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When a netgraph message is read, look for another before returning.

Browse Source 
This removes a bad latency problem during initial setup where we
end up waiting for too long before reading the connected message
and time the connection out.

Problem figured out by:	Andre Albsmeier <andre@albsmeier.net>
This commit is contained in:
brian 2002-06-29 18:49:08 +00:00
parent 7d5cddbc11
commit 8368fc422d
1 changed files with 74 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

145
usr.sbin/ppp/ether.c
View File

@ -230,78 +230,81 @@ ether_MessageIn(struct etherdevice *dev)
log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n");
return;
}
zerofdset(r);
FD_SET(dev->cs, r);
t.tv_sec = t.tv_usec = 0;
ret = select(dev->cs + 1, r, NULL, NULL, &t);
while (1) {
zerofdset(r);
FD_SET(dev->cs, r);
t.tv_sec = t.tv_usec = 0;
ret = select(dev->cs + 1, r, NULL, NULL, &t);
if (ret <= 0)
break;
if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0)
break;
if (rep->header.version != NG_VERSION) {
log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n",
(long)rep->header.version, (long)NG_VERSION);
break;
}
if (rep->header.typecookie != NGM_PPPOE_COOKIE) {
log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n",
(long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE);
break;
}
asciilen = 0;
switch (rep->header.cmd) {
case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break;
case NGM_PPPOE_CONNECT: msg = "CONNECT"; break;
case NGM_PPPOE_LISTEN: msg = "LISTEN"; break;
case NGM_PPPOE_OFFER: msg = "OFFER"; break;
case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break;
case NGM_PPPOE_FAIL: msg = "FAIL"; break;
case NGM_PPPOE_CLOSE: msg = "CLOSE"; break;
case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break;
case NGM_PPPOE_ACNAME:
msg = "ACNAME";
if (setenv("ACNAME", sts->hook, 1) != 0)
log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook);
asciilen = rep->header.arglen;
break;
case NGM_PPPOE_SESSIONID:
msg = "SESSIONID";
snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts);
if (setenv("SESSIONID", sessionid, 1) != 0)
syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m",
sessionid);
/* Use this in preference to our interface index */
slot = strtoul(sessionid, &end, 16);
if (end != sessionid && *end == '\0')
dev->slot = slot;
break;
default:
snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd);
msg = unknown;
break;
}
if (asciilen)
log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n",
msg, asciilen, sts->hook);
else
log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg);
switch (rep->header.cmd) {
case NGM_PPPOE_SUCCESS:
dev->connected = CARRIER_OK;
break;
case NGM_PPPOE_FAIL:
case NGM_PPPOE_CLOSE:
dev->connected = CARRIER_LOST;
break;
}
}
free(r);
if (ret <= 0)
return;
if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0)
return;
if (rep->header.version != NG_VERSION) {
log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n",
(long)rep->header.version, (long)NG_VERSION);
return;
}
if (rep->header.typecookie != NGM_PPPOE_COOKIE) {
log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n",
(long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE);
return;
}
asciilen = 0;
switch (rep->header.cmd) {
case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break;
case NGM_PPPOE_CONNECT: msg = "CONNECT"; break;
case NGM_PPPOE_LISTEN: msg = "LISTEN"; break;
case NGM_PPPOE_OFFER: msg = "OFFER"; break;
case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break;
case NGM_PPPOE_FAIL: msg = "FAIL"; break;
case NGM_PPPOE_CLOSE: msg = "CLOSE"; break;
case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break;
case NGM_PPPOE_ACNAME:
msg = "ACNAME";
if (setenv("ACNAME", sts->hook, 1) != 0)
log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook);
asciilen = rep->header.arglen;
break;
case NGM_PPPOE_SESSIONID:
msg = "SESSIONID";
snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts);
if (setenv("SESSIONID", sessionid, 1) != 0)
syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m",
sessionid);
/* Use this in preference to our interface index */
slot = strtoul(sessionid, &end, 16);
if (end != sessionid && *end == '\0')
dev->slot = slot;
break;
default:
snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd);
msg = unknown;
break;
}
if (asciilen)
log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n",
msg, asciilen, sts->hook);
else
log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg);
switch (rep->header.cmd) {
case NGM_PPPOE_SUCCESS:
dev->connected = CARRIER_OK;
break;
case NGM_PPPOE_FAIL:
case NGM_PPPOE_CLOSE:
dev->connected = CARRIER_LOST;
break;
}
}
static int