iee802154 loopback: Eliminate dependency on CONFIG_NET_LOOPBACK
This commit is contained in:
Gregory Nutt
parent
7c480747c0
commit
86dc312ae4
@ -37,4 +37,35 @@ config IEEE802154_DEV
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Enables a device driver to expose ieee802.15.4 radio controls
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to user space as IOCTLs.
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config IEEE802154_LOOPBACK
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bool "IEEE802154 6loWPAN Loopback"
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default n
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depends on NET_6LOWPAN && NET_IPv6
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select ARCH_HAVE_NETDEV_STATISTICS
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---help---
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Add support for the IEEE802154 6loWPAN Loopback test device.
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if IEEE802154_LOOPBACK
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choice
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prompt "Work queue"
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default IEEE802154_LOOPBACK_LPWORK if SCHED_LPWORK
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default IEEE802154_LOOPBACK_HPWORK if !SCHED_LPWORK && SCHED_HPWORK
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depends on SCHED_WORKQUEUE
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---help---
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Work queue support is required to use the loopback driver. If the
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low priority work queue is available, then it should be used by the
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loopback driver.
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config IEEE802154_LOOPBACK_HPWORK
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bool "High priority"
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depends on SCHED_HPWORK
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config IEEE802154_LOOPBACK_LPWORK
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bool "Low priority"
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depends on SCHED_LPWORK
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endchoice # Work queue
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endif # IEEE802154_LOOPBACK
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endif # IEEE802154
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@ -53,6 +53,10 @@ ifeq ($(CONFIG_IEEE802154_DEV),y)
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CSRCS += radio802154_device.c
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endif
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ifeq ($(CONFIG_IEEE802154_LOOPBACK),y)
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CSRCS += mac802154_loopback.c
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endif
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DEPPATH += --dep-path ieee802154
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VPATH += :ieee802154
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CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(TOPDIR)$(DELIM)wireless$(DELIM)ieee802154}
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585
wireless/ieee802154/mac802154_loopback.c
Normal file
585
wireless/ieee802154/mac802154_loopback.c
Normal file
@ -0,0 +1,585 @@
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/****************************************************************************
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* wireless/iee802154/mac802154_loopback.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <nuttx/wdog.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/ip.h>
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#include <nuttx/net/loopback.h>
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#ifndef CONFIG_NET_LOOPBACK
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# include <nuttx/net/sixlowpan.h>
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#endif
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#ifdef CONFIG_IEEE802154_LOOPBACK
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* We need to have the work queue to handle SPI interrupts */
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#if !defined(CONFIG_SCHED_WORKQUEUE)
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# error Worker thread support is required (CONFIG_SCHED_WORKQUEUE)
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#else
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# if defined(CONFIG_IEEE802154_LOOPBACK_HPWORK)
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# define LPBKWORK HPWORK
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# elif defined(CONFIG_IEEE802154_LOOPBACK_LPWORK)
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# define LPBKWORK LPWORK
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# else
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# error Neither CONFIG_IEEE802154_LOOPBACK_HPWORK nor CONFIG_IEEE802154_LOOPBACK_LPWORK defined
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# endif
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#endif
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/* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */
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#define LO_WDDELAY (1*CLK_TCK)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/* The lo_driver_s encapsulates all state information for a single hardware
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* interface
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*/
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struct lo_driver_s
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{
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bool lo_bifup; /* true:ifup false:ifdown */
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bool lo_txdone; /* One RX packet was looped back */
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WDOG_ID lo_polldog; /* TX poll timer */
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struct work_s lo_work; /* For deferring poll work to the work queue */
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/* This holds the information visible to the NuttX network */
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struct ieee802154_driver_s lo_ieee; /* Interface understood by the network */
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct lo_driver_s g_loopback;
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static uint8_t g_iobuffer[CONFIG_NET_6LOWPAN_MTU + CONFIG_NET_GUARDSIZE];
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#ifndef CONFIG_NET_LOOPBACK
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static const net_ipv6addr_t g_lo_ipv6addr =
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{
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HTONS(0), HTONS(0), HTONS(0), HTONS(0),
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HTONS(0), HTONS(0), HTONS(0), HTONS(1)
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};
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#endif
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* Polling logic */
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static int lo_txpoll(FAR struct net_driver_s *dev);
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static void lo_poll_work(FAR void *arg);
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static void lo_poll_expiry(int argc, wdparm_t arg, ...);
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/* NuttX callback functions */
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static int lo_ifup(FAR struct net_driver_s *dev);
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static int lo_ifdown(FAR struct net_driver_s *dev);
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static void lo_txavail_work(FAR void *arg);
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static int lo_txavail(FAR struct net_driver_s *dev);
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#if defined(CONFIG_NET_IGMP) || defined(CONFIG_NET_ICMPv6)
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static int lo_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac);
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#ifdef CONFIG_NET_IGMP
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static int lo_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac);
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#endif
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Function: lo_txpoll
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*
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* Description:
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* Check if the network has any outgoing packets ready to send. This is
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* a callback from devif_poll() or devif_timer(). devif_poll() will be
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* called only during normal TX polling.
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*
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* Parameters:
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* dev - Reference to the NuttX driver state structure
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*
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* Returned Value:
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* OK on success; a negated errno on failure
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*
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* Assumptions:
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* May or may not be called from an interrupt handler. In either case,
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* the network is locked.
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*
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****************************************************************************/
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static int lo_txpoll(FAR struct net_driver_s *dev)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private;
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FAR struct iob_s *head;
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FAR struct iob_s *tail;
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FAR struct iob_s *iob;
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int ret;
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/* Remove the queued IOBs from driver structure */
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head = priv->lo_ieee.i_framelist;
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/* Find the tail of the IOB queue */
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for (tail = NULL, iob = head;
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iob != NULL;
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tail = iob, iob = iob->io_flink);
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/* Loop while there frames to be sent, i.e., while the IOB list is not
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* emtpy. Sending, of course, just means relaying back through the network
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* for this driver.
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*/
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while (!FRAME_IOB_EMPTY(&priv->lo_ieee))
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{
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/* Remove the IOB from the queue */
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FRAME_IOB_REMOVE(&priv->lo_ieee, iob);
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/* Is the queue now empty? */
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if (FRAME_IOB_EMPTY(&priv->lo_ieee))
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{
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tail = NULL;
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}
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/* Return the next frame to the network */
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iob->io_flink = NULL;
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priv->lo_ieee.i_framelist = iob;
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ninfo("Send frame %p to the network. Length=%u\n", iob, iob->io_len);
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ret = sixlowpan_input(&priv->lo_ieee);
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if (ret < 0)
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{
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nerr("ERROR: sixlowpan_input returned %d\n", ret);
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}
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/* What if the network responds with more frames to send? */
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if (priv->lo_ieee.i_framelist != NULL)
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{
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/* Append the new list to the tail of the queue */
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iob = priv->lo_ieee.i_framelist;
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priv->lo_ieee.i_framelist = NULL;
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if (tail == NULL)
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{
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head = iob;
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}
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else
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{
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tail->io_flink = iob;
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}
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/* Find the new tail of the IOB queue */
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for (tail = iob, iob = iob->io_flink;
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iob != NULL;
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tail = iob, iob = iob->io_flink);
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}
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priv->lo_txdone = true;
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}
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return 0;
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}
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/****************************************************************************
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* Function: lo_poll_work
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*
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* Description:
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* Perform periodic polling from the worker thread
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*
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* Parameters:
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* arg - The argument passed when work_queue() as called.
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*
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* Returned Value:
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* OK on success
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*
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* Assumptions:
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* The network is locked
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*
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****************************************************************************/
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static void lo_poll_work(FAR void *arg)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)arg;
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/* Perform the poll */
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net_lock();
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priv->lo_txdone = false;
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(void)devif_timer(&priv->lo_ieee.i_dev, lo_txpoll);
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/* Was something received and looped back? */
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while (priv->lo_txdone)
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{
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/* Yes, poll again for more TX data */
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priv->lo_txdone = false;
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(void)devif_poll(&priv->lo_ieee.i_dev, lo_txpoll);
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}
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/* Setup the watchdog poll timer again */
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(void)wd_start(priv->lo_polldog, LO_WDDELAY, lo_poll_expiry, 1, priv);
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net_unlock();
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}
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/****************************************************************************
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* Function: lo_poll_expiry
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*
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* Description:
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* Periodic timer handler. Called from the timer interrupt handler.
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*
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* Parameters:
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* argc - The number of available arguments
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* arg - The first argument
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* The network is locked.
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*
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****************************************************************************/
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static void lo_poll_expiry(int argc, wdparm_t arg, ...)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)arg;
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/* Schedule to perform the interrupt processing on the worker thread. */
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work_queue(LPBKWORK, &priv->lo_work, lo_poll_work, priv, 0);
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}
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/****************************************************************************
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* Function: lo_ifup
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*
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* Description:
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* NuttX Callback: Bring up the Ethernet interface when an IP address is
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* provided
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*
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* Parameters:
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* dev - Reference to the NuttX driver state structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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****************************************************************************/
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static int lo_ifup(FAR struct net_driver_s *dev)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private;
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#if CONFIG_NET_6LOWPAN_RIMEADDR_SIZE == 2
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ninfo("Bringing up: Rime %02x:%02x PANID=%04x\n",
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dev->d_ipv6addr[0], dev->d_ipv6addr[1], priv->lo_ieee.i_panid);
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#elif CONFIG_NET_6LOWPAN_RIMEADDR_SIZE == 8
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ninfo("Bringing up: Rime %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x PANID=%04x\n",
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dev->d_ipv6addr[0], dev->d_ipv6addr[1], dev->d_ipv6addr[2],
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dev->d_ipv6addr[3], dev->d_ipv6addr[4], dev->d_ipv6addr[5],
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dev->d_ipv6addr[6], dev->d_ipv6addr[7], priv->lo_ieee.i_panid);
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#endif
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/* Set and activate a timer process */
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(void)wd_start(priv->lo_polldog, LO_WDDELAY, lo_poll_expiry,
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1, (wdparm_t)priv);
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priv->lo_bifup = true;
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return OK;
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}
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/****************************************************************************
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* Function: lo_ifdown
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*
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* Description:
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* NuttX Callback: Stop the interface.
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*
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* Parameters:
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* dev - Reference to the NuttX driver state structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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*
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****************************************************************************/
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static int lo_ifdown(FAR struct net_driver_s *dev)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private;
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/* Cancel the TX poll timer and TX timeout timers */
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wd_cancel(priv->lo_polldog);
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/* Mark the device "down" */
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priv->lo_bifup = false;
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return OK;
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}
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/****************************************************************************
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* Function: lo_txavail_work
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*
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* Description:
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* Perform an out-of-cycle poll on the worker thread.
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*
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* Parameters:
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* arg - Reference to the NuttX driver state structure (cast to void*)
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* Called on the higher priority worker thread.
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*
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****************************************************************************/
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static void lo_txavail_work(FAR void *arg)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)arg;
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/* Ignore the notification if the interface is not yet up */
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net_lock();
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if (priv->lo_bifup)
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{
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do
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{
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/* If so, then poll the network for new XMIT data */
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priv->lo_txdone = false;
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(void)devif_poll(&priv->lo_ieee.i_dev, lo_txpoll);
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}
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while (priv->lo_txdone);
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}
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net_unlock();
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}
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/****************************************************************************
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* Function: lo_txavail
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*
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* Description:
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* Driver callback invoked when new TX data is available. This is a
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* stimulus perform an out-of-cycle poll and, thereby, reduce the TX
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* latency.
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*
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* Parameters:
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* dev - Reference to the NuttX driver state structure
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* Called in normal user mode
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*
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****************************************************************************/
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static int lo_txavail(FAR struct net_driver_s *dev)
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{
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FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private;
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/* Is our single work structure available? It may not be if there are
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* pending interrupt actions and we will have to ignore the Tx
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* availability action.
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*/
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if (work_available(&priv->lo_work))
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{
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/* Schedule to serialize the poll on the worker thread. */
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work_queue(LPBKWORK, &priv->lo_work, lo_txavail_work, priv, 0);
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}
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return OK;
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}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: lo_addmac
|
||||
*
|
||||
* Description:
|
||||
* NuttX Callback: Add the specified MAC address to the hardware multicast
|
||||
* address filtering
|
||||
*
|
||||
* Parameters:
|
||||
* dev - Reference to the NuttX driver state structure
|
||||
* mac - The MAC address to be added
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
* Assumptions:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#if defined(CONFIG_NET_IGMP) || defined(CONFIG_NET_ICMPv6)
|
||||
static int lo_addmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
|
||||
{
|
||||
/* There is no multicast support in the loopback driver */
|
||||
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Function: lo_rmmac
|
||||
*
|
||||
* Description:
|
||||
* NuttX Callback: Remove the specified MAC address from the hardware multicast
|
||||
* address filtering
|
||||
*
|
||||
* Parameters:
|
||||
* dev - Reference to the NuttX driver state structure
|
||||
* mac - The MAC address to be removed
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
* Assumptions:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_NET_IGMP
|
||||
static int lo_rmmac(FAR struct net_driver_s *dev, FAR const uint8_t *mac)
|
||||
{
|
||||
/* There is no multicast support in the loopback driver */
|
||||
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Function: localhost_initialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the Ethernet controller and driver
|
||||
*
|
||||
* Parameters:
|
||||
* intf - In the case where there are multiple EMACs, this value
|
||||
* identifies which EMAC is to be initialized.
|
||||
*
|
||||
* Returned Value:
|
||||
* OK on success; Negated errno on failure.
|
||||
*
|
||||
* Assumptions:
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int localhost_initialize(void)
|
||||
{
|
||||
FAR struct lo_driver_s *priv;
|
||||
FAR struct net_driver_s *dev;
|
||||
|
||||
/* Get the interface structure associated with this interface number. */
|
||||
|
||||
priv = &g_loopback;
|
||||
|
||||
/* Initialize the driver structure */
|
||||
|
||||
memset(priv, 0, sizeof(struct lo_driver_s));
|
||||
|
||||
dev = &priv->lo_ieee.i_dev;
|
||||
dev->d_ifup = lo_ifup; /* I/F up (new IP address) callback */
|
||||
dev->d_ifdown = lo_ifdown; /* I/F down callback */
|
||||
dev->d_txavail = lo_txavail; /* New TX data callback */
|
||||
#ifdef CONFIG_NET_IGMP
|
||||
dev->d_addmac = lo_addmac; /* Add multicast MAC address */
|
||||
dev->d_rmmac = lo_rmmac; /* Remove multicast MAC address */
|
||||
#endif
|
||||
dev->d_buf = g_iobuffer; /* Attach the IO buffer */
|
||||
dev->d_private = (FAR void *)priv; /* Used to recover private state from dev */
|
||||
|
||||
/* Create a watchdog for timing polling for and timing of transmissions */
|
||||
|
||||
priv->lo_polldog = wd_create(); /* Create periodic poll timer */
|
||||
|
||||
/* Register the loopabck device with the OS so that socket IOCTLs can b
|
||||
* performed.
|
||||
*/
|
||||
|
||||
(void)netdev_register(&priv->lo_ieee.i_dev, NET_LL_IEEE802154);
|
||||
|
||||
/* Set the local loopback IP address */
|
||||
|
||||
net_ipv6addr_copy(dev->d_ipv6addr, g_lo_ipv6addr);
|
||||
net_ipv6addr_copy(dev->d_ipv6draddr, g_lo_ipv6addr);
|
||||
net_ipv6addr_copy(dev->d_ipv6netmask, g_ipv6_alloneaddr);
|
||||
|
||||
/* Put the network in the UP state */
|
||||
|
||||
dev->d_flags = IFF_UP;
|
||||
return lo_ifup(&priv->lo_ieee.i_dev);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_IEEE802154_LOOPBACK */
|
||||
Loading…
Reference in New Issue
Block a user