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Force MTU sync

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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
This commit is contained in:
Adrien Gallouët
2020-01-04 16:15:18 +00:00
parent 23a5cdfe31
commit c536bef802
2 changed files with 12 additions and 8 deletions
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19
mud.c
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@@ -580,6 +580,7 @@ mud_reset_path(struct mud_path *path)
{
path->mtu.ok = 0;
path->mtu.probe = 0;
path->mtu.last = 0;
}
static struct mud_path *
@@ -1111,7 +1112,7 @@ mud_send_msg(struct mud *mud, struct mud_path *path, uint64_t now,
msg->aes = (unsigned char)mud->keyx.aes;
if (!path->mtu.probe)
MUD_STORE_MSG(msg->mtu, path->mtu.ok);
MUD_STORE_MSG(msg->mtu, path->mtu.last);
MUD_STORE_MSG(msg->tx.bytes, path->tx.bytes);
MUD_STORE_MSG(msg->rx.bytes, path->rx.bytes);
@@ -1217,7 +1218,7 @@ static void
mud_update_mtu(struct mud_path *path, size_t size)
{
if (!path->mtu.probe) {
if (!path->mtu.ok) {
if (!path->mtu.last) {
path->mtu.min = MUD_MTU_MIN;
path->mtu.max = MUD_MTU_MAX;
path->mtu.probe = MUD_MTU_MAX;
@@ -1229,7 +1230,7 @@ mud_update_mtu(struct mud_path *path, size_t size)
if (path->mtu.min > size || path->mtu.max < size)
return;
path->mtu.min = size + 1;
path->mtu.ok = size;
path->mtu.last = size;
} else {
path->mtu.max = path->mtu.probe - 1;
}
@@ -1286,14 +1287,18 @@ mud_recv_msg(struct mud *mud, struct mud_path *path,
path->rx.loss = (uint64_t)msg->loss;
path->msg.sent = 0;
if (mud->peer.set) {
mud_update_mtu(path, size);
if (path->mtu.last && path->mtu.last == MUD_LOAD_MSG(msg->mtu))
path->mtu.ok = path->mtu.last;
} else {
return;
}
} else {
path->state = (enum mud_state)msg->state;
path->mtu.ok = MUD_LOAD_MSG(msg->mtu);
path->mtu.last = MUD_LOAD_MSG(msg->mtu);
path->mtu.ok = path->mtu.last;
path->conf.msg_timeout = MUD_LOAD_MSG(msg->timeout);
const uint64_t max_rate = MUD_LOAD_MSG(msg->max_rate);
@@ -1438,9 +1443,7 @@ mud_update(struct mud *mud)
path->ok = 0;
count++;
int mtu_ok = path->mtu.ok && !path->mtu.probe;
if (mtu_ok) {
if (path->mtu.ok) {
if (!mtu || mtu > path->mtu.ok)
mtu = path->mtu.ok;
if (!mud->backup && path->state == MUD_BACKUP)
@@ -1454,7 +1457,7 @@ mud_update(struct mud *mud)
} else {
path->msg.sent = MUD_MSG_SENT_MAX;
}
} else if (mtu_ok && (mud->peer.set ||
} else if (path->mtu.ok && (mud->peer.set ||
!mud_timeout(mud->last_recv_time, path->rx.time,
MUD_MSG_SENT_MAX * path->conf.msg_timeout))) {
if (path->state != MUD_BACKUP)

1
mud.h
View File

@@ -49,6 +49,7 @@ struct mud_path {
size_t min;
size_t max;
size_t probe;
size_t last;
size_t ok;
} mtu;
struct {