+++ /dev/null
-/*!
- * @file wilc_wfi_netdevice.c
- * @brief File Operations OS wrapper functionality
- * @author mdaftedar
- * @sa wilc_wfi_netdevice.h
- * @date 01 MAR 2012
- * @version 1.0
- */
-
-#ifdef SIMULATION
-
-#include "wilc_wfi_cfgoperations.h"
-#include "host_interface.h"
-
-MODULE_AUTHOR("Mai Daftedar");
-MODULE_LICENSE("Dual BSD/GPL");
-
-struct net_device *WILC_WFI_devs[2];
-
-/*
- * Transmitter lockup simulation, normally disabled.
- */
-static int lockup;
-module_param(lockup, int, 0);
-
-static int timeout = WILC_WFI_TIMEOUT;
-module_param(timeout, int, 0);
-
-/*
- * Do we run in NAPI mode?
- */
-static int use_napi;
-module_param(use_napi, int, 0);
-
-/*
- * A structure representing an in-flight packet.
- */
-struct WILC_WFI_packet {
- struct WILC_WFI_packet *next;
- struct net_device *dev;
- int datalen;
- u8 data[ETH_DATA_LEN];
-};
-
-int pool_size = 8;
-module_param(pool_size, int, 0);
-
-static void WILC_WFI_TxTimeout(struct net_device *dev);
-static void (*WILC_WFI_Interrupt)(int, void *, struct pt_regs *);
-
-/**
- * @brief WILC_WFI_SetupPool
- * @details Set up a device's packet pool.
- * @param[in] struct net_device *dev : Network Device Pointer
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_SetupPool(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- int i;
- struct WILC_WFI_packet *pkt;
-
- priv->ppool = NULL;
- for (i = 0; i < pool_size; i++) {
- pkt = kmalloc(sizeof(struct WILC_WFI_packet), GFP_KERNEL);
- if (pkt == NULL) {
- PRINT_D(RX_DBG, "Ran out of memory allocating packet pool\n");
- return;
- }
- pkt->dev = dev;
- pkt->next = priv->ppool;
- priv->ppool = pkt;
- }
-}
-
-/**
- * @brief WILC_WFI_TearDownPool
- * @details Internal cleanup function that's called after the network device
- * driver is unregistered
- * @param[in] struct net_device *dev : Network Device Driver
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_TearDownPool(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- struct WILC_WFI_packet *pkt;
-
- while ((pkt = priv->ppool)) {
- priv->ppool = pkt->next;
- kfree(pkt);
- /* FIXME - in-flight packets ? */
- }
-}
-
-/**
- * @brief WILC_WFI_GetTxBuffer
- * @details Buffer/pool management
- * @param[in] net_device *dev : Network Device Driver Structure
- * @return struct WILC_WFI_packet
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-struct WILC_WFI_packet *WILC_WFI_GetTxBuffer(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- unsigned long flags;
- struct WILC_WFI_packet *pkt;
-
- spin_lock_irqsave(&priv->lock, flags);
- pkt = priv->ppool;
- priv->ppool = pkt->next;
- if (priv->ppool == NULL) {
- PRINT_INFO(RX_DBG, "Pool empty\n");
- netif_stop_queue(dev);
- }
- spin_unlock_irqrestore(&priv->lock, flags);
- return pkt;
-}
-/**
- * @brief WILC_WFI_ReleaseBuffer
- * @details Buffer/pool management
- * @param[in] WILC_WFI_packet *pkt : Structure holding in-flight packet
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_ReleaseBuffer(struct WILC_WFI_packet *pkt)
-{
- unsigned long flags;
- struct WILC_WFI_priv *priv = netdev_priv(pkt->dev);
-
- spin_lock_irqsave(&priv->lock, flags);
- pkt->next = priv->ppool;
- priv->ppool = pkt;
- spin_unlock_irqrestore(&priv->lock, flags);
- if (netif_queue_stopped(pkt->dev) && pkt->next == NULL)
- netif_wake_queue(pkt->dev);
-}
-
-/**
- * @brief WILC_WFI_EnqueueBuf
- * @details Enqueuing packets in an RX buffer queue
- * @param[in] WILC_WFI_packet *pkt : Structure holding in-flight packet
- * @param[in] net_device *dev : Network Device Driver Structure
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_EnqueueBuf(struct net_device *dev, struct WILC_WFI_packet *pkt)
-{
- unsigned long flags;
- struct WILC_WFI_priv *priv = netdev_priv(dev);
-
- spin_lock_irqsave(&priv->lock, flags);
- pkt->next = priv->rx_queue; /* FIXME - misorders packets */
- priv->rx_queue = pkt;
- spin_unlock_irqrestore(&priv->lock, flags);
-}
-
-/**
- * @brief WILC_WFI_DequeueBuf
- * @details Dequeuing packets from the RX buffer queue
- * @param[in] net_device *dev : Network Device Driver Structure
- * @return WILC_WFI_packet *pkt : Structure holding in-flight pac
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-struct WILC_WFI_packet *WILC_WFI_DequeueBuf(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- struct WILC_WFI_packet *pkt;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
- pkt = priv->rx_queue;
- if (pkt != NULL)
- priv->rx_queue = pkt->next;
- spin_unlock_irqrestore(&priv->lock, flags);
- return pkt;
-}
-/**
- * @brief WILC_WFI_RxInts
- * @details Enable and disable receive interrupts.
- * @param[in] net_device *dev : Network Device Driver Structure
- * @param[in] enable : Enable/Disable flag
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-static void WILC_WFI_RxInts(struct net_device *dev, int enable)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
-
- priv->rx_int_enabled = enable;
-}
-
-/**
- * @brief WILC_WFI_Open
- * @details Open Network Device Driver, called when the network
- * interface is opened. It starts the interface's transmit queue.
- * @param[in] net_device *dev : Network Device Driver Structure
- * @param[in] enable : Enable/Disable flag
- * @return int : Returns 0 upon success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Open(struct net_device *dev)
-{
- /* request_region(), request_irq(), .... (like fops->open) */
- /*
- * Assign the hardware address of the board: use "\0SNULx", where
- * x is 0 or 1. The first byte is '\0' to avoid being a multicast
- * address (the first byte of multicast addrs is odd).
- */
- memcpy(dev->dev_addr, "\0WLAN0", ETH_ALEN);
- if (dev == WILC_WFI_devs[1])
- dev->dev_addr[ETH_ALEN - 1]++; /* \0SNUL1 */
-
- WILC_WFI_InitHostInt(dev);
- netif_start_queue(dev);
- return 0;
-}
-/**
- * @brief WILC_WFI_Release
- * @details Release Network Device Driver, called when the network
- * interface is stopped or brought down. This function marks
- * the network driver as not being able to transmit
- * @param[in] net_device *dev : Network Device Driver Structure
- * @return int : Return 0 on Success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Release(struct net_device *dev)
-{
- /* release ports, irq and such -- like fops->close */
- netif_stop_queue(dev); /* can't transmit any more */
-
- return 0;
-}
-/**
- * @brief WILC_WFI_Config
- * @details Configuration changes (passed on by ifconfig)
- * @param[in] net_device *dev : Network Device Driver Structure
- * @param[in] struct ifmap *map : Contains the ioctl implementation for the
- * network driver.
- * @return int : Return 0 on Success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Config(struct net_device *dev, struct ifmap *map)
-{
- if (dev->flags & IFF_UP) /* can't act on a running interface */
- return -EBUSY;
-
- /* Don't allow changing the I/O address */
- if (map->base_addr != dev->base_addr) {
- PRINT_D(RX_DBG, KERN_WARNING "WILC_WFI: Can't change I/O address\n");
- return -EOPNOTSUPP;
- }
-
- /* Allow changing the IRQ */
- if (map->irq != dev->irq) {
- dev->irq = map->irq;
- /* request_irq() is delayed to open-time */
- }
-
- /* ignore other fields */
- return 0;
-}
-/**
- * @brief WILC_WFI_Rx
- * @details Receive a packet: retrieve, encapsulate and pass over to upper
- * levels
- * @param[in] net_device *dev : Network Device Driver Structure
- * @param[in] WILC_WFI_packet :
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_Rx(struct net_device *dev, struct WILC_WFI_packet *pkt)
-{
- int i;
- struct sk_buff *skb;
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- s8 rssi;
- /*
- * The packet has been retrieved from the transmission
- * medium. Build an skb around it, so upper layers can handle it
- */
-
-
- skb = dev_alloc_skb(pkt->datalen + 2);
- if (!skb) {
- if (printk_ratelimit())
- PRINT_D(RX_DBG, "WILC_WFI rx: low on mem - packet dropped\n");
- priv->stats.rx_dropped++;
- goto out;
- }
- skb_reserve(skb, 2); /* align IP on 16B boundary */
- memcpy(skb_put(skb, pkt->datalen), pkt->data, pkt->datalen);
-
- if (priv->monitor_flag) {
- PRINT_INFO(RX_DBG, "In monitor device name %s\n", dev->name);
- priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy);
- PRINT_D(RX_DBG, "VALUE PASSED IN OF HRWD %p\n", priv->hWILCWFIDrv);
- if (INFO) {
- for (i = 14; i < skb->len; i++)
- PRINT_INFO(RX_DBG, "RXdata[%d] %02x\n", i, skb->data[i]);
- }
- WILC_WFI_monitor_rx(dev, skb);
- return;
- }
-out:
- return;
-}
-
-/**
- * @brief WILC_WFI_Poll
- * @details The poll implementation
- * @param[in] struct napi_struct *napi :
- * @param[in] int budget :
- * @return int : Return 0 on Success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-static int WILC_WFI_Poll(struct napi_struct *napi, int budget)
-{
- int npackets = 0;
- struct sk_buff *skb;
- struct WILC_WFI_priv *priv = container_of(napi, struct WILC_WFI_priv, napi);
- struct net_device *dev = priv->dev;
- struct WILC_WFI_packet *pkt;
-
- while (npackets < budget && priv->rx_queue) {
- pkt = WILC_WFI_DequeueBuf(dev);
- skb = dev_alloc_skb(pkt->datalen + 2);
- if (!skb) {
- if (printk_ratelimit())
- PRINT_D(RX_DBG, "WILC_WFI: packet dropped\n");
- priv->stats.rx_dropped++;
- WILC_WFI_ReleaseBuffer(pkt);
- continue;
- }
- skb_reserve(skb, 2); /* align IP on 16B boundary */
- memcpy(skb_put(skb, pkt->datalen), pkt->data, pkt->datalen);
- skb->dev = dev;
- skb->protocol = eth_type_trans(skb, dev);
- skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */
- netif_receive_skb(skb);
- /* Maintain stats */
- npackets++;
- WILC_WFI_update_stats(priv->dev->ieee80211_ptr->wiphy, pkt->datalen, WILC_WFI_RX_PKT);
- WILC_WFI_ReleaseBuffer(pkt);
- }
- /* If we processed all packets, we're done; tell the kernel and re-enable ints */
- if (npackets < budget) {
- napi_complete(napi);
- WILC_WFI_RxInts(dev, 1);
- }
- return npackets;
-}
-
-/**
- * @brief WILC_WFI_Poll
- * @details The typical interrupt entry point
- * @param[in] struct napi_struct *napi :
- * @param[in] int budget :
- * @return int : Return 0 on Success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-static void WILC_WFI_RegularInterrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- int statusword;
- struct WILC_WFI_priv *priv;
- struct WILC_WFI_packet *pkt = NULL;
- /*
- * As usual, check the "device" pointer to be sure it is
- * really interrupting.
- * Then assign "struct device *dev"
- */
- struct net_device *dev = (struct net_device *)dev_id;
- /* ... and check with hw if it's really ours */
-
- /* paranoid */
- if (!dev)
- return;
-
- /* Lock the device */
- priv = netdev_priv(dev);
- spin_lock(&priv->lock);
-
- /* retrieve statusword: real netdevices use I/O instructions */
- statusword = priv->status;
- priv->status = 0;
- if (statusword & WILC_WFI_RX_INTR) {
- /* send it to WILC_WFI_rx for handling */
- pkt = priv->rx_queue;
- if (pkt) {
- priv->rx_queue = pkt->next;
- WILC_WFI_Rx(dev, pkt);
- }
- }
- if (statusword & WILC_WFI_TX_INTR) {
- /* a transmission is over: free the skb */
- WILC_WFI_update_stats(priv->dev->ieee80211_ptr->wiphy, priv->tx_packetlen, WILC_WFI_TX_PKT);
- dev_kfree_skb(priv->skb);
- }
-
- /* Unlock the device and we are done */
- spin_unlock(&priv->lock);
- if (pkt)
- WILC_WFI_ReleaseBuffer(pkt); /* Do this outside the lock! */
- return;
-}
-/**
- * @brief WILC_WFI_NapiInterrupt
- * @details A NAPI interrupt handler
- * @param[in] irq:
- * @param[in] dev_id:
- * @param[in] pt_regs:
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-static void WILC_WFI_NapiInterrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- int statusword;
- struct WILC_WFI_priv *priv;
-
- /*
- * As usual, check the "device" pointer for shared handlers.
- * Then assign "struct device *dev"
- */
- struct net_device *dev = (struct net_device *)dev_id;
- /* ... and check with hw if it's really ours */
-
- /* paranoid */
- if (!dev)
- return;
-
- /* Lock the device */
- priv = netdev_priv(dev);
- spin_lock(&priv->lock);
-
- /* retrieve statusword: real netdevices use I/O instructions */
- statusword = priv->status;
- priv->status = 0;
- if (statusword & WILC_WFI_RX_INTR) {
- WILC_WFI_RxInts(dev, 0); /* Disable further interrupts */
- napi_schedule(&priv->napi);
- }
- if (statusword & WILC_WFI_TX_INTR) {
- /* a transmission is over: free the skb */
-
- WILC_WFI_update_stats(priv->dev->ieee80211_ptr->wiphy, priv->tx_packetlen, WILC_WFI_TX_PKT);
- dev_kfree_skb(priv->skb);
- }
-
- /* Unlock the device and we are done */
- spin_unlock(&priv->lock);
- return;
-}
-
-/**
- * @brief MI_WFI_HwTx
- * @details Transmit a packet (low level interface)
- * @param[in] buf:
- * @param[in] len:
- * @param[in] net_device *dev:
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_HwTx(char *buf, int len, struct net_device *dev)
-{
- /*
- * This function deals with hw details. This interface loops
- * back the packet to the other WILC_WFI interface (if any).
- * In other words, this function implements the WILC_WFI behaviour,
- * while all other procedures are rather device-independent
- */
- struct iphdr *ih;
- struct net_device *dest;
- struct WILC_WFI_priv *priv;
- u32 *saddr, *daddr;
- struct WILC_WFI_packet *tx_buffer;
-
- /* I am paranoid. Ain't I? */
- if (len < sizeof(struct ethhdr) + sizeof(struct iphdr)) {
- PRINT_D(RX_DBG, "WILC_WFI: Hmm... packet too short (%i octets)\n",
- len);
- return;
- }
-
- if (0) { /* enable this conditional to look at the data */
- int i;
-
- PRINT_D(RX_DBG, "len is %i", len);
- for (i = 14; i < len; i++)
- PRINT_D(RX_DBG, "TXdata[%d] %02x\n", i, buf[i] & 0xff);
- /* PRINT_D(RX_DBG, "\n"); */
- }
- /*
- * Ethhdr is 14 bytes, but the kernel arranges for iphdr
- * to be aligned (i.e., ethhdr is unaligned)
- */
- ih = (struct iphdr *)(buf + sizeof(struct ethhdr));
- saddr = &ih->saddr;
- daddr = &ih->daddr;
-
- ((u8 *)saddr)[2] ^= 1; /* change the third octet (class C) */
- ((u8 *)daddr)[2] ^= 1;
-
- ih->check = 0; /* and rebuild the checksum (ip needs it) */
- ih->check = ip_fast_csum((unsigned char *)ih, ih->ihl);
-
-
- if (dev == WILC_WFI_devs[0])
- PRINT_D(RX_DBG, "%08x:%05i --> %08x:%05i\n",
- ntohl(ih->saddr), ntohs(((struct tcphdr *)(ih + 1))->source),
- ntohl(ih->daddr), ntohs(((struct tcphdr *)(ih + 1))->dest));
- else
- PRINT_D(RX_DBG, "%08x:%05i <-- %08x:%05i\n",
- ntohl(ih->daddr), ntohs(((struct tcphdr *)(ih + 1))->dest),
- ntohl(ih->saddr), ntohs(((struct tcphdr *)(ih + 1))->source));
-
- /*
- * Ok, now the packet is ready for transmission: first simulate a
- * receive interrupt on the twin device, then a
- * transmission-done on the transmitting device
- */
- dest = WILC_WFI_devs[dev == WILC_WFI_devs[0] ? 1 : 0];
- priv = netdev_priv(dest);
-
- tx_buffer = WILC_WFI_GetTxBuffer(dev);
- tx_buffer->datalen = len;
- memcpy(tx_buffer->data, buf, len);
- WILC_WFI_EnqueueBuf(dest, tx_buffer);
- if (priv->rx_int_enabled) {
- priv->status |= WILC_WFI_RX_INTR;
- WILC_WFI_Interrupt(0, dest, NULL);
- }
-
- priv = netdev_priv(dev);
- priv->tx_packetlen = len;
- priv->tx_packetdata = buf;
- priv->status |= WILC_WFI_TX_INTR;
- if (lockup && ((priv->stats.tx_packets + 1) % lockup) == 0) {
- /* Simulate a dropped transmit interrupt */
- netif_stop_queue(dev);
- PRINT_D(RX_DBG, "Simulate lockup at %ld, txp %ld\n", jiffies,
- (unsigned long) priv->stats.tx_packets);
- } else
- WILC_WFI_Interrupt(0, dev, NULL);
-}
-
-/**
- * @brief WILC_WFI_Tx
- * @details Transmit a packet (called by the kernel)
- * @param[in] sk_buff *skb:
- * @param[in] net_device *dev:
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Tx(struct sk_buff *skb, struct net_device *dev)
-{
- int len;
- char *data, shortpkt[ETH_ZLEN];
- struct WILC_WFI_priv *priv = netdev_priv(dev);
-
- data = skb->data;
- len = skb->len;
-
- if (len < ETH_ZLEN) {
- memset(shortpkt, 0, ETH_ZLEN);
- memcpy(shortpkt, skb->data, skb->len);
- len = ETH_ZLEN;
- data = shortpkt;
- }
- dev->trans_start = jiffies; /* save the timestamp */
-
- /* Remember the skb, so we can free it at interrupt time */
- priv->skb = skb;
-
- /* actual deliver of data is device-specific, and not shown here */
- WILC_WFI_HwTx(data, len, dev);
-
- return 0; /* Our simple device can not fail */
-}
-
-/**
- * @brief WILC_WFI_TxTimeout
- * @details Deal with a transmit timeout.
- * @param[in] net_device *dev:
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_TxTimeout(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
-
- PRINT_D(RX_DBG, "Transmit timeout at %ld, latency %ld\n", jiffies,
- jiffies - dev->trans_start);
- /* Simulate a transmission interrupt to get things moving */
- priv->status = WILC_WFI_TX_INTR;
- WILC_WFI_Interrupt(0, dev, NULL);
- priv->stats.tx_errors++;
- netif_wake_queue(dev);
- return;
-}
-
-/**
- * @brief WILC_WFI_Ioctl
- * @details Ioctl commands
- * @param[in] net_device *dev:
- * @param[in] ifreq *rq
- * @param[in] cmd:
- * @return int : Return 0 on Success
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- PRINT_D(RX_DBG, "ioctl\n");
- return 0;
-}
-
-/**
- * @brief WILC_WFI_Stat
- * @details Return statistics to the caller
- * @param[in] net_device *dev:
- * @return WILC_WFI_Stats : Return net_device_stats stucture with the
- * network device driver private data contents.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-struct net_device_stats *WILC_WFI_Stats(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv = netdev_priv(dev);
-
- return &priv->stats;
-}
-
-/**
- * @brief WILC_WFI_RebuildHeader
- * @details This function is called to fill up an eth header, since arp is not
- * available on the interface
- * @param[in] sk_buff *skb:
- * @return int : Return 0 on Success
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_RebuildHeader(struct sk_buff *skb)
-{
- struct ethhdr *eth = (struct ethhdr *) skb->data;
- struct net_device *dev = skb->dev;
-
- memcpy(eth->h_source, dev->dev_addr, dev->addr_len);
- memcpy(eth->h_dest, dev->dev_addr, dev->addr_len);
- eth->h_dest[ETH_ALEN - 1] ^= 0x01; /* dest is us xor 1 */
- return 0;
-}
-/**
- * @brief WILC_WFI_RebuildHeader
- * @details This function is called to fill up an eth header, since arp is not
- * available on the interface
- * @param[in] sk_buff *skb:
- * @param[in] struct net_device *dev:
- * @param[in] unsigned short type:
- * @param[in] const void *saddr,
- * @param[in] const void *daddr:
- * @param[in] unsigned int len
- * @return int : Return 0 on Success
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_Header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, const void *daddr, const void *saddr,
- unsigned int len)
-{
- struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
-
- eth->h_proto = htons(type);
- memcpy(eth->h_source, saddr ? saddr : dev->dev_addr, dev->addr_len);
- memcpy(eth->h_dest, daddr ? daddr : dev->dev_addr, dev->addr_len);
- eth->h_dest[ETH_ALEN - 1] ^= 0x01; /* dest is us xor 1 */
- return dev->hard_header_len;
-}
-
-/**
- * @brief WILC_WFI_ChangeMtu
- * @details The "change_mtu" method is usually not needed.
- * If you need it, it must be like this.
- * @param[in] net_device *dev : Network Device Driver Structure
- * @param[in] new_mtu :
- * @return int : Returns 0 on Success.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_ChangeMtu(struct net_device *dev, int new_mtu)
-{
- unsigned long flags;
- struct WILC_WFI_priv *priv = netdev_priv(dev);
- spinlock_t *lock = &priv->lock;
-
- /* check ranges */
- if ((new_mtu < 68) || (new_mtu > 1500))
- return -EINVAL;
- /*
- * Do anything you need, and the accept the value
- */
- spin_lock_irqsave(lock, flags);
- dev->mtu = new_mtu;
- spin_unlock_irqrestore(lock, flags);
- return 0; /* success */
-}
-
-static const struct header_ops WILC_WFI_header_ops = {
- .create = WILC_WFI_Header,
- .rebuild = WILC_WFI_RebuildHeader,
- .cache = NULL, /* disable caching */
-};
-
-
-static const struct net_device_ops WILC_WFI_netdev_ops = {
- .ndo_open = WILC_WFI_Open,
- .ndo_stop = WILC_WFI_Release,
- .ndo_set_config = WILC_WFI_Config,
- .ndo_start_xmit = WILC_WFI_Tx,
- .ndo_do_ioctl = WILC_WFI_Ioctl,
- .ndo_get_stats = WILC_WFI_Stats,
- .ndo_change_mtu = WILC_WFI_ChangeMtu,
- .ndo_tx_timeout = WILC_WFI_TxTimeout,
-};
-
-/**
- * @brief WILC_WFI_Init
- * @details The init function (sometimes called probe).
- * It is invoked by register_netdev()
- * @param[in] net_device *dev:
- * @return NONE
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-void WILC_WFI_Init(struct net_device *dev)
-{
- struct WILC_WFI_priv *priv;
-
- /*
- * Then, assign other fields in dev, using ether_setup() and some
- * hand assignments
- */
- ether_setup(dev); /* assign some of the fields */
- /* 1- Allocate space */
-
- dev->netdev_ops = &WILC_WFI_netdev_ops;
- dev->header_ops = &WILC_WFI_header_ops;
- dev->watchdog_timeo = timeout;
- /* keep the default flags, just add NOARP */
- dev->flags |= IFF_NOARP;
- dev->features |= NETIF_F_NO_CSUM;
- /*
- * Then, initialize the priv field. This encloses the statistics
- * and a few private fields.
- */
- priv = netdev_priv(dev);
- memset(priv, 0, sizeof(struct WILC_WFI_priv));
- priv->dev = dev;
- netif_napi_add(dev, &priv->napi, WILC_WFI_Poll, 2);
- /* The last parameter above is the NAPI "weight". */
- spin_lock_init(&priv->lock);
- WILC_WFI_RxInts(dev, 1); /* enable receive interrupts */
- WILC_WFI_SetupPool(dev);
-}
-
-/**
- * @brief WILC_WFI_Stat
- * @details Return statistics to the caller
- * @param[in] net_device *dev:
- * @return WILC_WFI_Stats : Return net_device_stats stucture with the
- * network device driver private data contents.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-
-void WILC_WFI_Cleanup(void)
-{
- int i;
- struct WILC_WFI_priv *priv[2];
-
- for (i = 0; i < 2; i++) {
- priv[i] = netdev_priv(WILC_WFI_devs[i]);
-
- if (WILC_WFI_devs[i]) {
- PRINT_D(RX_DBG, "Unregistering\n");
- unregister_netdev(WILC_WFI_devs[i]);
- WILC_WFI_TearDownPool(WILC_WFI_devs[i]);
- free_netdev(WILC_WFI_devs[i]);
- PRINT_D(RX_DBG, "[NETDEV]Stopping interface\n");
- WILC_WFI_DeInitHostInt(WILC_WFI_devs[i]);
- WILC_WFI_WiphyFree(WILC_WFI_devs[i]);
- }
-
- }
- /* unregister_netdev(hwsim_mon); */
- WILC_WFI_deinit_mon_interface();
- return;
-}
-
-
-void StartConfigSim(void);
-
-/**
- * @brief WILC_WFI_Stat
- * @details Return statistics to the caller
- * @param[in] net_device *dev:
- * @return WILC_WFI_Stats : Return net_device_stats stucture with the
- * network device driver private data contents.
- * @author mdaftedar
- * @date 01 MAR 2012
- * @version 1.0
- */
-int WILC_WFI_InitModule(void)
-{
-
- int result, i, ret = -ENOMEM;
- struct WILC_WFI_priv *priv[2], *netpriv;
- struct wireless_dev *wdev;
-
- WILC_WFI_Interrupt = use_napi ? WILC_WFI_NapiInterrupt : WILC_WFI_RegularInterrupt;
-
- for (i = 0; i < 2; i++) {
- /* Allocate the net devices */
- WILC_WFI_devs[i] = alloc_netdev(sizeof(struct WILC_WFI_priv), "wlan%d",
- WILC_WFI_Init);
- if (WILC_WFI_devs[i] == NULL)
- goto out;
-
- wdev = WILC_WFI_WiphyRegister(WILC_WFI_devs[i]);
- WILC_WFI_devs[i]->ieee80211_ptr = wdev;
- netpriv = netdev_priv(WILC_WFI_devs[i]);
- netpriv->dev->ieee80211_ptr = wdev;
- netpriv->dev->ml_priv = netpriv;
- wdev->netdev = netpriv->dev;
-
- /*Registering the net device*/
- result = register_netdev(WILC_WFI_devs[i]);
- if (result)
- PRINT_D(RX_DBG, "WILC_WFI: error %i registering device \"%s\"\n",
- result, WILC_WFI_devs[i]->name);
- else
- ret = 0;
- }
-
- /*init atmel driver */
- priv[0] = netdev_priv(WILC_WFI_devs[0]);
- priv[1] = netdev_priv(WILC_WFI_devs[1]);
-
- priv[0]->bCfgScanning = false;
- priv[0]->u32RcvdChCount = 0;
-
- WILC_memset(priv[0]->au8AssociatedBss, 0xFF, ETH_ALEN);
-
- if (ret)
- PRINT_ER("Error Init Driver\n");
-
-out:
- if (ret)
- WILC_WFI_Cleanup();
- return ret;
-
-
-}
-
-module_init(WILC_WFI_InitModule);
-module_exit(WILC_WFI_Cleanup);
-
-#endif
projects / deliverable / linux.git / commitdiff
