152419Sjulian/* 252419Sjulian * ng_pppoe.c 3139823Simp */ 4139823Simp 5139823Simp/*- 652419Sjulian * Copyright (c) 1996-1999 Whistle Communications, Inc. 752419Sjulian * All rights reserved. 852419Sjulian * 952419Sjulian * Subject to the following obligations and disclaimer of warranty, use and 1052419Sjulian * redistribution of this software, in source or object code forms, with or 1152419Sjulian * without modifications are expressly permitted by Whistle Communications; 1252419Sjulian * provided, however, that: 1352419Sjulian * 1. Any and all reproductions of the source or object code must include the 1452419Sjulian * copyright notice above and the following disclaimer of warranties; and 1552419Sjulian * 2. No rights are granted, in any manner or form, to use Whistle 1652419Sjulian * Communications, Inc. trademarks, including the mark "WHISTLE 1752419Sjulian * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 1852419Sjulian * such appears in the above copyright notice or in the software. 1952419Sjulian * 2052419Sjulian * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 2152419Sjulian * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 2252419Sjulian * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 2352419Sjulian * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 2452419Sjulian * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 2552419Sjulian * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 2652419Sjulian * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 2752419Sjulian * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 2852419Sjulian * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 2952419Sjulian * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 3052419Sjulian * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 3152419Sjulian * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 3252419Sjulian * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 3352419Sjulian * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3452419Sjulian * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 3552419Sjulian * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 3652419Sjulian * OF SUCH DAMAGE. 3752419Sjulian * 3867506Sjulian * Author: Julian Elischer <julian@freebsd.org> 3952419Sjulian * 4052419Sjulian * $FreeBSD$ 4152752Sjulian * $Whistle: ng_pppoe.c,v 1.10 1999/11/01 09:24:52 julian Exp $ 4252419Sjulian */ 4352419Sjulian 4452419Sjulian#include <sys/param.h> 4552419Sjulian#include <sys/systm.h> 4652419Sjulian#include <sys/kernel.h> 47154604Sglebius#include <sys/ktr.h> 4852419Sjulian#include <sys/mbuf.h> 4952419Sjulian#include <sys/malloc.h> 5052419Sjulian#include <sys/errno.h> 51161034Sglebius#include <sys/syslog.h> 5252419Sjulian#include <net/ethernet.h> 5352419Sjulian 5452419Sjulian#include <netgraph/ng_message.h> 5552419Sjulian#include <netgraph/netgraph.h> 5668031Sbrian#include <netgraph/ng_parse.h> 5752419Sjulian#include <netgraph/ng_pppoe.h> 58161117Sglebius#include <netgraph/ng_ether.h> 5952419Sjulian 6070870Sjulian#ifdef NG_SEPARATE_MALLOC 61227293Sedstatic MALLOC_DEFINE(M_NETGRAPH_PPPOE, "netgraph_pppoe", "netgraph pppoe node"); 6270870Sjulian#else 6370870Sjulian#define M_NETGRAPH_PPPOE M_NETGRAPH 6470870Sjulian#endif 6570870Sjulian 6653405Sarchie#define SIGNOFF "session closed" 6753405Sarchie 6852419Sjulian/* 6952419Sjulian * This section contains the netgraph method declarations for the 7072946Sjulian * pppoe node. These methods define the netgraph pppoe 'type'. 7152419Sjulian */ 7252419Sjulian 7352752Sjulianstatic ng_constructor_t ng_pppoe_constructor; 7452752Sjulianstatic ng_rcvmsg_t ng_pppoe_rcvmsg; 7570700Sjulianstatic ng_shutdown_t ng_pppoe_shutdown; 7652752Sjulianstatic ng_newhook_t ng_pppoe_newhook; 77161117Sglebiusstatic ng_connect_t ng_pppoe_connect; 7852752Sjulianstatic ng_rcvdata_t ng_pppoe_rcvdata; 79172629Smavstatic ng_rcvdata_t ng_pppoe_rcvdata_ether; 80172629Smavstatic ng_rcvdata_t ng_pppoe_rcvdata_debug; 8152752Sjulianstatic ng_disconnect_t ng_pppoe_disconnect; 8252419Sjulian 8368031Sbrian/* Parse type for struct ngpppoe_init_data */ 8497685Sarchiestatic const struct ng_parse_struct_field ngpppoe_init_data_type_fields[] 8568031Sbrian = NG_PPPOE_INIT_DATA_TYPE_INFO; 8668845Sbrianstatic const struct ng_parse_type ngpppoe_init_data_state_type = { 8768031Sbrian &ng_parse_struct_type, 8897685Sarchie &ngpppoe_init_data_type_fields 8968031Sbrian}; 9068031Sbrian 9168031Sbrian/* Parse type for struct ngpppoe_sts */ 9297685Sarchiestatic const struct ng_parse_struct_field ng_pppoe_sts_type_fields[] 9368031Sbrian = NG_PPPOE_STS_TYPE_INFO; 9468031Sbrianstatic const struct ng_parse_type ng_pppoe_sts_state_type = { 9568031Sbrian &ng_parse_struct_type, 9697685Sarchie &ng_pppoe_sts_type_fields 9768031Sbrian}; 9868031Sbrian 9968031Sbrian/* List of commands and how to convert arguments to/from ASCII */ 10068031Sbrianstatic const struct ng_cmdlist ng_pppoe_cmds[] = { 10168031Sbrian { 10268031Sbrian NGM_PPPOE_COOKIE, 10368031Sbrian NGM_PPPOE_CONNECT, 10468031Sbrian "pppoe_connect", 10568845Sbrian &ngpppoe_init_data_state_type, 10668031Sbrian NULL 10768031Sbrian }, 10868031Sbrian { 10968031Sbrian NGM_PPPOE_COOKIE, 11068031Sbrian NGM_PPPOE_LISTEN, 11168031Sbrian "pppoe_listen", 11268845Sbrian &ngpppoe_init_data_state_type, 11368031Sbrian NULL 11468031Sbrian }, 11568031Sbrian { 11668031Sbrian NGM_PPPOE_COOKIE, 11768031Sbrian NGM_PPPOE_OFFER, 11868031Sbrian "pppoe_offer", 11968845Sbrian &ngpppoe_init_data_state_type, 12068031Sbrian NULL 12168031Sbrian }, 12268031Sbrian { 12368031Sbrian NGM_PPPOE_COOKIE, 12469922Sjulian NGM_PPPOE_SERVICE, 12569922Sjulian "pppoe_service", 12669922Sjulian &ngpppoe_init_data_state_type, 12769922Sjulian NULL 12869922Sjulian }, 12969922Sjulian { 13069922Sjulian NGM_PPPOE_COOKIE, 13168031Sbrian NGM_PPPOE_SUCCESS, 13268031Sbrian "pppoe_success", 13368031Sbrian &ng_pppoe_sts_state_type, 13468031Sbrian NULL 13568031Sbrian }, 13668031Sbrian { 13768031Sbrian NGM_PPPOE_COOKIE, 13868031Sbrian NGM_PPPOE_FAIL, 13968031Sbrian "pppoe_fail", 14068031Sbrian &ng_pppoe_sts_state_type, 14168031Sbrian NULL 14268031Sbrian }, 14368031Sbrian { 14468031Sbrian NGM_PPPOE_COOKIE, 14568031Sbrian NGM_PPPOE_CLOSE, 14668031Sbrian "pppoe_close", 14768031Sbrian &ng_pppoe_sts_state_type, 14868031Sbrian NULL 14968031Sbrian }, 150132703Sglebius { 151132703Sglebius NGM_PPPOE_COOKIE, 152132703Sglebius NGM_PPPOE_SETMODE, 153132703Sglebius "pppoe_setmode", 154132703Sglebius &ng_parse_string_type, 155132703Sglebius NULL 156132703Sglebius }, 157132703Sglebius { 158132703Sglebius NGM_PPPOE_COOKIE, 159132703Sglebius NGM_PPPOE_GETMODE, 160132703Sglebius "pppoe_getmode", 161132703Sglebius NULL, 162132703Sglebius &ng_parse_string_type 163132703Sglebius }, 164161117Sglebius { 165161117Sglebius NGM_PPPOE_COOKIE, 166161117Sglebius NGM_PPPOE_SETENADDR, 167161117Sglebius "setenaddr", 168161117Sglebius &ng_parse_enaddr_type, 169161117Sglebius NULL 170161117Sglebius }, 17168031Sbrian { 0 } 17268031Sbrian}; 17368031Sbrian 17452419Sjulian/* Netgraph node type descriptor */ 17552419Sjulianstatic struct ng_type typestruct = { 176129823Sjulian .version = NG_ABI_VERSION, 177129823Sjulian .name = NG_PPPOE_NODE_TYPE, 178129823Sjulian .constructor = ng_pppoe_constructor, 179129823Sjulian .rcvmsg = ng_pppoe_rcvmsg, 180129823Sjulian .shutdown = ng_pppoe_shutdown, 181129823Sjulian .newhook = ng_pppoe_newhook, 182161117Sglebius .connect = ng_pppoe_connect, 183129823Sjulian .rcvdata = ng_pppoe_rcvdata, 184129823Sjulian .disconnect = ng_pppoe_disconnect, 185129823Sjulian .cmdlist = ng_pppoe_cmds, 18652419Sjulian}; 18752562SjulianNETGRAPH_INIT(pppoe, &typestruct); 18852419Sjulian 18952419Sjulian/* 19052419Sjulian * States for the session state machine. 19152419Sjulian * These have no meaning if there is no hook attached yet. 19252419Sjulian */ 19352419Sjulianenum state { 19452419Sjulian PPPOE_SNONE=0, /* [both] Initial state */ 19553498Sjulian PPPOE_LISTENING, /* [Daemon] Listening for discover initiation pkt */ 19652419Sjulian PPPOE_SINIT, /* [Client] Sent discovery initiation */ 19753498Sjulian PPPOE_PRIMED, /* [Server] Awaiting PADI from daemon */ 19853498Sjulian PPPOE_SOFFER, /* [Server] Sent offer message (got PADI)*/ 19952419Sjulian PPPOE_SREQ, /* [Client] Sent a Request */ 20053498Sjulian PPPOE_NEWCONNECTED, /* [Server] Connection established, No data received */ 20152419Sjulian PPPOE_CONNECTED, /* [Both] Connection established, Data received */ 20252419Sjulian PPPOE_DEAD /* [Both] */ 20352419Sjulian}; 20452419Sjulian 20552419Sjulian#define NUMTAGS 20 /* number of tags we are set up to work with */ 20652419Sjulian 20752419Sjulian/* 208154604Sglebius * Information we store for each hook on each node for negotiating the 20952419Sjulian * session. The mbuf and cluster are freed once negotiation has completed. 21052419Sjulian * The whole negotiation block is then discarded. 21152419Sjulian */ 21252419Sjulian 21352419Sjulianstruct sess_neg { 21452419Sjulian struct mbuf *m; /* holds cluster with last sent packet */ 21552419Sjulian union packet *pkt; /* points within the above cluster */ 216138562Sglebius struct callout handle; /* see timeout(9) */ 21752419Sjulian u_int timeout; /* 0,1,2,4,8,16 etc. seconds */ 21852419Sjulian u_int numtags; 21997897Sarchie const struct pppoe_tag *tags[NUMTAGS]; 22052419Sjulian u_int service_len; 22152419Sjulian u_int ac_name_len; 22252419Sjulian 22352419Sjulian struct datatag service; 22452419Sjulian struct datatag ac_name; 22552419Sjulian}; 22652419Sjuliantypedef struct sess_neg *negp; 22752419Sjulian 22852419Sjulian/* 22952419Sjulian * Session information that is needed after connection. 23052419Sjulian */ 23166052Sarchiestruct sess_con { 23252419Sjulian hook_p hook; 233154604Sglebius uint16_t Session_ID; 23452419Sjulian enum state state; 235154604Sglebius ng_ID_t creator; /* who to notify */ 23652419Sjulian struct pppoe_full_hdr pkt_hdr; /* used when connected */ 23752419Sjulian negp neg; /* used when negotiating */ 238176775Smav LIST_ENTRY(sess_con) sessions; 23952419Sjulian}; 24066052Sarchietypedef struct sess_con *sessp; 24152419Sjulian 242175865Smav#define SESSHASHSIZE 0x0100 243175865Smav#define SESSHASH(x) (((x) ^ ((x) >> 8)) & (SESSHASHSIZE - 1)) 244175865Smav 245175865Smavstruct sess_hash_entry { 246175865Smav struct mtx mtx; 247176775Smav LIST_HEAD(hhead, sess_con) head; 248175865Smav}; 249175865Smav 25052419Sjulian/* 25152419Sjulian * Information we store for each node 25252419Sjulian */ 253154604Sglebiusstruct PPPoE { 25452419Sjulian node_p node; /* back pointer to node */ 25552419Sjulian hook_p ethernet_hook; 25652419Sjulian hook_p debug_hook; 25752419Sjulian u_int packets_in; /* packets in from ethernet */ 25852419Sjulian u_int packets_out; /* packets out towards ethernet */ 259154604Sglebius uint32_t flags; 260154901Sglebius#define COMPAT_3COM 0x00000001 261154901Sglebius#define COMPAT_DLINK 0x00000002 262161117Sglebius struct ether_header eh; 263176775Smav LIST_HEAD(, sess_con) listeners; 264175865Smav struct sess_hash_entry sesshash[SESSHASHSIZE]; 26552419Sjulian}; 266154604Sglebiustypedef struct PPPoE *priv_p; 26752419Sjulian 26852419Sjulianunion uniq { 26952419Sjulian char bytes[sizeof(void *)]; 270154604Sglebius void *pointer; 271154604Sglebius}; 27252419Sjulian 27352419Sjulian#define LEAVE(x) do { error = x; goto quit; } while(0) 27452419Sjulianstatic void pppoe_start(sessp sp); 275138562Sglebiusstatic void pppoe_ticker(node_p node, hook_p hook, void *arg1, int arg2); 27697897Sarchiestatic const struct pppoe_tag *scan_tags(sessp sp, 27797897Sarchie const struct pppoe_hdr* ph); 27852441Sjulianstatic int pppoe_send_event(sessp sp, enum cmd cmdid); 27952419Sjulian 28052419Sjulian/************************************************************************* 28152419Sjulian * Some basic utilities from the Linux version with author's permission.* 28252419Sjulian * Author: Michal Ostrowski <mostrows@styx.uwaterloo.ca> * 28352419Sjulian ************************************************************************/ 28452419Sjulian 28552419Sjulian 28652419Sjulian 28752419Sjulian/* 288154604Sglebius * Return the location where the next tag can be put 28952419Sjulian */ 29097897Sarchiestatic __inline const struct pppoe_tag* 29197897Sarchienext_tag(const struct pppoe_hdr* ph) 29252419Sjulian{ 293189315Sed return (const struct pppoe_tag*)(((const char*)(ph + 1)) 29497897Sarchie + ntohs(ph->length)); 29552419Sjulian} 29652419Sjulian 29752419Sjulian/* 298154604Sglebius * Look for a tag of a specific type. 299154604Sglebius * Don't trust any length the other end says, 30052419Sjulian * but assume we already sanity checked ph->length. 30152419Sjulian */ 30297897Sarchiestatic const struct pppoe_tag* 303154604Sglebiusget_tag(const struct pppoe_hdr* ph, uint16_t idx) 30452419Sjulian{ 30597897Sarchie const char *const end = (const char *)next_tag(ph); 306189315Sed const struct pppoe_tag *pt = (const void *)(ph + 1); 30797897Sarchie const char *ptn; 308154604Sglebius 30952419Sjulian /* 31052419Sjulian * Keep processing tags while a tag header will still fit. 31152419Sjulian */ 31297897Sarchie while((const char*)(pt + 1) <= end) { 313154604Sglebius /* 314154604Sglebius * If the tag data would go past the end of the packet, abort. 315154604Sglebius */ 316154604Sglebius ptn = (((const char *)(pt + 1)) + ntohs(pt->tag_len)); 317154604Sglebius if (ptn > end) { 318154604Sglebius CTR2(KTR_NET, "%20s: invalid length for tag %d", 319154604Sglebius __func__, idx); 320154604Sglebius return (NULL); 321154604Sglebius } 322154604Sglebius if (pt->tag_type == idx) { 323154604Sglebius CTR2(KTR_NET, "%20s: found tag %d", __func__, idx); 324154604Sglebius return (pt); 325154604Sglebius } 32652419Sjulian 327154604Sglebius pt = (const struct pppoe_tag*)ptn; 328154604Sglebius } 32952419Sjulian 330154604Sglebius CTR2(KTR_NET, "%20s: not found tag %d", __func__, idx); 331154604Sglebius return (NULL); 33252419Sjulian} 33352419Sjulian 33452419Sjulian/************************************************************************** 335154604Sglebius * Inlines to initialise or add tags to a session's tag list. 33652419Sjulian **************************************************************************/ 33752419Sjulian/* 338154604Sglebius * Initialise the session's tag list. 33952419Sjulian */ 34052419Sjulianstatic void 34152419Sjulianinit_tags(sessp sp) 34252419Sjulian{ 343154604Sglebius KASSERT(sp->neg != NULL, ("%s: no neg", __func__)); 34452419Sjulian sp->neg->numtags = 0; 34552419Sjulian} 34652419Sjulian 34752419Sjulianstatic void 34897897Sarchieinsert_tag(sessp sp, const struct pppoe_tag *tp) 34952419Sjulian{ 350154604Sglebius negp neg = sp->neg; 351154604Sglebius int i; 35252419Sjulian 353154604Sglebius KASSERT(neg != NULL, ("%s: no neg", __func__)); 35452419Sjulian if ((i = neg->numtags++) < NUMTAGS) { 35552419Sjulian neg->tags[i] = tp; 35652419Sjulian } else { 357161034Sglebius log(LOG_NOTICE, "ng_pppoe: asked to add too many tags to " 358161034Sglebius "packet\n"); 35953042Sjulian neg->numtags--; 36052419Sjulian } 36152419Sjulian} 36252419Sjulian 36352419Sjulian/* 36452419Sjulian * Make up a packet, using the tags filled out for the session. 36552419Sjulian * 366154604Sglebius * Assume that the actual pppoe header and ethernet header 36752419Sjulian * are filled out externally to this routine. 368154604Sglebius * Also assume that neg->wh points to the correct 36952419Sjulian * location at the front of the buffer space. 37052419Sjulian */ 37152419Sjulianstatic void 37252419Sjulianmake_packet(sessp sp) { 37352419Sjulian struct pppoe_full_hdr *wh = &sp->neg->pkt->pkt_header; 37497897Sarchie const struct pppoe_tag **tag; 37552419Sjulian char *dp; 37652419Sjulian int count; 37752419Sjulian int tlen; 378154604Sglebius uint16_t length = 0; 37952419Sjulian 380154604Sglebius KASSERT((sp->neg != NULL) && (sp->neg->m != NULL), 381161034Sglebius ("%s: called from wrong state", __func__)); 382154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 383154604Sglebius 384189315Sed dp = (char *)(&wh->ph + 1); 38552419Sjulian for (count = 0, tag = sp->neg->tags; 386154604Sglebius ((count < sp->neg->numtags) && (count < NUMTAGS)); 38752419Sjulian tag++, count++) { 38852419Sjulian tlen = ntohs((*tag)->tag_len) + sizeof(**tag); 38952419Sjulian if ((length + tlen) > (ETHER_MAX_LEN - 4 - sizeof(*wh))) { 390161034Sglebius log(LOG_NOTICE, "ng_pppoe: tags too long\n"); 39152419Sjulian sp->neg->numtags = count; 39252419Sjulian break; /* XXX chop off what's too long */ 39352419Sjulian } 39497897Sarchie bcopy(*tag, (char *)dp, tlen); 39552419Sjulian length += tlen; 39652419Sjulian dp += tlen; 39752419Sjulian } 39852419Sjulian wh->ph.length = htons(length); 39952419Sjulian sp->neg->m->m_len = length + sizeof(*wh); 40052419Sjulian sp->neg->m->m_pkthdr.len = length + sizeof(*wh); 40152419Sjulian} 40252419Sjulian 40352419Sjulian/************************************************************************** 404154862Sglebius * Routines to match a service. * 40552419Sjulian **************************************************************************/ 406154862Sglebius 407154604Sglebius/* 40852419Sjulian * Find a hook that has a service string that matches that 409154862Sglebius * we are seeking. For now use a simple string. 41052419Sjulian * In the future we may need something like regexp(). 411154862Sglebius * 412154862Sglebius * Null string is a wildcard (ANY service), according to RFC2516. 413154862Sglebius * And historical FreeBSD wildcard is also "*". 41452419Sjulian */ 41580311Sbrian 41652419Sjulianstatic hook_p 417154862Sglebiuspppoe_match_svc(node_p node, const struct pppoe_tag *tag) 41852419Sjulian{ 419176775Smav const priv_p privp = NG_NODE_PRIVATE(node); 420176775Smav sessp sp; 42152419Sjulian 422176775Smav LIST_FOREACH(sp, &privp->listeners, sessions) { 423176775Smav negp neg = sp->neg; 42452419Sjulian 425154862Sglebius /* Empty Service-Name matches any service. */ 426154862Sglebius if (neg->service_len == 0) 427154862Sglebius break; 42852419Sjulian 429154862Sglebius /* Special case for a blank or "*" service name (wildcard). */ 430154862Sglebius if (neg->service_len == 1 && neg->service.data[0] == '*') 431154862Sglebius break; 432154862Sglebius 43352419Sjulian /* If the lengths don't match, that aint it. */ 434154862Sglebius if (neg->service_len != ntohs(tag->tag_len)) 43552419Sjulian continue; 43652419Sjulian 437189315Sed if (strncmp((const char *)(tag + 1), neg->service.data, 438154862Sglebius ntohs(tag->tag_len)) == 0) 43980311Sbrian break; 440154862Sglebius } 441176775Smav CTR3(KTR_NET, "%20s: matched %p for %s", __func__, 442189315Sed sp?sp->hook:NULL, (const char *)(tag + 1)); 44380311Sbrian 444176775Smav return (sp?sp->hook:NULL); 445154862Sglebius} 446154862Sglebius 447154862Sglebius/* 448154862Sglebius * Broadcast the PADI packet in m0 to all listening hooks. 449154862Sglebius * This routine is called when a PADI with empty Service-Name 450154862Sglebius * tag is received. Client should receive PADOs with all 451154862Sglebius * available services. 452154862Sglebius */ 453154862Sglebiusstatic int 454154862Sglebiuspppoe_broadcast_padi(node_p node, struct mbuf *m0) 455154862Sglebius{ 456176775Smav const priv_p privp = NG_NODE_PRIVATE(node); 457176775Smav sessp sp; 458154862Sglebius int error = 0; 459154862Sglebius 460176775Smav LIST_FOREACH(sp, &privp->listeners, sessions) { 461154862Sglebius struct mbuf *m; 462154862Sglebius 463243882Sglebius m = m_dup(m0, M_NOWAIT); 464154862Sglebius if (m == NULL) 465154862Sglebius return (ENOMEM); 466176775Smav NG_SEND_DATA_ONLY(error, sp->hook, m); 467154862Sglebius if (error) 468154862Sglebius return (error); 46952419Sjulian } 470154604Sglebius 471154862Sglebius return (0); 47252419Sjulian} 473154604Sglebius 474154862Sglebius/* 475154862Sglebius * Find a hook, which name equals to given service. 476154862Sglebius */ 477154862Sglebiusstatic hook_p 478154862Sglebiuspppoe_find_svc(node_p node, const char *svc_name, int svc_len) 479154862Sglebius{ 480176775Smav const priv_p privp = NG_NODE_PRIVATE(node); 481176775Smav sessp sp; 482154862Sglebius 483176775Smav LIST_FOREACH(sp, &privp->listeners, sessions) { 484176775Smav negp neg = sp->neg; 485154862Sglebius 486154862Sglebius if (neg->service_len == svc_len && 487174931Smav strncmp(svc_name, neg->service.data, svc_len) == 0) 488176775Smav return (sp->hook); 489154862Sglebius } 490154862Sglebius 491154862Sglebius return (NULL); 492154862Sglebius} 493154862Sglebius 49452419Sjulian/************************************************************************** 495175865Smav * Routines to find a particular session that matches an incoming packet. * 49652419Sjulian **************************************************************************/ 497176753Smav/* Find free session and add to hash. */ 498176753Smavstatic uint16_t 499176753Smavpppoe_getnewsession(sessp sp) 500176753Smav{ 501176753Smav const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(sp->hook)); 502176753Smav static uint16_t pppoe_sid = 1; 503176753Smav sessp tsp; 504176753Smav uint16_t val, hash; 505176753Smav 506176753Smavrestart: 507176753Smav /* Atomicity is not needed here as value will be checked. */ 508176753Smav val = pppoe_sid++; 509176753Smav /* Spec says 0xFFFF is reserved, also don't use 0x0000. */ 510176753Smav if (val == 0xffff || val == 0x0000) 511176753Smav val = pppoe_sid = 1; 512176753Smav 513176753Smav /* Check it isn't already in use. */ 514176753Smav hash = SESSHASH(val); 515176753Smav mtx_lock(&privp->sesshash[hash].mtx); 516176775Smav LIST_FOREACH(tsp, &privp->sesshash[hash].head, sessions) { 517176753Smav if (tsp->Session_ID == val) 518176753Smav break; 519176753Smav } 520176753Smav if (!tsp) { 521176753Smav sp->Session_ID = val; 522176775Smav LIST_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions); 523176753Smav } 524176753Smav mtx_unlock(&privp->sesshash[hash].mtx); 525176753Smav if (tsp) 526176753Smav goto restart; 527176753Smav 528176753Smav CTR2(KTR_NET, "%20s: new sid %d", __func__, val); 529176753Smav 530176753Smav return (val); 531176753Smav} 532176753Smav 533175865Smav/* Add specified session to hash. */ 534175865Smavstatic void 535175865Smavpppoe_addsession(sessp sp) 53652419Sjulian{ 537175865Smav const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(sp->hook)); 538175865Smav uint16_t hash = SESSHASH(sp->Session_ID); 53952419Sjulian 540175865Smav mtx_lock(&privp->sesshash[hash].mtx); 541176775Smav LIST_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions); 542175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 543175865Smav} 544172270Smav 545175865Smav/* Delete specified session from hash. */ 546175865Smavstatic void 547175865Smavpppoe_delsession(sessp sp) 548175865Smav{ 549175865Smav const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(sp->hook)); 550175865Smav uint16_t hash = SESSHASH(sp->Session_ID); 551175865Smav 552175865Smav mtx_lock(&privp->sesshash[hash].mtx); 553176775Smav LIST_REMOVE(sp, sessions); 554175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 555175865Smav} 556175865Smav 557175865Smav/* Find matching peer/session combination. */ 558175865Smavstatic sessp 559175865Smavpppoe_findsession(priv_p privp, const struct pppoe_full_hdr *wh) 560175865Smav{ 561175865Smav uint16_t session = ntohs(wh->ph.sid); 562175865Smav uint16_t hash = SESSHASH(session); 563175865Smav sessp sp = NULL; 564175865Smav 565175865Smav mtx_lock(&privp->sesshash[hash].mtx); 566176775Smav LIST_FOREACH(sp, &privp->sesshash[hash].head, sessions) { 567172270Smav if (sp->Session_ID == session && 568172270Smav bcmp(sp->pkt_hdr.eh.ether_dhost, 569172270Smav wh->eh.ether_shost, ETHER_ADDR_LEN) == 0) { 57052419Sjulian break; 57152419Sjulian } 57252419Sjulian } 573175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 574175867Smav CTR3(KTR_NET, "%20s: matched %p for %d", __func__, sp?sp->hook:NULL, 575175867Smav session); 576154604Sglebius 577175865Smav return (sp); 57852419Sjulian} 57952419Sjulian 58052419Sjulianstatic hook_p 58197897Sarchiepppoe_finduniq(node_p node, const struct pppoe_tag *tag) 58252419Sjulian{ 583154604Sglebius hook_p hook = NULL; 584154604Sglebius union uniq uniq; 58552419Sjulian 586189315Sed bcopy(tag + 1, uniq.bytes, sizeof(void *)); 587154604Sglebius /* Cycle through all known hooks. */ 58870784Sjulian LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 589172270Smav /* Skip any nonsession hook. */ 590172270Smav if (NG_HOOK_PRIVATE(hook) == NULL) 59152419Sjulian continue; 59270784Sjulian if (uniq.pointer == NG_HOOK_PRIVATE(hook)) 59352419Sjulian break; 59452419Sjulian } 595154604Sglebius CTR3(KTR_NET, "%20s: matched %p for %p", __func__, hook, uniq.pointer); 596154604Sglebius 59752419Sjulian return (hook); 59852419Sjulian} 59952419Sjulian 60052419Sjulian/************************************************************************** 601154604Sglebius * Start of Netgraph entrypoints. * 60252419Sjulian **************************************************************************/ 60352419Sjulian 60452419Sjulian/* 605154604Sglebius * Allocate the private data structure and link it with node. 60652419Sjulian */ 60752419Sjulianstatic int 60870700Sjulianng_pppoe_constructor(node_p node) 60952419Sjulian{ 610175865Smav priv_p privp; 611175865Smav int i; 61252419Sjulian 613154604Sglebius /* Initialize private descriptor. */ 614220768Sglebius privp = malloc(sizeof(*privp), M_NETGRAPH_PPPOE, M_WAITOK | M_ZERO); 61552419Sjulian 616154604Sglebius /* Link structs together; this counts as our one reference to *node. */ 617154604Sglebius NG_NODE_SET_PRIVATE(node, privp); 618154604Sglebius privp->node = node; 619132703Sglebius 620154901Sglebius /* Initialize to standard mode. */ 621161117Sglebius memset(&privp->eh.ether_dhost, 0xff, ETHER_ADDR_LEN); 622161117Sglebius privp->eh.ether_type = ETHERTYPE_PPPOE_DISC; 623154604Sglebius 624176775Smav LIST_INIT(&privp->listeners); 625175865Smav for (i = 0; i < SESSHASHSIZE; i++) { 626175865Smav mtx_init(&privp->sesshash[i].mtx, "PPPoE hash mutex", NULL, MTX_DEF); 627176775Smav LIST_INIT(&privp->sesshash[i].head); 628175865Smav } 629175865Smav 630154604Sglebius CTR3(KTR_NET, "%20s: created node [%x] (%p)", 631154604Sglebius __func__, node->nd_ID, node); 632154604Sglebius 63352419Sjulian return (0); 63452419Sjulian} 63552419Sjulian 63652419Sjulian/* 63752419Sjulian * Give our ok for a hook to be added... 63852419Sjulian * point the hook's private info to the hook structure. 63952419Sjulian * 64052419Sjulian * The following hook names are special: 641154604Sglebius * "ethernet": the hook that should be connected to a NIC. 642154604Sglebius * "debug": copies of data sent out here (when I write the code). 64369922Sjulian * All other hook names need only be unique. (the framework checks this). 64452419Sjulian */ 64552419Sjulianstatic int 64652562Sjulianng_pppoe_newhook(node_p node, hook_p hook, const char *name) 64752419Sjulian{ 64870784Sjulian const priv_p privp = NG_NODE_PRIVATE(node); 64952419Sjulian sessp sp; 65052419Sjulian 65152419Sjulian if (strcmp(name, NG_PPPOE_HOOK_ETHERNET) == 0) { 65252419Sjulian privp->ethernet_hook = hook; 653172629Smav NG_HOOK_SET_RCVDATA(hook, ng_pppoe_rcvdata_ether); 65452419Sjulian } else if (strcmp(name, NG_PPPOE_HOOK_DEBUG) == 0) { 65552419Sjulian privp->debug_hook = hook; 656172629Smav NG_HOOK_SET_RCVDATA(hook, ng_pppoe_rcvdata_debug); 65752419Sjulian } else { 65852419Sjulian /* 65952419Sjulian * Any other unique name is OK. 66052419Sjulian * The infrastructure has already checked that it's unique, 66152419Sjulian * so just allocate it and hook it in. 66252419Sjulian */ 663154604Sglebius sp = malloc(sizeof(*sp), M_NETGRAPH_PPPOE, M_NOWAIT | M_ZERO); 664154604Sglebius if (sp == NULL) 665154604Sglebius return (ENOMEM); 66652419Sjulian 66770784Sjulian NG_HOOK_SET_PRIVATE(hook, sp); 66852419Sjulian sp->hook = hook; 66952419Sjulian } 670154604Sglebius CTR5(KTR_NET, "%20s: node [%x] (%p) connected hook %s (%p)", 671154604Sglebius __func__, node->nd_ID, node, name, hook); 672154604Sglebius 67352419Sjulian return(0); 67452419Sjulian} 67552419Sjulian 67652419Sjulian/* 677161117Sglebius * Hook has been added successfully. Request the MAC address of 678161117Sglebius * the underlying Ethernet node. 679161117Sglebius */ 680161117Sglebiusstatic int 681161117Sglebiusng_pppoe_connect(hook_p hook) 682161117Sglebius{ 683161117Sglebius const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 684161117Sglebius struct ng_mesg *msg; 685161181Sglebius int error; 686161117Sglebius 687161117Sglebius if (hook != privp->ethernet_hook) 688161117Sglebius return (0); 689161117Sglebius 690161117Sglebius /* 691161117Sglebius * If this is Ethernet hook, then request MAC address 692161117Sglebius * from our downstream. 693161117Sglebius */ 694161117Sglebius NG_MKMESSAGE(msg, NGM_ETHER_COOKIE, NGM_ETHER_GET_ENADDR, 0, M_NOWAIT); 695161117Sglebius if (msg == NULL) 696161117Sglebius return (ENOBUFS); 697161117Sglebius 698161117Sglebius /* 699161117Sglebius * Our hook and peer hook have HK_INVALID flag set, 700161117Sglebius * so we can't use NG_SEND_MSG_HOOK() macro here. 701161117Sglebius */ 702161117Sglebius NG_SEND_MSG_ID(error, privp->node, msg, 703161117Sglebius NG_NODE_ID(NG_PEER_NODE(privp->ethernet_hook)), 704161117Sglebius NG_NODE_ID(privp->node)); 705161117Sglebius 706161117Sglebius return (error); 707161117Sglebius} 708161117Sglebius/* 70952419Sjulian * Get a netgraph control message. 71052419Sjulian * Check it is one we understand. If needed, send a response. 71152419Sjulian * We sometimes save the address for an async action later. 71252419Sjulian * Always free the message. 71352419Sjulian */ 71452419Sjulianstatic int 71570700Sjulianng_pppoe_rcvmsg(node_p node, item_p item, hook_p lasthook) 71652419Sjulian{ 71770784Sjulian priv_p privp = NG_NODE_PRIVATE(node); 71852562Sjulian struct ngpppoe_init_data *ourmsg = NULL; 71952419Sjulian struct ng_mesg *resp = NULL; 72052419Sjulian int error = 0; 72152419Sjulian hook_p hook = NULL; 72252419Sjulian sessp sp = NULL; 72352419Sjulian negp neg = NULL; 72470700Sjulian struct ng_mesg *msg; 72552419Sjulian 72670700Sjulian NGI_GET_MSG(item, msg); 727154604Sglebius CTR5(KTR_NET, "%20s: node [%x] (%p) got message %d with cookie %d", 728154604Sglebius __func__, node->nd_ID, node, msg->header.cmd, 729154604Sglebius msg->header.typecookie); 730154604Sglebius 731154604Sglebius /* Deal with message according to cookie and command. */ 73252419Sjulian switch (msg->header.typecookie) { 733154604Sglebius case NGM_PPPOE_COOKIE: 73452419Sjulian switch (msg->header.cmd) { 73552419Sjulian case NGM_PPPOE_CONNECT: 736154604Sglebius case NGM_PPPOE_LISTEN: 737154604Sglebius case NGM_PPPOE_OFFER: 738154604Sglebius case NGM_PPPOE_SERVICE: 73968845Sbrian ourmsg = (struct ngpppoe_init_data *)msg->data; 74068845Sbrian if (msg->header.arglen < sizeof(*ourmsg)) { 741161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: init data too " 742161034Sglebius "small\n", node->nd_ID); 74368845Sbrian LEAVE(EMSGSIZE); 74468031Sbrian } 745154604Sglebius if (msg->header.arglen - sizeof(*ourmsg) > 74668031Sbrian PPPOE_SERVICE_NAME_SIZE) { 747161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: service name " 748161034Sglebius "too big\n", node->nd_ID); 74952419Sjulian LEAVE(EMSGSIZE); 75052419Sjulian } 75168845Sbrian if (msg->header.arglen - sizeof(*ourmsg) < 75268845Sbrian ourmsg->data_len) { 753161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: init data has bad " 754161034Sglebius "length, %d should be %zd\n", node->nd_ID, 755161034Sglebius ourmsg->data_len, 75668845Sbrian msg->header.arglen - sizeof (*ourmsg)); 75752419Sjulian LEAVE(EMSGSIZE); 75852419Sjulian } 75968031Sbrian 760154604Sglebius /* Make sure strcmp will terminate safely. */ 76152419Sjulian ourmsg->hook[sizeof(ourmsg->hook) - 1] = '\0'; 76252419Sjulian 763176775Smav /* Find hook by name. */ 764176775Smav hook = ng_findhook(node, ourmsg->hook); 765154604Sglebius if (hook == NULL) 76652419Sjulian LEAVE(ENOENT); 767154604Sglebius 768172270Smav sp = NG_HOOK_PRIVATE(hook); 769172270Smav if (sp == NULL) 77052419Sjulian LEAVE(EINVAL); 771154604Sglebius 77280311Sbrian if (msg->header.cmd == NGM_PPPOE_LISTEN) { 77380311Sbrian /* 77480311Sbrian * Ensure we aren't already listening for this 77580311Sbrian * service. 77680311Sbrian */ 777154862Sglebius if (pppoe_find_svc(node, ourmsg->data, 778154862Sglebius ourmsg->data_len) != NULL) 77980311Sbrian LEAVE(EEXIST); 78080311Sbrian } 78180311Sbrian 78269922Sjulian /* 78369922Sjulian * PPPOE_SERVICE advertisments are set up 78469922Sjulian * on sessions that are in PRIMED state. 78569922Sjulian */ 786154604Sglebius if (msg->header.cmd == NGM_PPPOE_SERVICE) 78769922Sjulian break; 788154604Sglebius 789150319Sglebius if (sp->state != PPPOE_SNONE) { 790161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: Session already " 791161034Sglebius "active\n", node->nd_ID); 79252419Sjulian LEAVE(EISCONN); 79352419Sjulian } 79452443Sjulian 79552419Sjulian /* 796154604Sglebius * Set up prototype header. 79752419Sjulian */ 798154604Sglebius neg = malloc(sizeof(*neg), M_NETGRAPH_PPPOE, 79968876Sdwmalone M_NOWAIT | M_ZERO); 80052419Sjulian 801154604Sglebius if (neg == NULL) 80252419Sjulian LEAVE(ENOMEM); 803154604Sglebius 804243882Sglebius neg->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 805154604Sglebius if (neg->m == NULL) { 806154604Sglebius free(neg, M_NETGRAPH_PPPOE); 80752419Sjulian LEAVE(ENOBUFS); 80852419Sjulian } 80952419Sjulian neg->m->m_pkthdr.rcvif = NULL; 81052419Sjulian sp->neg = neg; 811138562Sglebius ng_callout_init(&neg->handle); 81252419Sjulian neg->m->m_len = sizeof(struct pppoe_full_hdr); 81352419Sjulian neg->pkt = mtod(neg->m, union packet*); 814132703Sglebius memcpy((void *)&neg->pkt->pkt_header.eh, 815161117Sglebius &privp->eh, sizeof(struct ether_header)); 81652419Sjulian neg->pkt->pkt_header.ph.ver = 0x1; 81752419Sjulian neg->pkt->pkt_header.ph.type = 0x1; 81852419Sjulian neg->pkt->pkt_header.ph.sid = 0x0000; 81952419Sjulian neg->timeout = 0; 82052419Sjulian 82170700Sjulian sp->creator = NGI_RETADDR(item); 82252419Sjulian } 82352419Sjulian switch (msg->header.cmd) { 82452419Sjulian case NGM_PPPOE_GET_STATUS: 82552419Sjulian { 82652562Sjulian struct ngpppoestat *stats; 82752419Sjulian 82852419Sjulian NG_MKRESPONSE(resp, msg, sizeof(*stats), M_NOWAIT); 829154604Sglebius if (!resp) 83052419Sjulian LEAVE(ENOMEM); 831154604Sglebius 83252562Sjulian stats = (struct ngpppoestat *) resp->data; 83352419Sjulian stats->packets_in = privp->packets_in; 83452419Sjulian stats->packets_out = privp->packets_out; 83552419Sjulian break; 83652419Sjulian } 83752419Sjulian case NGM_PPPOE_CONNECT: 838174981Smav { 83952419Sjulian /* 84052419Sjulian * Check the hook exists and is Uninitialised. 84152419Sjulian * Send a PADI request, and start the timeout logic. 84252419Sjulian * Store the originator of this message so we can send 84352419Sjulian * a success of fail message to them later. 844154604Sglebius * Move the session to SINIT. 84552419Sjulian * Set up the session to the correct state and 84652419Sjulian * start it. 84752419Sjulian */ 848174981Smav int i, acnlen = 0, acnsep = 0, srvlen; 849174981Smav for (i = 0; i < ourmsg->data_len; i++) { 850174981Smav if (ourmsg->data[i] == '\\') { 851174981Smav acnlen = i; 852174981Smav acnsep = 1; 853174981Smav break; 854174981Smav } 855174981Smav } 856174981Smav srvlen = ourmsg->data_len - acnlen - acnsep; 857174981Smav 858174981Smav bcopy(ourmsg->data, neg->ac_name.data, acnlen); 859174981Smav neg->ac_name_len = acnlen; 860174981Smav 86152419Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 862174981Smav neg->service.hdr.tag_len = htons((uint16_t)srvlen); 863174981Smav bcopy(ourmsg->data + acnlen + acnsep, 864174981Smav neg->service.data, srvlen); 865174981Smav neg->service_len = srvlen; 86652419Sjulian pppoe_start(sp); 86752419Sjulian break; 868174981Smav } 86952419Sjulian case NGM_PPPOE_LISTEN: 87052419Sjulian /* 87152419Sjulian * Check the hook exists and is Uninitialised. 87252419Sjulian * Install the service matching string. 87352419Sjulian * Store the originator of this message so we can send 87452419Sjulian * a success of fail message to them later. 87552419Sjulian * Move the hook to 'LISTENING' 87652419Sjulian */ 87752419Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 87868845Sbrian neg->service.hdr.tag_len = 879154604Sglebius htons((uint16_t)ourmsg->data_len); 88052443Sjulian 88168845Sbrian if (ourmsg->data_len) 88268845Sbrian bcopy(ourmsg->data, neg->service.data, 88368845Sbrian ourmsg->data_len); 88468845Sbrian neg->service_len = ourmsg->data_len; 88552419Sjulian neg->pkt->pkt_header.ph.code = PADT_CODE; 88652419Sjulian /* 887154604Sglebius * Wait for PADI packet coming from Ethernet. 88852419Sjulian */ 88952419Sjulian sp->state = PPPOE_LISTENING; 890176775Smav LIST_INSERT_HEAD(&privp->listeners, sp, sessions); 89152419Sjulian break; 89252419Sjulian case NGM_PPPOE_OFFER: 89352419Sjulian /* 89452419Sjulian * Check the hook exists and is Uninitialised. 89552419Sjulian * Store the originator of this message so we can send 89652419Sjulian * a success of fail message to them later. 89752419Sjulian * Store the AC-Name given and go to PRIMED. 89852419Sjulian */ 89952419Sjulian neg->ac_name.hdr.tag_type = PTT_AC_NAME; 90068845Sbrian neg->ac_name.hdr.tag_len = 901154604Sglebius htons((uint16_t)ourmsg->data_len); 90268845Sbrian if (ourmsg->data_len) 90368845Sbrian bcopy(ourmsg->data, neg->ac_name.data, 90468845Sbrian ourmsg->data_len); 90568845Sbrian neg->ac_name_len = ourmsg->data_len; 90652419Sjulian neg->pkt->pkt_header.ph.code = PADO_CODE; 90752419Sjulian /* 908154604Sglebius * Wait for PADI packet coming from hook. 90952419Sjulian */ 91052419Sjulian sp->state = PPPOE_PRIMED; 91152419Sjulian break; 912154604Sglebius case NGM_PPPOE_SERVICE: 913154604Sglebius /* 91469922Sjulian * Check the session is primed. 91569922Sjulian * for now just allow ONE service to be advertised. 91669922Sjulian * If you do it twice you just overwrite. 91769922Sjulian */ 91870148Sjulian if (sp->state != PPPOE_PRIMED) { 919161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: session not " 920161034Sglebius "primed\n", node->nd_ID); 92169922Sjulian LEAVE(EISCONN); 92269922Sjulian } 92370931Sjulian neg = sp->neg; 92469922Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 92569922Sjulian neg->service.hdr.tag_len = 926154604Sglebius htons((uint16_t)ourmsg->data_len); 92769922Sjulian 92869922Sjulian if (ourmsg->data_len) 92969922Sjulian bcopy(ourmsg->data, neg->service.data, 93069922Sjulian ourmsg->data_len); 93169922Sjulian neg->service_len = ourmsg->data_len; 93269922Sjulian break; 933132703Sglebius case NGM_PPPOE_SETMODE: 934132703Sglebius { 935132703Sglebius char *s; 936132703Sglebius size_t len; 937132703Sglebius 938132703Sglebius if (msg->header.arglen == 0) 939132703Sglebius LEAVE(EINVAL); 940132703Sglebius 941132703Sglebius s = (char *)msg->data; 942132703Sglebius len = msg->header.arglen - 1; 943132703Sglebius 944154604Sglebius /* Search for matching mode string. */ 945154901Sglebius if (len == strlen(NG_PPPOE_STANDARD) && 946154901Sglebius (strncmp(NG_PPPOE_STANDARD, s, len) == 0)) { 947154901Sglebius privp->flags = 0; 948161117Sglebius privp->eh.ether_type = ETHERTYPE_PPPOE_DISC; 949154901Sglebius break; 950154901Sglebius } 951154901Sglebius if (len == strlen(NG_PPPOE_3COM) && 952154901Sglebius (strncmp(NG_PPPOE_3COM, s, len) == 0)) { 953154901Sglebius privp->flags |= COMPAT_3COM; 954161117Sglebius privp->eh.ether_type = 955161117Sglebius ETHERTYPE_PPPOE_3COM_DISC; 956154901Sglebius break; 957154901Sglebius } 958154901Sglebius if (len == strlen(NG_PPPOE_DLINK) && 959154901Sglebius (strncmp(NG_PPPOE_DLINK, s, len) == 0)) { 960154901Sglebius privp->flags |= COMPAT_DLINK; 961154901Sglebius break; 962154901Sglebius } 963154901Sglebius error = EINVAL; 964132703Sglebius break; 965132703Sglebius } 966132703Sglebius case NGM_PPPOE_GETMODE: 967154901Sglebius { 968154901Sglebius char *s; 969154901Sglebius size_t len = 0; 970154901Sglebius 971154901Sglebius if (privp->flags == 0) 972154901Sglebius len += strlen(NG_PPPOE_STANDARD) + 1; 973154901Sglebius if (privp->flags & COMPAT_3COM) 974154901Sglebius len += strlen(NG_PPPOE_3COM) + 1; 975154901Sglebius if (privp->flags & COMPAT_DLINK) 976154901Sglebius len += strlen(NG_PPPOE_DLINK) + 1; 977154901Sglebius 978154901Sglebius NG_MKRESPONSE(resp, msg, len, M_NOWAIT); 979132703Sglebius if (resp == NULL) 980132703Sglebius LEAVE(ENOMEM); 981154901Sglebius 982154901Sglebius s = (char *)resp->data; 983154901Sglebius if (privp->flags == 0) { 984154901Sglebius len = strlen(NG_PPPOE_STANDARD); 985154901Sglebius strlcpy(s, NG_PPPOE_STANDARD, len + 1); 986154901Sglebius break; 987154901Sglebius } 988154901Sglebius if (privp->flags & COMPAT_3COM) { 989154901Sglebius len = strlen(NG_PPPOE_3COM); 990154901Sglebius strlcpy(s, NG_PPPOE_3COM, len + 1); 991154901Sglebius s += len; 992154901Sglebius } 993154901Sglebius if (privp->flags & COMPAT_DLINK) { 994154901Sglebius if (s != resp->data) 995154901Sglebius *s++ = '|'; 996154901Sglebius len = strlen(NG_PPPOE_DLINK); 997154901Sglebius strlcpy(s, NG_PPPOE_DLINK, len + 1); 998154901Sglebius } 999132703Sglebius break; 1000154901Sglebius } 1001161117Sglebius case NGM_PPPOE_SETENADDR: 1002161117Sglebius if (msg->header.arglen != ETHER_ADDR_LEN) 1003161117Sglebius LEAVE(EINVAL); 1004161117Sglebius bcopy(msg->data, &privp->eh.ether_shost, 1005161117Sglebius ETHER_ADDR_LEN); 1006161117Sglebius break; 100752419Sjulian default: 100852419Sjulian LEAVE(EINVAL); 100952419Sjulian } 101052419Sjulian break; 1011161117Sglebius case NGM_ETHER_COOKIE: 1012161117Sglebius if (!(msg->header.flags & NGF_RESP)) 1013161117Sglebius LEAVE(EINVAL); 1014161117Sglebius switch (msg->header.cmd) { 1015161117Sglebius case NGM_ETHER_GET_ENADDR: 1016161117Sglebius if (msg->header.arglen != ETHER_ADDR_LEN) 1017161117Sglebius LEAVE(EINVAL); 1018161117Sglebius bcopy(msg->data, &privp->eh.ether_shost, 1019161117Sglebius ETHER_ADDR_LEN); 1020161117Sglebius break; 1021161117Sglebius default: 1022161181Sglebius LEAVE(EINVAL); 1023161117Sglebius } 1024161117Sglebius break; 102552419Sjulian default: 102652419Sjulian LEAVE(EINVAL); 102752419Sjulian } 102852419Sjulian 1029154604Sglebius /* Take care of synchronous response, if any. */ 103070700Sjulianquit: 1031154901Sglebius CTR2(KTR_NET, "%20s: returning %d", __func__, error); 103270700Sjulian NG_RESPOND_MSG(error, node, item, resp); 1033154604Sglebius /* Free the message and return. */ 103470700Sjulian NG_FREE_MSG(msg); 103552419Sjulian return(error); 103652419Sjulian} 103752419Sjulian 103852443Sjulian/* 103952443Sjulian * Start a client into the first state. A separate function because 104052443Sjulian * it can be needed if the negotiation times out. 104152443Sjulian */ 104252419Sjulianstatic void 104352419Sjulianpppoe_start(sessp sp) 104452419Sjulian{ 1045172628Smav hook_p hook = sp->hook; 1046172628Smav node_p node = NG_HOOK_NODE(hook); 1047172628Smav priv_p privp = NG_NODE_PRIVATE(node); 1048172628Smav negp neg = sp->neg; 104952419Sjulian struct { 105052419Sjulian struct pppoe_tag hdr; 105152419Sjulian union uniq data; 1052103870Salfred } __packed uniqtag; 1053172628Smav struct mbuf *m0; 1054172628Smav int error; 105552419Sjulian 1056154604Sglebius /* 1057154604Sglebius * Kick the state machine into starting up. 105852419Sjulian */ 1059154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 106052419Sjulian sp->state = PPPOE_SINIT; 1061154604Sglebius /* 1062154604Sglebius * Reset the packet header to broadcast. Since we are 1063161117Sglebius * in a client mode use configured ethertype. 1064154604Sglebius */ 1065172628Smav memcpy((void *)&neg->pkt->pkt_header.eh, &privp->eh, 1066161117Sglebius sizeof(struct ether_header)); 1067172628Smav neg->pkt->pkt_header.ph.code = PADI_CODE; 106852419Sjulian uniqtag.hdr.tag_type = PTT_HOST_UNIQ; 106952419Sjulian uniqtag.hdr.tag_len = htons((u_int16_t)sizeof(uniqtag.data)); 107052419Sjulian uniqtag.data.pointer = sp; 107152419Sjulian init_tags(sp); 107268079Sjulian insert_tag(sp, &uniqtag.hdr); 1073172628Smav insert_tag(sp, &neg->service.hdr); 107452419Sjulian make_packet(sp); 1075172628Smav /* 1076172628Smav * Send packet and prepare to retransmit it after timeout. 1077172628Smav */ 1078172628Smav ng_callout(&neg->handle, node, hook, PPPOE_INITIAL_TIMEOUT * hz, 1079172628Smav pppoe_ticker, NULL, 0); 1080172628Smav neg->timeout = PPPOE_INITIAL_TIMEOUT * 2; 1081243882Sglebius m0 = m_copypacket(neg->m, M_NOWAIT); 1082172628Smav NG_SEND_DATA_ONLY(error, privp->ethernet_hook, m0); 108352419Sjulian} 108452419Sjulian 108590973Sbrianstatic int 108697897Sarchiesend_acname(sessp sp, const struct pppoe_tag *tag) 108790973Sbrian{ 108898636Sbrian int error, tlen; 108990973Sbrian struct ng_mesg *msg; 109090973Sbrian struct ngpppoe_sts *sts; 109190973Sbrian 1092154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1093154604Sglebius 109490973Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, NGM_PPPOE_ACNAME, 109590973Sbrian sizeof(struct ngpppoe_sts), M_NOWAIT); 109690973Sbrian if (msg == NULL) 109790973Sbrian return (ENOMEM); 109890973Sbrian 109990973Sbrian sts = (struct ngpppoe_sts *)msg->data; 1100125028Sharti tlen = min(NG_HOOKSIZ - 1, ntohs(tag->tag_len)); 1101189315Sed strncpy(sts->hook, (const char *)(tag + 1), tlen); 110298636Sbrian sts->hook[tlen] = '\0'; 1103102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 110490973Sbrian 110590973Sbrian return (error); 110690973Sbrian} 110790973Sbrian 110896578Sbrianstatic int 110996578Sbriansend_sessionid(sessp sp) 111096578Sbrian{ 111196578Sbrian int error; 111296578Sbrian struct ng_mesg *msg; 111396578Sbrian 1114154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1115154604Sglebius 111696578Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, NGM_PPPOE_SESSIONID, 1117154604Sglebius sizeof(uint16_t), M_NOWAIT); 111896578Sbrian if (msg == NULL) 111996578Sbrian return (ENOMEM); 112096578Sbrian 1121154604Sglebius *(uint16_t *)msg->data = sp->Session_ID; 1122102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 112396578Sbrian 112496578Sbrian return (error); 112596578Sbrian} 112696578Sbrian 112752419Sjulian/* 1128172629Smav * Receive data from session hook and do something with it. 112952419Sjulian */ 113052419Sjulianstatic int 113170700Sjulianng_pppoe_rcvdata(hook_p hook, item_p item) 113252419Sjulian{ 113370784Sjulian node_p node = NG_HOOK_NODE(hook); 113470784Sjulian const priv_p privp = NG_NODE_PRIVATE(node); 113570784Sjulian sessp sp = NG_HOOK_PRIVATE(hook); 1136172629Smav struct pppoe_full_hdr *wh; 1137154604Sglebius struct mbuf *m; 1138172629Smav int error; 113952419Sjulian 1140154604Sglebius CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1141154604Sglebius __func__, node->nd_ID, node, item, hook->hk_name, hook); 1142154604Sglebius 114370700Sjulian NGI_GET_M(item, m); 1144172629Smav switch (sp->state) { 1145172629Smav case PPPOE_NEWCONNECTED: 1146172629Smav case PPPOE_CONNECTED: { 114752419Sjulian /* 1148172629Smav * Remove PPP address and control fields, if any. 1149172629Smav * For example, ng_ppp(4) always sends LCP packets 1150172629Smav * with address and control fields as required by 1151172629Smav * generic PPP. PPPoE is an exception to the rule. 115252419Sjulian */ 1153172629Smav if (m->m_pkthdr.len >= 2) { 1154172629Smav if (m->m_len < 2 && !(m = m_pullup(m, 2))) 1155172629Smav LEAVE(ENOBUFS); 1156176057Smav if (mtod(m, u_char *)[0] == 0xff && 1157176057Smav mtod(m, u_char *)[1] == 0x03) 1158172629Smav m_adj(m, 2); 1159172629Smav } 116052419Sjulian /* 1161172629Smav * Bang in a pre-made header, and set the length up 1162172629Smav * to be correct. Then send it to the ethernet driver. 116352419Sjulian */ 1164243882Sglebius M_PREPEND(m, sizeof(*wh), M_NOWAIT); 1165172629Smav if (m == NULL) 1166172629Smav LEAVE(ENOBUFS); 1167172629Smav 1168172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1169172629Smav bcopy(&sp->pkt_hdr, wh, sizeof(*wh)); 1170172629Smav wh->ph.length = htons(m->m_pkthdr.len - sizeof(*wh)); 1171172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m); 1172172629Smav privp->packets_out++; 1173172629Smav break; 1174172629Smav } 1175172629Smav case PPPOE_PRIMED: { 1176172629Smav struct { 1177172629Smav struct pppoe_tag hdr; 1178172629Smav union uniq data; 1179172629Smav } __packed uniqtag; 1180172629Smav const struct pppoe_tag *tag; 1181172629Smav struct mbuf *m0; 1182172629Smav const struct pppoe_hdr *ph; 1183172629Smav negp neg = sp->neg; 1184172629Smav uint16_t session; 1185172629Smav uint16_t length; 1186172629Smav uint8_t code; 1187172629Smav 1188172629Smav /* 1189172629Smav * A PADI packet is being returned by the application 1190172629Smav * that has set up this hook. This indicates that it 1191172629Smav * wants us to offer service. 1192172629Smav */ 1193172629Smav if (m->m_len < sizeof(*wh)) { 1194172629Smav m = m_pullup(m, sizeof(*wh)); 1195172629Smav if (m == NULL) 119652510Sjulian LEAVE(ENOBUFS); 119752419Sjulian } 119852419Sjulian wh = mtod(m, struct pppoe_full_hdr *); 1199172629Smav ph = &wh->ph; 1200172629Smav session = ntohs(wh->ph.sid); 120152419Sjulian length = ntohs(wh->ph.length); 1202172629Smav code = wh->ph.code; 1203172629Smav /* Use peers mode in session. */ 1204172629Smav neg->pkt->pkt_header.eh.ether_type = wh->eh.ether_type; 1205172629Smav if (code != PADI_CODE) 1206172629Smav LEAVE(EINVAL); 1207172629Smav ng_uncallout(&neg->handle, node); 120852419Sjulian 1209172629Smav /* 1210172629Smav * This is the first time we hear 1211172629Smav * from the client, so note it's 1212172629Smav * unicast address, replacing the 1213172629Smav * broadcast address. 1214172629Smav */ 1215172629Smav bcopy(wh->eh.ether_shost, 1216172629Smav neg->pkt->pkt_header.eh.ether_dhost, 1217172629Smav ETHER_ADDR_LEN); 1218172629Smav sp->state = PPPOE_SOFFER; 1219172629Smav neg->timeout = 0; 1220172629Smav neg->pkt->pkt_header.ph.code = PADO_CODE; 1221154862Sglebius 1222172629Smav /* 1223172629Smav * Start working out the tags to respond with. 1224172629Smav */ 1225172629Smav uniqtag.hdr.tag_type = PTT_AC_COOKIE; 1226172629Smav uniqtag.hdr.tag_len = htons((u_int16_t)sizeof(sp)); 1227172629Smav uniqtag.data.pointer = sp; 1228172629Smav init_tags(sp); 1229172629Smav insert_tag(sp, &neg->ac_name.hdr); /* AC_NAME */ 1230172629Smav if ((tag = get_tag(ph, PTT_SRV_NAME))) 1231172629Smav insert_tag(sp, tag); /* return service */ 1232172629Smav /* 1233172629Smav * If we have a NULL service request 1234172629Smav * and have an extra service defined in this hook, 1235172629Smav * then also add a tag for the extra service. 1236172629Smav * XXX this is a hack. eventually we should be able 1237172629Smav * to support advertising many services, not just one 1238172629Smav */ 1239172629Smav if (((tag == NULL) || (tag->tag_len == 0)) && 1240172629Smav (neg->service.hdr.tag_len != 0)) { 1241172629Smav insert_tag(sp, &neg->service.hdr); /* SERVICE */ 1242172629Smav } 1243172629Smav if ((tag = get_tag(ph, PTT_HOST_UNIQ))) 1244172629Smav insert_tag(sp, tag); /* returned hostunique */ 1245172629Smav insert_tag(sp, &uniqtag.hdr); 1246172629Smav scan_tags(sp, ph); 1247172629Smav make_packet(sp); 1248172629Smav /* 1249172629Smav * Send the offer but if they don't respond 1250172629Smav * in PPPOE_OFFER_TIMEOUT seconds, forget about it. 1251172629Smav */ 1252172629Smav ng_callout(&neg->handle, node, hook, PPPOE_OFFER_TIMEOUT * hz, 1253172629Smav pppoe_ticker, NULL, 0); 1254243882Sglebius m0 = m_copypacket(sp->neg->m, M_NOWAIT); 1255172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1256172629Smav privp->packets_out++; 1257172629Smav break; 1258172629Smav } 125952419Sjulian 1260172629Smav /* 1261172629Smav * Packets coming from the hook make no sense 1262172629Smav * to sessions in the rest of states. Throw them away. 1263172629Smav */ 1264172629Smav default: 1265172629Smav LEAVE(ENETUNREACH); 1266172629Smav } 1267172629Smavquit: 1268172629Smav if (item) 1269172629Smav NG_FREE_ITEM(item); 1270172629Smav NG_FREE_M(m); 1271172629Smav return (error); 1272172629Smav} 127352419Sjulian 1274172629Smav/* 1275172629Smav * Receive data from ether and do something with it. 1276172629Smav */ 1277172629Smavstatic int 1278172629Smavng_pppoe_rcvdata_ether(hook_p hook, item_p item) 1279172629Smav{ 1280172629Smav node_p node = NG_HOOK_NODE(hook); 1281172629Smav const priv_p privp = NG_NODE_PRIVATE(node); 1282208824Smav sessp sp; 1283172629Smav const struct pppoe_tag *utag = NULL, *tag = NULL; 1284172629Smav const struct pppoe_full_hdr *wh; 1285172629Smav const struct pppoe_hdr *ph; 1286172629Smav negp neg = NULL; 1287172629Smav struct mbuf *m; 1288172629Smav hook_p sendhook; 1289172629Smav int error = 0; 1290172629Smav uint16_t session; 1291172629Smav uint16_t length; 1292172629Smav uint8_t code; 1293172629Smav struct mbuf *m0; 129452419Sjulian 1295172629Smav CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1296172629Smav __func__, node->nd_ID, node, item, hook->hk_name, hook); 129752419Sjulian 1298172629Smav NGI_GET_M(item, m); 1299172629Smav /* 1300172629Smav * Dig out various fields from the packet. 1301172629Smav * Use them to decide where to send it. 1302172629Smav */ 1303172629Smav privp->packets_in++; 1304172629Smav if( m->m_len < sizeof(*wh)) { 1305172629Smav m = m_pullup(m, sizeof(*wh)); /* Checks length */ 1306172629Smav if (m == NULL) { 1307172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: couldn't " 1308172629Smav "m_pullup(wh)\n", node->nd_ID); 1309172629Smav LEAVE(ENOBUFS); 1310172629Smav } 1311172629Smav } 1312172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1313172629Smav length = ntohs(wh->ph.length); 1314172629Smav switch(wh->eh.ether_type) { 1315172629Smav case ETHERTYPE_PPPOE_3COM_DISC: /* fall through */ 1316172629Smav case ETHERTYPE_PPPOE_DISC: 1317172629Smav /* 1318172629Smav * We need to try to make sure that the tag area 1319172629Smav * is contiguous, or we could wander off the end 1320172629Smav * of a buffer and make a mess. 1321172629Smav * (Linux wouldn't have this problem). 1322172629Smav */ 1323172629Smav if (m->m_pkthdr.len <= MHLEN) { 1324172629Smav if( m->m_len < m->m_pkthdr.len) { 1325172629Smav m = m_pullup(m, m->m_pkthdr.len); 1326172629Smav if (m == NULL) { 1327172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: " 1328172629Smav "couldn't m_pullup(pkthdr)\n", 1329172629Smav node->nd_ID); 1330172629Smav LEAVE(ENOBUFS); 133152419Sjulian } 133252419Sjulian } 1333172629Smav } 1334172629Smav if (m->m_len != m->m_pkthdr.len) { 133552419Sjulian /* 1336172629Smav * It's not all in one piece. 1337172629Smav * We need to do extra work. 1338172629Smav * Put it into a cluster. 133952419Sjulian */ 1340172629Smav struct mbuf *n; 1341243882Sglebius n = m_dup(m, M_NOWAIT); 1342172629Smav m_freem(m); 1343172629Smav m = n; 1344172629Smav if (m) { 1345172629Smav /* just check we got a cluster */ 1346172629Smav if (m->m_len != m->m_pkthdr.len) { 1347172629Smav m_freem(m); 1348172629Smav m = NULL; 1349172629Smav } 135052419Sjulian } 1351172629Smav if (m == NULL) { 1352172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: packet " 1353172629Smav "fragmented\n", node->nd_ID); 135452419Sjulian LEAVE(EMSGSIZE); 135552419Sjulian } 135652419Sjulian } 1357172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1358172629Smav length = ntohs(wh->ph.length); 1359172629Smav ph = &wh->ph; 1360172629Smav session = ntohs(wh->ph.sid); 1361172629Smav code = wh->ph.code; 136264502Sarchie 1363172629Smav switch(code) { 1364172629Smav case PADI_CODE: 136552419Sjulian /* 1366172629Smav * We are a server: 1367172629Smav * Look for a hook with the required service and send 1368172629Smav * the ENTIRE packet up there. It should come back to 1369172629Smav * a new hook in PRIMED state. Look there for further 1370172629Smav * processing. 137164502Sarchie */ 1372172629Smav tag = get_tag(ph, PTT_SRV_NAME); 1373172629Smav if (tag == NULL) { 1374172629Smav CTR1(KTR_NET, "%20s: PADI w/o Service-Name", 1375172629Smav __func__); 1376172629Smav LEAVE(ENETUNREACH); 137764502Sarchie } 1378172629Smav 137964502Sarchie /* 1380172629Smav * First, try to match Service-Name against our 1381172629Smav * listening hooks. If no success and we are in D-Link 1382172629Smav * compat mode and Service-Name is empty, then we 1383172629Smav * broadcast the PADI to all listening hooks. 138452419Sjulian */ 1385172629Smav sendhook = pppoe_match_svc(node, tag); 1386172629Smav if (sendhook != NULL) 1387172629Smav NG_FWD_NEW_DATA(error, item, sendhook, m); 1388172629Smav else if (privp->flags & COMPAT_DLINK && 1389172629Smav ntohs(tag->tag_len) == 0) 1390172629Smav error = pppoe_broadcast_padi(node, m); 1391172629Smav else 1392172629Smav error = ENETUNREACH; 139352419Sjulian break; 1394172629Smav case PADO_CODE: 1395172629Smav /* 1396172629Smav * We are a client: 1397172629Smav * Use the host_uniq tag to find the hook this is in 1398172629Smav * response to. Received #2, now send #3 1399172629Smav * For now simply accept the first we receive. 1400172629Smav */ 1401172629Smav utag = get_tag(ph, PTT_HOST_UNIQ); 1402172629Smav if ((utag == NULL) || 1403172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1404172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: no host " 1405172629Smav "unique field\n", node->nd_ID); 1406172629Smav LEAVE(ENETUNREACH); 140752419Sjulian } 1408172629Smav 1409172629Smav sendhook = pppoe_finduniq(node, utag); 1410172629Smav if (sendhook == NULL) { 1411172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: no " 1412172629Smav "matching session\n", node->nd_ID); 1413172629Smav LEAVE(ENETUNREACH); 1414172629Smav } 1415172629Smav 141652419Sjulian /* 1417172629Smav * Check the session is in the right state. 1418172629Smav * It needs to be in PPPOE_SINIT. 141952419Sjulian */ 1420172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1421174981Smav if (sp->state == PPPOE_SREQ || 1422174981Smav sp->state == PPPOE_CONNECTED) { 1423174981Smav break; /* Multiple PADO is OK. */ 1424174981Smav } 1425172629Smav if (sp->state != PPPOE_SINIT) { 1426172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: session " 1427172629Smav "in wrong state\n", node->nd_ID); 1428172629Smav LEAVE(ENETUNREACH); 1429172629Smav } 143052419Sjulian neg = sp->neg; 1431174981Smav /* If requested specific AC-name, check it. */ 1432174981Smav if (neg->ac_name_len) { 1433174981Smav tag = get_tag(ph, PTT_AC_NAME); 1434174981Smav if (!tag) { 1435174981Smav /* No PTT_AC_NAME in PADO */ 1436174981Smav break; 1437174981Smav } 1438174981Smav if (neg->ac_name_len != htons(tag->tag_len) || 1439189315Sed strncmp(neg->ac_name.data, 1440189315Sed (const char *)(tag + 1), 1441174981Smav neg->ac_name_len) != 0) { 1442174981Smav break; 1443174981Smav } 1444174981Smav } 1445174981Smav sp->state = PPPOE_SREQ; 1446138562Sglebius ng_uncallout(&neg->handle, node); 144752419Sjulian 144852419Sjulian /* 144952419Sjulian * This is the first time we hear 1450172629Smav * from the server, so note it's 145152419Sjulian * unicast address, replacing the 1452172629Smav * broadcast address . 145352419Sjulian */ 145452419Sjulian bcopy(wh->eh.ether_shost, 145552419Sjulian neg->pkt->pkt_header.eh.ether_dhost, 145652419Sjulian ETHER_ADDR_LEN); 145752419Sjulian neg->timeout = 0; 1458172629Smav neg->pkt->pkt_header.ph.code = PADR_CODE; 1459172629Smav init_tags(sp); 1460172629Smav insert_tag(sp, utag); /* Host Unique */ 1461172629Smav if ((tag = get_tag(ph, PTT_AC_COOKIE))) 1462172629Smav insert_tag(sp, tag); /* return cookie */ 1463172629Smav if ((tag = get_tag(ph, PTT_AC_NAME))) { 1464172629Smav insert_tag(sp, tag); /* return it */ 1465172629Smav send_acname(sp, tag); 1466172629Smav } 1467172629Smav insert_tag(sp, &neg->service.hdr); /* Service */ 1468172629Smav scan_tags(sp, ph); 1469172629Smav make_packet(sp); 1470172629Smav sp->state = PPPOE_SREQ; 1471172629Smav ng_callout(&neg->handle, node, sp->hook, 1472172629Smav PPPOE_INITIAL_TIMEOUT * hz, 1473172629Smav pppoe_ticker, NULL, 0); 1474172629Smav neg->timeout = PPPOE_INITIAL_TIMEOUT * 2; 1475243882Sglebius m0 = m_copypacket(neg->m, M_NOWAIT); 1476172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1477172629Smav break; 1478172629Smav case PADR_CODE: 1479172629Smav /* 1480172629Smav * We are a server: 1481172629Smav * Use the ac_cookie tag to find the 1482172629Smav * hook this is in response to. 1483172629Smav */ 1484172629Smav utag = get_tag(ph, PTT_AC_COOKIE); 1485172629Smav if ((utag == NULL) || 1486172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1487172629Smav LEAVE(ENETUNREACH); 1488172629Smav } 148952419Sjulian 1490172629Smav sendhook = pppoe_finduniq(node, utag); 1491172629Smav if (sendhook == NULL) 1492172629Smav LEAVE(ENETUNREACH); 1493172629Smav 149452419Sjulian /* 1495172629Smav * Check the session is in the right state. 1496172629Smav * It needs to be in PPPOE_SOFFER or PPPOE_NEWCONNECTED. 1497172629Smav * If the latter, then this is a retry by the client, 1498172629Smav * so be nice, and resend. 149952419Sjulian */ 1500172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1501172629Smav if (sp->state == PPPOE_NEWCONNECTED) { 1502172629Smav /* 1503172629Smav * Whoa! drop back to resend that PADS packet. 1504172629Smav * We should still have a copy of it. 1505172629Smav */ 1506172629Smav sp->state = PPPOE_SOFFER; 1507175865Smav } else if (sp->state != PPPOE_SOFFER) 1508172629Smav LEAVE (ENETUNREACH); 1509172629Smav neg = sp->neg; 1510172629Smav ng_uncallout(&neg->handle, node); 1511172629Smav neg->pkt->pkt_header.ph.code = PADS_CODE; 1512175865Smav if (sp->Session_ID == 0) { 1513172629Smav neg->pkt->pkt_header.ph.sid = 1514176753Smav htons(pppoe_getnewsession(sp)); 1515175865Smav } 1516172629Smav send_sessionid(sp); 1517172629Smav neg->timeout = 0; 1518172629Smav /* 1519172629Smav * start working out the tags to respond with. 1520172629Smav */ 152152419Sjulian init_tags(sp); 152252419Sjulian insert_tag(sp, &neg->ac_name.hdr); /* AC_NAME */ 152353154Sjulian if ((tag = get_tag(ph, PTT_SRV_NAME))) 1524172629Smav insert_tag(sp, tag);/* return service */ 152553154Sjulian if ((tag = get_tag(ph, PTT_HOST_UNIQ))) 1526172629Smav insert_tag(sp, tag); /* return it */ 1527172629Smav insert_tag(sp, utag); /* ac_cookie */ 152852419Sjulian scan_tags(sp, ph); 152952419Sjulian make_packet(sp); 1530172629Smav sp->state = PPPOE_NEWCONNECTED; 1531172629Smav 1532172629Smav /* Send the PADS without a timeout - we're now connected. */ 1533243882Sglebius m0 = m_copypacket(sp->neg->m, M_NOWAIT); 1534172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1535172629Smav 1536172628Smav /* 1537172629Smav * Having sent the last Negotiation header, 1538172629Smav * Set up the stored packet header to be correct for 1539172629Smav * the actual session. But keep the negotialtion stuff 1540172629Smav * around in case we need to resend this last packet. 1541172629Smav * We'll discard it when we move from NEWCONNECTED 1542172629Smav * to CONNECTED 1543172628Smav */ 1544172629Smav sp->pkt_hdr = neg->pkt->pkt_header; 1545172629Smav /* Configure ethertype depending on what 1546172629Smav * ethertype was used at discovery phase */ 1547172629Smav if (sp->pkt_hdr.eh.ether_type == 1548172629Smav ETHERTYPE_PPPOE_3COM_DISC) 1549172629Smav sp->pkt_hdr.eh.ether_type 1550172629Smav = ETHERTYPE_PPPOE_3COM_SESS; 1551172629Smav else 1552172629Smav sp->pkt_hdr.eh.ether_type 1553172629Smav = ETHERTYPE_PPPOE_SESS; 1554172629Smav sp->pkt_hdr.ph.code = 0; 1555172629Smav pppoe_send_event(sp, NGM_PPPOE_SUCCESS); 155652419Sjulian break; 1557172629Smav case PADS_CODE: 1558172629Smav /* 1559172629Smav * We are a client: 1560172629Smav * Use the host_uniq tag to find the hook this is in 1561172629Smav * response to. Take the session ID and store it away. 1562172629Smav * Also make sure the pre-made header is correct and 1563172629Smav * set us into Session mode. 1564172629Smav */ 1565172629Smav utag = get_tag(ph, PTT_HOST_UNIQ); 1566172629Smav if ((utag == NULL) || 1567172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1568172629Smav LEAVE (ENETUNREACH); 1569172629Smav } 1570172629Smav sendhook = pppoe_finduniq(node, utag); 1571172629Smav if (sendhook == NULL) 1572172629Smav LEAVE(ENETUNREACH); 157352419Sjulian 1574172629Smav /* 1575172629Smav * Check the session is in the right state. 1576172629Smav * It needs to be in PPPOE_SREQ. 1577172629Smav */ 1578172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1579172629Smav if (sp->state != PPPOE_SREQ) 1580172629Smav LEAVE(ENETUNREACH); 1581172629Smav neg = sp->neg; 1582172629Smav ng_uncallout(&neg->handle, node); 1583172629Smav neg->pkt->pkt_header.ph.sid = wh->ph.sid; 1584172629Smav sp->Session_ID = ntohs(wh->ph.sid); 1585175865Smav pppoe_addsession(sp); 1586172629Smav send_sessionid(sp); 1587172629Smav neg->timeout = 0; 1588172629Smav sp->state = PPPOE_CONNECTED; 1589172629Smav /* 1590172629Smav * Now we have gone to Connected mode, 1591172629Smav * Free all resources needed for negotiation. 1592172629Smav * Keep a copy of the header we will be using. 1593172629Smav */ 1594172629Smav sp->pkt_hdr = neg->pkt->pkt_header; 1595172629Smav if (privp->flags & COMPAT_3COM) 1596172629Smav sp->pkt_hdr.eh.ether_type 1597172629Smav = ETHERTYPE_PPPOE_3COM_SESS; 1598172629Smav else 1599172629Smav sp->pkt_hdr.eh.ether_type 1600172629Smav = ETHERTYPE_PPPOE_SESS; 1601172629Smav sp->pkt_hdr.ph.code = 0; 1602172629Smav m_freem(neg->m); 1603172629Smav free(sp->neg, M_NETGRAPH_PPPOE); 1604172629Smav sp->neg = NULL; 1605172629Smav pppoe_send_event(sp, NGM_PPPOE_SUCCESS); 1606172629Smav break; 1607172629Smav case PADT_CODE: 1608172629Smav /* 1609172629Smav * Find matching peer/session combination. 1610172629Smav */ 1611175865Smav sp = pppoe_findsession(privp, wh); 1612175865Smav if (sp == NULL) 1613172629Smav LEAVE(ENETUNREACH); 1614172629Smav /* Disconnect that hook. */ 1615175865Smav ng_rmhook_self(sp->hook); 1616172629Smav break; 1617172629Smav default: 1618172629Smav LEAVE(EPFNOSUPPORT); 1619172629Smav } 1620172629Smav break; 1621172629Smav case ETHERTYPE_PPPOE_3COM_SESS: 1622172629Smav case ETHERTYPE_PPPOE_SESS: 162352419Sjulian /* 1624172629Smav * Find matching peer/session combination. 162552419Sjulian */ 1626175865Smav sp = pppoe_findsession(privp, wh); 1627175865Smav if (sp == NULL) 1628172629Smav LEAVE (ENETUNREACH); 1629172629Smav m_adj(m, sizeof(*wh)); 1630172629Smav 1631172629Smav /* If packet too short, dump it. */ 1632172629Smav if (m->m_pkthdr.len < length) 1633172629Smav LEAVE(EMSGSIZE); 1634172629Smav /* Also need to trim excess at the end */ 1635172629Smav if (m->m_pkthdr.len > length) { 1636172629Smav m_adj(m, -((int)(m->m_pkthdr.len - length))); 163752419Sjulian } 1638172629Smav if ( sp->state != PPPOE_CONNECTED) { 1639172629Smav if (sp->state == PPPOE_NEWCONNECTED) { 1640172629Smav sp->state = PPPOE_CONNECTED; 1641172629Smav /* 1642172629Smav * Now we have gone to Connected mode, 1643172629Smav * Free all resources needed for negotiation. 1644172629Smav * Be paranoid about whether there may be 1645172629Smav * a timeout. 1646172629Smav */ 1647172629Smav m_freem(sp->neg->m); 1648172629Smav ng_uncallout(&sp->neg->handle, node); 1649172629Smav free(sp->neg, M_NETGRAPH_PPPOE); 1650172629Smav sp->neg = NULL; 1651172629Smav } else { 1652172629Smav LEAVE (ENETUNREACH); 1653172629Smav } 1654172629Smav } 1655175865Smav NG_FWD_NEW_DATA(error, item, sp->hook, m); 1656172629Smav break; 1657172629Smav default: 1658172629Smav LEAVE(EPFNOSUPPORT); 165952419Sjulian } 166052419Sjulianquit: 166170914Sjulian if (item) 166270914Sjulian NG_FREE_ITEM(item); 166370700Sjulian NG_FREE_M(m); 1664172629Smav return (error); 166552419Sjulian} 166652419Sjulian 166752419Sjulian/* 1668172629Smav * Receive data from debug hook and bypass it to ether. 1669172629Smav */ 1670172629Smavstatic int 1671172629Smavng_pppoe_rcvdata_debug(hook_p hook, item_p item) 1672172629Smav{ 1673172629Smav node_p node = NG_HOOK_NODE(hook); 1674172629Smav const priv_p privp = NG_NODE_PRIVATE(node); 1675172629Smav int error; 1676172629Smav 1677172629Smav CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1678172629Smav __func__, node->nd_ID, node, item, hook->hk_name, hook); 1679172629Smav 1680172629Smav NG_FWD_ITEM_HOOK(error, item, privp->ethernet_hook); 1681172629Smav privp->packets_out++; 1682172629Smav return (error); 1683172629Smav} 1684172629Smav 1685172629Smav/* 168652419Sjulian * Do local shutdown processing.. 168752419Sjulian * If we are a persistant device, we might refuse to go away, and 168852419Sjulian * we'd only remove our links and reset ourself. 168952419Sjulian */ 169052419Sjulianstatic int 169170700Sjulianng_pppoe_shutdown(node_p node) 169252419Sjulian{ 1693175865Smav const priv_p privp = NG_NODE_PRIVATE(node); 1694175865Smav int i; 169552419Sjulian 1696175865Smav for (i = 0; i < SESSHASHSIZE; i++) 1697175865Smav mtx_destroy(&privp->sesshash[i].mtx); 169870784Sjulian NG_NODE_SET_PRIVATE(node, NULL); 1699175865Smav NG_NODE_UNREF(privp->node); 1700175865Smav free(privp, M_NETGRAPH_PPPOE); 170152419Sjulian return (0); 170252419Sjulian} 170352419Sjulian 170452419Sjulian/* 170552419Sjulian * Hook disconnection 170652419Sjulian * 170753498Sjulian * Clean up all dangling links and information about the session/hook. 1708154604Sglebius * For this type, removal of the last link destroys the node. 170952419Sjulian */ 171052419Sjulianstatic int 171152562Sjulianng_pppoe_disconnect(hook_p hook) 171252419Sjulian{ 171370784Sjulian node_p node = NG_HOOK_NODE(hook); 171470784Sjulian priv_p privp = NG_NODE_PRIVATE(node); 171552419Sjulian sessp sp; 171652419Sjulian 1717172270Smav if (hook == privp->debug_hook) { 171852419Sjulian privp->debug_hook = NULL; 1719172270Smav } else if (hook == privp->ethernet_hook) { 172052419Sjulian privp->ethernet_hook = NULL; 172170784Sjulian if (NG_NODE_IS_VALID(node)) 172270700Sjulian ng_rmnode_self(node); 172352419Sjulian } else { 172470784Sjulian sp = NG_HOOK_PRIVATE(hook); 172552441Sjulian if (sp->state != PPPOE_SNONE ) { 172652441Sjulian pppoe_send_event(sp, NGM_PPPOE_CLOSE); 172752441Sjulian } 172859728Sjulian /* 172959728Sjulian * According to the spec, if we are connected, 173059728Sjulian * we should send a DISC packet if we are shutting down 173159728Sjulian * a session. 173259728Sjulian */ 173352523Sjulian if ((privp->ethernet_hook) 173452523Sjulian && ((sp->state == PPPOE_CONNECTED) 173552523Sjulian || (sp->state == PPPOE_NEWCONNECTED))) { 173652523Sjulian struct mbuf *m; 173752523Sjulian 1738154604Sglebius /* Generate a packet of that type. */ 1739243882Sglebius MGETHDR(m, M_NOWAIT, MT_DATA); 1740161034Sglebius if (m == NULL) 1741161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: session out of " 1742161034Sglebius "mbufs\n", node->nd_ID); 174353498Sjulian else { 1744172269Smav struct pppoe_full_hdr *wh; 1745172269Smav struct pppoe_tag *tag; 1746172269Smav int msglen = strlen(SIGNOFF); 1747172269Smav int error = 0; 1748172269Smav 174953498Sjulian m->m_pkthdr.rcvif = NULL; 175053498Sjulian m->m_pkthdr.len = m->m_len = sizeof(*wh); 1751172269Smav wh = mtod(m, struct pppoe_full_hdr *); 1752172269Smav bcopy(&sp->pkt_hdr, wh, sizeof(*wh)); 1753172269Smav 1754172269Smav /* Revert the stored header to DISC/PADT mode. */ 1755172269Smav wh->ph.code = PADT_CODE; 175653498Sjulian /* 1757172269Smav * Configure ethertype depending on what 1758172269Smav * was used during sessions stage. 1759172269Smav */ 1760172269Smav if (wh->eh.ether_type == 1761172269Smav ETHERTYPE_PPPOE_3COM_SESS) 1762172269Smav wh->eh.ether_type = ETHERTYPE_PPPOE_3COM_DISC; 1763172269Smav else 1764172269Smav wh->eh.ether_type = ETHERTYPE_PPPOE_DISC; 1765172269Smav /* 176653498Sjulian * Add a General error message and adjust 1767154604Sglebius * sizes. 176853498Sjulian */ 1769189315Sed tag = (void *)(&wh->ph + 1); 177053498Sjulian tag->tag_type = PTT_GEN_ERR; 177153498Sjulian tag->tag_len = htons((u_int16_t)msglen); 1772189315Sed strncpy((char *)(tag + 1), SIGNOFF, msglen); 177353498Sjulian m->m_pkthdr.len = (m->m_len += sizeof(*tag) + 177453498Sjulian msglen); 177553498Sjulian wh->ph.length = htons(sizeof(*tag) + msglen); 177670700Sjulian NG_SEND_DATA_ONLY(error, 177770700Sjulian privp->ethernet_hook, m); 177853498Sjulian } 177952523Sjulian } 1780176775Smav if (sp->state == PPPOE_LISTENING) 1781176775Smav LIST_REMOVE(sp, sessions); 1782176775Smav else if (sp->Session_ID) 1783175865Smav pppoe_delsession(sp); 178459728Sjulian /* 178563138Sasmodai * As long as we have somewhere to store the timeout handle, 178659728Sjulian * we may have a timeout pending.. get rid of it. 178759728Sjulian */ 178852443Sjulian if (sp->neg) { 1789138562Sglebius ng_uncallout(&sp->neg->handle, node); 179052443Sjulian if (sp->neg->m) 179152443Sjulian m_freem(sp->neg->m); 1792154604Sglebius free(sp->neg, M_NETGRAPH_PPPOE); 179352443Sjulian } 1794154604Sglebius free(sp, M_NETGRAPH_PPPOE); 179570784Sjulian NG_HOOK_SET_PRIVATE(hook, NULL); 179652419Sjulian } 1797154604Sglebius if ((NG_NODE_NUMHOOKS(node) == 0) && 1798154604Sglebius (NG_NODE_IS_VALID(node))) 179970700Sjulian ng_rmnode_self(node); 180052419Sjulian return (0); 180152419Sjulian} 180252419Sjulian 180352419Sjulian/* 1804154604Sglebius * Timeouts come here. 180552419Sjulian */ 180652419Sjulianstatic void 1807138562Sglebiuspppoe_ticker(node_p node, hook_p hook, void *arg1, int arg2) 180852419Sjulian{ 1809154604Sglebius priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 181070784Sjulian sessp sp = NG_HOOK_PRIVATE(hook); 181152419Sjulian negp neg = sp->neg; 1812154604Sglebius struct mbuf *m0 = NULL; 181352419Sjulian int error = 0; 181452419Sjulian 1815154604Sglebius CTR6(KTR_NET, "%20s: node [%x] (%p) hook \"%s\" (%p) session %d", 1816154604Sglebius __func__, node->nd_ID, node, hook->hk_name, hook, sp->Session_ID); 181752419Sjulian switch(sp->state) { 181852419Sjulian /* 1819154604Sglebius * Resend the last packet, using an exponential backoff. 182052419Sjulian * After a period of time, stop growing the backoff, 1821154604Sglebius * And either leave it, or revert to the start. 182252419Sjulian */ 182352419Sjulian case PPPOE_SINIT: 182452419Sjulian case PPPOE_SREQ: 1825154604Sglebius /* Timeouts on these produce resends. */ 1826243882Sglebius m0 = m_copypacket(sp->neg->m, M_NOWAIT); 182770700Sjulian NG_SEND_DATA_ONLY( error, privp->ethernet_hook, m0); 1828138562Sglebius ng_callout(&neg->handle, node, hook, neg->timeout * hz, 1829138562Sglebius pppoe_ticker, NULL, 0); 183052419Sjulian if ((neg->timeout <<= 1) > PPPOE_TIMEOUT_LIMIT) { 183152419Sjulian if (sp->state == PPPOE_SREQ) { 1832154604Sglebius /* Revert to SINIT mode. */ 183352441Sjulian pppoe_start(sp); 183452419Sjulian } else { 183552419Sjulian neg->timeout = PPPOE_TIMEOUT_LIMIT; 183652419Sjulian } 183752419Sjulian } 183852419Sjulian break; 183952419Sjulian case PPPOE_PRIMED: 184052419Sjulian case PPPOE_SOFFER: 1841154604Sglebius /* A timeout on these says "give up" */ 184270935Sjulian ng_rmhook_self(hook); 184352419Sjulian break; 184452419Sjulian default: 1845154604Sglebius /* Timeouts have no meaning in other states. */ 1846161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: unexpected timeout\n", 1847161034Sglebius node->nd_ID); 184852419Sjulian } 184952419Sjulian} 185052419Sjulian 185152419Sjulian/* 185252419Sjulian * Parse an incoming packet to see if any tags should be copied to the 185353145Sjulian * output packet. Don't do any tags that have been handled in the main 185453145Sjulian * state machine. 185552419Sjulian */ 1856154604Sglebiusstatic const struct pppoe_tag* 185797897Sarchiescan_tags(sessp sp, const struct pppoe_hdr* ph) 185852419Sjulian{ 185997897Sarchie const char *const end = (const char *)next_tag(ph); 186097897Sarchie const char *ptn; 1861189315Sed const struct pppoe_tag *pt = (const void *)(ph + 1); 1862154604Sglebius 186352419Sjulian /* 186452419Sjulian * Keep processing tags while a tag header will still fit. 186552419Sjulian */ 1866154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1867154604Sglebius 186897897Sarchie while((const char*)(pt + 1) <= end) { 186952419Sjulian /* 187052419Sjulian * If the tag data would go past the end of the packet, abort. 187152419Sjulian */ 187297897Sarchie ptn = (((const char *)(pt + 1)) + ntohs(pt->tag_len)); 187352419Sjulian if(ptn > end) 187452419Sjulian return NULL; 187552419Sjulian 187652419Sjulian switch (pt->tag_type) { 187752419Sjulian case PTT_RELAY_SID: 187852419Sjulian insert_tag(sp, pt); 187952419Sjulian break; 188052419Sjulian case PTT_EOL: 188152419Sjulian return NULL; 188252419Sjulian case PTT_SRV_NAME: 188352419Sjulian case PTT_AC_NAME: 188452419Sjulian case PTT_HOST_UNIQ: 188552419Sjulian case PTT_AC_COOKIE: 188652419Sjulian case PTT_VENDOR: 188752419Sjulian case PTT_SRV_ERR: 188852419Sjulian case PTT_SYS_ERR: 188952419Sjulian case PTT_GEN_ERR: 1890253564Sglebius case PTT_MAX_PAYL: 189152419Sjulian break; 189252419Sjulian } 189397897Sarchie pt = (const struct pppoe_tag*)ptn; 189452419Sjulian } 189552419Sjulian return NULL; 189652419Sjulian} 189752419Sjulian 189852441Sjulianstatic int 189952441Sjulianpppoe_send_event(sessp sp, enum cmd cmdid) 190052441Sjulian{ 190152441Sjulian int error; 190252441Sjulian struct ng_mesg *msg; 190352562Sjulian struct ngpppoe_sts *sts; 190452441Sjulian 1905154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1906154604Sglebius 190768845Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, cmdid, 190852562Sjulian sizeof(struct ngpppoe_sts), M_NOWAIT); 190969922Sjulian if (msg == NULL) 191069922Sjulian return (ENOMEM); 191152562Sjulian sts = (struct ngpppoe_sts *)msg->data; 1912125028Sharti strncpy(sts->hook, NG_HOOK_NAME(sp->hook), NG_HOOKSIZ); 1913102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 191452441Sjulian return (error); 191552441Sjulian} 1916