// Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
// vim: sw=8 ts=8
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.149 2005/11/17 06:46:24 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.153 2005/12/19 06:08:42 bodea Exp $";
#include <arpa/inet.h>
#include <assert.h>
static uint32_t ip_pool_size = 1; // Size of the pool of addresses used for dynamic address allocation.
time_t time_now = 0; // Current time in seconds since epoch.
static char time_now_string[64] = {0}; // Current time as a string.
-int time_changed = 0; // time_now changed
+static int time_changed = 0; // time_now changed
char main_quit = 0; // True if we're in the process of exiting.
-char main_reload = 0; // Re-load pending
+static char main_reload = 0; // Re-load pending
linked_list *loaded_plugins;
linked_list *plugins[MAX_PLUGIN_TYPES];
LOG(0, 0, 0, "Error setting tun queue length: %s\n", strerror(errno));
exit(1);
}
+ /* set MTU to modem MRU */
+ ifr.ifr_mtu = MRU;
+ if (ioctl(ifrfd, SIOCSIFMTU, (void *) &ifr) < 0)
+ {
+ LOG(0, 0, 0, "Error setting tun MTU: %s\n", strerror(errno));
+ exit(1);
+ }
ifr.ifr_flags = IFF_UP;
if (ioctl(ifrfd, SIOCSIFFLAGS, (void *) &ifr) < 0)
{
if (!t)
{
- static int backtrace_count = 0;
LOG(0, 0, t, "tunnelsend called with 0 as tunnel id\n");
STAT(tunnel_tx_errors);
- log_backtrace(backtrace_count, 5)
return;
}
if (!tunnel[t].ip)
{
- static int backtrace_count = 0;
LOG(1, 0, t, "Error sending data out tunnel: no remote endpoint (tunnel not set up)\n");
- log_backtrace(backtrace_count, 5)
STAT(tunnel_tx_errors);
return;
}
if (amagic == 0) amagic = time_now;
session[s].magic = amagic; // set magic number
session[s].flags = aflags; // set flags received
- session[s].mru = PPPMTU; // default
+ session[s].mru = PPPoE_MRU; // default
controlnull(t); // ack
// start LCP
}
else if (session[s].ppp.lcp == Opened)
{
- uint8_t buf[MAXETHER];
- uint8_t *q;
- int mru = session[s].mru;
- if (mru > sizeof(buf)) mru = sizeof(buf);
-
- l += 6;
- if (l > mru) l = mru;
-
- q = makeppp(buf, sizeof(buf), 0, 0, s, t, PPPLCP);
- if (!q) return;
-
- *q = ProtocolRej;
- *(q + 1) = ++sess_local[s].lcp_ident;
- *(uint16_t *)(q + 2) = htons(l);
- *(uint16_t *)(q + 4) = htons(proto);
- memcpy(q + 6, p, l - 6);
-
- if (proto == PPPIPV6CP)
- LOG(3, s, t, "LCP: send ProtocolRej (IPV6CP: not configured)\n");
- else
- LOG(2, s, t, "LCP: sent ProtocolRej (0x%04X: unsupported)\n", proto);
-
- tunnelsend(buf, l + (q - buf), t);
+ session[s].last_packet = time_now;
+ if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; }
+ protoreject(s, t, p, l, proto);
}
else
{
#define L2TP_HDRS (20+8+6+4) // L2TP data encaptulation: ip + udp + l2tp (data) + ppp (inc hdlc)
#define TCP_HDRS (20+20) // TCP encapsulation: ip + tcp
- if (config->l2tp_mtu <= 0) config->l2tp_mtu = PPPMTU;
+ if (config->l2tp_mtu <= 0) config->l2tp_mtu = 1500; // ethernet default
else if (config->l2tp_mtu < MINMTU) config->l2tp_mtu = MINMTU;
else if (config->l2tp_mtu > MAXMTU) config->l2tp_mtu = MAXMTU;
// reset MRU/MSS globals
MRU = config->l2tp_mtu - L2TP_HDRS;
+ if (MRU > PPPoE_MRU)
+ MRU = PPPoE_MRU;
+
MSS = MRU - TCP_HDRS;
// Update radius