Re: [dpdk-dev] [PATCH] i40e: bug fix of compile error

["Qiu, Michael" <michael.qiu@intel.com>]

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On 12/2/2014 8:36 AM, Zhang, Helin wrote:
>
>> -----Original Message-----
>> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
>> Sent: Monday, December 1, 2014 7:13 PM
>> To: Zhang, Helin
>> Cc: dev@dpdk.org
>> Subject: Re: [dpdk-dev] [PATCH] i40e: bug fix of compile error
>>
>> 2014-12-01 15:33, Helin Zhang:
>>> The compile error will occur as below when set
>> 'RTE_LIBRTE_I40E_16BYTE_RX_DESC=y'.
>>> The changes is just to fix it.
>>>
>>> lib/librte_pmd_i40e/i40e_rxtx.c: In function i40e_rxd_build_fdir:
>>> lib/librte_pmd_i40e/i40e_rxtx.c:431:28: error: volatile union
>>> <anonymous> has no member named fd
>>> lib/librte_pmd_i40e/i40e_rxtx.c:427:19: error: unused variable flexbl
>>> [-Werror=unused-variable]
>>> lib/librte_pmd_i40e/i40e_rxtx.c:427:11: error: unused variable flexbh
>>> [-Werror=unused-variable]
>> It would be nice to reference the commit which introduced the error and explain
>> it a bit.
>>
>>> -			rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.flex_bytes_hi);
>>> +			rte_le_to_cpu_32(
>>> +			rxdp->wb.qword3.hi_dword.flex_bytes_hi);
>> [...]
>>> -			rte_le_to_cpu_32(rxdp->wb.qword3.lo_dword.flex_bytes_lo);
>>> +			rte_le_to_cpu_32(
>>> +			rxdp->wb.qword3.lo_dword.flex_bytes_lo);
>> Why are you wrapping these lines (with wrong indentation)?
>> It makes the fix confuse.
> Sorry, it is a code style fix, as the length of the line should not be more than 80.
> Do I need to split the patch or add more commit logs?

I think this coding style fix is not good enough,

		mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword3
						    .hi_dword.fd_id);

This would be better :)

See the attached diff file, so sorry I indeed do not know how to add
diff file in the email(except git send-email), So I just attached it.

>
>> --
>> Thomas
> Regards,
> Helin
>


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diff --git a/lib/librte_pmd_i40e/i40e_rxtx.c b/lib/librte_pmd_i40e/i40e_rxtx.c
index 2d2ef04..e0264fc 100644
--- a/lib/librte_pmd_i40e/i40e_rxtx.c
+++ b/lib/librte_pmd_i40e/i40e_rxtx.c
@@ -427,8 +427,7 @@ i40e_rxd_build_fdir(volatile union i40e_rx_desc *rxdp, struct rte_mbuf *mb)
 	uint16_t flexbh, flexbl;
 
 #ifdef RTE_LIBRTE_I40E_16BYTE_RX_DESC
-	mb->hash.fdir.hi =
-		rte_le_to_cpu_32(rxdp->wb.qword0.hi_dword.fd);
+	mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword0.hi_dword.fd);
 	flags |= PKT_RX_FDIR_ID;
 #else
 	flexbh = (rte_le_to_cpu_32(rxdp->wb.qword2.ext_status) >>
@@ -440,17 +439,17 @@ i40e_rxd_build_fdir(volatile union i40e_rx_desc *rxdp, struct rte_mbuf *mb)
 
 
 	if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FD_ID) {
-		mb->hash.fdir.hi =
-			rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.fd_id);
+		mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword3
+						    .hi_dword.fd_id);
 		flags |= PKT_RX_FDIR_ID;
 	} else if (flexbh == I40E_RX_DESC_EXT_STATUS_FLEXBH_FLEX) {
-		mb->hash.fdir.hi =
-			rte_le_to_cpu_32(rxdp->wb.qword3.hi_dword.flex_bytes_hi);
+		mb->hash.fdir.hi = rte_le_to_cpu_32(rxdp->wb.qword3
+						    .hi_dword.flex_bytes_hi);
 		flags |= PKT_RX_FDIR_FLX;
 	}
 	if (flexbl == I40E_RX_DESC_EXT_STATUS_FLEXBL_FLEX) {
-		mb->hash.fdir.lo =
-			rte_le_to_cpu_32(rxdp->wb.qword3.lo_dword.flex_bytes_lo);
+		mb->hash.fdir.lo = rte_le_to_cpu_32(rxdp->wb.qword3
+						    .lo_dword.flex_bytes_lo);
 		flags |= PKT_RX_FDIR_FLX;
 	}
 #endif