Page MenuHomeFreeBSD
Differential D26449 Diff 77085 sys/net/route/route_var.h

Changeset View

Standalone View

View Options

sys/net/route/route_var.h

Show First 20 Lines • Show All 81 Lines • ▼ Show 20 Lines
#define RIB_WLOCK(rh) rm_wlock(&(rh)->rib_lock) #define RIB_WLOCK(rh) rm_wlock(&(rh)->rib_lock)
#define RIB_WUNLOCK(rh) rm_wunlock(&(rh)->rib_lock) #define RIB_WUNLOCK(rh) rm_wunlock(&(rh)->rib_lock)
#define RIB_LOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_LOCKED) #define RIB_LOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_LOCKED)
#define RIB_WLOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_WLOCKED) #define RIB_WLOCK_ASSERT(rh) rm_assert(&(rh)->rib_lock, RA_WLOCKED)
/* Constants */ /* Constants */
#define RIB_MAX_RETRIES 3 #define RIB_MAX_RETRIES 3
#define RT_MAXFIBS UINT16_MAX #define RT_MAXFIBS UINT16_MAX
#define RIB_MAX_MPATH_WIDTH 64
/* Macro for verifying fields in af-specific 'struct route' structures */ /* Macro for verifying fields in af-specific 'struct route' structures */
#define CHK_STRUCT_FIELD_GENERIC(_s1, _f1, _s2, _f2) \ #define CHK_STRUCT_FIELD_GENERIC(_s1, _f1, _s2, _f2) \
_Static_assert(sizeof(((_s1 *)0)->_f1) == sizeof(((_s2 *)0)->_f2), \ _Static_assert(sizeof(((_s1 *)0)->_f1) == sizeof(((_s2 *)0)->_f2), \
"Fields " #_f1 " and " #_f2 " size differs"); \ "Fields " #_f1 " and " #_f2 " size differs"); \
_Static_assert(__offsetof(_s1, _f1) == __offsetof(_s2, _f2), \ _Static_assert(__offsetof(_s1, _f1) == __offsetof(_s2, _f2), \
"Fields " #_f1 " and " #_f2 " offset differs"); "Fields " #_f1 " and " #_f2 " offset differs");
Show All 12 Lines
#define CHK_STRUCT_ROUTE_COMPAT(_ro_new, _dst_new) \ #define CHK_STRUCT_ROUTE_COMPAT(_ro_new, _dst_new) \
CHK_STRUCT_ROUTE_FIELDS(_ro_new); \ CHK_STRUCT_ROUTE_FIELDS(_ro_new); \
_Static_assert(__offsetof(struct route, ro_dst) == __offsetof(_ro_new, _dst_new),\ _Static_assert(__offsetof(struct route, ro_dst) == __offsetof(_ro_new, _dst_new),\
"ro_dst and " #_dst_new " are at different offset") "ro_dst and " #_dst_new " are at different offset")
struct rib_head *rt_tables_get_rnh(uint32_t table, sa_family_t family); struct rib_head *rt_tables_get_rnh(uint32_t table, sa_family_t family);
void rt_mpath_init_rnh(struct rib_head *rnh); void rt_mpath_init_rnh(struct rib_head *rnh);
int rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum); int rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum);
void rt_setmetrics(const struct rt_addrinfo *info, struct rtentry *rt);
#ifdef RADIX_MPATH
struct radix_node *rt_mpath_unlink(struct rib_head *rnh,
struct rt_addrinfo *info, struct rtentry *rto, int *perror);
#endif
struct rib_cmd_info; struct rib_cmd_info;
VNET_PCPUSTAT_DECLARE(struct rtstat, rtstat); VNET_PCPUSTAT_DECLARE(struct rtstat, rtstat);
#define RTSTAT_ADD(name, val) \ #define RTSTAT_ADD(name, val) \
VNET_PCPUSTAT_ADD(struct rtstat, rtstat, name, (val)) VNET_PCPUSTAT_ADD(struct rtstat, rtstat, name, (val))
#define RTSTAT_INC(name) RTSTAT_ADD(name, 1) #define RTSTAT_INC(name) RTSTAT_ADD(name, 1)
/* /*
▲ Show 20 Lines • Show All 67 Lines • ▼ Show 20 Lines
/* Nexthop rt flags mask */ /* Nexthop rt flags mask */
#define NHOP_RT_FLAG_MASK (RTF_GATEWAY | RTF_HOST | RTF_REJECT | RTF_DYNAMIC | \ #define NHOP_RT_FLAG_MASK (RTF_GATEWAY | RTF_HOST | RTF_REJECT | RTF_DYNAMIC | \
RTF_MODIFIED | RTF_STATIC | RTF_BLACKHOLE | RTF_PROTO1 | RTF_PROTO2 | \ RTF_MODIFIED | RTF_STATIC | RTF_BLACKHOLE | RTF_PROTO1 | RTF_PROTO2 | \
RTF_PROTO3 | RTF_FIXEDMTU | RTF_PINNED | RTF_BROADCAST) RTF_PROTO3 | RTF_FIXEDMTU | RTF_PINNED | RTF_BROADCAST)
/* rtentry rt flag mask */ /* rtentry rt flag mask */
#define RTE_RT_FLAG_MASK (RTF_UP | RTF_HOST) #define RTE_RT_FLAG_MASK (RTF_UP | RTF_HOST)
/* Nexthop selection */
#define _NH2MP(_nh) ((struct nhgrp_object *)(_nh))
#define _SELECT_NHOP(_nh, _flowid) \
(_NH2MP(_nh))->nhops[(_flowid) % (_NH2MP(_nh))->mp_size]
#define _RT_SELECT_NHOP(_nh, _flowid) \
((!NH_IS_MULTIPATH(_nh)) ? (_nh) : _SELECT_NHOP(_nh, _flowid))
#define RT_SELECT_NHOP(_rt, _flowid) _RT_SELECT_NHOP((_rt)->rt_nhop, _flowid)
/* route_temporal.c */ /* route_temporal.c */
void tmproutes_update(struct rib_head *rnh, struct rtentry *rt); void tmproutes_update(struct rib_head *rnh, struct rtentry *rt);
void tmproutes_init(struct rib_head *rh); void tmproutes_init(struct rib_head *rh);
void tmproutes_destroy(struct rib_head *rh); void tmproutes_destroy(struct rib_head *rh);
/* route_ctl.c */ /* route_ctl.c */
struct route_nhop_data { struct route_nhop_data {
union {
struct nhop_object *rnd_nhop; struct nhop_object *rnd_nhop;
struct nhgrp_object *rnd_nhgrp;
};
uint32_t rnd_weight; uint32_t rnd_weight;
}; };
int change_route_nhop(struct rib_head *rnh, struct rtentry *rt,
struct rt_addrinfo *info, struct route_nhop_data *rnd,
struct rib_cmd_info *rc);
int change_route_conditional(struct rib_head *rnh, struct rtentry *rt, int change_route_conditional(struct rib_head *rnh, struct rtentry *rt,
struct rt_addrinfo *info, struct route_nhop_data *nhd_orig, struct rt_addrinfo *info, struct route_nhop_data *nhd_orig,
struct route_nhop_data *nhd_new, struct rib_cmd_info *rc); struct route_nhop_data *nhd_new, struct rib_cmd_info *rc);
struct rtentry *lookup_prefix(struct rib_head *rnh, struct rtentry *lookup_prefix(struct rib_head *rnh,
const struct rt_addrinfo *info, struct route_nhop_data *rnd); const struct rt_addrinfo *info, struct route_nhop_data *rnd);
struct rtentry *lookup_lpm(struct rib_head *rnh, const struct sockaddr *dst,
struct route_nhop_data *rnd);
bool nhop_can_multipath(const struct nhop_object *nh);
bool match_nhop_gw(const struct nhop_object *nh, const struct sockaddr *gw);
int check_info_match_nhop(const struct rt_addrinfo *info, int check_info_match_nhop(const struct rt_addrinfo *info,
const struct rtentry *rt, const struct nhop_object *nh); const struct rtentry *rt, const struct nhop_object *nh);
int can_override_nhop(const struct rt_addrinfo *info, int can_override_nhop(const struct rt_addrinfo *info,
const struct nhop_object *nh); const struct nhop_object *nh);
void vnet_rtzone_init(void); void vnet_rtzone_init(void);
void vnet_rtzone_destroy(void); void vnet_rtzone_destroy(void);
/* subscriptions */ /* subscriptions */
void rib_init_subscriptions(struct rib_head *rnh); void rib_init_subscriptions(struct rib_head *rnh);
void rib_destroy_subscriptions(struct rib_head *rnh); void rib_destroy_subscriptions(struct rib_head *rnh);
/* Nexhops */ /* Nexhops */
void nhops_init(void); void nhops_init(void);
int nhops_init_rib(struct rib_head *rh); int nhops_init_rib(struct rib_head *rh);
void nhops_destroy_rib(struct rib_head *rh); void nhops_destroy_rib(struct rib_head *rh);
void nhop_ref_object(struct nhop_object *nh); void nhop_ref_object(struct nhop_object *nh);
int nhop_try_ref_object(struct nhop_object *nh); int nhop_try_ref_object(struct nhop_object *nh);
int nhop_ref_any(struct nhop_object *nh);
void nhop_free_any(struct nhop_object *nh); void nhop_free_any(struct nhop_object *nh);
void nhop_set_type(struct nhop_object *nh, enum nhop_type nh_type); void nhop_set_type(struct nhop_object *nh, enum nhop_type nh_type);
void nhop_set_rtflags(struct nhop_object *nh, int rt_flags); void nhop_set_rtflags(struct nhop_object *nh, int rt_flags);
int nhop_create_from_info(struct rib_head *rnh, struct rt_addrinfo *info, int nhop_create_from_info(struct rib_head *rnh, struct rt_addrinfo *info,
struct nhop_object **nh_ret); struct nhop_object **nh_ret);
int nhop_create_from_nhop(struct rib_head *rnh, const struct nhop_object *nh_orig, int nhop_create_from_nhop(struct rib_head *rnh, const struct nhop_object *nh_orig,
struct rt_addrinfo *info, struct nhop_object **pnh_priv); struct rt_addrinfo *info, struct nhop_object **pnh_priv);
void nhops_update_ifmtu(struct rib_head *rh, struct ifnet *ifp, uint32_t mtu); void nhops_update_ifmtu(struct rib_head *rh, struct ifnet *ifp, uint32_t mtu);
int nhops_dump_sysctl(struct rib_head *rh, struct sysctl_req *w); int nhops_dump_sysctl(struct rib_head *rh, struct sysctl_req *w);
/* MULTIPATH */
#define MPF_MULTIPATH 0x08 /* need to be consistent with NHF_MULTIPATH */
struct nhgrp_object {
uint16_t mp_flags; /* multipath flags */
uint8_t mp_size; /* size of datapath mpath group */
uint8_t spare;
struct nhop_object *nhops[0]; /* nhops */
};
static inline struct nhop_object *
nhop_select(struct nhop_object *nh, uint32_t flowid)
{
#ifdef ROUTE_MPATH
if (NH_IS_NHGRP(nh)) {
struct nhgrp_object *nhg = (struct nhgrp_object *)nh;
nh = nhg->nhops[flowid % nhg->mp_size];
}
#endif
return (nh);
}
struct weightened_nhop;
/* mpath_ctl.c */
int add_route_mpath(struct rib_head *rnh, struct rt_addrinfo *info,
struct rtentry *rt, struct route_nhop_data *rnd_add,
struct route_nhop_data *rnd_orig, struct rib_cmd_info *rc);
int del_route_mpath(struct rib_head *rh, struct rt_addrinfo *info,
struct rtentry *rt, struct nhgrp_object *nhg, struct rib_cmd_info *rc);
/* nhgrp.c */
int nhgrp_ctl_init(struct nh_control *ctl);
void nhgrp_ctl_free(struct nh_control *ctl);
void nhgrp_ctl_unlink_all(struct nh_control *ctl);
/* nhgrp_ctl.c */
int nhgrp_dump_sysctl(struct rib_head *rh, struct sysctl_req *w);
int nhgrp_get_group(struct rib_head *rh, struct weightened_nhop *wn,
int num_nhops, struct route_nhop_data *rnd);
typedef bool nhgrp_filter_cb_t(const struct nhop_object *nh, void *data);
int nhgrp_get_filtered_group(struct rib_head *rh, const struct nhgrp_object *src,
nhgrp_filter_cb_t flt_func, void *flt_data, struct route_nhop_data *rnd);
int nhgrp_get_addition_group(struct rib_head *rnh,
struct route_nhop_data *rnd_orig, struct route_nhop_data *rnd_add,
struct route_nhop_data *rnd_new);
void nhgrp_free(struct nhgrp_object *nhg);
/* Entropy data used for outbound hashing */
#define MPATH_ENTROPY_KEY_LEN 40
extern uint8_t mpath_entropy_key[MPATH_ENTROPY_KEY_LEN];
#endif #endif