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From: Jijiang Liu <jijiang.liu@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v3 0/3] enhance TX checksum command and csum forwarding engine
Date: Wed, 10 Dec 2014 09:03:20 +0800
Message-ID: <1418173403-30202-1-git-send-email-jijiang.liu@intel.com> (raw)

In the current codes, the "tx_checksum set (ip|udp|tcp|sctp|vxlan) (hw|sw) (port-id)" command is not easy to understand and extend, so the patch set enhances the tx_checksum command and reworks csum forwarding engine due to the change of tx_checksum command. 
The main changes of the tx_checksum command are listed below,

1> add "tx_checksum set tunnel (hw|sw|none) (port-id)" command

The command is used to set/clear tunnel flag that is used to tell the NIC that the packetg is a tunneing packet and application want hardware TX checksum offload for outer layer, or inner layer, or both.

The 'none' option means that user treat tunneling packet as ordinary packet when using the csum forward engine.
for example, let say we have a tunnel packet: eth_hdr_out/ipv4_hdr_out/udp_hdr_out/vxlan_hdr/ehtr_hdr_in/ipv4_hdr_in/tcp_hdr_in. one of several scenarios:

1) User requests HW offload for ipv4_hdr_out  checksum, and doesn't care is it a tunnelled packet or not. So he sets:

tx_checksum set tunnel none 0

tx_checksum set ip hw 0

So for such case we should set tx_tunnel to 'none'.

2> add "tx_checksum set outer-ip (hw|sw) (port-id)" command

The command is used to set/clear outer IP flag that is used to tell the NIC that application want hardware offload for outer layer.

3> remove the 'vxlan' option from the  "tx_checksum set (ip|udp|tcp|sctp|vxlan) (hw|sw) (port-id)" command

The command is used to set IP, UDP, TCP and SCTP TX checksum flag. In the case of tunneling packet, the IP, UDP, TCP and SCTP flags always concern inner layer.
 
Moreover, replace the TESTPMD_TX_OFFLOAD_VXLAN_CKSUM flag with TESTPMD_TX_OFFLOAD_TUNNEL_CKSUM flag and add the TESTPMD_TX_OFFLOAD_OUTER_IP_CKSUM and TESTPMD_TX_OFFLOAD_NON_TUNNEL_CKSUM flag in test-pmd application.

v2 change:
     redefine the 'none' behaviour for "tx_checksum set tunnel (hw|sw|none) (port-id)" command.
v3 change:
     typo correction in cmdline help 

Jijiang Liu (3):
  add outer IP offload capability in librte_ether.
  add outer IP checksum capability in i40e PMD
  testpmd command lines of the tx_checksum and csum forwarding rework

 app/test-pmd/cmdline.c            |  201 +++++++++++++++++++++++++++++++++++--
 app/test-pmd/csumonly.c           |   35 ++++---
 app/test-pmd/testpmd.h            |    6 +-
 lib/librte_ether/rte_ethdev.h     |    1 +
 lib/librte_pmd_i40e/i40e_ethdev.c |    3 +-
 5 files changed, 218 insertions(+), 28 deletions(-)

-- 
1.7.7.6

             reply	other threads:[~2014-12-10  1:03 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-10  1:03 Jijiang Liu [this message]
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 1/3] librte_ether:add outer IP offload capability flag Jijiang Liu
2014-12-11 10:33   ` Olivier MATZ
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 2/3] i40e:support outer IPv4 checksum capability Jijiang Liu
2014-12-11 10:34   ` Olivier MATZ
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 3/3] app/testpmd:change tx_checksum command and csum forwarding engine Jijiang Liu
2014-12-11 10:52   ` Olivier MATZ
2014-12-12  4:06     ` Liu, Jijiang
2014-12-11 10:17 ` [dpdk-dev] [PATCH v3 0/3] enhance TX checksum " Olivier MATZ
2014-12-12  3:48   ` Liu, Jijiang
2014-12-12 16:33     ` Olivier MATZ
2015-01-07  2:03       ` Liu, Jijiang
2015-01-07  9:59         ` Ananyev, Konstantin
2015-01-07 11:39           ` Liu, Jijiang
2015-01-07 12:07             ` Ananyev, Konstantin
2015-01-08  8:51               ` Liu, Jijiang
2015-01-08 10:54                 ` Ananyev, Konstantin
2015-01-09 10:45                   ` Olivier MATZ
2015-01-12  3:41                     ` Liu, Jijiang
2015-01-12 11:43                       ` Olivier MATZ
2015-01-13  3:04                         ` Liu, Jijiang
2015-01-13  9:55                           ` Olivier MATZ
2015-01-14  3:01                             ` Liu, Jijiang
2015-01-15 13:31                               ` Ananyev, Konstantin
2015-01-16 17:27                                 ` Olivier MATZ
2015-01-19 13:04                                   ` Ananyev, Konstantin
2015-01-19 14:38                                     ` Olivier MATZ
2015-01-20  1:12                                       ` Ananyev, Konstantin
2015-01-20 12:39                                         ` Olivier MATZ
2015-01-20 15:18                                           ` Thomas Monjalon
2015-01-20 17:10                                             ` Stephen Hemminger
2015-01-20 17:23                                           ` Ananyev, Konstantin
2015-01-20 18:15                                             ` Olivier MATZ
2015-01-21  3:12                                               ` Liu, Jijiang
2015-01-21 15:25                                                 ` Olivier MATZ
2015-01-21 16:28                                                   ` Ananyev, Konstantin
2015-01-21 17:13                                                     ` Olivier MATZ
2015-01-26  4:13                                                   ` Ananyev, Konstantin
2015-01-26  6:02                                                     ` Liu, Jijiang
2015-01-26 14:07                                                       ` Olivier MATZ
2015-01-26 14:15                                                         ` Ananyev, Konstantin
2015-01-27  8:34                                                           ` Olivier MATZ
2015-01-27 15:26                                                             ` Ananyev, Konstantin
2015-01-21 19:44                                                 ` Stephen Hemminger
2015-01-22  1:40                                                   ` Liu, Jijiang
2015-01-21  8:01                                               ` Liu, Jijiang
2015-01-21  9:10                                                 ` Olivier MATZ
2015-01-21 11:52                                                   ` Ananyev, Konstantin
2015-01-07 13:06 ` Qiu, Michael

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