From: Thomas Monjalon <thomas@monjalon.net>
To: Xueming Li <xuemingl@mellanox.com>
Cc: dev@dpdk.org, Wenzhuo Lu <wenzhuo.lu@intel.com>,
Jingjing Wu <jingjing.wu@intel.com>,
Yongseok Koh <yskoh@mellanox.com>,
Olivier MATZ <olivier.matz@6wind.com>,
Shahaf Shuler <shahafs@mellanox.com>,
Bernard <bernard.iremonger@intel.com>,
Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH v5 1/2] ethdev: introduce generic IP/UDP tunnel checksum and TSO
Date: Tue, 17 Apr 2018 23:21:55 +0200 [thread overview]
Message-ID: <3801247.KLjoC6WWjY@xps> (raw)
In-Reply-To: <20180417144759.160311-1-xuemingl@mellanox.com>
17/04/2018 16:47, Xueming Li:
> This patch introduce new TX offload flags for device that supports
> IP or UDP tunneled packet L3/L4 checksum and TSO offload.
>
> The support from the device is for inner and outer checksums on
> IPV4/TCP/UDP and TSO for *any packet with the following format*:
>
> <some headers> / [optional IPv4/IPv6] / [optional TCP/UDP] / <some
> headers> / [optional inner IPv4/IPv6] / [optional TCP/UDP]
>
> For example the following packets can use this feature:
>
> 1. eth / ipv4 / udp / VXLAN / ip / tcp
> 2. eth / ipv4 / GRE / MPLS / ipv4 / udp
>
> Please note that tunnel headers that contain payload length, sequence id
> or checksum will not be updated.
[...]
> +/**< Device supports UDP tunneled packet TSO */
> +#define DEV_TX_OFFLOAD_UDP_TNL_TSO 0x00040000
> +/**< Device supports IP based tunnel packet TSO */
> +#define DEV_TX_OFFLOAD_IP_TNL_TSO 0x00080000
These doxygen comments are related to the constants on the next line.
So the syntax is /** not /**<
[...]
General comment: API description is required for application writers
and PMD developers. You need to provide details about what the offload
is expected to do.
> +/**
> + * Generic IP encapsulated tunnel type, used for TSO offload instead
> + * of defining new tunnel types.
The words "instead of defining new tunnel types" are justifications for
the commit message, not for the code itself.
> This feature relies on offloading
> + * DEV_TX_OFFLOAD_IP_TNL_TSO present.
I think you want to say that DEV_TX_OFFLOAD_IP_TNL_TSO must be enabled.
> + * Tunnel header that contains payload length, sequence id or checksum
> + * is not expected to be updated.
OK
So what is updated by this offload exactly?
inner and outer checksums on IPV4/TCP/UDP? What else?
No IPv6? No SCTP?
> + */
> +#define PKT_TX_TUNNEL_IP (0xDULL << 45)
> +/**
> + * Generic UDP encapsulated tunnel type, used for TSO offload instead
> + * of defining new tunnel types. This feature relies on offloading
> + * DEV_TX_OFFLOAD_UDP_TNL_TSO present.
> + * Tunnel header that contains payload length, sequence id or checksum
> + * is not expected to be updated.
> + */
Same comments as for PKT_TX_TUNNEL_IP.
> +#define PKT_TX_TUNNEL_UDP (0xEULL << 45)
next prev parent reply other threads:[~2018-04-17 21:21 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-09 14:11 [dpdk-dev] [PATCH 0/6] Support generic tunnel TX csum " Xueming Li
2018-01-09 14:11 ` [dpdk-dev] [PATCH 1/6] net/mlx5: support tx swp tunnel offloading Xueming Li
2018-01-29 15:08 ` [dpdk-dev] [PATCH v2 1/5] ethdev: introduce Tx generic tunnel offloads Xueming Li
2018-01-29 16:49 ` Ananyev, Konstantin
2018-01-30 3:01 ` Xueming(Steven) Li
2018-01-30 13:28 ` Ananyev, Konstantin
2018-01-30 15:27 ` Xueming(Steven) Li
2018-01-30 15:33 ` Ananyev, Konstantin
2018-01-30 15:47 ` Xueming(Steven) Li
2018-01-30 16:02 ` Ananyev, Konstantin
2018-01-30 16:10 ` Xueming(Steven) Li
2018-01-30 17:04 ` Ananyev, Konstantin
2018-01-30 17:54 ` Xueming(Steven) Li
2018-01-30 20:21 ` Thomas Monjalon
2018-01-31 15:20 ` Xueming(Steven) Li
2018-01-31 15:17 ` Xueming(Steven) Li
2018-01-29 15:08 ` [dpdk-dev] [PATCH v2 2/5] app/testpmd: testpmd support " Xueming Li
2018-01-29 15:08 ` [dpdk-dev] [PATCH v2 3/5] net/mlx5: separate TSO function in Tx data path Xueming Li
2018-01-29 15:08 ` [dpdk-dev] [PATCH v2 4/5] net/mlx5: support generic tunnel offloading Xueming Li
2018-01-29 15:08 ` [dpdk-dev] [PATCH v2 5/5] net/mlx5: allow max 192B TSO inline header length Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 0/7] support generic tunnel Tx checksum and TSO Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 1/7] ethdev: introduce Tx generic tunnel L3/L4 offload Xueming Li
2018-03-21 1:40 ` Yongseok Koh
2018-03-22 13:55 ` Xueming(Steven) Li
2018-03-28 12:52 ` Olivier Matz
2018-04-04 8:20 ` Xueming(Steven) Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 2/7] app/testpmd: testpmd support Tx generic tunnel offloads Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 3/7] app/testpmd: add more GRE extension to csum engine Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 4/7] app/testpmd: introduce VXLAN GPE to csum forwarding engine Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 5/7] net/mlx5: separate TSO function in Tx data path Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 6/7] net/mlx5: support generic tunnel offloading Xueming Li
2018-03-05 14:51 ` [dpdk-dev] [PATCH v3 7/7] net/mlx5: allow max 192B TSO inline header length Xueming Li
2018-04-08 12:32 ` [dpdk-dev] [PATCH v4 0/4] support Tx generic tunnel checksum and TSO Xueming Li
2018-04-17 14:43 ` [dpdk-dev] [PATCH v5 0/2] " Xueming Li
2018-04-17 14:47 ` [dpdk-dev] [PATCH v5 1/2] ethdev: introduce generic IP/UDP " Xueming Li
2018-04-17 21:21 ` Thomas Monjalon [this message]
2018-04-17 14:49 ` [dpdk-dev] [PATCH v5 2/2] app/testpmd: testpmd support Tx generic tunnel offloads Xueming Li
2018-04-18 13:38 ` [dpdk-dev] [PATCH v6 0/2] support Tx generic tunnel checksum and TSO Xueming Li
2018-04-18 13:58 ` [dpdk-dev] [PATCH v6 1/2] ethdev: introduce generic IP/UDP " Xueming Li
2018-04-18 14:28 ` Thomas Monjalon
2018-04-18 16:45 ` Ananyev, Konstantin
2018-04-18 18:02 ` Thomas Monjalon
2018-04-23 9:55 ` Olivier Matz
2018-04-20 12:48 ` [dpdk-dev] [PATCH v7 0/2] support Tx generic " Xueming Li
2018-04-23 11:36 ` [dpdk-dev] [PATCH v8 " Xueming Li
2018-04-23 16:17 ` Ferruh Yigit
2018-04-23 11:36 ` [dpdk-dev] [PATCH v8 1/2] ethdev: introduce generic IP/UDP " Xueming Li
2018-04-23 11:49 ` Xueming Li
2018-04-23 11:36 ` [dpdk-dev] [PATCH v8 2/2] app/testpmd: testpmd support Tx generic tunnel offloads Xueming Li
2018-04-20 12:48 ` [dpdk-dev] [PATCH v7 1/2] ethdev: introduce generic IP/UDP tunnel checksum and TSO Xueming Li
2018-04-23 9:59 ` Olivier Matz
2018-04-20 12:48 ` [dpdk-dev] [PATCH v7 2/2] app/testpmd: testpmd support Tx generic tunnel offloads Xueming Li
2018-04-18 13:59 ` [dpdk-dev] [PATCH v6 " Xueming Li
2018-04-08 12:32 ` [dpdk-dev] [PATCH v4 1/4] ethdev: introduce generic IP/UDP tunnel checksum and TSO Xueming Li
2018-04-16 22:42 ` Thomas Monjalon
2018-04-17 7:53 ` Xueming(Steven) Li
2018-04-17 8:10 ` Thomas Monjalon
2018-04-08 12:32 ` [dpdk-dev] [PATCH v4 2/4] app/testpmd: testpmd support Tx generic tunnel offloads Xueming Li
2018-04-17 14:24 ` Iremonger, Bernard
2018-04-17 15:44 ` Xueming(Steven) Li
2018-04-08 12:32 ` [dpdk-dev] [PATCH v4 3/4] app/testpmd: add more GRE extension to csum engine Xueming Li
2018-04-16 22:45 ` Thomas Monjalon
2018-04-17 5:19 ` Xueming(Steven) Li
2018-04-08 12:32 ` [dpdk-dev] [PATCH v4 4/4] app/testpmd: introduce VXLAN GPE to csum forwarding engine Xueming Li
2018-04-16 22:46 ` Thomas Monjalon
2018-04-17 13:56 ` Iremonger, Bernard
2018-04-17 14:12 ` Xueming(Steven) Li
2018-01-09 14:11 ` [dpdk-dev] [PATCH 2/6] net/mlx5: allow max 192B WQE TSO inline header length Xueming Li
2018-01-09 14:11 ` [dpdk-dev] [PATCH 3/6] net/mlx5: add SWP PCI parameter for TX common tunnel offloads Xueming Li
2018-01-09 14:11 ` [dpdk-dev] [PATCH 4/6] ethdev: introduce " Xueming Li
2018-01-11 18:38 ` Ferruh Yigit
2018-01-16 17:10 ` Olivier Matz
2018-01-16 17:28 ` Xueming(Steven) Li
2018-01-16 19:06 ` Shahaf Shuler
2018-01-22 12:46 ` Olivier Matz
2018-01-22 20:06 ` Shahaf Shuler
2018-01-17 0:50 ` Yongseok Koh
2018-01-09 14:11 ` [dpdk-dev] [PATCH 5/6] net/mlx5: support " Xueming Li
2018-01-09 14:11 ` [dpdk-dev] [PATCH 6/6] app/testpmd: testpmd " Xueming Li
2018-01-16 3:09 ` Lu, Wenzhuo
2018-04-09 12:10 [dpdk-dev] [PATCH v1 1/2] ethdev: add supported hash function check Xueming Li
2018-04-20 13:06 ` [dpdk-dev] [PATCH v5 1/2] ethdev: introduce generic IP/UDP tunnel checksum and TSO Xueming Li
2018-04-20 13:48 ` Ferruh Yigit
2018-04-20 14:23 ` Ferruh Yigit
2018-04-20 14:23 ` Xueming(Steven) Li
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