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From: John McNamara <john.mcnamara@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2 0/4] DPDK ethdev callback support
Date: Fri, 13 Feb 2015 15:39:45 +0000	[thread overview]
Message-ID: <1423841989-9090-1-git-send-email-john.mcnamara@intel.com> (raw)
In-Reply-To: <1419266844-4848-1-git-send-email-bruce.richardson@intel.com>

This patchset is for a small addition to the ethdev library, to
add in support for callbacks at the RX and TX stages. This allows
packet processing to be done on packets before they get returned
to applications using rte_eth_rx_burst call.

See the RFC cover letter for the use cases:

    http://dpdk.org/ml/archives/dev/2014-December/010491.html

For the post-RFC version we spent some time investigating Stephen Hemminger's
suggestion of using the userspace RCU (read-copy-update) library for
SMP safety:

   http://urcu.so/

The default liburcu (which defaulted to liburcu-mb) requires the least
interaction from the end user but showed a 25% drop in packet throughput
in the callback sample app.

The liburcu-qsbr (quiescent state) variant showed a 1% drop in packet
throughput in the callback sample app. However it requires registered
RCU threads in the program to periodically announce quiescent states.
This makes it more difficult to implement for end user applications.

For this release we will document that adding and removing callbacks
is not thread safe.

Note: Sample application documentation to follow in a patch update.

Version 2 changes:
    * Added ABI versioning.
    * Doxygen clarifications.

Version 1 changes:
    * Added callback removal functions.
    * Minor fixes.


John McNamara (1):
  abi: Added rxtx callback functions to ABI versioning

Richardson, Bruce (3):
  ethdev: rename callbacks field to intr_cbs
  ethdev: Add in data rxtx callback support
  examples: example showing use of callbacks.

 app/test/virtual_pmd.c                 |    2 +-
 examples/rxtx_callbacks/Makefile       |   57 ++++++++
 examples/rxtx_callbacks/basicfwd.c     |  222 ++++++++++++++++++++++++++++++++
 examples/rxtx_callbacks/basicfwd.h     |   46 +++++++
 lib/librte_ether/rte_ethdev.c          |  175 ++++++++++++++++++++++++--
 lib/librte_ether/rte_ethdev.h          |  191 +++++++++++++++++++++++++++-
 lib/librte_ether/rte_ether_version.map |    4 +
 lib/librte_pmd_bond/rte_eth_bond_api.c |    2 +-
 8 files changed, 685 insertions(+), 14 deletions(-)
 create mode 100644 examples/rxtx_callbacks/Makefile
 create mode 100644 examples/rxtx_callbacks/basicfwd.c
 create mode 100644 examples/rxtx_callbacks/basicfwd.h

-- 
1.7.4.1

  parent reply	other threads:[~2015-02-13 15:40 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-22 16:47 [dpdk-dev] [PATCH RFC 0/3] " Bruce Richardson
2014-12-22 16:47 ` [dpdk-dev] [PATCH RFC 1/3] ethdev: rename callbacks field to intr_cbs Bruce Richardson
2014-12-22 16:47 ` [dpdk-dev] [PATCH RFC 2/3] ethdev: Add in data rxtx callback support Bruce Richardson
2014-12-22 16:47 ` [dpdk-dev] [PATCH RFC 3/3] examples: example showing use of callbacks Bruce Richardson
2014-12-22 17:02 ` [dpdk-dev] [PATCH RFC 0/3] DPDK ethdev callback support Thomas Monjalon
2014-12-22 17:33   ` Bruce Richardson
2014-12-22 17:47     ` Neil Horman
2014-12-23  9:28       ` Bruce Richardson
2014-12-23 13:09         ` Neil Horman
2014-12-23 14:09           ` Bruce Richardson
2015-01-05 16:17     ` Bruce Richardson
2014-12-22 18:31 ` Stephen Hemminger
2014-12-23  9:29   ` Bruce Richardson
2014-12-23  4:23 ` Vithal S Mohare
2014-12-23  9:30   ` Bruce Richardson
2014-12-23  9:37     ` Vithal S Mohare
2014-12-24  1:43       ` Zhang, Helin
2014-12-24  5:06 ` Qiu, Michael
2015-02-12 19:57 ` [dpdk-dev] [PATCH " John McNamara
2015-02-12 19:57   ` [dpdk-dev] [PATCH 1/3] ethdev: rename callbacks field to intr_cbs John McNamara
2015-02-12 19:57   ` [dpdk-dev] [PATCH 2/3] ethdev: Add in data rxtx callback support John McNamara
2015-02-12 21:12     ` Neil Horman
2015-02-12 19:57   ` [dpdk-dev] [PATCH 3/3] examples: example showing use of callbacks John McNamara
2015-02-13 14:54   ` [dpdk-dev] [PATCH 0/3] DPDK ethdev callback support Declan Doherty
2015-02-13 15:39 ` John McNamara [this message]
2015-02-13 15:39   ` [dpdk-dev] [PATCH v2 1/4] ethdev: rename callbacks field to intr_cbs John McNamara
2015-02-13 16:06     ` Thomas Monjalon
2015-02-13 16:52       ` Thomas Monjalon
2015-02-13 15:39   ` [dpdk-dev] [PATCH v2 2/4] ethdev: Add in data rxtx callback support John McNamara
2015-02-13 16:33     ` Thomas Monjalon
2015-02-13 17:49       ` Bruce Richardson
2015-02-13 15:39   ` [dpdk-dev] [PATCH v2 3/4] examples: example showing use of callbacks John McNamara
2015-02-13 16:02     ` Thomas Monjalon
2015-02-16 14:33     ` Olivier MATZ
2015-02-16 15:16       ` Bruce Richardson
2015-02-16 17:34         ` Thomas Monjalon
2015-02-17 12:17           ` Declan Doherty
2015-02-17 12:25           ` Bruce Richardson
2015-02-17 13:28             ` Olivier MATZ
2015-02-17 13:50               ` Bruce Richardson
2015-02-17 15:49                 ` Neil Horman
2015-02-17 16:00                   ` Bruce Richardson
2015-02-17 16:08                     ` Neil Horman
2015-02-17 16:15                       ` Bruce Richardson
2015-02-17 19:27                         ` Neil Horman
2015-02-17 15:32             ` Thomas Monjalon
2015-02-17 15:58               ` Bruce Richardson
2015-02-13 15:39   ` [dpdk-dev] [PATCH v2 4/4] abi: Added rxtx callback functions to ABI versioning John McNamara
2015-02-13 15:59     ` Thomas Monjalon
2015-02-13 15:48   ` [dpdk-dev] [PATCH v2 0/4] DPDK ethdev callback support Declan Doherty
2015-02-18 17:42 ` [dpdk-dev] [PATCH v3 0/3] " John McNamara
2015-02-18 17:42   ` [dpdk-dev] [PATCH v3 1/3] ethdev: Rename callbacks field to link_intr_cbs John McNamara
2015-02-18 17:42   ` [dpdk-dev] [PATCH v3 2/3] ethdev: Add rxtx callback support John McNamara
2015-02-18 18:19     ` Thomas Monjalon
2015-02-19  9:33       ` Mcnamara, John
2015-02-18 17:42   ` [dpdk-dev] [PATCH v3 3/3] examples: example showing use of callbacks John McNamara
2015-02-19 17:56   ` [dpdk-dev] [PATCH v4 0/3] DPDK ethdev callback support John McNamara
2015-02-19 17:56     ` [dpdk-dev] [PATCH v4 1/3] ethdev: rename callbacks field to link_intr_cbs John McNamara
2015-02-19 17:56     ` [dpdk-dev] [PATCH v4 2/3] ethdev: add optional rxtx callback support John McNamara
2015-02-20 10:06       ` Bruce Richardson
2015-02-20 10:31         ` Thomas Monjalon
2015-02-19 17:56     ` [dpdk-dev] [PATCH v4 3/3] examples: example showing use of callbacks John McNamara
2015-02-20 17:03   ` [dpdk-dev] [PATCH v5 0/3] DPDK ethdev callback support John McNamara
2015-02-20 17:03     ` [dpdk-dev] [PATCH v5 1/3] ethdev: rename callbacks field to link_intr_cbs John McNamara
2015-02-20 17:03     ` [dpdk-dev] [PATCH v5 2/3] ethdev: add optional rxtx callback support John McNamara
2015-02-23 15:11       ` Thomas Monjalon
2015-02-23 17:27         ` Mcnamara, John
2015-02-20 17:03     ` [dpdk-dev] [PATCH v5 3/3] examples: example showing use of callbacks John McNamara
2015-02-23 18:30   ` [dpdk-dev] [PATCH v6 0/3] DPDK ethdev callback support John McNamara
2015-02-23 18:30     ` [dpdk-dev] [PATCH v6 1/3] ethdev: rename callbacks field to link_intr_cbs John McNamara
2015-02-23 18:30     ` [dpdk-dev] [PATCH v6 2/3] ethdev: add optional rxtx callback support John McNamara
2015-02-23 18:30     ` [dpdk-dev] [PATCH v6 3/3] examples: example showing use of callbacks John McNamara
2015-02-23 23:39     ` [dpdk-dev] [PATCH v6 0/3] DPDK ethdev callback support Thomas Monjalon

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