drbd: New sync_param packet, that includes the parameters of the new controller

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 f84ffb1..fd2cdd4 100644 (file)
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -451,6 +451,17 @@ struct p_rs_param_89 {
        char csums_alg[SHARED_SECRET_MAX];
 } __packed;
 
+struct p_rs_param_95 {
+       struct p_header head;
+       u32 rate;
+       char verify_alg[SHARED_SECRET_MAX];
+       char csums_alg[SHARED_SECRET_MAX];
+       u32 c_plan_ahead;
+       u32 c_delay_target;
+       u32 c_fill_target;
+       u32 c_max_rate;
+} __packed;
+
 enum drbd_conn_flags {
        CF_WANT_LOSE = 1,
        CF_DRY_RUN = 2,
@@ -610,6 +621,7 @@ union p_polymorph {
         struct p_barrier         barrier;
         struct p_barrier_ack     barrier_ack;
         struct p_rs_param_89     rs_param_89;
+        struct p_rs_param_95     rs_param_95;
         struct p_protocol        protocol;
         struct p_sizes           sizes;
         struct p_uuids           uuids;
@@ -1268,6 +1280,8 @@ struct bm_extent {
  * Bit 1 ==> local node thinks this block needs to be synced.
  */
 
+#define SLEEP_TIME (HZ/10)
+
 #define BM_BLOCK_SHIFT  12                      /* 4k per bit */
 #define BM_BLOCK_SIZE   (1<<BM_BLOCK_SHIFT)
 /* (9+3) : 512 bytes @ 8 bits; representing 16M storage

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 5a484c1..bff4f59 100644 (file)
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1713,7 +1713,7 @@ int drbd_send_cmd2(struct drbd_conf *mdev, enum drbd_packets cmd, char *data,
 
 int drbd_send_sync_param(struct drbd_conf *mdev, struct syncer_conf *sc)
 {
-       struct p_rs_param_89 *p;
+       struct p_rs_param_95 *p;
        struct socket *sock;
        int size, rv;
        const int apv = mdev->agreed_pro_version;
@@ -1721,7 +1721,8 @@ int drbd_send_sync_param(struct drbd_conf *mdev, struct syncer_conf *sc)
        size = apv <= 87 ? sizeof(struct p_rs_param)
                : apv == 88 ? sizeof(struct p_rs_param)
                        + strlen(mdev->sync_conf.verify_alg) + 1
-               : /* 89 */    sizeof(struct p_rs_param_89);
+               : apv <= 94 ? sizeof(struct p_rs_param_89)
+               : /* apv >= 95 */ sizeof(struct p_rs_param_95);
 
        /* used from admin command context and receiver/worker context.
         * to avoid kmalloc, grab the socket right here,
@@ -1732,12 +1733,16 @@ int drbd_send_sync_param(struct drbd_conf *mdev, struct syncer_conf *sc)
        if (likely(sock != NULL)) {
                enum drbd_packets cmd = apv >= 89 ? P_SYNC_PARAM89 : P_SYNC_PARAM;
 
-               p = &mdev->data.sbuf.rs_param_89;
+               p = &mdev->data.sbuf.rs_param_95;
 
                /* initialize verify_alg and csums_alg */
                memset(p->verify_alg, 0, 2 * SHARED_SECRET_MAX);
 
                p->rate = cpu_to_be32(sc->rate);
+               p->c_plan_ahead = cpu_to_be32(sc->c_plan_ahead);
+               p->c_delay_target = cpu_to_be32(sc->c_delay_target);
+               p->c_fill_target = cpu_to_be32(sc->c_fill_target);
+               p->c_max_rate = cpu_to_be32(sc->c_max_rate);
 
                if (apv >= 88)
                        strcpy(p->verify_alg, mdev->sync_conf.verify_alg);

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 5e49ee7..34bea97 100644 (file)
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -2805,7 +2805,7 @@ struct crypto_hash *drbd_crypto_alloc_digest_safe(const struct drbd_conf *mdev,
 static int receive_SyncParam(struct drbd_conf *mdev, struct p_header *h)
 {
        int ok = TRUE;
-       struct p_rs_param_89 *p = (struct p_rs_param_89 *)h;
+       struct p_rs_param_95 *p = (struct p_rs_param_95 *)h;
        unsigned int header_size, data_size, exp_max_sz;
        struct crypto_hash *verify_tfm = NULL;
        struct crypto_hash *csums_tfm = NULL;
@@ -2814,7 +2814,8 @@ static int receive_SyncParam(struct drbd_conf *mdev, struct p_header *h)
        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) {
                dev_err(DEV, "SyncParam packet too long: received %u, expected <= %u bytes\n",
@@ -2825,10 +2826,14 @@ static int receive_SyncParam(struct drbd_conf *mdev, struct p_header *h)
        if (apv <= 88) {
                header_size = sizeof(struct p_rs_param) - sizeof(*h);
                data_size   = h->length  - header_size;
-       } else /* apv >= 89 */ {
+       } else if (apv <= 94) {
                header_size = sizeof(struct p_rs_param_89) - sizeof(*h);
                data_size   = h->length  - header_size;
                D_ASSERT(data_size == 0);
+       } else {
+               header_size = sizeof(struct p_rs_param_95) - sizeof(*h);
+               data_size   = h->length  - header_size;
+               D_ASSERT(data_size == 0);
        }
 
        /* initialize verify_alg and csums_alg */
@@ -2893,6 +2898,13 @@ static int receive_SyncParam(struct drbd_conf *mdev, struct p_header *h)
                        }
                }
 
+               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);
+               }
 
                spin_lock(&mdev->peer_seq_lock);
                /* lock against drbd_nl_syncer_conf() */

diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 3c1e884..d94720f 100644 (file)
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -39,8 +39,6 @@
 #include "drbd_int.h"
 #include "drbd_req.h"
 
-#define SLEEP_TIME (HZ/10)
-
 static int w_make_ov_request(struct drbd_conf *mdev, struct drbd_work *w, int cancel);