From: Remy Horton <remy.horton@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2 2/2] doc: User-space ethtool sample application
Date: Mon, 26 Oct 2015 15:59:21 +0000 [thread overview]
Message-ID: <1445875161-1808-3-git-send-email-remy.horton@intel.com> (raw)
In-Reply-To: <1445875161-1808-1-git-send-email-remy.horton@intel.com>
Signed-off-by: Remy Horton <remy.horton@intel.com>
---
doc/guides/sample_app_ug/ethtool.rst | 265 +++++++++++++++++++++++++++++++++++
doc/guides/sample_app_ug/index.rst | 1 +
2 files changed, 266 insertions(+)
create mode 100644 doc/guides/sample_app_ug/ethtool.rst
diff --git a/doc/guides/sample_app_ug/ethtool.rst b/doc/guides/sample_app_ug/ethtool.rst
new file mode 100644
index 0000000..6d71908
--- /dev/null
+++ b/doc/guides/sample_app_ug/ethtool.rst
@@ -0,0 +1,265 @@
+
+.. BSD LICENSE
+ Copyright(c) 2015 Intel Corporation. All rights reserved.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+EthTool Sample Application
+==========================
+
+The Ethtool sample application shows an implementation of an
+EthTool-like API and provides a console environment that allows
+its use to query and change Ethernet card parameters. The sample
+is based upon a simple L2 frame reflector.
+
+
+Compiling the Application
+-------------------------
+
+To compile the application:
+
+#. Go to the sample application directory:
+
+ .. code-block:: console
+
+ export RTE_SDK=/path/to/rte_sdk cd ${RTE_SD}/examples/ethtool
+
+#. Set the target (a default target is used if not specified). For example:
+
+ .. code-block:: console
+
+ export RTE_TARGET=x86_64-native-linuxapp-gcc
+
+ See the *DPDK Getting Started Guide* for possible RTE_TARGET values.
+
+#. Build the application:
+
+ .. code-block:: console
+
+ make
+
+Running the Application
+-----------------------
+
+The application requires an available core for each port, plus one.
+The only available options are the standard ones for the EAL:
+
+.. code-block:: console
+
+ ./build/ethtool [EAL options]
+
+Refer to the *DPDK Getting Started Guide* for general information on
+running applications and the Environment Abstraction Layer (EAL)
+options.
+
+Using the application
+---------------------
+
+The application is console-driven using the cmdline DPDK interface:
+
+.. code-block:: console
+
+ EthApp>
+
+From this interface the available commands and descriptions of what
+they do as as follows:
+
+drvinfo
+ Print driver info
+eeprom
+ Dump EEPROM to file
+link
+ Print port link states
+macaddr
+ Gets/sets MAC address
+mtu
+ Set NIC MTU
+open
+ Open port
+pause
+ Get/set port pause state
+portstats
+ Print port statistics
+regs
+ Dump port register(s) to file
+ringparam
+ Get/set ring parameters
+rxmode
+ Toggle port Rx mode
+stop
+ Stop port
+validate
+ Check that given MAC address is valid unicast address
+vlan
+ Add/remove VLAN id
+quit
+ Exit program
+
+
+Explaination
+------------
+
+The following sections describe the most important parts of the code.
+
+
+Base program
+~~~~~~~~~~~~
+
+The top-level, after some port initialisation routines, runs the following:
+
+.. code-block:: c
+
+ for (idx_port = 0; idx_port < cnt_ports; idx_port++) {
+ ptr_port = &app_cfg.ports[idx_port];
+ rte_eal_remote_launch(slave_main, ptr_port, idx_port + 1);
+ }
+
+ ethapp_main();
+
+Each slave core, or a subset of these cores if there are more cores then
+NIC ports, runs the `slave core process`_ described below. The master core
+then runs the `EthTool App`_ itself.
+
+
+Slave core process
+~~~~~~~~~~~~~~~~~~
+
+Each slave core is assigned one of the available ports, and runs
+the following code that implements a simple MAC frame refector:
+
+.. code-block:: c
+
+ while (!ptr_port->exit_now) {
+ rte_spinlock_lock(&ptr_port->lock);
+ if (ptr_port->port_active == 0 ) {
+ rte_spinlock_unlock(&ptr_port->lock);
+ continue;
+ }
+
+ /* Incoming frames */
+ cnt_backlog_frames = ptr_txq->cnt_frames;
+ cnt_recv_frames = rte_eth_rx_burst(
+ ptr_port->idx_port, 0,
+ &buf_recv_frames[ptr_txq->cnt_frames],
+ MAX_BURST_LENGTH - cnt_backlog_frames
+ );
+ if (cnt_recv_frames > 0) {
+ for (idx_frame = 0;
+ idx_frame < cnt_recv_frames;
+ idx_frame++) {
+ ptr_frame = buf_recv_frames[
+ idx_frame + cnt_backlog_frames];
+ process_frame(ptr_port, ptr_frame);
+ }
+ }
+
+ /* Outgoing frames */
+ if (ptr_txq->cnt_frames > 0) {
+ cnt_sent = rte_eth_tx_burst(
+ ptr_port->idx_port, 0,
+ ptr_txq->ptr_frames,
+ ptr_txq->cnt_frames
+ );
+ /* Shuffle up unsent frame pointers */
+ for (idx_frame = cnt_sent;
+ idx_frame < ptr_txq->cnt_frames;
+ idx_frame++)
+ ptr_txq->ptr_frames[idx_frame - cnt_sent] =
+ ptr_txq->ptr_frames[idx_frame];
+ ptr_txq->cnt_frames -= cnt_sent;
+ }
+ rte_spinlock_unlock(&ptr_port->lock);
+
+ } /* end for(;;) */
+
+There is a check to make sure the port is in an active state. A burst
+of frames is read and each frame within this burst is processed as
+described below. Outgoing frames are then dispatched as a single burst,
+with unsent frames being shuffled to the front of the outgoing queue if
+not all of the frames could be sent.
+
+The processing of individial frames consists of setting the destination
+address to be the source address, setting the source address to be the
+MAC address of the port being handled, and then queueing the frame for
+transmission:
+
+.. code-block:: c
+
+ ptr_mac_hdr = rte_pktmbuf_mtod(ptr_frame, struct ether_hdr *);
+ ether_addr_copy(&ptr_mac_hdr->s_addr, &ptr_mac_hdr->d_addr);
+ rte_eth_macaddr_get(ptr_port->idx_port, &ptr_mac_hdr->s_addr);
+ ptr_port->tx_queue.ptr_frames[ptr_port->tx_queue.cnt_frames++] =
+ ptr_frame;
+
+
+EthTool App
+~~~~~~~~~~~
+
+The ``foreground`` part of the EthTool sample is a console-based
+interface that accepts commands as described in `using the
+application`_.
+
+.. code-block:: c
+
+ ctx_cmdline = cmdline_stdin_new(list_prompt_commands, "EthApp> ");
+ cmdline_interact(ctx_cmdline);
+ cmdline_stdin_exit(ctx_cmdline);
+
+
+Individual call-back functions handle the detail associated with each
+command, which make use of the functions defined in the `EthTool interface`_
+to the DPDK functions.
+
+
+EthTool interface
+~~~~~~~~~~~~~~~~~
+
+The EthTool interface is built as a separate library, and implements
+the following functions:
+
+- rte_ethtool_get_drvinfo
+- rte_ethtool_get_regs_len
+- rte_ethtool_get_regs
+- rte_ethtool_get_link
+- rte_ethtool_get_eeprom_len
+- rte_ethtool_get_eeprom
+- rte_ethtool_set_eeprom
+- rte_ethtool_get_pauseparam
+- rte_ethtool_set_pauseparam
+- rte_ethtool_net_open
+- rte_ethtool_net_stop
+- rte_ethtool_net_get_mac_addr
+- rte_ethtool_net_set_mac_addr
+- rte_ethtool_net_validate_addr
+- rte_ethtool_net_change_mtu
+- rte_ethtool_net_get_stats64
+- rte_ethtool_net_vlan_rx_add_vid
+- rte_ethtool_net_vlan_rx_kill_vid
+- rte_ethtool_net_set_rx_mode
+- rte_ethtool_get_ringparam
+- rte_ethtool_set_ringparam
diff --git a/doc/guides/sample_app_ug/index.rst b/doc/guides/sample_app_ug/index.rst
index 9beedd9..086d3f2 100644
--- a/doc/guides/sample_app_ug/index.rst
+++ b/doc/guides/sample_app_ug/index.rst
@@ -41,6 +41,7 @@ Sample Applications User Guide
intro
cmd_line
+ ethtool
exception_path
hello_world
skeleton
--
1.9.3
next prev parent reply other threads:[~2015-10-26 15:59 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1443593929-1804-1-git-send-email-remy.horton@intel.com>
2015-09-30 6:18 ` [dpdk-dev] [PATCH v1 1/2] l2fwd: Fix coding standard errors Remy Horton
2015-09-30 6:18 ` [dpdk-dev] [PATCH v1 2/2] User-space ethtool sample application Remy Horton
2015-10-26 15:59 ` [dpdk-dev] [PATCH v2 0/2] " Remy Horton
2015-10-26 15:59 ` [dpdk-dev] [PATCH v2 1/2] example: " Remy Horton
2015-10-26 15:59 ` Remy Horton [this message]
2015-10-28 11:12 ` [dpdk-dev] [PATCH v3 0/2] " Remy Horton
2015-10-28 11:12 ` [dpdk-dev] [PATCH v3 1/2] example: add user-space " Remy Horton
2015-10-28 11:12 ` [dpdk-dev] [PATCH v3 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-10-28 13:52 ` [dpdk-dev] [PATCH v3 0/2] User-space ethtool sample application Ananyev, Konstantin
2015-10-29 12:11 ` [dpdk-dev] [PATCH v4 " Remy Horton
2015-10-29 12:11 ` [dpdk-dev] [PATCH v4 1/2] example: add user-space " Remy Horton
2015-10-29 12:11 ` [dpdk-dev] [PATCH v4 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-10-29 14:14 ` [dpdk-dev] [PATCH v5 0/2] User-space ethtool sample application Remy Horton
2015-10-29 14:14 ` [dpdk-dev] [PATCH v5 1/2] example: add user-space " Remy Horton
2015-10-29 14:14 ` [dpdk-dev] [PATCH v5 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-10-29 14:19 ` [dpdk-dev] [PATCH v5 0/2] User-space ethtool sample application Ananyev, Konstantin
2015-11-06 16:11 ` [dpdk-dev] [PATCH v6 " Remy Horton
2015-11-06 16:11 ` [dpdk-dev] [PATCH v6 1/2] example: add user-space " Remy Horton
2015-11-06 16:11 ` [dpdk-dev] [PATCH v6 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-11-13 16:52 ` Mcnamara, John
2015-11-16 10:56 ` Remy Horton
2015-11-06 16:38 ` [dpdk-dev] [PATCH v6 0/2] User-space ethtool sample application Ananyev, Konstantin
2015-11-16 13:30 ` [dpdk-dev] [PATCH v7 " Remy Horton
2015-11-16 13:30 ` [dpdk-dev] [PATCH v7 1/2] example: add user-space " Remy Horton
2015-11-16 13:30 ` [dpdk-dev] [PATCH v7 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-11-16 13:42 ` [dpdk-dev] [PATCH v8 0/2] User-space ethtool sample application Remy Horton
2015-11-16 13:42 ` [dpdk-dev] [PATCH v8 1/2] example: add user-space " Remy Horton
2015-11-16 13:42 ` [dpdk-dev] [PATCH v8 2/2] doc: add user-space ethtool sample app guide Remy Horton
2015-11-16 14:16 ` Mcnamara, John
2015-11-16 13:50 ` [dpdk-dev] [PATCH v8 0/2] User-space ethtool sample application Thomas Monjalon
2015-11-20 15:34 ` [dpdk-dev] [PATCH v9 0/3] " Remy Horton
2015-11-20 15:34 ` [dpdk-dev] [PATCH v9 1/3] Remove ABI requirement for external library builds Remy Horton
[not found] ` <2601191342CEEE43887BDE71AB97725836ACAB5A@irsmsx105.ger.corp.intel.com>
2015-11-20 16:32 ` Wang, Liang-min
2015-11-20 15:34 ` [dpdk-dev] [PATCH v9 2/3] example: add user-space ethtool sample application Remy Horton
2015-11-20 17:15 ` Ananyev, Konstantin
2015-12-07 2:29 ` Thomas Monjalon
2015-12-07 11:54 ` Remy Horton
2015-11-20 15:34 ` [dpdk-dev] [PATCH v9 3/3] doc: add user-space ethtool sample app guide Remy Horton
2015-11-20 17:16 ` Ananyev, Konstantin
2015-12-01 12:05 ` Mcnamara, John
2015-11-24 3:05 ` [dpdk-dev] [PATCH v9 0/3] User-space ethtool sample application Liu, Yong
2015-12-07 13:48 ` [dpdk-dev] [PATCH v10 0/4] " Remy Horton
2015-12-07 13:48 ` [dpdk-dev] [PATCH v10 1/4] Remove ABI requirement for external library builds Remy Horton
2015-12-07 13:48 ` [dpdk-dev] [PATCH v10 2/4] mk: Fix missing directory with combined extlib build Remy Horton
2015-12-08 0:49 ` Thomas Monjalon
2015-12-07 13:48 ` [dpdk-dev] [PATCH v10 3/4] example: add user-space ethtool sample application Remy Horton
2015-12-07 13:49 ` [dpdk-dev] [PATCH v10 4/4] doc: add user-space ethtool sample app guide Remy Horton
2015-12-08 0:30 ` Thomas Monjalon
2015-12-08 0:33 ` [dpdk-dev] [PATCH v10 0/4] User-space ethtool sample application Thomas Monjalon
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