5.4-stable review patch. If anyone has any objections, please let me know.
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From: Jack Wang jinpu.wang@ionos.com
[ Upstream commit 95b087f87b780daafad1dbb2c84e81b729d5d33f ]
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 confirmed 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@ionos.com Link: https://lore.kernel.org/r/20240710122102.37569-1-jinpu.wang@ionos.com Acked-by: Selvin Xavier selvin.xavier@broadcom.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 c9a7c03403ac0..4a1c11bdc4adc 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -2271,7 +2271,7 @@ 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; @@ -2301,7 +2301,7 @@ 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; @@ -3250,7 +3250,7 @@ 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)) { @@ -3391,7 +3391,7 @@ int bnxt_re_poll_cq(struct ib_cq *ib_cq, int num_entries, struct ib_wc *wc) continue; } 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 99e0a13cbefaf..ff0f7b1095070 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h @@ -145,7 +145,7 @@ struct bnxt_qplib_swqe { /* Send, with imm, inval key */ struct { union { - __be32 imm_data; + u32 imm_data; u32 inv_key; }; u32 q_key; @@ -163,7 +163,7 @@ struct bnxt_qplib_swqe { /* RDMA write, with imm, read */ struct { union { - __be32 imm_data; + u32 imm_data; u32 inv_key; }; u64 remote_va; @@ -350,7 +350,7 @@ struct bnxt_qplib_cqe { u16 cfa_meta; u64 wr_id; union { - __be32 immdata; + __le32 immdata; u32 invrkey; }; u64 qp_handle;