libhns: Add general error type for CQE

If a Work Request posted in an RQ of UD QP isn't big enough for holding the
incoming message, then the hns ROCEE will generate a general error CQE. The
IB specification does not specify this type of CQE.

In the case of unreliable communication, it is not desirable to change the
QP to an error state due to an insufficient receive length error. So If the
hns ROCEE reports a general error CQE, it's no need to set the QP to an
error state, and the driver should skip it.

Signed-off-by: Youming Luo <luoyouming@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>

providers/hns/hns_roce_u_hw_v2.c

@@ -166,6 +166,7 @@ static enum ibv_wc_status get_wc_status(uint8_t status)
 		{ HNS_ROCE_V2_CQE_TRANSPORT_RETRY_EXC_ERR, IBV_WC_RETRY_EXC_ERR },
 		{ HNS_ROCE_V2_CQE_RNR_RETRY_EXC_ERR, IBV_WC_RNR_RETRY_EXC_ERR },
 		{ HNS_ROCE_V2_CQE_REMOTE_ABORTED_ERR, IBV_WC_REM_ABORT_ERR },
+		{ HNS_ROCE_V2_CQE_GENERAL_ERR, IBV_WC_GENERAL_ERR },
 		{ HNS_ROCE_V2_CQE_XRC_VIOLATION_ERR, IBV_WC_REM_INV_RD_REQ_ERR },
 	};
 
@@ -671,7 +672,8 @@ static int hns_roce_poll_one(struct hns_roce_context *ctx,
 		cq->verbs_cq.cq_ex.status = wc_status;
 	}
 
-	if (status == HNS_ROCE_V2_CQE_SUCCESS)
+	if (status == HNS_ROCE_V2_CQE_SUCCESS ||
+	    status == HNS_ROCE_V2_CQE_GENERAL_ERR)
 		return V2_CQ_OK;
 
 	/*

providers/hns/hns_roce_u_hw_v2.h

@@ -110,6 +110,7 @@ enum {
 	HNS_ROCE_V2_CQE_TRANSPORT_RETRY_EXC_ERR		= 0x15,
 	HNS_ROCE_V2_CQE_RNR_RETRY_EXC_ERR		= 0x16,
 	HNS_ROCE_V2_CQE_REMOTE_ABORTED_ERR		= 0x22,
+	HNS_ROCE_V2_CQE_GENERAL_ERR			= 0x23,
 	HNS_ROCE_V2_CQE_XRC_VIOLATION_ERR		= 0x24,
 };