aboutsummaryrefslogtreecommitdiff
path: root/nuttx/drivers/net/vnet.c
diff options
context:
space:
mode:
Diffstat (limited to 'nuttx/drivers/net/vnet.c')
-rw-r--r--nuttx/drivers/net/vnet.c672
1 files changed, 0 insertions, 672 deletions
diff --git a/nuttx/drivers/net/vnet.c b/nuttx/drivers/net/vnet.c
deleted file mode 100644
index e05a39675..000000000
--- a/nuttx/drivers/net/vnet.c
+++ /dev/null
@@ -1,672 +0,0 @@
-/****************************************************************************
- * drivers/net/vnet.c
- *
- * Copyright (C) 2011 Yu Qiang. All rights reserved.
- * Author: Yu Qiang <yuq825@gmail.com>
- *
- * This file is a part of NuttX:
- *
- * Copyright (C) 2011 Gregory Nutt. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. Neither the name NuttX 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.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#if defined(CONFIG_NET) && defined(CONFIG_NET_VNET)
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <time.h>
-#include <string.h>
-#include <debug.h>
-#include <wdog.h>
-#include <errno.h>
-
-#include <nuttx/irq.h>
-#include <nuttx/arch.h>
-
-#include <nuttx/net/uip/uip.h>
-#include <nuttx/net/uip/uip-arp.h>
-#include <nuttx/net/uip/uip-arch.h>
-
-#include <rgmp/vnet.h>
-#include <rgmp/stdio.h>
-
-/****************************************************************************
- * Definitions
- ****************************************************************************/
-
-/* CONFIG_VNET_NINTERFACES determines the number of physical interfaces
- * that will be supported.
- */
-
-#ifndef CONFIG_VNET_NINTERFACES
-# define CONFIG_VNET_NINTERFACES 1
-#endif
-
-/* TX poll deley = 1 seconds. CLK_TCK is the number of clock ticks per second */
-
-#define VNET_WDDELAY (1*CLK_TCK)
-#define VNET_POLLHSEC (1*2)
-
-/* TX timeout = 1 minute */
-
-#define VNET_TXTIMEOUT (60*CLK_TCK)
-
-/* This is a helper pointer for accessing the contents of the Ethernet header */
-
-#define BUF ((struct uip_eth_hdr *)vnet->sk_dev.d_buf)
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/* The vnet_driver_s encapsulates all state information for a single hardware
- * interface
- */
-
-struct vnet_driver_s
-{
- bool sk_bifup; /* true:ifup false:ifdown */
- WDOG_ID sk_txpoll; /* TX poll timer */
- //WDOG_ID sk_txtimeout; /* TX timeout timer */
-
- /* This holds the information visible to uIP/NuttX */
- struct rgmp_vnet *vnet;
- struct uip_driver_s sk_dev; /* Interface understood by uIP */
-};
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static struct vnet_driver_s g_vnet[CONFIG_VNET_NINTERFACES];
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-/* Common TX logic */
-
-static int vnet_transmit(FAR struct vnet_driver_s *vnet);
-static int vnet_uiptxpoll(struct uip_driver_s *dev);
-
-/* Interrupt handling */
-
-static void vnet_txdone(FAR struct vnet_driver_s *vnet);
-
-/* Watchdog timer expirations */
-
-static void vnet_polltimer(int argc, uint32_t arg, ...);
-static void vnet_txtimeout(int argc, uint32_t arg, ...);
-
-/* NuttX callback functions */
-
-static int vnet_ifup(struct uip_driver_s *dev);
-static int vnet_ifdown(struct uip_driver_s *dev);
-static int vnet_txavail(struct uip_driver_s *dev);
-#ifdef CONFIG_NET_IGMP
-static int vnet_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
-static int vnet_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac);
-#endif
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Function: vnet_transmit
- *
- * Description:
- * Start hardware transmission. Called either from the txdone interrupt
- * handling or from watchdog based polling.
- *
- * Parameters:
- * vnet - Reference to the driver state structure
- *
- * Returned Value:
- * OK on success; a negated errno on failure
- *
- * Assumptions:
- * May or may not be called from an interrupt handler. In either case,
- * global interrupts are disabled, either explicitly or indirectly through
- * interrupt handling logic.
- *
- ****************************************************************************/
-
-static int vnet_transmit(FAR struct vnet_driver_s *vnet)
-{
- int err;
-
- /* Verify that the hardware is ready to send another packet. If we get
- * here, then we are committed to sending a packet; Higher level logic
- * must have assured that there is not transmission in progress.
- */
-
- /* Increment statistics */
-
- /* Send the packet: address=vnet->sk_dev.d_buf, length=vnet->sk_dev.d_len */
- err = vnet_xmit(vnet->vnet, (char *)vnet->sk_dev.d_buf, vnet->sk_dev.d_len);
- if (err) {
- /* Setup the TX timeout watchdog (perhaps restarting the timer) */
- //(void)wd_start(vnet->sk_txtimeout, VNET_TXTIMEOUT, vnet_txtimeout, 1, (uint32_t)vnet);
-
- // When vnet_xmit fail, it means TX buffer is full. Watchdog
- // is of no use here because no TX done INT will happen. So
- // we reset the TX buffer directly.
-#ifdef CONFIG_DEBUG
- cprintf("VNET: TX buffer is full\n");
-#endif
- return ERROR;
- }
- else {
- // this step may be unnecessary here
- vnet_txdone(vnet);
- }
-
- return OK;
-}
-
-/****************************************************************************
- * Function: vnet_uiptxpoll
- *
- * Description:
- * The transmitter is available, check if uIP has any outgoing packets ready
- * to send. This is a callback from uip_poll(). uip_poll() may be called:
- *
- * 1. When the preceding TX packet send is complete,
- * 2. When the preceding TX packet send timesout and the interface is reset
- * 3. During normal TX polling
- *
- * Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * OK on success; a negated errno on failure
- *
- * Assumptions:
- * May or may not be called from an interrupt handler. In either case,
- * global interrupts are disabled, either explicitly or indirectly through
- * interrupt handling logic.
- *
- ****************************************************************************/
-
-static int vnet_uiptxpoll(struct uip_driver_s *dev)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
-
- /* If the polling resulted in data that should be sent out on the network,
- * the field d_len is set to a value > 0.
- */
-
- if (vnet->sk_dev.d_len > 0)
- {
- uip_arp_out(&vnet->sk_dev);
- vnet_transmit(vnet);
-
- /* Check if there is room in the device to hold another packet. If not,
- * return a non-zero value to terminate the poll.
- */
- if (vnet_is_txbuff_full(vnet->vnet))
- return 1;
- }
-
- /* If zero is returned, the polling will continue until all connections have
- * been examined.
- */
-
- return 0;
-}
-
-/****************************************************************************
- * Function: rtos_vnet_recv
- *
- * Description:
- * An interrupt was received indicating the availability of a new RX packet
- *
- * Parameters:
- * vnet - Reference to the driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Global interrupts are disabled by interrupt handling logic.
- *
- ****************************************************************************/
-
-void rtos_vnet_recv(struct rgmp_vnet *rgmp_vnet, char *data, int len)
-{
- struct vnet_driver_s *vnet = rgmp_vnet->priv;
-
- do {
- /* Check for errors and update statistics */
-
- /* Check if the packet is a valid size for the uIP buffer configuration */
- if (len > CONFIG_NET_BUFSIZE || len < 14) {
-#ifdef CONFIG_DEBUG
- cprintf("VNET: receive invalid packet of size %d\n", len);
-#endif
- return;
- }
-
- // Copy the data data from the hardware to vnet->sk_dev.d_buf. Set
- // amount of data in vnet->sk_dev.d_len
- memcpy(vnet->sk_dev.d_buf, data, len);
- vnet->sk_dev.d_len = len;
-
- /* We only accept IP packets of the configured type and ARP packets */
-
-#ifdef CONFIG_NET_IPv6
- if (BUF->type == HTONS(UIP_ETHTYPE_IP6))
-#else
- if (BUF->type == HTONS(UIP_ETHTYPE_IP))
-#endif
- {
- uip_arp_ipin(&vnet->sk_dev);
- uip_input(&vnet->sk_dev);
-
- // If the above function invocation resulted in data that should be
- // sent out on the network, the field d_len will set to a value > 0.
- if (vnet->sk_dev.d_len > 0) {
- uip_arp_out(&vnet->sk_dev);
- vnet_transmit(vnet);
- }
- }
- else if (BUF->type == htons(UIP_ETHTYPE_ARP)) {
- uip_arp_arpin(&vnet->sk_dev);
-
- // If the above function invocation resulted in data that should be
- // sent out on the network, the field d_len will set to a value > 0.
- if (vnet->sk_dev.d_len > 0) {
- vnet_transmit(vnet);
- }
- }
- }
- while (0); /* While there are more packets to be processed */
-}
-
-/****************************************************************************
- * Function: vnet_txdone
- *
- * Description:
- * An interrupt was received indicating that the last TX packet(s) is done
- *
- * Parameters:
- * vnet - Reference to the driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Global interrupts are disabled by the watchdog logic.
- *
- ****************************************************************************/
-
-static void vnet_txdone(FAR struct vnet_driver_s *vnet)
-{
- /* Check for errors and update statistics */
-
- /* If no further xmits are pending, then cancel the TX timeout and
- * disable further Tx interrupts.
- */
-
- //wd_cancel(vnet->sk_txtimeout);
-
- /* Then poll uIP for new XMIT data */
-
- (void)uip_poll(&vnet->sk_dev, vnet_uiptxpoll);
-}
-
-/****************************************************************************
- * Function: vnet_txtimeout
- *
- * Description:
- * Our TX watchdog timed out. Called from the timer interrupt handler.
- * The last TX never completed. Reset the hardware and start again.
- *
- * Parameters:
- * argc - The number of available arguments
- * arg - The first argument
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Global interrupts are disabled by the watchdog logic.
- *
- ****************************************************************************/
-
-static void vnet_txtimeout(int argc, uint32_t arg, ...)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)arg;
-
- /* Increment statistics and dump debug info */
-
- /* Then reset the hardware */
-
- /* Then poll uIP for new XMIT data */
-
- (void)uip_poll(&vnet->sk_dev, vnet_uiptxpoll);
-}
-
-/****************************************************************************
- * Function: vnet_polltimer
- *
- * Description:
- * Periodic timer handler. Called from the timer interrupt handler.
- *
- * Parameters:
- * argc - The number of available arguments
- * arg - The first argument
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Global interrupts are disabled by the watchdog logic.
- *
- ****************************************************************************/
-
-static void vnet_polltimer(int argc, uint32_t arg, ...)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)arg;
-
- /* Check if there is room in the send another TX packet. We cannot perform
- * the TX poll if he are unable to accept another packet for transmission.
- */
- if (vnet_is_txbuff_full(vnet->vnet)) {
-#ifdef CONFIG_DEBUG
- cprintf("VNET: TX buffer is full\n");
-#endif
- return;
- }
-
- /* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
- * might be bug here. Does this mean if there is a transmit in progress,
- * we will missing TCP time state updates?
- */
-
- (void)uip_timer(&vnet->sk_dev, vnet_uiptxpoll, VNET_POLLHSEC);
-
- /* Setup the watchdog poll timer again */
-
- (void)wd_start(vnet->sk_txpoll, VNET_WDDELAY, vnet_polltimer, 1, arg);
-}
-
-/****************************************************************************
- * Function: vnet_ifup
- *
- * Description:
- * NuttX Callback: Bring up the Ethernet interface when an IP address is
- * provided
- *
- * Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-static int vnet_ifup(struct uip_driver_s *dev)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
-
- ndbg("Bringing up: %d.%d.%d.%d\n",
- dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
- (dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24 );
-
- /* Initialize PHYs, the Ethernet interface, and setup up Ethernet interrupts */
-
- /* Set and activate a timer process */
-
- (void)wd_start(vnet->sk_txpoll, VNET_WDDELAY, vnet_polltimer, 1, (uint32_t)vnet);
-
- vnet->sk_bifup = true;
- return OK;
-}
-
-/****************************************************************************
- * Function: vnet_ifdown
- *
- * Description:
- * NuttX Callback: Stop the interface.
- *
- * Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-static int vnet_ifdown(struct uip_driver_s *dev)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
- irqstate_t flags;
-
- /* Disable the Ethernet interrupt */
-
- flags = irqsave();
-
- /* Cancel the TX poll timer and TX timeout timers */
-
- wd_cancel(vnet->sk_txpoll);
- //wd_cancel(vnet->sk_txtimeout);
-
- /* Put the the EMAC is its reset, non-operational state. This should be
- * a known configuration that will guarantee the vnet_ifup() always
- * successfully brings the interface back up.
- */
-
- /* Mark the device "down" */
-
- vnet->sk_bifup = false;
- irqrestore(flags);
- return OK;
-}
-
-/****************************************************************************
- * Function: vnet_txavail
- *
- * Description:
- * Driver callback invoked when new TX data is available. This is a
- * stimulus perform an out-of-cycle poll and, thereby, reduce the TX
- * latency.
- *
- * Parameters:
- * dev - Reference to the NuttX driver state structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- * Called in normal user mode
- *
- ****************************************************************************/
-
-static int vnet_txavail(struct uip_driver_s *dev)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
- irqstate_t flags;
-
- /* Disable interrupts because this function may be called from interrupt
- * level processing.
- */
-
- flags = irqsave();
-
- /* Ignore the notification if the interface is not yet up */
-
- if (vnet->sk_bifup)
- {
- /* Check if there is room in the hardware to hold another outgoing packet. */
- if (vnet_is_txbuff_full(vnet->vnet)) {
-#ifdef CONFIG_DEBUG
- cprintf("VNET: TX buffer is full\n");
-#endif
- goto out;
- }
-
- /* If so, then poll uIP for new XMIT data */
-
- (void)uip_poll(&vnet->sk_dev, vnet_uiptxpoll);
- }
-
-out:
- irqrestore(flags);
- return OK;
-}
-
-/****************************************************************************
- * Function: vnet_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:
- *
- ****************************************************************************/
-
-#ifdef CONFIG_NET_IGMP
-static int vnet_addmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
-
- /* Add the MAC address to the hardware multicast routing table */
-
- return OK;
-}
-#endif
-
-/****************************************************************************
- * Function: vnet_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 vnet_rmmac(struct uip_driver_s *dev, FAR const uint8_t *mac)
-{
- FAR struct vnet_driver_s *vnet = (FAR struct vnet_driver_s *)dev->d_private;
-
- /* Add the MAC address to the hardware multicast routing table */
-
- return OK;
-}
-#endif
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Function: vnet_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 vnet_init(struct rgmp_vnet *vnet)
-{
- struct vnet_driver_s *priv;
- static int i = 0;
-
- if (i >= CONFIG_VNET_NINTERFACES)
- return -1;
-
- priv = &g_vnet[i++];
-
- /* Initialize the driver structure */
-
- memset(priv, 0, sizeof(struct vnet_driver_s));
- priv->sk_dev.d_ifup = vnet_ifup; /* I/F down callback */
- priv->sk_dev.d_ifdown = vnet_ifdown; /* I/F up (new IP address) callback */
- priv->sk_dev.d_txavail = vnet_txavail; /* New TX data callback */
-#ifdef CONFIG_NET_IGMP
- priv->sk_dev.d_addmac = vnet_addmac; /* Add multicast MAC address */
- priv->sk_dev.d_rmmac = vnet_rmmac; /* Remove multicast MAC address */
-#endif
- priv->sk_dev.d_private = (void*)priv; /* Used to recover private state from dev */
-
- /* Create a watchdog for timing polling for and timing of transmisstions */
-
- priv->sk_txpoll = wd_create(); /* Create periodic poll timer */
- //priv->sk_txtimeout = wd_create(); /* Create TX timeout timer */
-
- priv->vnet = vnet;
- vnet->priv = priv;
-
- /* Register the device with the OS */
-
- (void)netdev_register(&priv->sk_dev);
-
- return 0;
-}
-
-#endif /* CONFIG_NET && CONFIG_NET_VNET */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 22:12:34 +0000