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Diffstat (limited to 'fs/dlm/rcom.c')
-rw-r--r--fs/dlm/rcom.c246
1 files changed, 141 insertions, 105 deletions
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index e3d9f72c640d..f19860315043 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -27,46 +27,77 @@ static int rcom_response(struct dlm_ls *ls)
return test_bit(LSFL_RCOM_READY, &ls->ls_flags);
}
+static void _create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,
+ struct dlm_rcom **rc_ret, char *mb, int mb_len)
+{
+ struct dlm_rcom *rc;
+
+ rc = (struct dlm_rcom *) mb;
+
+ rc->rc_header.h_version = cpu_to_le32(DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
+ rc->rc_header.u.h_lockspace = cpu_to_le32(ls->ls_global_id);
+ rc->rc_header.h_nodeid = cpu_to_le32(dlm_our_nodeid());
+ rc->rc_header.h_length = cpu_to_le16(mb_len);
+ rc->rc_header.h_cmd = DLM_RCOM;
+
+ rc->rc_type = cpu_to_le32(type);
+
+ spin_lock(&ls->ls_recover_lock);
+ rc->rc_seq = cpu_to_le64(ls->ls_recover_seq);
+ spin_unlock(&ls->ls_recover_lock);
+
+ *rc_ret = rc;
+}
+
static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,
struct dlm_rcom **rc_ret, struct dlm_mhandle **mh_ret)
{
- struct dlm_rcom *rc;
+ int mb_len = sizeof(struct dlm_rcom) + len;
struct dlm_mhandle *mh;
char *mb;
- int mb_len = sizeof(struct dlm_rcom) + len;
- mh = dlm_lowcomms_get_buffer(to_nodeid, mb_len, GFP_NOFS, &mb);
+ mh = dlm_midcomms_get_mhandle(to_nodeid, mb_len, GFP_NOFS, &mb);
if (!mh) {
- log_print("create_rcom to %d type %d len %d ENOBUFS",
- to_nodeid, type, len);
+ log_print("%s to %d type %d len %d ENOBUFS",
+ __func__, to_nodeid, type, len);
return -ENOBUFS;
}
- memset(mb, 0, mb_len);
- rc = (struct dlm_rcom *) mb;
-
- rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
- rc->rc_header.h_lockspace = ls->ls_global_id;
- rc->rc_header.h_nodeid = dlm_our_nodeid();
- rc->rc_header.h_length = mb_len;
- rc->rc_header.h_cmd = DLM_RCOM;
+ _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len);
+ *mh_ret = mh;
+ return 0;
+}
- rc->rc_type = type;
+static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type,
+ int len, struct dlm_rcom **rc_ret,
+ struct dlm_msg **msg_ret)
+{
+ int mb_len = sizeof(struct dlm_rcom) + len;
+ struct dlm_msg *msg;
+ char *mb;
- spin_lock(&ls->ls_recover_lock);
- rc->rc_seq = ls->ls_recover_seq;
- spin_unlock(&ls->ls_recover_lock);
+ msg = dlm_lowcomms_new_msg(to_nodeid, mb_len, GFP_NOFS, &mb,
+ NULL, NULL);
+ if (!msg) {
+ log_print("create_rcom to %d type %d len %d ENOBUFS",
+ to_nodeid, type, len);
+ return -ENOBUFS;
+ }
- *mh_ret = mh;
- *rc_ret = rc;
+ _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len);
+ *msg_ret = msg;
return 0;
}
-static void send_rcom(struct dlm_ls *ls, struct dlm_mhandle *mh,
- struct dlm_rcom *rc)
+static void send_rcom(struct dlm_mhandle *mh, struct dlm_rcom *rc)
+{
+ dlm_midcomms_commit_mhandle(mh);
+}
+
+static void send_rcom_stateless(struct dlm_msg *msg, struct dlm_rcom *rc)
{
- dlm_rcom_out(rc);
- dlm_lowcomms_commit_buffer(mh);
+ dlm_lowcomms_commit_msg(msg);
+ dlm_lowcomms_put_msg(msg);
}
static void set_rcom_status(struct dlm_ls *ls, struct rcom_status *rs,
@@ -94,10 +125,10 @@ static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
{
struct rcom_config *rf = (struct rcom_config *) rc->rc_buf;
- if ((rc->rc_header.h_version & 0xFFFF0000) != DLM_HEADER_MAJOR) {
+ if ((le32_to_cpu(rc->rc_header.h_version) & 0xFFFF0000) != DLM_HEADER_MAJOR) {
log_error(ls, "version mismatch: %x nodeid %d: %x",
DLM_HEADER_MAJOR | DLM_HEADER_MINOR, nodeid,
- rc->rc_header.h_version);
+ le32_to_cpu(rc->rc_header.h_version));
return -EPROTO;
}
@@ -112,10 +143,10 @@ static int check_rcom_config(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
return 0;
}
-static void allow_sync_reply(struct dlm_ls *ls, uint64_t *new_seq)
+static void allow_sync_reply(struct dlm_ls *ls, __le64 *new_seq)
{
spin_lock(&ls->ls_rcom_spin);
- *new_seq = ++ls->ls_rcom_seq;
+ *new_seq = cpu_to_le64(++ls->ls_rcom_seq);
set_bit(LSFL_RCOM_WAIT, &ls->ls_flags);
spin_unlock(&ls->ls_rcom_spin);
}
@@ -142,29 +173,29 @@ static void disallow_sync_reply(struct dlm_ls *ls)
int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)
{
struct dlm_rcom *rc;
- struct dlm_mhandle *mh;
+ struct dlm_msg *msg;
int error = 0;
ls->ls_recover_nodeid = nodeid;
if (nodeid == dlm_our_nodeid()) {
rc = ls->ls_recover_buf;
- rc->rc_result = dlm_recover_status(ls);
+ rc->rc_result = cpu_to_le32(dlm_recover_status(ls));
goto out;
}
retry:
- error = create_rcom(ls, nodeid, DLM_RCOM_STATUS,
- sizeof(struct rcom_status), &rc, &mh);
+ error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS,
+ sizeof(struct rcom_status), &rc, &msg);
if (error)
goto out;
set_rcom_status(ls, (struct rcom_status *)rc->rc_buf, status_flags);
allow_sync_reply(ls, &rc->rc_id);
- memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
+ memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);
- send_rcom(ls, mh, rc);
+ send_rcom_stateless(msg, rc);
error = dlm_wait_function(ls, &rcom_response);
disallow_sync_reply(ls);
@@ -175,7 +206,7 @@ retry:
rc = ls->ls_recover_buf;
- if (rc->rc_result == -ESRCH) {
+ if (rc->rc_result == cpu_to_le32(-ESRCH)) {
/* we pretend the remote lockspace exists with 0 status */
log_debug(ls, "remote node %d not ready", nodeid);
rc->rc_result = 0;
@@ -192,11 +223,11 @@ retry:
static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
struct dlm_rcom *rc;
- struct dlm_mhandle *mh;
struct rcom_status *rs;
uint32_t status;
- int nodeid = rc_in->rc_header.h_nodeid;
+ int nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid);
int len = sizeof(struct rcom_config);
+ struct dlm_msg *msg;
int num_slots = 0;
int error;
@@ -219,14 +250,14 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
len += num_slots * sizeof(struct rcom_slot);
do_create:
- error = create_rcom(ls, nodeid, DLM_RCOM_STATUS_REPLY,
- len, &rc, &mh);
+ error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY,
+ len, &rc, &msg);
if (error)
return;
rc->rc_id = rc_in->rc_id;
rc->rc_seq_reply = rc_in->rc_seq;
- rc->rc_result = status;
+ rc->rc_result = cpu_to_le32(status);
set_rcom_config(ls, (struct rcom_config *)rc->rc_buf, num_slots);
@@ -247,21 +278,23 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in)
spin_unlock(&ls->ls_recover_lock);
do_send:
- send_rcom(ls, mh, rc);
+ send_rcom_stateless(msg, rc);
}
static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
spin_lock(&ls->ls_rcom_spin);
if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) ||
- rc_in->rc_id != ls->ls_rcom_seq) {
+ le64_to_cpu(rc_in->rc_id) != ls->ls_rcom_seq) {
log_debug(ls, "reject reply %d from %d seq %llx expect %llx",
- rc_in->rc_type, rc_in->rc_header.h_nodeid,
- (unsigned long long)rc_in->rc_id,
+ le32_to_cpu(rc_in->rc_type),
+ le32_to_cpu(rc_in->rc_header.h_nodeid),
+ (unsigned long long)le64_to_cpu(rc_in->rc_id),
(unsigned long long)ls->ls_rcom_seq);
goto out;
}
- memcpy(ls->ls_recover_buf, rc_in, rc_in->rc_header.h_length);
+ memcpy(ls->ls_recover_buf, rc_in,
+ le16_to_cpu(rc_in->rc_header.h_length));
set_bit(LSFL_RCOM_READY, &ls->ls_flags);
clear_bit(LSFL_RCOM_WAIT, &ls->ls_flags);
wake_up(&ls->ls_wait_general);
@@ -272,21 +305,22 @@ static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
{
struct dlm_rcom *rc;
- struct dlm_mhandle *mh;
+ struct dlm_msg *msg;
int error = 0;
ls->ls_recover_nodeid = nodeid;
retry:
- error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, &rc, &mh);
+ error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES, last_len,
+ &rc, &msg);
if (error)
goto out;
memcpy(rc->rc_buf, last_name, last_len);
allow_sync_reply(ls, &rc->rc_id);
- memset(ls->ls_recover_buf, 0, dlm_config.ci_buffer_size);
+ memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);
- send_rcom(ls, mh, rc);
+ send_rcom_stateless(msg, rc);
error = dlm_wait_function(ls, &rcom_response);
disallow_sync_reply(ls);
@@ -299,14 +333,16 @@ retry:
static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
struct dlm_rcom *rc;
- struct dlm_mhandle *mh;
int error, inlen, outlen, nodeid;
+ struct dlm_msg *msg;
- nodeid = rc_in->rc_header.h_nodeid;
- inlen = rc_in->rc_header.h_length - sizeof(struct dlm_rcom);
- outlen = dlm_config.ci_buffer_size - sizeof(struct dlm_rcom);
+ nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid);
+ inlen = le16_to_cpu(rc_in->rc_header.h_length) -
+ sizeof(struct dlm_rcom);
+ outlen = DLM_MAX_APP_BUFSIZE - sizeof(struct dlm_rcom);
- error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, &rc, &mh);
+ error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,
+ &rc, &msg);
if (error)
return;
rc->rc_id = rc_in->rc_id;
@@ -314,7 +350,7 @@ static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in)
dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,
nodeid);
- send_rcom(ls, mh, rc);
+ send_rcom_stateless(msg, rc);
}
int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid)
@@ -329,9 +365,9 @@ int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid)
if (error)
goto out;
memcpy(rc->rc_buf, r->res_name, r->res_length);
- rc->rc_id = (unsigned long) r->res_id;
+ rc->rc_id = cpu_to_le64(r->res_id);
- send_rcom(ls, mh, rc);
+ send_rcom(mh, rc);
out:
return error;
}
@@ -340,29 +376,30 @@ static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
struct dlm_rcom *rc;
struct dlm_mhandle *mh;
- int error, ret_nodeid, nodeid = rc_in->rc_header.h_nodeid;
- int len = rc_in->rc_header.h_length - sizeof(struct dlm_rcom);
-
- error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh);
- if (error)
- return;
+ int error, ret_nodeid, nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid);
+ int len = le16_to_cpu(rc_in->rc_header.h_length) -
+ sizeof(struct dlm_rcom);
/* Old code would send this special id to trigger a debug dump. */
- if (rc_in->rc_id == 0xFFFFFFFF) {
+ if (rc_in->rc_id == cpu_to_le64(0xFFFFFFFF)) {
log_error(ls, "receive_rcom_lookup dump from %d", nodeid);
dlm_dump_rsb_name(ls, rc_in->rc_buf, len);
return;
}
+ error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh);
+ if (error)
+ return;
+
error = dlm_master_lookup(ls, nodeid, rc_in->rc_buf, len,
DLM_LU_RECOVER_MASTER, &ret_nodeid, NULL);
if (error)
ret_nodeid = error;
- rc->rc_result = ret_nodeid;
+ rc->rc_result = cpu_to_le32(ret_nodeid);
rc->rc_id = rc_in->rc_id;
rc->rc_seq_reply = rc_in->rc_seq;
- send_rcom(ls, mh, rc);
+ send_rcom(mh, rc);
}
static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in)
@@ -417,9 +454,9 @@ int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
rl = (struct rcom_lock *) rc->rc_buf;
pack_rcom_lock(r, lkb, rl);
- rc->rc_id = (unsigned long) r;
+ rc->rc_id = cpu_to_le64((uintptr_t)r);
- send_rcom(ls, mh, rc);
+ send_rcom(mh, rc);
out:
return error;
}
@@ -429,7 +466,7 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
{
struct dlm_rcom *rc;
struct dlm_mhandle *mh;
- int error, nodeid = rc_in->rc_header.h_nodeid;
+ int error, nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid);
dlm_recover_master_copy(ls, rc_in);
@@ -445,7 +482,7 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in)
rc->rc_id = rc_in->rc_id;
rc->rc_seq_reply = rc_in->rc_seq;
- send_rcom(ls, mh, rc);
+ send_rcom(mh, rc);
}
/* If the lockspace doesn't exist then still send a status message
@@ -459,29 +496,27 @@ int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
char *mb;
int mb_len = sizeof(struct dlm_rcom) + sizeof(struct rcom_config);
- mh = dlm_lowcomms_get_buffer(nodeid, mb_len, GFP_NOFS, &mb);
+ mh = dlm_midcomms_get_mhandle(nodeid, mb_len, GFP_NOFS, &mb);
if (!mh)
return -ENOBUFS;
- memset(mb, 0, mb_len);
rc = (struct dlm_rcom *) mb;
- rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
- rc->rc_header.h_lockspace = rc_in->rc_header.h_lockspace;
- rc->rc_header.h_nodeid = dlm_our_nodeid();
- rc->rc_header.h_length = mb_len;
+ rc->rc_header.h_version = cpu_to_le32(DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
+ rc->rc_header.u.h_lockspace = rc_in->rc_header.u.h_lockspace;
+ rc->rc_header.h_nodeid = cpu_to_le32(dlm_our_nodeid());
+ rc->rc_header.h_length = cpu_to_le16(mb_len);
rc->rc_header.h_cmd = DLM_RCOM;
- rc->rc_type = DLM_RCOM_STATUS_REPLY;
+ rc->rc_type = cpu_to_le32(DLM_RCOM_STATUS_REPLY);
rc->rc_id = rc_in->rc_id;
rc->rc_seq_reply = rc_in->rc_seq;
- rc->rc_result = -ESRCH;
+ rc->rc_result = cpu_to_le32(-ESRCH);
rf = (struct rcom_config *) rc->rc_buf;
rf->rf_lvblen = cpu_to_le32(~0U);
- dlm_rcom_out(rc);
- dlm_lowcomms_commit_buffer(mh);
+ dlm_midcomms_commit_mhandle(mh);
return 0;
}
@@ -539,42 +574,42 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
uint64_t seq;
switch (rc->rc_type) {
- case DLM_RCOM_STATUS_REPLY:
+ case cpu_to_le32(DLM_RCOM_STATUS_REPLY):
reply = 1;
break;
- case DLM_RCOM_NAMES:
+ case cpu_to_le32(DLM_RCOM_NAMES):
names = 1;
break;
- case DLM_RCOM_NAMES_REPLY:
+ case cpu_to_le32(DLM_RCOM_NAMES_REPLY):
names = 1;
reply = 1;
break;
- case DLM_RCOM_LOOKUP:
+ case cpu_to_le32(DLM_RCOM_LOOKUP):
lookup = 1;
break;
- case DLM_RCOM_LOOKUP_REPLY:
+ case cpu_to_le32(DLM_RCOM_LOOKUP_REPLY):
lookup = 1;
reply = 1;
break;
- case DLM_RCOM_LOCK:
+ case cpu_to_le32(DLM_RCOM_LOCK):
lock = 1;
break;
- case DLM_RCOM_LOCK_REPLY:
+ case cpu_to_le32(DLM_RCOM_LOCK_REPLY):
lock = 1;
reply = 1;
break;
- };
+ }
spin_lock(&ls->ls_recover_lock);
status = ls->ls_recover_status;
- stop = test_bit(LSFL_RECOVER_STOP, &ls->ls_flags);
+ stop = dlm_recovery_stopped(ls);
seq = ls->ls_recover_seq;
spin_unlock(&ls->ls_recover_lock);
- if (stop && (rc->rc_type != DLM_RCOM_STATUS))
+ if (stop && (rc->rc_type != cpu_to_le32(DLM_RCOM_STATUS)))
goto ignore;
- if (reply && (rc->rc_seq_reply != seq))
+ if (reply && (le64_to_cpu(rc->rc_seq_reply) != seq))
goto ignore;
if (!(status & DLM_RS_NODES) && (names || lookup || lock))
@@ -584,59 +619,60 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
goto ignore;
switch (rc->rc_type) {
- case DLM_RCOM_STATUS:
+ case cpu_to_le32(DLM_RCOM_STATUS):
receive_rcom_status(ls, rc);
break;
- case DLM_RCOM_NAMES:
+ case cpu_to_le32(DLM_RCOM_NAMES):
receive_rcom_names(ls, rc);
break;
- case DLM_RCOM_LOOKUP:
+ case cpu_to_le32(DLM_RCOM_LOOKUP):
receive_rcom_lookup(ls, rc);
break;
- case DLM_RCOM_LOCK:
- if (rc->rc_header.h_length < lock_size)
+ case cpu_to_le32(DLM_RCOM_LOCK):
+ if (le16_to_cpu(rc->rc_header.h_length) < lock_size)
goto Eshort;
receive_rcom_lock(ls, rc);
break;
- case DLM_RCOM_STATUS_REPLY:
+ case cpu_to_le32(DLM_RCOM_STATUS_REPLY):
receive_sync_reply(ls, rc);
break;
- case DLM_RCOM_NAMES_REPLY:
+ case cpu_to_le32(DLM_RCOM_NAMES_REPLY):
receive_sync_reply(ls, rc);
break;
- case DLM_RCOM_LOOKUP_REPLY:
+ case cpu_to_le32(DLM_RCOM_LOOKUP_REPLY):
receive_rcom_lookup_reply(ls, rc);
break;
- case DLM_RCOM_LOCK_REPLY:
- if (rc->rc_header.h_length < lock_size)
+ case cpu_to_le32(DLM_RCOM_LOCK_REPLY):
+ if (le16_to_cpu(rc->rc_header.h_length) < lock_size)
goto Eshort;
dlm_recover_process_copy(ls, rc);
break;
default:
- log_error(ls, "receive_rcom bad type %d", rc->rc_type);
+ log_error(ls, "receive_rcom bad type %d",
+ le32_to_cpu(rc->rc_type));
}
return;
ignore:
log_limit(ls, "dlm_receive_rcom ignore msg %d "
"from %d %llu %llu recover seq %llu sts %x gen %u",
- rc->rc_type,
+ le32_to_cpu(rc->rc_type),
nodeid,
- (unsigned long long)rc->rc_seq,
- (unsigned long long)rc->rc_seq_reply,
+ (unsigned long long)le64_to_cpu(rc->rc_seq),
+ (unsigned long long)le64_to_cpu(rc->rc_seq_reply),
(unsigned long long)seq,
status, ls->ls_generation);
return;
Eshort:
log_error(ls, "recovery message %d from %d is too short",
- rc->rc_type, nodeid);
+ le32_to_cpu(rc->rc_type), nodeid);
}