diff options
Diffstat (limited to 'user/ppp/21_all_custom_iface_names.patch')
| -rw-r--r-- | user/ppp/21_all_custom_iface_names.patch | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/user/ppp/21_all_custom_iface_names.patch b/user/ppp/21_all_custom_iface_names.patch new file mode 100644 index 000000000..5d3f7b94b --- /dev/null +++ b/user/ppp/21_all_custom_iface_names.patch @@ -0,0 +1,144 @@ +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. + +Originally written by Suse. Used by openwrt, debian, ubuntu. + +Reference: + +https://dev.openwrt.org/browser/trunk/package/network/services/ppp/patches/320-custom_iface_names.patch + +diff -purN ppp-2.4.7.orig/pppd/main.c ppp-2.4.7/pppd/main.c +--- ppp-2.4.7.orig/pppd/main.c 2016-08-25 15:52:52.032202044 +0200 ++++ ppp-2.4.7/pppd/main.c 2016-08-25 16:22:25.740299940 +0200 +@@ -729,8 +729,11 @@ 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 */ +diff -purN ppp-2.4.7.orig/pppd/options.c ppp-2.4.7/pppd/options.c +--- ppp-2.4.7.orig/pppd/options.c 2016-08-25 15:52:52.191194523 +0200 ++++ ppp-2.4.7/pppd/options.c 2016-08-25 16:04:23.335501924 +0200 +@@ -115,6 +115,7 @@ 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 */ +@@ -274,6 +275,9 @@ 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", +diff -purN ppp-2.4.7.orig/pppd/pppd.h ppp-2.4.7/pppd/pppd.h +--- ppp-2.4.7.orig/pppd/pppd.h 2016-08-25 15:52:52.829164346 +0200 ++++ ppp-2.4.7/pppd/pppd.h 2016-08-25 16:07:12.024522417 +0200 +@@ -71,6 +71,10 @@ + #include "eui64.h" + #endif + ++#ifndef IFNAMSIZ ++#define IFNAMSIZ 16 ++#endif ++ + /* + * Limits. + */ +@@ -319,6 +323,7 @@ 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 */ +diff -purN ppp-2.4.7.orig/pppd/sys-linux.c ppp-2.4.7/pppd/sys-linux.c +--- ppp-2.4.7.orig/pppd/sys-linux.c 2016-08-25 15:52:52.268190881 +0200 ++++ ppp-2.4.7/pppd/sys-linux.c 2016-08-25 16:12:13.905242396 +0200 +@@ -172,6 +172,10 @@ 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 */ +@@ -644,7 +648,8 @@ 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?"); +@@ -667,6 +672,30 @@ 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; + } + +diff -purN ppp-2.4.7.orig/pppstats/pppstats.c ppp-2.4.7/pppstats/pppstats.c +--- ppp-2.4.7.orig/pppstats/pppstats.c 2014-08-09 14:31:39.000000000 +0200 ++++ ppp-2.4.7/pppstats/pppstats.c 2016-08-25 16:13:52.623572634 +0200 +@@ -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 + { |