14cf49a43SJulian Elischer /* 24cf49a43SJulian Elischer * ng_iface.c 3c398230bSWarner Losh */ 4c398230bSWarner Losh 5c398230bSWarner Losh /*- 64cf49a43SJulian Elischer * Copyright (c) 1996-1999 Whistle Communications, Inc. 74cf49a43SJulian Elischer * All rights reserved. 84cf49a43SJulian Elischer * 94cf49a43SJulian Elischer * Subject to the following obligations and disclaimer of warranty, use and 104cf49a43SJulian Elischer * redistribution of this software, in source or object code forms, with or 114cf49a43SJulian Elischer * without modifications are expressly permitted by Whistle Communications; 124cf49a43SJulian Elischer * provided, however, that: 134cf49a43SJulian Elischer * 1. Any and all reproductions of the source or object code must include the 144cf49a43SJulian Elischer * copyright notice above and the following disclaimer of warranties; and 154cf49a43SJulian Elischer * 2. No rights are granted, in any manner or form, to use Whistle 164cf49a43SJulian Elischer * Communications, Inc. trademarks, including the mark "WHISTLE 174cf49a43SJulian Elischer * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 184cf49a43SJulian Elischer * such appears in the above copyright notice or in the software. 194cf49a43SJulian Elischer * 204cf49a43SJulian Elischer * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 214cf49a43SJulian Elischer * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 224cf49a43SJulian Elischer * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 234cf49a43SJulian Elischer * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 244cf49a43SJulian Elischer * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 254cf49a43SJulian Elischer * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 264cf49a43SJulian Elischer * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 274cf49a43SJulian Elischer * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 284cf49a43SJulian Elischer * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 294cf49a43SJulian Elischer * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 304cf49a43SJulian Elischer * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 314cf49a43SJulian Elischer * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 324cf49a43SJulian Elischer * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 334cf49a43SJulian Elischer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 344cf49a43SJulian Elischer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 354cf49a43SJulian Elischer * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 364cf49a43SJulian Elischer * OF SUCH DAMAGE. 374cf49a43SJulian Elischer * 38cc3bbd68SJulian Elischer * Author: Archie Cobbs <archie@freebsd.org> 394cf49a43SJulian Elischer * 404cf49a43SJulian Elischer * $FreeBSD$ 4174f5c6aaSJulian Elischer * $Whistle: ng_iface.c,v 1.33 1999/11/01 09:24:51 julian Exp $ 424cf49a43SJulian Elischer */ 434cf49a43SJulian Elischer 444cf49a43SJulian Elischer /* 454cf49a43SJulian Elischer * This node is also a system networking interface. It has 464cf49a43SJulian Elischer * a hook for each protocol (IP, AppleTalk, IPX, etc). Packets 474cf49a43SJulian Elischer * are simply relayed between the interface and the hooks. 484cf49a43SJulian Elischer * 4915ba31b9SArchie Cobbs * Interfaces are named ng0, ng1, etc. New nodes take the 5015ba31b9SArchie Cobbs * first available interface name. 514cf49a43SJulian Elischer * 524cf49a43SJulian Elischer * This node also includes Berkeley packet filter support. 534cf49a43SJulian Elischer */ 544cf49a43SJulian Elischer 558c90439dSJonathan Lemon #include "opt_atalk.h" 568c90439dSJonathan Lemon #include "opt_inet.h" 578c90439dSJonathan Lemon #include "opt_inet6.h" 588c90439dSJonathan Lemon #include "opt_ipx.h" 598c90439dSJonathan Lemon 604cf49a43SJulian Elischer #include <sys/param.h> 614cf49a43SJulian Elischer #include <sys/systm.h> 624cf49a43SJulian Elischer #include <sys/errno.h> 634cf49a43SJulian Elischer #include <sys/kernel.h> 644cf49a43SJulian Elischer #include <sys/malloc.h> 654cf49a43SJulian Elischer #include <sys/mbuf.h> 664cf49a43SJulian Elischer #include <sys/errno.h> 671cafed39SJonathan Lemon #include <sys/random.h> 684cf49a43SJulian Elischer #include <sys/sockio.h> 694cf49a43SJulian Elischer #include <sys/socket.h> 704cf49a43SJulian Elischer #include <sys/syslog.h> 7115ba31b9SArchie Cobbs #include <sys/libkern.h> 724cf49a43SJulian Elischer 734cf49a43SJulian Elischer #include <net/if.h> 744cf49a43SJulian Elischer #include <net/if_types.h> 7515ba31b9SArchie Cobbs #include <net/bpf.h> 761cafed39SJonathan Lemon #include <net/netisr.h> 774cf49a43SJulian Elischer 78f8307e12SArchie Cobbs #include <netinet/in.h> 79f8307e12SArchie Cobbs 804cf49a43SJulian Elischer #include <netgraph/ng_message.h> 814cf49a43SJulian Elischer #include <netgraph/netgraph.h> 8215ba31b9SArchie Cobbs #include <netgraph/ng_parse.h> 834cf49a43SJulian Elischer #include <netgraph/ng_iface.h> 844cf49a43SJulian Elischer #include <netgraph/ng_cisco.h> 854cf49a43SJulian Elischer 869c8c302fSJulian Elischer #ifdef NG_SEPARATE_MALLOC 879c8c302fSJulian Elischer MALLOC_DEFINE(M_NETGRAPH_IFACE, "netgraph_iface", "netgraph iface node "); 889c8c302fSJulian Elischer #else 899c8c302fSJulian Elischer #define M_NETGRAPH_IFACE M_NETGRAPH 909c8c302fSJulian Elischer #endif 919c8c302fSJulian Elischer 924cf49a43SJulian Elischer /* This struct describes one address family */ 934cf49a43SJulian Elischer struct iffam { 9415ba31b9SArchie Cobbs sa_family_t family; /* Address family */ 9515ba31b9SArchie Cobbs const char *hookname; /* Name for hook */ 964cf49a43SJulian Elischer }; 974cf49a43SJulian Elischer typedef const struct iffam *iffam_p; 984cf49a43SJulian Elischer 9915ba31b9SArchie Cobbs /* List of address families supported by our interface */ 1004cf49a43SJulian Elischer const static struct iffam gFamilies[] = { 10115ba31b9SArchie Cobbs { AF_INET, NG_IFACE_HOOK_INET }, 10215ba31b9SArchie Cobbs { AF_INET6, NG_IFACE_HOOK_INET6 }, 10315ba31b9SArchie Cobbs { AF_APPLETALK, NG_IFACE_HOOK_ATALK }, 10415ba31b9SArchie Cobbs { AF_IPX, NG_IFACE_HOOK_IPX }, 10515ba31b9SArchie Cobbs { AF_ATM, NG_IFACE_HOOK_ATM }, 10615ba31b9SArchie Cobbs { AF_NATM, NG_IFACE_HOOK_NATM }, 1074cf49a43SJulian Elischer }; 1084cf49a43SJulian Elischer #define NUM_FAMILIES (sizeof(gFamilies) / sizeof(*gFamilies)) 1094cf49a43SJulian Elischer 1104cf49a43SJulian Elischer /* Node private data */ 1113a58352eSArchie Cobbs struct ng_iface_private { 11215ba31b9SArchie Cobbs struct ifnet *ifp; /* Our interface */ 11315ba31b9SArchie Cobbs int unit; /* Interface unit number */ 1144cf49a43SJulian Elischer node_p node; /* Our netgraph node */ 1154cf49a43SJulian Elischer hook_p hooks[NUM_FAMILIES]; /* Hook for each address family */ 1164cf49a43SJulian Elischer }; 1173a58352eSArchie Cobbs typedef struct ng_iface_private *priv_p; 1184cf49a43SJulian Elischer 1194cf49a43SJulian Elischer /* Interface methods */ 1204cf49a43SJulian Elischer static void ng_iface_start(struct ifnet *ifp); 1214cf49a43SJulian Elischer static int ng_iface_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 1224cf49a43SJulian Elischer static int ng_iface_output(struct ifnet *ifp, struct mbuf *m0, 1234cf49a43SJulian Elischer struct sockaddr *dst, struct rtentry *rt0); 12415ba31b9SArchie Cobbs static void ng_iface_bpftap(struct ifnet *ifp, 12515ba31b9SArchie Cobbs struct mbuf *m, sa_family_t family); 1264cf49a43SJulian Elischer #ifdef DEBUG 1274cf49a43SJulian Elischer static void ng_iface_print_ioctl(struct ifnet *ifp, int cmd, caddr_t data); 1284cf49a43SJulian Elischer #endif 1294cf49a43SJulian Elischer 1304cf49a43SJulian Elischer /* Netgraph methods */ 13130aabc9aSRuslan Ermilov static int ng_iface_mod_event(module_t, int, void *); 13274f5c6aaSJulian Elischer static ng_constructor_t ng_iface_constructor; 13374f5c6aaSJulian Elischer static ng_rcvmsg_t ng_iface_rcvmsg; 134069154d5SJulian Elischer static ng_shutdown_t ng_iface_shutdown; 13574f5c6aaSJulian Elischer static ng_newhook_t ng_iface_newhook; 13674f5c6aaSJulian Elischer static ng_rcvdata_t ng_iface_rcvdata; 13774f5c6aaSJulian Elischer static ng_disconnect_t ng_iface_disconnect; 1384cf49a43SJulian Elischer 1394cf49a43SJulian Elischer /* Helper stuff */ 14015ba31b9SArchie Cobbs static iffam_p get_iffam_from_af(sa_family_t family); 1414cf49a43SJulian Elischer static iffam_p get_iffam_from_hook(priv_p priv, hook_p hook); 1424cf49a43SJulian Elischer static iffam_p get_iffam_from_name(const char *name); 1434cf49a43SJulian Elischer static hook_p *get_hook_from_iffam(priv_p priv, iffam_p iffam); 1444cf49a43SJulian Elischer 14515ba31b9SArchie Cobbs /* Parse type for struct ng_cisco_ipaddr */ 146f0184ff8SArchie Cobbs static const struct ng_parse_struct_field ng_cisco_ipaddr_type_fields[] 147f0184ff8SArchie Cobbs = NG_CISCO_IPADDR_TYPE_INFO; 14815ba31b9SArchie Cobbs static const struct ng_parse_type ng_cisco_ipaddr_type = { 14915ba31b9SArchie Cobbs &ng_parse_struct_type, 150f0184ff8SArchie Cobbs &ng_cisco_ipaddr_type_fields 15115ba31b9SArchie Cobbs }; 15215ba31b9SArchie Cobbs 15315ba31b9SArchie Cobbs /* List of commands and how to convert arguments to/from ASCII */ 15415ba31b9SArchie Cobbs static const struct ng_cmdlist ng_iface_cmds[] = { 15515ba31b9SArchie Cobbs { 15615ba31b9SArchie Cobbs NGM_IFACE_COOKIE, 15715ba31b9SArchie Cobbs NGM_IFACE_GET_IFNAME, 15815ba31b9SArchie Cobbs "getifname", 15915ba31b9SArchie Cobbs NULL, 16072369c34SRuslan Ermilov &ng_parse_string_type 16115ba31b9SArchie Cobbs }, 16215ba31b9SArchie Cobbs { 16315ba31b9SArchie Cobbs NGM_IFACE_COOKIE, 16415ba31b9SArchie Cobbs NGM_IFACE_POINT2POINT, 16515ba31b9SArchie Cobbs "point2point", 16615ba31b9SArchie Cobbs NULL, 16715ba31b9SArchie Cobbs NULL 16815ba31b9SArchie Cobbs }, 16915ba31b9SArchie Cobbs { 17015ba31b9SArchie Cobbs NGM_IFACE_COOKIE, 17115ba31b9SArchie Cobbs NGM_IFACE_BROADCAST, 17215ba31b9SArchie Cobbs "broadcast", 17315ba31b9SArchie Cobbs NULL, 17415ba31b9SArchie Cobbs NULL 17515ba31b9SArchie Cobbs }, 17615ba31b9SArchie Cobbs { 17715ba31b9SArchie Cobbs NGM_CISCO_COOKIE, 17815ba31b9SArchie Cobbs NGM_CISCO_GET_IPADDR, 17915ba31b9SArchie Cobbs "getipaddr", 18015ba31b9SArchie Cobbs NULL, 18115ba31b9SArchie Cobbs &ng_cisco_ipaddr_type 18215ba31b9SArchie Cobbs }, 1831164db57SRuslan Ermilov { 1841164db57SRuslan Ermilov NGM_IFACE_COOKIE, 1851164db57SRuslan Ermilov NGM_IFACE_GET_IFINDEX, 1861164db57SRuslan Ermilov "getifindex", 1871164db57SRuslan Ermilov NULL, 1881164db57SRuslan Ermilov &ng_parse_uint32_type 1891164db57SRuslan Ermilov }, 19015ba31b9SArchie Cobbs { 0 } 19115ba31b9SArchie Cobbs }; 19215ba31b9SArchie Cobbs 1934cf49a43SJulian Elischer /* Node type descriptor */ 1944cf49a43SJulian Elischer static struct ng_type typestruct = { 195f8aae777SJulian Elischer .version = NG_ABI_VERSION, 196f8aae777SJulian Elischer .name = NG_IFACE_NODE_TYPE, 19730aabc9aSRuslan Ermilov .mod_event = ng_iface_mod_event, 198f8aae777SJulian Elischer .constructor = ng_iface_constructor, 199f8aae777SJulian Elischer .rcvmsg = ng_iface_rcvmsg, 200f8aae777SJulian Elischer .shutdown = ng_iface_shutdown, 201f8aae777SJulian Elischer .newhook = ng_iface_newhook, 202f8aae777SJulian Elischer .rcvdata = ng_iface_rcvdata, 203f8aae777SJulian Elischer .disconnect = ng_iface_disconnect, 204f8aae777SJulian Elischer .cmdlist = ng_iface_cmds, 2054cf49a43SJulian Elischer }; 2064cf49a43SJulian Elischer NETGRAPH_INIT(iface, &typestruct); 2074cf49a43SJulian Elischer 208933fedbaSGleb Smirnoff static struct unrhdr *ng_iface_unit; 2099a668fa4SRobert Watson 2104cf49a43SJulian Elischer /************************************************************************ 2114cf49a43SJulian Elischer HELPER STUFF 2124cf49a43SJulian Elischer ************************************************************************/ 2134cf49a43SJulian Elischer 2144cf49a43SJulian Elischer /* 2154cf49a43SJulian Elischer * Get the family descriptor from the family ID 2164cf49a43SJulian Elischer */ 2175908d366SStefan Farfeleder static __inline iffam_p 21815ba31b9SArchie Cobbs get_iffam_from_af(sa_family_t family) 2194cf49a43SJulian Elischer { 2204cf49a43SJulian Elischer iffam_p iffam; 2214cf49a43SJulian Elischer int k; 2224cf49a43SJulian Elischer 2234cf49a43SJulian Elischer for (k = 0; k < NUM_FAMILIES; k++) { 2244cf49a43SJulian Elischer iffam = &gFamilies[k]; 22515ba31b9SArchie Cobbs if (iffam->family == family) 2264cf49a43SJulian Elischer return (iffam); 2274cf49a43SJulian Elischer } 2284cf49a43SJulian Elischer return (NULL); 2294cf49a43SJulian Elischer } 2304cf49a43SJulian Elischer 2314cf49a43SJulian Elischer /* 2324cf49a43SJulian Elischer * Get the family descriptor from the hook 2334cf49a43SJulian Elischer */ 2345908d366SStefan Farfeleder static __inline iffam_p 2354cf49a43SJulian Elischer get_iffam_from_hook(priv_p priv, hook_p hook) 2364cf49a43SJulian Elischer { 2374cf49a43SJulian Elischer int k; 2384cf49a43SJulian Elischer 2394cf49a43SJulian Elischer for (k = 0; k < NUM_FAMILIES; k++) 2404cf49a43SJulian Elischer if (priv->hooks[k] == hook) 2414cf49a43SJulian Elischer return (&gFamilies[k]); 2424cf49a43SJulian Elischer return (NULL); 2434cf49a43SJulian Elischer } 2444cf49a43SJulian Elischer 2454cf49a43SJulian Elischer /* 2464cf49a43SJulian Elischer * Get the hook from the iffam descriptor 2474cf49a43SJulian Elischer */ 2484cf49a43SJulian Elischer 2495908d366SStefan Farfeleder static __inline hook_p * 2504cf49a43SJulian Elischer get_hook_from_iffam(priv_p priv, iffam_p iffam) 2514cf49a43SJulian Elischer { 2524cf49a43SJulian Elischer return (&priv->hooks[iffam - gFamilies]); 2534cf49a43SJulian Elischer } 2544cf49a43SJulian Elischer 2554cf49a43SJulian Elischer /* 2564cf49a43SJulian Elischer * Get the iffam descriptor from the name 2574cf49a43SJulian Elischer */ 2585908d366SStefan Farfeleder static __inline iffam_p 2594cf49a43SJulian Elischer get_iffam_from_name(const char *name) 2604cf49a43SJulian Elischer { 2614cf49a43SJulian Elischer iffam_p iffam; 2624cf49a43SJulian Elischer int k; 2634cf49a43SJulian Elischer 2644cf49a43SJulian Elischer for (k = 0; k < NUM_FAMILIES; k++) { 2654cf49a43SJulian Elischer iffam = &gFamilies[k]; 2664cf49a43SJulian Elischer if (!strcmp(iffam->hookname, name)) 2674cf49a43SJulian Elischer return (iffam); 2684cf49a43SJulian Elischer } 2694cf49a43SJulian Elischer return (NULL); 2704cf49a43SJulian Elischer } 2714cf49a43SJulian Elischer 2724cf49a43SJulian Elischer /************************************************************************ 2734cf49a43SJulian Elischer INTERFACE STUFF 2744cf49a43SJulian Elischer ************************************************************************/ 2754cf49a43SJulian Elischer 2764cf49a43SJulian Elischer /* 2774cf49a43SJulian Elischer * Process an ioctl for the virtual interface 2784cf49a43SJulian Elischer */ 2794cf49a43SJulian Elischer static int 2804cf49a43SJulian Elischer ng_iface_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 2814cf49a43SJulian Elischer { 2824cf49a43SJulian Elischer struct ifreq *const ifr = (struct ifreq *) data; 2834cf49a43SJulian Elischer int s, error = 0; 2844cf49a43SJulian Elischer 2854cf49a43SJulian Elischer #ifdef DEBUG 2864cf49a43SJulian Elischer ng_iface_print_ioctl(ifp, command, data); 2874cf49a43SJulian Elischer #endif 2884cf49a43SJulian Elischer s = splimp(); 2894cf49a43SJulian Elischer switch (command) { 2904cf49a43SJulian Elischer 2914cf49a43SJulian Elischer /* These two are mostly handled at a higher layer */ 2924cf49a43SJulian Elischer case SIOCSIFADDR: 29313f4c340SRobert Watson ifp->if_flags |= IFF_UP; 29413f4c340SRobert Watson ifp->if_drv_flags |= IFF_DRV_RUNNING; 29513f4c340SRobert Watson ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE); 2964cf49a43SJulian Elischer break; 2974cf49a43SJulian Elischer case SIOCGIFADDR: 2984cf49a43SJulian Elischer break; 2994cf49a43SJulian Elischer 3004cf49a43SJulian Elischer /* Set flags */ 3014cf49a43SJulian Elischer case SIOCSIFFLAGS: 3024cf49a43SJulian Elischer /* 3034cf49a43SJulian Elischer * If the interface is marked up and stopped, then start it. 3044cf49a43SJulian Elischer * If it is marked down and running, then stop it. 3054cf49a43SJulian Elischer */ 3064cf49a43SJulian Elischer if (ifr->ifr_flags & IFF_UP) { 30713f4c340SRobert Watson if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 30813f4c340SRobert Watson ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE); 30913f4c340SRobert Watson ifp->if_drv_flags |= IFF_DRV_RUNNING; 3104cf49a43SJulian Elischer } 3114cf49a43SJulian Elischer } else { 31213f4c340SRobert Watson if (ifp->if_drv_flags & IFF_DRV_RUNNING) 31313f4c340SRobert Watson ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | 31413f4c340SRobert Watson IFF_DRV_OACTIVE); 3154cf49a43SJulian Elischer } 3164cf49a43SJulian Elischer break; 3174cf49a43SJulian Elischer 3184cf49a43SJulian Elischer /* Set the interface MTU */ 3194cf49a43SJulian Elischer case SIOCSIFMTU: 3204cf49a43SJulian Elischer if (ifr->ifr_mtu > NG_IFACE_MTU_MAX 3214cf49a43SJulian Elischer || ifr->ifr_mtu < NG_IFACE_MTU_MIN) 3224cf49a43SJulian Elischer error = EINVAL; 3234cf49a43SJulian Elischer else 3244cf49a43SJulian Elischer ifp->if_mtu = ifr->ifr_mtu; 3254cf49a43SJulian Elischer break; 3264cf49a43SJulian Elischer 3274cf49a43SJulian Elischer /* Stuff that's not supported */ 3284cf49a43SJulian Elischer case SIOCADDMULTI: 3294cf49a43SJulian Elischer case SIOCDELMULTI: 330a770f0a4SArchie Cobbs error = 0; 331a770f0a4SArchie Cobbs break; 3324cf49a43SJulian Elischer case SIOCSIFPHYS: 3334cf49a43SJulian Elischer error = EOPNOTSUPP; 3344cf49a43SJulian Elischer break; 3354cf49a43SJulian Elischer 3364cf49a43SJulian Elischer default: 3374cf49a43SJulian Elischer error = EINVAL; 3384cf49a43SJulian Elischer break; 3394cf49a43SJulian Elischer } 3404cf49a43SJulian Elischer (void) splx(s); 3414cf49a43SJulian Elischer return (error); 3424cf49a43SJulian Elischer } 3434cf49a43SJulian Elischer 3444cf49a43SJulian Elischer /* 3454cf49a43SJulian Elischer * This routine is called to deliver a packet out the interface. 3464cf49a43SJulian Elischer * We simply look at the address family and relay the packet to 3474cf49a43SJulian Elischer * the corresponding hook, if it exists and is connected. 3484cf49a43SJulian Elischer */ 3494cf49a43SJulian Elischer 3504cf49a43SJulian Elischer static int 3514cf49a43SJulian Elischer ng_iface_output(struct ifnet *ifp, struct mbuf *m, 3524cf49a43SJulian Elischer struct sockaddr *dst, struct rtentry *rt0) 3534cf49a43SJulian Elischer { 3544cf49a43SJulian Elischer const priv_p priv = (priv_p) ifp->if_softc; 3554cf49a43SJulian Elischer const iffam_p iffam = get_iffam_from_af(dst->sa_family); 3564cf49a43SJulian Elischer int len, error = 0; 35701399f34SDavid Malone u_int32_t af; 3584cf49a43SJulian Elischer 3594cf49a43SJulian Elischer /* Check interface flags */ 36013f4c340SRobert Watson if (!((ifp->if_flags & IFF_UP) && 36113f4c340SRobert Watson (ifp->if_drv_flags & IFF_DRV_RUNNING))) { 3624cf49a43SJulian Elischer m_freem(m); 3634cf49a43SJulian Elischer return (ENETDOWN); 3644cf49a43SJulian Elischer } 3654cf49a43SJulian Elischer 36601399f34SDavid Malone /* BPF writes need to be handled specially. */ 36715ba31b9SArchie Cobbs if (dst->sa_family == AF_UNSPEC) { 36801399f34SDavid Malone bcopy(dst->sa_data, &af, sizeof(af)); 36901399f34SDavid Malone dst->sa_family = af; 37015ba31b9SArchie Cobbs } 37115ba31b9SArchie Cobbs 3724cf49a43SJulian Elischer /* Berkeley packet filter */ 3734cf49a43SJulian Elischer ng_iface_bpftap(ifp, m, dst->sa_family); 3744cf49a43SJulian Elischer 3754cf49a43SJulian Elischer /* Check address family to determine hook (if known) */ 3764cf49a43SJulian Elischer if (iffam == NULL) { 3774cf49a43SJulian Elischer m_freem(m); 3789bf40edeSBrooks Davis log(LOG_WARNING, "%s: can't handle af%d\n", 3799bf40edeSBrooks Davis ifp->if_xname, (int)dst->sa_family); 3804cf49a43SJulian Elischer return (EAFNOSUPPORT); 3814cf49a43SJulian Elischer } 3824cf49a43SJulian Elischer 3834cf49a43SJulian Elischer /* Copy length before the mbuf gets invalidated */ 3844cf49a43SJulian Elischer len = m->m_pkthdr.len; 3854cf49a43SJulian Elischer 3864cf49a43SJulian Elischer /* Send packet; if hook is not connected, mbuf will get freed. */ 3873ca24c28SJulian Elischer NG_SEND_DATA_ONLY(error, *get_hook_from_iffam(priv, iffam), m); 3884cf49a43SJulian Elischer 3894cf49a43SJulian Elischer /* Update stats */ 3904cf49a43SJulian Elischer if (error == 0) { 3914cf49a43SJulian Elischer ifp->if_obytes += len; 3924cf49a43SJulian Elischer ifp->if_opackets++; 3934cf49a43SJulian Elischer } 3944cf49a43SJulian Elischer return (error); 3954cf49a43SJulian Elischer } 3964cf49a43SJulian Elischer 3974cf49a43SJulian Elischer /* 3984cf49a43SJulian Elischer * This routine should never be called 3994cf49a43SJulian Elischer */ 4004cf49a43SJulian Elischer 4014cf49a43SJulian Elischer static void 4024cf49a43SJulian Elischer ng_iface_start(struct ifnet *ifp) 4034cf49a43SJulian Elischer { 40429e1b85fSBrooks Davis if_printf(ifp, "%s called?", __func__); 4054cf49a43SJulian Elischer } 4064cf49a43SJulian Elischer 4074cf49a43SJulian Elischer /* 4084cf49a43SJulian Elischer * Flash a packet by the BPF (requires prepending 4 byte AF header) 4094cf49a43SJulian Elischer * Note the phoney mbuf; this is OK because BPF treats it read-only. 4104cf49a43SJulian Elischer */ 4114cf49a43SJulian Elischer static void 41215ba31b9SArchie Cobbs ng_iface_bpftap(struct ifnet *ifp, struct mbuf *m, sa_family_t family) 4134cf49a43SJulian Elischer { 4146e551fb6SDavid E. O'Brien KASSERT(family != AF_UNSPEC, ("%s: family=AF_UNSPEC", __func__)); 41515ba31b9SArchie Cobbs if (ifp->if_bpf != NULL) { 416437ffe18SSam Leffler int32_t family4 = (int32_t)family; 417437ffe18SSam Leffler bpf_mtap2(ifp->if_bpf, &family4, sizeof(family4), m); 4184cf49a43SJulian Elischer } 419382667d3SJulian Elischer } 4204cf49a43SJulian Elischer 4214cf49a43SJulian Elischer #ifdef DEBUG 4224cf49a43SJulian Elischer /* 4234cf49a43SJulian Elischer * Display an ioctl to the virtual interface 4244cf49a43SJulian Elischer */ 4254cf49a43SJulian Elischer 4264cf49a43SJulian Elischer static void 4274cf49a43SJulian Elischer ng_iface_print_ioctl(struct ifnet *ifp, int command, caddr_t data) 4284cf49a43SJulian Elischer { 4294cf49a43SJulian Elischer char *str; 4304cf49a43SJulian Elischer 4314cf49a43SJulian Elischer switch (command & IOC_DIRMASK) { 4324cf49a43SJulian Elischer case IOC_VOID: 4334cf49a43SJulian Elischer str = "IO"; 4344cf49a43SJulian Elischer break; 4354cf49a43SJulian Elischer case IOC_OUT: 4364cf49a43SJulian Elischer str = "IOR"; 4374cf49a43SJulian Elischer break; 4384cf49a43SJulian Elischer case IOC_IN: 4394cf49a43SJulian Elischer str = "IOW"; 4404cf49a43SJulian Elischer break; 4414cf49a43SJulian Elischer case IOC_INOUT: 4424cf49a43SJulian Elischer str = "IORW"; 4434cf49a43SJulian Elischer break; 4444cf49a43SJulian Elischer default: 4454cf49a43SJulian Elischer str = "IO??"; 4464cf49a43SJulian Elischer } 4479bf40edeSBrooks Davis log(LOG_DEBUG, "%s: %s('%c', %d, char[%d])\n", 4489bf40edeSBrooks Davis ifp->if_xname, 4494cf49a43SJulian Elischer str, 4504cf49a43SJulian Elischer IOCGROUP(command), 4514cf49a43SJulian Elischer command & 0xff, 4524cf49a43SJulian Elischer IOCPARM_LEN(command)); 4534cf49a43SJulian Elischer } 4544cf49a43SJulian Elischer #endif /* DEBUG */ 4554cf49a43SJulian Elischer 4564cf49a43SJulian Elischer /************************************************************************ 4574cf49a43SJulian Elischer NETGRAPH NODE STUFF 4584cf49a43SJulian Elischer ************************************************************************/ 4594cf49a43SJulian Elischer 4604cf49a43SJulian Elischer /* 4614cf49a43SJulian Elischer * Constructor for a node 4624cf49a43SJulian Elischer */ 4634cf49a43SJulian Elischer static int 464069154d5SJulian Elischer ng_iface_constructor(node_p node) 4654cf49a43SJulian Elischer { 4664cf49a43SJulian Elischer struct ifnet *ifp; 4674cf49a43SJulian Elischer priv_p priv; 4684cf49a43SJulian Elischer 4694cf49a43SJulian Elischer /* Allocate node and interface private structures */ 4709c8c302fSJulian Elischer MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH_IFACE, M_NOWAIT|M_ZERO); 4714cf49a43SJulian Elischer if (priv == NULL) 4724cf49a43SJulian Elischer return (ENOMEM); 473fc74a9f9SBrooks Davis ifp = if_alloc(IFT_PROPVIRTUAL); 4744cf49a43SJulian Elischer if (ifp == NULL) { 4759c8c302fSJulian Elischer FREE(priv, M_NETGRAPH_IFACE); 4764cf49a43SJulian Elischer return (ENOMEM); 4774cf49a43SJulian Elischer } 4784cf49a43SJulian Elischer 4794cf49a43SJulian Elischer /* Link them together */ 4804cf49a43SJulian Elischer ifp->if_softc = priv; 4814cf49a43SJulian Elischer priv->ifp = ifp; 4824cf49a43SJulian Elischer 48315ba31b9SArchie Cobbs /* Get an interface unit number */ 484933fedbaSGleb Smirnoff priv->unit = alloc_unr(ng_iface_unit); 48515ba31b9SArchie Cobbs 4864cf49a43SJulian Elischer /* Link together node and private info */ 48730400f03SJulian Elischer NG_NODE_SET_PRIVATE(node, priv); 4884cf49a43SJulian Elischer priv->node = node; 4894cf49a43SJulian Elischer 4904cf49a43SJulian Elischer /* Initialize interface structure */ 4919bf40edeSBrooks Davis if_initname(ifp, NG_IFACE_IFACE_NAME, priv->unit); 4924cf49a43SJulian Elischer ifp->if_output = ng_iface_output; 4934cf49a43SJulian Elischer ifp->if_start = ng_iface_start; 4944cf49a43SJulian Elischer ifp->if_ioctl = ng_iface_ioctl; 4954cf49a43SJulian Elischer ifp->if_watchdog = NULL; 4964cf49a43SJulian Elischer ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 4974cf49a43SJulian Elischer ifp->if_mtu = NG_IFACE_MTU_DEFAULT; 498a770f0a4SArchie Cobbs ifp->if_flags = (IFF_SIMPLEX|IFF_POINTOPOINT|IFF_NOARP|IFF_MULTICAST); 4994cf49a43SJulian Elischer ifp->if_type = IFT_PROPVIRTUAL; /* XXX */ 5004cf49a43SJulian Elischer ifp->if_addrlen = 0; /* XXX */ 5014cf49a43SJulian Elischer ifp->if_hdrlen = 0; /* XXX */ 5024cf49a43SJulian Elischer ifp->if_baudrate = 64000; /* XXX */ 5034cf49a43SJulian Elischer 5044cf49a43SJulian Elischer /* Give this node the same name as the interface (if possible) */ 50572369c34SRuslan Ermilov if (ng_name_node(node, ifp->if_xname) != 0) 50672369c34SRuslan Ermilov log(LOG_WARNING, "%s: can't acquire netgraph name\n", 50772369c34SRuslan Ermilov ifp->if_xname); 5084cf49a43SJulian Elischer 5094cf49a43SJulian Elischer /* Attach the interface */ 5104cf49a43SJulian Elischer if_attach(ifp); 51101399f34SDavid Malone bpfattach(ifp, DLT_NULL, sizeof(u_int32_t)); 5124cf49a43SJulian Elischer 5134cf49a43SJulian Elischer /* Done */ 5144cf49a43SJulian Elischer return (0); 5154cf49a43SJulian Elischer } 5164cf49a43SJulian Elischer 5174cf49a43SJulian Elischer /* 5184cf49a43SJulian Elischer * Give our ok for a hook to be added 5194cf49a43SJulian Elischer */ 5204cf49a43SJulian Elischer static int 5214cf49a43SJulian Elischer ng_iface_newhook(node_p node, hook_p hook, const char *name) 5224cf49a43SJulian Elischer { 5234cf49a43SJulian Elischer const iffam_p iffam = get_iffam_from_name(name); 5244cf49a43SJulian Elischer hook_p *hookptr; 5254cf49a43SJulian Elischer 5264cf49a43SJulian Elischer if (iffam == NULL) 5274cf49a43SJulian Elischer return (EPFNOSUPPORT); 52830400f03SJulian Elischer hookptr = get_hook_from_iffam(NG_NODE_PRIVATE(node), iffam); 5294cf49a43SJulian Elischer if (*hookptr != NULL) 5304cf49a43SJulian Elischer return (EISCONN); 5314cf49a43SJulian Elischer *hookptr = hook; 5324cf49a43SJulian Elischer return (0); 5334cf49a43SJulian Elischer } 5344cf49a43SJulian Elischer 5354cf49a43SJulian Elischer /* 5364cf49a43SJulian Elischer * Receive a control message 5374cf49a43SJulian Elischer */ 5384cf49a43SJulian Elischer static int 539069154d5SJulian Elischer ng_iface_rcvmsg(node_p node, item_p item, hook_p lasthook) 5404cf49a43SJulian Elischer { 54130400f03SJulian Elischer const priv_p priv = NG_NODE_PRIVATE(node); 5424cf49a43SJulian Elischer struct ifnet *const ifp = priv->ifp; 5434cf49a43SJulian Elischer struct ng_mesg *resp = NULL; 5444cf49a43SJulian Elischer int error = 0; 545069154d5SJulian Elischer struct ng_mesg *msg; 5464cf49a43SJulian Elischer 547069154d5SJulian Elischer NGI_GET_MSG(item, msg); 5484cf49a43SJulian Elischer switch (msg->header.typecookie) { 5494cf49a43SJulian Elischer case NGM_IFACE_COOKIE: 5504cf49a43SJulian Elischer switch (msg->header.cmd) { 5514cf49a43SJulian Elischer case NGM_IFACE_GET_IFNAME: 55272369c34SRuslan Ermilov NG_MKRESPONSE(resp, msg, IFNAMSIZ, M_NOWAIT); 5534cf49a43SJulian Elischer if (resp == NULL) { 5544cf49a43SJulian Elischer error = ENOMEM; 5554cf49a43SJulian Elischer break; 5564cf49a43SJulian Elischer } 55772369c34SRuslan Ermilov strlcpy(resp->data, ifp->if_xname, IFNAMSIZ); 5584cf49a43SJulian Elischer break; 5594cf49a43SJulian Elischer 56015ba31b9SArchie Cobbs case NGM_IFACE_POINT2POINT: 56115ba31b9SArchie Cobbs case NGM_IFACE_BROADCAST: 5624cf49a43SJulian Elischer { 5634cf49a43SJulian Elischer 56415ba31b9SArchie Cobbs /* Deny request if interface is UP */ 56515ba31b9SArchie Cobbs if ((ifp->if_flags & IFF_UP) != 0) 56615ba31b9SArchie Cobbs return (EBUSY); 5674cf49a43SJulian Elischer 56815ba31b9SArchie Cobbs /* Change flags */ 56915ba31b9SArchie Cobbs switch (msg->header.cmd) { 57015ba31b9SArchie Cobbs case NGM_IFACE_POINT2POINT: 57115ba31b9SArchie Cobbs ifp->if_flags |= IFF_POINTOPOINT; 57215ba31b9SArchie Cobbs ifp->if_flags &= ~IFF_BROADCAST; 57315ba31b9SArchie Cobbs break; 57415ba31b9SArchie Cobbs case NGM_IFACE_BROADCAST: 57515ba31b9SArchie Cobbs ifp->if_flags &= ~IFF_POINTOPOINT; 57615ba31b9SArchie Cobbs ifp->if_flags |= IFF_BROADCAST; 5774cf49a43SJulian Elischer break; 5784cf49a43SJulian Elischer } 5794cf49a43SJulian Elischer break; 5804cf49a43SJulian Elischer } 5814cf49a43SJulian Elischer 5821164db57SRuslan Ermilov case NGM_IFACE_GET_IFINDEX: 5831164db57SRuslan Ermilov NG_MKRESPONSE(resp, msg, sizeof(uint32_t), M_NOWAIT); 5841164db57SRuslan Ermilov if (resp == NULL) { 5851164db57SRuslan Ermilov error = ENOMEM; 5861164db57SRuslan Ermilov break; 5871164db57SRuslan Ermilov } 5881164db57SRuslan Ermilov *((uint32_t *)resp->data) = priv->ifp->if_index; 5891164db57SRuslan Ermilov break; 5901164db57SRuslan Ermilov 5914cf49a43SJulian Elischer default: 5924cf49a43SJulian Elischer error = EINVAL; 5934cf49a43SJulian Elischer break; 5944cf49a43SJulian Elischer } 5954cf49a43SJulian Elischer break; 5964cf49a43SJulian Elischer case NGM_CISCO_COOKIE: 5974cf49a43SJulian Elischer switch (msg->header.cmd) { 5984cf49a43SJulian Elischer case NGM_CISCO_GET_IPADDR: /* we understand this too */ 5994cf49a43SJulian Elischer { 6004cf49a43SJulian Elischer struct ifaddr *ifa; 6014cf49a43SJulian Elischer 6024cf49a43SJulian Elischer /* Return the first configured IP address */ 6034cf49a43SJulian Elischer TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { 60415ba31b9SArchie Cobbs struct ng_cisco_ipaddr *ips; 6054cf49a43SJulian Elischer 6064cf49a43SJulian Elischer if (ifa->ifa_addr->sa_family != AF_INET) 6074cf49a43SJulian Elischer continue; 60815ba31b9SArchie Cobbs NG_MKRESPONSE(resp, msg, sizeof(ips), M_NOWAIT); 6094cf49a43SJulian Elischer if (resp == NULL) { 6104cf49a43SJulian Elischer error = ENOMEM; 6114cf49a43SJulian Elischer break; 6124cf49a43SJulian Elischer } 61315ba31b9SArchie Cobbs ips = (struct ng_cisco_ipaddr *)resp->data; 61415ba31b9SArchie Cobbs ips->ipaddr = ((struct sockaddr_in *) 6154cf49a43SJulian Elischer ifa->ifa_addr)->sin_addr; 61615ba31b9SArchie Cobbs ips->netmask = ((struct sockaddr_in *) 6174cf49a43SJulian Elischer ifa->ifa_netmask)->sin_addr; 6184cf49a43SJulian Elischer break; 6194cf49a43SJulian Elischer } 6204cf49a43SJulian Elischer 6214cf49a43SJulian Elischer /* No IP addresses on this interface? */ 6224cf49a43SJulian Elischer if (ifa == NULL) 6234cf49a43SJulian Elischer error = EADDRNOTAVAIL; 6244cf49a43SJulian Elischer break; 6254cf49a43SJulian Elischer } 6264cf49a43SJulian Elischer default: 6274cf49a43SJulian Elischer error = EINVAL; 6284cf49a43SJulian Elischer break; 6294cf49a43SJulian Elischer } 6304cf49a43SJulian Elischer break; 63128b24b7bSGleb Smirnoff case NGM_FLOW_COOKIE: 63228b24b7bSGleb Smirnoff switch (msg->header.cmd) { 63328b24b7bSGleb Smirnoff case NGM_LINK_IS_UP: 63413f4c340SRobert Watson ifp->if_drv_flags |= IFF_DRV_RUNNING; 63528b24b7bSGleb Smirnoff break; 63628b24b7bSGleb Smirnoff case NGM_LINK_IS_DOWN: 63713f4c340SRobert Watson ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 63828b24b7bSGleb Smirnoff break; 63928b24b7bSGleb Smirnoff default: 64028b24b7bSGleb Smirnoff break; 64128b24b7bSGleb Smirnoff } 64228b24b7bSGleb Smirnoff break; 6434cf49a43SJulian Elischer default: 6444cf49a43SJulian Elischer error = EINVAL; 6454cf49a43SJulian Elischer break; 6464cf49a43SJulian Elischer } 647069154d5SJulian Elischer NG_RESPOND_MSG(error, node, item, resp); 648069154d5SJulian Elischer NG_FREE_MSG(msg); 6494cf49a43SJulian Elischer return (error); 6504cf49a43SJulian Elischer } 6514cf49a43SJulian Elischer 6524cf49a43SJulian Elischer /* 6534cf49a43SJulian Elischer * Recive data from a hook. Pass the packet to the correct input routine. 6544cf49a43SJulian Elischer */ 6554cf49a43SJulian Elischer static int 656069154d5SJulian Elischer ng_iface_rcvdata(hook_p hook, item_p item) 6574cf49a43SJulian Elischer { 65830400f03SJulian Elischer const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 6594cf49a43SJulian Elischer const iffam_p iffam = get_iffam_from_hook(priv, hook); 6604cf49a43SJulian Elischer struct ifnet *const ifp = priv->ifp; 661069154d5SJulian Elischer struct mbuf *m; 6621cafed39SJonathan Lemon int isr; 6634cf49a43SJulian Elischer 664069154d5SJulian Elischer NGI_GET_M(item, m); 665069154d5SJulian Elischer NG_FREE_ITEM(item); 6664cf49a43SJulian Elischer /* Sanity checks */ 6676e551fb6SDavid E. O'Brien KASSERT(iffam != NULL, ("%s: iffam", __func__)); 668fe584538SDag-Erling Smørgrav M_ASSERTPKTHDR(m); 6694cf49a43SJulian Elischer if ((ifp->if_flags & IFF_UP) == 0) { 670069154d5SJulian Elischer NG_FREE_M(m); 6714cf49a43SJulian Elischer return (ENETDOWN); 6724cf49a43SJulian Elischer } 6734cf49a43SJulian Elischer 6744cf49a43SJulian Elischer /* Update interface stats */ 6754cf49a43SJulian Elischer ifp->if_ipackets++; 6764cf49a43SJulian Elischer ifp->if_ibytes += m->m_pkthdr.len; 6774cf49a43SJulian Elischer 6784cf49a43SJulian Elischer /* Note receiving interface */ 6794cf49a43SJulian Elischer m->m_pkthdr.rcvif = ifp; 6804cf49a43SJulian Elischer 6814cf49a43SJulian Elischer /* Berkeley packet filter */ 68215ba31b9SArchie Cobbs ng_iface_bpftap(ifp, m, iffam->family); 6834cf49a43SJulian Elischer 68415ba31b9SArchie Cobbs /* Send packet */ 6851cafed39SJonathan Lemon switch (iffam->family) { 6861cafed39SJonathan Lemon #ifdef INET 6871cafed39SJonathan Lemon case AF_INET: 6881cafed39SJonathan Lemon isr = NETISR_IP; 6891cafed39SJonathan Lemon break; 6901cafed39SJonathan Lemon #endif 6911cafed39SJonathan Lemon #ifdef INET6 6921cafed39SJonathan Lemon case AF_INET6: 6931cafed39SJonathan Lemon isr = NETISR_IPV6; 6941cafed39SJonathan Lemon break; 6951cafed39SJonathan Lemon #endif 6961cafed39SJonathan Lemon #ifdef IPX 6971cafed39SJonathan Lemon case AF_IPX: 6981cafed39SJonathan Lemon isr = NETISR_IPX; 6991cafed39SJonathan Lemon break; 7001cafed39SJonathan Lemon #endif 7011cafed39SJonathan Lemon #ifdef NETATALK 7021cafed39SJonathan Lemon case AF_APPLETALK: 7031cafed39SJonathan Lemon isr = NETISR_ATALK2; 7041cafed39SJonathan Lemon break; 7051cafed39SJonathan Lemon #endif 7061cafed39SJonathan Lemon default: 7071cafed39SJonathan Lemon m_freem(m); 7081cafed39SJonathan Lemon return (EAFNOSUPPORT); 7091cafed39SJonathan Lemon } 7101cafed39SJonathan Lemon /* First chunk of an mbuf contains good junk */ 7111cafed39SJonathan Lemon if (harvest.point_to_point) 7121cafed39SJonathan Lemon random_harvest(m, 16, 3, 0, RANDOM_NET); 7131cafed39SJonathan Lemon netisr_dispatch(isr, m); 7141cafed39SJonathan Lemon return (0); 7154cf49a43SJulian Elischer } 7164cf49a43SJulian Elischer 7174cf49a43SJulian Elischer /* 71815ba31b9SArchie Cobbs * Shutdown and remove the node and its associated interface. 7194cf49a43SJulian Elischer */ 7204cf49a43SJulian Elischer static int 721069154d5SJulian Elischer ng_iface_shutdown(node_p node) 7224cf49a43SJulian Elischer { 72330400f03SJulian Elischer const priv_p priv = NG_NODE_PRIVATE(node); 7244cf49a43SJulian Elischer 725382379f8SArchie Cobbs bpfdetach(priv->ifp); 72615ba31b9SArchie Cobbs if_detach(priv->ifp); 727fc74a9f9SBrooks Davis if_free(priv->ifp); 72815ba31b9SArchie Cobbs priv->ifp = NULL; 729933fedbaSGleb Smirnoff free_unr(ng_iface_unit, priv->unit); 7309c8c302fSJulian Elischer FREE(priv, M_NETGRAPH_IFACE); 73130400f03SJulian Elischer NG_NODE_SET_PRIVATE(node, NULL); 73230400f03SJulian Elischer NG_NODE_UNREF(node); 7334cf49a43SJulian Elischer return (0); 7344cf49a43SJulian Elischer } 7354cf49a43SJulian Elischer 7364cf49a43SJulian Elischer /* 73715ba31b9SArchie Cobbs * Hook disconnection. Note that we do *not* shutdown when all 73815ba31b9SArchie Cobbs * hooks have been disconnected. 7394cf49a43SJulian Elischer */ 7404cf49a43SJulian Elischer static int 7414cf49a43SJulian Elischer ng_iface_disconnect(hook_p hook) 7424cf49a43SJulian Elischer { 74330400f03SJulian Elischer const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 7444cf49a43SJulian Elischer const iffam_p iffam = get_iffam_from_hook(priv, hook); 7454cf49a43SJulian Elischer 7464cf49a43SJulian Elischer if (iffam == NULL) 7476e551fb6SDavid E. O'Brien panic(__func__); 7484cf49a43SJulian Elischer *get_hook_from_iffam(priv, iffam) = NULL; 7494cf49a43SJulian Elischer return (0); 7504cf49a43SJulian Elischer } 7514cf49a43SJulian Elischer 75230aabc9aSRuslan Ermilov /* 75330aabc9aSRuslan Ermilov * Handle loading and unloading for this node type. 75430aabc9aSRuslan Ermilov */ 75530aabc9aSRuslan Ermilov static int 75630aabc9aSRuslan Ermilov ng_iface_mod_event(module_t mod, int event, void *data) 75730aabc9aSRuslan Ermilov { 75830aabc9aSRuslan Ermilov int error = 0; 75930aabc9aSRuslan Ermilov 76030aabc9aSRuslan Ermilov switch (event) { 76130aabc9aSRuslan Ermilov case MOD_LOAD: 762933fedbaSGleb Smirnoff ng_iface_unit = new_unrhdr(0, 0xffff, NULL); 76330aabc9aSRuslan Ermilov break; 76430aabc9aSRuslan Ermilov case MOD_UNLOAD: 765933fedbaSGleb Smirnoff delete_unrhdr(ng_iface_unit); 76630aabc9aSRuslan Ermilov break; 76730aabc9aSRuslan Ermilov default: 76830aabc9aSRuslan Ermilov error = EOPNOTSUPP; 76930aabc9aSRuslan Ermilov break; 77030aabc9aSRuslan Ermilov } 77130aabc9aSRuslan Ermilov return (error); 77230aabc9aSRuslan Ermilov } 773