diff options
Diffstat (limited to 'user/ppp/06_all_killaddr-smarter.patch')
| -rw-r--r-- | user/ppp/06_all_killaddr-smarter.patch | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/user/ppp/06_all_killaddr-smarter.patch b/user/ppp/06_all_killaddr-smarter.patch new file mode 100644 index 000000000..d86534843 --- /dev/null +++ b/user/ppp/06_all_killaddr-smarter.patch @@ -0,0 +1,131 @@ +--- ppp-2.4.5/pppd/options.c ++++ ppp-2.4.5/pppd/options.c +@@ -100,6 +100,9 @@ + char user[MAXNAMELEN]; /* Username for PAP */ + char passwd[MAXSECRETLEN]; /* Password for PAP */ + bool persist = 0; /* Reopen link after it goes down */ ++bool killoldaddr = 0; /* If our IP is reassigned on ++ reconnect, kill active TCP ++ connections using the old IP. */ + char our_name[MAXNAMELEN]; /* Our name for authentication purposes */ + bool demand = 0; /* do dial-on-demand */ + char *ipparam = NULL; /* Extra parameter for ip up/down scripts */ +@@ -231,6 +234,11 @@ + { "demand", o_bool, &demand, + "Dial on demand", OPT_INITONLY | 1, &persist }, + ++ { "killoldaddr", o_bool, &killoldaddr, ++ "Kill connections from an old source address", 1}, ++ { "nokilloldaddr", o_bool,&killoldaddr, ++ "Don't kill connections from an old source address" }, ++ + { "--version", o_special_noarg, (void *)showversion, + "Show version number" }, + { "--help", o_special_noarg, (void *)showhelp, +--- ppp-2.4.5/pppd/pppd.h ++++ ppp-2.4.5/pppd/pppd.h +@@ -298,6 +298,9 @@ + extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ + extern bool explicit_remote;/* remote_name specified with remotename opt */ + extern bool demand; /* Do dial-on-demand */ ++extern bool killoldaddr; /* If our IP is reassigned on ++ reconnect, kill active TCP ++ connections using the old IP. */ + extern char *ipparam; /* Extra parameter for ip up/down scripts */ + extern bool cryptpap; /* Others' PAP passwords are encrypted */ + extern int idle_time_limit;/* Shut down link if idle for this long */ +--- ppp-2.4.5/pppd/sys-linux.c ++++ ppp-2.4.5/pppd/sys-linux.c +@@ -165,6 +165,10 @@ + + #endif /* INET6 */ + ++#ifndef SIOCKILLADDR ++#define SIOCKILLADDR 0x8939 ++#endif ++ + /* We can get an EIO error on an ioctl if the modem has hung up */ + #define ok_error(num) ((num)==EIO) + +@@ -209,6 +213,7 @@ + static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ + static char proxy_arp_dev[16]; /* Device for proxy arp entry */ + static u_int32_t our_old_addr; /* for detecting address changes */ ++static u_int32_t our_current_addr; + static int dynaddr_set; /* 1 if ip_dynaddr set */ + static int looped; /* 1 if using loop */ + static int link_mtu; /* mtu for the link (not bundle) */ +@@ -537,6 +542,27 @@ + return -1; + } + ++static void do_killaddr(u_int32_t oldaddr) ++{ ++ struct ifreq ifr; ++ ++ memset(&ifr,0,sizeof ifr); ++ ++ SET_SA_FAMILY (ifr.ifr_addr, AF_INET); ++ SET_SA_FAMILY (ifr.ifr_dstaddr, AF_INET); ++ SET_SA_FAMILY (ifr.ifr_netmask, AF_INET); ++ ++ SIN_ADDR(ifr.ifr_addr) = oldaddr; ++ ++ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); ++ ++ if(ioctl(sock_fd,SIOCKILLADDR,&ifr) < 0) { ++ if (!ok_error (errno)) ++ error("ioctl(SIOCKILLADDR): %m(%d)", errno); ++ return; ++ } ++} ++ + /******************************************************************** + * + * tty_disestablish_ppp - Restore the serial port to normal operation. +@@ -2385,21 +2411,29 @@ + } + } + +- /* set ip_dynaddr in demand mode if address changes */ +- if (demand && tune_kernel && !dynaddr_set +- && our_old_addr && our_old_addr != our_adr) { ++ if(persist && our_old_addr && our_old_addr != our_adr) { ++ ++ if(killoldaddr) ++ do_killaddr(our_old_addr); ++ ++ ++ /* set ip_dynaddr in persist mode if address changes */ ++ if (tune_kernel && !dynaddr_set) { + /* set ip_dynaddr if possible */ + char *path; + int fd; + + path = path_to_procfs("/sys/net/ipv4/ip_dynaddr"); + if (path != 0 && (fd = open(path, O_WRONLY)) >= 0) { +- if (write(fd, "1", 1) != 1) +- error("Couldn't enable dynamic IP addressing: %m"); +- close(fd); ++ if (write(fd, "1", 1) != 1) ++ error("Couldn't enable dynamic IP addressing: %m"); ++ close(fd); + } + dynaddr_set = 1; /* only 1 attempt */ ++ } + } ++ ++ our_current_addr = our_adr; + our_old_addr = 0; + + return 1; +@@ -2455,7 +2489,8 @@ + } + + our_old_addr = our_adr; +- ++ our_current_addr = 0; ++ + return 1; + } + |