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Subject[PATCH 07/54] drbd: Get rid of USE_DATA_SOCKET and USE_META_SOCKET
Date
From: Andreas Gruenbacher <agruen@linbit.com>

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
drivers/block/drbd/drbd_int.h | 14 +++++-------
drivers/block/drbd/drbd_main.c | 46 ++++++++++++++--------------------------
2 files changed, 22 insertions(+), 38 deletions(-)
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index e7fa168..8663a1d 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1176,12 +1176,10 @@ extern int drbd_send_state(struct drbd_conf *mdev);
extern int _conn_send_cmd(struct drbd_tconn *tconn, int vnr, struct socket *sock,
enum drbd_packet cmd, struct p_header *h, size_t size,
unsigned msg_flags);
-extern int conn_send_cmd(struct drbd_tconn *tconn, int vnr, int use_data_socket,
+extern int conn_send_cmd(struct drbd_tconn *tconn, int vnr, struct drbd_socket *sock,
enum drbd_packet cmd, struct p_header *h, size_t size);
extern int conn_send_cmd2(struct drbd_tconn *tconn, enum drbd_packet cmd,
char *data, size_t size);
-#define USE_DATA_SOCKET 1
-#define USE_META_SOCKET 0
extern int drbd_send_sync_param(struct drbd_conf *mdev);
extern int drbd_send_b_ack(struct drbd_conf *mdev, u32 barrier_nr,
u32 set_size);
@@ -1929,29 +1927,29 @@ static inline int _drbd_send_cmd(struct drbd_conf *mdev, struct socket *sock,
return _conn_send_cmd(mdev->tconn, mdev->vnr, sock, cmd, h, size, msg_flags);
}

-static inline int drbd_send_cmd(struct drbd_conf *mdev, int use_data_socket,
+static inline int drbd_send_cmd(struct drbd_conf *mdev, struct drbd_socket *sock,
enum drbd_packet cmd, struct p_header *h, size_t size)
{
- return !conn_send_cmd(mdev->tconn, mdev->vnr, use_data_socket, cmd, h, size);
+ return !conn_send_cmd(mdev->tconn, mdev->vnr, sock, cmd, h, size);
}

static inline int drbd_send_short_cmd(struct drbd_conf *mdev,
enum drbd_packet cmd)
{
struct p_header h;
- return drbd_send_cmd(mdev, USE_DATA_SOCKET, cmd, &h, sizeof(h));
+ return drbd_send_cmd(mdev, &mdev->tconn->data, cmd, &h, sizeof(h));
}

static inline int drbd_send_ping(struct drbd_tconn *tconn)
{
struct p_header h;
- return !conn_send_cmd(tconn, 0, USE_META_SOCKET, P_PING, &h, sizeof(h));
+ return !conn_send_cmd(tconn, 0, &tconn->meta, P_PING, &h, sizeof(h));
}

static inline int drbd_send_ping_ack(struct drbd_tconn *tconn)
{
struct p_header h;
- return !conn_send_cmd(tconn, 0, USE_META_SOCKET, P_PING_ACK, &h, sizeof(h));
+ return !conn_send_cmd(tconn, 0, &tconn->meta, P_PING_ACK, &h, sizeof(h));
}

static inline int drbd_send_state_req(struct drbd_conf *mdev,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index c063426..3e1cda9 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -736,29 +736,15 @@ int _conn_send_cmd(struct drbd_tconn *tconn, int vnr, struct socket *sock,
/* don't pass the socket. we may only look at it
* when we hold the appropriate socket mutex.
*/
-int conn_send_cmd(struct drbd_tconn *tconn, int vnr, int use_data_socket,
+int conn_send_cmd(struct drbd_tconn *tconn, int vnr, struct drbd_socket *sock,
enum drbd_packet cmd, struct p_header *h, size_t size)
{
- struct socket *sock;
int err = -EIO;

- if (use_data_socket) {
- mutex_lock(&tconn->data.mutex);
- sock = tconn->data.socket;
- } else {
- mutex_lock(&tconn->meta.mutex);
- sock = tconn->meta.socket;
- }
-
- /* drbd_disconnect() could have called drbd_free_sock()
- * while we were waiting in down()... */
- if (likely(sock != NULL))
- err = _conn_send_cmd(tconn, vnr, sock, cmd, h, size, 0);
-
- if (use_data_socket)
- mutex_unlock(&tconn->data.mutex);
- else
- mutex_unlock(&tconn->meta.mutex);
+ mutex_lock(&sock->mutex);
+ if (sock->socket)
+ err = _conn_send_cmd(tconn, vnr, sock->socket, cmd, h, size, 0);
+ mutex_unlock(&sock->mutex);
return err;
}

@@ -900,7 +886,7 @@ int _drbd_send_uuids(struct drbd_conf *mdev, u64 uuid_flags)

put_ldev(mdev);

- return drbd_send_cmd(mdev, USE_DATA_SOCKET, P_UUIDS, &p.head, sizeof(p));
+ return drbd_send_cmd(mdev, &mdev->tconn->data, P_UUIDS, &p.head, sizeof(p));
}

int drbd_send_uuids(struct drbd_conf *mdev)
@@ -944,7 +930,7 @@ int drbd_gen_and_send_sync_uuid(struct drbd_conf *mdev)
drbd_md_sync(mdev);
p.uuid = cpu_to_be64(uuid);

- return drbd_send_cmd(mdev, USE_DATA_SOCKET, P_SYNC_UUID, &p.head, sizeof(p));
+ return drbd_send_cmd(mdev, &mdev->tconn->data, P_SYNC_UUID, &p.head, sizeof(p));
}

int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply, enum dds_flags flags)
@@ -976,7 +962,7 @@ int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply, enum dds_flags fl
p.queue_order_type = cpu_to_be16(q_order_type);
p.dds_flags = cpu_to_be16(flags);

- ok = drbd_send_cmd(mdev, USE_DATA_SOCKET, P_SIZES, &p.head, sizeof(p));
+ ok = drbd_send_cmd(mdev, &mdev->tconn->data, P_SIZES, &p.head, sizeof(p));
return ok;
}

@@ -1011,7 +997,7 @@ int _conn_send_state_req(struct drbd_tconn *tconn, int vnr, enum drbd_packet cmd
p.mask = cpu_to_be32(mask.i);
p.val = cpu_to_be32(val.i);

- return !conn_send_cmd(tconn, vnr, USE_DATA_SOCKET, cmd, &p.head, sizeof(p));
+ return !conn_send_cmd(tconn, vnr, &tconn->data, cmd, &p.head, sizeof(p));
}

int drbd_send_sr_reply(struct drbd_conf *mdev, enum drbd_state_rv retcode)
@@ -1020,7 +1006,7 @@ int drbd_send_sr_reply(struct drbd_conf *mdev, enum drbd_state_rv retcode)

p.retcode = cpu_to_be32(retcode);

- return drbd_send_cmd(mdev, USE_META_SOCKET, P_STATE_CHG_REPLY, &p.head, sizeof(p));
+ return drbd_send_cmd(mdev, &mdev->tconn->meta, P_STATE_CHG_REPLY, &p.head, sizeof(p));
}

int conn_send_sr_reply(struct drbd_tconn *tconn, enum drbd_state_rv retcode)
@@ -1030,7 +1016,7 @@ int conn_send_sr_reply(struct drbd_tconn *tconn, enum drbd_state_rv retcode)

p.retcode = cpu_to_be32(retcode);

- return !conn_send_cmd(tconn, 0, USE_META_SOCKET, cmd, &p.head, sizeof(p));
+ return !conn_send_cmd(tconn, 0, &tconn->meta, cmd, &p.head, sizeof(p));
}

int fill_bitmap_rle_bits(struct drbd_conf *mdev,
@@ -1254,7 +1240,7 @@ int drbd_send_b_ack(struct drbd_conf *mdev, u32 barrier_nr, u32 set_size)

if (mdev->state.conn < C_CONNECTED)
return false;
- ok = drbd_send_cmd(mdev, USE_META_SOCKET, P_BARRIER_ACK, &p.head, sizeof(p));
+ ok = drbd_send_cmd(mdev, &mdev->tconn->meta, P_BARRIER_ACK, &p.head, sizeof(p));
return ok;
}

@@ -1279,7 +1265,7 @@ static int _drbd_send_ack(struct drbd_conf *mdev, enum drbd_packet cmd,

if (!mdev->tconn->meta.socket || mdev->state.conn < C_CONNECTED)
return false;
- ok = drbd_send_cmd(mdev, USE_META_SOCKET, cmd, &p.head, sizeof(p));
+ ok = drbd_send_cmd(mdev, &mdev->tconn->meta, cmd, &p.head, sizeof(p));
return ok;
}

@@ -1337,7 +1323,7 @@ int drbd_send_drequest(struct drbd_conf *mdev, int cmd,
p.block_id = block_id;
p.blksize = cpu_to_be32(size);

- ok = drbd_send_cmd(mdev, USE_DATA_SOCKET, cmd, &p.head, sizeof(p));
+ ok = drbd_send_cmd(mdev, &mdev->tconn->data, cmd, &p.head, sizeof(p));
return ok;
}

@@ -1371,7 +1357,7 @@ int drbd_send_ov_request(struct drbd_conf *mdev, sector_t sector, int size)
p.block_id = ID_SYNCER /* unused */;
p.blksize = cpu_to_be32(size);

- ok = drbd_send_cmd(mdev, USE_DATA_SOCKET, P_OV_REQUEST, &p.head, sizeof(p));
+ ok = drbd_send_cmd(mdev, &mdev->tconn->data, P_OV_REQUEST, &p.head, sizeof(p));
return ok;
}

@@ -1668,7 +1654,7 @@ int drbd_send_oos(struct drbd_conf *mdev, struct drbd_request *req)
p.sector = cpu_to_be64(req->i.sector);
p.blksize = cpu_to_be32(req->i.size);

- return drbd_send_cmd(mdev, USE_DATA_SOCKET, P_OUT_OF_SYNC, &p.head, sizeof(p));
+ return drbd_send_cmd(mdev, &mdev->tconn->data, P_OUT_OF_SYNC, &p.head, sizeof(p));
}

/*
--
1.7.4.1


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