ng_pppoe.c revision 175867
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: head/sys/netgraph/ng_pppoe.c 175867 2008-02-01 07:25:06Z mav $ 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 6170870SjulianMALLOC_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 */ 238175865Smav TAILQ_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; 247175865Smav TAILQ_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; 263175865Smav struct sess_hash_entry sesshash[SESSHASHSIZE]; 26452419Sjulian}; 265154604Sglebiustypedef struct PPPoE *priv_p; 26652419Sjulian 26752419Sjulianunion uniq { 26852419Sjulian char bytes[sizeof(void *)]; 269154604Sglebius void *pointer; 270154604Sglebius}; 27152419Sjulian 27252419Sjulian#define LEAVE(x) do { error = x; goto quit; } while(0) 27352419Sjulianstatic void pppoe_start(sessp sp); 274138562Sglebiusstatic void pppoe_ticker(node_p node, hook_p hook, void *arg1, int arg2); 27597897Sarchiestatic const struct pppoe_tag *scan_tags(sessp sp, 27697897Sarchie const struct pppoe_hdr* ph); 27752441Sjulianstatic int pppoe_send_event(sessp sp, enum cmd cmdid); 27852419Sjulian 27952419Sjulian/************************************************************************* 28052419Sjulian * Some basic utilities from the Linux version with author's permission.* 28152419Sjulian * Author: Michal Ostrowski <mostrows@styx.uwaterloo.ca> * 28252419Sjulian ************************************************************************/ 28352419Sjulian 28452419Sjulian/* 28552419Sjulian * Generate a new session id 28653145Sjulian * XXX find out the FreeBSD locking scheme. 28752419Sjulian */ 288154604Sglebiusstatic uint16_t 28952419Sjulianget_new_sid(node_p node) 29052419Sjulian{ 29152419Sjulian static int pppoe_sid = 10; 29252419Sjulian hook_p hook; 293154604Sglebius uint16_t val; 29452419Sjulian 29552419Sjulianrestart: 29652419Sjulian val = pppoe_sid++; 29752419Sjulian /* 29852419Sjulian * Spec says 0xFFFF is reserved. 29952419Sjulian * Also don't use 0x0000 30052419Sjulian */ 30152419Sjulian if (val == 0xffff) { 30252419Sjulian pppoe_sid = 20; 30352419Sjulian goto restart; 30452419Sjulian } 30552419Sjulian 306154604Sglebius /* Check it isn't already in use. */ 30770784Sjulian LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 308172270Smav sessp sp = NG_HOOK_PRIVATE(hook); 309172270Smav 310172270Smav /* Skip any nonsession hook. */ 311172270Smav if (sp == NULL) 31252419Sjulian continue; 31352419Sjulian if (sp->Session_ID == val) 31452419Sjulian goto restart; 31552419Sjulian } 31652419Sjulian 317154604Sglebius CTR2(KTR_NET, "%20s: new sid %d", __func__, val); 318154604Sglebius 319154604Sglebius return (val); 32052419Sjulian} 32152419Sjulian 32252419Sjulian 32352419Sjulian/* 324154604Sglebius * Return the location where the next tag can be put 32552419Sjulian */ 32697897Sarchiestatic __inline const struct pppoe_tag* 32797897Sarchienext_tag(const struct pppoe_hdr* ph) 32852419Sjulian{ 32997897Sarchie return (const struct pppoe_tag*)(((const char*)&ph->tag[0]) 33097897Sarchie + ntohs(ph->length)); 33152419Sjulian} 33252419Sjulian 33352419Sjulian/* 334154604Sglebius * Look for a tag of a specific type. 335154604Sglebius * Don't trust any length the other end says, 33652419Sjulian * but assume we already sanity checked ph->length. 33752419Sjulian */ 33897897Sarchiestatic const struct pppoe_tag* 339154604Sglebiusget_tag(const struct pppoe_hdr* ph, uint16_t idx) 34052419Sjulian{ 34197897Sarchie const char *const end = (const char *)next_tag(ph); 342154604Sglebius const struct pppoe_tag *pt = &ph->tag[0]; 34397897Sarchie const char *ptn; 344154604Sglebius 34552419Sjulian /* 34652419Sjulian * Keep processing tags while a tag header will still fit. 34752419Sjulian */ 34897897Sarchie while((const char*)(pt + 1) <= end) { 349154604Sglebius /* 350154604Sglebius * If the tag data would go past the end of the packet, abort. 351154604Sglebius */ 352154604Sglebius ptn = (((const char *)(pt + 1)) + ntohs(pt->tag_len)); 353154604Sglebius if (ptn > end) { 354154604Sglebius CTR2(KTR_NET, "%20s: invalid length for tag %d", 355154604Sglebius __func__, idx); 356154604Sglebius return (NULL); 357154604Sglebius } 358154604Sglebius if (pt->tag_type == idx) { 359154604Sglebius CTR2(KTR_NET, "%20s: found tag %d", __func__, idx); 360154604Sglebius return (pt); 361154604Sglebius } 36252419Sjulian 363154604Sglebius pt = (const struct pppoe_tag*)ptn; 364154604Sglebius } 36552419Sjulian 366154604Sglebius CTR2(KTR_NET, "%20s: not found tag %d", __func__, idx); 367154604Sglebius return (NULL); 36852419Sjulian} 36952419Sjulian 37052419Sjulian/************************************************************************** 371154604Sglebius * Inlines to initialise or add tags to a session's tag list. 37252419Sjulian **************************************************************************/ 37352419Sjulian/* 374154604Sglebius * Initialise the session's tag list. 37552419Sjulian */ 37652419Sjulianstatic void 37752419Sjulianinit_tags(sessp sp) 37852419Sjulian{ 379154604Sglebius KASSERT(sp->neg != NULL, ("%s: no neg", __func__)); 38052419Sjulian sp->neg->numtags = 0; 38152419Sjulian} 38252419Sjulian 38352419Sjulianstatic void 38497897Sarchieinsert_tag(sessp sp, const struct pppoe_tag *tp) 38552419Sjulian{ 386154604Sglebius negp neg = sp->neg; 387154604Sglebius int i; 38852419Sjulian 389154604Sglebius KASSERT(neg != NULL, ("%s: no neg", __func__)); 39052419Sjulian if ((i = neg->numtags++) < NUMTAGS) { 39152419Sjulian neg->tags[i] = tp; 39252419Sjulian } else { 393161034Sglebius log(LOG_NOTICE, "ng_pppoe: asked to add too many tags to " 394161034Sglebius "packet\n"); 39553042Sjulian neg->numtags--; 39652419Sjulian } 39752419Sjulian} 39852419Sjulian 39952419Sjulian/* 40052419Sjulian * Make up a packet, using the tags filled out for the session. 40152419Sjulian * 402154604Sglebius * Assume that the actual pppoe header and ethernet header 40352419Sjulian * are filled out externally to this routine. 404154604Sglebius * Also assume that neg->wh points to the correct 40552419Sjulian * location at the front of the buffer space. 40652419Sjulian */ 40752419Sjulianstatic void 40852419Sjulianmake_packet(sessp sp) { 40952419Sjulian struct pppoe_full_hdr *wh = &sp->neg->pkt->pkt_header; 41097897Sarchie const struct pppoe_tag **tag; 41152419Sjulian char *dp; 41252419Sjulian int count; 41352419Sjulian int tlen; 414154604Sglebius uint16_t length = 0; 41552419Sjulian 416154604Sglebius KASSERT((sp->neg != NULL) && (sp->neg->m != NULL), 417161034Sglebius ("%s: called from wrong state", __func__)); 418154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 419154604Sglebius 42052419Sjulian dp = (char *)wh->ph.tag; 42152419Sjulian for (count = 0, tag = sp->neg->tags; 422154604Sglebius ((count < sp->neg->numtags) && (count < NUMTAGS)); 42352419Sjulian tag++, count++) { 42452419Sjulian tlen = ntohs((*tag)->tag_len) + sizeof(**tag); 42552419Sjulian if ((length + tlen) > (ETHER_MAX_LEN - 4 - sizeof(*wh))) { 426161034Sglebius log(LOG_NOTICE, "ng_pppoe: tags too long\n"); 42752419Sjulian sp->neg->numtags = count; 42852419Sjulian break; /* XXX chop off what's too long */ 42952419Sjulian } 43097897Sarchie bcopy(*tag, (char *)dp, tlen); 43152419Sjulian length += tlen; 43252419Sjulian dp += tlen; 43352419Sjulian } 43452419Sjulian wh->ph.length = htons(length); 43552419Sjulian sp->neg->m->m_len = length + sizeof(*wh); 43652419Sjulian sp->neg->m->m_pkthdr.len = length + sizeof(*wh); 43752419Sjulian} 43852419Sjulian 43952419Sjulian/************************************************************************** 440154862Sglebius * Routines to match a service. * 44152419Sjulian **************************************************************************/ 442154862Sglebius 443154604Sglebius/* 44452419Sjulian * Find a hook that has a service string that matches that 445154862Sglebius * we are seeking. For now use a simple string. 44652419Sjulian * In the future we may need something like regexp(). 447154862Sglebius * 448154862Sglebius * Null string is a wildcard (ANY service), according to RFC2516. 449154862Sglebius * And historical FreeBSD wildcard is also "*". 45052419Sjulian */ 45180311Sbrian 45252419Sjulianstatic hook_p 453154862Sglebiuspppoe_match_svc(node_p node, const struct pppoe_tag *tag) 45452419Sjulian{ 455154862Sglebius hook_p hook; 45652419Sjulian 45770784Sjulian LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 458154862Sglebius sessp sp = NG_HOOK_PRIVATE(hook); 459154862Sglebius negp neg; 46052419Sjulian 461172270Smav /* Skip any nonsession hook. */ 462172270Smav if (sp == NULL) 46352419Sjulian continue; 46452419Sjulian 46552419Sjulian /* Skip any sessions which are not in LISTEN mode. */ 466154862Sglebius if (sp->state != PPPOE_LISTENING) 46752419Sjulian continue; 46852419Sjulian 46952419Sjulian neg = sp->neg; 47052419Sjulian 471154862Sglebius /* Empty Service-Name matches any service. */ 472154862Sglebius if (neg->service_len == 0) 473154862Sglebius break; 47452419Sjulian 475154862Sglebius /* Special case for a blank or "*" service name (wildcard). */ 476154862Sglebius if (neg->service_len == 1 && neg->service.data[0] == '*') 477154862Sglebius break; 478154862Sglebius 47952419Sjulian /* If the lengths don't match, that aint it. */ 480154862Sglebius if (neg->service_len != ntohs(tag->tag_len)) 48152419Sjulian continue; 48252419Sjulian 483154862Sglebius if (strncmp(tag->tag_data, neg->service.data, 484154862Sglebius ntohs(tag->tag_len)) == 0) 48580311Sbrian break; 486154862Sglebius } 487154862Sglebius CTR3(KTR_NET, "%20s: matched %p for %s", __func__, hook, tag->tag_data); 48880311Sbrian 489154862Sglebius return (hook); 490154862Sglebius} 491154862Sglebius 492154862Sglebius/* 493154862Sglebius * Broadcast the PADI packet in m0 to all listening hooks. 494154862Sglebius * This routine is called when a PADI with empty Service-Name 495154862Sglebius * tag is received. Client should receive PADOs with all 496154862Sglebius * available services. 497154862Sglebius */ 498154862Sglebiusstatic int 499154862Sglebiuspppoe_broadcast_padi(node_p node, struct mbuf *m0) 500154862Sglebius{ 501154862Sglebius hook_p hook; 502154862Sglebius int error = 0; 503154862Sglebius 504154862Sglebius LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 505154862Sglebius sessp sp = NG_HOOK_PRIVATE(hook); 506154862Sglebius struct mbuf *m; 507154862Sglebius 508154862Sglebius /* 509154862Sglebius * Go through all listening hooks and 510154862Sglebius * broadcast the PADI packet up there 511154862Sglebius */ 512172270Smav if (sp == NULL) 513154862Sglebius continue; 514154862Sglebius 515154862Sglebius if (sp->state != PPPOE_LISTENING) 516154862Sglebius continue; 517154862Sglebius 518154862Sglebius m = m_dup(m0, M_DONTWAIT); 519154862Sglebius if (m == NULL) 520154862Sglebius return (ENOMEM); 521154862Sglebius NG_SEND_DATA_ONLY(error, hook, m); 522154862Sglebius if (error) 523154862Sglebius return (error); 52452419Sjulian } 525154604Sglebius 526154862Sglebius return (0); 52752419Sjulian} 528154604Sglebius 529154862Sglebius/* 530154862Sglebius * Find a hook, which name equals to given service. 531154862Sglebius */ 532154862Sglebiusstatic hook_p 533154862Sglebiuspppoe_find_svc(node_p node, const char *svc_name, int svc_len) 534154862Sglebius{ 535154862Sglebius hook_p hook; 536154862Sglebius 537154862Sglebius LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 538154862Sglebius sessp sp = NG_HOOK_PRIVATE(hook); 539154862Sglebius negp neg; 540154862Sglebius 541172270Smav /* Skip any nonsession hook. */ 542172270Smav if (sp == NULL) 543154862Sglebius continue; 544154862Sglebius 545154862Sglebius /* Skip any sessions which are not in LISTEN mode. */ 546154862Sglebius if (sp->state != PPPOE_LISTENING) 547154862Sglebius continue; 548154862Sglebius 549154862Sglebius neg = sp->neg; 550154862Sglebius 551154862Sglebius if (neg->service_len == svc_len && 552174931Smav strncmp(svc_name, neg->service.data, svc_len) == 0) 553154862Sglebius return (hook); 554154862Sglebius } 555154862Sglebius 556154862Sglebius return (NULL); 557154862Sglebius} 558154862Sglebius 55952419Sjulian/************************************************************************** 560175865Smav * Routines to find a particular session that matches an incoming packet. * 56152419Sjulian **************************************************************************/ 562175865Smav/* Add specified session to hash. */ 563175865Smavstatic void 564175865Smavpppoe_addsession(sessp sp) 56552419Sjulian{ 566175865Smav const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(sp->hook)); 567175865Smav uint16_t hash = SESSHASH(sp->Session_ID); 56852419Sjulian 569175865Smav mtx_lock(&privp->sesshash[hash].mtx); 570175865Smav TAILQ_INSERT_HEAD(&privp->sesshash[hash].head, sp, sessions); 571175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 572175865Smav} 573172270Smav 574175865Smav/* Delete specified session from hash. */ 575175865Smavstatic void 576175865Smavpppoe_delsession(sessp sp) 577175865Smav{ 578175865Smav const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(sp->hook)); 579175865Smav uint16_t hash = SESSHASH(sp->Session_ID); 580175865Smav 581175865Smav mtx_lock(&privp->sesshash[hash].mtx); 582175865Smav TAILQ_REMOVE(&privp->sesshash[hash].head, sp, sessions); 583175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 584175865Smav} 585175865Smav 586175865Smav/* Find matching peer/session combination. */ 587175865Smavstatic sessp 588175865Smavpppoe_findsession(priv_p privp, const struct pppoe_full_hdr *wh) 589175865Smav{ 590175865Smav uint16_t session = ntohs(wh->ph.sid); 591175865Smav uint16_t hash = SESSHASH(session); 592175865Smav sessp sp = NULL; 593175865Smav 594175865Smav mtx_lock(&privp->sesshash[hash].mtx); 595175865Smav TAILQ_FOREACH(sp, &privp->sesshash[hash].head, sessions) { 596172270Smav if (sp->Session_ID == session && 597172270Smav bcmp(sp->pkt_hdr.eh.ether_dhost, 598172270Smav wh->eh.ether_shost, ETHER_ADDR_LEN) == 0) { 59952419Sjulian break; 60052419Sjulian } 60152419Sjulian } 602175865Smav mtx_unlock(&privp->sesshash[hash].mtx); 603175867Smav CTR3(KTR_NET, "%20s: matched %p for %d", __func__, sp?sp->hook:NULL, 604175867Smav session); 605154604Sglebius 606175865Smav return (sp); 60752419Sjulian} 60852419Sjulian 60952419Sjulianstatic hook_p 61097897Sarchiepppoe_finduniq(node_p node, const struct pppoe_tag *tag) 61152419Sjulian{ 612154604Sglebius hook_p hook = NULL; 613154604Sglebius union uniq uniq; 61452419Sjulian 61552419Sjulian bcopy(tag->tag_data, uniq.bytes, sizeof(void *)); 616154604Sglebius /* Cycle through all known hooks. */ 61770784Sjulian LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 618172270Smav /* Skip any nonsession hook. */ 619172270Smav if (NG_HOOK_PRIVATE(hook) == NULL) 62052419Sjulian continue; 62170784Sjulian if (uniq.pointer == NG_HOOK_PRIVATE(hook)) 62252419Sjulian break; 62352419Sjulian } 624154604Sglebius CTR3(KTR_NET, "%20s: matched %p for %p", __func__, hook, uniq.pointer); 625154604Sglebius 62652419Sjulian return (hook); 62752419Sjulian} 62852419Sjulian 62952419Sjulian/************************************************************************** 630154604Sglebius * Start of Netgraph entrypoints. * 63152419Sjulian **************************************************************************/ 63252419Sjulian 63352419Sjulian/* 634154604Sglebius * Allocate the private data structure and link it with node. 63552419Sjulian */ 63652419Sjulianstatic int 63770700Sjulianng_pppoe_constructor(node_p node) 63852419Sjulian{ 639175865Smav priv_p privp; 640175865Smav int i; 64152419Sjulian 642154604Sglebius /* Initialize private descriptor. */ 643154604Sglebius privp = malloc(sizeof(*privp), M_NETGRAPH_PPPOE, M_NOWAIT | M_ZERO); 644154604Sglebius if (privp == NULL) 64552419Sjulian return (ENOMEM); 64652419Sjulian 647154604Sglebius /* Link structs together; this counts as our one reference to *node. */ 648154604Sglebius NG_NODE_SET_PRIVATE(node, privp); 649154604Sglebius privp->node = node; 650132703Sglebius 651154901Sglebius /* Initialize to standard mode. */ 652161117Sglebius memset(&privp->eh.ether_dhost, 0xff, ETHER_ADDR_LEN); 653161117Sglebius privp->eh.ether_type = ETHERTYPE_PPPOE_DISC; 654154604Sglebius 655175865Smav for (i = 0; i < SESSHASHSIZE; i++) { 656175865Smav mtx_init(&privp->sesshash[i].mtx, "PPPoE hash mutex", NULL, MTX_DEF); 657175865Smav TAILQ_INIT(&privp->sesshash[i].head); 658175865Smav } 659175865Smav 660154604Sglebius CTR3(KTR_NET, "%20s: created node [%x] (%p)", 661154604Sglebius __func__, node->nd_ID, node); 662154604Sglebius 66352419Sjulian return (0); 66452419Sjulian} 66552419Sjulian 66652419Sjulian/* 66752419Sjulian * Give our ok for a hook to be added... 66852419Sjulian * point the hook's private info to the hook structure. 66952419Sjulian * 67052419Sjulian * The following hook names are special: 671154604Sglebius * "ethernet": the hook that should be connected to a NIC. 672154604Sglebius * "debug": copies of data sent out here (when I write the code). 67369922Sjulian * All other hook names need only be unique. (the framework checks this). 67452419Sjulian */ 67552419Sjulianstatic int 67652562Sjulianng_pppoe_newhook(node_p node, hook_p hook, const char *name) 67752419Sjulian{ 67870784Sjulian const priv_p privp = NG_NODE_PRIVATE(node); 67952419Sjulian sessp sp; 68052419Sjulian 68152419Sjulian if (strcmp(name, NG_PPPOE_HOOK_ETHERNET) == 0) { 68252419Sjulian privp->ethernet_hook = hook; 683172629Smav NG_HOOK_SET_RCVDATA(hook, ng_pppoe_rcvdata_ether); 68452419Sjulian } else if (strcmp(name, NG_PPPOE_HOOK_DEBUG) == 0) { 68552419Sjulian privp->debug_hook = hook; 686172629Smav NG_HOOK_SET_RCVDATA(hook, ng_pppoe_rcvdata_debug); 68752419Sjulian } else { 68852419Sjulian /* 68952419Sjulian * Any other unique name is OK. 69052419Sjulian * The infrastructure has already checked that it's unique, 69152419Sjulian * so just allocate it and hook it in. 69252419Sjulian */ 693154604Sglebius sp = malloc(sizeof(*sp), M_NETGRAPH_PPPOE, M_NOWAIT | M_ZERO); 694154604Sglebius if (sp == NULL) 695154604Sglebius return (ENOMEM); 69652419Sjulian 69770784Sjulian NG_HOOK_SET_PRIVATE(hook, sp); 69852419Sjulian sp->hook = hook; 69952419Sjulian } 700154604Sglebius CTR5(KTR_NET, "%20s: node [%x] (%p) connected hook %s (%p)", 701154604Sglebius __func__, node->nd_ID, node, name, hook); 702154604Sglebius 70352419Sjulian return(0); 70452419Sjulian} 70552419Sjulian 70652419Sjulian/* 707161117Sglebius * Hook has been added successfully. Request the MAC address of 708161117Sglebius * the underlying Ethernet node. 709161117Sglebius */ 710161117Sglebiusstatic int 711161117Sglebiusng_pppoe_connect(hook_p hook) 712161117Sglebius{ 713161117Sglebius const priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 714161117Sglebius struct ng_mesg *msg; 715161181Sglebius int error; 716161117Sglebius 717161117Sglebius if (hook != privp->ethernet_hook) 718161117Sglebius return (0); 719161117Sglebius 720161117Sglebius /* 721161117Sglebius * If this is Ethernet hook, then request MAC address 722161117Sglebius * from our downstream. 723161117Sglebius */ 724161117Sglebius NG_MKMESSAGE(msg, NGM_ETHER_COOKIE, NGM_ETHER_GET_ENADDR, 0, M_NOWAIT); 725161117Sglebius if (msg == NULL) 726161117Sglebius return (ENOBUFS); 727161117Sglebius 728161117Sglebius /* 729161117Sglebius * Our hook and peer hook have HK_INVALID flag set, 730161117Sglebius * so we can't use NG_SEND_MSG_HOOK() macro here. 731161117Sglebius */ 732161117Sglebius NG_SEND_MSG_ID(error, privp->node, msg, 733161117Sglebius NG_NODE_ID(NG_PEER_NODE(privp->ethernet_hook)), 734161117Sglebius NG_NODE_ID(privp->node)); 735161117Sglebius 736161117Sglebius return (error); 737161117Sglebius} 738161117Sglebius/* 73952419Sjulian * Get a netgraph control message. 74052419Sjulian * Check it is one we understand. If needed, send a response. 74152419Sjulian * We sometimes save the address for an async action later. 74252419Sjulian * Always free the message. 74352419Sjulian */ 74452419Sjulianstatic int 74570700Sjulianng_pppoe_rcvmsg(node_p node, item_p item, hook_p lasthook) 74652419Sjulian{ 74770784Sjulian priv_p privp = NG_NODE_PRIVATE(node); 74852562Sjulian struct ngpppoe_init_data *ourmsg = NULL; 74952419Sjulian struct ng_mesg *resp = NULL; 75052419Sjulian int error = 0; 75152419Sjulian hook_p hook = NULL; 75252419Sjulian sessp sp = NULL; 75352419Sjulian negp neg = NULL; 75470700Sjulian struct ng_mesg *msg; 75552419Sjulian 75670700Sjulian NGI_GET_MSG(item, msg); 757154604Sglebius CTR5(KTR_NET, "%20s: node [%x] (%p) got message %d with cookie %d", 758154604Sglebius __func__, node->nd_ID, node, msg->header.cmd, 759154604Sglebius msg->header.typecookie); 760154604Sglebius 761154604Sglebius /* Deal with message according to cookie and command. */ 76252419Sjulian switch (msg->header.typecookie) { 763154604Sglebius case NGM_PPPOE_COOKIE: 76452419Sjulian switch (msg->header.cmd) { 76552419Sjulian case NGM_PPPOE_CONNECT: 766154604Sglebius case NGM_PPPOE_LISTEN: 767154604Sglebius case NGM_PPPOE_OFFER: 768154604Sglebius case NGM_PPPOE_SERVICE: 76968845Sbrian ourmsg = (struct ngpppoe_init_data *)msg->data; 77068845Sbrian if (msg->header.arglen < sizeof(*ourmsg)) { 771161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: init data too " 772161034Sglebius "small\n", node->nd_ID); 77368845Sbrian LEAVE(EMSGSIZE); 77468031Sbrian } 775154604Sglebius if (msg->header.arglen - sizeof(*ourmsg) > 77668031Sbrian PPPOE_SERVICE_NAME_SIZE) { 777161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: service name " 778161034Sglebius "too big\n", node->nd_ID); 77952419Sjulian LEAVE(EMSGSIZE); 78052419Sjulian } 78168845Sbrian if (msg->header.arglen - sizeof(*ourmsg) < 78268845Sbrian ourmsg->data_len) { 783161034Sglebius log(LOG_ERR, "ng_pppoe[%x]: init data has bad " 784161034Sglebius "length, %d should be %zd\n", node->nd_ID, 785161034Sglebius ourmsg->data_len, 78668845Sbrian msg->header.arglen - sizeof (*ourmsg)); 78752419Sjulian LEAVE(EMSGSIZE); 78852419Sjulian } 78968031Sbrian 790154604Sglebius /* Make sure strcmp will terminate safely. */ 79152419Sjulian ourmsg->hook[sizeof(ourmsg->hook) - 1] = '\0'; 79252419Sjulian 793154604Sglebius /* Cycle through all known hooks. */ 79470784Sjulian LIST_FOREACH(hook, &node->nd_hooks, hk_hooks) { 795154604Sglebius if (NG_HOOK_NAME(hook) && 796154604Sglebius strcmp(NG_HOOK_NAME(hook), ourmsg->hook) == 797154604Sglebius 0) 79852419Sjulian break; 79952419Sjulian } 800154604Sglebius if (hook == NULL) 80152419Sjulian LEAVE(ENOENT); 802154604Sglebius 803172270Smav sp = NG_HOOK_PRIVATE(hook); 804172270Smav 805172270Smav if (sp == NULL) 80652419Sjulian LEAVE(EINVAL); 807154604Sglebius 80880311Sbrian if (msg->header.cmd == NGM_PPPOE_LISTEN) { 80980311Sbrian /* 81080311Sbrian * Ensure we aren't already listening for this 81180311Sbrian * service. 81280311Sbrian */ 813154862Sglebius if (pppoe_find_svc(node, ourmsg->data, 814154862Sglebius ourmsg->data_len) != NULL) 81580311Sbrian LEAVE(EEXIST); 81680311Sbrian } 81780311Sbrian 81869922Sjulian /* 81969922Sjulian * PPPOE_SERVICE advertisments are set up 82069922Sjulian * on sessions that are in PRIMED state. 82169922Sjulian */ 822154604Sglebius if (msg->header.cmd == NGM_PPPOE_SERVICE) 82369922Sjulian break; 824154604Sglebius 825150319Sglebius if (sp->state != PPPOE_SNONE) { 826161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: Session already " 827161034Sglebius "active\n", node->nd_ID); 82852419Sjulian LEAVE(EISCONN); 82952419Sjulian } 83052443Sjulian 83152419Sjulian /* 832154604Sglebius * Set up prototype header. 83352419Sjulian */ 834154604Sglebius neg = malloc(sizeof(*neg), M_NETGRAPH_PPPOE, 83568876Sdwmalone M_NOWAIT | M_ZERO); 83652419Sjulian 837154604Sglebius if (neg == NULL) 83852419Sjulian LEAVE(ENOMEM); 839154604Sglebius 840154604Sglebius neg->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 841154604Sglebius if (neg->m == NULL) { 842154604Sglebius free(neg, M_NETGRAPH_PPPOE); 84352419Sjulian LEAVE(ENOBUFS); 84452419Sjulian } 84552419Sjulian neg->m->m_pkthdr.rcvif = NULL; 84652419Sjulian sp->neg = neg; 847138562Sglebius ng_callout_init(&neg->handle); 84852419Sjulian neg->m->m_len = sizeof(struct pppoe_full_hdr); 84952419Sjulian neg->pkt = mtod(neg->m, union packet*); 850132703Sglebius memcpy((void *)&neg->pkt->pkt_header.eh, 851161117Sglebius &privp->eh, sizeof(struct ether_header)); 85252419Sjulian neg->pkt->pkt_header.ph.ver = 0x1; 85352419Sjulian neg->pkt->pkt_header.ph.type = 0x1; 85452419Sjulian neg->pkt->pkt_header.ph.sid = 0x0000; 85552419Sjulian neg->timeout = 0; 85652419Sjulian 85770700Sjulian sp->creator = NGI_RETADDR(item); 85852419Sjulian } 85952419Sjulian switch (msg->header.cmd) { 86052419Sjulian case NGM_PPPOE_GET_STATUS: 86152419Sjulian { 86252562Sjulian struct ngpppoestat *stats; 86352419Sjulian 86452419Sjulian NG_MKRESPONSE(resp, msg, sizeof(*stats), M_NOWAIT); 865154604Sglebius if (!resp) 86652419Sjulian LEAVE(ENOMEM); 867154604Sglebius 86852562Sjulian stats = (struct ngpppoestat *) resp->data; 86952419Sjulian stats->packets_in = privp->packets_in; 87052419Sjulian stats->packets_out = privp->packets_out; 87152419Sjulian break; 87252419Sjulian } 87352419Sjulian case NGM_PPPOE_CONNECT: 874174981Smav { 87552419Sjulian /* 87652419Sjulian * Check the hook exists and is Uninitialised. 87752419Sjulian * Send a PADI request, and start the timeout logic. 87852419Sjulian * Store the originator of this message so we can send 87952419Sjulian * a success of fail message to them later. 880154604Sglebius * Move the session to SINIT. 88152419Sjulian * Set up the session to the correct state and 88252419Sjulian * start it. 88352419Sjulian */ 884174981Smav int i, acnlen = 0, acnsep = 0, srvlen; 885174981Smav for (i = 0; i < ourmsg->data_len; i++) { 886174981Smav if (ourmsg->data[i] == '\\') { 887174981Smav acnlen = i; 888174981Smav acnsep = 1; 889174981Smav break; 890174981Smav } 891174981Smav } 892174981Smav srvlen = ourmsg->data_len - acnlen - acnsep; 893174981Smav 894174981Smav bcopy(ourmsg->data, neg->ac_name.data, acnlen); 895174981Smav neg->ac_name_len = acnlen; 896174981Smav 89752419Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 898174981Smav neg->service.hdr.tag_len = htons((uint16_t)srvlen); 899174981Smav bcopy(ourmsg->data + acnlen + acnsep, 900174981Smav neg->service.data, srvlen); 901174981Smav neg->service_len = srvlen; 90252419Sjulian pppoe_start(sp); 90352419Sjulian break; 904174981Smav } 90552419Sjulian case NGM_PPPOE_LISTEN: 90652419Sjulian /* 90752419Sjulian * Check the hook exists and is Uninitialised. 90852419Sjulian * Install the service matching string. 90952419Sjulian * Store the originator of this message so we can send 91052419Sjulian * a success of fail message to them later. 91152419Sjulian * Move the hook to 'LISTENING' 91252419Sjulian */ 91352419Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 91468845Sbrian neg->service.hdr.tag_len = 915154604Sglebius htons((uint16_t)ourmsg->data_len); 91652443Sjulian 91768845Sbrian if (ourmsg->data_len) 91868845Sbrian bcopy(ourmsg->data, neg->service.data, 91968845Sbrian ourmsg->data_len); 92068845Sbrian neg->service_len = ourmsg->data_len; 92152419Sjulian neg->pkt->pkt_header.ph.code = PADT_CODE; 92252419Sjulian /* 923154604Sglebius * Wait for PADI packet coming from Ethernet. 92452419Sjulian */ 92552419Sjulian sp->state = PPPOE_LISTENING; 92652419Sjulian break; 92752419Sjulian case NGM_PPPOE_OFFER: 92852419Sjulian /* 92952419Sjulian * Check the hook exists and is Uninitialised. 93052419Sjulian * Store the originator of this message so we can send 93152419Sjulian * a success of fail message to them later. 93252419Sjulian * Store the AC-Name given and go to PRIMED. 93352419Sjulian */ 93452419Sjulian neg->ac_name.hdr.tag_type = PTT_AC_NAME; 93568845Sbrian neg->ac_name.hdr.tag_len = 936154604Sglebius htons((uint16_t)ourmsg->data_len); 93768845Sbrian if (ourmsg->data_len) 93868845Sbrian bcopy(ourmsg->data, neg->ac_name.data, 93968845Sbrian ourmsg->data_len); 94068845Sbrian neg->ac_name_len = ourmsg->data_len; 94152419Sjulian neg->pkt->pkt_header.ph.code = PADO_CODE; 94252419Sjulian /* 943154604Sglebius * Wait for PADI packet coming from hook. 94452419Sjulian */ 94552419Sjulian sp->state = PPPOE_PRIMED; 94652419Sjulian break; 947154604Sglebius case NGM_PPPOE_SERVICE: 948154604Sglebius /* 94969922Sjulian * Check the session is primed. 95069922Sjulian * for now just allow ONE service to be advertised. 95169922Sjulian * If you do it twice you just overwrite. 95269922Sjulian */ 95370148Sjulian if (sp->state != PPPOE_PRIMED) { 954161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: session not " 955161034Sglebius "primed\n", node->nd_ID); 95669922Sjulian LEAVE(EISCONN); 95769922Sjulian } 95870931Sjulian neg = sp->neg; 95969922Sjulian neg->service.hdr.tag_type = PTT_SRV_NAME; 96069922Sjulian neg->service.hdr.tag_len = 961154604Sglebius htons((uint16_t)ourmsg->data_len); 96269922Sjulian 96369922Sjulian if (ourmsg->data_len) 96469922Sjulian bcopy(ourmsg->data, neg->service.data, 96569922Sjulian ourmsg->data_len); 96669922Sjulian neg->service_len = ourmsg->data_len; 96769922Sjulian break; 968132703Sglebius case NGM_PPPOE_SETMODE: 969132703Sglebius { 970132703Sglebius char *s; 971132703Sglebius size_t len; 972132703Sglebius 973132703Sglebius if (msg->header.arglen == 0) 974132703Sglebius LEAVE(EINVAL); 975132703Sglebius 976132703Sglebius s = (char *)msg->data; 977132703Sglebius len = msg->header.arglen - 1; 978132703Sglebius 979154604Sglebius /* Search for matching mode string. */ 980154901Sglebius if (len == strlen(NG_PPPOE_STANDARD) && 981154901Sglebius (strncmp(NG_PPPOE_STANDARD, s, len) == 0)) { 982154901Sglebius privp->flags = 0; 983161117Sglebius privp->eh.ether_type = ETHERTYPE_PPPOE_DISC; 984154901Sglebius break; 985154901Sglebius } 986154901Sglebius if (len == strlen(NG_PPPOE_3COM) && 987154901Sglebius (strncmp(NG_PPPOE_3COM, s, len) == 0)) { 988154901Sglebius privp->flags |= COMPAT_3COM; 989161117Sglebius privp->eh.ether_type = 990161117Sglebius ETHERTYPE_PPPOE_3COM_DISC; 991154901Sglebius break; 992154901Sglebius } 993154901Sglebius if (len == strlen(NG_PPPOE_DLINK) && 994154901Sglebius (strncmp(NG_PPPOE_DLINK, s, len) == 0)) { 995154901Sglebius privp->flags |= COMPAT_DLINK; 996154901Sglebius break; 997154901Sglebius } 998154901Sglebius error = EINVAL; 999132703Sglebius break; 1000132703Sglebius } 1001132703Sglebius case NGM_PPPOE_GETMODE: 1002154901Sglebius { 1003154901Sglebius char *s; 1004154901Sglebius size_t len = 0; 1005154901Sglebius 1006154901Sglebius if (privp->flags == 0) 1007154901Sglebius len += strlen(NG_PPPOE_STANDARD) + 1; 1008154901Sglebius if (privp->flags & COMPAT_3COM) 1009154901Sglebius len += strlen(NG_PPPOE_3COM) + 1; 1010154901Sglebius if (privp->flags & COMPAT_DLINK) 1011154901Sglebius len += strlen(NG_PPPOE_DLINK) + 1; 1012154901Sglebius 1013154901Sglebius NG_MKRESPONSE(resp, msg, len, M_NOWAIT); 1014132703Sglebius if (resp == NULL) 1015132703Sglebius LEAVE(ENOMEM); 1016154901Sglebius 1017154901Sglebius s = (char *)resp->data; 1018154901Sglebius if (privp->flags == 0) { 1019154901Sglebius len = strlen(NG_PPPOE_STANDARD); 1020154901Sglebius strlcpy(s, NG_PPPOE_STANDARD, len + 1); 1021154901Sglebius break; 1022154901Sglebius } 1023154901Sglebius if (privp->flags & COMPAT_3COM) { 1024154901Sglebius len = strlen(NG_PPPOE_3COM); 1025154901Sglebius strlcpy(s, NG_PPPOE_3COM, len + 1); 1026154901Sglebius s += len; 1027154901Sglebius } 1028154901Sglebius if (privp->flags & COMPAT_DLINK) { 1029154901Sglebius if (s != resp->data) 1030154901Sglebius *s++ = '|'; 1031154901Sglebius len = strlen(NG_PPPOE_DLINK); 1032154901Sglebius strlcpy(s, NG_PPPOE_DLINK, len + 1); 1033154901Sglebius } 1034132703Sglebius break; 1035154901Sglebius } 1036161117Sglebius case NGM_PPPOE_SETENADDR: 1037161117Sglebius if (msg->header.arglen != ETHER_ADDR_LEN) 1038161117Sglebius LEAVE(EINVAL); 1039161117Sglebius bcopy(msg->data, &privp->eh.ether_shost, 1040161117Sglebius ETHER_ADDR_LEN); 1041161117Sglebius break; 104252419Sjulian default: 104352419Sjulian LEAVE(EINVAL); 104452419Sjulian } 104552419Sjulian break; 1046161117Sglebius case NGM_ETHER_COOKIE: 1047161117Sglebius if (!(msg->header.flags & NGF_RESP)) 1048161117Sglebius LEAVE(EINVAL); 1049161117Sglebius switch (msg->header.cmd) { 1050161117Sglebius case NGM_ETHER_GET_ENADDR: 1051161117Sglebius if (msg->header.arglen != ETHER_ADDR_LEN) 1052161117Sglebius LEAVE(EINVAL); 1053161117Sglebius bcopy(msg->data, &privp->eh.ether_shost, 1054161117Sglebius ETHER_ADDR_LEN); 1055161117Sglebius break; 1056161117Sglebius default: 1057161181Sglebius LEAVE(EINVAL); 1058161117Sglebius } 1059161117Sglebius break; 106052419Sjulian default: 106152419Sjulian LEAVE(EINVAL); 106252419Sjulian } 106352419Sjulian 1064154604Sglebius /* Take care of synchronous response, if any. */ 106570700Sjulianquit: 1066154901Sglebius CTR2(KTR_NET, "%20s: returning %d", __func__, error); 106770700Sjulian NG_RESPOND_MSG(error, node, item, resp); 1068154604Sglebius /* Free the message and return. */ 106970700Sjulian NG_FREE_MSG(msg); 107052419Sjulian return(error); 107152419Sjulian} 107252419Sjulian 107352443Sjulian/* 107452443Sjulian * Start a client into the first state. A separate function because 107552443Sjulian * it can be needed if the negotiation times out. 107652443Sjulian */ 107752419Sjulianstatic void 107852419Sjulianpppoe_start(sessp sp) 107952419Sjulian{ 1080172628Smav hook_p hook = sp->hook; 1081172628Smav node_p node = NG_HOOK_NODE(hook); 1082172628Smav priv_p privp = NG_NODE_PRIVATE(node); 1083172628Smav negp neg = sp->neg; 108452419Sjulian struct { 108552419Sjulian struct pppoe_tag hdr; 108652419Sjulian union uniq data; 1087103870Salfred } __packed uniqtag; 1088172628Smav struct mbuf *m0; 1089172628Smav int error; 109052419Sjulian 1091154604Sglebius /* 1092154604Sglebius * Kick the state machine into starting up. 109352419Sjulian */ 1094154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 109552419Sjulian sp->state = PPPOE_SINIT; 1096154604Sglebius /* 1097154604Sglebius * Reset the packet header to broadcast. Since we are 1098161117Sglebius * in a client mode use configured ethertype. 1099154604Sglebius */ 1100172628Smav memcpy((void *)&neg->pkt->pkt_header.eh, &privp->eh, 1101161117Sglebius sizeof(struct ether_header)); 1102172628Smav neg->pkt->pkt_header.ph.code = PADI_CODE; 110352419Sjulian uniqtag.hdr.tag_type = PTT_HOST_UNIQ; 110452419Sjulian uniqtag.hdr.tag_len = htons((u_int16_t)sizeof(uniqtag.data)); 110552419Sjulian uniqtag.data.pointer = sp; 110652419Sjulian init_tags(sp); 110768079Sjulian insert_tag(sp, &uniqtag.hdr); 1108172628Smav insert_tag(sp, &neg->service.hdr); 110952419Sjulian make_packet(sp); 1110172628Smav /* 1111172628Smav * Send packet and prepare to retransmit it after timeout. 1112172628Smav */ 1113172628Smav ng_callout(&neg->handle, node, hook, PPPOE_INITIAL_TIMEOUT * hz, 1114172628Smav pppoe_ticker, NULL, 0); 1115172628Smav neg->timeout = PPPOE_INITIAL_TIMEOUT * 2; 1116172628Smav m0 = m_copypacket(neg->m, M_DONTWAIT); 1117172628Smav NG_SEND_DATA_ONLY(error, privp->ethernet_hook, m0); 111852419Sjulian} 111952419Sjulian 112090973Sbrianstatic int 112197897Sarchiesend_acname(sessp sp, const struct pppoe_tag *tag) 112290973Sbrian{ 112398636Sbrian int error, tlen; 112490973Sbrian struct ng_mesg *msg; 112590973Sbrian struct ngpppoe_sts *sts; 112690973Sbrian 1127154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1128154604Sglebius 112990973Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, NGM_PPPOE_ACNAME, 113090973Sbrian sizeof(struct ngpppoe_sts), M_NOWAIT); 113190973Sbrian if (msg == NULL) 113290973Sbrian return (ENOMEM); 113390973Sbrian 113490973Sbrian sts = (struct ngpppoe_sts *)msg->data; 1135125028Sharti tlen = min(NG_HOOKSIZ - 1, ntohs(tag->tag_len)); 113698636Sbrian strncpy(sts->hook, tag->tag_data, tlen); 113798636Sbrian sts->hook[tlen] = '\0'; 1138102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 113990973Sbrian 114090973Sbrian return (error); 114190973Sbrian} 114290973Sbrian 114396578Sbrianstatic int 114496578Sbriansend_sessionid(sessp sp) 114596578Sbrian{ 114696578Sbrian int error; 114796578Sbrian struct ng_mesg *msg; 114896578Sbrian 1149154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1150154604Sglebius 115196578Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, NGM_PPPOE_SESSIONID, 1152154604Sglebius sizeof(uint16_t), M_NOWAIT); 115396578Sbrian if (msg == NULL) 115496578Sbrian return (ENOMEM); 115596578Sbrian 1156154604Sglebius *(uint16_t *)msg->data = sp->Session_ID; 1157102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 115896578Sbrian 115996578Sbrian return (error); 116096578Sbrian} 116196578Sbrian 116252419Sjulian/* 1163172629Smav * Receive data from session hook and do something with it. 116452419Sjulian */ 116552419Sjulianstatic int 116670700Sjulianng_pppoe_rcvdata(hook_p hook, item_p item) 116752419Sjulian{ 116870784Sjulian node_p node = NG_HOOK_NODE(hook); 116970784Sjulian const priv_p privp = NG_NODE_PRIVATE(node); 117070784Sjulian sessp sp = NG_HOOK_PRIVATE(hook); 1171172629Smav struct pppoe_full_hdr *wh; 1172154604Sglebius struct mbuf *m; 1173172629Smav int error; 117452419Sjulian 1175154604Sglebius CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1176154604Sglebius __func__, node->nd_ID, node, item, hook->hk_name, hook); 1177154604Sglebius 117870700Sjulian NGI_GET_M(item, m); 1179172629Smav switch (sp->state) { 1180172629Smav case PPPOE_NEWCONNECTED: 1181172629Smav case PPPOE_CONNECTED: { 1182172629Smav static const u_char addrctrl[] = { 0xff, 0x03 }; 1183172629Smav 118452419Sjulian /* 1185172629Smav * Remove PPP address and control fields, if any. 1186172629Smav * For example, ng_ppp(4) always sends LCP packets 1187172629Smav * with address and control fields as required by 1188172629Smav * generic PPP. PPPoE is an exception to the rule. 118952419Sjulian */ 1190172629Smav if (m->m_pkthdr.len >= 2) { 1191172629Smav if (m->m_len < 2 && !(m = m_pullup(m, 2))) 1192172629Smav LEAVE(ENOBUFS); 1193172629Smav if (bcmp(mtod(m, u_char *), addrctrl, 2) == 0) 1194172629Smav m_adj(m, 2); 1195172629Smav } 119652419Sjulian /* 1197172629Smav * Bang in a pre-made header, and set the length up 1198172629Smav * to be correct. Then send it to the ethernet driver. 119952419Sjulian */ 1200172629Smav M_PREPEND(m, sizeof(*wh), M_DONTWAIT); 1201172629Smav if (m == NULL) 1202172629Smav LEAVE(ENOBUFS); 1203172629Smav 1204172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1205172629Smav bcopy(&sp->pkt_hdr, wh, sizeof(*wh)); 1206172629Smav wh->ph.length = htons(m->m_pkthdr.len - sizeof(*wh)); 1207172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m); 1208172629Smav privp->packets_out++; 1209172629Smav break; 1210172629Smav } 1211172629Smav case PPPOE_PRIMED: { 1212172629Smav struct { 1213172629Smav struct pppoe_tag hdr; 1214172629Smav union uniq data; 1215172629Smav } __packed uniqtag; 1216172629Smav const struct pppoe_tag *tag; 1217172629Smav struct mbuf *m0; 1218172629Smav const struct pppoe_hdr *ph; 1219172629Smav negp neg = sp->neg; 1220172629Smav uint16_t session; 1221172629Smav uint16_t length; 1222172629Smav uint8_t code; 1223172629Smav 1224172629Smav /* 1225172629Smav * A PADI packet is being returned by the application 1226172629Smav * that has set up this hook. This indicates that it 1227172629Smav * wants us to offer service. 1228172629Smav */ 1229172629Smav if (m->m_len < sizeof(*wh)) { 1230172629Smav m = m_pullup(m, sizeof(*wh)); 1231172629Smav if (m == NULL) 123252510Sjulian LEAVE(ENOBUFS); 123352419Sjulian } 123452419Sjulian wh = mtod(m, struct pppoe_full_hdr *); 1235172629Smav ph = &wh->ph; 1236172629Smav session = ntohs(wh->ph.sid); 123752419Sjulian length = ntohs(wh->ph.length); 1238172629Smav code = wh->ph.code; 1239172629Smav /* Use peers mode in session. */ 1240172629Smav neg->pkt->pkt_header.eh.ether_type = wh->eh.ether_type; 1241172629Smav if (code != PADI_CODE) 1242172629Smav LEAVE(EINVAL); 1243172629Smav ng_uncallout(&neg->handle, node); 124452419Sjulian 1245172629Smav /* 1246172629Smav * This is the first time we hear 1247172629Smav * from the client, so note it's 1248172629Smav * unicast address, replacing the 1249172629Smav * broadcast address. 1250172629Smav */ 1251172629Smav bcopy(wh->eh.ether_shost, 1252172629Smav neg->pkt->pkt_header.eh.ether_dhost, 1253172629Smav ETHER_ADDR_LEN); 1254172629Smav sp->state = PPPOE_SOFFER; 1255172629Smav neg->timeout = 0; 1256172629Smav neg->pkt->pkt_header.ph.code = PADO_CODE; 1257154862Sglebius 1258172629Smav /* 1259172629Smav * Start working out the tags to respond with. 1260172629Smav */ 1261172629Smav uniqtag.hdr.tag_type = PTT_AC_COOKIE; 1262172629Smav uniqtag.hdr.tag_len = htons((u_int16_t)sizeof(sp)); 1263172629Smav uniqtag.data.pointer = sp; 1264172629Smav init_tags(sp); 1265172629Smav insert_tag(sp, &neg->ac_name.hdr); /* AC_NAME */ 1266172629Smav if ((tag = get_tag(ph, PTT_SRV_NAME))) 1267172629Smav insert_tag(sp, tag); /* return service */ 1268172629Smav /* 1269172629Smav * If we have a NULL service request 1270172629Smav * and have an extra service defined in this hook, 1271172629Smav * then also add a tag for the extra service. 1272172629Smav * XXX this is a hack. eventually we should be able 1273172629Smav * to support advertising many services, not just one 1274172629Smav */ 1275172629Smav if (((tag == NULL) || (tag->tag_len == 0)) && 1276172629Smav (neg->service.hdr.tag_len != 0)) { 1277172629Smav insert_tag(sp, &neg->service.hdr); /* SERVICE */ 1278172629Smav } 1279172629Smav if ((tag = get_tag(ph, PTT_HOST_UNIQ))) 1280172629Smav insert_tag(sp, tag); /* returned hostunique */ 1281172629Smav insert_tag(sp, &uniqtag.hdr); 1282172629Smav scan_tags(sp, ph); 1283172629Smav make_packet(sp); 1284172629Smav /* 1285172629Smav * Send the offer but if they don't respond 1286172629Smav * in PPPOE_OFFER_TIMEOUT seconds, forget about it. 1287172629Smav */ 1288172629Smav ng_callout(&neg->handle, node, hook, PPPOE_OFFER_TIMEOUT * hz, 1289172629Smav pppoe_ticker, NULL, 0); 1290172629Smav m0 = m_copypacket(sp->neg->m, M_DONTWAIT); 1291172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1292172629Smav privp->packets_out++; 1293172629Smav break; 1294172629Smav } 129552419Sjulian 1296172629Smav /* 1297172629Smav * Packets coming from the hook make no sense 1298172629Smav * to sessions in the rest of states. Throw them away. 1299172629Smav */ 1300172629Smav default: 1301172629Smav LEAVE(ENETUNREACH); 1302172629Smav } 1303172629Smavquit: 1304172629Smav if (item) 1305172629Smav NG_FREE_ITEM(item); 1306172629Smav NG_FREE_M(m); 1307172629Smav return (error); 1308172629Smav} 130952419Sjulian 1310172629Smav/* 1311172629Smav * Receive data from ether and do something with it. 1312172629Smav */ 1313172629Smavstatic int 1314172629Smavng_pppoe_rcvdata_ether(hook_p hook, item_p item) 1315172629Smav{ 1316172629Smav node_p node = NG_HOOK_NODE(hook); 1317172629Smav const priv_p privp = NG_NODE_PRIVATE(node); 1318172629Smav sessp sp = NG_HOOK_PRIVATE(hook); 1319172629Smav const struct pppoe_tag *utag = NULL, *tag = NULL; 1320172629Smav const struct pppoe_full_hdr *wh; 1321172629Smav const struct pppoe_hdr *ph; 1322172629Smav negp neg = NULL; 1323172629Smav struct mbuf *m; 1324172629Smav hook_p sendhook; 1325172629Smav int error = 0; 1326172629Smav uint16_t session; 1327172629Smav uint16_t length; 1328172629Smav uint8_t code; 1329172629Smav struct mbuf *m0; 133052419Sjulian 1331172629Smav CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1332172629Smav __func__, node->nd_ID, node, item, hook->hk_name, hook); 133352419Sjulian 1334172629Smav NGI_GET_M(item, m); 1335172629Smav /* 1336172629Smav * Dig out various fields from the packet. 1337172629Smav * Use them to decide where to send it. 1338172629Smav */ 1339172629Smav privp->packets_in++; 1340172629Smav if( m->m_len < sizeof(*wh)) { 1341172629Smav m = m_pullup(m, sizeof(*wh)); /* Checks length */ 1342172629Smav if (m == NULL) { 1343172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: couldn't " 1344172629Smav "m_pullup(wh)\n", node->nd_ID); 1345172629Smav LEAVE(ENOBUFS); 1346172629Smav } 1347172629Smav } 1348172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1349172629Smav length = ntohs(wh->ph.length); 1350172629Smav switch(wh->eh.ether_type) { 1351172629Smav case ETHERTYPE_PPPOE_3COM_DISC: /* fall through */ 1352172629Smav case ETHERTYPE_PPPOE_DISC: 1353172629Smav /* 1354172629Smav * We need to try to make sure that the tag area 1355172629Smav * is contiguous, or we could wander off the end 1356172629Smav * of a buffer and make a mess. 1357172629Smav * (Linux wouldn't have this problem). 1358172629Smav */ 1359172629Smav if (m->m_pkthdr.len <= MHLEN) { 1360172629Smav if( m->m_len < m->m_pkthdr.len) { 1361172629Smav m = m_pullup(m, m->m_pkthdr.len); 1362172629Smav if (m == NULL) { 1363172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: " 1364172629Smav "couldn't m_pullup(pkthdr)\n", 1365172629Smav node->nd_ID); 1366172629Smav LEAVE(ENOBUFS); 136752419Sjulian } 136852419Sjulian } 1369172629Smav } 1370172629Smav if (m->m_len != m->m_pkthdr.len) { 137152419Sjulian /* 1372172629Smav * It's not all in one piece. 1373172629Smav * We need to do extra work. 1374172629Smav * Put it into a cluster. 137552419Sjulian */ 1376172629Smav struct mbuf *n; 1377172629Smav n = m_dup(m, M_DONTWAIT); 1378172629Smav m_freem(m); 1379172629Smav m = n; 1380172629Smav if (m) { 1381172629Smav /* just check we got a cluster */ 1382172629Smav if (m->m_len != m->m_pkthdr.len) { 1383172629Smav m_freem(m); 1384172629Smav m = NULL; 1385172629Smav } 138652419Sjulian } 1387172629Smav if (m == NULL) { 1388172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: packet " 1389172629Smav "fragmented\n", node->nd_ID); 139052419Sjulian LEAVE(EMSGSIZE); 139152419Sjulian } 139252419Sjulian } 1393172629Smav wh = mtod(m, struct pppoe_full_hdr *); 1394172629Smav length = ntohs(wh->ph.length); 1395172629Smav ph = &wh->ph; 1396172629Smav session = ntohs(wh->ph.sid); 1397172629Smav code = wh->ph.code; 139864502Sarchie 1399172629Smav switch(code) { 1400172629Smav case PADI_CODE: 140152419Sjulian /* 1402172629Smav * We are a server: 1403172629Smav * Look for a hook with the required service and send 1404172629Smav * the ENTIRE packet up there. It should come back to 1405172629Smav * a new hook in PRIMED state. Look there for further 1406172629Smav * processing. 140764502Sarchie */ 1408172629Smav tag = get_tag(ph, PTT_SRV_NAME); 1409172629Smav if (tag == NULL) { 1410172629Smav CTR1(KTR_NET, "%20s: PADI w/o Service-Name", 1411172629Smav __func__); 1412172629Smav LEAVE(ENETUNREACH); 141364502Sarchie } 1414172629Smav 141564502Sarchie /* 1416172629Smav * First, try to match Service-Name against our 1417172629Smav * listening hooks. If no success and we are in D-Link 1418172629Smav * compat mode and Service-Name is empty, then we 1419172629Smav * broadcast the PADI to all listening hooks. 142052419Sjulian */ 1421172629Smav sendhook = pppoe_match_svc(node, tag); 1422172629Smav if (sendhook != NULL) 1423172629Smav NG_FWD_NEW_DATA(error, item, sendhook, m); 1424172629Smav else if (privp->flags & COMPAT_DLINK && 1425172629Smav ntohs(tag->tag_len) == 0) 1426172629Smav error = pppoe_broadcast_padi(node, m); 1427172629Smav else 1428172629Smav error = ENETUNREACH; 142952419Sjulian break; 1430172629Smav case PADO_CODE: 1431172629Smav /* 1432172629Smav * We are a client: 1433172629Smav * Use the host_uniq tag to find the hook this is in 1434172629Smav * response to. Received #2, now send #3 1435172629Smav * For now simply accept the first we receive. 1436172629Smav */ 1437172629Smav utag = get_tag(ph, PTT_HOST_UNIQ); 1438172629Smav if ((utag == NULL) || 1439172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1440172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: no host " 1441172629Smav "unique field\n", node->nd_ID); 1442172629Smav LEAVE(ENETUNREACH); 144352419Sjulian } 1444172629Smav 1445172629Smav sendhook = pppoe_finduniq(node, utag); 1446172629Smav if (sendhook == NULL) { 1447172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: no " 1448172629Smav "matching session\n", node->nd_ID); 1449172629Smav LEAVE(ENETUNREACH); 1450172629Smav } 1451172629Smav 145252419Sjulian /* 1453172629Smav * Check the session is in the right state. 1454172629Smav * It needs to be in PPPOE_SINIT. 145552419Sjulian */ 1456172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1457174981Smav if (sp->state == PPPOE_SREQ || 1458174981Smav sp->state == PPPOE_CONNECTED) { 1459174981Smav break; /* Multiple PADO is OK. */ 1460174981Smav } 1461172629Smav if (sp->state != PPPOE_SINIT) { 1462172629Smav log(LOG_NOTICE, "ng_pppoe[%x]: session " 1463172629Smav "in wrong state\n", node->nd_ID); 1464172629Smav LEAVE(ENETUNREACH); 1465172629Smav } 146652419Sjulian neg = sp->neg; 1467174981Smav /* If requested specific AC-name, check it. */ 1468174981Smav if (neg->ac_name_len) { 1469174981Smav tag = get_tag(ph, PTT_AC_NAME); 1470174981Smav if (!tag) { 1471174981Smav /* No PTT_AC_NAME in PADO */ 1472174981Smav break; 1473174981Smav } 1474174981Smav if (neg->ac_name_len != htons(tag->tag_len) || 1475174981Smav strncmp(neg->ac_name.data, tag->tag_data, 1476174981Smav neg->ac_name_len) != 0) { 1477174981Smav break; 1478174981Smav } 1479174981Smav } 1480174981Smav sp->state = PPPOE_SREQ; 1481138562Sglebius ng_uncallout(&neg->handle, node); 148252419Sjulian 148352419Sjulian /* 148452419Sjulian * This is the first time we hear 1485172629Smav * from the server, so note it's 148652419Sjulian * unicast address, replacing the 1487172629Smav * broadcast address . 148852419Sjulian */ 148952419Sjulian bcopy(wh->eh.ether_shost, 149052419Sjulian neg->pkt->pkt_header.eh.ether_dhost, 149152419Sjulian ETHER_ADDR_LEN); 149252419Sjulian neg->timeout = 0; 1493172629Smav neg->pkt->pkt_header.ph.code = PADR_CODE; 1494172629Smav init_tags(sp); 1495172629Smav insert_tag(sp, utag); /* Host Unique */ 1496172629Smav if ((tag = get_tag(ph, PTT_AC_COOKIE))) 1497172629Smav insert_tag(sp, tag); /* return cookie */ 1498172629Smav if ((tag = get_tag(ph, PTT_AC_NAME))) { 1499172629Smav insert_tag(sp, tag); /* return it */ 1500172629Smav send_acname(sp, tag); 1501172629Smav } 1502172629Smav insert_tag(sp, &neg->service.hdr); /* Service */ 1503172629Smav scan_tags(sp, ph); 1504172629Smav make_packet(sp); 1505172629Smav sp->state = PPPOE_SREQ; 1506172629Smav ng_callout(&neg->handle, node, sp->hook, 1507172629Smav PPPOE_INITIAL_TIMEOUT * hz, 1508172629Smav pppoe_ticker, NULL, 0); 1509172629Smav neg->timeout = PPPOE_INITIAL_TIMEOUT * 2; 1510172629Smav m0 = m_copypacket(neg->m, M_DONTWAIT); 1511172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1512172629Smav break; 1513172629Smav case PADR_CODE: 1514172629Smav /* 1515172629Smav * We are a server: 1516172629Smav * Use the ac_cookie tag to find the 1517172629Smav * hook this is in response to. 1518172629Smav */ 1519172629Smav utag = get_tag(ph, PTT_AC_COOKIE); 1520172629Smav if ((utag == NULL) || 1521172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1522172629Smav LEAVE(ENETUNREACH); 1523172629Smav } 152452419Sjulian 1525172629Smav sendhook = pppoe_finduniq(node, utag); 1526172629Smav if (sendhook == NULL) 1527172629Smav LEAVE(ENETUNREACH); 1528172629Smav 152952419Sjulian /* 1530172629Smav * Check the session is in the right state. 1531172629Smav * It needs to be in PPPOE_SOFFER or PPPOE_NEWCONNECTED. 1532172629Smav * If the latter, then this is a retry by the client, 1533172629Smav * so be nice, and resend. 153452419Sjulian */ 1535172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1536172629Smav if (sp->state == PPPOE_NEWCONNECTED) { 1537172629Smav /* 1538172629Smav * Whoa! drop back to resend that PADS packet. 1539172629Smav * We should still have a copy of it. 1540172629Smav */ 1541172629Smav sp->state = PPPOE_SOFFER; 1542175865Smav } else if (sp->state != PPPOE_SOFFER) 1543172629Smav LEAVE (ENETUNREACH); 1544172629Smav neg = sp->neg; 1545172629Smav ng_uncallout(&neg->handle, node); 1546172629Smav neg->pkt->pkt_header.ph.code = PADS_CODE; 1547175865Smav if (sp->Session_ID == 0) { 1548172629Smav neg->pkt->pkt_header.ph.sid = 1549172629Smav htons(sp->Session_ID 1550172629Smav = get_new_sid(node)); 1551175865Smav pppoe_addsession(sp); 1552175865Smav } 1553172629Smav send_sessionid(sp); 1554172629Smav neg->timeout = 0; 1555172629Smav /* 1556172629Smav * start working out the tags to respond with. 1557172629Smav */ 155852419Sjulian init_tags(sp); 155952419Sjulian insert_tag(sp, &neg->ac_name.hdr); /* AC_NAME */ 156053154Sjulian if ((tag = get_tag(ph, PTT_SRV_NAME))) 1561172629Smav insert_tag(sp, tag);/* return service */ 156253154Sjulian if ((tag = get_tag(ph, PTT_HOST_UNIQ))) 1563172629Smav insert_tag(sp, tag); /* return it */ 1564172629Smav insert_tag(sp, utag); /* ac_cookie */ 156552419Sjulian scan_tags(sp, ph); 156652419Sjulian make_packet(sp); 1567172629Smav sp->state = PPPOE_NEWCONNECTED; 1568172629Smav 1569172629Smav /* Send the PADS without a timeout - we're now connected. */ 1570172629Smav m0 = m_copypacket(sp->neg->m, M_DONTWAIT); 1571172629Smav NG_FWD_NEW_DATA(error, item, privp->ethernet_hook, m0); 1572172629Smav 1573172628Smav /* 1574172629Smav * Having sent the last Negotiation header, 1575172629Smav * Set up the stored packet header to be correct for 1576172629Smav * the actual session. But keep the negotialtion stuff 1577172629Smav * around in case we need to resend this last packet. 1578172629Smav * We'll discard it when we move from NEWCONNECTED 1579172629Smav * to CONNECTED 1580172628Smav */ 1581172629Smav sp->pkt_hdr = neg->pkt->pkt_header; 1582172629Smav /* Configure ethertype depending on what 1583172629Smav * ethertype was used at discovery phase */ 1584172629Smav if (sp->pkt_hdr.eh.ether_type == 1585172629Smav ETHERTYPE_PPPOE_3COM_DISC) 1586172629Smav sp->pkt_hdr.eh.ether_type 1587172629Smav = ETHERTYPE_PPPOE_3COM_SESS; 1588172629Smav else 1589172629Smav sp->pkt_hdr.eh.ether_type 1590172629Smav = ETHERTYPE_PPPOE_SESS; 1591172629Smav sp->pkt_hdr.ph.code = 0; 1592172629Smav pppoe_send_event(sp, NGM_PPPOE_SUCCESS); 159352419Sjulian break; 1594172629Smav case PADS_CODE: 1595172629Smav /* 1596172629Smav * We are a client: 1597172629Smav * Use the host_uniq tag to find the hook this is in 1598172629Smav * response to. Take the session ID and store it away. 1599172629Smav * Also make sure the pre-made header is correct and 1600172629Smav * set us into Session mode. 1601172629Smav */ 1602172629Smav utag = get_tag(ph, PTT_HOST_UNIQ); 1603172629Smav if ((utag == NULL) || 1604172629Smav (ntohs(utag->tag_len) != sizeof(sp))) { 1605172629Smav LEAVE (ENETUNREACH); 1606172629Smav } 1607172629Smav sendhook = pppoe_finduniq(node, utag); 1608172629Smav if (sendhook == NULL) 1609172629Smav LEAVE(ENETUNREACH); 161052419Sjulian 1611172629Smav /* 1612172629Smav * Check the session is in the right state. 1613172629Smav * It needs to be in PPPOE_SREQ. 1614172629Smav */ 1615172629Smav sp = NG_HOOK_PRIVATE(sendhook); 1616172629Smav if (sp->state != PPPOE_SREQ) 1617172629Smav LEAVE(ENETUNREACH); 1618172629Smav neg = sp->neg; 1619172629Smav ng_uncallout(&neg->handle, node); 1620172629Smav neg->pkt->pkt_header.ph.sid = wh->ph.sid; 1621172629Smav sp->Session_ID = ntohs(wh->ph.sid); 1622175865Smav pppoe_addsession(sp); 1623172629Smav send_sessionid(sp); 1624172629Smav neg->timeout = 0; 1625172629Smav sp->state = PPPOE_CONNECTED; 1626172629Smav /* 1627172629Smav * Now we have gone to Connected mode, 1628172629Smav * Free all resources needed for negotiation. 1629172629Smav * Keep a copy of the header we will be using. 1630172629Smav */ 1631172629Smav sp->pkt_hdr = neg->pkt->pkt_header; 1632172629Smav if (privp->flags & COMPAT_3COM) 1633172629Smav sp->pkt_hdr.eh.ether_type 1634172629Smav = ETHERTYPE_PPPOE_3COM_SESS; 1635172629Smav else 1636172629Smav sp->pkt_hdr.eh.ether_type 1637172629Smav = ETHERTYPE_PPPOE_SESS; 1638172629Smav sp->pkt_hdr.ph.code = 0; 1639172629Smav m_freem(neg->m); 1640172629Smav free(sp->neg, M_NETGRAPH_PPPOE); 1641172629Smav sp->neg = NULL; 1642172629Smav pppoe_send_event(sp, NGM_PPPOE_SUCCESS); 1643172629Smav break; 1644172629Smav case PADT_CODE: 1645172629Smav /* 1646172629Smav * Find matching peer/session combination. 1647172629Smav */ 1648175865Smav sp = pppoe_findsession(privp, wh); 1649175865Smav if (sp == NULL) 1650172629Smav LEAVE(ENETUNREACH); 1651172629Smav /* Disconnect that hook. */ 1652175865Smav ng_rmhook_self(sp->hook); 1653172629Smav break; 1654172629Smav default: 1655172629Smav LEAVE(EPFNOSUPPORT); 1656172629Smav } 1657172629Smav break; 1658172629Smav case ETHERTYPE_PPPOE_3COM_SESS: 1659172629Smav case ETHERTYPE_PPPOE_SESS: 166052419Sjulian /* 1661172629Smav * Find matching peer/session combination. 166252419Sjulian */ 1663175865Smav sp = pppoe_findsession(privp, wh); 1664175865Smav if (sp == NULL) 1665172629Smav LEAVE (ENETUNREACH); 1666172629Smav m_adj(m, sizeof(*wh)); 1667172629Smav 1668172629Smav /* If packet too short, dump it. */ 1669172629Smav if (m->m_pkthdr.len < length) 1670172629Smav LEAVE(EMSGSIZE); 1671172629Smav /* Also need to trim excess at the end */ 1672172629Smav if (m->m_pkthdr.len > length) { 1673172629Smav m_adj(m, -((int)(m->m_pkthdr.len - length))); 167452419Sjulian } 1675172629Smav if ( sp->state != PPPOE_CONNECTED) { 1676172629Smav if (sp->state == PPPOE_NEWCONNECTED) { 1677172629Smav sp->state = PPPOE_CONNECTED; 1678172629Smav /* 1679172629Smav * Now we have gone to Connected mode, 1680172629Smav * Free all resources needed for negotiation. 1681172629Smav * Be paranoid about whether there may be 1682172629Smav * a timeout. 1683172629Smav */ 1684172629Smav m_freem(sp->neg->m); 1685172629Smav ng_uncallout(&sp->neg->handle, node); 1686172629Smav free(sp->neg, M_NETGRAPH_PPPOE); 1687172629Smav sp->neg = NULL; 1688172629Smav } else { 1689172629Smav LEAVE (ENETUNREACH); 1690172629Smav } 1691172629Smav } 1692175865Smav NG_FWD_NEW_DATA(error, item, sp->hook, m); 1693172629Smav break; 1694172629Smav default: 1695172629Smav LEAVE(EPFNOSUPPORT); 169652419Sjulian } 169752419Sjulianquit: 169870914Sjulian if (item) 169970914Sjulian NG_FREE_ITEM(item); 170070700Sjulian NG_FREE_M(m); 1701172629Smav return (error); 170252419Sjulian} 170352419Sjulian 170452419Sjulian/* 1705172629Smav * Receive data from debug hook and bypass it to ether. 1706172629Smav */ 1707172629Smavstatic int 1708172629Smavng_pppoe_rcvdata_debug(hook_p hook, item_p item) 1709172629Smav{ 1710172629Smav node_p node = NG_HOOK_NODE(hook); 1711172629Smav const priv_p privp = NG_NODE_PRIVATE(node); 1712172629Smav int error; 1713172629Smav 1714172629Smav CTR6(KTR_NET, "%20s: node [%x] (%p) received %p on \"%s\" (%p)", 1715172629Smav __func__, node->nd_ID, node, item, hook->hk_name, hook); 1716172629Smav 1717172629Smav NG_FWD_ITEM_HOOK(error, item, privp->ethernet_hook); 1718172629Smav privp->packets_out++; 1719172629Smav return (error); 1720172629Smav} 1721172629Smav 1722172629Smav/* 172352419Sjulian * Do local shutdown processing.. 172452419Sjulian * If we are a persistant device, we might refuse to go away, and 172552419Sjulian * we'd only remove our links and reset ourself. 172652419Sjulian */ 172752419Sjulianstatic int 172870700Sjulianng_pppoe_shutdown(node_p node) 172952419Sjulian{ 1730175865Smav const priv_p privp = NG_NODE_PRIVATE(node); 1731175865Smav int i; 173252419Sjulian 1733175865Smav for (i = 0; i < SESSHASHSIZE; i++) 1734175865Smav mtx_destroy(&privp->sesshash[i].mtx); 173570784Sjulian NG_NODE_SET_PRIVATE(node, NULL); 1736175865Smav NG_NODE_UNREF(privp->node); 1737175865Smav free(privp, M_NETGRAPH_PPPOE); 173852419Sjulian return (0); 173952419Sjulian} 174052419Sjulian 174152419Sjulian/* 174252419Sjulian * Hook disconnection 174352419Sjulian * 174453498Sjulian * Clean up all dangling links and information about the session/hook. 1745154604Sglebius * For this type, removal of the last link destroys the node. 174652419Sjulian */ 174752419Sjulianstatic int 174852562Sjulianng_pppoe_disconnect(hook_p hook) 174952419Sjulian{ 175070784Sjulian node_p node = NG_HOOK_NODE(hook); 175170784Sjulian priv_p privp = NG_NODE_PRIVATE(node); 175252419Sjulian sessp sp; 175352419Sjulian 1754172270Smav if (hook == privp->debug_hook) { 175552419Sjulian privp->debug_hook = NULL; 1756172270Smav } else if (hook == privp->ethernet_hook) { 175752419Sjulian privp->ethernet_hook = NULL; 175870784Sjulian if (NG_NODE_IS_VALID(node)) 175970700Sjulian ng_rmnode_self(node); 176052419Sjulian } else { 176170784Sjulian sp = NG_HOOK_PRIVATE(hook); 176252441Sjulian if (sp->state != PPPOE_SNONE ) { 176352441Sjulian pppoe_send_event(sp, NGM_PPPOE_CLOSE); 176452441Sjulian } 176559728Sjulian /* 176659728Sjulian * According to the spec, if we are connected, 176759728Sjulian * we should send a DISC packet if we are shutting down 176859728Sjulian * a session. 176959728Sjulian */ 177052523Sjulian if ((privp->ethernet_hook) 177152523Sjulian && ((sp->state == PPPOE_CONNECTED) 177252523Sjulian || (sp->state == PPPOE_NEWCONNECTED))) { 177352523Sjulian struct mbuf *m; 177452523Sjulian 1775154604Sglebius /* Generate a packet of that type. */ 1776111119Simp MGETHDR(m, M_DONTWAIT, MT_DATA); 1777161034Sglebius if (m == NULL) 1778161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: session out of " 1779161034Sglebius "mbufs\n", node->nd_ID); 178053498Sjulian else { 1781172269Smav struct pppoe_full_hdr *wh; 1782172269Smav struct pppoe_tag *tag; 1783172269Smav int msglen = strlen(SIGNOFF); 1784172269Smav int error = 0; 1785172269Smav 178653498Sjulian m->m_pkthdr.rcvif = NULL; 178753498Sjulian m->m_pkthdr.len = m->m_len = sizeof(*wh); 1788172269Smav wh = mtod(m, struct pppoe_full_hdr *); 1789172269Smav bcopy(&sp->pkt_hdr, wh, sizeof(*wh)); 1790172269Smav 1791172269Smav /* Revert the stored header to DISC/PADT mode. */ 1792172269Smav wh->ph.code = PADT_CODE; 179353498Sjulian /* 1794172269Smav * Configure ethertype depending on what 1795172269Smav * was used during sessions stage. 1796172269Smav */ 1797172269Smav if (wh->eh.ether_type == 1798172269Smav ETHERTYPE_PPPOE_3COM_SESS) 1799172269Smav wh->eh.ether_type = ETHERTYPE_PPPOE_3COM_DISC; 1800172269Smav else 1801172269Smav wh->eh.ether_type = ETHERTYPE_PPPOE_DISC; 1802172269Smav /* 180353498Sjulian * Add a General error message and adjust 1804154604Sglebius * sizes. 180553498Sjulian */ 180653498Sjulian tag = wh->ph.tag; 180753498Sjulian tag->tag_type = PTT_GEN_ERR; 180853498Sjulian tag->tag_len = htons((u_int16_t)msglen); 180953498Sjulian strncpy(tag->tag_data, SIGNOFF, msglen); 181053498Sjulian m->m_pkthdr.len = (m->m_len += sizeof(*tag) + 181153498Sjulian msglen); 181253498Sjulian wh->ph.length = htons(sizeof(*tag) + msglen); 181370700Sjulian NG_SEND_DATA_ONLY(error, 181470700Sjulian privp->ethernet_hook, m); 181553498Sjulian } 181652523Sjulian } 1817175865Smav if (sp->Session_ID) 1818175865Smav pppoe_delsession(sp); 181959728Sjulian /* 182063138Sasmodai * As long as we have somewhere to store the timeout handle, 182159728Sjulian * we may have a timeout pending.. get rid of it. 182259728Sjulian */ 182352443Sjulian if (sp->neg) { 1824138562Sglebius ng_uncallout(&sp->neg->handle, node); 182552443Sjulian if (sp->neg->m) 182652443Sjulian m_freem(sp->neg->m); 1827154604Sglebius free(sp->neg, M_NETGRAPH_PPPOE); 182852443Sjulian } 1829154604Sglebius free(sp, M_NETGRAPH_PPPOE); 183070784Sjulian NG_HOOK_SET_PRIVATE(hook, NULL); 183152419Sjulian } 1832154604Sglebius if ((NG_NODE_NUMHOOKS(node) == 0) && 1833154604Sglebius (NG_NODE_IS_VALID(node))) 183470700Sjulian ng_rmnode_self(node); 183552419Sjulian return (0); 183652419Sjulian} 183752419Sjulian 183852419Sjulian/* 1839154604Sglebius * Timeouts come here. 184052419Sjulian */ 184152419Sjulianstatic void 1842138562Sglebiuspppoe_ticker(node_p node, hook_p hook, void *arg1, int arg2) 184352419Sjulian{ 1844154604Sglebius priv_p privp = NG_NODE_PRIVATE(NG_HOOK_NODE(hook)); 184570784Sjulian sessp sp = NG_HOOK_PRIVATE(hook); 184652419Sjulian negp neg = sp->neg; 1847154604Sglebius struct mbuf *m0 = NULL; 184852419Sjulian int error = 0; 184952419Sjulian 1850154604Sglebius CTR6(KTR_NET, "%20s: node [%x] (%p) hook \"%s\" (%p) session %d", 1851154604Sglebius __func__, node->nd_ID, node, hook->hk_name, hook, sp->Session_ID); 185252419Sjulian switch(sp->state) { 185352419Sjulian /* 1854154604Sglebius * Resend the last packet, using an exponential backoff. 185552419Sjulian * After a period of time, stop growing the backoff, 1856154604Sglebius * And either leave it, or revert to the start. 185752419Sjulian */ 185852419Sjulian case PPPOE_SINIT: 185952419Sjulian case PPPOE_SREQ: 1860154604Sglebius /* Timeouts on these produce resends. */ 1861111119Simp m0 = m_copypacket(sp->neg->m, M_DONTWAIT); 186270700Sjulian NG_SEND_DATA_ONLY( error, privp->ethernet_hook, m0); 1863138562Sglebius ng_callout(&neg->handle, node, hook, neg->timeout * hz, 1864138562Sglebius pppoe_ticker, NULL, 0); 186552419Sjulian if ((neg->timeout <<= 1) > PPPOE_TIMEOUT_LIMIT) { 186652419Sjulian if (sp->state == PPPOE_SREQ) { 1867154604Sglebius /* Revert to SINIT mode. */ 186852441Sjulian pppoe_start(sp); 186952419Sjulian } else { 187052419Sjulian neg->timeout = PPPOE_TIMEOUT_LIMIT; 187152419Sjulian } 187252419Sjulian } 187352419Sjulian break; 187452419Sjulian case PPPOE_PRIMED: 187552419Sjulian case PPPOE_SOFFER: 1876154604Sglebius /* A timeout on these says "give up" */ 187770935Sjulian ng_rmhook_self(hook); 187852419Sjulian break; 187952419Sjulian default: 1880154604Sglebius /* Timeouts have no meaning in other states. */ 1881161034Sglebius log(LOG_NOTICE, "ng_pppoe[%x]: unexpected timeout\n", 1882161034Sglebius node->nd_ID); 188352419Sjulian } 188452419Sjulian} 188552419Sjulian 188652419Sjulian/* 188752419Sjulian * Parse an incoming packet to see if any tags should be copied to the 188853145Sjulian * output packet. Don't do any tags that have been handled in the main 188953145Sjulian * state machine. 189052419Sjulian */ 1891154604Sglebiusstatic const struct pppoe_tag* 189297897Sarchiescan_tags(sessp sp, const struct pppoe_hdr* ph) 189352419Sjulian{ 189497897Sarchie const char *const end = (const char *)next_tag(ph); 189597897Sarchie const char *ptn; 189697897Sarchie const struct pppoe_tag *pt = &ph->tag[0]; 1897154604Sglebius 189852419Sjulian /* 189952419Sjulian * Keep processing tags while a tag header will still fit. 190052419Sjulian */ 1901154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1902154604Sglebius 190397897Sarchie while((const char*)(pt + 1) <= end) { 190452419Sjulian /* 190552419Sjulian * If the tag data would go past the end of the packet, abort. 190652419Sjulian */ 190797897Sarchie ptn = (((const char *)(pt + 1)) + ntohs(pt->tag_len)); 190852419Sjulian if(ptn > end) 190952419Sjulian return NULL; 191052419Sjulian 191152419Sjulian switch (pt->tag_type) { 191252419Sjulian case PTT_RELAY_SID: 191352419Sjulian insert_tag(sp, pt); 191452419Sjulian break; 191552419Sjulian case PTT_EOL: 191652419Sjulian return NULL; 191752419Sjulian case PTT_SRV_NAME: 191852419Sjulian case PTT_AC_NAME: 191952419Sjulian case PTT_HOST_UNIQ: 192052419Sjulian case PTT_AC_COOKIE: 192152419Sjulian case PTT_VENDOR: 192252419Sjulian case PTT_SRV_ERR: 192352419Sjulian case PTT_SYS_ERR: 192452419Sjulian case PTT_GEN_ERR: 192552419Sjulian break; 192652419Sjulian } 192797897Sarchie pt = (const struct pppoe_tag*)ptn; 192852419Sjulian } 192952419Sjulian return NULL; 193052419Sjulian} 193152419Sjulian 193252441Sjulianstatic int 193352441Sjulianpppoe_send_event(sessp sp, enum cmd cmdid) 193452441Sjulian{ 193552441Sjulian int error; 193652441Sjulian struct ng_mesg *msg; 193752562Sjulian struct ngpppoe_sts *sts; 193852441Sjulian 1939154604Sglebius CTR2(KTR_NET, "%20s: called %d", __func__, sp->Session_ID); 1940154604Sglebius 194168845Sbrian NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, cmdid, 194252562Sjulian sizeof(struct ngpppoe_sts), M_NOWAIT); 194369922Sjulian if (msg == NULL) 194469922Sjulian return (ENOMEM); 194552562Sjulian sts = (struct ngpppoe_sts *)msg->data; 1946125028Sharti strncpy(sts->hook, NG_HOOK_NAME(sp->hook), NG_HOOKSIZ); 1947102244Sarchie NG_SEND_MSG_ID(error, NG_HOOK_NODE(sp->hook), msg, sp->creator, 0); 194852441Sjulian return (error); 194952441Sjulian} 1950