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Don't modify mtu from mud_get_mtu()

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This commit is contained in:
Adrien Gallouët
2016-12-22 10:25:34 +00:00
parent f2ead2e4e2
commit 1dfe105bd0
1 changed files with 18 additions and 16 deletions
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34
src/main.c
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@@ -229,6 +229,22 @@ gt_setup_option(int argc, char **argv)
return 0; return 0;
} }
static void
gt_setup_mtu(struct mud *mud, char *tun_name)
{
int mtu = mud_get_mtu(mud);
if (mtu == (int)gt.mtu)
return;
gt.mtu = mtu;
gt_log("setup MTU to %i on interface %s\n", mtu, tun_name);
if (tun_set_mtu(tun_name, mtu) == -1)
perror("tun_set_mtu");
}
int int
main(int argc, char **argv) main(int argc, char **argv)
{ {
@@ -313,12 +329,7 @@ main(int argc, char **argv)
} }
} }
gt.mtu = GT_MTU(mud_get_mtu(mud)); gt_setup_mtu(mud, tun_name);
if (tun_set_mtu(tun_name, gt.mtu) == -1) {
perror("tun_set_mtu");
return 1;
}
int mud_fd = mud_get_fd(mud); int mud_fd = mud_get_fd(mud);
@@ -415,16 +426,7 @@ main(int argc, char **argv)
int r = mud_send(mud, &buf[p], q - p, tc); int r = mud_send(mud, &buf[p], q - p, tc);
if (r == -1 && errno == EMSGSIZE) { if (r == -1 && errno == EMSGSIZE) {
int mtu = GT_MTU(mud_get_mtu(mud)); gt_setup_mtu(mud, tun_name);
if (mtu != (int)gt.mtu) {
gt.mtu = mtu;
gt_log("setup MTU to %i on interface %s\n", mtu, tun_name);
if (tun_set_mtu(tun_name, mtu) == -1)
perror("tun_set_mtu");
}
} else { } else {
if (r == -1 && errno != EAGAIN) if (r == -1 && errno != EAGAIN)
perror("mud_send"); perror("mud_send");