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From: Olivier MATZ <olivier.matz@6wind.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	 "dev@dpdk.org" <dev@dpdk.org>
Cc: "jigsaw@gmail.com" <jigsaw@gmail.com>
Subject: Re: [dpdk-dev] [PATCH v2 09/13] mbuf: introduce new checksum API
Date: Tue, 18 Nov 2014 10:10:47 +0100	[thread overview]
Message-ID: <546B0D17.7050503@6wind.com> (raw)
In-Reply-To: <2601191342CEEE43887BDE71AB977258213AE563@IRSMSX105.ger.corp.intel.com>

Hi Konstantin,

On 11/17/2014 07:15 PM, Ananyev, Konstantin wrote:
> Just 2 nits from me:
>
> 1)
>> +static inline uint16_t
>> +rte_raw_cksum(const char *buf, size_t len)
>> +{
> ...
>> +	while (len >= 8) {
>> +		sum += u16[0]; sum += u16[1]; sum += u16[2]; sum += u16[3];
>
> Can you put each expression into a new line?
> sum += u16[0];
> sum += u16[1];
> ...
>
> To make it easier to read.
> Or can it be rewritten just like:
> sum = (uint32_t)u16[0] + u16[1] + u16[2] + u16[3];
> here?
>
> 2)
>> +	while (len >= 8) {
>> +		sum += u16[0]; sum += u16[1]; sum += u16[2]; sum += u16[3];
>> +		len -= 8;
>> +		u16 += 4;
>> +	}
>> +	while (len >= 2) {
>> +		sum += *u16;
>> +		len -= 2;
>> +		u16 += 1;
>> +	}
>
> In the code above, probably use sizeof(u16[0]) wherever appropriate.
> To make things a bit more clearer and consistent.
> ...
> while (len >=  4 * sizeof(u16[0]))
> len -= 4 * sizeof(u16[0]);
> u16 += 4;
> ...
> Same for second loop

OK, I push that in the todo list for the v3.

Thanks,
Olivier

  reply	other threads:[~2014-11-18  9:00 UTC|newest]

Thread overview: 112+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-10 15:59 [dpdk-dev] [PATCH 00/12] add TSO support Olivier Matz
2014-11-10 15:59 ` [dpdk-dev] [PATCH 01/12] igb/ixgbe: fix IP checksum calculation Olivier Matz
2014-11-10 15:59 ` [dpdk-dev] [PATCH 02/12] ixgbe: fix remaining pkt_flags variable size to 64 bits Olivier Matz
2014-11-10 16:59   ` Bruce Richardson
2014-11-10 15:59 ` [dpdk-dev] [PATCH 03/12] mbuf: move vxlan_cksum flag definition at the proper place Olivier Matz
2014-11-10 17:09   ` Bruce Richardson
2014-11-10 15:59 ` [dpdk-dev] [PATCH 04/12] mbuf: add help about TX checksum flags Olivier Matz
2014-11-10 17:10   ` Bruce Richardson
2014-11-10 15:59 ` [dpdk-dev] [PATCH 05/12] mbuf: remove too specific PKT_TX_OFFLOAD_MASK definition Olivier Matz
2014-11-10 17:14   ` Bruce Richardson
2014-11-10 20:59     ` Olivier MATZ
2014-11-10 15:59 ` [dpdk-dev] [PATCH 06/12] mbuf: add functions to get the name of an ol_flag Olivier Matz
2014-11-10 17:29   ` Bruce Richardson
2014-11-10 20:54     ` Olivier MATZ
2014-11-12 17:21     ` Ananyev, Konstantin
2014-11-12 17:44       ` Olivier MATZ
2014-11-10 15:59 ` [dpdk-dev] [PATCH 07/12] mbuf: generic support for TCP segmentation offload Olivier Matz
2014-11-11  3:17   ` Liu, Jijiang
2014-11-12 13:09   ` Ananyev, Konstantin
2014-11-10 15:59 ` [dpdk-dev] [PATCH 08/12] ixgbe: support " Olivier Matz
2014-11-10 15:59 ` [dpdk-dev] [PATCH 09/12] testpmd: fix use of offload flags in testpmd Olivier Matz
2014-11-10 15:59 ` [dpdk-dev] [PATCH 10/12] testpmd: rework csum forward engine Olivier Matz
2014-11-11  8:35   ` Liu, Jijiang
2014-11-11  9:55     ` Olivier MATZ
2014-11-10 15:59 ` [dpdk-dev] [PATCH 11/12] testpmd: support TSO in " Olivier Matz
2014-11-10 15:59 ` [dpdk-dev] [PATCH 12/12] testpmd: add a verbose mode " Olivier Matz
2014-11-11  9:21 ` [dpdk-dev] [PATCH 00/12] add TSO support Olivier MATZ
2014-11-11  9:48   ` Olivier MATZ
2014-11-14 17:03 ` [dpdk-dev] [PATCH v2 00/13] " Olivier Matz
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 01/13] igb/ixgbe: fix IP checksum calculation Olivier Matz
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 02/13] ixgbe: fix remaining pkt_flags variable size to 64 bits Olivier Matz
2014-11-17 16:47     ` Walukiewicz, Miroslaw
2014-11-17 17:03       ` Olivier MATZ
2014-11-17 17:40         ` Thomas Monjalon
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 03/13] mbuf: move vxlan_cksum flag definition at the proper place Olivier Matz
2014-11-17 22:05     ` Thomas Monjalon
2014-11-18 14:10       ` Olivier MATZ
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 04/13] mbuf: add help about TX checksum flags Olivier Matz
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 05/13] mbuf: remove too specific PKT_TX_OFFLOAD_MASK definition Olivier Matz
2014-11-17 10:35     ` Bruce Richardson
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 06/13] mbuf: add functions to get the name of an ol_flag Olivier Matz
2014-11-17 10:39     ` Bruce Richardson
2014-11-17 12:51       ` Olivier MATZ
2014-11-17 19:00     ` Ananyev, Konstantin
2014-11-18  9:29       ` Olivier MATZ
2014-11-19 11:06         ` Ananyev, Konstantin
2014-11-25 10:37           ` Ananyev, Konstantin
2014-11-25 12:15             ` Zhang, Helin
2014-11-25 12:37               ` Olivier MATZ
2014-11-25 13:31                 ` Zhang, Helin
2014-11-25 13:49               ` Ananyev, Konstantin
2014-11-26  0:58                 ` Zhang, Helin
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 07/13] testpmd: fix use of offload flags in testpmd Olivier Matz
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 08/13] testpmd: rework csum forward engine Olivier Matz
2014-11-17  8:11     ` Liu, Jijiang
2014-11-17 13:00       ` Olivier MATZ
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 09/13] mbuf: introduce new checksum API Olivier Matz
2014-11-17 18:15     ` Ananyev, Konstantin
2014-11-18  9:10       ` Olivier MATZ [this message]
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 10/13] mbuf: generic support for TCP segmentation offload Olivier Matz
2014-11-17 23:33     ` Ananyev, Konstantin
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 11/13] ixgbe: support " Olivier Matz
2014-11-17 18:26     ` Ananyev, Konstantin
2014-11-18  9:11       ` Olivier MATZ
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 12/13] testpmd: support TSO in csum forward engine Olivier Matz
2014-11-14 17:03   ` [dpdk-dev] [PATCH v2 13/13] testpmd: add a verbose mode " Olivier Matz
2014-11-20 22:58   ` [dpdk-dev] [PATCH v3 00/13] add TSO support Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 01/13] igb/ixgbe: fix IP checksum calculation Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 02/13] ixgbe: fix remaining pkt_flags variable size to 64 bits Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 03/13] mbuf: reorder tx ol_flags Olivier Matz
2014-11-25 10:22       ` Thomas Monjalon
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 04/13] mbuf: add help about TX checksum flags Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 05/13] mbuf: remove too specific PKT_TX_OFFLOAD_MASK definition Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 06/13] mbuf: add functions to get the name of an ol_flag Olivier Matz
2014-11-25 10:23       ` Thomas Monjalon
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 07/13] testpmd: fix use of offload flags in testpmd Olivier Matz
2014-11-25 11:52       ` Ananyev, Konstantin
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 08/13] testpmd: rework csum forward engine Olivier Matz
2014-11-26 10:10       ` Ananyev, Konstantin
2014-11-26 11:14         ` Olivier MATZ
2014-11-26 12:25           ` Ananyev, Konstantin
2014-11-26 14:55             ` Olivier MATZ
2014-11-26 16:34               ` Ananyev, Konstantin
2014-11-27  8:34                 ` Liu, Jijiang
2014-11-26 13:59           ` Liu, Jijiang
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 09/13] mbuf: introduce new checksum API Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 10/13] mbuf: generic support for TCP segmentation offload Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 11/13] ixgbe: support " Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 12/13] testpmd: support TSO in csum forward engine Olivier Matz
2014-11-20 22:58     ` [dpdk-dev] [PATCH v3 13/13] testpmd: add a verbose mode " Olivier Matz
2014-11-26 15:04     ` [dpdk-dev] [PATCH v4 00/13] add TSO support Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 01/13] igb/ixgbe: fix IP checksum calculation Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 02/13] ixgbe: fix remaining pkt_flags variable size to 64 bits Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 03/13] mbuf: reorder tx ol_flags Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 04/13] mbuf: add help about TX checksum flags Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 05/13] mbuf: remove too specific PKT_TX_OFFLOAD_MASK definition Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 06/13] mbuf: add functions to get the name of an ol_flag Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 07/13] testpmd: fix use of offload flags in testpmd Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 08/13] testpmd: rework csum forward engine Olivier Matz
2014-11-26 20:02         ` Ananyev, Konstantin
2014-11-27  8:26           ` Liu, Jijiang
2014-11-27  9:10           ` Olivier MATZ
2014-11-27 11:02             ` Ananyev, Konstantin
2014-11-28  8:54               ` Liu, Jijiang
2014-11-28  9:54                 ` Olivier MATZ
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 09/13] mbuf: introduce new checksum API Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 10/13] mbuf: generic support for TCP segmentation offload Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 11/13] ixgbe: support " Olivier Matz
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 12/13] testpmd: support TSO in csum forward engine Olivier Matz
2014-11-26 21:23         ` Ananyev, Konstantin
2014-11-26 15:04       ` [dpdk-dev] [PATCH v4 13/13] testpmd: add a verbose mode " Olivier Matz
2014-11-26 18:30       ` [dpdk-dev] [PATCH v4 00/13] add TSO support Thomas Monjalon

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