patch 'common/mlx5: fix error CQE handling for 128 bytes CQE' has been queued to stable release 22.11.7

[luca.boccassi@gmail.com]

Hi,

FYI, your patch has been queued to stable release 22.11.7

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/22/24. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/aabf15baa5fc8bb69947b206169e33b1b1152023

Thanks.

Luca Boccassi

---
From aabf15baa5fc8bb69947b206169e33b1b1152023 Mon Sep 17 00:00:00 2001
From: Alexander Kozyrev <akozyrev@nvidia.com>
Date: Mon, 28 Oct 2024 19:17:07 +0200
Subject: [PATCH] common/mlx5: fix error CQE handling for 128 bytes CQE

[ upstream commit 3cddeba0ca38b00c7dc646277484d08a4cb2d862 ]

The completion queue element size can be independently configured
to report either 64 or 128 bytes CQEs by programming cqe_sz parameter
at CQ creation. This parameter depends on the cache line size and
affects both regular CQEs and error CQEs. But the error handling
assumes that an error CQE is 64 bytes and doesn't take the padding
into consideration on platforms with 128-byte cache lines.
Fix the error CQE size in all error handling routines in mlx5.

Fixes: 957e45fb7bcb ("net/mlx5: handle Tx completion with error")

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/common/mlx5/mlx5_prm.h              | 29 ++++++++++++++++++++-
 drivers/common/mlx5/windows/mlx5_win_defs.h | 12 ---------
 drivers/compress/mlx5/mlx5_compress.c       |  4 +--
 drivers/net/mlx5/mlx5_flow_aso.c            |  6 ++---
 drivers/net/mlx5/mlx5_rx.c                  |  2 +-
 drivers/net/mlx5/mlx5_tx.c                  |  8 +++---
 6 files changed, 38 insertions(+), 23 deletions(-)

diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index f2cd353672..696c59d0fd 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -262,8 +262,12 @@
 /* Maximum number of DS in WQE. Limited by 6-bit field. */
 #define MLX5_DSEG_MAX 63
 
-/* The 32 bit syndrome offset in struct mlx5_err_cqe. */
+/* The 32 bit syndrome offset in struct mlx5_error_cqe. */
+#if (RTE_CACHE_LINE_SIZE == 128)
+#define MLX5_ERROR_CQE_SYNDROME_OFFSET 116
+#else
 #define MLX5_ERROR_CQE_SYNDROME_OFFSET 52
+#endif
 
 /* The completion mode offset in the WQE control segment line 2. */
 #define MLX5_COMP_MODE_OFFSET 2
@@ -403,6 +407,29 @@ struct mlx5_wqe_mprq {
 
 #define MLX5_MPRQ_STRIDE_SHIFT_BYTE 2
 
+struct mlx5_error_cqe {
+#if (RTE_CACHE_LINE_SIZE == 128)
+	uint8_t padding[64];
+#endif
+	uint8_t rsvd0[2];
+	uint16_t eth_wqe_id;
+	uint8_t	rsvd1[16];
+	uint16_t ib_stride_index;
+	uint8_t	rsvd2[10];
+	uint32_t srqn;
+	uint8_t	rsvd3[8];
+	uint32_t byte_cnt;
+	uint8_t	rsvd4[4];
+	uint8_t	hw_err_synd;
+	uint8_t	hw_synd_type;
+	uint8_t	vendor_err_synd;
+	uint8_t	syndrome;
+	uint32_t s_wqe_opcode_qpn;
+	uint16_t wqe_counter;
+	uint8_t	signature;
+	uint8_t	op_own;
+};
+
 /* CQ element structure - should be equal to the cache line size */
 struct mlx5_cqe {
 #if (RTE_CACHE_LINE_SIZE == 128)
diff --git a/drivers/common/mlx5/windows/mlx5_win_defs.h b/drivers/common/mlx5/windows/mlx5_win_defs.h
index 65da820c5e..1ddf5c553d 100644
--- a/drivers/common/mlx5/windows/mlx5_win_defs.h
+++ b/drivers/common/mlx5/windows/mlx5_win_defs.h
@@ -219,18 +219,6 @@ struct mlx5_action {
 	} dest_tir;
 };
 
-struct mlx5_err_cqe {
-	uint8_t		rsvd0[32];
-	uint32_t	srqn;
-	uint8_t		rsvd1[18];
-	uint8_t		vendor_err_synd;
-	uint8_t		syndrome;
-	uint32_t	s_wqe_opcode_qpn;
-	uint16_t	wqe_counter;
-	uint8_t		signature;
-	uint8_t		op_own;
-};
-
 struct mlx5_wqe_srq_next_seg {
 	uint8_t			rsvd0[2];
 	rte_be16_t		next_wqe_index;
diff --git a/drivers/compress/mlx5/mlx5_compress.c b/drivers/compress/mlx5/mlx5_compress.c
index c4bf62ed41..5a4095b3a0 100644
--- a/drivers/compress/mlx5/mlx5_compress.c
+++ b/drivers/compress/mlx5/mlx5_compress.c
@@ -536,7 +536,7 @@ mlx5_compress_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe,
 	size_t i;
 
 	DRV_LOG(ERR, "Error cqe:");
-	for (i = 0; i < sizeof(struct mlx5_err_cqe) >> 2; i += 4)
+	for (i = 0; i < sizeof(struct mlx5_error_cqe) >> 2; i += 4)
 		DRV_LOG(ERR, "%08X %08X %08X %08X", cqe[i], cqe[i + 1],
 			cqe[i + 2], cqe[i + 3]);
 	DRV_LOG(ERR, "\nError wqe:");
@@ -554,7 +554,7 @@ mlx5_compress_cqe_err_handle(struct mlx5_compress_qp *qp,
 			     struct rte_comp_op *op)
 {
 	const uint32_t idx = qp->ci & (qp->entries_n - 1);
-	volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *)
+	volatile struct mlx5_error_cqe *cqe = (volatile struct mlx5_error_cqe *)
 							      &qp->cq.cqes[idx];
 	volatile struct mlx5_gga_wqe *wqes = (volatile struct mlx5_gga_wqe *)
 								    qp->qp.wqes;
diff --git a/drivers/net/mlx5/mlx5_flow_aso.c b/drivers/net/mlx5/mlx5_flow_aso.c
index 8441be3dea..805144e27e 100644
--- a/drivers/net/mlx5/mlx5_flow_aso.c
+++ b/drivers/net/mlx5/mlx5_flow_aso.c
@@ -489,7 +489,7 @@ mlx5_aso_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe)
 	int i;
 
 	DRV_LOG(ERR, "Error cqe:");
-	for (i = 0; i < 16; i += 4)
+	for (i = 0; i < (int)sizeof(struct mlx5_error_cqe) / 4; i += 4)
 		DRV_LOG(ERR, "%08X %08X %08X %08X", cqe[i], cqe[i + 1],
 			cqe[i + 2], cqe[i + 3]);
 	DRV_LOG(ERR, "\nError wqe:");
@@ -509,8 +509,8 @@ mlx5_aso_cqe_err_handle(struct mlx5_aso_sq *sq)
 {
 	struct mlx5_aso_cq *cq = &sq->cq;
 	uint32_t idx = cq->cq_ci & ((1 << cq->log_desc_n) - 1);
-	volatile struct mlx5_err_cqe *cqe =
-			(volatile struct mlx5_err_cqe *)&cq->cq_obj.cqes[idx];
+	volatile struct mlx5_error_cqe *cqe =
+			(volatile struct mlx5_error_cqe *)&cq->cq_obj.cqes[idx];
 
 	cq->errors++;
 	idx = rte_be_to_cpu_16(cqe->wqe_counter) & (1u << sq->log_desc_n);
diff --git a/drivers/net/mlx5/mlx5_rx.c b/drivers/net/mlx5/mlx5_rx.c
index 56e5568f33..0762782217 100644
--- a/drivers/net/mlx5/mlx5_rx.c
+++ b/drivers/net/mlx5/mlx5_rx.c
@@ -451,7 +451,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec,
 			container_of(rxq, struct mlx5_rxq_ctrl, rxq);
 	union {
 		volatile struct mlx5_cqe *cqe;
-		volatile struct mlx5_err_cqe *err_cqe;
+		volatile struct mlx5_error_cqe *err_cqe;
 	} u = {
 		.cqe = &(*rxq->cqes)[(rxq->cq_ci - vec) & cqe_mask],
 	};
diff --git a/drivers/net/mlx5/mlx5_tx.c b/drivers/net/mlx5/mlx5_tx.c
index 14e1487e59..8b1a0ca3d3 100644
--- a/drivers/net/mlx5/mlx5_tx.c
+++ b/drivers/net/mlx5/mlx5_tx.c
@@ -55,7 +55,7 @@ tx_recover_qp(struct mlx5_txq_ctrl *txq_ctrl)
 
 /* Return 1 if the error CQE is signed otherwise, sign it and return 0. */
 static int
-check_err_cqe_seen(volatile struct mlx5_err_cqe *err_cqe)
+check_err_cqe_seen(volatile struct mlx5_error_cqe *err_cqe)
 {
 	static const uint8_t magic[] = "seen";
 	int ret = 1;
@@ -83,7 +83,7 @@ check_err_cqe_seen(volatile struct mlx5_err_cqe *err_cqe)
  */
 static int
 mlx5_tx_error_cqe_handle(struct mlx5_txq_data *__rte_restrict txq,
-			 volatile struct mlx5_err_cqe *err_cqe)
+			 volatile struct mlx5_error_cqe *err_cqe)
 {
 	if (err_cqe->syndrome != MLX5_CQE_SYNDROME_WR_FLUSH_ERR) {
 		const uint16_t wqe_m = ((1 << txq->wqe_n) - 1);
@@ -107,7 +107,7 @@ mlx5_tx_error_cqe_handle(struct mlx5_txq_data *__rte_restrict txq,
 			mlx5_dump_debug_information(name, "MLX5 Error CQ:",
 						    (const void *)((uintptr_t)
 						    txq->cqes),
-						    sizeof(struct mlx5_cqe) *
+						    sizeof(struct mlx5_error_cqe) *
 						    (1 << txq->cqe_n));
 			mlx5_dump_debug_information(name, "MLX5 Error SQ:",
 						    (const void *)((uintptr_t)
@@ -206,7 +206,7 @@ mlx5_tx_handle_completion(struct mlx5_txq_data *__rte_restrict txq,
 			 */
 			rte_wmb();
 			ret = mlx5_tx_error_cqe_handle
-				(txq, (volatile struct mlx5_err_cqe *)cqe);
+				(txq, (volatile struct mlx5_error_cqe *)cqe);
 			if (unlikely(ret < 0)) {
 				/*
 				 * Some error occurred on queue error
-- 
2.45.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-11-20 23:41:23.239256500 +0000
+++ 0015-common-mlx5-fix-error-CQE-handling-for-128-bytes-CQE.patch	2024-11-20 23:41:22.716195467 +0000
@@ -1 +1 @@
-From 3cddeba0ca38b00c7dc646277484d08a4cb2d862 Mon Sep 17 00:00:00 2001
+From aabf15baa5fc8bb69947b206169e33b1b1152023 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 3cddeba0ca38b00c7dc646277484d08a4cb2d862 ]
+
@@ -15 +16,0 @@
-Cc: stable@dpdk.org
@@ -23,3 +23,0 @@
- drivers/crypto/mlx5/mlx5_crypto_gcm.c       |  2 +-
- drivers/crypto/mlx5/mlx5_crypto_xts.c       |  2 +-
- drivers/net/mlx5/hws/mlx5dr_send.c          |  2 +-
@@ -29 +27 @@
- 9 files changed, 41 insertions(+), 26 deletions(-)
+ 6 files changed, 38 insertions(+), 23 deletions(-)
@@ -32 +30 @@
-index 359f02f17c..210158350d 100644
+index f2cd353672..696c59d0fd 100644
@@ -35 +33 @@
-@@ -268,8 +268,12 @@
+@@ -262,8 +262,12 @@
@@ -49 +47 @@
-@@ -415,6 +419,29 @@ struct mlx5_wqe_mprq {
+@@ -403,6 +407,29 @@ struct mlx5_wqe_mprq {
@@ -80 +78 @@
-index 79e7a7f386..d60df6fd37 100644
+index 65da820c5e..1ddf5c553d 100644
@@ -103 +101 @@
-index 5998d060e4..82105bfebd 100644
+index c4bf62ed41..5a4095b3a0 100644
@@ -106 +104 @@
-@@ -602,7 +602,7 @@ mlx5_compress_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe,
+@@ -536,7 +536,7 @@ mlx5_compress_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe,
@@ -115 +113 @@
-@@ -620,7 +620,7 @@ mlx5_compress_cqe_err_handle(struct mlx5_compress_qp *qp,
+@@ -554,7 +554,7 @@ mlx5_compress_cqe_err_handle(struct mlx5_compress_qp *qp,
@@ -124,39 +121,0 @@
-diff --git a/drivers/crypto/mlx5/mlx5_crypto_gcm.c b/drivers/crypto/mlx5/mlx5_crypto_gcm.c
-index f598273873..cd21605bd2 100644
---- a/drivers/crypto/mlx5/mlx5_crypto_gcm.c
-+++ b/drivers/crypto/mlx5/mlx5_crypto_gcm.c
-@@ -877,7 +877,7 @@ mlx5_crypto_gcm_cqe_err_handle(struct mlx5_crypto_qp *qp, struct rte_crypto_op *
- {
- 	uint8_t op_code;
- 	const uint32_t idx = qp->cq_ci & (qp->entries_n - 1);
--	volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *)
-+	volatile struct mlx5_error_cqe *cqe = (volatile struct mlx5_error_cqe *)
- 							&qp->cq_obj.cqes[idx];
- 
- 	op_code = rte_be_to_cpu_32(cqe->s_wqe_opcode_qpn) >> MLX5_CQ_INDEX_WIDTH;
-diff --git a/drivers/crypto/mlx5/mlx5_crypto_xts.c b/drivers/crypto/mlx5/mlx5_crypto_xts.c
-index d4e1dd718c..b9214711ac 100644
---- a/drivers/crypto/mlx5/mlx5_crypto_xts.c
-+++ b/drivers/crypto/mlx5/mlx5_crypto_xts.c
-@@ -363,7 +363,7 @@ static __rte_noinline void
- mlx5_crypto_xts_cqe_err_handle(struct mlx5_crypto_qp *qp, struct rte_crypto_op *op)
- {
- 	const uint32_t idx = qp->ci & (qp->entries_n - 1);
--	volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *)
-+	volatile struct mlx5_error_cqe *cqe = (volatile struct mlx5_error_cqe *)
- 							&qp->cq_obj.cqes[idx];
- 
- 	op->status = RTE_CRYPTO_OP_STATUS_ERROR;
-diff --git a/drivers/net/mlx5/hws/mlx5dr_send.c b/drivers/net/mlx5/hws/mlx5dr_send.c
-index e9abf3dddb..e121c7f7ed 100644
---- a/drivers/net/mlx5/hws/mlx5dr_send.c
-+++ b/drivers/net/mlx5/hws/mlx5dr_send.c
-@@ -599,7 +599,7 @@ static void mlx5dr_send_engine_poll_cq(struct mlx5dr_send_engine *queue,
- 		return;
- 
- 	if (unlikely(cqe_opcode != MLX5_CQE_REQ)) {
--		struct mlx5_err_cqe *err_cqe = (struct mlx5_err_cqe *)cqe;
-+		struct mlx5_error_cqe *err_cqe = (struct mlx5_error_cqe *)cqe;
- 
- 		DR_LOG(ERR, "CQE ERR:0x%x, Vendor_ERR:0x%x, OP:0x%x, QPN:0x%x, WQE_CNT:0x%x",
- 			err_cqe->syndrome, err_cqe->vendor_err_synd, cqe_opcode,
@@ -164 +123 @@
-index a94b228396..feca8c3e89 100644
+index 8441be3dea..805144e27e 100644
@@ -188 +147 @@
-index f241809e08..5e58eb8bc9 100644
+index 56e5568f33..0762782217 100644
@@ -191 +150 @@
-@@ -459,7 +459,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec,
+@@ -451,7 +451,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec,
@@ -201 +160 @@
-index fc105970a3..4286876e12 100644
+index 14e1487e59..8b1a0ca3d3 100644