diff options
Diffstat (limited to 'package/network/services/ppp/patches/320-custom_iface_names.patch')
| -rw-r--r-- | package/network/services/ppp/patches/320-custom_iface_names.patch | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/package/network/services/ppp/patches/320-custom_iface_names.patch b/package/network/services/ppp/patches/320-custom_iface_names.patch new file mode 100644 index 0000000..ccda0c6 --- /dev/null +++ b/package/network/services/ppp/patches/320-custom_iface_names.patch @@ -0,0 +1,135 @@ +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 +@@ -112,6 +112,7 @@ 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 */ +@@ -277,6 +278,9 @@ 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 +@@ -74,6 +74,10 @@ + #include "eui64.h" + #endif + ++#ifndef IFNAMSIZ ++#define IFNAMSIZ 16 ++#endif ++ + /* + * Limits. + */ +@@ -317,6 +321,7 @@ 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 +@@ -161,6 +161,10 @@ 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 */ +@@ -620,7 +624,8 @@ 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?"); +@@ -643,6 +648,30 @@ 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 + { |