diff options
Diffstat (limited to 'drivers/uwb/i1480/i1480u-wlp/netdev.c')
| -rw-r--r-- | drivers/uwb/i1480/i1480u-wlp/netdev.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c deleted file mode 100644 index f98f6ce..0000000 --- a/drivers/uwb/i1480/i1480u-wlp/netdev.c +++ /dev/null @@ -1,331 +0,0 @@ -/* - * WUSB Wire Adapter: WLP interface - * Driver for the Linux Network stack. - * - * Copyright (C) 2005-2006 Intel Corporation - * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * - * FIXME: docs - * - * Implementation of the netdevice linkage (except tx and rx related stuff). - * - * ROADMAP: - * - * ENTRY POINTS (Net device): - * - * i1480u_open(): Called when we ifconfig up the interface; - * associates to a UWB host controller, reserves - * bandwidth (MAS), sets up RX USB URB and starts - * the queue. - * - * i1480u_stop(): Called when we ifconfig down a interface; - * reverses _open(). - * - * i1480u_set_config(): - */ - -#include <linux/slab.h> -#include <linux/if_arp.h> -#include <linux/etherdevice.h> - -#include "i1480u-wlp.h" - -struct i1480u_cmd_set_ip_mas { - struct uwb_rccb rccb; - struct uwb_dev_addr addr; - u8 stream; - u8 owner; - u8 type; /* enum uwb_drp_type */ - u8 baMAS[32]; -} __attribute__((packed)); - - -static -int i1480u_set_ip_mas( - struct uwb_rc *rc, - const struct uwb_dev_addr *dstaddr, - u8 stream, u8 owner, u8 type, unsigned long *mas) -{ - - int result; - struct i1480u_cmd_set_ip_mas *cmd; - struct uwb_rc_evt_confirm reply; - - result = -ENOMEM; - cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); - if (cmd == NULL) - goto error_kzalloc; - cmd->rccb.bCommandType = 0xfd; - cmd->rccb.wCommand = cpu_to_le16(0x000e); - cmd->addr = *dstaddr; - cmd->stream = stream; - cmd->owner = owner; - cmd->type = type; - if (mas == NULL) - memset(cmd->baMAS, 0x00, sizeof(cmd->baMAS)); - else - memcpy(cmd->baMAS, mas, sizeof(cmd->baMAS)); - reply.rceb.bEventType = 0xfd; - reply.rceb.wEvent = cpu_to_le16(0x000e); - result = uwb_rc_cmd(rc, "SET-IP-MAS", &cmd->rccb, sizeof(*cmd), - &reply.rceb, sizeof(reply)); - if (result < 0) - goto error_cmd; - if (reply.bResultCode != UWB_RC_RES_FAIL) { - dev_err(&rc->uwb_dev.dev, - "SET-IP-MAS: command execution failed: %d\n", - reply.bResultCode); - result = -EIO; - } -error_cmd: - kfree(cmd); -error_kzalloc: - return result; -} - -/* - * Inform a WLP interface of a MAS reservation - * - * @rc is assumed refcnted. - */ -/* FIXME: detect if remote device is WLP capable? */ -static int i1480u_mas_set_dev(struct uwb_dev *uwb_dev, struct uwb_rc *rc, - u8 stream, u8 owner, u8 type, unsigned long *mas) -{ - int result = 0; - struct device *dev = &rc->uwb_dev.dev; - - result = i1480u_set_ip_mas(rc, &uwb_dev->dev_addr, stream, owner, - type, mas); - if (result < 0) { - char rcaddrbuf[UWB_ADDR_STRSIZE], devaddrbuf[UWB_ADDR_STRSIZE]; - uwb_dev_addr_print(rcaddrbuf, sizeof(rcaddrbuf), - &rc->uwb_dev.dev_addr); - uwb_dev_addr_print(devaddrbuf, sizeof(devaddrbuf), - &uwb_dev->dev_addr); - dev_err(dev, "Set IP MAS (%s to %s) failed: %d\n", - rcaddrbuf, devaddrbuf, result); - } - return result; -} - -/** - * Called by bandwidth allocator when change occurs in reservation. - * - * @rsv: The reservation that is being established, modified, or - * terminated. - * - * When a reservation is established, modified, or terminated the upper layer - * (WLP here) needs set/update the currently available Media Access Slots - * that can be use for IP traffic. - * - * Our action taken during failure depends on how the reservation is being - * changed: - * - if reservation is being established we do nothing if we cannot set the - * new MAS to be used - * - if reservation is being terminated we revert back to PCA whether the - * SET IP MAS command succeeds or not. - */ -void i1480u_bw_alloc_cb(struct uwb_rsv *rsv) -{ - int result = 0; - struct i1480u *i1480u = rsv->pal_priv; - struct device *dev = &i1480u->usb_iface->dev; - struct uwb_dev *target_dev = rsv->target.dev; - struct uwb_rc *rc = i1480u->wlp.rc; - u8 stream = rsv->stream; - int type = rsv->type; - int is_owner = rsv->owner == &rc->uwb_dev; - unsigned long *bmp = rsv->mas.bm; - - dev_err(dev, "WLP callback called - sending set ip mas\n"); - /*user cannot change options while setting configuration*/ - mutex_lock(&i1480u->options.mutex); - switch (rsv->state) { - case UWB_RSV_STATE_T_ACCEPTED: - case UWB_RSV_STATE_O_ESTABLISHED: - result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner, - type, bmp); - if (result < 0) { - dev_err(dev, "MAS reservation failed: %d\n", result); - goto out; - } - if (is_owner) { - wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr, - WLP_DRP | stream); - wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 0); - } - break; - case UWB_RSV_STATE_NONE: - /* revert back to PCA */ - result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner, - type, bmp); - if (result < 0) - dev_err(dev, "MAS reservation failed: %d\n", result); - /* Revert to PCA even though SET IP MAS failed. */ - wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr, - i1480u->options.pca_base_priority); - wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 1); - break; - default: - dev_err(dev, "unexpected WLP reservation state: %s (%d).\n", - uwb_rsv_state_str(rsv->state), rsv->state); - break; - } -out: - mutex_unlock(&i1480u->options.mutex); - return; -} - -/** - * - * Called on 'ifconfig up' - */ -int i1480u_open(struct net_device *net_dev) -{ - int result; - struct i1480u *i1480u = netdev_priv(net_dev); - struct wlp *wlp = &i1480u->wlp; - struct uwb_rc *rc; - struct device *dev = &i1480u->usb_iface->dev; - - rc = wlp->rc; - result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */ - if (result < 0) - goto error_rx_setup; - - result = uwb_radio_start(&wlp->pal); - if (result < 0) - goto error_radio_start; - - netif_wake_queue(net_dev); -#ifdef i1480u_FLOW_CONTROL - result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL); - if (result < 0) { - dev_err(dev, "Can't submit notification URB: %d\n", result); - goto error_notif_urb_submit; - } -#endif - /* Interface is up with an address, now we can create WSS */ - result = wlp_wss_setup(net_dev, &wlp->wss); - if (result < 0) { - dev_err(dev, "Can't create WSS: %d. \n", result); - goto error_wss_setup; - } - return 0; -error_wss_setup: -#ifdef i1480u_FLOW_CONTROL - usb_kill_urb(i1480u->notif_urb); -error_notif_urb_submit: -#endif - uwb_radio_stop(&wlp->pal); -error_radio_start: - netif_stop_queue(net_dev); - i1480u_rx_release(i1480u); -error_rx_setup: - return result; -} - - -/** - * Called on 'ifconfig down' - */ -int i1480u_stop(struct net_device *net_dev) -{ - struct i1480u *i1480u = netdev_priv(net_dev); - struct wlp *wlp = &i1480u->wlp; - - BUG_ON(wlp->rc == NULL); - wlp_wss_remove(&wlp->wss); - netif_carrier_off(net_dev); -#ifdef i1480u_FLOW_CONTROL - usb_kill_urb(i1480u->notif_urb); -#endif - netif_stop_queue(net_dev); - uwb_radio_stop(&wlp->pal); - i1480u_rx_release(i1480u); - i1480u_tx_release(i1480u); - return 0; -} - -/** - * - * Change the interface config--we probably don't have to do anything. - */ -int i1480u_set_config(struct net_device *net_dev, struct ifmap *map) -{ - int result; - struct i1480u *i1480u = netdev_priv(net_dev); - BUG_ON(i1480u->wlp.rc == NULL); - result = 0; - return result; -} - -/** - * Change the MTU of the interface - */ -int i1480u_change_mtu(struct net_device *net_dev, int mtu) -{ - static union { - struct wlp_tx_hdr tx; - struct wlp_rx_hdr rx; - } i1480u_all_hdrs; - - if (mtu < ETH_HLEN) /* We encap eth frames */ - return -ERANGE; - if (mtu > 4000 - sizeof(i1480u_all_hdrs)) - return -ERANGE; - net_dev->mtu = mtu; - return 0; -} - -/** - * Stop the network queue - * - * Enable WLP substack to stop network queue. We also set the flow control - * threshold at this time to prevent the flow control from restarting the - * queue. - * - * we are loosing the current threshold value here ... FIXME? - */ -void i1480u_stop_queue(struct wlp *wlp) -{ - struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp); - struct net_device *net_dev = i1480u->net_dev; - i1480u->tx_inflight.threshold = 0; - netif_stop_queue(net_dev); -} - -/** - * Start the network queue - * - * Enable WLP substack to start network queue. Also re-enable the flow - * control to manage the queue again. - * - * We re-enable the flow control by storing the default threshold in the - * flow control threshold. This means that if the user modified the - * threshold before the queue was stopped and restarted that information - * will be lost. FIXME? - */ -void i1480u_start_queue(struct wlp *wlp) -{ - struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp); - struct net_device *net_dev = i1480u->net_dev; - i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD; - netif_start_queue(net_dev); -} |
