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A version of the pppoe code ellicits a response from the ISP end

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(but still not quite right)
This commit is contained in:
Julian Elischer 1999-10-23 15:15:42 +00:00
parent 37d636b2d4
commit 1e2510f8ef
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=52443
1 changed files with 65 additions and 19 deletions
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84
sys/netgraph/ng_pppoe.c
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@ -39,6 +39,11 @@
* $FreeBSD$
* $Whistle: ng_pppoe.c,v 1.7 1999/10/16 10:16:43 julian Exp $
*/
#if 0
#define AAA printf("pppoe: %s\n", __FUNCTION__ );
#else
#define AAA
#endif
#include <sys/param.h>
#include <sys/systm.h>
@ -99,14 +104,6 @@ enum state {
PPPOE_CONNECTED, /* [Both] Connection established, Data received */
PPPOE_DEAD /* [Both] */
};
/*
* Events for the state machine
*/
enum event {
PPPOE_TIMEOUT, /* It's time to do something */
PPPOE_PACKET, /* a packet has been received. */
PPPOE_CLOSE /* start shutdown processing */
};
#define NUMTAGS 20 /* number of tags we are set up to work with */
@ -194,6 +191,7 @@ get_new_sid(node_p node)
u_int16_t val;
priv_p privp = node->private;
AAA
restart:
val = pppoe_sid++;
/*
@ -243,6 +241,7 @@ get_tag(struct pppoe_hdr* ph, u_int16_t idx)
/*
* Keep processing tags while a tag header will still fit.
*/
AAA
while((char*)(pt + 1) <= end) {
/*
* If the tag data would go past the end of the packet, abort.
@ -268,6 +267,7 @@ get_tag(struct pppoe_hdr* ph, u_int16_t idx)
static void
init_tags(sessp sp)
{
AAA
if(sp->neg == NULL) {
printf("pppoe: asked to init NULL neg pointer\n");
return;
@ -281,6 +281,7 @@ insert_tag(sessp sp, struct pppoe_tag *tp)
int i;
negp neg;
AAA
if((neg = sp->neg) == NULL) {
printf("pppoe: asked to use NULL neg pointer\n");
return;
@ -309,7 +310,8 @@ make_packet(sessp sp) {
int tlen;
u_int16_t length = 0;
if ((sp->neg == NULL) || (sp->neg->m = NULL)) {
AAA
if ((sp->neg == NULL) || (sp->neg->m == NULL)) {
printf("pppoe: make_packet called from wrong state\n");
}
dp = (char *)wh->ph.tag;
@ -349,6 +351,7 @@ pppoe_match_svc(node_p node, char *svc_name, int svc_len)
priv_p privp = node->private;
hook_p hook;
AAA
LIST_FOREACH(hook, &node->hooks, hooks) {
/* skip any hook that is debug or ethernet */
@ -399,6 +402,7 @@ pppoe_findsession(node_p node, struct pppoe_full_hdr *wh)
/*
* find matching peer/session combination.
*/
AAA
LIST_FOREACH(hook, &node->hooks, hooks) {
/* don't check special hooks */
if ((hook->private == &privp->debug_hook)
@ -425,6 +429,7 @@ pppoe_finduniq(node_p node, struct pppoe_tag *tag)
priv_p privp = node->private;
union uniq uniq;
AAA
bcopy(tag->tag_data, uniq.bytes, sizeof(void *));
/* cycle through all known hooks */
LIST_FOREACH(hook, &node->hooks, hooks) {
@ -461,6 +466,7 @@ ng_PPPoE_constructor(node_p *nodep)
priv_p privdata;
int error;
AAA
/* Initialize private descriptor */
MALLOC(privdata, priv_p, sizeof(*privdata), M_NETGRAPH, M_WAITOK);
if (privdata == NULL)
@ -493,6 +499,7 @@ ng_PPPoE_newhook(node_p node, hook_p hook, const char *name)
const priv_p privp = node->private;
sessp sp;
AAA
if (strcmp(name, NG_PPPOE_HOOK_ETHERNET) == 0) {
privp->ethernet_hook = hook;
hook->private = &privp->ethernet_hook;
@ -513,7 +520,6 @@ ng_PPPoE_newhook(node_p node, hook_p hook, const char *name)
hook->private = sp;
sp->hook = hook;
callout_handle_init( &sp->neg->timeout_handle);
}
return(0);
}
@ -536,6 +542,7 @@ ng_PPPoE_rcvmsg(node_p node,
sessp sp = NULL;
negp neg = NULL;
AAA
/* Deal with message according to cookie and command */
switch (msg->header.typecookie) {
case NGM_PPPOE_COOKIE:
@ -576,10 +583,10 @@ ng_PPPoE_rcvmsg(node_p node,
printf("pppoe: Session already active\n");
LEAVE(EISCONN);
}
/*
* set up prototype header
*/
MALLOC(neg, negp, sizeof(*neg), M_NETGRAPH, M_WAITOK);
if (neg == NULL) {
@ -589,17 +596,20 @@ ng_PPPoE_rcvmsg(node_p node,
bzero(neg, sizeof(*neg));
MGETHDR(neg->m, M_DONTWAIT, MT_DATA);
if(neg->m == NULL) {
printf("pppoe: Session out of mbufs\n");
FREE(neg, M_NETGRAPH);
LEAVE(ENOBUFS);
}
neg->m->m_pkthdr.rcvif = NULL;
MCLGET(neg->m, M_DONTWAIT);
if ((neg->m->m_flags & M_EXT) == 0) {
printf("pppoe: Session out of mcls\n");
m_freem(neg->m);
FREE(neg, M_NETGRAPH);
LEAVE(ENOBUFS);
}
sp->neg = neg;
callout_handle_init( &neg->timeout_handle);
neg->m->m_len = sizeof(struct pppoe_full_hdr);
neg->pkt = mtod(neg->m, union packet*);
neg->pkt->pkt_header.eh = eh_prototype;
@ -638,10 +648,11 @@ ng_PPPoE_rcvmsg(node_p node,
neg->service.hdr.tag_type = PTT_SRV_NAME;
neg->service.hdr.tag_len =
htons((u_int16_t)ourmsg->data_len);
bcopy(ourmsg->data,
neg->service.data, ourmsg->data_len);
if (ourmsg->data_len) {
bcopy(ourmsg->data,
neg->service.data, ourmsg->data_len);
}
neg->service_len = ourmsg->data_len;
neg->pkt->pkt_header.ph.code = PADI_CODE;
pppoe_start(sp);
break;
case NGM_PPPOE_LISTEN:
@ -651,12 +662,16 @@ ng_PPPoE_rcvmsg(node_p node,
* Store the originator of this message so we can send
* a success of fail message to them later.
* Move the hook to 'LISTENING'
*/
neg->service.hdr.tag_type = PTT_SRV_NAME;
neg->service.hdr.tag_len =
htons((u_int16_t)ourmsg->data_len);
bcopy(ourmsg->data,
neg->service.data, ourmsg->data_len);
if (ourmsg->data_len) {
bcopy(ourmsg->data,
neg->service.data, ourmsg->data_len);
}
neg->service_len = ourmsg->data_len;
neg->pkt->pkt_header.ph.code = PADT_CODE;
/*
@ -674,8 +689,10 @@ ng_PPPoE_rcvmsg(node_p node,
neg->ac_name.hdr.tag_type = PTT_AC_NAME;
neg->ac_name.hdr.tag_len =
htons((u_int16_t)ourmsg->data_len);
bcopy(ourmsg->data,
neg->ac_name.data, ourmsg->data_len);
if (ourmsg->data_len) {
bcopy(ourmsg->data,
neg->ac_name.data, ourmsg->data_len);
}
neg->ac_name_len = ourmsg->data_len;
neg->pkt->pkt_header.ph.code = PADO_CODE;
/*
@ -703,6 +720,10 @@ ng_PPPoE_rcvmsg(node_p node,
return(error);
}
/*
* Start a client into the first state. A separate function because
* it can be needed if the negotiation times out.
*/
static void
pppoe_start(sessp sp)
{
@ -714,7 +735,11 @@ pppoe_start(sessp sp)
/*
* kick the state machine into starting up
*/
AAA
sp->state = PPPOE_SINIT;
/* reset the packet header to broadcast */
sp->neg->pkt->pkt_header.eh = eh_prototype;
sp->neg->pkt->pkt_header.ph.code = PADI_CODE;
uniqtag.hdr.tag_type = PTT_HOST_UNIQ;
uniqtag.hdr.tag_len = htons((u_int16_t)sizeof(uniqtag.data));
uniqtag.data.pointer = sp;
@ -750,6 +775,7 @@ ng_PPPoE_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
} uniqtag;
negp neg = NULL;
AAA
if (hook->private == &privp->debug_hook) {
/*
* Data from the debug hook gets sent without modification
@ -764,6 +790,9 @@ ng_PPPoE_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
* use them to decide where to send it.
*/
printf("got packet\n");
LEAVE(0);
privp->packets_in++;
m_pullup(m, sizeof(*wh)); /* Checks length */
if (m == NULL) {
@ -1095,6 +1124,11 @@ ng_PPPoE_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
session = ntohs(wh->ph.sid);
length = ntohs(wh->ph.length);
code = wh->ph.code;
if ( code != PADI_CODE) {
LEAVE(EINVAL);
};
untimeout(pppoe_ticker, hook,
neg->timeout_handle);
/*
* This is the first time we hear
@ -1156,6 +1190,7 @@ ng_PPPoE_rmnode(node_p node)
{
const priv_p privdata = node->private;
AAA
node->flags |= NG_INVALID;
ng_cutlinks(node);
ng_unname(node);
@ -1189,6 +1224,7 @@ ng_PPPoE_disconnect(hook_p hook)
priv_p privp = node->private;
sessp sp;
AAA
if (hook->private == &privp->debug_hook) {
privp->debug_hook = NULL;
} else if (hook->private == &privp->ethernet_hook) {
@ -1198,8 +1234,14 @@ ng_PPPoE_disconnect(hook_p hook)
if (sp->state != PPPOE_SNONE ) {
pppoe_send_event(sp, NGM_PPPOE_CLOSE);
}
untimeout(pppoe_ticker, hook, sp->neg->timeout_handle);
if (sp->neg) {
untimeout(pppoe_ticker, hook, sp->neg->timeout_handle);
if (sp->neg->m)
m_freem(sp->neg->m);
FREE(sp->neg, M_NETGRAPH);
}
FREE(sp, M_NETGRAPH);
hook->private = NULL;
}
if (node->numhooks == 0)
ng_rmnode(node);
@ -1221,6 +1263,7 @@ pppoe_ticker(void *arg)
priv_p privp = hook->node->private;
meta_p dummy = NULL;
AAA
switch(sp->state) {
/*
* resend the last packet, using an exponential backoff.
@ -1266,6 +1309,7 @@ sendpacket(sessp sp)
priv_p privp = hook->node->private;
meta_p dummy = NULL;
AAA
switch(sp->state) {
case PPPOE_LISTENING:
case PPPOE_DEAD:
@ -1321,6 +1365,7 @@ scan_tags(sessp sp, struct pppoe_hdr* ph)
/*
* Keep processing tags while a tag header will still fit.
*/
AAA
while((char*)(pt + 1) <= end) {
/*
* If the tag data would go past the end of the packet, abort.
@ -1357,6 +1402,7 @@ pppoe_send_event(sessp sp, enum cmd cmdid)
struct ng_mesg *msg;
struct ngPPPoE_sts *sts;
AAA
NG_MKMESSAGE(msg, NGM_PPPOE_COOKIE, cmdid,
sizeof(struct ngPPPoE_sts), M_NOWAIT);
sts = (struct ngPPPoE_sts *)msg->data;