1 /* $OpenBSD: uipc_domain.c,v 1.69 2024/12/15 11:00:05 dlg Exp $ */ 2 /* $NetBSD: uipc_domain.c,v 1.14 1996/02/09 19:00:44 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93 33 */ 34 35 #include <sys/param.h> 36 #include <sys/socket.h> 37 #include <sys/protosw.h> 38 #include <sys/domain.h> 39 #include <sys/mbuf.h> 40 #include <sys/systm.h> 41 #include <sys/sysctl.h> 42 #include <sys/timeout.h> 43 44 #include "af_frame.h" 45 #include "bpfilter.h" 46 #include "pflow.h" 47 48 #if NAF_FRAME > 0 49 extern const struct domain framedomain; 50 #endif 51 52 const struct domain *const domains[] = { 53 #ifdef MPLS 54 &mplsdomain, 55 #endif 56 #if defined (IPSEC) || defined (TCP_SIGNATURE) 57 &pfkeydomain, 58 #endif 59 #ifdef INET6 60 &inet6domain, 61 #endif /* INET6 */ 62 &inetdomain, 63 &unixdomain, 64 &routedomain, 65 #if NAF_FRAME > 0 66 &framedomain, 67 #endif 68 NULL 69 }; 70 71 void pffasttimo(void *); 72 void pfslowtimo(void *); 73 74 void 75 domaininit(void) 76 { 77 const struct domain *dp; 78 const struct protosw *pr; 79 static struct timeout pffast_timeout; 80 static struct timeout pfslow_timeout; 81 int i; 82 83 for (i = 0; (dp = domains[i]) != NULL; i++) { 84 if (dp->dom_init) 85 (*dp->dom_init)(); 86 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 87 if (pr->pr_init) 88 (*pr->pr_init)(); 89 } 90 91 /* 92 * max_linkhdr of 64 was chosen to encompass tunnelling 93 * traffic in IP payloads, eg, by etherip(4) or gif(4), 94 * without needing to prepend an mbuf to fit those 95 * headers. 96 */ 97 if (max_linkhdr < 64) 98 max_linkhdr = 64; 99 100 max_hdr = max_linkhdr + max_protohdr; 101 timeout_set_flags(&pffast_timeout, pffasttimo, &pffast_timeout, 102 KCLOCK_NONE, TIMEOUT_PROC | TIMEOUT_MPSAFE); 103 timeout_set_flags(&pfslow_timeout, pfslowtimo, &pfslow_timeout, 104 KCLOCK_NONE, TIMEOUT_PROC | TIMEOUT_MPSAFE); 105 timeout_add(&pffast_timeout, 1); 106 timeout_add(&pfslow_timeout, 1); 107 } 108 109 const struct domain * 110 pffinddomain(int family) 111 { 112 const struct domain *dp; 113 int i; 114 115 for (i = 0; (dp = domains[i]) != NULL; i++) { 116 if (dp->dom_family == family) 117 return (dp); 118 } 119 return (NULL); 120 } 121 122 const struct protosw * 123 pffindtype(int family, int type) 124 { 125 const struct domain *dp; 126 const struct protosw *pr; 127 128 dp = pffinddomain(family); 129 if (dp == NULL) 130 return (NULL); 131 132 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 133 if (pr->pr_type && pr->pr_type == type) 134 return (pr); 135 return (NULL); 136 } 137 138 const struct protosw * 139 pffindproto(int family, int protocol, int type) 140 { 141 const struct domain *dp; 142 const struct protosw *pr; 143 const struct protosw *maybe = NULL; 144 145 if (family == PF_UNSPEC) 146 return (NULL); 147 148 dp = pffinddomain(family); 149 if (dp == NULL) 150 return (NULL); 151 152 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) { 153 if ((pr->pr_protocol == protocol) && (pr->pr_type == type)) 154 return (pr); 155 156 if (type == SOCK_RAW && pr->pr_type == SOCK_RAW && 157 pr->pr_protocol == 0 && maybe == NULL) 158 maybe = pr; 159 } 160 return (maybe); 161 } 162 163 static int 164 net_link_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, 165 void *newp, size_t newlen) 166 { 167 int node; 168 int error; 169 170 /* 171 * All sysctl names at this level are nonterminal. 172 */ 173 if (namelen < 2) 174 return (EISDIR); /* overloaded */ 175 node = name[0]; 176 177 namelen--; 178 name++; 179 180 switch (node) { 181 case NET_LINK_IFRXQ: 182 error = net_ifiq_sysctl(name, namelen, oldp, oldlenp, 183 newp, newlen); 184 break; 185 186 default: 187 error = ENOPROTOOPT; 188 break; 189 } 190 191 return (error); 192 } 193 194 int 195 net_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, 196 size_t newlen, struct proc *p) 197 { 198 const struct domain *dp; 199 const struct protosw *pr; 200 int family, protocol; 201 202 /* 203 * All sysctl names at this level are nonterminal. 204 * Usually: next two components are protocol family and protocol 205 * number, then at least one addition component. 206 */ 207 if (namelen < 2) 208 return (EISDIR); /* overloaded */ 209 family = name[0]; 210 211 if (family == PF_UNSPEC) 212 return (0); 213 if (family == PF_LINK) 214 return (net_link_sysctl(name + 1, namelen - 1, oldp, oldlenp, 215 newp, newlen)); 216 if (family == PF_UNIX) 217 return (uipc_sysctl(name + 1, namelen - 1, oldp, oldlenp, 218 newp, newlen)); 219 #if NBPFILTER > 0 220 if (family == PF_BPF) 221 return (bpf_sysctl(name + 1, namelen - 1, oldp, oldlenp, 222 newp, newlen)); 223 #endif 224 #if NPFLOW > 0 225 if (family == PF_PFLOW) 226 return (pflow_sysctl(name + 1, namelen - 1, oldp, oldlenp, 227 newp, newlen)); 228 #endif 229 #ifdef PIPEX 230 if (family == PF_PIPEX) 231 return (pipex_sysctl(name + 1, namelen - 1, oldp, oldlenp, 232 newp, newlen)); 233 #endif 234 #ifdef MPLS 235 if (family == PF_MPLS) 236 return (mpls_sysctl(name + 1, namelen - 1, oldp, oldlenp, 237 newp, newlen)); 238 #endif 239 dp = pffinddomain(family); 240 if (dp == NULL) 241 return (ENOPROTOOPT); 242 243 if (namelen < 3) 244 return (EISDIR); /* overloaded */ 245 protocol = name[1]; 246 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 247 if (pr->pr_protocol == protocol && pr->pr_sysctl) { 248 size_t savelen; 249 int error; 250 251 if ((pr->pr_flags & PR_MPSYSCTL) == 0) { 252 savelen = *oldlenp; 253 if ((error = sysctl_vslock(oldp, savelen))) 254 return (error); 255 } 256 error = (*pr->pr_sysctl)(name + 2, namelen - 2, 257 oldp, oldlenp, newp, newlen); 258 if ((pr->pr_flags & PR_MPSYSCTL) == 0) 259 sysctl_vsunlock(oldp, savelen); 260 261 return (error); 262 } 263 return (ENOPROTOOPT); 264 } 265 266 void 267 pfctlinput(int cmd, struct sockaddr *sa) 268 { 269 const struct domain *dp; 270 const struct protosw *pr; 271 int i; 272 273 NET_ASSERT_LOCKED(); 274 275 for (i = 0; (dp = domains[i]) != NULL; i++) { 276 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 277 if (pr->pr_ctlinput) 278 (*pr->pr_ctlinput)(cmd, sa, 0, NULL); 279 } 280 } 281 282 void 283 pfslowtimo(void *arg) 284 { 285 struct timeout *to = (struct timeout *)arg; 286 const struct domain *dp; 287 const struct protosw *pr; 288 int i; 289 290 for (i = 0; (dp = domains[i]) != NULL; i++) { 291 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 292 if (pr->pr_slowtimo) 293 (*pr->pr_slowtimo)(); 294 } 295 timeout_add_msec(to, 500); 296 } 297 298 void 299 pffasttimo(void *arg) 300 { 301 struct timeout *to = (struct timeout *)arg; 302 const struct domain *dp; 303 const struct protosw *pr; 304 int i; 305 306 for (i = 0; (dp = domains[i]) != NULL; i++) { 307 for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) 308 if (pr->pr_fasttimo) 309 (*pr->pr_fasttimo)(); 310 } 311 timeout_add_msec(to, 200); 312 } 313