+--- a/pppd/main.c
++++ b/pppd/main.c
+@@ -742,8 +742,11 @@ 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 */
+@@ -264,6 +265,9 @@ 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.
+ */
+@@ -308,6 +312,7 @@ 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 +650,32 @@ 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;
++ } else {
++ info("Renamed %s to %s", ifr.ifr_name, ifr.ifr_newname);
++ }
++ }
++
+ return x;
+ }
+
+--- a/pppstats/pppstats.c
++++ b/pppstats/pppstats.c
+@@ -506,10 +506,12 @@ main(argc, argv)
+ if (argc > 0)
+ interface = argv[0];
+
++/*
+ if (sscanf(interface, PPP_DRV_NAME "%d", &unit) != 1) {
+ fprintf(stderr, "%s: invalid interface '%s' specified\n",
+ progname, interface);
+ }
++*/
+
+ #ifndef STREAMS
+ {
projects / openwrt.git / commitdiff