Code cleanup

Chacha20 will be automatically used if aesni is not available.

.build.sh

@@ -1,15 +0,0 @@
-#!/bin/sh
-
-export CC="gcc -static"
-
-git clone https://github.com/jedisct1/libsodium --depth=1 --branch stable
-cd libsodium || exit 1
-./autogen.sh && ./configure --enable-minimal --disable-shared --prefix=/usr && make install
-cd ..
-
-./autogen.sh && ./configure && make
-[ -x glorytun ] || exit 1
-
-mkdir -p deploy
-strip -s glorytun
-mv glorytun deploy/glorytun-$(cat VERSION)-$(uname -m).bin

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "mud"]
-	path = mud
-	url = https://github.com/angt/mud.git

Makefile.am

@@ -20,11 +20,6 @@ glorytun_SOURCES = \
     src/state.c \
     src/state.h
 
-glorytun_CFLAGS  += -I$(srcdir)/mud
-glorytun_SOURCES += \
-    mud/mud.h \
-    mud/mud.c
-
 EXTRA_DIST = \
     LICENSE \
     README.md \

README.md

@@ -1,6 +1,6 @@
 # π₁(Glorytun)=ℤ²
 
-Small, Simple and Stupid VPN over [mud](https://github.com/angt/mud).
+Small, Simple and Stupid TCP VPN.
 
 #### Work In Progress
 
@@ -8,12 +8,11 @@ This code will probably format your harddisk!
 
 #### Build and Install
 
-Glorytun depends on [libsodium](https://github.com/jedisct1/libsodium) version >= 1.0.4
+Glorytun depends on [libsodium](https://github.com/jedisct1/libsodium) version >= 1.0.4.
-and needs an AES-NI capable CPU.
 
 To build and install the latest version:
 
-    $ git clone https://github.com/angt/glorytun --recursive --branch mud
+    $ git clone https://github.com/angt/glorytun
     $ cd glorytun
     $ ./autogen.sh
     $ ./configure

configure.ac

@@ -14,9 +14,8 @@ AM_SILENT_RULES([yes])
 AM_PROG_CC_C_O
 AC_PROG_CC_C99
 AC_USE_SYSTEM_EXTENSIONS
+AC_SEARCH_LIBS([getaddrinfo], [resolv nsl])
 AC_SEARCH_LIBS([socket], [socket])
-AC_CHECK_LIB([rt], [clock_gettime])
-AC_CHECK_FUNCS([clock_gettime])
 PKG_CHECK_MODULES([libsodium], [libsodium >= 1.0.4])
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT

src/ip.h

@@ -4,7 +4,6 @@
 
 struct ip_common {
     uint8_t version;
-    uint8_t tc;
     uint8_t proto;
     uint8_t hdr_size;
     uint16_t size;
@@ -25,13 +24,11 @@ static inline int ip_get_common (struct ip_common *ic, const uint8_t *data, size
 
     switch (ic->version) {
     case 4:
-        ic->tc = data[1];
         ic->proto = data[9];
         ic->hdr_size = (data[0]&0xF)<<2;
         ic->size = ((data[2]<<8)|data[3]);
         return 0;
     case 6:
-        ic->tc = ((data[0]&0xF)<<4)|(data[1]>>4);
         ic->proto = data[6];
         ic->hdr_size = 40;
         ic->size = ((data[4]<<8)|data[5])+40;

src/tun.c

@@ -11,9 +11,8 @@
 #include <sys/socket.h>
 #include <sys/uio.h>
 
-#include <net/if.h>
-
 #ifdef __linux__
+#include <linux/if.h>
 #include <linux/if_tun.h>
 #endif
 
@@ -29,7 +28,7 @@
 
 #ifdef __APPLE__
 
-static int tun_create_by_id (char *name, size_t size, unsigned id)
+static int tun_create_by_id (char *name, size_t size, unsigned id, _unused_ int mq)
 {
     int fd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL);
 
@@ -64,21 +63,21 @@ static int tun_create_by_id (char *name, size_t size, unsigned id)
     return fd;
 }
 
-static int tun_create_by_name (char *name, size_t size, char *dev_name)
+static int tun_create_by_name (char *name, size_t size, char *dev_name, int mq)
 {
     unsigned id = 0;
 
     if (sscanf(dev_name, "utun%u", &id)!=1)
         return -1;
 
-    return tun_create_by_id(name, size, id);
+    return tun_create_by_id(name, size, id, mq);
 }
 
 #else /* not __APPLE__ */
 
 #ifdef __linux__
 
-static int tun_create_by_name (char *name, size_t size, char *dev_name)
+static int tun_create_by_name (char *name, size_t size, char *dev_name, int mq)
 {
     int fd = open("/dev/net/tun", O_RDWR);
 
@@ -89,6 +88,12 @@ static int tun_create_by_name (char *name, size_t size, char *dev_name)
         .ifr_flags = IFF_TUN|IFF_NO_PI,
     };
 
+    if (mq) {
+#ifdef IFF_MULTI_QUEUE
+        ifr.ifr_flags |= IFF_MULTI_QUEUE;
+#endif
+    }
+
     str_cpy(ifr.ifr_name, dev_name, IFNAMSIZ-1);
 
     if (ioctl(fd, TUNSETIFF, &ifr)) {
@@ -103,7 +108,7 @@ static int tun_create_by_name (char *name, size_t size, char *dev_name)
 
 #else /* not __linux__ not __APPLE__ */
 
-static int tun_create_by_name (char *name, size_t size, char *dev_name)
+static int tun_create_by_name (char *name, size_t size, char *dev_name, _unused_ int mq)
 {
     char path[64];
 
@@ -115,27 +120,32 @@ static int tun_create_by_name (char *name, size_t size, char *dev_name)
 
 #endif /* not __APPLE__ */
 
-static int tun_create_by_id (char *name, size_t size, unsigned id)
+static int tun_create_by_id (char *name, size_t size, unsigned id, int mq)
 {
     char dev_name[64];
 
     snprintf(dev_name, sizeof(dev_name), "tun%u", id);
 
-    return tun_create_by_name(name, size, dev_name);
+    return tun_create_by_name(name, size, dev_name, mq);
 }
 
 #endif
 
-int tun_create (char *dev_name, char **ret_name)
+int tun_create (char *dev_name, char **ret_name, int mq)
 {
     char name[64] = {0};
     int fd = -1;
 
+#ifndef IFF_MULTI_QUEUE
+    if (mq)
+        gt_na("IFF_MULTI_QUEUE");
+#endif
+
     if (str_empty(dev_name)) {
         for (unsigned id=0; id<32 && fd==-1; id++)
-            fd = tun_create_by_id(name, sizeof(name), id);
+            fd = tun_create_by_id(name, sizeof(name), id, mq);
     } else {
-        fd = tun_create_by_name(name, sizeof(name), dev_name);
+        fd = tun_create_by_name(name, sizeof(name), dev_name, mq);
     }
 
     if (fd!=-1 && ret_name)
@@ -230,25 +240,3 @@ ssize_t tun_write (int fd, const void *data, size_t size)
     return ret;
 #endif
 }
-
-int tun_set_mtu (char *dev_name, int mtu)
-{
-    struct ifreq ifr = {
-        .ifr_mtu = mtu,
-    };
-
-    str_cpy(ifr.ifr_name, dev_name, IFNAMSIZ-1);
-
-    int fd = socket(AF_INET, SOCK_DGRAM, 0);
-
-    if (fd==-1)
-        return -1;
-
-    int ret = ioctl(fd, SIOCSIFMTU, &ifr);
-
-    int err = errno;
-    close(fd);
-    errno = err;
-
-    return ret;
-}

src/tun.h

@@ -2,7 +2,6 @@
 
 #include <unistd.h>
 
-int     tun_create  (char *, char **);
+int     tun_create (char *, char **, int);
 ssize_t tun_read   (int, void *, size_t);
 ssize_t tun_write  (int, const void *, size_t);
-int     tun_set_mtu (char *, int);