From: Shahaf Shuler <shahafs@mellanox.com>
To: Yongseok Koh <yskoh@mellanox.com>
Cc: "Nélio Laranjeiro" <nelio.laranjeiro@6wind.com>,
"Adrien Mazarguil" <adrien.mazarguil@6wind.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH v4 4/4] net/mlx5: enforce Tx num of segments limitation
Date: Thu, 14 Sep 2017 05:23:31 +0000 [thread overview]
Message-ID: <VI1PR05MB314906722B51E9FC48BE8621C36F0@VI1PR05MB3149.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20170913195154.GA4263@yongseok-MBP.local>
Hi Yongseok,
Wednesday, September 13, 2017 10:52 PM, Yongseok Koh:
> >
> > +/* Maximum number of DS in WQE. */
> > +#define MLX5_MAX_DS 63
> How about make it consistent with MLX5_MPW_DSEG_MAX by naming
> MLX5_DSEG_MAX?
>
It doesn't have the same meaning.
The MLX5_MPW_DSEG_MAX is to limit the number of mbuf segments (buf->nb_segs) for multi packet wqe. The inline part is taken into account differently.
The MLX_MAX_DS is to limit the number data segments (i.e. MLX5_WQE_DWORD_SIZE) that could be set into a WQE. This includes everything (inline, ctrl seg, eth seg, pointers).
For the regular Tx burst there are many options for different inline sizes which impact on the max number of mbuf segments possible.
BTW - am still not sure why we have the MLX5_MPW_DSEG_MAX limitation.
next prev parent reply other threads:[~2017-09-14 5:23 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-23 7:33 [dpdk-stable] [PATCH 1/2] net/mlx5: fix num seg assumption on vPMD Shahaf Shuler
2017-08-23 7:33 ` [dpdk-stable] [PATCH 2/2] net/mlx5: enforce Tx num of segments limitation Shahaf Shuler
2017-08-24 13:28 ` Nélio Laranjeiro
2017-08-24 13:23 ` [dpdk-stable] [PATCH 1/2] net/mlx5: fix num seg assumption on vPMD Nélio Laranjeiro
2017-08-30 7:07 ` [dpdk-stable] [PATCH v2 " Shahaf Shuler
2017-09-04 14:57 ` Nélio Laranjeiro
2017-09-11 12:50 ` [dpdk-stable] [PATCH v3 1/3] " Shahaf Shuler
2017-09-13 10:50 ` [dpdk-stable] [PATCH v4 1/4] " Shahaf Shuler
2017-09-14 10:50 ` [dpdk-stable] [PATCH v5 " Shahaf Shuler
2017-09-15 10:51 ` Ferruh Yigit
2017-09-14 10:50 ` [dpdk-stable] [PATCH v5 2/4] net/mlx5: fix Tx stats error counter definition Shahaf Shuler
2017-09-14 10:50 ` [dpdk-stable] [PATCH v5 3/4] net/mlx5: fix Tx stats error counter logic Shahaf Shuler
2017-09-14 10:50 ` [dpdk-stable] [PATCH v5 4/4] net/mlx5: enforce Tx num of segments limitation Shahaf Shuler
2017-09-14 19:21 ` Yongseok Koh
2017-09-15 8:11 ` Nélio Laranjeiro
2017-09-13 10:50 ` [dpdk-stable] [PATCH v4 2/4] net/mlx5: fix Tx stats error counter definition Shahaf Shuler
2017-09-13 17:59 ` Yongseok Koh
2017-09-14 8:11 ` Nélio Laranjeiro
2017-09-13 10:50 ` [dpdk-stable] [PATCH v4 3/4] net/mlx5: fix Tx stats error counter logic Shahaf Shuler
2017-09-13 18:17 ` Yongseok Koh
2017-09-14 8:12 ` Nélio Laranjeiro
2017-09-13 10:50 ` [dpdk-stable] [PATCH v4 4/4] net/mlx5: enforce Tx num of segments limitation Shahaf Shuler
2017-09-13 19:51 ` Yongseok Koh
2017-09-14 5:23 ` Shahaf Shuler [this message]
2017-09-14 8:05 ` Yongseok Koh
2017-09-11 12:50 ` [dpdk-stable] [PATCH v3 2/3] net/mlx5: fix Tx stats error counter Shahaf Shuler
2017-09-11 12:50 ` [dpdk-stable] [PATCH v3 3/3] net/mlx5: enforce Tx num of segments limitation Shahaf Shuler
2017-08-30 7:07 ` [dpdk-stable] [PATCH v2 2/2] " Shahaf Shuler
2017-09-04 14:57 ` Nélio Laranjeiro
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