* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * $Id: ipv6cp.c,v 1.17 2002/12/04 23:03:32 paulus Exp $
*/
-#define RCSID "$Id: ipv6cp.c,v 1.17 2002/12/04 23:03:32 paulus Exp $"
-
/*
* TODO:
*
*/
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netdb.h>
#include "magic.h"
#include "pathnames.h"
-static const char rcsid[] = RCSID;
/* global vars */
ipv6cp_options ipv6cp_wantoptions[NUM_PPP]; /* Options that we want to request */
int no_ifaceid_neg = 0;
/* local vars */
+static int default_route_set[NUM_PPP]; /* Have set up a default route */
static int ipv6cp_is_up;
+/* Hook for a plugin to know when IPv6 protocol has come up */
+void (*ipv6_up_hook)(void) = NULL;
+
+/* Hook for a plugin to know when IPv6 protocol has come down */
+void (*ipv6_down_hook)(void) = NULL;
+
+/* Notifiers for when IPCPv6 goes up and down */
+struct notifier *ipv6_up_notifier = NULL;
+struct notifier *ipv6_down_notifier = NULL;
+
/*
* Callbacks for fsm code. (CI = Configuration Information)
*/
-static void ipv6cp_resetci __P((fsm *)); /* Reset our CI */
-static int ipv6cp_cilen __P((fsm *)); /* Return length of our CI */
-static void ipv6cp_addci __P((fsm *, u_char *, int *)); /* Add our CI */
-static int ipv6cp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */
-static int ipv6cp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */
-static int ipv6cp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */
-static int ipv6cp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */
-static void ipv6cp_up __P((fsm *)); /* We're UP */
-static void ipv6cp_down __P((fsm *)); /* We're DOWN */
-static void ipv6cp_finished __P((fsm *)); /* Don't need lower layer */
+static void ipv6cp_resetci (fsm *); /* Reset our CI */
+static int ipv6cp_cilen (fsm *); /* Return length of our CI */
+static void ipv6cp_addci (fsm *, u_char *, int *); /* Add our CI */
+static int ipv6cp_ackci (fsm *, u_char *, int); /* Peer ack'd our CI */
+static int ipv6cp_nakci (fsm *, u_char *, int, int);/* Peer nak'd our CI */
+static int ipv6cp_rejci (fsm *, u_char *, int); /* Peer rej'd our CI */
+static int ipv6cp_reqci (fsm *, u_char *, int *, int); /* Rcv CI */
+static void ipv6cp_up (fsm *); /* We're UP */
+static void ipv6cp_down (fsm *); /* We're DOWN */
+static void ipv6cp_finished (fsm *); /* Don't need lower layer */
fsm ipv6cp_fsm[NUM_PPP]; /* IPV6CP fsm structure */
/*
* Command-line options.
*/
-static int setifaceid __P((char **arg));
-static void printifaceid __P((option_t *,
- void (*)(void *, char *, ...), void *));
+static int setifaceid (char **arg);
+static void printifaceid (option_t *,
+ void (*)(void *, char *, ...), void *);
static option_t ipv6cp_option_list[] = {
{ "ipv6", o_special, (void *)setifaceid,
{ "ipv6cp-accept-local", o_bool, &ipv6cp_allowoptions[0].accept_local,
"Accept peer's interface identifier for us", 1 },
+ { "ipv6cp-accept-remote", o_bool, &ipv6cp_allowoptions[0].accept_remote,
+ "Accept peer's interface identifier for itself", 1 },
+
+ { "defaultroute6", o_bool, &ipv6cp_wantoptions[0].default_route,
+ "Add default IPv6 route", OPT_ENABLE|1, &ipv6cp_allowoptions[0].default_route },
+ { "nodefaultroute6", o_bool, &ipv6cp_allowoptions[0].default_route,
+ "disable defaultroute6 option", OPT_A2CLR,
+ &ipv6cp_wantoptions[0].default_route },
+ { "-defaultroute6", o_bool, &ipv6cp_allowoptions[0].default_route,
+ "disable defaultroute6 option", OPT_ALIAS | OPT_A2CLR,
+ &ipv6cp_wantoptions[0].default_route },
{ "ipv6cp-use-ipaddr", o_bool, &ipv6cp_allowoptions[0].use_ip,
"Use (default) IPv4 address as interface identifier", 1 },
-#if defined(SOL2) || defined(__linux__)
{ "ipv6cp-use-persistent", o_bool, &ipv6cp_wantoptions[0].use_persistent,
"Use uniquely-available persistent value for link local address", 1 },
-#endif /* defined(SOL2) */
{ "ipv6cp-restart", o_int, &ipv6cp_fsm[0].timeouttime,
"Set timeout for IPv6CP", OPT_PRIO },
/*
* Protocol entry points from main code.
*/
-static void ipv6cp_init __P((int));
-static void ipv6cp_open __P((int));
-static void ipv6cp_close __P((int, char *));
-static void ipv6cp_lowerup __P((int));
-static void ipv6cp_lowerdown __P((int));
-static void ipv6cp_input __P((int, u_char *, int));
-static void ipv6cp_protrej __P((int));
-static int ipv6cp_printpkt __P((u_char *, int,
- void (*) __P((void *, char *, ...)), void *));
-static void ipv6_check_options __P((void));
-static int ipv6_demand_conf __P((int));
-static int ipv6_active_pkt __P((u_char *, int));
+static void ipv6cp_init (int);
+static void ipv6cp_open (int);
+static void ipv6cp_close (int, char *);
+static void ipv6cp_lowerup (int);
+static void ipv6cp_lowerdown (int);
+static void ipv6cp_input (int, u_char *, int);
+static void ipv6cp_protrej (int);
+static int ipv6cp_printpkt (u_char *, int,
+ void (*) (void *, char *, ...), void *);
+static void ipv6_check_options (void);
+static int ipv6_demand_conf (int);
+static int ipv6_active_pkt (u_char *, int);
struct protent ipv6cp_protent = {
PPP_IPV6CP,
ipv6cp_close,
ipv6cp_printpkt,
NULL,
- 0,
+ 1,
"IPV6CP",
"IPV6",
ipv6cp_option_list,
ipv6_active_pkt
};
-static void ipv6cp_clear_addrs __P((int, eui64_t, eui64_t));
-static void ipv6cp_script __P((char *));
-static void ipv6cp_script_done __P((void *));
+static void ipv6cp_clear_addrs (int, eui64_t, eui64_t);
+static void ipv6cp_script (char *);
+static void ipv6cp_script_done (void *);
/*
* Lengths of configuration options.
* setifaceid - set the interface identifiers manually
*/
static int
-setifaceid(argv)
- char **argv;
+setifaceid(char **argv)
{
char *comma, *arg, c;
ipv6cp_options *wo = &ipv6cp_wantoptions[0];
char *llv6_ntoa(eui64_t ifaceid);
static void
-printifaceid(opt, printer, arg)
- option_t *opt;
- void (*printer) __P((void *, char *, ...));
- void *arg;
+printifaceid(option_t *opt, void (*printer) (void *, char *, ...), void *arg)
{
ipv6cp_options *wo = &ipv6cp_wantoptions[0];
* Make a string representation of a network address.
*/
char *
-llv6_ntoa(ifaceid)
- eui64_t ifaceid;
+llv6_ntoa(eui64_t ifaceid)
{
static char b[64];
* ipv6cp_init - Initialize IPV6CP.
*/
static void
-ipv6cp_init(unit)
- int unit;
+ipv6cp_init(int unit)
{
fsm *f = &ipv6cp_fsm[unit];
ipv6cp_options *wo = &ipv6cp_wantoptions[unit];
memset(wo, 0, sizeof(*wo));
memset(ao, 0, sizeof(*ao));
- wo->accept_local = 1;
+ wo->accept_local = 0;
+ wo->accept_remote = 0;
wo->neg_ifaceid = 1;
ao->neg_ifaceid = 1;
wo->vj_protocol = IPV6CP_COMP;
#endif
+ /*
+ * XXX This controls whether the user may use the defaultroute option.
+ */
+ ao->default_route = 1;
}
* ipv6cp_open - IPV6CP is allowed to come up.
*/
static void
-ipv6cp_open(unit)
- int unit;
+ipv6cp_open(int unit)
{
fsm_open(&ipv6cp_fsm[unit]);
}
* ipv6cp_close - Take IPV6CP down.
*/
static void
-ipv6cp_close(unit, reason)
- int unit;
- char *reason;
+ipv6cp_close(int unit, char *reason)
{
fsm_close(&ipv6cp_fsm[unit], reason);
}
* ipv6cp_lowerup - The lower layer is up.
*/
static void
-ipv6cp_lowerup(unit)
- int unit;
+ipv6cp_lowerup(int unit)
{
fsm_lowerup(&ipv6cp_fsm[unit]);
}
* ipv6cp_lowerdown - The lower layer is down.
*/
static void
-ipv6cp_lowerdown(unit)
- int unit;
+ipv6cp_lowerdown(int unit)
{
fsm_lowerdown(&ipv6cp_fsm[unit]);
}
* ipv6cp_input - Input IPV6CP packet.
*/
static void
-ipv6cp_input(unit, p, len)
- int unit;
- u_char *p;
- int len;
+ipv6cp_input(int unit, u_char *p, int len)
{
fsm_input(&ipv6cp_fsm[unit], p, len);
}
* Pretend the lower layer went down, so we shut up.
*/
static void
-ipv6cp_protrej(unit)
- int unit;
+ipv6cp_protrej(int unit)
{
fsm_lowerdown(&ipv6cp_fsm[unit]);
}
* ipv6cp_resetci - Reset our CI.
*/
static void
-ipv6cp_resetci(f)
- fsm *f;
+ipv6cp_resetci(fsm *f)
{
ipv6cp_options *wo = &ipv6cp_wantoptions[f->unit];
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
wo->req_ifaceid = wo->neg_ifaceid && ipv6cp_allowoptions[f->unit].neg_ifaceid;
if (!wo->opt_local) {
- eui64_magic_nz(wo->ourid);
+ wo->accept_local = 1;
+ if (!demand)
+ eui64_magic_nz(wo->ourid);
}
+ if (!wo->opt_remote)
+ wo->accept_remote = 1;
*go = *wo;
eui64_zero(go->hisid); /* last proposed interface identifier */
* ipv6cp_cilen - Return length of our CI.
*/
static int
-ipv6cp_cilen(f)
- fsm *f;
+ipv6cp_cilen(fsm *f)
{
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
* ipv6cp_addci - Add our desired CIs to a packet.
*/
static void
-ipv6cp_addci(f, ucp, lenp)
- fsm *f;
- u_char *ucp;
- int *lenp;
+ipv6cp_addci(fsm *f, u_char *ucp, int *lenp)
{
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
int len = *lenp;
* 1 - Ack was good.
*/
static int
-ipv6cp_ackci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipv6cp_ackci(fsm *f, u_char *p, int len)
{
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
u_short cilen, citype, cishort;
* 1 - Nak was good.
*/
static int
-ipv6cp_nakci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipv6cp_nakci(fsm *f, u_char *p, int len, int treat_as_reject)
{
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
u_char citype, cilen, *next;
* from our idea, only if the accept_{local,remote} flag is set.
*/
NAKCIIFACEID(CI_IFACEID, neg_ifaceid,
- if (go->accept_local) {
- while (eui64_iszero(ifaceid) ||
- eui64_equals(ifaceid, go->hisid)) /* bad luck */
- eui64_magic(ifaceid);
- try.ourid = ifaceid;
- IPV6CPDEBUG(("local LL address %s", llv6_ntoa(ifaceid)));
- }
- );
+ if (treat_as_reject) {
+ try.neg_ifaceid = 0;
+ } else if (go->accept_local) {
+ while (eui64_iszero(ifaceid) ||
+ eui64_equals(ifaceid, go->hisid)) /* bad luck */
+ eui64_magic(ifaceid);
+ try.ourid = ifaceid;
+ IPV6CPDEBUG(("local LL address %s", llv6_ntoa(ifaceid)));
+ }
+ );
#ifdef IPV6CP_COMP
NAKCIVJ(CI_COMPRESSTYPE, neg_vj,
{
- if (cishort == IPV6CP_COMP) {
+ if (cishort == IPV6CP_COMP && !treat_as_reject) {
try.vj_protocol = cishort;
} else {
try.neg_vj = 0;
* If they want to negotiate about interface identifier, we comply.
* If they want us to ask for compression, we refuse.
*/
- while (len > CILEN_VOID) {
+ while (len >= CILEN_VOID) {
GETCHAR(citype, p);
GETCHAR(cilen, p);
- if( (len -= cilen) < 0 )
+ if ( cilen < CILEN_VOID || (len -= cilen) < 0 )
goto bad;
next = p + cilen - 2;
* ipv6cp_rejci - Reject some of our CIs.
*/
static int
-ipv6cp_rejci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipv6cp_rejci(fsm *f, u_char *p, int len)
{
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
u_char cilen;
* CONFNAK; returns CONFREJ if it can't return CONFACK.
*/
static int
-ipv6cp_reqci(f, inp, len, reject_if_disagree)
- fsm *f;
- u_char *inp; /* Requested CIs */
- int *len; /* Length of requested CIs */
- int reject_if_disagree;
+ipv6cp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree)
{
ipv6cp_options *wo = &ipv6cp_wantoptions[f->unit];
ipv6cp_options *ho = &ipv6cp_hisoptions[f->unit];
orc = CONFREJ; /* Reject CI */
break;
}
- if (!eui64_iszero(wo->hisid) &&
+ if (!eui64_iszero(wo->hisid) && !wo->accept_remote &&
!eui64_equals(ifaceid, wo->hisid) &&
eui64_iszero(go->hisid)) {
}
+/*
+ * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
+ *
+ * walks the list of valid ethernet interfaces, starting with devnam
+ * (for PPPoE it is ethernet interface), and convert the first
+ * found 48-bit MAC address into EUI 64. caller also assumes that
+ * the system has a properly configured Ethernet interface for this
+ * function to return non-zero.
+ */
+static int
+ether_to_eui64(eui64_t *p_eui64)
+{
+ u_char addr[6];
+
+ if (get_if_hwaddr(addr, devnam) < 0 && get_first_ether_hwaddr(addr) < 0) {
+ error("ipv6cp: no persistent id can be found");
+ return 0;
+ }
+
+ /*
+ * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
+ */
+ p_eui64->e8[0] = addr[0] | 0x02;
+ p_eui64->e8[1] = addr[1];
+ p_eui64->e8[2] = addr[2];
+ p_eui64->e8[3] = 0xFF;
+ p_eui64->e8[4] = 0xFE;
+ p_eui64->e8[5] = addr[3];
+ p_eui64->e8[6] = addr[4];
+ p_eui64->e8[7] = addr[5];
+
+ return 1;
+}
+
+
/*
* ipv6_check_options - check that any IP-related options are OK,
* and assign appropriate defaults.
*/
static void
-ipv6_check_options()
+ipv6_check_options(void)
{
ipv6cp_options *wo = &ipv6cp_wantoptions[0];
if (!ipv6cp_protent.enabled_flag)
return;
-#if defined(SOL2) || defined(__linux__)
/*
* Persistent link-local id is only used when user has not explicitly
* configure/hard-code the id
*/
- if ((wo->use_persistent) && (!wo->opt_local) && (!wo->opt_remote)) {
+ if ((wo->use_persistent) && (!wo->opt_local)) {
/*
* On systems where there are no Ethernet interfaces used, there
wo->opt_local = 1;
}
}
-#endif
if (!wo->opt_local) { /* init interface identifier */
if (wo->use_ip && eui64_iszero(wo->ourid)) {
wo->opt_remote = 1;
}
}
-
- if (demand && (eui64_iszero(wo->ourid) || eui64_iszero(wo->hisid))) {
- option_error("local/remote LL address required for demand-dialling\n");
- exit(1);
- }
}
* IPV6CP were up, for use with dial-on-demand.
*/
static int
-ipv6_demand_conf(u)
- int u;
+ipv6_demand_conf(int u)
{
ipv6cp_options *wo = &ipv6cp_wantoptions[u];
-#if defined(__linux__) || defined(SOL2) || (defined(SVR4) && (defined(SNI) || defined(__USLC__)))
-#if defined(SOL2)
+ if (eui64_iszero(wo->hisid)) {
+ /* make up an arbitrary identifier for the peer */
+ eui64_magic_nz(wo->hisid);
+ }
+ if (eui64_iszero(wo->ourid)) {
+ /* make up an arbitrary identifier for us */
+ eui64_magic_nz(wo->ourid);
+ }
+
if (!sif6up(u))
return 0;
-#else
- if (!sifup(u))
- return 0;
-#endif /* defined(SOL2) */
-#endif
if (!sif6addr(u, wo->ourid, wo->hisid))
return 0;
#if !defined(__linux__) && !(defined(SVR4) && (defined(SNI) || defined(__USLC__)))
#endif
if (!sifnpmode(u, PPP_IPV6, NPMODE_QUEUE))
return 0;
+ if (wo->default_route)
+ if (sif6defaultroute(u, wo->ourid, wo->hisid))
+ default_route_set[u] = 1;
- notice("ipv6_demand_conf");
notice("local LL address %s", llv6_ntoa(wo->ourid));
notice("remote LL address %s", llv6_ntoa(wo->hisid));
* Configure the IPv6 network interface appropriately and bring it up.
*/
static void
-ipv6cp_up(f)
- fsm *f;
+ipv6cp_up(fsm *f)
{
ipv6cp_options *ho = &ipv6cp_hisoptions[f->unit];
ipv6cp_options *go = &ipv6cp_gotoptions[f->unit];
if (! eui64_equals(ho->hisid, wo->hisid))
warn("Remote LL address changed to %s",
llv6_ntoa(ho->hisid));
- ipv6cp_clear_addrs(f->unit, go->ourid, ho->hisid);
+ ipv6cp_clear_addrs(f->unit, wo->ourid, wo->hisid);
/* Set the interface to the new addresses */
if (!sif6addr(f->unit, go->ourid, ho->hisid)) {
return;
}
+ /* assign a default route through the interface if required */
+ if (ipv6cp_wantoptions[f->unit].default_route)
+ if (sif6defaultroute(f->unit, go->ourid, ho->hisid))
+ default_route_set[f->unit] = 1;
}
demand_rexmit(PPP_IPV6);
sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS);
} else {
- /*
- * Set LL addresses
- */
-#if !defined(__linux__) && !defined(SOL2) && !(defined(SVR4) && (defined(SNI) || defined(__USLC__)))
- if (!sif6addr(f->unit, go->ourid, ho->hisid)) {
- if (debug)
- warn("sif6addr failed");
- ipv6cp_close(f->unit, "Interface configuration failed");
- return;
- }
-#endif
-
/* bring the interface up for IPv6 */
-#if defined(SOL2)
if (!sif6up(f->unit)) {
if (debug)
- warn("sifup failed (IPV6)");
- ipv6cp_close(f->unit, "Interface configuration failed");
- return;
- }
-#else
- if (!sifup(f->unit)) {
- if (debug)
- warn("sifup failed (IPV6)");
+ warn("sif6up failed (IPV6)");
ipv6cp_close(f->unit, "Interface configuration failed");
return;
}
-#endif /* defined(SOL2) */
-#if defined(__linux__) || defined(SOL2) || (defined(SVR4) && (defined(SNI) || defined(__USLC__)))
if (!sif6addr(f->unit, go->ourid, ho->hisid)) {
if (debug)
warn("sif6addr failed");
ipv6cp_close(f->unit, "Interface configuration failed");
return;
}
-#endif
sifnpmode(f->unit, PPP_IPV6, NPMODE_PASS);
+ /* assign a default route through the interface if required */
+ if (ipv6cp_wantoptions[f->unit].default_route)
+ if (sif6defaultroute(f->unit, go->ourid, ho->hisid))
+ default_route_set[f->unit] = 1;
+
notice("local LL address %s", llv6_ntoa(go->ourid));
notice("remote LL address %s", llv6_ntoa(ho->hisid));
}
np_up(f->unit, PPP_IPV6);
ipv6cp_is_up = 1;
+ notify(ipv6_up_notifier, 0);
+ if (ipv6_up_hook)
+ ipv6_up_hook();
+
/*
* Execute the ipv6-up script, like this:
* /etc/ppp/ipv6-up interface tty speed local-LL remote-LL
* and delete routes through it.
*/
static void
-ipv6cp_down(f)
- fsm *f;
+ipv6cp_down(fsm *f)
{
IPV6CPDEBUG(("ipv6cp: down"));
update_link_stats(f->unit);
+ notify(ipv6_down_notifier, 0);
+ if (ipv6_down_hook)
+ ipv6_down_hook();
if (ipv6cp_is_up) {
ipv6cp_is_up = 0;
np_down(f->unit, PPP_IPV6);
} else {
sifnpmode(f->unit, PPP_IPV6, NPMODE_DROP);
#if !defined(__linux__) && !(defined(SVR4) && (defined(SNI) || defined(__USLC)))
-#if defined(SOL2)
sif6down(f->unit);
-#else
- sifdown(f->unit);
-#endif /* defined(SOL2) */
#endif
ipv6cp_clear_addrs(f->unit,
ipv6cp_gotoptions[f->unit].ourid,
ipv6cp_hisoptions[f->unit].hisid);
-#if defined(__linux__) || (defined(SVR4) && (defined(SNI) || defined(__USLC)))
+#if defined(__linux__)
+ sif6down(f->unit);
+#elif defined(SVR4) && (defined(SNI) || defined(__USLC))
sifdown(f->unit);
#endif
}
* proxy neighbour discovery entries, etc.
*/
static void
-ipv6cp_clear_addrs(unit, ourid, hisid)
- int unit;
- eui64_t ourid;
- eui64_t hisid;
+ipv6cp_clear_addrs(int unit, eui64_t ourid, eui64_t hisid)
{
cif6addr(unit, ourid, hisid);
}
* ipv6cp_finished - possibly shut down the lower layers.
*/
static void
-ipv6cp_finished(f)
- fsm *f;
+ipv6cp_finished(fsm *f)
{
np_finished(f->unit, PPP_IPV6);
}
* has finished.
*/
static void
-ipv6cp_script_done(arg)
- void *arg;
+ipv6cp_script_done(void *arg)
{
ipv6cp_script_pid = 0;
switch (ipv6cp_script_state) {
* interface-name tty-name speed local-LL remote-LL.
*/
static void
-ipv6cp_script(script)
- char *script;
+ipv6cp_script(char *script)
{
char strspeed[32], strlocal[32], strremote[32];
char *argv[8];
argv[6] = ipparam;
argv[7] = NULL;
- ipv6cp_script_pid = run_program(script, argv, 0, ipv6cp_script_done, NULL);
+ ipv6cp_script_pid = run_program(script, argv, 0, ipv6cp_script_done,
+ NULL, 0);
}
/*
};
static int
-ipv6cp_printpkt(p, plen, printer, arg)
- u_char *p;
- int plen;
- void (*printer) __P((void *, char *, ...));
- void *arg;
+ipv6cp_printpkt(u_char *p, int plen,
+ void (*printer) (void *, char *, ...), void *arg)
{
int code, id, len, olen;
u_char *pstart, *optend;
*/
#define IP6_HDRLEN 40 /* bytes */
#define IP6_NHDR_FRAG 44 /* fragment IPv6 header */
-#define IPPROTO_TCP 6
#define TCP_HDRLEN 20
#define TH_FIN 0x01
#define get_tcpflags(x) (((unsigned char *)(x))[13])
static int
-ipv6_active_pkt(pkt, len)
- u_char *pkt;
- int len;
+ipv6_active_pkt(u_char *pkt, int len)
{
u_char *tcp;
projects / ppp.git / blobdiff