File dpdk-CVE-2022-28199.patch of Package dpdk.34787

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File dpdk-CVE-2022-28199.patch of Package dpdk.34787

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index a4f627e1a6..07c994815a 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -931,6 +931,11 @@ mlx5_queue_state_modify(struct rte_eth_dev *dev,
 	return ret;
 }
 
+/* Must be negative. */
+#define MLX5_ERROR_CQE_RET (-1)
+/* Must not be negative. */
+#define MLX5_RECOVERY_ERROR_RET 0
+
 /**
  * Handle a Rx error.
  * The function inserts the RQ state to reset when the first error CQE is
@@ -945,7 +950,7 @@ mlx5_queue_state_modify(struct rte_eth_dev *dev,
  *   0 when called from non-vectorized Rx burst.
  *
  * @return
- *   -1 in case of recovery error, otherwise the CQE status.
+ *   MLX5_RECOVERY_ERROR_RET in case of recovery error, otherwise the CQE status.
  */
 int
 mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
@@ -973,7 +978,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
 		sm.queue_id = rxq->idx;
 		sm.state = IBV_WQS_RESET;
 		if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv), &sm))
-			return -1;
+			return MLX5_RECOVERY_ERROR_RET;
 		if (rxq_ctrl->dump_file_n <
 		    rxq_ctrl->priv->config.max_dump_files_num) {
 			MKSTR(err_str, "Unexpected CQE error syndrome "
@@ -1014,7 +1019,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
 			sm.state = IBV_WQS_RDY;
 			if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv),
 						    &sm))
-				return -1;
+				return MLX5_RECOVERY_ERROR_RET;
 			if (vec) {
 				const uint16_t q_mask = wqe_n - 1;
 				uint16_t elt_idx;
@@ -1036,7 +1041,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
 							rte_pktmbuf_free_seg
 								(*elt);
 						}
-						return -1;
+						return MLX5_RECOVERY_ERROR_RET;
 					}
 				}
 				for (i = 0; i < (int)wqe_n; ++i) {
@@ -1055,7 +1060,7 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
 		}
 		return ret;
 	default:
-		return -1;
+		return MLX5_RECOVERY_ERROR_RET;
 	}
 }
 
@@ -1073,7 +1078,9 @@ mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
  *   written.
  *
  * @return
- *   0 in case of empty CQE, otherwise the packet size in bytes.
+ *   0 in case of empty CQE, MLX5_ERROR_CQE_RET in case of error CQE,
+ *   otherwise the packet size in regular RxQ, and striding byte
+ *   count format in mprq case.
  */
 static inline int
 mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
@@ -1140,8 +1147,8 @@ mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
 					     rxq->err_state)) {
 					ret = mlx5_rx_err_handle(rxq, 0);
 					if (ret == MLX5_CQE_STATUS_HW_OWN ||
-					    ret == -1)
-						return 0;
+					    ret == MLX5_RECOVERY_ERROR_RET)
+						return MLX5_ERROR_CQE_RET;
 				} else {
 					return 0;
 				}
@@ -1350,8 +1357,10 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 		if (!pkt) {
 			cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
 			len = mlx5_rx_poll_len(rxq, cqe, cqe_cnt, &mcqe);
-			if (!len) {
+			if (len <= 0) {
 				rte_mbuf_raw_free(rep);
+				if (unlikely(len == MLX5_ERROR_CQE_RET))
+					rq_ci = rxq->rq_ci << sges_n;
 				break;
 			}
 			pkt = seg;
@@ -1630,8 +1639,13 @@ mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
 		}
 		cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask];
 		ret = mlx5_rx_poll_len(rxq, cqe, cq_mask, &mcqe);
-		if (!ret)
+		if (ret == 0)
 			break;
+		if (unlikely(ret == MLX5_ERROR_CQE_RET)) {
+			rq_ci = rxq->rq_ci;
+			consumed_strd = rxq->consumed_strd;
+			break;
+		}
 		byte_cnt = ret;
 		strd_cnt = (byte_cnt & MLX5_MPRQ_STRIDE_NUM_MASK) >>
 			   MLX5_MPRQ_STRIDE_NUM_SHIFT;

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