drbd: Change how the "handshake" packets are called
Packets of type P_HAND_SHAKE define which protocol versions and features
a node supports. For clarity, call those packets P_CONNECTION_FEATURES
instead.
(This does not determine the features that a specific drbd device
supports, such as drbd protocol A, B, C.)
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 089c168..d886dc1 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -235,7 +235,7 @@
P_INITIAL_META = 0xfff1, /* First Packet on the MetaSock */
P_INITIAL_DATA = 0xfff2, /* First Packet on the Socket */
- P_HAND_SHAKE = 0xfffe /* FIXED for the next century! */
+ P_CONNECTION_FEATURES = 0xfffe /* FIXED for the next century! */
};
extern const char *cmdname(enum drbd_packet cmd);
@@ -374,14 +374,14 @@
/*
* commands with their own struct for additional fields:
- * P_HAND_SHAKE
+ * P_CONNECTION_FEATURES
* P_BARRIER
* P_BARRIER_ACK
* P_SYNC_PARAM
* ReportParams
*/
-struct p_handshake {
+struct p_connection_features {
struct p_header head; /* Note: vnr will be ignored */
u32 protocol_min;
u32 feature_flags;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index a991d1c..71e3470 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2497,7 +2497,7 @@
int err;
BUILD_BUG_ON(sizeof(struct p_header80) != sizeof(struct p_header95));
- BUILD_BUG_ON(sizeof(struct p_handshake) != 80);
+ BUILD_BUG_ON(sizeof(struct p_connection_features) != 80);
if (minor_count < DRBD_MINOR_COUNT_MIN || minor_count > DRBD_MINOR_COUNT_MAX) {
printk(KERN_ERR
@@ -3149,8 +3149,8 @@
return "InitialMeta";
if (cmd == P_INITIAL_DATA)
return "InitialData";
- if (cmd == P_HAND_SHAKE)
- return "HandShake";
+ if (cmd == P_CONNECTION_FEATURES)
+ return "ConnectionFeatures";
if (cmd >= ARRAY_SIZE(cmdnames))
return "Unknown";
return cmdnames[cmd];
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index a5bf2b5..e52ae9b 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -60,7 +60,7 @@
FE_RECYCLED,
};
-static int drbd_do_handshake(struct drbd_tconn *tconn);
+static int drbd_do_features(struct drbd_tconn *tconn);
static int drbd_do_auth(struct drbd_tconn *tconn);
static int drbd_disconnected(int vnr, void *p, void *data);
@@ -913,7 +913,7 @@
/* NOT YET ...
* sock->sk->sk_sndtimeo = tconn->net_conf->timeout*HZ/10;
* sock->sk->sk_rcvtimeo = MAX_SCHEDULE_TIMEOUT;
- * first set it to the P_HAND_SHAKE timeout,
+ * first set it to the P_CONNECTION_FEATURES timeout,
* which we set to 4x the configured ping_timeout. */
sock->sk->sk_sndtimeo =
sock->sk->sk_rcvtimeo = tconn->net_conf->ping_timeo*4*HZ/10;
@@ -928,7 +928,7 @@
tconn->last_received = jiffies;
- h = drbd_do_handshake(tconn);
+ h = drbd_do_features(tconn);
if (h <= 0)
return h;
@@ -4176,10 +4176,10 @@
*
* for now, they are expected to be zero, but ignored.
*/
-static int drbd_send_handshake(struct drbd_tconn *tconn)
+static int drbd_send_features(struct drbd_tconn *tconn)
{
/* ASSERT current == mdev->tconn->receiver ... */
- struct p_handshake *p = tconn->data.sbuf;
+ struct p_connection_features *p = tconn->data.sbuf;
int err;
if (mutex_lock_interruptible(&tconn->data.mutex)) {
@@ -4195,7 +4195,7 @@
memset(p, 0, sizeof(*p));
p->protocol_min = cpu_to_be32(PRO_VERSION_MIN);
p->protocol_max = cpu_to_be32(PRO_VERSION_MAX);
- err = _conn_send_cmd(tconn, 0, &tconn->data, P_HAND_SHAKE,
+ err = _conn_send_cmd(tconn, 0, &tconn->data, P_CONNECTION_FEATURES,
&p->head, sizeof(*p), 0);
mutex_unlock(&tconn->data.mutex);
return err;
@@ -4208,15 +4208,15 @@
* -1 peer talks different language,
* no point in trying again, please go standalone.
*/
-static int drbd_do_handshake(struct drbd_tconn *tconn)
+static int drbd_do_features(struct drbd_tconn *tconn)
{
/* ASSERT current == tconn->receiver ... */
- struct p_handshake *p = tconn->data.rbuf;
- const int expect = sizeof(struct p_handshake) - sizeof(struct p_header80);
+ struct p_connection_features *p = tconn->data.rbuf;
+ const int expect = sizeof(struct p_connection_features) - sizeof(struct p_header80);
struct packet_info pi;
int err;
- err = drbd_send_handshake(tconn);
+ err = drbd_send_features(tconn);
if (err)
return 0;
@@ -4224,14 +4224,14 @@
if (err)
return 0;
- if (pi.cmd != P_HAND_SHAKE) {
- conn_err(tconn, "expected HandShake packet, received: %s (0x%04x)\n",
+ if (pi.cmd != P_CONNECTION_FEATURES) {
+ conn_err(tconn, "expected ConnectionFeatures packet, received: %s (0x%04x)\n",
cmdname(pi.cmd), pi.cmd);
return -1;
}
if (pi.size != expect) {
- conn_err(tconn, "expected HandShake length: %u, received: %u\n",
+ conn_err(tconn, "expected ConnectionFeatures length: %u, received: %u\n",
expect, pi.size);
return -1;
}