diff options
Diffstat (limited to 'drivers/staging/wilc1000/wilc_wfi_netdevice.c')
| -rw-r--r-- | drivers/staging/wilc1000/wilc_wfi_netdevice.c | 951 |
1 files changed, 0 insertions, 951 deletions
diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.c b/drivers/staging/wilc1000/wilc_wfi_netdevice.c deleted file mode 100644 index ab66ce4bd790..000000000000 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.c +++ /dev/null @@ -1,951 +0,0 @@ -/*! - * @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); - /* host_int_get_rssi(priv->hWILCWFIDrv, &(rssi)); */ - 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); - - /* priv = wiphy_priv(priv->dev->ieee80211_ptr->wiphy); */ - - /* if(priv->monitor_flag) */ - /* mac80211_hwsim_monitor_rx(skb); */ - - - 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]; - - /*if(hwsim_mon!=NULL) - * { - * PRINT_D(RX_DBG, "Freeing monitor interface\n"); - * unregister_netdev(hwsim_mon); - * free_netdev(hwsim_mon); - * }*/ - 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; - char buf[IFNAMSIZ]; - - 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; - /* priv[i] = netdev_priv(WILC_WFI_devs[i]); */ - - 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]); - - if (priv[1]->dev->ieee80211_ptr->wiphy->interface_modes && BIT(NL80211_IFTYPE_MONITOR)) { - /* snprintf(buf, IFNAMSIZ, "mon.%s", priv[1]->dev->name); */ - /* WILC_WFI_init_mon_interface(); */ - /* priv[1]->monitor_flag = 1; */ - - } - priv[0]->bCfgScanning = false; - priv[0]->u32RcvdChCount = 0; - - WILC_memset(priv[0]->au8AssociatedBss, 0xFF, ETH_ALEN); - - - /* ret = host_int_init(&priv[0]->hWILCWFIDrv); */ - /*copy handle to the other driver*/ - /* priv[1]->hWILCWFIDrv = priv[0]->hWILCWFIDrv; */ - 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 |