti_spare; /* Will be used for fib */ | |||||
struct rt_metrics *rti_rmx; /* Pointer to route metrics */ | |||||
}; | |||||
/* | /* | ||||
* This macro returns the size of a struct sockaddr when passed | * This macro returns the size of a struct sockaddr when passed | ||||
* through a routing socket. Basically we round up sa_len to | * through a routing socket. Basically we round up sa_len to | ||||
* a multiple of sizeof(long), with a minimum of sizeof(long). | * a multiple of sizeof(long), with a minimum of sizeof(long). | ||||
* The case sa_len == 0 should only apply to empty structures. | * The case sa_len == 0 should only apply to empty structures. | ||||
*/ | */ | ||||
#define SA_SIZE(sa) \ | #define SA_SIZE(sa) \ | ||||
( (((struct sockaddr *)(sa))->sa_len == 0) ? \ | ( (((struct sockaddr *)(sa))->sa_len == 0) ? \ | ||||
sizeof(long) : \ | sizeof(long) : \ | ||||
1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(long) - 1) ) ) | 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(long) - 1) ) ) | ||||
#define sa_equal(a, b) ( \ | #define sa_equal(a, b) ( \ | ||||
(((const struct sockaddr *)(a))->sa_len == ((const struct sockaddr *)(b))->sa_len) && \ | (((const struct sockaddr *)(a))->sa_len == ((const struct sockaddr *)(b))->sa_len) && \ | ||||
(bcmp((a), (b), ((const struct sockaddr *)(b))->sa_len) == 0)) | (bcmp((a), (b), ((const struct sockaddr *)(b))->sa_len) == 0)) | ||||
#ifdef _KERNEL | #ifdef _KERNEL | ||||
#define RT_LINK_IS_UP(ifp) (!((ifp)->if_capabilities & IFCAP_LINKSTATE) \ | #include <net/route/route_fib.h> | ||||
|| (ifp)->if_link_state == LINK_STATE_UP) | |||||
#define RO_NHFREE(_ro) do { \ | |||||
if ((_ro)->ro_nh) { \ | |||||
NH_FREE((_ro)->ro_nh); \ | |||||
(_ro)->ro_nh = NULL; \ | |||||
} \ | |||||
} while (0) | |||||
#define RO_INVALIDATE_CACHE(ro) do { \ | |||||
if ((ro)->ro_lle != NULL) { \ | |||||
LLE_FREE((ro)->ro_lle); \ | |||||
(ro)->ro_lle = NULL; \ | |||||
} \ | |||||
if ((ro)->ro_nh != NULL) { \ | |||||
NH_FREE((ro)->ro_nh); \ | |||||
(ro)->ro_nh = NULL; \ | |||||
} \ | |||||
} while (0) | |||||
#define RO_GET_FAMILY(ro, dst) ((ro) != NULL && \ | |||||
(ro)->ro_flags & RT_HAS_GW \ | |||||
? (ro)->ro_dst.sa_family : (dst)->sa_family) | |||||
/* | |||||
* Validate a cached route based on a supplied cookie. If there is an | |||||
* out-of-date cache, simply free it. Update the generation number | |||||
* for the new allocation | |||||
*/ | |||||
#define NH_VALIDATE(ro, cookiep, fibnum) do { \ | |||||
rt_gen_t cookie = RT_GEN(fibnum, (ro)->ro_dst.sa_family); \ | |||||
if (*(cookiep) != cookie) { \ | |||||
RO_INVALIDATE_CACHE(ro); \ | |||||
*(cookiep) = cookie; \ | |||||
} \ | |||||
} while (0) | |||||
struct ifmultiaddr; | struct ifmultiaddr; | ||||
struct rib_head; | struct rib_head; | ||||
struct rt_addrinfo; | |||||
struct rtentry; | |||||
struct ifnet; | |||||
struct nhop_object; | |||||
void rt_ieee80211msg(struct ifnet *, int, void *, size_t); | void rt_ieee80211msg(struct ifnet *, int, void *, size_t); | ||||
void rt_ifmsg(struct ifnet *, int); | void rt_ifmsg(struct ifnet *, int); | ||||
void rt_missmsg(int, struct rt_addrinfo *, int, int); | void rt_missmsg(int, struct rt_addrinfo *, int, int); | ||||
void rt_missmsg_fib(int, struct rt_addrinfo *, int, int, int); | void rt_missmsg_fib(int, struct rt_addrinfo *, int, int, int); | ||||
int rt_addrmsg(int, struct ifaddr *, int); | int rt_addrmsg(int, struct ifaddr *, int); | ||||
int rt_routemsg(int, struct rtentry *, struct nhop_object *, int); | int rt_routemsg(int, struct rtentry *, struct nhop_object *, int); | ||||
int rt_routemsg_info(int, struct rt_addrinfo *, int); | int rt_routemsg_info(int, struct rt_addrinfo *, int); | ||||
Show All 12 Lines | |||||
void rt_flushifroutes(struct ifnet *ifp); | void rt_flushifroutes(struct ifnet *ifp); | ||||
/* XXX MRT NEW VERSIONS THAT USE FIBs | /* XXX MRT NEW VERSIONS THAT USE FIBs | ||||
* For now the protocol indepedent versions are the same as the AF_INET ones | * For now the protocol indepedent versions are the same as the AF_INET ones | ||||
* but this will change.. | * but this will change.. | ||||
*/ | */ | ||||
int rtioctl_fib(u_long, caddr_t, u_int); | int rtioctl_fib(u_long, caddr_t, u_int); | ||||
/* New API */ | |||||
void rib_flush_routes_family(int family); | #endif /* _KERNEL */ | ||||
struct nhop_object *rib_lookup(uint32_t fibnum, const struct sockaddr *dst, | |||||
uint32_t flags, uint32_t flowid); | |||||
const char *rib_print_family(int family); | |||||
#endif | |||||
#endif | #endif |