When map a device between servers with MLX and BCM RoCE nics, RTRS
server complain about unknown imm type, and can't map the device,
After more debug, it seems bnxt_re wrongly handle the
imm_data, this patch fixed the compat issue with MLX for us.
In off list discussion, Selvin confirm HW is working in little endian format
and all data needs to be converted to LE while providing.
This patch fix the endianness for imm_data
Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxx>
---
v2: address comment from Selvin, drop second patch.
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 8 ++++----
drivers/infiniband/hw/bnxt_re/qplib_fp.h | 6 +++---
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index e453ca701e87..7c757351a016 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -2479,7 +2479,7 @@ static int bnxt_re_build_send_wqe(struct bnxt_re_qp *qp,
break;
case IB_WR_SEND_WITH_IMM:
wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM;
- wqe->send.imm_data = wr->ex.imm_data;
+ wqe->send.imm_data = be32_to_cpu(wr->ex.imm_data);
break;
case IB_WR_SEND_WITH_INV:
wqe->type = BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV;
@@ -2509,7 +2509,7 @@ static int bnxt_re_build_rdma_wqe(const struct ib_send_wr *wr,
break;
case IB_WR_RDMA_WRITE_WITH_IMM:
wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM;
- wqe->rdma.imm_data = wr->ex.imm_data;
+ wqe->rdma.imm_data = be32_to_cpu(wr->ex.imm_data);
break;
case IB_WR_RDMA_READ:
wqe->type = BNXT_QPLIB_SWQE_TYPE_RDMA_READ;
@@ -3582,7 +3582,7 @@ static void bnxt_re_process_res_shadow_qp_wc(struct bnxt_re_qp *gsi_sqp,
wc->byte_len = orig_cqe->length;
wc->qp = &gsi_qp->ib_qp;
- wc->ex.imm_data = orig_cqe->immdata;
+ wc->ex.imm_data = cpu_to_be32(le32_to_cpu(orig_cqe->immdata));
wc->src_qp = orig_cqe->src_qp;
memcpy(wc->smac, orig_cqe->smac, ETH_ALEN);
if (bnxt_re_is_vlan_pkt(orig_cqe, &vlan_id, &sl)) {
@@ -3727,7 +3727,7 @@ int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc)
(unsigned long)(cqe->qp_handle),
struct bnxt_re_qp, qplib_qp);
wc->qp = &qp->ib_qp;
- wc->ex.imm_data = cqe->immdata;
+ wc->ex.imm_data = cpu_to_be32(le32_to_cpu(cqe->immdata));
wc->src_qp = cqe->src_qp;
memcpy(wc->smac, cqe->smac, ETH_ALEN);
wc->port_num = 1;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
index 4aaac84c1b1b..56538b90d6c5 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
@@ -164,7 +164,7 @@ struct bnxt_qplib_swqe {
/* Send, with imm, inval key */
struct {
union {
- __be32 imm_data;
+ u32 imm_data;
u32 inv_key;
};
u32 q_key;
@@ -182,7 +182,7 @@ struct bnxt_qplib_swqe {
/* RDMA write, with imm, read */
struct {
union {
- __be32 imm_data;
+ u32 imm_data;
u32 inv_key;
};
u64 remote_va;
@@ -389,7 +389,7 @@ struct bnxt_qplib_cqe {
u16 cfa_meta;
u64 wr_id;
union {
- __be32 immdata;
+ __le32 immdata;
u32 invrkey;
};
u64 qp_handle;
--
2.34.1
