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718e3744 | 1 | /* |
2 | * Kernel routing table readup by getmsg(2) | |
3 | * Copyright (C) 1999 Michael Handler | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
ddfeb486 DL |
24 | #ifdef SUNOS_5 |
25 | ||
718e3744 | 26 | #include "prefix.h" |
27 | #include "log.h" | |
28 | #include "if.h" | |
78104b9b | 29 | #include "vrf.h" |
82283592 | 30 | #include "vty.h" |
718e3744 | 31 | |
32 | #include "zebra/rib.h" | |
05f7f5db | 33 | #include "zebra/rt.h" |
718e3744 | 34 | |
a5b38c5b DL |
35 | /* Thank you, Solaris, for polluting application symbol namespace. */ |
36 | #undef hook_register | |
37 | #undef hook_unregister | |
38 | ||
718e3744 | 39 | #include <sys/stream.h> |
40 | #include <sys/tihdr.h> | |
41 | ||
42 | /* Solaris defines these in both <netinet/in.h> and <inet/in.h>, sigh */ | |
43 | #ifdef SUNOS_5 | |
44 | #include <sys/tiuser.h> | |
45 | #ifndef T_CURRENT | |
46 | #define T_CURRENT MI_T_CURRENT | |
47 | #endif /* T_CURRENT */ | |
48 | #ifndef IRE_CACHE | |
49 | #define IRE_CACHE 0x0020 /* Cached Route entry */ | |
50 | #endif /* IRE_CACHE */ | |
51 | #ifndef IRE_HOST_REDIRECT | |
52 | #define IRE_HOST_REDIRECT 0x0200 /* Host route entry from redirects */ | |
53 | #endif /* IRE_HOST_REDIRECT */ | |
54 | #ifndef IRE_CACHETABLE | |
d62a17ae | 55 | #define IRE_CACHETABLE (IRE_CACHE | IRE_BROADCAST | IRE_LOCAL | IRE_LOOPBACK) |
718e3744 | 56 | #endif /* IRE_CACHETABLE */ |
57 | #undef IPOPT_EOL | |
58 | #undef IPOPT_NOP | |
59 | #undef IPOPT_LSRR | |
60 | #undef IPOPT_RR | |
61 | #undef IPOPT_SSRR | |
62 | #endif /* SUNOS_5 */ | |
63 | ||
64 | #include <inet/common.h> | |
65 | #include <inet/ip.h> | |
66 | #include <inet/mib2.h> | |
67 | ||
68 | /* device to read IP routing table from */ | |
69 | #ifndef _PATH_GETMSG_ROUTE | |
70 | #define _PATH_GETMSG_ROUTE "/dev/ip" | |
71 | #endif /* _PATH_GETMSG_ROUTE */ | |
72 | ||
73 | #define RT_BUFSIZ 8192 | |
74 | ||
d62a17ae | 75 | static void handle_route_entry(mib2_ipRouteEntry_t *routeEntry) |
718e3744 | 76 | { |
d62a17ae | 77 | struct prefix prefix; |
fd36be7e DL |
78 | struct in_addr tmpaddr; |
79 | struct nexthop nh; | |
d7c0a89a | 80 | uint8_t zebra_flags = 0; |
718e3744 | 81 | |
d62a17ae | 82 | if (routeEntry->ipRouteInfo.re_ire_type & IRE_CACHETABLE) |
83 | return; | |
718e3744 | 84 | |
d62a17ae | 85 | if (routeEntry->ipRouteInfo.re_ire_type & IRE_HOST_REDIRECT) |
86 | zebra_flags |= ZEBRA_FLAG_SELFROUTE; | |
718e3744 | 87 | |
d62a17ae | 88 | prefix.family = AF_INET; |
718e3744 | 89 | |
d62a17ae | 90 | tmpaddr.s_addr = routeEntry->ipRouteDest; |
91 | prefix.u.prefix4 = tmpaddr; | |
718e3744 | 92 | |
d62a17ae | 93 | tmpaddr.s_addr = routeEntry->ipRouteMask; |
94 | prefix.prefixlen = ip_masklen(tmpaddr); | |
718e3744 | 95 | |
fd36be7e | 96 | memset(&nh, 0, sizeof(nh)); |
4a7371e9 | 97 | nh.vrf_id = VRF_DEFAULT; |
fd36be7e DL |
98 | nh.type = NEXTHOP_TYPE_IPV4; |
99 | nh.gate.ipv4.s_addr = routeEntry->ipRouteNextHop; | |
718e3744 | 100 | |
4a7371e9 DS |
101 | rib_add(AFI_IP, SAFI_UNICAST, VRF_DEFAULT, ZEBRA_ROUTE_KERNEL, 0, |
102 | zebra_flags, &prefix, NULL, &nh, 0, 0, 0, 0, 0); | |
718e3744 | 103 | } |
104 | ||
d62a17ae | 105 | void route_read(struct zebra_ns *zns) |
718e3744 | 106 | { |
d62a17ae | 107 | char storage[RT_BUFSIZ]; |
718e3744 | 108 | |
d62a17ae | 109 | struct T_optmgmt_req *TLIreq = (struct T_optmgmt_req *)storage; |
110 | struct T_optmgmt_ack *TLIack = (struct T_optmgmt_ack *)storage; | |
111 | struct T_error_ack *TLIerr = (struct T_error_ack *)storage; | |
718e3744 | 112 | |
d62a17ae | 113 | struct opthdr *MIB2hdr; |
718e3744 | 114 | |
d62a17ae | 115 | mib2_ipRouteEntry_t *routeEntry, *lastRouteEntry; |
718e3744 | 116 | |
d62a17ae | 117 | struct strbuf msgdata; |
118 | int flags, dev, retval, process; | |
718e3744 | 119 | |
d62a17ae | 120 | if ((dev = open(_PATH_GETMSG_ROUTE, O_RDWR)) == -1) { |
121 | zlog_warn("can't open %s: %s", _PATH_GETMSG_ROUTE, | |
122 | safe_strerror(errno)); | |
718e3744 | 123 | return; |
124 | } | |
125 | ||
126 | TLIreq->PRIM_type = T_OPTMGMT_REQ; | |
d62a17ae | 127 | TLIreq->OPT_offset = sizeof(struct T_optmgmt_req); |
128 | TLIreq->OPT_length = sizeof(struct opthdr); | |
718e3744 | 129 | TLIreq->MGMT_flags = T_CURRENT; |
130 | ||
d62a17ae | 131 | MIB2hdr = (struct opthdr *)&TLIreq[1]; |
718e3744 | 132 | |
133 | MIB2hdr->level = MIB2_IP; | |
134 | MIB2hdr->name = 0; | |
135 | MIB2hdr->len = 0; | |
d62a17ae | 136 | |
718e3744 | 137 | msgdata.buf = storage; |
d62a17ae | 138 | msgdata.len = sizeof(struct T_optmgmt_req) + sizeof(struct opthdr); |
718e3744 | 139 | |
140 | flags = 0; | |
141 | ||
d62a17ae | 142 | if (putmsg(dev, &msgdata, NULL, flags) == -1) { |
143 | zlog_warn("putmsg failed: %s", safe_strerror(errno)); | |
718e3744 | 144 | goto exit; |
145 | } | |
146 | ||
d62a17ae | 147 | MIB2hdr = (struct opthdr *)&TLIack[1]; |
148 | msgdata.maxlen = sizeof(storage); | |
718e3744 | 149 | |
150 | while (1) { | |
151 | flags = 0; | |
d62a17ae | 152 | retval = getmsg(dev, &msgdata, NULL, &flags); |
718e3744 | 153 | |
154 | if (retval == -1) { | |
d62a17ae | 155 | zlog_warn("getmsg(ctl) failed: %s", |
156 | safe_strerror(errno)); | |
718e3744 | 157 | goto exit; |
158 | } | |
159 | ||
160 | /* This is normal loop termination */ | |
d62a17ae | 161 | if (retval == 0 |
162 | && (size_t)msgdata.len >= sizeof(struct T_optmgmt_ack) | |
163 | && TLIack->PRIM_type == T_OPTMGMT_ACK | |
164 | && TLIack->MGMT_flags == T_SUCCESS && MIB2hdr->len == 0) | |
718e3744 | 165 | break; |
166 | ||
d62a17ae | 167 | if ((size_t)msgdata.len >= sizeof(struct T_error_ack) |
168 | && TLIerr->PRIM_type == T_ERROR_ACK) { | |
169 | zlog_warn("getmsg(ctl) returned T_ERROR_ACK: %s", | |
170 | safe_strerror((TLIerr->TLI_error == TSYSERR) | |
171 | ? TLIerr->UNIX_error | |
172 | : EPROTO)); | |
718e3744 | 173 | break; |
174 | } | |
175 | ||
176 | /* should dump more debugging info to the log statement, | |
177 | like what GateD does in this instance, but not | |
178 | critical yet. */ | |
d62a17ae | 179 | if (retval != MOREDATA |
180 | || (size_t)msgdata.len < sizeof(struct T_optmgmt_ack) | |
181 | || TLIack->PRIM_type != T_OPTMGMT_ACK | |
182 | || TLIack->MGMT_flags != T_SUCCESS) { | |
718e3744 | 183 | errno = ENOMSG; |
d62a17ae | 184 | zlog_warn("getmsg(ctl) returned bizarreness"); |
718e3744 | 185 | break; |
186 | } | |
187 | ||
188 | /* MIB2_IP_21 is the the pseudo-MIB2 ipRouteTable | |
189 | entry, see <inet/mib2.h>. "This isn't the MIB data | |
190 | you're looking for." */ | |
d62a17ae | 191 | process = (MIB2hdr->level == MIB2_IP |
192 | && MIB2hdr->name == MIB2_IP_21) | |
193 | ? 1 | |
194 | : 0; | |
718e3744 | 195 | |
196 | /* getmsg writes the data buffer out completely, not | |
197 | to the closest smaller multiple. Unless reassembling | |
198 | data structures across buffer boundaries is your idea | |
199 | of a good time, set maxlen to the closest smaller | |
200 | multiple of the size of the datastructure you're | |
201 | retrieving. */ | |
d62a17ae | 202 | msgdata.maxlen = |
203 | sizeof(storage) | |
204 | - (sizeof(storage) % sizeof(mib2_ipRouteEntry_t)); | |
718e3744 | 205 | |
206 | msgdata.len = 0; | |
207 | flags = 0; | |
208 | ||
209 | do { | |
d62a17ae | 210 | retval = getmsg(dev, NULL, &msgdata, &flags); |
718e3744 | 211 | |
212 | if (retval == -1) { | |
d62a17ae | 213 | zlog_warn("getmsg(data) failed: %s", |
214 | safe_strerror(errno)); | |
718e3744 | 215 | goto exit; |
216 | } | |
217 | ||
218 | if (!(retval == 0 || retval == MOREDATA)) { | |
d62a17ae | 219 | zlog_warn("getmsg(data) returned %d", retval); |
718e3744 | 220 | goto exit; |
221 | } | |
222 | ||
223 | if (process) { | |
d62a17ae | 224 | if (msgdata.len % sizeof(mib2_ipRouteEntry_t) |
225 | != 0) { | |
226 | zlog_warn( | |
227 | "getmsg(data) returned " | |
228 | "msgdata.len = %d (%% sizeof (mib2_ipRouteEntry_t) != 0)", | |
229 | msgdata.len); | |
718e3744 | 230 | goto exit; |
231 | } | |
232 | ||
d62a17ae | 233 | routeEntry = (mib2_ipRouteEntry_t *)msgdata.buf; |
234 | lastRouteEntry = | |
235 | (mib2_ipRouteEntry_t *)(msgdata.buf | |
236 | + msgdata.len); | |
718e3744 | 237 | do { |
d62a17ae | 238 | handle_route_entry(routeEntry); |
718e3744 | 239 | } while (++routeEntry < lastRouteEntry); |
240 | } | |
241 | } while (retval == MOREDATA); | |
242 | } | |
243 | ||
244 | exit: | |
d62a17ae | 245 | close(dev); |
718e3744 | 246 | } |
2232a77c | 247 | |
248 | /* Only implemented for netlink method */ | |
d62a17ae | 249 | void macfdb_read(struct zebra_ns *zns) |
2232a77c | 250 | { |
251 | } | |
252 | ||
d62a17ae | 253 | void macfdb_read_for_bridge(struct zebra_ns *zns, struct interface *ifp, |
254 | struct interface *br_if) | |
2232a77c | 255 | { |
256 | } | |
257 | ||
d62a17ae | 258 | void neigh_read(struct zebra_ns *zns) |
2232a77c | 259 | { |
260 | } | |
261 | ||
d62a17ae | 262 | void neigh_read_for_vlan(struct zebra_ns *zns, struct interface *vlan_if) |
2232a77c | 263 | { |
264 | } | |
ddfeb486 | 265 | |
942bf97b | 266 | void kernel_read_pbr_rules(struct zebra_ns *zns) |
267 | { | |
268 | } | |
269 | ||
ddfeb486 | 270 | #endif /* SUNOS_5 */ |