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From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Simei Su <simei.su@intel.com>, <qi.z.zhang@intel.com>,
	<xiaolong.ye@intel.com>, <ferruh.yigit@intel.com>
Cc: <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v8 2/3] ethdev: extend RSS offload types
Date: Tue, 1 Oct 2019 17:49:18 +0300	[thread overview]
Message-ID: <155d1d0d-c5cd-2fc1-ad48-345d219bd02f@solarflare.com> (raw)
In-Reply-To: <1569940564-311988-3-git-send-email-simei.su@intel.com>

On 10/1/19 5:36 PM, Simei Su wrote:
> This patch reserves several bits as input set selection from the
> high end of the 64 bits. It is combined with exisiting ETH_RSS_*
> to represent RSS types.
>
> Signed-off-by: Simei Su <simei.su@intel.com>
> Reviewed-by: Qi Zhang <qi.z.zhang@intel.com>
> Acked-by: Ori Kam <orika@mellanox.com>
> ---
>   lib/librte_ethdev/rte_ethdev.c | 22 ++++++++++++++++++++++
>   lib/librte_ethdev/rte_ethdev.h | 14 ++++++++++++++
>   2 files changed, 36 insertions(+)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index af82360..5e5a974 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -1269,6 +1269,17 @@ struct rte_eth_dev *
>   		goto rollback;
>   	}
>   
> +	/* simplified the SRC/DST_ONLY RSS offload modificaiton */
> +	if (dev_conf->rx_adv_conf.rss_conf.rss_hf & ETH_RSS_L3_SRC_ONLY &&
> +		dev_conf->rx_adv_conf.rss_conf.rss_hf & ETH_RSS_L3_DST_ONLY)

I'm afraid some compiler versions could bark about missing parenthesis here.
Consider to use something like:
  (rss_conf->rss_hf & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY) ==
   (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY))
May be parenthesis around & is not required.

> +			dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf &=
> +				~(ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY);
> +
> +	if (dev_conf->rx_adv_conf.rss_conf.rss_hf & ETH_RSS_L4_SRC_ONLY &&
> +		dev_conf->rx_adv_conf.rss_conf.rss_hf & ETH_RSS_L4_DST_ONLY)
> +			dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf &=
> +				~(ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY);
> +

I think it is wrong to duplicate the logic twice (here and below).
Helper static function should be used to avoid it.

>   	/* Check that device supports requested rss hash functions. */
>   	if ((dev_info.flow_type_rss_offloads |
>   	     dev_conf->rx_adv_conf.rss_conf.rss_hf) !=
> @@ -3112,6 +3123,17 @@ struct rte_eth_dev *
>   	if (ret != 0)
>   		return ret;
>   
> +	/* simplified the SRC/DST_ONLY RSS offload modificaiton */
> +	if (rss_conf->rss_hf & ETH_RSS_L3_SRC_ONLY &&
> +		rss_conf->rss_hf & ETH_RSS_L3_DST_ONLY)
> +			rss_conf->rss_hf &=
> +				~(ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY);
> +
> +	if (rss_conf->rss_hf & ETH_RSS_L4_SRC_ONLY &&
> +		rss_conf->rss_hf & ETH_RSS_L4_DST_ONLY)
> +			rss_conf->rss_hf &=
> +				~(ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY);
> +
>   	dev = &rte_eth_devices[port_id];
>   	if ((dev_info.flow_type_rss_offloads | rss_conf->rss_hf) !=
>   	    dev_info.flow_type_rss_offloads) {
> diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
> index 7722f70..6d61b84 100644
> --- a/lib/librte_ethdev/rte_ethdev.h
> +++ b/lib/librte_ethdev/rte_ethdev.h
> @@ -505,6 +505,20 @@ struct rte_eth_rss_conf {
>   #define ETH_RSS_GENEVE             (1ULL << 20)
>   #define ETH_RSS_NVGRE              (1ULL << 21)
>   
> +/*
> + * We use the following macros to combine with above ETH_RSS_* for
> + * more specific input set selection. These bits are defined starting
> + * from the high end of the 64 bits.
> + * Note: If we use above ETH_RSS_* without SRC/DST_ONLY, it represents
> + * both SRC and DST are taken into account. If SRC_ONLY and DST_ONLY of
> + * the same level be used simultaneously, it is the same case as none of
> + * them are added.
> + */
> +#define ETH_RSS_L3_SRC_ONLY        (1ULL << 63)
> +#define ETH_RSS_L3_DST_ONLY        (1ULL << 62)
> +#define ETH_RSS_L4_SRC_ONLY        (1ULL << 61)
> +#define ETH_RSS_L4_DST_ONLY        (1ULL << 60)
> +
>   #define ETH_RSS_IP ( \
>   	ETH_RSS_IPV4 | \
>   	ETH_RSS_FRAG_IPV4 | \


  reply	other threads:[~2019-10-01 14:49 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-09  5:35 [dpdk-dev] [PATCH 0/2] " simei
2019-08-09  5:35 ` [dpdk-dev] [PATCH 1/2] ethdev: " simei
2019-08-09  5:35 ` [dpdk-dev] [PATCH 2/2] app/testpmd: add RSS offload types extending support simei
2019-09-23 14:05 ` [dpdk-dev] [PATCH v2 0/2] extend RSS offload types Simei Su
2019-09-23 14:05   ` [dpdk-dev] [PATCH v2 1/2] ethdev: " Simei Su
2019-09-25 10:27     ` Ye Xiaolong
2019-09-25 12:04       ` Su, Simei
2019-09-25 12:23         ` Ye Xiaolong
2019-09-25 12:42           ` Su, Simei
2019-09-25 10:49     ` Ye Xiaolong
2019-09-25 12:00       ` Su, Simei
2019-09-25 12:22         ` Ye Xiaolong
2019-09-25 12:38           ` Su, Simei
2019-09-23 14:05   ` [dpdk-dev] [PATCH v2 2/2] app/testpmd: add RSS offload types extending support Simei Su
2019-09-24  5:32   ` [dpdk-dev] [PATCH v2 0/2] extend RSS offload types Zhang, Qi Z
2019-09-25 14:06   ` [dpdk-dev] [PATCH v3 " Simei Su
2019-09-25 14:06     ` [dpdk-dev] [PATCH v3 1/2] ethdev: " Simei Su
2019-09-26  9:16       ` Andrew Rybchenko
2019-09-27  5:54         ` Zhang, Qi Z
2019-09-25 14:06     ` [dpdk-dev] [PATCH v3 2/2] app/testpmd: add RSS offload types extending support Simei Su
2019-09-27  8:54     ` [dpdk-dev] [PATCH v4 0/3] extend RSS offload types Simei Su
2019-09-27  8:54       ` [dpdk-dev] [PATCH v4 1/3] ethdev: decouple flow types and " Simei Su
2019-09-29 11:32         ` Andrew Rybchenko
2019-09-27  8:54       ` [dpdk-dev] [PATCH v4 2/3] ethdev: extend " Simei Su
2019-09-28  1:03         ` Zhang, Qi Z
2019-09-28  1:39           ` Su, Simei
2019-09-27  8:54       ` [dpdk-dev] [PATCH v4 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-09-28 16:49         ` Ori Kam
2019-09-29  6:46           ` Su, Simei
2019-09-29  7:21             ` Su, Simei
2019-09-28  2:29       ` [dpdk-dev] [PATCH v5 0/3] extend RSS offload types Simei Su
2019-09-28  2:29         ` [dpdk-dev] [PATCH v5 1/3] ethdev: decouple flow types and " Simei Su
2019-09-28 16:23           ` Ori Kam
2019-09-28  2:29         ` [dpdk-dev] [PATCH v5 2/3] ethdev: extend " Simei Su
2019-09-28 16:26           ` Ori Kam
2019-09-28  2:29         ` [dpdk-dev] [PATCH v5 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-09-29  5:11         ` [dpdk-dev] [PATCH v6 0/3] extend RSS offload types Simei Su
2019-09-29  5:11           ` [dpdk-dev] [PATCH v6 1/3] ethdev: decouple flow types and " Simei Su
2019-09-29  5:11           ` [dpdk-dev] [PATCH v6 2/3] ethdev: extend " Simei Su
2019-09-29 11:40             ` Andrew Rybchenko
2019-09-30  7:49               ` Zhang, Qi Z
2019-09-29  5:11           ` [dpdk-dev] [PATCH v6 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-09-29  7:09           ` [dpdk-dev] [PATCH v7 0/3] extend RSS offload types Simei Su
2019-09-29  7:09             ` [dpdk-dev] [PATCH v7 1/3] ethdev: decouple flow types and " Simei Su
2019-09-29  7:55               ` Yang, Zhiyong
2019-09-29  8:38                 ` Su, Simei
2019-09-29  7:09             ` [dpdk-dev] [PATCH v7 2/3] ethdev: extend " Simei Su
2019-09-29  8:55               ` Su, Simei
2019-09-29  9:15                 ` Su, Simei
2019-09-29  7:09             ` [dpdk-dev] [PATCH v7 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-01 14:36             ` [dpdk-dev] [PATCH v8 0/3] extend RSS offload types Simei Su
2019-10-01 14:36               ` [dpdk-dev] [PATCH v8 1/3] ethdev: decouple flow types and " Simei Su
2019-10-01 14:36               ` [dpdk-dev] [PATCH v8 2/3] ethdev: extend " Simei Su
2019-10-01 14:49                 ` Andrew Rybchenko [this message]
2019-10-01 16:02                   ` Iremonger, Bernard
2019-10-01 16:45                     ` Ferruh Yigit
2019-10-05  4:54                   ` Su, Simei
2019-10-01 14:36               ` [dpdk-dev] [PATCH v8 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-03 11:35               ` [dpdk-dev] [PATCH v9 0/3] extend RSS offload types Simei Su
2019-10-03 11:35                 ` [dpdk-dev] [PATCH v9 1/3] ethdev: decouple flow types and " Simei Su
2019-10-03 11:35                 ` [dpdk-dev] [PATCH v9 2/3] ethdev: extend " Simei Su
2019-10-03 11:35                 ` [dpdk-dev] [PATCH v9 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-04  4:45                 ` [dpdk-dev] [PATCH v10 0/3] extend RSS offload types Simei Su
2019-10-04  4:46                   ` [dpdk-dev] [PATCH v10 1/3] ethdev: decouple flow types and " Simei Su
2019-10-04  4:46                   ` [dpdk-dev] [PATCH v10 2/3] ethdev: extend " Simei Su
2019-10-08 16:45                     ` Andrew Rybchenko
2019-10-09  7:06                       ` Su, Simei
2019-10-04  4:46                   ` [dpdk-dev] [PATCH v10 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-09  6:57                   ` [dpdk-dev] [PATCH v11 0/3] extend RSS offload types Simei Su
2019-10-09  6:57                     ` [dpdk-dev] [PATCH v11 1/3] ethdev: decouple flow types and " Simei Su
2019-10-09  6:57                     ` [dpdk-dev] [PATCH v11 2/3] ethdev: extend " Simei Su
2019-10-09  7:18                       ` Andrew Rybchenko
2019-10-09  7:42                         ` Su, Simei
2019-10-09  7:55                           ` Andrew Rybchenko
2019-10-09  9:08                             ` Su, Simei
2019-10-09  9:32                             ` Zhang, Qi Z
2019-10-10 14:37                               ` Su, Simei
2019-10-09  6:57                     ` [dpdk-dev] [PATCH v11 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-14 13:36                     ` [dpdk-dev] [PATCH v12 0/3] extend RSS offload types Simei Su
2019-10-14 13:36                       ` [dpdk-dev] [PATCH v12 1/3] ethdev: decouple flow types and " Simei Su
2019-10-14 13:36                       ` [dpdk-dev] [PATCH v12 2/3] ethdev: extend " Simei Su
2019-10-15  9:07                         ` Andrew Rybchenko
2019-10-15 10:55                           ` Su, Simei
2019-10-15 11:09                             ` Andrew Rybchenko
2019-10-15 11:21                               ` Su, Simei
2019-10-14 13:36                       ` [dpdk-dev] [PATCH v12 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-15 12:56                       ` [dpdk-dev] [PATCH v13 0/3] extend RSS offload types Simei Su
2019-10-15 12:56                         ` [dpdk-dev] [PATCH v13 1/3] ethdev: decouple flow types and " Simei Su
2019-10-15 12:56                         ` [dpdk-dev] [PATCH v13 2/3] ethdev: extend " Simei Su
2019-10-15 13:07                           ` Andrew Rybchenko
2019-10-15 15:00                             ` Su, Simei
2019-10-15 12:56                         ` [dpdk-dev] [PATCH v13 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-15 15:09                         ` [dpdk-dev] [PATCH v14 0/3] extend RSS offload types Simei Su
2019-10-15 15:09                           ` [dpdk-dev] [PATCH v14 1/3] ethdev: decouple flow types and " Simei Su
2019-10-15 15:09                           ` [dpdk-dev] [PATCH v14 2/3] ethdev: extend " Simei Su
2019-10-15 15:09                           ` [dpdk-dev] [PATCH v14 3/3] app/testpmd: add RSS offload types extending support Simei Su
2019-10-18 11:43                           ` [dpdk-dev] [PATCH v14 0/3] extend RSS offload types Ferruh Yigit

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