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RDMA/bnxt_re: Check cqe flags to know imm_data vs inv_irkey

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Invalidate rkey is cpu endian and immediate data is in big endian format.
Both immediate data and invalidate the remote key returned by
HW is in little endian format.

While handling the commit in fixes tag, the difference between
immediate data and invalidate rkey endianness was not considered.

Without changes of this patch, Kernel ULP was failing while processing
inv_rkey.

dmesg log snippet -
nvme nvme0: Bogus remote invalidation for rkey 0x2000019Fix in this patch

Do endianness conversion based on completion queue entry flag.
Also, the HW completions are already converted to host endianness in
bnxt_qplib_cq_process_res_rc and bnxt_qplib_cq_process_res_ud and there
is no need to convert it again in bnxt_re_poll_cq. Modified the union to
hold the correct data type.

Fixes: 95b087f87b ("bnxt_re: Fix imm_data endianness")
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1730110014-20755-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Kashyap Desai 2024-10-28 03:06:54 -07:00 committed by Leon Romanovsky
parent ea4c990fa9
commit 808ca6de98
2 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -3687,7 +3687,7 @@ 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 = cpu_to_be32(le32_to_cpu(orig_cqe->immdata));
wc->ex.imm_data = cpu_to_be32(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)) {
@ -3832,7 +3832,10 @@ 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 = cpu_to_be32(le32_to_cpu(cqe->immdata));
if (cqe->flags & CQ_RES_RC_FLAGS_IMM)
wc->ex.imm_data = cpu_to_be32(cqe->immdata);
else
wc->ex.invalidate_rkey = cqe->invrkey;
wc->src_qp = cqe->src_qp;
memcpy(wc->smac, cqe->smac, ETH_ALEN);
wc->port_num = 1;

2
drivers/infiniband/hw/bnxt_re/qplib_fp.h
View File

@ -410,7 +410,7 @@ struct bnxt_qplib_cqe {
u16 cfa_meta;
u64 wr_id;
union {
__le32 immdata;
u32 immdata;
u32 invrkey;
};
u64 qp_handle;