mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 21:59:34 +02:00
5cae7371a7
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32463 3c298f89-4303-0410-b956-a3cf2f4a3e73
136 lines
4.2 KiB
Diff
136 lines
4.2 KiB
Diff
pppd: Support arbitrary interface names
|
|
|
|
This patch implements a new string option "ifname" which allows to specify
|
|
fully custom PPP interface names on Linux. It does so by renaming the
|
|
allocated pppX device immediately after it has been created to the requested
|
|
interface name.
|
|
|
|
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
|
|
|
|
--- a/pppd/main.c
|
|
+++ b/pppd/main.c
|
|
@@ -745,8 +745,11 @@ void
|
|
set_ifunit(iskey)
|
|
int iskey;
|
|
{
|
|
- info("Using interface %s%d", PPP_DRV_NAME, ifunit);
|
|
- slprintf(ifname, sizeof(ifname), "%s%d", PPP_DRV_NAME, ifunit);
|
|
+ if (use_ifname[0] == 0)
|
|
+ slprintf(ifname, sizeof(ifname), "%s%d", PPP_DRV_NAME, ifunit);
|
|
+ else
|
|
+ slprintf(ifname, sizeof(ifname), "%s", use_ifname);
|
|
+ info("Using interface %s", ifname);
|
|
script_setenv("IFNAME", ifname, iskey);
|
|
if (iskey) {
|
|
create_pidfile(getpid()); /* write pid to file */
|
|
--- a/pppd/options.c
|
|
+++ b/pppd/options.c
|
|
@@ -111,6 +111,7 @@ int log_to_fd = 1; /* send log messages
|
|
bool log_default = 1; /* log_to_fd is default (stdout) */
|
|
int maxfail = 10; /* max # of unsuccessful connection attempts */
|
|
char linkname[MAXPATHLEN]; /* logical name for link */
|
|
+char use_ifname[IFNAMSIZ]; /* physical name for PPP link */
|
|
bool tune_kernel; /* may alter kernel settings */
|
|
int connect_delay = 1000; /* wait this many ms after connect script */
|
|
int req_unit = -1; /* requested interface unit */
|
|
@@ -266,6 +267,9 @@ option_t general_options[] = {
|
|
{ "linkname", o_string, linkname,
|
|
"Set logical name for link",
|
|
OPT_PRIO | OPT_PRIV | OPT_STATIC, NULL, MAXPATHLEN },
|
|
+ { "ifname", o_string, use_ifname,
|
|
+ "Set physical name for PPP interface",
|
|
+ OPT_PRIO | OPT_PRIV | OPT_STATIC, NULL, IFNAMSIZ },
|
|
|
|
{ "maxfail", o_int, &maxfail,
|
|
"Maximum number of unsuccessful connection attempts to allow",
|
|
--- a/pppd/pppd.h
|
|
+++ b/pppd/pppd.h
|
|
@@ -71,6 +71,10 @@
|
|
#include "eui64.h"
|
|
#endif
|
|
|
|
+#ifndef IFNAMSIZ
|
|
+#define IFNAMSIZ 16
|
|
+#endif
|
|
+
|
|
/*
|
|
* Limits.
|
|
*/
|
|
@@ -309,6 +313,7 @@ extern char *record_file; /* File to rec
|
|
extern bool sync_serial; /* Device is synchronous serial device */
|
|
extern int maxfail; /* Max # of unsuccessful connection attempts */
|
|
extern char linkname[MAXPATHLEN]; /* logical name for link */
|
|
+extern char use_ifname[IFNAMSIZ]; /* physical name for PPP interface */
|
|
extern bool tune_kernel; /* May alter kernel settings as necessary */
|
|
extern int connect_delay; /* Time to delay after connect script */
|
|
extern int max_data_rate; /* max bytes/sec through charshunt */
|
|
--- a/pppd/sys-linux.c
|
|
+++ b/pppd/sys-linux.c
|
|
@@ -168,6 +168,10 @@ struct in6_ifreq {
|
|
/* We can get an EIO error on an ioctl if the modem has hung up */
|
|
#define ok_error(num) ((num)==EIO)
|
|
|
|
+#if !defined(PPP_DRV_NAME)
|
|
+#define PPP_DRV_NAME "ppp"
|
|
+#endif /* !defined(PPP_DRV_NAME) */
|
|
+
|
|
static int tty_disc = N_TTY; /* The TTY discipline */
|
|
static int ppp_disc = N_PPP; /* The PPP discpline */
|
|
static int initfdflags = -1; /* Initial file descriptor flags for fd */
|
|
@@ -622,7 +626,8 @@ void generic_disestablish_ppp(int dev_fd
|
|
*/
|
|
static int make_ppp_unit()
|
|
{
|
|
- int x, flags;
|
|
+ struct ifreq ifr;
|
|
+ int x, flags, s;
|
|
|
|
if (ppp_dev_fd >= 0) {
|
|
dbglog("in make_ppp_unit, already had /dev/ppp open?");
|
|
@@ -645,6 +650,30 @@ static int make_ppp_unit()
|
|
}
|
|
if (x < 0)
|
|
error("Couldn't create new ppp unit: %m");
|
|
+
|
|
+ if (use_ifname[0] != 0) {
|
|
+ s = socket(PF_INET, SOCK_DGRAM, 0);
|
|
+ if (s < 0)
|
|
+ s = socket(PF_PACKET, SOCK_DGRAM, 0);
|
|
+ if (s < 0)
|
|
+ s = socket(PF_INET6, SOCK_DGRAM, 0);
|
|
+ if (s < 0)
|
|
+ s = socket(PF_UNIX, SOCK_DGRAM, 0);
|
|
+ if (s >= 0) {
|
|
+ slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s%d", PPP_DRV_NAME, ifunit);
|
|
+ slprintf(ifr.ifr_newname, sizeof(ifr.ifr_newname), "%s", use_ifname);
|
|
+ x = ioctl(s, SIOCSIFNAME, &ifr);
|
|
+ close(s);
|
|
+ } else {
|
|
+ x = s;
|
|
+ }
|
|
+ if (x < 0) {
|
|
+ error("Couldn't rename %s to %s", ifr.ifr_name, ifr.ifr_newname);
|
|
+ close(ppp_dev_fd);
|
|
+ ppp_dev_fd = -1;
|
|
+ }
|
|
+ }
|
|
+
|
|
return x;
|
|
}
|
|
|
|
--- a/pppstats/pppstats.c
|
|
+++ b/pppstats/pppstats.c
|
|
@@ -506,10 +506,12 @@ main(argc, argv)
|
|
if (argc > 0)
|
|
interface = argv[0];
|
|
|
|
+#if 0
|
|
if (sscanf(interface, PPP_DRV_NAME "%d", &unit) != 1) {
|
|
fprintf(stderr, "%s: invalid interface '%s' specified\n",
|
|
progname, interface);
|
|
}
|
|
+#endif
|
|
|
|
#ifndef STREAMS
|
|
{
|