From 7a5efb62f6ae366cefac6be475434906c5061e15 Mon Sep 17 00:00:00 2001 From: Don Wood Date: Wed, 8 Apr 2009 14:21:02 -0700 Subject: [PATCH] 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 Signed-off-by: Roland Dreier --- drivers/infiniband/hw/nes/nes.h | 4 ++-- drivers/infiniband/hw/nes/nes_cm.c | 6 ++++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h index 04b12ad23390..17621de54a9f 100644 --- a/drivers/infiniband/hw/nes/nes.h +++ b/drivers/infiniband/hw/nes/nes.h @@ -289,8 +289,8 @@ static inline __le32 get_crc_value(struct nes_v4_quad *nes_quad) static inline void set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value) { - wqe_words[index] = cpu_to_le32((u32) ((unsigned long)value)); - wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value))); + wqe_words[index] = cpu_to_le32((u32) value); + wqe_words[index + 1] = cpu_to_le32(upper_32_bits(value)); } static inline void diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index 52425154acd4..7c942470b980 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -2690,6 +2690,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) struct ib_mr *ibmr = NULL; struct ib_phys_buf ibphysbuf; struct nes_pd *nespd; + u64 tagged_offset; @@ -2755,10 +2756,11 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 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 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 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));