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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (46 commits)
  IB/uverbs: Don't serialize with ib_uverbs_idr_mutex
  IB/mthca: Make all device methods truly reentrant
  IB/mthca: Fix memory leak on modify_qp error paths
  IB/uverbs: Factor out common idr code
  IB/uverbs: Don't decrement usecnt on error paths
  IB/uverbs: Release lock on error path
  IB/cm: Use address handle helpers
  IB/sa: Add ib_init_ah_from_path()
  IB: Add ib_init_ah_from_wc()
  IB/ucm: Get rid of duplicate P_Key parameter
  IB/srp: Factor out common request reset code
  IB/srp: Support SRP rev. 10 targets
  [SCSI] srp.h: Add I/O Class values
  IB/fmr: Use device's max_map_map_per_fmr attribute in FMR pool.
  IB/mthca: Fill in max_map_per_fmr device attribute
  IB/ipath: Add client reregister event generation
  IB/mthca: Add client reregister event generation
  IB: Move struct port_info from ipath to <rdma/ib_smi.h>
  IPoIB: Handle client reregister events
  IB: Add client reregister event type
  ...
This commit is contained in:
Linus Torvalds
2006-06-19 19:01:59 -07:00
parent d0b952a983 9ead190bfd
commit 4c84a39c8a
48 changed files with 4596 additions and 1078 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/infiniband/ulp/ipoib/ipoib.h
View File

@@ -272,8 +272,7 @@ int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
void ipoib_dev_cleanup(struct net_device *dev);
void ipoib_mcast_join_task(void *dev_ptr);
void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
struct sk_buff *skb);
void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb);
void ipoib_mcast_restart_task(void *dev_ptr);
int ipoib_mcast_start_thread(struct net_device *dev);
@@ -369,15 +368,26 @@ extern int ipoib_debug_level;
#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x"
#define IPOIB_GID_FMT "%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:" \
"%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x:%2.2x%2.2x"
#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \
be16_to_cpup((__be16 *) ((gid).raw + 2)), \
be16_to_cpup((__be16 *) ((gid).raw + 4)), \
be16_to_cpup((__be16 *) ((gid).raw + 6)), \
be16_to_cpup((__be16 *) ((gid).raw + 8)), \
be16_to_cpup((__be16 *) ((gid).raw + 10)), \
be16_to_cpup((__be16 *) ((gid).raw + 12)), \
be16_to_cpup((__be16 *) ((gid).raw + 14))
#define IPOIB_GID_RAW_ARG(gid) ((u8 *)(gid))[0], \
((u8 *)(gid))[1], \
((u8 *)(gid))[2], \
((u8 *)(gid))[3], \
((u8 *)(gid))[4], \
((u8 *)(gid))[5], \
((u8 *)(gid))[6], \
((u8 *)(gid))[7], \
((u8 *)(gid))[8], \
((u8 *)(gid))[9], \
((u8 *)(gid))[10],\
((u8 *)(gid))[11],\
((u8 *)(gid))[12],\
((u8 *)(gid))[13],\
((u8 *)(gid))[14],\
((u8 *)(gid))[15]
#define IPOIB_GID_ARG(gid) IPOIB_GID_RAW_ARG((gid).raw)
#endif /* _IPOIB_H */

27
drivers/infiniband/ulp/ipoib/ipoib_ib.c
View File

@@ -84,15 +84,9 @@ void ipoib_free_ah(struct kref *kref)
unsigned long flags;
if ((int) priv->tx_tail - (int) ah->last_send >= 0) {
ipoib_dbg(priv, "Freeing ah %p\n", ah->ah);
ib_destroy_ah(ah->ah);
kfree(ah);
} else {
spin_lock_irqsave(&priv->lock, flags);
list_add_tail(&ah->list, &priv->dead_ahs);
spin_unlock_irqrestore(&priv->lock, flags);
}
spin_lock_irqsave(&priv->lock, flags);
list_add_tail(&ah->list, &priv->dead_ahs);
spin_unlock_irqrestore(&priv->lock, flags);
}
static int ipoib_ib_post_receive(struct net_device *dev, int id)
@@ -377,19 +371,16 @@ static void __ipoib_reap_ah(struct net_device *dev)
struct ipoib_ah *ah, *tah;
LIST_HEAD(remove_list);
spin_lock_irq(&priv->lock);
spin_lock_irq(&priv->tx_lock);
spin_lock(&priv->lock);
list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list)
if ((int) priv->tx_tail - (int) ah->last_send >= 0) {
list_del(&ah->list);
list_add_tail(&ah->list, &remove_list);
ib_destroy_ah(ah->ah);
kfree(ah);
}
spin_unlock_irq(&priv->lock);
list_for_each_entry_safe(ah, tah, &remove_list, list) {
ipoib_dbg(priv, "Reaping ah %p\n", ah->ah);
ib_destroy_ah(ah->ah);
kfree(ah);
}
spin_unlock(&priv->lock);
spin_unlock_irq(&priv->tx_lock);
}
void ipoib_reap_ah(void *dev_ptr)

28
drivers/infiniband/ulp/ipoib/ipoib_main.c
View File

@@ -185,8 +185,7 @@ static int ipoib_change_mtu(struct net_device *dev, int new_mtu)
return 0;
}
static struct ipoib_path *__path_find(struct net_device *dev,
union ib_gid *gid)
static struct ipoib_path *__path_find(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct rb_node *n = priv->path_tree.rb_node;
@@ -196,7 +195,7 @@ static struct ipoib_path *__path_find(struct net_device *dev,
while (n) {
path = rb_entry(n, struct ipoib_path, rb_node);
ret = memcmp(gid->raw, path->pathrec.dgid.raw,
ret = memcmp(gid, path->pathrec.dgid.raw,
sizeof (union ib_gid));
if (ret < 0)
@@ -424,8 +423,7 @@ static void path_rec_completion(int status,
}
}
static struct ipoib_path *path_rec_create(struct net_device *dev,
union ib_gid *gid)
static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
@@ -440,7 +438,7 @@ static struct ipoib_path *path_rec_create(struct net_device *dev,
INIT_LIST_HEAD(&path->neigh_list);
memcpy(path->pathrec.dgid.raw, gid->raw, sizeof (union ib_gid));
memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
path->pathrec.sgid = priv->local_gid;
path->pathrec.pkey = cpu_to_be16(priv->pkey);
path->pathrec.numb_path = 1;
@@ -498,10 +496,9 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
*/
spin_lock(&priv->lock);
path = __path_find(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4));
path = __path_find(dev, skb->dst->neighbour->ha + 4);
if (!path) {
path = path_rec_create(dev,
(union ib_gid *) (skb->dst->neighbour->ha + 4));
path = path_rec_create(dev, skb->dst->neighbour->ha + 4);
if (!path)
goto err_path;
@@ -551,7 +548,7 @@ static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
/* Add in the P_Key for multicasts */
skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
skb->dst->neighbour->ha[9] = priv->pkey & 0xff;
ipoib_mcast_send(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4), skb);
ipoib_mcast_send(dev, skb->dst->neighbour->ha + 4, skb);
}
static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
@@ -566,10 +563,9 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
*/
spin_lock(&priv->lock);
path = __path_find(dev, (union ib_gid *) (phdr->hwaddr + 4));
path = __path_find(dev, phdr->hwaddr + 4);
if (!path) {
path = path_rec_create(dev,
(union ib_gid *) (phdr->hwaddr + 4));
path = path_rec_create(dev, phdr->hwaddr + 4);
if (path) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof *phdr);
@@ -660,7 +656,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff;
phdr->hwaddr[9] = priv->pkey & 0xff;
ipoib_mcast_send(dev, (union ib_gid *) (phdr->hwaddr + 4), skb);
ipoib_mcast_send(dev, phdr->hwaddr + 4, skb);
} else {
/* unicast GID -- should be ARP or RARP reply */
@@ -671,7 +667,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
skb->dst ? "neigh" : "dst",
be16_to_cpup((__be16 *) skb->data),
be32_to_cpup((__be32 *) phdr->hwaddr),
IPOIB_GID_ARG(*(union ib_gid *) (phdr->hwaddr + 4)));
IPOIB_GID_RAW_ARG(phdr->hwaddr + 4));
dev_kfree_skb_any(skb);
++priv->stats.tx_dropped;
goto out;
@@ -754,7 +750,7 @@ static void ipoib_neigh_destructor(struct neighbour *n)
ipoib_dbg(priv,
"neigh_destructor for %06x " IPOIB_GID_FMT "\n",
be32_to_cpup((__be32 *) n->ha),
IPOIB_GID_ARG(*((union ib_gid *) (n->ha + 4))));
IPOIB_GID_RAW_ARG(n->ha + 4));
spin_lock_irqsave(&priv->lock, flags);

11
drivers/infiniband/ulp/ipoib/ipoib_multicast.c
View File

@@ -154,7 +154,7 @@ static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
return mcast;
}
static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, union ib_gid *mgid)
static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, void *mgid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct rb_node *n = priv->multicast_tree.rb_node;
@@ -165,7 +165,7 @@ static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, union ib_g
mcast = rb_entry(n, struct ipoib_mcast, rb_node);
ret = memcmp(mgid->raw, mcast->mcmember.mgid.raw,
ret = memcmp(mgid, mcast->mcmember.mgid.raw,
sizeof (union ib_gid));
if (ret < 0)
n = n->rb_left;
@@ -694,8 +694,7 @@ static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
return 0;
}
void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
struct sk_buff *skb)
void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_mcast *mcast;
@@ -718,7 +717,7 @@ void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
if (!mcast) {
/* Let's create a new send only group now */
ipoib_dbg_mcast(priv, "setting up send only multicast group for "
IPOIB_GID_FMT "\n", IPOIB_GID_ARG(*mgid));
IPOIB_GID_FMT "\n", IPOIB_GID_RAW_ARG(mgid));
mcast = ipoib_mcast_alloc(dev, 0);
if (!mcast) {
@@ -730,7 +729,7 @@ void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
}
set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags);
mcast->mcmember.mgid = *mgid;
memcpy(mcast->mcmember.mgid.raw, mgid, sizeof (union ib_gid));
__ipoib_mcast_add(dev, mcast);
list_add_tail(&mcast->list, &priv->multicast_list);
}

3
drivers/infiniband/ulp/ipoib/ipoib_verbs.c
View File

@@ -255,7 +255,8 @@ void ipoib_event(struct ib_event_handler *handler,
record->event == IB_EVENT_PKEY_CHANGE ||
record->event == IB_EVENT_PORT_ACTIVE ||
record->event == IB_EVENT_LID_CHANGE ||
record->event == IB_EVENT_SM_CHANGE) {
record->event == IB_EVENT_SM_CHANGE ||
record->event == IB_EVENT_CLIENT_REREGISTER) {
ipoib_dbg(priv, "Port state change event\n");
queue_work(ipoib_workqueue, &priv->flush_task);
}

482
drivers/infiniband/ulp/srp/ib_srp.c
View File

@@ -62,6 +62,13 @@ MODULE_DESCRIPTION("InfiniBand SCSI RDMA Protocol initiator "
"v" DRV_VERSION " (" DRV_RELDATE ")");
MODULE_LICENSE("Dual BSD/GPL");
static int srp_sg_tablesize = SRP_DEF_SG_TABLESIZE;
static int srp_max_iu_len;
module_param(srp_sg_tablesize, int, 0444);
MODULE_PARM_DESC(srp_sg_tablesize,
"Max number of gather/scatter entries per I/O (default is 12)");
static int topspin_workarounds = 1;
module_param(topspin_workarounds, int, 0444);
@@ -105,7 +112,8 @@ static struct srp_iu *srp_alloc_iu(struct srp_host *host, size_t size,
if (!iu->buf)
goto out_free_iu;
iu->dma = dma_map_single(host->dev->dma_device, iu->buf, size, direction);
iu->dma = dma_map_single(host->dev->dev->dma_device,
iu->buf, size, direction);
if (dma_mapping_error(iu->dma))
goto out_free_buf;
@@ -127,7 +135,8 @@ static void srp_free_iu(struct srp_host *host, struct srp_iu *iu)
if (!iu)
return;
dma_unmap_single(host->dev->dma_device, iu->dma, iu->size, iu->direction);
dma_unmap_single(host->dev->dev->dma_device,
iu->dma, iu->size, iu->direction);
kfree(iu->buf);
kfree(iu);
}
@@ -147,7 +156,7 @@ static int srp_init_qp(struct srp_target_port *target,
if (!attr)
return -ENOMEM;
ret = ib_find_cached_pkey(target->srp_host->dev,
ret = ib_find_cached_pkey(target->srp_host->dev->dev,
target->srp_host->port,
be16_to_cpu(target->path.pkey),
&attr->pkey_index);
@@ -179,7 +188,7 @@ static int srp_create_target_ib(struct srp_target_port *target)
if (!init_attr)
return -ENOMEM;
target->cq = ib_create_cq(target->srp_host->dev, srp_completion,
target->cq = ib_create_cq(target->srp_host->dev->dev, srp_completion,
NULL, target, SRP_CQ_SIZE);
if (IS_ERR(target->cq)) {
ret = PTR_ERR(target->cq);
@@ -198,7 +207,7 @@ static int srp_create_target_ib(struct srp_target_port *target)
init_attr->send_cq = target->cq;
init_attr->recv_cq = target->cq;
target->qp = ib_create_qp(target->srp_host->pd, init_attr);
target->qp = ib_create_qp(target->srp_host->dev->pd, init_attr);
if (IS_ERR(target->qp)) {
ret = PTR_ERR(target->qp);
ib_destroy_cq(target->cq);
@@ -250,7 +259,7 @@ static int srp_lookup_path(struct srp_target_port *target)
init_completion(&target->done);
target->path_query_id = ib_sa_path_rec_get(target->srp_host->dev,
target->path_query_id = ib_sa_path_rec_get(target->srp_host->dev->dev,
target->srp_host->port,
&target->path,
IB_SA_PATH_REC_DGID |
@@ -309,10 +318,32 @@ static int srp_send_req(struct srp_target_port *target)
req->priv.opcode = SRP_LOGIN_REQ;
req->priv.tag = 0;
req->priv.req_it_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
req->priv.req_it_iu_len = cpu_to_be32(srp_max_iu_len);
req->priv.req_buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT |
SRP_BUF_FORMAT_INDIRECT);
memcpy(req->priv.initiator_port_id, target->srp_host->initiator_port_id, 16);
/*
* In the published SRP specification (draft rev. 16a), the
* port identifier format is 8 bytes of ID extension followed
* by 8 bytes of GUID. Older drafts put the two halves in the
* opposite order, so that the GUID comes first.
*
* Targets conforming to these obsolete drafts can be
* recognized by the I/O Class they report.
*/
if (target->io_class == SRP_REV10_IB_IO_CLASS) {
memcpy(req->priv.initiator_port_id,
target->srp_host->initiator_port_id + 8, 8);
memcpy(req->priv.initiator_port_id + 8,
target->srp_host->initiator_port_id, 8);
memcpy(req->priv.target_port_id, &target->ioc_guid, 8);
memcpy(req->priv.target_port_id + 8, &target->id_ext, 8);
} else {
memcpy(req->priv.initiator_port_id,
target->srp_host->initiator_port_id, 16);
memcpy(req->priv.target_port_id, &target->id_ext, 8);
memcpy(req->priv.target_port_id + 8, &target->ioc_guid, 8);
}
/*
* Topspin/Cisco SRP targets will reject our login unless we
* zero out the first 8 bytes of our initiator port ID. The
@@ -325,8 +356,6 @@ static int srp_send_req(struct srp_target_port *target)
(unsigned long long) be64_to_cpu(target->ioc_guid));
memset(req->priv.initiator_port_id, 0, 8);
}
memcpy(req->priv.target_port_id, &target->id_ext, 8);
memcpy(req->priv.target_port_id + 8, &target->ioc_guid, 8);
status = ib_send_cm_req(target->cm_id, &req->param);
@@ -359,9 +388,9 @@ static void srp_remove_work(void *target_ptr)
target->state = SRP_TARGET_REMOVED;
spin_unlock_irq(target->scsi_host->host_lock);
mutex_lock(&target->srp_host->target_mutex);
spin_lock(&target->srp_host->target_lock);
list_del(&target->list);
mutex_unlock(&target->srp_host->target_mutex);
spin_unlock(&target->srp_host->target_lock);
scsi_remove_host(target->scsi_host);
ib_destroy_cm_id(target->cm_id);
@@ -421,6 +450,11 @@ static void srp_unmap_data(struct scsi_cmnd *scmnd,
scmnd->sc_data_direction != DMA_FROM_DEVICE))
return;
if (req->fmr) {
ib_fmr_pool_unmap(req->fmr);
req->fmr = NULL;
}
/*
* This handling of non-SG commands can be killed when the
* SCSI midlayer no longer generates non-SG commands.
@@ -433,18 +467,30 @@ static void srp_unmap_data(struct scsi_cmnd *scmnd,
scat = &req->fake_sg;
}
dma_unmap_sg(target->srp_host->dev->dma_device, scat, nents,
dma_unmap_sg(target->srp_host->dev->dev->dma_device, scat, nents,
scmnd->sc_data_direction);
}
static void srp_remove_req(struct srp_target_port *target, struct srp_request *req)
{
srp_unmap_data(req->scmnd, target, req);
list_move_tail(&req->list, &target->free_reqs);
}
static void srp_reset_req(struct srp_target_port *target, struct srp_request *req)
{
req->scmnd->result = DID_RESET << 16;
req->scmnd->scsi_done(req->scmnd);
srp_remove_req(target, req);
}
static int srp_reconnect_target(struct srp_target_port *target)
{
struct ib_cm_id *new_cm_id;
struct ib_qp_attr qp_attr;
struct srp_request *req;
struct srp_request *req, *tmp;
struct ib_wc wc;
int ret;
int i;
spin_lock_irq(target->scsi_host->host_lock);
if (target->state != SRP_TARGET_LIVE) {
@@ -459,7 +505,7 @@ static int srp_reconnect_target(struct srp_target_port *target)
* Now get a new local CM ID so that we avoid confusing the
* target in case things are really fouled up.
*/
new_cm_id = ib_create_cm_id(target->srp_host->dev,
new_cm_id = ib_create_cm_id(target->srp_host->dev->dev,
srp_cm_handler, target);
if (IS_ERR(new_cm_id)) {
ret = PTR_ERR(new_cm_id);
@@ -480,19 +526,12 @@ static int srp_reconnect_target(struct srp_target_port *target)
while (ib_poll_cq(target->cq, 1, &wc) > 0)
; /* nothing */
list_for_each_entry(req, &target->req_queue, list) {
req->scmnd->result = DID_RESET << 16;
req->scmnd->scsi_done(req->scmnd);
srp_unmap_data(req->scmnd, target, req);
}
list_for_each_entry_safe(req, tmp, &target->req_queue, list)
srp_reset_req(target, req);
target->rx_head = 0;
target->tx_head = 0;
target->tx_tail = 0;
INIT_LIST_HEAD(&target->free_reqs);
INIT_LIST_HEAD(&target->req_queue);
for (i = 0; i < SRP_SQ_SIZE; ++i)
list_add_tail(&target->req_ring[i].list, &target->free_reqs);
ret = srp_connect_target(target);
if (ret)
@@ -528,14 +567,79 @@ err:
return ret;
}
static int srp_map_fmr(struct srp_device *dev, struct scatterlist *scat,
int sg_cnt, struct srp_request *req,
struct srp_direct_buf *buf)
{
u64 io_addr = 0;
u64 *dma_pages;
u32 len;
int page_cnt;
int i, j;
int ret;
if (!dev->fmr_pool)
return -ENODEV;
len = page_cnt = 0;
for (i = 0; i < sg_cnt; ++i) {
if (sg_dma_address(&scat[i]) & ~dev->fmr_page_mask) {
if (i > 0)
return -EINVAL;
else
++page_cnt;
}
if ((sg_dma_address(&scat[i]) + sg_dma_len(&scat[i])) &
~dev->fmr_page_mask) {
if (i < sg_cnt - 1)
return -EINVAL;
else
++page_cnt;
}
len += sg_dma_len(&scat[i]);
}
page_cnt += len >> dev->fmr_page_shift;
if (page_cnt > SRP_FMR_SIZE)
return -ENOMEM;
dma_pages = kmalloc(sizeof (u64) * page_cnt, GFP_ATOMIC);
if (!dma_pages)
return -ENOMEM;
page_cnt = 0;
for (i = 0; i < sg_cnt; ++i)
for (j = 0; j < sg_dma_len(&scat[i]); j += dev->fmr_page_size)
dma_pages[page_cnt++] =
(sg_dma_address(&scat[i]) & dev->fmr_page_mask) + j;
req->fmr = ib_fmr_pool_map_phys(dev->fmr_pool,
dma_pages, page_cnt, &io_addr);
if (IS_ERR(req->fmr)) {
ret = PTR_ERR(req->fmr);
goto out;
}
buf->va = cpu_to_be64(sg_dma_address(&scat[0]) & ~dev->fmr_page_mask);
buf->key = cpu_to_be32(req->fmr->fmr->rkey);
buf->len = cpu_to_be32(len);
ret = 0;
out:
kfree(dma_pages);
return ret;
}
static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target,
struct srp_request *req)
{
struct scatterlist *scat;
struct srp_cmd *cmd = req->cmd->buf;
int len, nents, count;
int i;
u8 fmt;
u8 fmt = SRP_DATA_DESC_DIRECT;
if (!scmnd->request_buffer || scmnd->sc_data_direction == DMA_NONE)
return sizeof (struct srp_cmd);
@@ -560,53 +664,63 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target,
sg_init_one(scat, scmnd->request_buffer, scmnd->request_bufflen);
}
count = dma_map_sg(target->srp_host->dev->dma_device, scat, nents,
scmnd->sc_data_direction);
count = dma_map_sg(target->srp_host->dev->dev->dma_device,
scat, nents, scmnd->sc_data_direction);
fmt = SRP_DATA_DESC_DIRECT;
len = sizeof (struct srp_cmd) + sizeof (struct srp_direct_buf);
if (count == 1) {
/*
* The midlayer only generated a single gather/scatter
* entry, or DMA mapping coalesced everything to a
* single entry. So a direct descriptor along with
* the DMA MR suffices.
*/
struct srp_direct_buf *buf = (void *) cmd->add_data;
fmt = SRP_DATA_DESC_DIRECT;
buf->va = cpu_to_be64(sg_dma_address(scat));
buf->key = cpu_to_be32(target->srp_host->mr->rkey);
buf->key = cpu_to_be32(target->srp_host->dev->mr->rkey);
buf->len = cpu_to_be32(sg_dma_len(scat));
len = sizeof (struct srp_cmd) +
sizeof (struct srp_direct_buf);
} else {
} else if (srp_map_fmr(target->srp_host->dev, scat, count, req,
(void *) cmd->add_data)) {
/*
* FMR mapping failed, and the scatterlist has more
* than one entry. Generate an indirect memory
* descriptor.
*/
struct srp_indirect_buf *buf = (void *) cmd->add_data;
u32 datalen = 0;
int i;
fmt = SRP_DATA_DESC_INDIRECT;
len = sizeof (struct srp_cmd) +
sizeof (struct srp_indirect_buf) +
count * sizeof (struct srp_direct_buf);
for (i = 0; i < count; ++i) {
buf->desc_list[i].va =
cpu_to_be64(sg_dma_address(&scat[i]));
buf->desc_list[i].key =
cpu_to_be32(target->srp_host->dev->mr->rkey);
buf->desc_list[i].len =
cpu_to_be32(sg_dma_len(&scat[i]));
datalen += sg_dma_len(&scat[i]);
}
if (scmnd->sc_data_direction == DMA_TO_DEVICE)
cmd->data_out_desc_cnt = count;
else
cmd->data_in_desc_cnt = count;
buf->table_desc.va = cpu_to_be64(req->cmd->dma +
sizeof *cmd +
sizeof *buf);
buf->table_desc.va =
cpu_to_be64(req->cmd->dma + sizeof *cmd + sizeof *buf);
buf->table_desc.key =
cpu_to_be32(target->srp_host->mr->rkey);
cpu_to_be32(target->srp_host->dev->mr->rkey);
buf->table_desc.len =
cpu_to_be32(count * sizeof (struct srp_direct_buf));
for (i = 0; i < count; ++i) {
buf->desc_list[i].va = cpu_to_be64(sg_dma_address(&scat[i]));
buf->desc_list[i].key =
cpu_to_be32(target->srp_host->mr->rkey);
buf->desc_list[i].len = cpu_to_be32(sg_dma_len(&scat[i]));
datalen += sg_dma_len(&scat[i]);
}
buf->len = cpu_to_be32(datalen);
len = sizeof (struct srp_cmd) +
sizeof (struct srp_indirect_buf) +
count * sizeof (struct srp_direct_buf);
}
if (scmnd->sc_data_direction == DMA_TO_DEVICE)
@@ -617,12 +731,6 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target,
return len;
}
static void srp_remove_req(struct srp_target_port *target, struct srp_request *req)
{
srp_unmap_data(req->scmnd, target, req);
list_move_tail(&req->list, &target->free_reqs);
}
static void srp_process_rsp(struct srp_target_port *target, struct srp_rsp *rsp)
{
struct srp_request *req;
@@ -689,7 +797,7 @@ static void srp_handle_recv(struct srp_target_port *target, struct ib_wc *wc)
iu = target->rx_ring[wc->wr_id & ~SRP_OP_RECV];
dma_sync_single_for_cpu(target->srp_host->dev->dma_device, iu->dma,
dma_sync_single_for_cpu(target->srp_host->dev->dev->dma_device, iu->dma,
target->max_ti_iu_len, DMA_FROM_DEVICE);
opcode = *(u8 *) iu->buf;
@@ -726,7 +834,7 @@ static void srp_handle_recv(struct srp_target_port *target, struct ib_wc *wc)
break;
}
dma_sync_single_for_device(target->srp_host->dev->dma_device, iu->dma,
dma_sync_single_for_device(target->srp_host->dev->dev->dma_device, iu->dma,
target->max_ti_iu_len, DMA_FROM_DEVICE);
}
@@ -770,7 +878,7 @@ static int __srp_post_recv(struct srp_target_port *target)
list.addr = iu->dma;
list.length = iu->size;
list.lkey = target->srp_host->mr->lkey;
list.lkey = target->srp_host->dev->mr->lkey;
wr.next = NULL;
wr.sg_list = &list;
@@ -805,12 +913,8 @@ static struct srp_iu *__srp_get_tx_iu(struct srp_target_port *target)
if (target->tx_head - target->tx_tail >= SRP_SQ_SIZE)
return NULL;
if (unlikely(target->req_lim < 1)) {
if (printk_ratelimit())
printk(KERN_DEBUG PFX "Target has req_lim %d\n",
target->req_lim);
return NULL;
}
if (unlikely(target->req_lim < 1))
++target->zero_req_lim;
return target->tx_ring[target->tx_head & SRP_SQ_SIZE];
}
@@ -828,7 +932,7 @@ static int __srp_post_send(struct srp_target_port *target,
list.addr = iu->dma;
list.length = len;
list.lkey = target->srp_host->mr->lkey;
list.lkey = target->srp_host->dev->mr->lkey;
wr.next = NULL;
wr.wr_id = target->tx_head & SRP_SQ_SIZE;
@@ -870,8 +974,8 @@ static int srp_queuecommand(struct scsi_cmnd *scmnd,
if (!iu)
goto err;
dma_sync_single_for_cpu(target->srp_host->dev->dma_device, iu->dma,
SRP_MAX_IU_LEN, DMA_TO_DEVICE);
dma_sync_single_for_cpu(target->srp_host->dev->dev->dma_device, iu->dma,
srp_max_iu_len, DMA_TO_DEVICE);
req = list_entry(target->free_reqs.next, struct srp_request, list);
@@ -903,8 +1007,8 @@ static int srp_queuecommand(struct scsi_cmnd *scmnd,
goto err_unmap;
}
dma_sync_single_for_device(target->srp_host->dev->dma_device, iu->dma,
SRP_MAX_IU_LEN, DMA_TO_DEVICE);
dma_sync_single_for_device(target->srp_host->dev->dev->dma_device, iu->dma,
srp_max_iu_len, DMA_TO_DEVICE);
if (__srp_post_send(target, iu, len)) {
printk(KERN_ERR PFX "Send failed\n");
@@ -936,7 +1040,7 @@ static int srp_alloc_iu_bufs(struct srp_target_port *target)
for (i = 0; i < SRP_SQ_SIZE + 1; ++i) {
target->tx_ring[i] = srp_alloc_iu(target->srp_host,
SRP_MAX_IU_LEN,
srp_max_iu_len,
GFP_KERNEL, DMA_TO_DEVICE);
if (!target->tx_ring[i])
goto err;
@@ -1107,11 +1211,10 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
srp_cm_rej_handler(cm_id, event, target);
break;
case IB_CM_MRA_RECEIVED:
printk(KERN_ERR PFX "MRA received\n");
break;
case IB_CM_DREP_RECEIVED:
case IB_CM_DREQ_RECEIVED:
printk(KERN_WARNING PFX "DREQ received - connection closed\n");
if (ib_send_cm_drep(cm_id, NULL, 0))
printk(KERN_ERR PFX "Sending CM DREP failed\n");
break;
case IB_CM_TIMEWAIT_EXIT:
@@ -1121,6 +1224,11 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
target->status = 0;
break;
case IB_CM_MRA_RECEIVED:
case IB_CM_DREQ_ERROR:
case IB_CM_DREP_RECEIVED:
break;
default:
printk(KERN_WARNING PFX "Unhandled CM event %d\n", event->event);
break;
@@ -1239,11 +1347,8 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
spin_lock_irq(target->scsi_host->host_lock);
list_for_each_entry_safe(req, tmp, &target->req_queue, list)
if (req->scmnd->device == scmnd->device) {
req->scmnd->result = DID_RESET << 16;
req->scmnd->scsi_done(req->scmnd);
srp_remove_req(target, req);
}
if (req->scmnd->device == scmnd->device)
srp_reset_req(target, req);
spin_unlock_irq(target->scsi_host->host_lock);
@@ -1329,11 +1434,23 @@ static ssize_t show_dgid(struct class_device *cdev, char *buf)
be16_to_cpu(((__be16 *) target->path.dgid.raw)[7]));
}
static ssize_t show_zero_req_lim(struct class_device *cdev, char *buf)
{
struct srp_target_port *target = host_to_target(class_to_shost(cdev));
if (target->state == SRP_TARGET_DEAD ||
target->state == SRP_TARGET_REMOVED)
return -ENODEV;
return sprintf(buf, "%d\n", target->zero_req_lim);
}
static CLASS_DEVICE_ATTR(id_ext, S_IRUGO, show_id_ext, NULL);
static CLASS_DEVICE_ATTR(ioc_guid, S_IRUGO, show_ioc_guid, NULL);
static CLASS_DEVICE_ATTR(service_id, S_IRUGO, show_service_id, NULL);
static CLASS_DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
static CLASS_DEVICE_ATTR(dgid, S_IRUGO, show_dgid, NULL);
static CLASS_DEVICE_ATTR(zero_req_lim, S_IRUGO, show_zero_req_lim, NULL);
static struct class_device_attribute *srp_host_attrs[] = {
&class_device_attr_id_ext,
@@ -1341,6 +1458,7 @@ static struct class_device_attribute *srp_host_attrs[] = {
&class_device_attr_service_id,
&class_device_attr_pkey,
&class_device_attr_dgid,
&class_device_attr_zero_req_lim,
NULL
};
@@ -1354,7 +1472,6 @@ static struct scsi_host_template srp_template = {
.eh_host_reset_handler = srp_reset_host,
.can_queue = SRP_SQ_SIZE,
.this_id = -1,
.sg_tablesize = SRP_MAX_INDIRECT,
.cmd_per_lun = SRP_SQ_SIZE,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = srp_host_attrs
@@ -1365,18 +1482,17 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
sprintf(target->target_name, "SRP.T10:%016llX",
(unsigned long long) be64_to_cpu(target->id_ext));
if (scsi_add_host(target->scsi_host, host->dev->dma_device))
if (scsi_add_host(target->scsi_host, host->dev->dev->dma_device))
return -ENODEV;
mutex_lock(&host->target_mutex);
spin_lock(&host->target_lock);
list_add_tail(&target->list, &host->target_list);
mutex_unlock(&host->target_mutex);
spin_unlock(&host->target_lock);
target->state = SRP_TARGET_LIVE;
/* XXX: are we supposed to have a definition of SCAN_WILD_CARD ?? */
scsi_scan_target(&target->scsi_host->shost_gendev,
0, target->scsi_id, ~0, 0);
0, target->scsi_id, SCAN_WILD_CARD, 0);
return 0;
}
@@ -1410,6 +1526,8 @@ enum {
SRP_OPT_PKEY = 1 << 3,
SRP_OPT_SERVICE_ID = 1 << 4,
SRP_OPT_MAX_SECT = 1 << 5,
SRP_OPT_MAX_CMD_PER_LUN = 1 << 6,
SRP_OPT_IO_CLASS = 1 << 7,
SRP_OPT_ALL = (SRP_OPT_ID_EXT |
SRP_OPT_IOC_GUID |
SRP_OPT_DGID |
@@ -1418,13 +1536,15 @@ enum {
};
static match_table_t srp_opt_tokens = {
{ SRP_OPT_ID_EXT, "id_ext=%s" },
{ SRP_OPT_IOC_GUID, "ioc_guid=%s" },
{ SRP_OPT_DGID, "dgid=%s" },
{ SRP_OPT_PKEY, "pkey=%x" },
{ SRP_OPT_SERVICE_ID, "service_id=%s" },
{ SRP_OPT_MAX_SECT, "max_sect=%d" },
{ SRP_OPT_ERR, NULL }
{ SRP_OPT_ID_EXT, "id_ext=%s" },
{ SRP_OPT_IOC_GUID, "ioc_guid=%s" },
{ SRP_OPT_DGID, "dgid=%s" },
{ SRP_OPT_PKEY, "pkey=%x" },
{ SRP_OPT_SERVICE_ID, "service_id=%s" },
{ SRP_OPT_MAX_SECT, "max_sect=%d" },
{ SRP_OPT_MAX_CMD_PER_LUN, "max_cmd_per_lun=%d" },
{ SRP_OPT_IO_CLASS, "io_class=%x" },
{ SRP_OPT_ERR, NULL }
};
static int srp_parse_options(const char *buf, struct srp_target_port *target)
@@ -1500,6 +1620,29 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
target->scsi_host->max_sectors = token;
break;
case SRP_OPT_MAX_CMD_PER_LUN:
if (match_int(args, &token)) {
printk(KERN_WARNING PFX "bad max cmd_per_lun parameter '%s'\n", p);
goto out;
}
target->scsi_host->cmd_per_lun = min(token, SRP_SQ_SIZE);
break;
case SRP_OPT_IO_CLASS:
if (match_hex(args, &token)) {
printk(KERN_WARNING PFX "bad IO class parameter '%s' \n", p);
goto out;
}
if (token != SRP_REV10_IB_IO_CLASS &&
token != SRP_REV16A_IB_IO_CLASS) {
printk(KERN_WARNING PFX "unknown IO class parameter value"
" %x specified (use %x or %x).\n",
token, SRP_REV10_IB_IO_CLASS, SRP_REV16A_IB_IO_CLASS);
goto out;
}
target->io_class = token;
break;
default:
printk(KERN_WARNING PFX "unknown parameter or missing value "
"'%s' in target creation request\n", p);
@@ -1542,6 +1685,7 @@ static ssize_t srp_create_target(struct class_device *class_dev,
target = host_to_target(target_host);
memset(target, 0, sizeof *target);
target->io_class = SRP_REV16A_IB_IO_CLASS;
target->scsi_host = target_host;
target->srp_host = host;
@@ -1558,7 +1702,7 @@ static ssize_t srp_create_target(struct class_device *class_dev,
if (ret)
goto err;
ib_get_cached_gid(host->dev, host->port, 0, &target->path.sgid);
ib_get_cached_gid(host->dev->dev, host->port, 0, &target->path.sgid);
printk(KERN_DEBUG PFX "new target: id_ext %016llx ioc_guid %016llx pkey %04x "
"service_id %016llx dgid %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
@@ -1579,7 +1723,7 @@ static ssize_t srp_create_target(struct class_device *class_dev,
if (ret)
goto err;
target->cm_id = ib_create_cm_id(host->dev, srp_cm_handler, target);
target->cm_id = ib_create_cm_id(host->dev->dev, srp_cm_handler, target);
if (IS_ERR(target->cm_id)) {
ret = PTR_ERR(target->cm_id);
goto err_free;
@@ -1619,7 +1763,7 @@ static ssize_t show_ibdev(struct class_device *class_dev, char *buf)
struct srp_host *host =
container_of(class_dev, struct srp_host, class_dev);
return sprintf(buf, "%s\n", host->dev->name);
return sprintf(buf, "%s\n", host->dev->dev->name);
}
static CLASS_DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL);
@@ -1634,7 +1778,7 @@ static ssize_t show_port(struct class_device *class_dev, char *buf)
static CLASS_DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
static struct srp_host *srp_add_port(struct ib_device *device, u8 port)
static struct srp_host *srp_add_port(struct srp_device *device, u8 port)
{
struct srp_host *host;
@@ -1643,32 +1787,21 @@ static struct srp_host *srp_add_port(struct ib_device *device, u8 port)
return NULL;
INIT_LIST_HEAD(&host->target_list);
mutex_init(&host->target_mutex);
spin_lock_init(&host->target_lock);
init_completion(&host->released);
host->dev = device;
host->port = port;
host->initiator_port_id[7] = port;
memcpy(host->initiator_port_id + 8, &device->node_guid, 8);
host->pd = ib_alloc_pd(device);
if (IS_ERR(host->pd))
goto err_free;
host->mr = ib_get_dma_mr(host->pd,
IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_READ |
IB_ACCESS_REMOTE_WRITE);
if (IS_ERR(host->mr))
goto err_pd;
memcpy(host->initiator_port_id + 8, &device->dev->node_guid, 8);
host->class_dev.class = &srp_class;
host->class_dev.dev = device->dma_device;
host->class_dev.dev = device->dev->dma_device;
snprintf(host->class_dev.class_id, BUS_ID_SIZE, "srp-%s-%d",
device->name, port);
device->dev->name, port);
if (class_device_register(&host->class_dev))
goto err_mr;
goto free_host;
if (class_device_create_file(&host->class_dev, &class_device_attr_add_target))
goto err_class;
if (class_device_create_file(&host->class_dev, &class_device_attr_ibdev))
@@ -1681,13 +1814,7 @@ static struct srp_host *srp_add_port(struct ib_device *device, u8 port)
err_class:
class_device_unregister(&host->class_dev);
err_mr:
ib_dereg_mr(host->mr);
err_pd:
ib_dealloc_pd(host->pd);
err_free:
free_host:
kfree(host);
return NULL;
@@ -1695,15 +1822,62 @@ err_free:
static void srp_add_one(struct ib_device *device)
{
struct list_head *dev_list;
struct srp_device *srp_dev;
struct ib_device_attr *dev_attr;
struct ib_fmr_pool_param fmr_param;
struct srp_host *host;
int s, e, p;
dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
if (!dev_list)
dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL);
if (!dev_attr)
return;
INIT_LIST_HEAD(dev_list);
if (ib_query_device(device, dev_attr)) {
printk(KERN_WARNING PFX "Query device failed for %s\n",
device->name);
goto free_attr;
}
srp_dev = kmalloc(sizeof *srp_dev, GFP_KERNEL);
if (!srp_dev)
goto free_attr;
/*
* Use the smallest page size supported by the HCA, down to a
* minimum of 512 bytes (which is the smallest sector that a
* SCSI command will ever carry).
*/
srp_dev->fmr_page_shift = max(9, ffs(dev_attr->page_size_cap) - 1);
srp_dev->fmr_page_size = 1 << srp_dev->fmr_page_shift;
srp_dev->fmr_page_mask = ~((unsigned long) srp_dev->fmr_page_size - 1);
INIT_LIST_HEAD(&srp_dev->dev_list);
srp_dev->dev = device;
srp_dev->pd = ib_alloc_pd(device);
if (IS_ERR(srp_dev->pd))
goto free_dev;
srp_dev->mr = ib_get_dma_mr(srp_dev->pd,
IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_READ |
IB_ACCESS_REMOTE_WRITE);
if (IS_ERR(srp_dev->mr))
goto err_pd;
memset(&fmr_param, 0, sizeof fmr_param);
fmr_param.pool_size = SRP_FMR_POOL_SIZE;
fmr_param.dirty_watermark = SRP_FMR_DIRTY_SIZE;
fmr_param.cache = 1;
fmr_param.max_pages_per_fmr = SRP_FMR_SIZE;
fmr_param.page_shift = srp_dev->fmr_page_shift;
fmr_param.access = (IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_WRITE |
IB_ACCESS_REMOTE_READ);
srp_dev->fmr_pool = ib_create_fmr_pool(srp_dev->pd, &fmr_param);
if (IS_ERR(srp_dev->fmr_pool))
srp_dev->fmr_pool = NULL;
if (device->node_type == IB_NODE_SWITCH) {
s = 0;
@@ -1714,25 +1888,35 @@ static void srp_add_one(struct ib_device *device)
}
for (p = s; p <= e; ++p) {
host = srp_add_port(device, p);
host = srp_add_port(srp_dev, p);
if (host)
list_add_tail(&host->list, dev_list);
list_add_tail(&host->list, &srp_dev->dev_list);
}
ib_set_client_data(device, &srp_client, dev_list);
ib_set_client_data(device, &srp_client, srp_dev);
goto free_attr;
err_pd:
ib_dealloc_pd(srp_dev->pd);
free_dev:
kfree(srp_dev);
free_attr:
kfree(dev_attr);
}
static void srp_remove_one(struct ib_device *device)
{
struct list_head *dev_list;
struct srp_device *srp_dev;
struct srp_host *host, *tmp_host;
LIST_HEAD(target_list);
struct srp_target_port *target, *tmp_target;
unsigned long flags;
dev_list = ib_get_client_data(device, &srp_client);
srp_dev = ib_get_client_data(device, &srp_client);
list_for_each_entry_safe(host, tmp_host, dev_list, list) {
list_for_each_entry_safe(host, tmp_host, &srp_dev->dev_list, list) {
class_device_unregister(&host->class_dev);
/*
* Wait for the sysfs entry to go away, so that no new
@@ -1744,15 +1928,13 @@ static void srp_remove_one(struct ib_device *device)
* Mark all target ports as removed, so we stop queueing
* commands and don't try to reconnect.
*/
mutex_lock(&host->target_mutex);
list_for_each_entry_safe(target, tmp_target,
&host->target_list, list) {
spin_lock_irqsave(target->scsi_host->host_lock, flags);
if (target->state != SRP_TARGET_REMOVED)
target->state = SRP_TARGET_REMOVED;
spin_unlock_irqrestore(target->scsi_host->host_lock, flags);
spin_lock(&host->target_lock);
list_for_each_entry(target, &host->target_list, list) {
spin_lock_irq(target->scsi_host->host_lock);
target->state = SRP_TARGET_REMOVED;
spin_unlock_irq(target->scsi_host->host_lock);
}
mutex_unlock(&host->target_mutex);
spin_unlock(&host->target_lock);
/*
* Wait for any reconnection tasks that may have
@@ -1770,18 +1952,26 @@ static void srp_remove_one(struct ib_device *device)
scsi_host_put(target->scsi_host);
}
ib_dereg_mr(host->mr);
ib_dealloc_pd(host->pd);
kfree(host);
}
kfree(dev_list);
if (srp_dev->fmr_pool)
ib_destroy_fmr_pool(srp_dev->fmr_pool);
ib_dereg_mr(srp_dev->mr);
ib_dealloc_pd(srp_dev->pd);
kfree(srp_dev);
}
static int __init srp_init_module(void)
{
int ret;
srp_template.sg_tablesize = srp_sg_tablesize;
srp_max_iu_len = (sizeof (struct srp_cmd) +
sizeof (struct srp_indirect_buf) +
srp_sg_tablesize * 16);
ret = class_register(&srp_class);
if (ret) {
printk(KERN_ERR PFX "couldn't register class infiniband_srp\n");

33
drivers/infiniband/ulp/srp/ib_srp.h
View File

@@ -46,6 +46,7 @@
#include <rdma/ib_verbs.h>
#include <rdma/ib_sa.h>
#include <rdma/ib_cm.h>
#include <rdma/ib_fmr_pool.h>
enum {
SRP_PATH_REC_TIMEOUT_MS = 1000,
@@ -55,20 +56,21 @@ enum {
SRP_DLID_REDIRECT = 2,
SRP_MAX_LUN = 512,
SRP_MAX_IU_LEN = 256,
SRP_DEF_SG_TABLESIZE = 12,
SRP_RQ_SHIFT = 6,
SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
SRP_SQ_SIZE = SRP_RQ_SIZE - 1,
SRP_CQ_SIZE = SRP_SQ_SIZE + SRP_RQ_SIZE,
SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1)
SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1),
SRP_FMR_SIZE = 256,
SRP_FMR_POOL_SIZE = 1024,
SRP_FMR_DIRTY_SIZE = SRP_FMR_POOL_SIZE / 4
};
#define SRP_OP_RECV (1 << 31)
#define SRP_MAX_INDIRECT ((SRP_MAX_IU_LEN - \
sizeof (struct srp_cmd) - \
sizeof (struct srp_indirect_buf)) / 16)
enum srp_target_state {
SRP_TARGET_LIVE,
@@ -77,15 +79,24 @@ enum srp_target_state {
SRP_TARGET_REMOVED
};
struct srp_host {
u8 initiator_port_id[16];
struct srp_device {
struct list_head dev_list;
struct ib_device *dev;
u8 port;
struct ib_pd *pd;
struct ib_mr *mr;
struct ib_fmr_pool *fmr_pool;
int fmr_page_shift;
int fmr_page_size;
unsigned long fmr_page_mask;
};
struct srp_host {
u8 initiator_port_id[16];
struct srp_device *dev;
u8 port;
struct class_device class_dev;
struct list_head target_list;
struct mutex target_mutex;
spinlock_t target_lock;
struct completion released;
struct list_head list;
};
@@ -95,6 +106,7 @@ struct srp_request {
struct scsi_cmnd *scmnd;
struct srp_iu *cmd;
struct srp_iu *tsk_mgmt;
struct ib_pool_fmr *fmr;
/*
* Fake scatterlist used when scmnd->use_sg==0. Can be killed
* when the SCSI midlayer no longer generates non-SG commands.
@@ -110,6 +122,7 @@ struct srp_target_port {
__be64 id_ext;
__be64 ioc_guid;
__be64 service_id;
u16 io_class;
struct srp_host *srp_host;
struct Scsi_Host *scsi_host;
char target_name[32];
@@ -126,6 +139,8 @@ struct srp_target_port {
int max_ti_iu_len;
s32 req_lim;
int zero_req_lim;
unsigned rx_head;
struct srp_iu *rx_ring[SRP_RQ_SIZE];