spin_unlock_irq(&mdev->req_lock);
list_for_each_entry_safe(e, t, &reclaimed, w.list)
- drbd_free_ee(mdev, e);
+ drbd_free_net_ee(mdev, e);
}
/**
* Is also used from inside an other spin_lock_irq(&mdev->req_lock);
* Either links the page chain back to the global pool,
* or returns all pages to the system. */
-static void drbd_pp_free(struct drbd_conf *mdev, struct page *page)
+static void drbd_pp_free(struct drbd_conf *mdev, struct page *page, int is_net)
{
+ atomic_t *a = is_net ? &mdev->pp_in_use_by_net : &mdev->pp_in_use;
int i;
+
if (drbd_pp_vacant > (DRBD_MAX_SEGMENT_SIZE/PAGE_SIZE)*minor_count)
i = page_chain_free(page);
else {
drbd_pp_vacant += i;
spin_unlock(&drbd_pp_lock);
}
- atomic_sub(i, &mdev->pp_in_use);
- i = atomic_read(&mdev->pp_in_use);
+ i = atomic_sub_return(i, a);
if (i < 0)
- dev_warn(DEV, "ASSERTION FAILED: pp_in_use: %d < 0\n", i);
+ dev_warn(DEV, "ASSERTION FAILED: %s: %d < 0\n",
+ is_net ? "pp_in_use_by_net" : "pp_in_use", i);
wake_up(&drbd_pp_wait);
}
e->size = data_size;
e->flags = 0;
e->sector = sector;
- e->sector = sector;
e->block_id = id;
return e;
return NULL;
}
-void drbd_free_ee(struct drbd_conf *mdev, struct drbd_epoch_entry *e)
+void drbd_free_some_ee(struct drbd_conf *mdev, struct drbd_epoch_entry *e, int is_net)
{
- drbd_pp_free(mdev, e->pages);
+ if (e->flags & EE_HAS_DIGEST)
+ kfree(e->digest);
+ drbd_pp_free(mdev, e->pages, is_net);
D_ASSERT(atomic_read(&e->pending_bios) == 0);
D_ASSERT(hlist_unhashed(&e->colision));
mempool_free(e, drbd_ee_mempool);
LIST_HEAD(work_list);
struct drbd_epoch_entry *e, *t;
int count = 0;
+ int is_net = list == &mdev->net_ee;
spin_lock_irq(&mdev->req_lock);
list_splice_init(list, &work_list);
spin_unlock_irq(&mdev->req_lock);
list_for_each_entry_safe(e, t, &work_list, w.list) {
- drbd_free_ee(mdev, e);
+ drbd_free_some_ee(mdev, e, is_net);
count++;
}
return count;
spin_unlock_irq(&mdev->req_lock);
list_for_each_entry_safe(e, t, &reclaimed, w.list)
- drbd_free_ee(mdev, e);
+ drbd_free_net_ee(mdev, e);
/* possible callbacks here:
* e_end_block, and e_end_resync_block, e_send_discard_ack.
static int drbd_send_fp(struct drbd_conf *mdev,
struct socket *sock, enum drbd_packets cmd)
{
- struct p_header *h = (struct p_header *) &mdev->data.sbuf.header;
+ struct p_header80 *h = &mdev->data.sbuf.header.h80;
return _drbd_send_cmd(mdev, sock, cmd, h, sizeof(*h), 0);
}
static enum drbd_packets drbd_recv_fp(struct drbd_conf *mdev, struct socket *sock)
{
- struct p_header *h = (struct p_header *) &mdev->data.sbuf.header;
+ struct p_header80 *h = &mdev->data.rbuf.header.h80;
int rr;
rr = drbd_recv_short(mdev, sock, h, sizeof(*h), 0);
D_ASSERT(!mdev->data.socket);
- if (test_and_clear_bit(CREATE_BARRIER, &mdev->flags))
- dev_err(DEV, "CREATE_BARRIER flag was set in drbd_connect - now cleared!\n");
-
if (drbd_request_state(mdev, NS(conn, C_WF_CONNECTION)) < SS_SUCCESS)
return -2;
drbd_thread_start(&mdev->asender);
+ if (mdev->agreed_pro_version < 95 && get_ldev(mdev)) {
+ drbd_setup_queue_param(mdev, DRBD_MAX_SIZE_H80_PACKET);
+ put_ldev(mdev);
+ }
+
if (!drbd_send_protocol(mdev))
return -1;
drbd_send_sync_param(mdev, &mdev->sync_conf);
return -1;
}
-static int drbd_recv_header(struct drbd_conf *mdev, struct p_header *h)
+static int drbd_recv_header(struct drbd_conf *mdev, enum drbd_packets *cmd, unsigned int *packet_size)
{
+ union p_header *h = &mdev->data.rbuf.header;
int r;
r = drbd_recv(mdev, h, sizeof(*h));
-
if (unlikely(r != sizeof(*h))) {
dev_err(DEV, "short read expecting header on sock: r=%d\n", r);
return FALSE;
- };
- h->command = be16_to_cpu(h->command);
- h->length = be16_to_cpu(h->length);
- if (unlikely(h->magic != BE_DRBD_MAGIC)) {
+ }
+
+ if (likely(h->h80.magic == BE_DRBD_MAGIC)) {
+ *cmd = be16_to_cpu(h->h80.command);
+ *packet_size = be16_to_cpu(h->h80.length);
+ } else if (h->h95.magic == BE_DRBD_MAGIC_BIG) {
+ *cmd = be16_to_cpu(h->h95.command);
+ *packet_size = be32_to_cpu(h->h95.length);
+ } else {
dev_err(DEV, "magic?? on data m: 0x%lx c: %d l: %d\n",
- (long)be32_to_cpu(h->magic),
- h->command, h->length);
+ (long)be32_to_cpu(h->h80.magic),
+ h->h80.command, h->h80.length);
return FALSE;
}
mdev->last_received = jiffies;
bio->bi_sector = sector;
bio->bi_bdev = mdev->ldev->backing_bdev;
/* we special case some flags in the multi-bio case, see below
- * (BIO_RW_UNPLUG, BIO_RW_BARRIER) */
+ * (REQ_UNPLUG, REQ_HARDBARRIER) */
bio->bi_rw = rw;
bio->bi_private = e;
bio->bi_end_io = drbd_endio_sec;
bios = bios->bi_next;
bio->bi_next = NULL;
- /* strip off BIO_RW_UNPLUG unless it is the last bio */
+ /* strip off REQ_UNPLUG unless it is the last bio */
if (bios)
- bio->bi_rw &= ~(1<<BIO_RW_UNPLUG);
+ bio->bi_rw &= ~REQ_UNPLUG;
drbd_generic_make_request(mdev, fault_type, bio);
- /* strip off BIO_RW_BARRIER,
+ /* strip off REQ_HARDBARRIER,
* unless it is the first or last bio */
if (bios && bios->bi_next)
- bios->bi_rw &= ~(1<<BIO_RW_BARRIER);
+ bios->bi_rw &= ~REQ_HARDBARRIER;
} while (bios);
maybe_kick_lo(mdev);
return 0;
}
/**
- * w_e_reissue() - Worker callback; Resubmit a bio, without BIO_RW_BARRIER set
+ * w_e_reissue() - Worker callback; Resubmit a bio, without REQ_HARDBARRIER set
* @mdev: DRBD device.
* @w: work object.
* @cancel: The connection will be closed anyways (unused in this callback)
(and DE_BARRIER_IN_NEXT_EPOCH_ISSUED in the previous Epoch)
so that we can finish that epoch in drbd_may_finish_epoch().
That is necessary if we already have a long chain of Epochs, before
- we realize that BIO_RW_BARRIER is actually not supported */
+ we realize that REQ_HARDBARRIER is actually not supported */
/* As long as the -ENOTSUPP on the barrier is reported immediately
that will never trigger. If it is reported late, we will just
return 1;
}
-static int receive_Barrier(struct drbd_conf *mdev, struct p_header *h)
+static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
int rv, issue_flush;
- struct p_barrier *p = (struct p_barrier *)h;
+ struct p_barrier *p = &mdev->data.rbuf.barrier;
struct drbd_epoch *epoch;
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
-
- rv = drbd_recv(mdev, h->payload, h->length);
- ERR_IF(rv != h->length) return FALSE;
-
inc_unacked(mdev);
if (mdev->net_conf->wire_protocol != DRBD_PROT_C)
data_size -= rr;
}
kunmap(page);
- drbd_pp_free(mdev, page);
+ drbd_pp_free(mdev, page, 0);
return rv;
}
list_add(&e->w.list, &mdev->sync_ee);
spin_unlock_irq(&mdev->req_lock);
+ atomic_add(data_size >> 9, &mdev->rs_sect_ev);
if (drbd_submit_ee(mdev, e, WRITE, DRBD_FAULT_RS_WR) == 0)
return TRUE;
return FALSE;
}
-static int receive_DataReply(struct drbd_conf *mdev, struct p_header *h)
+static int receive_DataReply(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
struct drbd_request *req;
sector_t sector;
- unsigned int header_size, data_size;
int ok;
- struct p_data *p = (struct p_data *)h;
-
- header_size = sizeof(*p) - sizeof(*h);
- data_size = h->length - header_size;
-
- ERR_IF(data_size == 0) return FALSE;
-
- if (drbd_recv(mdev, h->payload, header_size) != header_size)
- return FALSE;
+ struct p_data *p = &mdev->data.rbuf.data;
sector = be64_to_cpu(p->sector);
return ok;
}
-static int receive_RSDataReply(struct drbd_conf *mdev, struct p_header *h)
+static int receive_RSDataReply(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
sector_t sector;
- unsigned int header_size, data_size;
int ok;
- struct p_data *p = (struct p_data *)h;
-
- header_size = sizeof(*p) - sizeof(*h);
- data_size = h->length - header_size;
-
- ERR_IF(data_size == 0) return FALSE;
-
- if (drbd_recv(mdev, h->payload, header_size) != header_size)
- return FALSE;
+ struct p_data *p = &mdev->data.rbuf.data;
sector = be64_to_cpu(p->sector);
D_ASSERT(p->block_id == ID_SYNCER);
drbd_send_ack_dp(mdev, P_NEG_ACK, p);
}
+ atomic_add(data_size >> 9, &mdev->rs_sect_in);
+
return ok;
}
return ret;
}
+static unsigned long write_flags_to_bio(struct drbd_conf *mdev, u32 dpf)
+{
+ if (mdev->agreed_pro_version >= 95)
+ return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
+ (dpf & DP_UNPLUG ? REQ_UNPLUG : 0) |
+ (dpf & DP_FUA ? REQ_FUA : 0) |
+ (dpf & DP_FLUSH ? REQ_FUA : 0) |
+ (dpf & DP_DISCARD ? REQ_DISCARD : 0);
+ else
+ return dpf & DP_RW_SYNC ? (REQ_SYNC | REQ_UNPLUG) : 0;
+}
+
/* mirrored write */
-static int receive_Data(struct drbd_conf *mdev, struct p_header *h)
+static int receive_Data(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
sector_t sector;
struct drbd_epoch_entry *e;
- struct p_data *p = (struct p_data *)h;
- int header_size, data_size;
+ struct p_data *p = &mdev->data.rbuf.data;
int rw = WRITE;
u32 dp_flags;
- header_size = sizeof(*p) - sizeof(*h);
- data_size = h->length - header_size;
-
- ERR_IF(data_size == 0) return FALSE;
-
- if (drbd_recv(mdev, h->payload, header_size) != header_size)
- return FALSE;
-
if (!get_ldev(mdev)) {
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "Can not write mirrored data block "
epoch = list_entry(e->epoch->list.prev, struct drbd_epoch, list);
if (epoch == e->epoch) {
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
- rw |= (1<<BIO_RW_BARRIER);
+ rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
} else {
if (atomic_read(&epoch->epoch_size) > 1 ||
!test_bit(DE_CONTAINS_A_BARRIER, &epoch->flags)) {
set_bit(DE_BARRIER_IN_NEXT_EPOCH_ISSUED, &epoch->flags);
set_bit(DE_CONTAINS_A_BARRIER, &e->epoch->flags);
- rw |= (1<<BIO_RW_BARRIER);
+ rw |= REQ_HARDBARRIER;
e->flags |= EE_IS_BARRIER;
}
}
spin_unlock(&mdev->epoch_lock);
dp_flags = be32_to_cpu(p->dp_flags);
- if (dp_flags & DP_HARDBARRIER) {
- dev_err(DEV, "ASSERT FAILED would have submitted barrier request\n");
- /* rw |= (1<<BIO_RW_BARRIER); */
- }
- if (dp_flags & DP_RW_SYNC)
- rw |= (1<<BIO_RW_SYNCIO) | (1<<BIO_RW_UNPLUG);
+ rw |= write_flags_to_bio(mdev, dp_flags);
+
if (dp_flags & DP_MAY_SET_IN_SYNC)
e->flags |= EE_MAY_SET_IN_SYNC;
return FALSE;
}
-static int receive_DataRequest(struct drbd_conf *mdev, struct p_header *h)
+/* We may throttle resync, if the lower device seems to be busy,
+ * and current sync rate is above c_min_rate.
+ *
+ * To decide whether or not the lower device is busy, we use a scheme similar
+ * to MD RAID is_mddev_idle(): if the partition stats reveal "significant"
+ * (more than 64 sectors) of activity we cannot account for with our own resync
+ * activity, it obviously is "busy".
+ *
+ * The current sync rate used here uses only the most recent two step marks,
+ * to have a short time average so we can react faster.
+ */
+int drbd_rs_should_slow_down(struct drbd_conf *mdev)
+{
+ struct gendisk *disk = mdev->ldev->backing_bdev->bd_contains->bd_disk;
+ unsigned long db, dt, dbdt;
+ int curr_events;
+ int throttle = 0;
+
+ /* feature disabled? */
+ if (mdev->sync_conf.c_min_rate == 0)
+ return 0;
+
+ curr_events = (int)part_stat_read(&disk->part0, sectors[0]) +
+ (int)part_stat_read(&disk->part0, sectors[1]) -
+ atomic_read(&mdev->rs_sect_ev);
+ if (!mdev->rs_last_events || curr_events - mdev->rs_last_events > 64) {
+ unsigned long rs_left;
+ int i;
+
+ mdev->rs_last_events = curr_events;
+
+ /* sync speed average over the last 2*DRBD_SYNC_MARK_STEP,
+ * approx. */
+ i = (mdev->rs_last_mark + DRBD_SYNC_MARKS-2) % DRBD_SYNC_MARKS;
+ rs_left = drbd_bm_total_weight(mdev) - mdev->rs_failed;
+
+ dt = ((long)jiffies - (long)mdev->rs_mark_time[i]) / HZ;
+ if (!dt)
+ dt++;
+ db = mdev->rs_mark_left[i] - rs_left;
+ dbdt = Bit2KB(db/dt);
+
+ if (dbdt > mdev->sync_conf.c_min_rate)
+ throttle = 1;
+ }
+ return throttle;
+}
+
+
+static int receive_DataRequest(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int digest_size)
{
sector_t sector;
const sector_t capacity = drbd_get_capacity(mdev->this_bdev);
struct drbd_epoch_entry *e;
struct digest_info *di = NULL;
- int size, digest_size;
+ int size;
unsigned int fault_type;
- struct p_block_req *p =
- (struct p_block_req *)h;
- const int brps = sizeof(*p)-sizeof(*h);
-
- if (drbd_recv(mdev, h->payload, brps) != brps)
- return FALSE;
+ struct p_block_req *p = &mdev->data.rbuf.block_req;
sector = be64_to_cpu(p->sector);
size = be32_to_cpu(p->blksize);
if (__ratelimit(&drbd_ratelimit_state))
dev_err(DEV, "Can not satisfy peer's read request, "
"no local data.\n");
- drbd_send_ack_rp(mdev, h->command == P_DATA_REQUEST ? P_NEG_DREPLY :
+ drbd_send_ack_rp(mdev, cmd == P_DATA_REQUEST ? P_NEG_DREPLY :
P_NEG_RS_DREPLY , p);
- return drbd_drain_block(mdev, h->length - brps);
+ return TRUE;
}
/* GFP_NOIO, because we must not cause arbitrary write-out: in a DRBD
return FALSE;
}
- switch (h->command) {
+ switch (cmd) {
case P_DATA_REQUEST:
e->w.cb = w_e_end_data_req;
fault_type = DRBD_FAULT_DT_RD;
- break;
+ /* application IO, don't drbd_rs_begin_io */
+ goto submit;
+
case P_RS_DATA_REQUEST:
e->w.cb = w_e_end_rsdata_req;
fault_type = DRBD_FAULT_RS_RD;
- /* Eventually this should become asynchronously. Currently it
- * blocks the whole receiver just to delay the reading of a
- * resync data block.
- * the drbd_work_queue mechanism is made for this...
- */
- if (!drbd_rs_begin_io(mdev, sector)) {
- /* we have been interrupted,
- * probably connection lost! */
- D_ASSERT(signal_pending(current));
- goto out_free_e;
- }
break;
case P_OV_REPLY:
case P_CSUM_RS_REQUEST:
fault_type = DRBD_FAULT_RS_RD;
- digest_size = h->length - brps ;
di = kmalloc(sizeof(*di) + digest_size, GFP_NOIO);
if (!di)
goto out_free_e;
di->digest_size = digest_size;
di->digest = (((char *)di)+sizeof(struct digest_info));
+ e->digest = di;
+ e->flags |= EE_HAS_DIGEST;
+
if (drbd_recv(mdev, di->digest, digest_size) != digest_size)
goto out_free_e;
- e->block_id = (u64)(unsigned long)di;
- if (h->command == P_CSUM_RS_REQUEST) {
+ if (cmd == P_CSUM_RS_REQUEST) {
D_ASSERT(mdev->agreed_pro_version >= 89);
e->w.cb = w_e_end_csum_rs_req;
- } else if (h->command == P_OV_REPLY) {
+ } else if (cmd == P_OV_REPLY) {
e->w.cb = w_e_end_ov_reply;
dec_rs_pending(mdev);
- break;
- }
-
- if (!drbd_rs_begin_io(mdev, sector)) {
- /* we have been interrupted, probably connection lost! */
- D_ASSERT(signal_pending(current));
- goto out_free_e;
+ /* drbd_rs_begin_io done when we sent this request,
+ * but accounting still needs to be done. */
+ goto submit_for_resync;
}
break;
}
e->w.cb = w_e_end_ov_req;
fault_type = DRBD_FAULT_RS_RD;
- /* Eventually this should become asynchronous. Currently it
- * blocks the whole receiver just to delay the reading of a
- * resync data block.
- * the drbd_work_queue mechanism is made for this...
- */
- if (!drbd_rs_begin_io(mdev, sector)) {
- /* we have been interrupted,
- * probably connection lost! */
- D_ASSERT(signal_pending(current));
- goto out_free_e;
- }
break;
-
default:
dev_err(DEV, "unexpected command (%s) in receive_DataRequest\n",
- cmdname(h->command));
+ cmdname(cmd));
fault_type = DRBD_FAULT_MAX;
+ goto out_free_e;
}
- spin_lock_irq(&mdev->req_lock);
- list_add(&e->w.list, &mdev->read_ee);
- spin_unlock_irq(&mdev->req_lock);
+ /* Throttle, drbd_rs_begin_io and submit should become asynchronous
+ * wrt the receiver, but it is not as straightforward as it may seem.
+ * Various places in the resync start and stop logic assume resync
+ * requests are processed in order, requeuing this on the worker thread
+ * introduces a bunch of new code for synchronization between threads.
+ *
+ * Unlimited throttling before drbd_rs_begin_io may stall the resync
+ * "forever", throttling after drbd_rs_begin_io will lock that extent
+ * for application writes for the same time. For now, just throttle
+ * here, where the rest of the code expects the receiver to sleep for
+ * a while, anyways.
+ */
+ /* Throttle before drbd_rs_begin_io, as that locks out application IO;
+ * this defers syncer requests for some time, before letting at least
+ * on request through. The resync controller on the receiving side
+ * will adapt to the incoming rate accordingly.
+ *
+ * We cannot throttle here if remote is Primary/SyncTarget:
+ * we would also throttle its application reads.
+ * In that case, throttling is done on the SyncTarget only.
+ */
+ if (mdev->state.peer != R_PRIMARY && drbd_rs_should_slow_down(mdev))
+ msleep(100);
+ if (drbd_rs_begin_io(mdev, e->sector))
+ goto out_free_e;
+
+submit_for_resync:
+ atomic_add(size >> 9, &mdev->rs_sect_ev);
+
+submit:
inc_unacked(mdev);
+ spin_lock_irq(&mdev->req_lock);
+ list_add_tail(&e->w.list, &mdev->read_ee);
+ spin_unlock_irq(&mdev->req_lock);
if (drbd_submit_ee(mdev, e, READ, fault_type) == 0)
return TRUE;
out_free_e:
- kfree(di);
put_ldev(mdev);
drbd_free_ee(mdev, e);
return FALSE;
return 1;
}
-static int receive_protocol(struct drbd_conf *mdev, struct p_header *h)
+static int receive_protocol(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_protocol *p = (struct p_protocol *)h;
- int header_size, data_size;
+ struct p_protocol *p = &mdev->data.rbuf.protocol;
int p_proto, p_after_sb_0p, p_after_sb_1p, p_after_sb_2p;
int p_want_lose, p_two_primaries, cf;
char p_integrity_alg[SHARED_SECRET_MAX] = "";
- header_size = sizeof(*p) - sizeof(*h);
- data_size = h->length - header_size;
-
- if (drbd_recv(mdev, h->payload, header_size) != header_size)
- return FALSE;
-
p_proto = be32_to_cpu(p->protocol);
p_after_sb_0p = be32_to_cpu(p->after_sb_0p);
p_after_sb_1p = be32_to_cpu(p->after_sb_1p);
return tfm;
}
-static int receive_SyncParam(struct drbd_conf *mdev, struct p_header *h)
+static int receive_SyncParam(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int packet_size)
{
int ok = TRUE;
- struct p_rs_param_89 *p = (struct p_rs_param_89 *)h;
+ struct p_rs_param_95 *p = &mdev->data.rbuf.rs_param_95;
unsigned int header_size, data_size, exp_max_sz;
struct crypto_hash *verify_tfm = NULL;
struct crypto_hash *csums_tfm = NULL;
const int apv = mdev->agreed_pro_version;
+ int *rs_plan_s = NULL;
+ int fifo_size = 0;
exp_max_sz = apv <= 87 ? sizeof(struct p_rs_param)
: apv == 88 ? sizeof(struct p_rs_param)
+ SHARED_SECRET_MAX
- : /* 89 */ sizeof(struct p_rs_param_89);
+ : apv <= 94 ? sizeof(struct p_rs_param_89)
+ : /* apv >= 95 */ sizeof(struct p_rs_param_95);
- if (h->length > exp_max_sz) {
+ if (packet_size > exp_max_sz) {
dev_err(DEV, "SyncParam packet too long: received %u, expected <= %u bytes\n",
- h->length, exp_max_sz);
+ packet_size, exp_max_sz);
return FALSE;
}
if (apv <= 88) {
- header_size = sizeof(struct p_rs_param) - sizeof(*h);
- data_size = h->length - header_size;
- } else /* apv >= 89 */ {
- header_size = sizeof(struct p_rs_param_89) - sizeof(*h);
- data_size = h->length - header_size;
+ header_size = sizeof(struct p_rs_param) - sizeof(struct p_header80);
+ data_size = packet_size - header_size;
+ } else if (apv <= 94) {
+ header_size = sizeof(struct p_rs_param_89) - sizeof(struct p_header80);
+ data_size = packet_size - header_size;
+ D_ASSERT(data_size == 0);
+ } else {
+ header_size = sizeof(struct p_rs_param_95) - sizeof(struct p_header80);
+ data_size = packet_size - header_size;
D_ASSERT(data_size == 0);
}
/* initialize verify_alg and csums_alg */
memset(p->verify_alg, 0, 2 * SHARED_SECRET_MAX);
- if (drbd_recv(mdev, h->payload, header_size) != header_size)
+ if (drbd_recv(mdev, &p->head.payload, header_size) != header_size)
return FALSE;
mdev->sync_conf.rate = be32_to_cpu(p->rate);
}
}
+ if (apv > 94) {
+ mdev->sync_conf.rate = be32_to_cpu(p->rate);
+ mdev->sync_conf.c_plan_ahead = be32_to_cpu(p->c_plan_ahead);
+ mdev->sync_conf.c_delay_target = be32_to_cpu(p->c_delay_target);
+ mdev->sync_conf.c_fill_target = be32_to_cpu(p->c_fill_target);
+ mdev->sync_conf.c_max_rate = be32_to_cpu(p->c_max_rate);
+
+ fifo_size = (mdev->sync_conf.c_plan_ahead * 10 * SLEEP_TIME) / HZ;
+ if (fifo_size != mdev->rs_plan_s.size && fifo_size > 0) {
+ rs_plan_s = kzalloc(sizeof(int) * fifo_size, GFP_KERNEL);
+ if (!rs_plan_s) {
+ dev_err(DEV, "kmalloc of fifo_buffer failed");
+ goto disconnect;
+ }
+ }
+ }
spin_lock(&mdev->peer_seq_lock);
/* lock against drbd_nl_syncer_conf() */
mdev->csums_tfm = csums_tfm;
dev_info(DEV, "using csums-alg: \"%s\"\n", p->csums_alg);
}
+ if (fifo_size != mdev->rs_plan_s.size) {
+ kfree(mdev->rs_plan_s.values);
+ mdev->rs_plan_s.values = rs_plan_s;
+ mdev->rs_plan_s.size = fifo_size;
+ mdev->rs_planed = 0;
+ }
spin_unlock(&mdev->peer_seq_lock);
}
(unsigned long long)a, (unsigned long long)b);
}
-static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
+static int receive_sizes(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_sizes *p = (struct p_sizes *)h;
+ struct p_sizes *p = &mdev->data.rbuf.sizes;
enum determine_dev_size dd = unchanged;
unsigned int max_seg_s;
sector_t p_size, p_usize, my_usize;
int ldsc = 0; /* local disk size changed */
enum dds_flags ddsf;
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
-
p_size = be64_to_cpu(p->d_size);
p_usize = be64_to_cpu(p->u_size);
return TRUE;
}
-static int receive_uuids(struct drbd_conf *mdev, struct p_header *h)
+static int receive_uuids(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_uuids *p = (struct p_uuids *)h;
+ struct p_uuids *p = &mdev->data.rbuf.uuids;
u64 *p_uuid;
int i;
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
-
p_uuid = kmalloc(sizeof(u64)*UI_EXTENDED_SIZE, GFP_NOIO);
for (i = UI_CURRENT; i < UI_EXTENDED_SIZE; i++)
drbd_md_sync(mdev);
}
put_ldev(mdev);
+ } else if (mdev->state.disk < D_INCONSISTENT &&
+ mdev->state.role == R_PRIMARY) {
+ /* I am a diskless primary, the peer just created a new current UUID
+ for me. */
+ drbd_set_ed_uuid(mdev, p_uuid[UI_CURRENT]);
}
/* Before we test for the disk state, we should wait until an eventually
return ms;
}
-static int receive_req_state(struct drbd_conf *mdev, struct p_header *h)
+static int receive_req_state(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_req_state *p = (struct p_req_state *)h;
+ struct p_req_state *p = &mdev->data.rbuf.req_state;
union drbd_state mask, val;
int rv;
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
-
mask.i = be32_to_cpu(p->mask);
val.i = be32_to_cpu(p->val);
return TRUE;
}
-static int receive_state(struct drbd_conf *mdev, struct p_header *h)
+static int receive_state(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_state *p = (struct p_state *)h;
+ struct p_state *p = &mdev->data.rbuf.state;
enum drbd_conns nconn, oconn;
union drbd_state ns, peer_state;
enum drbd_disk_state real_peer_disk;
+ enum chg_state_flags cs_flags;
int rv;
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h)))
- return FALSE;
-
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
-
peer_state.i = be32_to_cpu(p->state);
real_peer_disk = peer_state.disk;
ns.peer_isp = (peer_state.aftr_isp | peer_state.user_isp);
if ((nconn == C_CONNECTED || nconn == C_WF_BITMAP_S) && ns.disk == D_NEGOTIATING)
ns.disk = mdev->new_state_tmp.disk;
-
- rv = _drbd_set_state(mdev, ns, CS_VERBOSE | CS_HARD, NULL);
+ cs_flags = CS_VERBOSE + (oconn < C_CONNECTED && nconn >= C_CONNECTED ? 0 : CS_HARD);
+ if (ns.pdsk == D_CONSISTENT && ns.susp && nconn == C_CONNECTED && oconn < C_CONNECTED &&
+ test_bit(NEW_CUR_UUID, &mdev->flags)) {
+ /* Do not allow tl_restart(resend) for a rebooted peer. We can only allow this
+ for temporal network outages! */
+ spin_unlock_irq(&mdev->req_lock);
+ dev_err(DEV, "Aborting Connect, can not thaw IO with an only Consistent peer\n");
+ tl_clear(mdev);
+ drbd_uuid_new_current(mdev);
+ clear_bit(NEW_CUR_UUID, &mdev->flags);
+ drbd_force_state(mdev, NS2(conn, C_PROTOCOL_ERROR, susp, 0));
+ return FALSE;
+ }
+ rv = _drbd_set_state(mdev, ns, cs_flags, NULL);
ns = mdev->state;
spin_unlock_irq(&mdev->req_lock);
return TRUE;
}
-static int receive_sync_uuid(struct drbd_conf *mdev, struct p_header *h)
+static int receive_sync_uuid(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- struct p_rs_uuid *p = (struct p_rs_uuid *)h;
+ struct p_rs_uuid *p = &mdev->data.rbuf.rs_uuid;
wait_event(mdev->misc_wait,
mdev->state.conn == C_WF_SYNC_UUID ||
/* D_ASSERT( mdev->state.conn == C_WF_SYNC_UUID ); */
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
-
/* Here the _drbd_uuid_ functions are right, current should
_not_ be rotated into the history */
if (get_ldev_if_state(mdev, D_NEGOTIATING)) {
enum receive_bitmap_ret { OK, DONE, FAILED };
static enum receive_bitmap_ret
-receive_bitmap_plain(struct drbd_conf *mdev, struct p_header *h,
- unsigned long *buffer, struct bm_xfer_ctx *c)
+receive_bitmap_plain(struct drbd_conf *mdev, unsigned int data_size,
+ unsigned long *buffer, struct bm_xfer_ctx *c)
{
unsigned num_words = min_t(size_t, BM_PACKET_WORDS, c->bm_words - c->word_offset);
unsigned want = num_words * sizeof(long);
- if (want != h->length) {
- dev_err(DEV, "%s:want (%u) != h->length (%u)\n", __func__, want, h->length);
+ if (want != data_size) {
+ dev_err(DEV, "%s:want (%u) != data_size (%u)\n", __func__, want, data_size);
return FAILED;
}
if (want == 0)
const char *direction, struct bm_xfer_ctx *c)
{
/* what would it take to transfer it "plaintext" */
- unsigned plain = sizeof(struct p_header) *
+ unsigned plain = sizeof(struct p_header80) *
((c->bm_words+BM_PACKET_WORDS-1)/BM_PACKET_WORDS+1)
+ c->bm_words * sizeof(long);
unsigned total = c->bytes[0] + c->bytes[1];
in order to be agnostic to the 32 vs 64 bits issue.
returns 0 on failure, 1 if we successfully received it. */
-static int receive_bitmap(struct drbd_conf *mdev, struct p_header *h)
+static int receive_bitmap(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
struct bm_xfer_ctx c;
void *buffer;
enum receive_bitmap_ret ret;
int ok = FALSE;
+ struct p_header80 *h = &mdev->data.rbuf.header.h80;
wait_event(mdev->misc_wait, !atomic_read(&mdev->ap_bio_cnt));
};
do {
- if (h->command == P_BITMAP) {
- ret = receive_bitmap_plain(mdev, h, buffer, &c);
- } else if (h->command == P_COMPRESSED_BITMAP) {
+ if (cmd == P_BITMAP) {
+ ret = receive_bitmap_plain(mdev, data_size, buffer, &c);
+ } else if (cmd == P_COMPRESSED_BITMAP) {
/* MAYBE: sanity check that we speak proto >= 90,
* and the feature is enabled! */
struct p_compressed_bm *p;
- if (h->length > BM_PACKET_PAYLOAD_BYTES) {
+ if (data_size > BM_PACKET_PAYLOAD_BYTES) {
dev_err(DEV, "ReportCBitmap packet too large\n");
goto out;
}
/* use the page buff */
p = buffer;
memcpy(p, h, sizeof(*h));
- if (drbd_recv(mdev, p->head.payload, h->length) != h->length)
+ if (drbd_recv(mdev, p->head.payload, data_size) != data_size)
goto out;
if (p->head.length <= (sizeof(*p) - sizeof(p->head))) {
dev_err(DEV, "ReportCBitmap packet too small (l:%u)\n", p->head.length);
}
ret = decode_bitmap_c(mdev, p, &c);
} else {
- dev_warn(DEV, "receive_bitmap: h->command neither ReportBitMap nor ReportCBitMap (is 0x%x)", h->command);
+ dev_warn(DEV, "receive_bitmap: cmd neither ReportBitMap nor ReportCBitMap (is 0x%x)", cmd);
goto out;
}
- c.packets[h->command == P_BITMAP]++;
- c.bytes[h->command == P_BITMAP] += sizeof(struct p_header) + h->length;
+ c.packets[cmd == P_BITMAP]++;
+ c.bytes[cmd == P_BITMAP] += sizeof(struct p_header80) + data_size;
if (ret != OK)
break;
- if (!drbd_recv_header(mdev, h))
+ if (!drbd_recv_header(mdev, &cmd, &data_size))
goto out;
} while (ret == OK);
if (ret == FAILED)
return ok;
}
-static int receive_skip(struct drbd_conf *mdev, struct p_header *h)
+static int receive_skip(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
/* TODO zero copy sink :) */
static char sink[128];
int size, want, r;
dev_warn(DEV, "skipping unknown optional packet type %d, l: %d!\n",
- h->command, h->length);
+ cmd, data_size);
- size = h->length;
+ size = data_size;
while (size > 0) {
want = min_t(int, size, sizeof(sink));
r = drbd_recv(mdev, sink, want);
return size == 0;
}
-static int receive_UnplugRemote(struct drbd_conf *mdev, struct p_header *h)
+static int receive_UnplugRemote(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
if (mdev->state.disk >= D_INCONSISTENT)
drbd_kick_lo(mdev);
return TRUE;
}
-static void timeval_sub_us(struct timeval* tv, unsigned int us)
-{
- tv->tv_sec -= us / 1000000;
- us = us % 1000000;
- if (tv->tv_usec > us) {
- tv->tv_usec += 1000000;
- tv->tv_sec--;
- }
- tv->tv_usec -= us;
-}
-
-static void got_delay_probe(struct drbd_conf *mdev, int from, struct p_delay_probe *p)
-{
- struct delay_probe *dp;
- struct list_head *le;
- struct timeval now;
- int seq_num;
- int offset;
- int data_delay;
-
- seq_num = be32_to_cpu(p->seq_num);
- offset = be32_to_cpu(p->offset);
-
- spin_lock(&mdev->peer_seq_lock);
- if (!list_empty(&mdev->delay_probes)) {
- if (from == USE_DATA_SOCKET)
- le = mdev->delay_probes.next;
- else
- le = mdev->delay_probes.prev;
-
- dp = list_entry(le, struct delay_probe, list);
-
- if (dp->seq_num == seq_num) {
- list_del(le);
- spin_unlock(&mdev->peer_seq_lock);
- do_gettimeofday(&now);
- timeval_sub_us(&now, offset);
- data_delay =
- now.tv_usec - dp->time.tv_usec +
- (now.tv_sec - dp->time.tv_sec) * 1000000;
-
- if (data_delay > 0)
- mdev->data_delay = data_delay;
-
- kfree(dp);
- return;
- }
-
- if (dp->seq_num > seq_num) {
- spin_unlock(&mdev->peer_seq_lock);
- dev_warn(DEV, "Previous allocation failure of struct delay_probe?\n");
- return; /* Do not alloca a struct delay_probe.... */
- }
- }
- spin_unlock(&mdev->peer_seq_lock);
-
- dp = kmalloc(sizeof(struct delay_probe), GFP_NOIO);
- if (!dp) {
- dev_warn(DEV, "Failed to allocate a struct delay_probe, do not worry.\n");
- return;
- }
-
- dp->seq_num = seq_num;
- do_gettimeofday(&dp->time);
- timeval_sub_us(&dp->time, offset);
-
- spin_lock(&mdev->peer_seq_lock);
- if (from == USE_DATA_SOCKET)
- list_add(&dp->list, &mdev->delay_probes);
- else
- list_add_tail(&dp->list, &mdev->delay_probes);
- spin_unlock(&mdev->peer_seq_lock);
-}
-
-static int receive_delay_probe(struct drbd_conf *mdev, struct p_header *h)
-{
- struct p_delay_probe *p = (struct p_delay_probe *)h;
-
- ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
- if (drbd_recv(mdev, h->payload, h->length) != h->length)
- return FALSE;
+typedef int (*drbd_cmd_handler_f)(struct drbd_conf *, enum drbd_packets cmd, unsigned int to_receive);
- got_delay_probe(mdev, USE_DATA_SOCKET, p);
- return TRUE;
-}
+struct data_cmd {
+ int expect_payload;
+ size_t pkt_size;
+ drbd_cmd_handler_f function;
+};
-typedef int (*drbd_cmd_handler_f)(struct drbd_conf *, struct p_header *);
-
-static drbd_cmd_handler_f drbd_default_handler[] = {
- [P_DATA] = receive_Data,
- [P_DATA_REPLY] = receive_DataReply,
- [P_RS_DATA_REPLY] = receive_RSDataReply,
- [P_BARRIER] = receive_Barrier,
- [P_BITMAP] = receive_bitmap,
- [P_COMPRESSED_BITMAP] = receive_bitmap,
- [P_UNPLUG_REMOTE] = receive_UnplugRemote,
- [P_DATA_REQUEST] = receive_DataRequest,
- [P_RS_DATA_REQUEST] = receive_DataRequest,
- [P_SYNC_PARAM] = receive_SyncParam,
- [P_SYNC_PARAM89] = receive_SyncParam,
- [P_PROTOCOL] = receive_protocol,
- [P_UUIDS] = receive_uuids,
- [P_SIZES] = receive_sizes,
- [P_STATE] = receive_state,
- [P_STATE_CHG_REQ] = receive_req_state,
- [P_SYNC_UUID] = receive_sync_uuid,
- [P_OV_REQUEST] = receive_DataRequest,
- [P_OV_REPLY] = receive_DataRequest,
- [P_CSUM_RS_REQUEST] = receive_DataRequest,
- [P_DELAY_PROBE] = receive_delay_probe,
+static struct data_cmd drbd_cmd_handler[] = {
+ [P_DATA] = { 1, sizeof(struct p_data), receive_Data },
+ [P_DATA_REPLY] = { 1, sizeof(struct p_data), receive_DataReply },
+ [P_RS_DATA_REPLY] = { 1, sizeof(struct p_data), receive_RSDataReply } ,
+ [P_BARRIER] = { 0, sizeof(struct p_barrier), receive_Barrier } ,
+ [P_BITMAP] = { 1, sizeof(struct p_header80), receive_bitmap } ,
+ [P_COMPRESSED_BITMAP] = { 1, sizeof(struct p_header80), receive_bitmap } ,
+ [P_UNPLUG_REMOTE] = { 0, sizeof(struct p_header80), receive_UnplugRemote },
+ [P_DATA_REQUEST] = { 0, sizeof(struct p_block_req), receive_DataRequest },
+ [P_RS_DATA_REQUEST] = { 0, sizeof(struct p_block_req), receive_DataRequest },
+ [P_SYNC_PARAM] = { 1, sizeof(struct p_header80), receive_SyncParam },
+ [P_SYNC_PARAM89] = { 1, sizeof(struct p_header80), receive_SyncParam },
+ [P_PROTOCOL] = { 1, sizeof(struct p_protocol), receive_protocol },
+ [P_UUIDS] = { 0, sizeof(struct p_uuids), receive_uuids },
+ [P_SIZES] = { 0, sizeof(struct p_sizes), receive_sizes },
+ [P_STATE] = { 0, sizeof(struct p_state), receive_state },
+ [P_STATE_CHG_REQ] = { 0, sizeof(struct p_req_state), receive_req_state },
+ [P_SYNC_UUID] = { 0, sizeof(struct p_rs_uuid), receive_sync_uuid },
+ [P_OV_REQUEST] = { 0, sizeof(struct p_block_req), receive_DataRequest },
+ [P_OV_REPLY] = { 1, sizeof(struct p_block_req), receive_DataRequest },
+ [P_CSUM_RS_REQUEST] = { 1, sizeof(struct p_block_req), receive_DataRequest },
+ [P_DELAY_PROBE] = { 0, sizeof(struct p_delay_probe93), receive_skip },
/* anything missing from this table is in
* the asender_tbl, see get_asender_cmd */
- [P_MAX_CMD] = NULL,
+ [P_MAX_CMD] = { 0, 0, NULL },
};
-static drbd_cmd_handler_f *drbd_cmd_handler = drbd_default_handler;
-static drbd_cmd_handler_f *drbd_opt_cmd_handler;
+/* All handler functions that expect a sub-header get that sub-heder in
+ mdev->data.rbuf.header.head.payload.
+
+ Usually in mdev->data.rbuf.header.head the callback can find the usual
+ p_header, but they may not rely on that. Since there is also p_header95 !
+ */
static void drbdd(struct drbd_conf *mdev)
{
- drbd_cmd_handler_f handler;
- struct p_header *header = &mdev->data.rbuf.header;
+ union p_header *header = &mdev->data.rbuf.header;
+ unsigned int packet_size;
+ enum drbd_packets cmd;
+ size_t shs; /* sub header size */
+ int rv;
while (get_t_state(&mdev->receiver) == Running) {
drbd_thread_current_set_cpu(mdev);
- if (!drbd_recv_header(mdev, header)) {
- drbd_force_state(mdev, NS(conn, C_PROTOCOL_ERROR));
- break;
- }
+ if (!drbd_recv_header(mdev, &cmd, &packet_size))
+ goto err_out;
- if (header->command < P_MAX_CMD)
- handler = drbd_cmd_handler[header->command];
- else if (P_MAY_IGNORE < header->command
- && header->command < P_MAX_OPT_CMD)
- handler = drbd_opt_cmd_handler[header->command-P_MAY_IGNORE];
- else if (header->command > P_MAX_OPT_CMD)
- handler = receive_skip;
- else
- handler = NULL;
+ if (unlikely(cmd >= P_MAX_CMD || !drbd_cmd_handler[cmd].function)) {
+ dev_err(DEV, "unknown packet type %d, l: %d!\n", cmd, packet_size);
+ goto err_out;
+ }
- if (unlikely(!handler)) {
- dev_err(DEV, "unknown packet type %d, l: %d!\n",
- header->command, header->length);
- drbd_force_state(mdev, NS(conn, C_PROTOCOL_ERROR));
- break;
+ shs = drbd_cmd_handler[cmd].pkt_size - sizeof(union p_header);
+ rv = drbd_recv(mdev, &header->h80.payload, shs);
+ if (unlikely(rv != shs)) {
+ dev_err(DEV, "short read while reading sub header: rv=%d\n", rv);
+ goto err_out;
}
- if (unlikely(!handler(mdev, header))) {
- dev_err(DEV, "error receiving %s, l: %d!\n",
- cmdname(header->command), header->length);
- drbd_force_state(mdev, NS(conn, C_PROTOCOL_ERROR));
- break;
+
+ if (packet_size - shs > 0 && !drbd_cmd_handler[cmd].expect_payload) {
+ dev_err(DEV, "No payload expected %s l:%d\n", cmdname(cmd), packet_size);
+ goto err_out;
}
- }
-}
-static void drbd_fail_pending_reads(struct drbd_conf *mdev)
-{
- struct hlist_head *slot;
- struct hlist_node *pos;
- struct hlist_node *tmp;
- struct drbd_request *req;
- int i;
+ rv = drbd_cmd_handler[cmd].function(mdev, cmd, packet_size - shs);
- /*
- * Application READ requests
- */
- spin_lock_irq(&mdev->req_lock);
- for (i = 0; i < APP_R_HSIZE; i++) {
- slot = mdev->app_reads_hash+i;
- hlist_for_each_entry_safe(req, pos, tmp, slot, colision) {
- /* it may (but should not any longer!)
- * be on the work queue; if that assert triggers,
- * we need to also grab the
- * spin_lock_irq(&mdev->data.work.q_lock);
- * and list_del_init here. */
- D_ASSERT(list_empty(&req->w.list));
- /* It would be nice to complete outside of spinlock.
- * But this is easier for now. */
- _req_mod(req, connection_lost_while_pending);
+ if (unlikely(!rv)) {
+ dev_err(DEV, "error receiving %s, l: %d!\n",
+ cmdname(cmd), packet_size);
+ goto err_out;
}
}
- for (i = 0; i < APP_R_HSIZE; i++)
- if (!hlist_empty(mdev->app_reads_hash+i))
- dev_warn(DEV, "ASSERT FAILED: app_reads_hash[%d].first: "
- "%p, should be NULL\n", i, mdev->app_reads_hash[i].first);
- memset(mdev->app_reads_hash, 0, APP_R_HSIZE*sizeof(void *));
- spin_unlock_irq(&mdev->req_lock);
+ if (0) {
+ err_out:
+ drbd_force_state(mdev, NS(conn, C_PROTOCOL_ERROR));
+ }
}
void drbd_flush_workqueue(struct drbd_conf *mdev)
wait_for_completion(&barr.done);
}
+void drbd_free_tl_hash(struct drbd_conf *mdev)
+{
+ struct hlist_head *h;
+
+ spin_lock_irq(&mdev->req_lock);
+
+ if (!mdev->tl_hash || mdev->state.conn != C_STANDALONE) {
+ spin_unlock_irq(&mdev->req_lock);
+ return;
+ }
+ /* paranoia code */
+ for (h = mdev->ee_hash; h < mdev->ee_hash + mdev->ee_hash_s; h++)
+ if (h->first)
+ dev_err(DEV, "ASSERT FAILED ee_hash[%u].first == %p, expected NULL\n",
+ (int)(h - mdev->ee_hash), h->first);
+ kfree(mdev->ee_hash);
+ mdev->ee_hash = NULL;
+ mdev->ee_hash_s = 0;
+
+ /* paranoia code */
+ for (h = mdev->tl_hash; h < mdev->tl_hash + mdev->tl_hash_s; h++)
+ if (h->first)
+ dev_err(DEV, "ASSERT FAILED tl_hash[%u] == %p, expected NULL\n",
+ (int)(h - mdev->tl_hash), h->first);
+ kfree(mdev->tl_hash);
+ mdev->tl_hash = NULL;
+ mdev->tl_hash_s = 0;
+ spin_unlock_irq(&mdev->req_lock);
+}
+
static void drbd_disconnect(struct drbd_conf *mdev)
{
enum drbd_fencing_p fp;
drbd_thread_stop(&mdev->asender);
drbd_free_sock(mdev);
+ /* wait for current activity to cease. */
spin_lock_irq(&mdev->req_lock);
_drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
_drbd_wait_ee_list_empty(mdev, &mdev->sync_ee);
/* make sure syncer is stopped and w_resume_next_sg queued */
del_timer_sync(&mdev->resync_timer);
- set_bit(STOP_SYNC_TIMER, &mdev->flags);
resync_timer_fn((unsigned long)mdev);
/* wait for all w_e_end_data_req, w_e_end_rsdata_req, w_send_barrier,
if (!mdev->state.susp)
tl_clear(mdev);
- drbd_fail_pending_reads(mdev);
-
dev_info(DEV, "Connection closed\n");
drbd_md_sync(mdev);
put_ldev(mdev);
}
- if (mdev->state.role == R_PRIMARY) {
- if (fp >= FP_RESOURCE && mdev->state.pdsk >= D_UNKNOWN) {
- enum drbd_disk_state nps = drbd_try_outdate_peer(mdev);
- drbd_request_state(mdev, NS(pdsk, nps));
- }
- }
+ if (mdev->state.role == R_PRIMARY && fp >= FP_RESOURCE && mdev->state.pdsk >= D_UNKNOWN)
+ drbd_try_outdate_peer_async(mdev);
spin_lock_irq(&mdev->req_lock);
os = mdev->state;
spin_unlock_irq(&mdev->req_lock);
if (os.conn == C_DISCONNECTING) {
- struct hlist_head *h;
- wait_event(mdev->misc_wait, atomic_read(&mdev->net_cnt) == 0);
-
- /* we must not free the tl_hash
- * while application io is still on the fly */
- wait_event(mdev->misc_wait, atomic_read(&mdev->ap_bio_cnt) == 0);
+ wait_event(mdev->net_cnt_wait, atomic_read(&mdev->net_cnt) == 0);
- spin_lock_irq(&mdev->req_lock);
- /* paranoia code */
- for (h = mdev->ee_hash; h < mdev->ee_hash + mdev->ee_hash_s; h++)
- if (h->first)
- dev_err(DEV, "ASSERT FAILED ee_hash[%u].first == %p, expected NULL\n",
- (int)(h - mdev->ee_hash), h->first);
- kfree(mdev->ee_hash);
- mdev->ee_hash = NULL;
- mdev->ee_hash_s = 0;
-
- /* paranoia code */
- for (h = mdev->tl_hash; h < mdev->tl_hash + mdev->tl_hash_s; h++)
- if (h->first)
- dev_err(DEV, "ASSERT FAILED tl_hash[%u] == %p, expected NULL\n",
- (int)(h - mdev->tl_hash), h->first);
- kfree(mdev->tl_hash);
- mdev->tl_hash = NULL;
- mdev->tl_hash_s = 0;
- spin_unlock_irq(&mdev->req_lock);
+ if (!mdev->state.susp) {
+ /* we must not free the tl_hash
+ * while application io is still on the fly */
+ wait_event(mdev->misc_wait, !atomic_read(&mdev->ap_bio_cnt));
+ drbd_free_tl_hash(mdev);
+ }
crypto_free_hash(mdev->cram_hmac_tfm);
mdev->cram_hmac_tfm = NULL;
i = drbd_release_ee(mdev, &mdev->net_ee);
if (i)
dev_info(DEV, "net_ee not empty, killed %u entries\n", i);
+ i = atomic_read(&mdev->pp_in_use_by_net);
+ if (i)
+ dev_info(DEV, "pp_in_use_by_net = %d, expected 0\n", i);
i = atomic_read(&mdev->pp_in_use);
if (i)
dev_info(DEV, "pp_in_use = %d, expected 0\n", i);
p->protocol_min = cpu_to_be32(PRO_VERSION_MIN);
p->protocol_max = cpu_to_be32(PRO_VERSION_MAX);
ok = _drbd_send_cmd( mdev, mdev->data.socket, P_HAND_SHAKE,
- (struct p_header *)p, sizeof(*p), 0 );
+ (struct p_header80 *)p, sizeof(*p), 0 );
mutex_unlock(&mdev->data.mutex);
return ok;
}
{
/* ASSERT current == mdev->receiver ... */
struct p_handshake *p = &mdev->data.rbuf.handshake;
- const int expect = sizeof(struct p_handshake)
- -sizeof(struct p_header);
+ const int expect = sizeof(struct p_handshake) - sizeof(struct p_header80);
+ unsigned int length;
+ enum drbd_packets cmd;
int rv;
rv = drbd_send_handshake(mdev);
if (!rv)
return 0;
- rv = drbd_recv_header(mdev, &p->head);
+ rv = drbd_recv_header(mdev, &cmd, &length);
if (!rv)
return 0;
- if (p->head.command != P_HAND_SHAKE) {
+ if (cmd != P_HAND_SHAKE) {
dev_err(DEV, "expected HandShake packet, received: %s (0x%04x)\n",
- cmdname(p->head.command), p->head.command);
+ cmdname(cmd), cmd);
return -1;
}
- if (p->head.length != expect) {
+ if (length != expect) {
dev_err(DEV, "expected HandShake length: %u, received: %u\n",
- expect, p->head.length);
+ expect, length);
return -1;
}
char *response = NULL;
char *right_response = NULL;
char *peers_ch = NULL;
- struct p_header p;
unsigned int key_len = strlen(mdev->net_conf->shared_secret);
unsigned int resp_size;
struct hash_desc desc;
+ enum drbd_packets cmd;
+ unsigned int length;
int rv;
desc.tfm = mdev->cram_hmac_tfm;
if (!rv)
goto fail;
- rv = drbd_recv_header(mdev, &p);
+ rv = drbd_recv_header(mdev, &cmd, &length);
if (!rv)
goto fail;
- if (p.command != P_AUTH_CHALLENGE) {
+ if (cmd != P_AUTH_CHALLENGE) {
dev_err(DEV, "expected AuthChallenge packet, received: %s (0x%04x)\n",
- cmdname(p.command), p.command);
+ cmdname(cmd), cmd);
rv = 0;
goto fail;
}
- if (p.length > CHALLENGE_LEN*2) {
+ if (length > CHALLENGE_LEN * 2) {
dev_err(DEV, "expected AuthChallenge payload too big.\n");
rv = -1;
goto fail;
}
- peers_ch = kmalloc(p.length, GFP_NOIO);
+ peers_ch = kmalloc(length, GFP_NOIO);
if (peers_ch == NULL) {
dev_err(DEV, "kmalloc of peers_ch failed\n");
rv = -1;
goto fail;
}
- rv = drbd_recv(mdev, peers_ch, p.length);
+ rv = drbd_recv(mdev, peers_ch, length);
- if (rv != p.length) {
+ if (rv != length) {
dev_err(DEV, "short read AuthChallenge: l=%u\n", rv);
rv = 0;
goto fail;
}
sg_init_table(&sg, 1);
- sg_set_buf(&sg, peers_ch, p.length);
+ sg_set_buf(&sg, peers_ch, length);
rv = crypto_hash_digest(&desc, &sg, sg.length, response);
if (rv) {
if (!rv)
goto fail;
- rv = drbd_recv_header(mdev, &p);
+ rv = drbd_recv_header(mdev, &cmd, &length);
if (!rv)
goto fail;
- if (p.command != P_AUTH_RESPONSE) {
+ if (cmd != P_AUTH_RESPONSE) {
dev_err(DEV, "expected AuthResponse packet, received: %s (0x%04x)\n",
- cmdname(p.command), p.command);
+ cmdname(cmd), cmd);
rv = 0;
goto fail;
}
- if (p.length != resp_size) {
+ if (length != resp_size) {
dev_err(DEV, "expected AuthResponse payload of wrong size\n");
rv = 0;
goto fail;
/* ********* acknowledge sender ******** */
-static int got_RqSReply(struct drbd_conf *mdev, struct p_header *h)
+static int got_RqSReply(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_req_state_reply *p = (struct p_req_state_reply *)h;
return TRUE;
}
-static int got_Ping(struct drbd_conf *mdev, struct p_header *h)
+static int got_Ping(struct drbd_conf *mdev, struct p_header80 *h)
{
return drbd_send_ping_ack(mdev);
}
-static int got_PingAck(struct drbd_conf *mdev, struct p_header *h)
+static int got_PingAck(struct drbd_conf *mdev, struct p_header80 *h)
{
/* restore idle timeout */
mdev->meta.socket->sk->sk_rcvtimeo = mdev->net_conf->ping_int*HZ;
return TRUE;
}
-static int got_IsInSync(struct drbd_conf *mdev, struct p_header *h)
+static int got_IsInSync(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_block_ack *p = (struct p_block_ack *)h;
sector_t sector = be64_to_cpu(p->sector);
/* rs_same_csums is supposed to count in units of BM_BLOCK_SIZE */
mdev->rs_same_csum += (blksize >> BM_BLOCK_SHIFT);
dec_rs_pending(mdev);
+ atomic_add(blksize >> 9, &mdev->rs_sect_in);
return TRUE;
}
return TRUE;
}
-static int got_BlockAck(struct drbd_conf *mdev, struct p_header *h)
+static int got_BlockAck(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_block_ack *p = (struct p_block_ack *)h;
sector_t sector = be64_to_cpu(p->sector);
_ack_id_to_req, __func__ , what);
}
-static int got_NegAck(struct drbd_conf *mdev, struct p_header *h)
+static int got_NegAck(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_block_ack *p = (struct p_block_ack *)h;
sector_t sector = be64_to_cpu(p->sector);
_ack_id_to_req, __func__ , neg_acked);
}
-static int got_NegDReply(struct drbd_conf *mdev, struct p_header *h)
+static int got_NegDReply(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_block_ack *p = (struct p_block_ack *)h;
sector_t sector = be64_to_cpu(p->sector);
_ar_id_to_req, __func__ , neg_acked);
}
-static int got_NegRSDReply(struct drbd_conf *mdev, struct p_header *h)
+static int got_NegRSDReply(struct drbd_conf *mdev, struct p_header80 *h)
{
sector_t sector;
int size;
return TRUE;
}
-static int got_BarrierAck(struct drbd_conf *mdev, struct p_header *h)
+static int got_BarrierAck(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_barrier_ack *p = (struct p_barrier_ack *)h;
return TRUE;
}
-static int got_OVResult(struct drbd_conf *mdev, struct p_header *h)
+static int got_OVResult(struct drbd_conf *mdev, struct p_header80 *h)
{
struct p_block_ack *p = (struct p_block_ack *)h;
struct drbd_work *w;
return TRUE;
}
-static int got_delay_probe_m(struct drbd_conf *mdev, struct p_header *h)
+static int got_skip(struct drbd_conf *mdev, struct p_header80 *h)
{
- struct p_delay_probe *p = (struct p_delay_probe *)h;
-
- got_delay_probe(mdev, USE_META_SOCKET, p);
return TRUE;
}
struct asender_cmd {
size_t pkt_size;
- int (*process)(struct drbd_conf *mdev, struct p_header *h);
+ int (*process)(struct drbd_conf *mdev, struct p_header80 *h);
};
static struct asender_cmd *get_asender_cmd(int cmd)
/* anything missing from this table is in
* the drbd_cmd_handler (drbd_default_handler) table,
* see the beginning of drbdd() */
- [P_PING] = { sizeof(struct p_header), got_Ping },
- [P_PING_ACK] = { sizeof(struct p_header), got_PingAck },
+ [P_PING] = { sizeof(struct p_header80), got_Ping },
+ [P_PING_ACK] = { sizeof(struct p_header80), got_PingAck },
[P_RECV_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
[P_WRITE_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
[P_RS_WRITE_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
[P_BARRIER_ACK] = { sizeof(struct p_barrier_ack), got_BarrierAck },
[P_STATE_CHG_REPLY] = { sizeof(struct p_req_state_reply), got_RqSReply },
[P_RS_IS_IN_SYNC] = { sizeof(struct p_block_ack), got_IsInSync },
- [P_DELAY_PROBE] = { sizeof(struct p_delay_probe), got_delay_probe_m },
+ [P_DELAY_PROBE] = { sizeof(struct p_delay_probe93), got_skip },
[P_MAX_CMD] = { 0, NULL },
};
if (cmd > P_MAX_CMD || asender_tbl[cmd].process == NULL)
int drbd_asender(struct drbd_thread *thi)
{
struct drbd_conf *mdev = thi->mdev;
- struct p_header *h = &mdev->meta.rbuf.header;
+ struct p_header80 *h = &mdev->meta.rbuf.header.h80;
struct asender_cmd *cmd = NULL;
int rv, len;
void *buf = h;
int received = 0;
- int expect = sizeof(struct p_header);
+ int expect = sizeof(struct p_header80);
int empty;
sprintf(current->comm, "drbd%d_asender", mdev_to_minor(mdev));
goto disconnect;
}
expect = cmd->pkt_size;
- ERR_IF(len != expect-sizeof(struct p_header))
+ ERR_IF(len != expect-sizeof(struct p_header80))
goto reconnect;
}
if (received == expect) {
buf = h;
received = 0;
- expect = sizeof(struct p_header);
+ expect = sizeof(struct p_header80);
cmd = NULL;
}
}
projects / deliverable / linux.git / blobdiff