RDMA/nes: Fix incorrect casts on 32-bit architectures
The were some incorrect casts to unsigned long that caused 64-bit values
to be truncated on 32-bit architectures and made the driver pass invalid
adresses and lengths to the hardware. The problems were primarily seen
with kernels with highmem configured but some could show up in
non-highmem kernels, too.
Signed-off-by: Don Wood <donald.e.wood@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 5242515..7c94247 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -2690,6 +2690,7 @@
struct ib_mr *ibmr = NULL;
struct ib_phys_buf ibphysbuf;
struct nes_pd *nespd;
+ u64 tagged_offset;
@@ -2755,10 +2756,11 @@
ibphysbuf.addr = nesqp->ietf_frame_pbase;
ibphysbuf.size = conn_param->private_data_len +
sizeof(struct ietf_mpa_frame);
+ tagged_offset = (u64)(unsigned long)nesqp->ietf_frame;
ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd,
&ibphysbuf, 1,
IB_ACCESS_LOCAL_WRITE,
- (u64 *)&nesqp->ietf_frame);
+ &tagged_offset);
if (!ibmr) {
nes_debug(NES_DBG_CM, "Unable to register memory region"
"for lSMM for cm_node = %p \n",
@@ -2782,7 +2784,7 @@
sizeof(struct ietf_mpa_frame));
set_wqe_64bit_value(wqe->wqe_words,
NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
- (u64)nesqp->ietf_frame);
+ (u64)(unsigned long)nesqp->ietf_frame);
wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] =
cpu_to_le32(conn_param->private_data_len +
sizeof(struct ietf_mpa_frame));