summaryrefslogtreecommitdiffstats
path: root/src/tuntap.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/tuntap.c')
-rw-r--r--src/tuntap.c172
1 files changed, 86 insertions, 86 deletions
diff --git a/src/tuntap.c b/src/tuntap.c
index 0fc17a3..e5c0471 100644
--- a/src/tuntap.c
+++ b/src/tuntap.c
@@ -56,13 +56,13 @@ static const bool multiaf_tun = true;
#if defined(__linux__)
-void fastd_tuntap_open(fastd_context_t *ctx) {
+void fastd_tuntap_open(void) {
struct ifreq ifr = {};
- pr_debug(ctx, "initializing tun/tap device...");
+ pr_debug("initializing tun/tap device...");
- if ((ctx->tunfd = open("/dev/net/tun", O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
- exit_errno(ctx, "could not open tun/tap device file");
+ if ((ctx.tunfd = open("/dev/net/tun", O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
+ exit_errno("could not open tun/tap device file");
if (conf.ifname)
strncpy(ifr.ifr_name, conf.ifname, IFNAMSIZ-1);
@@ -77,87 +77,87 @@ void fastd_tuntap_open(fastd_context_t *ctx) {
break;
default:
- exit_bug(ctx, "invalid mode");
+ exit_bug("invalid mode");
}
ifr.ifr_flags |= IFF_NO_PI;
- if (ioctl(ctx->tunfd, TUNSETIFF, &ifr) < 0)
- exit_errno(ctx, "TUNSETIFF ioctl failed");
+ if (ioctl(ctx.tunfd, TUNSETIFF, &ifr) < 0)
+ exit_errno("TUNSETIFF ioctl failed");
- ctx->ifname = strndup(ifr.ifr_name, IFNAMSIZ-1);
+ ctx.ifname = strndup(ifr.ifr_name, IFNAMSIZ-1);
int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (ctl_sock < 0)
- exit_errno(ctx, "socket");
+ exit_errno("socket");
if (ioctl(ctl_sock, SIOCGIFMTU, &ifr) < 0)
- exit_errno(ctx, "SIOCGIFMTU ioctl failed");
+ exit_errno("SIOCGIFMTU ioctl failed");
if (ifr.ifr_mtu != conf.mtu) {
ifr.ifr_mtu = conf.mtu;
if (ioctl(ctl_sock, SIOCSIFMTU, &ifr) < 0)
- exit_errno(ctx, "SIOCSIFMTU ioctl failed");
+ exit_errno("SIOCSIFMTU ioctl failed");
}
if (close(ctl_sock))
- pr_error_errno(ctx, "close");
+ pr_error_errno("close");
- fastd_poll_set_fd_tuntap(ctx);
+ fastd_poll_set_fd_tuntap();
- pr_debug(ctx, "tun/tap device initialized.");
+ pr_debug("tun/tap device initialized.");
}
#elif defined(__FreeBSD__) || defined(__OpenBSD__)
-static void set_tun_mtu(fastd_context_t *ctx) {
+static void set_tun_mtu(void) {
struct tuninfo tuninfo;
- if (ioctl(ctx->tunfd, TUNGIFINFO, &tuninfo) < 0)
- exit_errno(ctx, "TUNGIFINFO ioctl failed");
+ if (ioctl(ctx.tunfd, TUNGIFINFO, &tuninfo) < 0)
+ exit_errno("TUNGIFINFO ioctl failed");
tuninfo.mtu = conf.mtu;
- if (ioctl(ctx->tunfd, TUNSIFINFO, &tuninfo) < 0)
- exit_errno(ctx, "TUNSIFINFO ioctl failed");
+ if (ioctl(ctx.tunfd, TUNSIFINFO, &tuninfo) < 0)
+ exit_errno("TUNSIFINFO ioctl failed");
}
#ifdef __FreeBSD__
-static void set_tap_mtu(fastd_context_t *ctx) {
+static void set_tap_mtu(void) {
struct tapinfo tapinfo;
- if (ioctl(ctx->tunfd, TAPGIFINFO, &tapinfo) < 0)
- exit_errno(ctx, "TAPGIFINFO ioctl failed");
+ if (ioctl(ctx.tunfd, TAPGIFINFO, &tapinfo) < 0)
+ exit_errno("TAPGIFINFO ioctl failed");
tapinfo.mtu = conf.mtu;
- if (ioctl(ctx->tunfd, TAPSIFINFO, &tapinfo) < 0)
- exit_errno(ctx, "TAPSIFINFO ioctl failed");
+ if (ioctl(ctx.tunfd, TAPSIFINFO, &tapinfo) < 0)
+ exit_errno("TAPSIFINFO ioctl failed");
}
-static void setup_tun(fastd_context_t *ctx) {
+static void setup_tun(void) {
int one = 1;
- if (ioctl(ctx->tunfd, TUNSIFHEAD, &one) < 0)
- exit_errno(ctx, "TUNSIFHEAD ioctl failed");
+ if (ioctl(ctx.tunfd, TUNSIFHEAD, &one) < 0)
+ exit_errno("TUNSIFHEAD ioctl failed");
- set_tun_mtu(ctx);
+ set_tun_mtu();
}
-static void setup_tap(fastd_context_t *ctx) {
+static void setup_tap(void) {
struct ifreq ifr = {};
- if (ioctl(ctx->tunfd, TAPGIFNAME, &ifr) < 0)
- exit_errno(ctx, "TAPGIFNAME ioctl failed");
+ if (ioctl(ctx.tunfd, TAPGIFNAME, &ifr) < 0)
+ exit_errno("TAPGIFNAME ioctl failed");
- free(ctx->ifname);
- ctx->ifname = strndup(ifr.ifr_name, IFNAMSIZ-1);
+ free(ctx.ifname);
+ ctx.ifname = strndup(ifr.ifr_name, IFNAMSIZ-1);
- set_tap_mtu(ctx);
+ set_tap_mtu();
}
-void fastd_tuntap_open(fastd_context_t *ctx) {
- pr_debug(ctx, "initializing tun/tap device...");
+void fastd_tuntap_open(void) {
+ pr_debug("initializing tun/tap device...");
char ifname[5+IFNAMSIZ] = "/dev/";
const char *type;
@@ -172,12 +172,12 @@ void fastd_tuntap_open(fastd_context_t *ctx) {
break;
default:
- exit_bug(ctx, "invalid mode");
+ exit_bug("invalid mode");
}
if (conf.ifname) {
if (strncmp(conf.ifname, type, 3) != 0)
- exit_error(ctx, "`%s' doesn't seem to be a %s device", conf.ifname, type);
+ exit_error("`%s' doesn't seem to be a %s device", conf.ifname, type);
strncat(ifname, conf.ifname, IFNAMSIZ-1);
}
@@ -185,42 +185,42 @@ void fastd_tuntap_open(fastd_context_t *ctx) {
strncat(ifname, type, IFNAMSIZ-1);
}
- if ((ctx->tunfd = open(ifname, O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
- exit_errno(ctx, "could not open tun/tap device file");
+ if ((ctx.tunfd = open(ifname, O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
+ exit_errno("could not open tun/tap device file");
- if (!(ctx->ifname = fdevname_r(ctx->tunfd, malloc(IFNAMSIZ), IFNAMSIZ)))
- exit_errno(ctx, "could not get tun/tap interface name");
+ if (!(ctx.ifname = fdevname_r(ctx.tunfd, malloc(IFNAMSIZ), IFNAMSIZ)))
+ exit_errno("could not get tun/tap interface name");
switch (conf.mode) {
case MODE_TAP:
- setup_tap(ctx);
+ setup_tap();
break;
case MODE_TUN:
- setup_tun(ctx);
+ setup_tun();
break;
default:
- exit_bug(ctx, "invalid mode");
+ exit_bug("invalid mode");
}
- fastd_poll_set_fd_tuntap(ctx);
+ fastd_poll_set_fd_tuntap();
- pr_debug(ctx, "tun/tap device initialized.");
+ pr_debug("tun/tap device initialized.");
}
#else /* __OpenBSD__ */
-static void set_link0(fastd_context_t *ctx, bool set) {
+static void set_link0(bool set) {
struct ifreq ifr = {};
int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (ctl_sock < 0)
- exit_errno(ctx, "socket");
+ exit_errno("socket");
- strncpy(ifr.ifr_name, ctx->ifname, IFNAMSIZ-1);
+ strncpy(ifr.ifr_name, ctx.ifname, IFNAMSIZ-1);
if (ioctl(ctl_sock, SIOCGIFFLAGS, &ifr) < 0)
- exit_errno(ctx, "SIOCGIFFLAGS ioctl failed");
+ exit_errno("SIOCGIFFLAGS ioctl failed");
if (set)
ifr.ifr_flags |= IFF_LINK0;
@@ -228,54 +228,54 @@ static void set_link0(fastd_context_t *ctx, bool set) {
ifr.ifr_flags &= ~IFF_LINK0;
if (ioctl(ctl_sock, SIOCSIFFLAGS, &ifr) < 0)
- exit_errno(ctx, "SIOCSIFFLAGS ioctl failed");
+ exit_errno("SIOCSIFFLAGS ioctl failed");
if (close(ctl_sock))
- pr_error_errno(ctx, "close");
+ pr_error_errno("close");
}
-static void setup_tun(fastd_context_t *ctx) {
- set_link0(ctx, false);
- set_tun_mtu(ctx);
+static void setup_tun(void) {
+ set_link0(false);
+ set_tun_mtu();
}
-static void setup_tap(fastd_context_t *ctx) {
- set_link0(ctx, true);
- set_tun_mtu(ctx);
+static void setup_tap(void) {
+ set_link0(true);
+ set_tun_mtu();
}
-void fastd_tuntap_open(fastd_context_t *ctx) {
+void fastd_tuntap_open(void) {
char ifname[5+IFNAMSIZ] = "/dev/";
if (!conf.ifname)
- exit_error(ctx, "config error: no interface name given.");
+ exit_error("config error: no interface name given.");
else if (strncmp(conf.ifname, "tun", 3) != 0)
- exit_error(ctx, "config error: `%s' doesn't seem to be a tun device", conf.ifname);
+ exit_error("config error: `%s' doesn't seem to be a tun device", conf.ifname);
else
strncat(ifname, conf.ifname, IFNAMSIZ-1);
- pr_debug(ctx, "initializing tun device...");
+ pr_debug("initializing tun device...");
- if ((ctx->tunfd = open(ifname, O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
- exit_errno(ctx, "could not open tun device file");
+ if ((ctx.tunfd = open(ifname, O_RDWR|O_CLOEXEC|O_NONBLOCK)) < 0)
+ exit_errno("could not open tun device file");
- ctx->ifname = strndup(conf.ifname, IFNAMSIZ-1);
+ ctx.ifname = strndup(conf.ifname, IFNAMSIZ-1);
switch (conf.mode) {
case MODE_TAP:
- setup_tap(ctx);
+ setup_tap();
break;
case MODE_TUN:
- setup_tun(ctx);
+ setup_tun();
break;
default:
- exit_bug(ctx, "invalid mode");
+ exit_bug("invalid mode");
}
- fastd_poll_set_fd_tuntap(ctx);
+ fastd_poll_set_fd_tuntap();
- pr_debug(ctx, "tun device initialized.");
+ pr_debug("tun device initialized.");
}
#endif
@@ -287,34 +287,34 @@ void fastd_tuntap_open(fastd_context_t *ctx) {
#endif
-fastd_buffer_t fastd_tuntap_read(fastd_context_t *ctx) {
- size_t max_len = fastd_max_inner_packet(ctx);
+fastd_buffer_t fastd_tuntap_read(void) {
+ size_t max_len = fastd_max_inner_packet();
fastd_buffer_t buffer;
if (multiaf_tun && conf.mode == MODE_TUN)
- buffer = fastd_buffer_alloc(ctx, max_len+4, conf.min_encrypt_head_space+12, conf.min_encrypt_tail_space);
+ buffer = fastd_buffer_alloc(max_len+4, conf.min_encrypt_head_space+12, conf.min_encrypt_tail_space);
else
- buffer = fastd_buffer_alloc(ctx, max_len, conf.min_encrypt_head_space, conf.min_encrypt_tail_space);
+ buffer = fastd_buffer_alloc(max_len, conf.min_encrypt_head_space, conf.min_encrypt_tail_space);
- ssize_t len = read(ctx->tunfd, buffer.data, max_len);
+ ssize_t len = read(ctx.tunfd, buffer.data, max_len);
if (len < 0) {
if (errno == EINTR) {
fastd_buffer_free(buffer);
return (fastd_buffer_t){};
}
- exit_errno(ctx, "read");
+ exit_errno("read");
}
buffer.len = len;
if (multiaf_tun && conf.mode == MODE_TUN)
- fastd_buffer_push_head(ctx, &buffer, 4);
+ fastd_buffer_push_head(&buffer, 4);
return buffer;
}
-void fastd_tuntap_write(fastd_context_t *ctx, fastd_buffer_t buffer) {
+void fastd_tuntap_write(fastd_buffer_t buffer) {
if (multiaf_tun && conf.mode == MODE_TUN) {
uint8_t version = *((uint8_t*)buffer.data) >> 4;
uint32_t af;
@@ -329,19 +329,19 @@ void fastd_tuntap_write(fastd_context_t *ctx, fastd_buffer_t buffer) {
break;
default:
- pr_warn(ctx, "fastd_tuntap_write: unknown IP version %u", version);
+ pr_warn("fastd_tuntap_write: unknown IP version %u", version);
return;
}
- fastd_buffer_pull_head(ctx, &buffer, 4);
+ fastd_buffer_pull_head(&buffer, 4);
memcpy(buffer.data, &af, 4);
}
- if (write(ctx->tunfd, buffer.data, buffer.len) < 0)
- pr_warn_errno(ctx, "write");
+ if (write(ctx.tunfd, buffer.data, buffer.len) < 0)
+ pr_warn_errno("write");
}
-void fastd_tuntap_close(fastd_context_t *ctx) {
- if (close(ctx->tunfd))
- pr_warn_errno(ctx, "closing tun/tap: close");
+void fastd_tuntap_close(void) {
+ if (close(ctx.tunfd))
+ pr_warn_errno("closing tun/tap: close");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 04:44:12 +0100