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Subject[PATCH 14/16] drbd: Converted drbd_nl_(net_conf|disconnect)() from mdev to tconn
Date
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
drivers/block/drbd/drbd_int.h | 2 +
drivers/block/drbd/drbd_main.c | 2 +-
drivers/block/drbd/drbd_nl.c | 120 ++++++++++++++++++++--------------------
3 files changed, 63 insertions(+), 61 deletions(-)
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 8ef5b82..2ef168c 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -170,6 +170,7 @@ drbd_insert_fault(struct drbd_conf *mdev, unsigned int type) {

extern struct drbd_conf **minor_table;
extern struct ratelimit_state drbd_ratelimit_state;
+extern struct list_head drbd_tconns;

/* on the wire */
enum drbd_packet {
@@ -1474,6 +1475,7 @@ extern wait_queue_head_t drbd_pp_wait;

extern rwlock_t global_state_lock;

+extern int conn_lowest_minor(struct drbd_tconn *tconn);
extern struct drbd_conf *drbd_new_device(unsigned int minor);
extern void drbd_free_mdev(struct drbd_conf *mdev);

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 689f23f..004118e 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -615,7 +615,7 @@ char *drbd_task_to_thread_name(struct drbd_tconn *tconn, struct task_struct *tas
}

#ifdef CONFIG_SMP
-static int conn_lowest_minor(struct drbd_tconn *tconn)
+int conn_lowest_minor(struct drbd_tconn *tconn)
{
int minor = 0;
idr_get_next(&tconn->volumes, &minor);
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 27a43d1..455a51d 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1326,7 +1326,7 @@ static int drbd_nl_detach(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
return 0;
}

-static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
+static int drbd_nl_net_conf(struct drbd_tconn *tconn, struct drbd_nl_cfg_req *nlp,
struct drbd_nl_cfg_reply *reply)
{
int i;
@@ -1335,16 +1335,17 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
struct crypto_hash *tfm = NULL;
struct crypto_hash *integrity_w_tfm = NULL;
struct crypto_hash *integrity_r_tfm = NULL;
- struct drbd_conf *odev;
+ struct drbd_conf *mdev;
char hmac_name[CRYPTO_MAX_ALG_NAME];
void *int_dig_out = NULL;
void *int_dig_in = NULL;
void *int_dig_vv = NULL;
+ struct drbd_tconn *oconn;
struct sockaddr *new_my_addr, *new_peer_addr, *taken_addr;

- conn_reconfig_start(mdev->tconn);
+ conn_reconfig_start(tconn);

- if (mdev->state.conn > C_STANDALONE) {
+ if (tconn->cstate > C_STANDALONE) {
retcode = ERR_NET_CONFIGURED;
goto fail;
}
@@ -1387,13 +1388,25 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
goto fail;
}

- if (get_ldev(mdev)) {
- enum drbd_fencing_p fp = mdev->ldev->dc.fencing;
- put_ldev(mdev);
- if (new_conf->wire_protocol == DRBD_PROT_A && fp == FP_STONITH) {
- retcode = ERR_STONITH_AND_PROT_A;
+ idr_for_each_entry(&tconn->volumes, mdev, i) {
+ if (get_ldev(mdev)) {
+ enum drbd_fencing_p fp = mdev->ldev->dc.fencing;
+ put_ldev(mdev);
+ if (new_conf->wire_protocol == DRBD_PROT_A && fp == FP_STONITH) {
+ retcode = ERR_STONITH_AND_PROT_A;
+ goto fail;
+ }
+ }
+ if (mdev->state.role == R_PRIMARY && new_conf->want_lose) {
+ retcode = ERR_DISCARD;
goto fail;
}
+ if (!mdev->bitmap) {
+ if(drbd_bm_init(mdev)) {
+ retcode = ERR_NOMEM;
+ goto fail;
+ }
+ }
}

if (new_conf->on_congestion != OC_BLOCK && new_conf->wire_protocol != DRBD_PROT_A) {
@@ -1401,31 +1414,25 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
goto fail;
}

- if (mdev->state.role == R_PRIMARY && new_conf->want_lose) {
- retcode = ERR_DISCARD;
- goto fail;
- }
-
retcode = NO_ERROR;

new_my_addr = (struct sockaddr *)&new_conf->my_addr;
new_peer_addr = (struct sockaddr *)&new_conf->peer_addr;
- for (i = 0; i < minor_count; i++) {
- odev = minor_to_mdev(i);
- if (!odev || odev == mdev)
+ list_for_each_entry(oconn, &drbd_tconns, all_tconn) {
+ if (oconn == tconn)
continue;
- if (get_net_conf(odev->tconn)) {
- taken_addr = (struct sockaddr *)&odev->tconn->net_conf->my_addr;
- if (new_conf->my_addr_len == odev->tconn->net_conf->my_addr_len &&
+ if (get_net_conf(oconn)) {
+ taken_addr = (struct sockaddr *)&oconn->net_conf->my_addr;
+ if (new_conf->my_addr_len == oconn->net_conf->my_addr_len &&
!memcmp(new_my_addr, taken_addr, new_conf->my_addr_len))
retcode = ERR_LOCAL_ADDR;

- taken_addr = (struct sockaddr *)&odev->tconn->net_conf->peer_addr;
- if (new_conf->peer_addr_len == odev->tconn->net_conf->peer_addr_len &&
+ taken_addr = (struct sockaddr *)&oconn->net_conf->peer_addr;
+ if (new_conf->peer_addr_len == oconn->net_conf->peer_addr_len &&
!memcmp(new_peer_addr, taken_addr, new_conf->peer_addr_len))
retcode = ERR_PEER_ADDR;

- put_net_conf(odev->tconn);
+ put_net_conf(oconn);
if (retcode != NO_ERROR)
goto fail;
}
@@ -1470,6 +1477,7 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,

((char *)new_conf->shared_secret)[SHARED_SECRET_MAX-1] = 0;

+ /* allocation not in the IO path, cqueue thread context */
if (integrity_w_tfm) {
i = crypto_hash_digestsize(integrity_w_tfm);
int_dig_out = kmalloc(i, GFP_KERNEL);
@@ -1489,46 +1497,40 @@ static int drbd_nl_net_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
}
}

- if (!mdev->bitmap) {
- if(drbd_bm_init(mdev)) {
- retcode = ERR_NOMEM;
- goto fail;
- }
- }
-
- drbd_flush_workqueue(mdev);
- spin_lock_irq(&mdev->tconn->req_lock);
- if (mdev->tconn->net_conf != NULL) {
+ conn_flush_workqueue(tconn);
+ spin_lock_irq(&tconn->req_lock);
+ if (tconn->net_conf != NULL) {
retcode = ERR_NET_CONFIGURED;
- spin_unlock_irq(&mdev->tconn->req_lock);
+ spin_unlock_irq(&tconn->req_lock);
goto fail;
}
- mdev->tconn->net_conf = new_conf;
+ tconn->net_conf = new_conf;

- mdev->send_cnt = 0;
- mdev->recv_cnt = 0;
-
- crypto_free_hash(mdev->tconn->cram_hmac_tfm);
- mdev->tconn->cram_hmac_tfm = tfm;
+ crypto_free_hash(tconn->cram_hmac_tfm);
+ tconn->cram_hmac_tfm = tfm;

- crypto_free_hash(mdev->tconn->integrity_w_tfm);
- mdev->tconn->integrity_w_tfm = integrity_w_tfm;
+ crypto_free_hash(tconn->integrity_w_tfm);
+ tconn->integrity_w_tfm = integrity_w_tfm;

- crypto_free_hash(mdev->tconn->integrity_r_tfm);
- mdev->tconn->integrity_r_tfm = integrity_r_tfm;
+ crypto_free_hash(tconn->integrity_r_tfm);
+ tconn->integrity_r_tfm = integrity_r_tfm;

- kfree(mdev->tconn->int_dig_out);
- kfree(mdev->tconn->int_dig_in);
- kfree(mdev->tconn->int_dig_vv);
- mdev->tconn->int_dig_out=int_dig_out;
- mdev->tconn->int_dig_in=int_dig_in;
- mdev->tconn->int_dig_vv=int_dig_vv;
- retcode = _conn_request_state(mdev->tconn, NS(conn, C_UNCONNECTED), CS_VERBOSE);
- spin_unlock_irq(&mdev->tconn->req_lock);
+ kfree(tconn->int_dig_out);
+ kfree(tconn->int_dig_in);
+ kfree(tconn->int_dig_vv);
+ tconn->int_dig_out=int_dig_out;
+ tconn->int_dig_in=int_dig_in;
+ tconn->int_dig_vv=int_dig_vv;
+ retcode = _conn_request_state(tconn, NS(conn, C_UNCONNECTED), CS_VERBOSE);
+ spin_unlock_irq(&tconn->req_lock);

- kobject_uevent(&disk_to_dev(mdev->vdisk)->kobj, KOBJ_CHANGE);
+ idr_for_each_entry(&tconn->volumes, mdev, i) {
+ mdev->send_cnt = 0;
+ mdev->recv_cnt = 0;
+ kobject_uevent(&disk_to_dev(mdev->vdisk)->kobj, KOBJ_CHANGE);
+ }
reply->ret_code = retcode;
- conn_reconfig_done(mdev->tconn);
+ conn_reconfig_done(tconn);
return 0;

fail:
@@ -1541,14 +1543,13 @@ fail:
kfree(new_conf);

reply->ret_code = retcode;
- conn_reconfig_done(mdev->tconn);
+ conn_reconfig_done(tconn);
return 0;
}

-static int drbd_nl_disconnect(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
+static int drbd_nl_disconnect(struct drbd_tconn *tconn, struct drbd_nl_cfg_req *nlp,
struct drbd_nl_cfg_reply *reply)
{
- struct drbd_tconn *tconn = mdev->tconn;
int retcode;
struct disconnect dc;

@@ -1600,7 +1601,6 @@ static int drbd_nl_disconnect(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nl
done:
retcode = NO_ERROR;
fail:
- drbd_md_sync(mdev);
reply->ret_code = retcode;
return 0;
}
@@ -2211,8 +2211,8 @@ static struct cn_handler_struct cnd_table[] = {
[ P_secondary ] = { CHT_MINOR, { &drbd_nl_secondary }, 0 },
[ P_disk_conf ] = { CHT_MINOR, { &drbd_nl_disk_conf }, 0 },
[ P_detach ] = { CHT_MINOR, { &drbd_nl_detach }, 0 },
- [ P_net_conf ] = { CHT_MINOR, { &drbd_nl_net_conf }, 0 },
- [ P_disconnect ] = { CHT_MINOR, { &drbd_nl_disconnect }, 0 },
+ [ P_net_conf ] = { CHT_CONN, { .conn_based = &drbd_nl_net_conf }, 0 },
+ [ P_disconnect ] = { CHT_CONN, { .conn_based = &drbd_nl_disconnect }, 0 },
[ P_resize ] = { CHT_MINOR, { &drbd_nl_resize }, 0 },
[ P_syncer_conf ] = { CHT_MINOR, { &drbd_nl_syncer_conf },0 },
[ P_invalidate ] = { CHT_MINOR, { &drbd_nl_invalidate }, 0 },
--
1.7.4.1


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