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Diffstat (limited to 'drivers/uwb/i1480/i1480u-wlp/netdev.c')
-rw-r--r--drivers/uwb/i1480/i1480u-wlp/netdev.c331
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);
-}
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