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authorLinus Torvalds <torvalds@g5.osdl.org>2005-11-18 14:33:03 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-18 14:33:03 -0800
commit9b152d53b763d99802f5948cf4c9eb9e15c07178 (patch)
treea13bc903aee87f726dab6690c22114d26f3c098e
parent62ae144f56b61f541193df4a6465c06ee7eb9096 (diff)
parenteabc77935d8d2a761c88b9cbb6313bd54b6ddbb3 (diff)
downloadlinux-2.6.34-ux500-9b152d53b763d99802f5948cf4c9eb9e15c07178.tar.gz
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
-rw-r--r--drivers/infiniband/core/user_mad.c2
-rw-r--r--drivers/infiniband/hw/mthca/mthca_qp.c37
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c17
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.h1
4 files changed, 31 insertions, 26 deletions
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 5ea741f47fc..e73f81c2238 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -312,7 +312,7 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
int ret, length, hdr_len, copy_offset;
int rmpp_active = 0;
- if (count < sizeof (struct ib_user_mad))
+ if (count < sizeof (struct ib_user_mad) + IB_MGMT_RMPP_HDR)
return -EINVAL;
length = count - sizeof (struct ib_user_mad);
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 760c418d5bc..dd4e13303e9 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -730,15 +730,16 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
}
if (attr_mask & IB_QP_ACCESS_FLAGS) {
+ qp_context->params2 |=
+ cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE ?
+ MTHCA_QP_BIT_RWE : 0);
+
/*
- * Only enable RDMA/atomics if we have responder
- * resources set to a non-zero value.
+ * Only enable RDMA reads and atomics if we have
+ * responder resources set to a non-zero value.
*/
if (qp->resp_depth) {
qp_context->params2 |=
- cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE ?
- MTHCA_QP_BIT_RWE : 0);
- qp_context->params2 |=
cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_READ ?
MTHCA_QP_BIT_RRE : 0);
qp_context->params2 |=
@@ -759,31 +760,27 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
if (qp->resp_depth && !attr->max_dest_rd_atomic) {
/*
* Lowering our responder resources to zero.
- * Turn off RDMA/atomics as responder.
- * (RWE/RRE/RAE in params2 already zero)
+ * Turn off reads RDMA and atomics as responder.
+ * (RRE/RAE in params2 already zero)
*/
- qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RWE |
- MTHCA_QP_OPTPAR_RRE |
+ qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRE |
MTHCA_QP_OPTPAR_RAE);
}
if (!qp->resp_depth && attr->max_dest_rd_atomic) {
/*
* Increasing our responder resources from
- * zero. Turn on RDMA/atomics as appropriate.
+ * zero. Turn on RDMA reads and atomics as
+ * appropriate.
*/
qp_context->params2 |=
- cpu_to_be32(qp->atomic_rd_en & IB_ACCESS_REMOTE_WRITE ?
- MTHCA_QP_BIT_RWE : 0);
- qp_context->params2 |=
cpu_to_be32(qp->atomic_rd_en & IB_ACCESS_REMOTE_READ ?
MTHCA_QP_BIT_RRE : 0);
qp_context->params2 |=
cpu_to_be32(qp->atomic_rd_en & IB_ACCESS_REMOTE_ATOMIC ?
MTHCA_QP_BIT_RAE : 0);
- qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RWE |
- MTHCA_QP_OPTPAR_RRE |
+ qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRE |
MTHCA_QP_OPTPAR_RAE);
}
@@ -921,10 +918,12 @@ static void mthca_adjust_qp_caps(struct mthca_dev *dev,
else
qp->max_inline_data = max_data_size - MTHCA_INLINE_HEADER_SIZE;
- qp->sq.max_gs = max_data_size / sizeof (struct mthca_data_seg);
- qp->rq.max_gs = (min(dev->limits.max_desc_sz, 1 << qp->rq.wqe_shift) -
- sizeof (struct mthca_next_seg)) /
- sizeof (struct mthca_data_seg);
+ qp->sq.max_gs = min_t(int, dev->limits.max_sg,
+ max_data_size / sizeof (struct mthca_data_seg));
+ qp->rq.max_gs = min_t(int, dev->limits.max_sg,
+ (min(dev->limits.max_desc_sz, 1 << qp->rq.wqe_shift) -
+ sizeof (struct mthca_next_seg)) /
+ sizeof (struct mthca_data_seg));
}
/*
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 321a3a10e69..ee9fe226ae9 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -802,13 +802,21 @@ static int srp_post_recv(struct srp_target_port *target)
/*
* Must be called with target->scsi_host->host_lock held to protect
- * req_lim and tx_head.
+ * req_lim and tx_head. Lock cannot be dropped between call here and
+ * call to __srp_post_send().
*/
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;
+ }
+
return target->tx_ring[target->tx_head & SRP_SQ_SIZE];
}
@@ -823,11 +831,6 @@ static int __srp_post_send(struct srp_target_port *target,
struct ib_send_wr wr, *bad_wr;
int ret = 0;
- if (target->req_lim < 1) {
- printk(KERN_ERR PFX "Target has req_lim %d\n", target->req_lim);
- return -EAGAIN;
- }
-
list.addr = iu->dma;
list.length = len;
list.lkey = target->srp_host->mr->lkey;
@@ -1417,6 +1420,8 @@ static ssize_t srp_create_target(struct class_device *class_dev,
if (!target_host)
return -ENOMEM;
+ target_host->max_lun = SRP_MAX_LUN;
+
target = host_to_target(target_host);
memset(target, 0, sizeof *target);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 4fec28a7136..b564f18caf7 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -54,6 +54,7 @@ enum {
SRP_PORT_REDIRECT = 1,
SRP_DLID_REDIRECT = 2,
+ SRP_MAX_LUN = 512,
SRP_MAX_IU_LEN = 256,
SRP_RQ_SHIFT = 6,