39#include <sys/rmlock.h>
40#include <sys/malloc.h>
42#include <sys/socket.h>
43#include <sys/sysctl.h>
44#include <sys/kernel.h>
47#include <net/if_var.h>
50#include <net/route/route_ctl.h>
51#include <net/route/route_var.h>
52#include <net/route/fib_algo.h>
53#include <net/route/nhop.h>
54#include <net/toeplitz.h>
65CHK_STRUCT_ROUTE_COMPAT(
struct route_in, ro_dst4);
72struct _hash_5tuple_ipv4 {
75 unsigned short src_port;
76 unsigned short dst_port;
80_Static_assert(
sizeof(
struct _hash_5tuple_ipv4) == 16,
81 "_hash_5tuple_ipv4 size is wrong");
85 unsigned short src_port,
unsigned short dst_port,
char proto,
88 struct _hash_5tuple_ipv4 data;
92 data.src_port = src_port;
93 data.dst_port = dst_port;
95 data.spare[0] = data.spare[1] = data.spare[2] = 0;
97 *phashtype = M_HASHTYPE_OPAQUE;
99 return (toeplitz_hash(MPATH_ENTROPY_KEY_LEN, mpath_entropy_key,
100 sizeof(data), (
uint8_t *)&data));
116 struct nhop_object *nh;
117 struct fib_dp *dp = &V_inet_dp[fibnum];
118 struct flm_lookup_key key = {.addr4 = dst };
120 nh = dp->f(dp->arg, key, scopeid);
122 nh = nhop_select(nh, flowid);
124 if (RT_LINK_IS_UP(nh->nh_ifp)) {
130 RTSTAT_INC(rts_unreach);
140 struct radix_node *rn;
141 struct nhop_object *nh;
143 KASSERT((fibnum < rt_numfibs), (
"fib4_lookup: bad fibnum"));
144 rh = rt_tables_get_rnh(fibnum, AF_INET);
157 rn = rh->rnh_matchaddr((
void *)&sin4, &rh->head);
158 if (rn != NULL && ((rn->rn_flags & RNF_ROOT) == 0)) {
159 nh = nhop_select((RNTORT(rn))->rt_nhop, flowid);
161 if (RT_LINK_IS_UP(nh->nh_ifp)) {
170 RTSTAT_INC(rts_unreach);
176check_urpf_nhop(
const struct nhop_object *nh,
uint32_t flags,
177 const struct ifnet *src_if)
180 if (src_if != NULL && nh->nh_aifp == src_if) {
183 if (src_if == NULL) {
184 if ((flags & NHR_NODEFAULT) == 0)
186 else if ((nh->nh_flags & NHF_DEFAULT) == 0)
194check_urpf(
struct nhop_object *nh,
uint32_t flags,
195 const struct ifnet *src_if)
198 if (NH_IS_NHGRP(nh)) {
199 struct weightened_nhop *wn;
201 wn = nhgrp_get_nhops((
struct nhgrp_object *)nh, &num_nhops);
202 for (
int i = 0; i < num_nhops; i++) {
203 if (check_urpf_nhop(wn[i].nh, flags, src_if) != 0)
209 return (check_urpf_nhop(nh, flags, src_if));
213static struct nhop_object *
218 struct radix_node *rn;
219 struct nhop_object *nh;
221 KASSERT((fibnum < rt_numfibs), (
"fib4_check_urpf: bad fibnum"));
222 rh = rt_tables_get_rnh(fibnum, AF_INET);
228 memset(&sin4, 0,
sizeof(sin4));
234 rn = rh->rnh_matchaddr((
void *)&sin4, &rh->head);
235 if (rn != NULL && ((rn->rn_flags & RNF_ROOT) == 0))
236 nh = RNTORT(rn)->rt_nhop;
254 uint32_t flags,
const struct ifnet *src_if)
256 struct nhop_object *nh;
258 struct fib_dp *dp = &V_inet_dp[fibnum];
259 struct flm_lookup_key key = {.addr4 = dst };
261 nh = dp->f(dp->arg, key, scopeid);
263 nh = lookup_nhop(fibnum, dst, scopeid);
266 return (check_urpf(nh, flags, src_if));
282 uint32_t flags,
struct route_nhop_data *rnd)
286 struct radix_node *rn;
289 KASSERT((fibnum < rt_numfibs), (
"fib4_lookup_rt: bad fibnum"));
290 rh = rt_tables_get_rnh(fibnum, AF_INET);
302 if (!(flags & NHR_UNLOCKED))
304 rn = rh->rnh_matchaddr((
void *)&sin4, &rh->head);
305 if (rn != NULL && ((rn->rn_flags & RNF_ROOT) == 0)) {
306 rt = (
struct rtentry *)rn;
307 rnd->rnd_nhop = rt->rt_nhop;
308 rnd->rnd_weight = rt->rt_weight;
310 if (!(flags & NHR_UNLOCKED))
321 struct route_nhop_data rnd;
325 struct nhop_object *nh = nhop_select(rnd.rnd_nhop, 0);
327 if (RT_LINK_IS_UP(nh->nh_ifp))
VNET_DEFINE(struct cc_algo *, default_cc_ptr)
struct rtentry * fib4_lookup_rt(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, struct route_nhop_data *nrd)
struct nhop_object * fib4_lookup_debugnet(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags)
struct nhop_object * fib4_lookup(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, uint32_t flowid)
int fib4_check_urpf(uint32_t fibnum, struct in_addr dst, uint32_t scopeid, uint32_t flags, const struct ifnet *src_if)
uint32_t fib4_calc_software_hash(struct in_addr src, struct in_addr dst, unsigned short src_port, unsigned short dst_port, char proto, uint32_t *phashtype)