orinoco.c

linux2.6.16版本

int orinoco_reinit_firmware(struct net_device *dev)
{
	struct orinoco_private *priv = netdev_priv(dev);
	struct hermes *hw = &priv->hw;
	int err;

	err = hermes_init(hw);
	if (err)
		return err;

	err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
	if (err == -EIO && priv->nicbuf_size > TX_NICBUF_SIZE_BUG) {
		/* Try workaround for old Symbol firmware bug */
		printk(KERN_WARNING "%s: firmware ALLOC bug detected "
		       "(old Symbol firmware?). Trying to work around... ",
		       dev->name);
		
		priv->nicbuf_size = TX_NICBUF_SIZE_BUG;
		err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid);
		if (err)
			printk("failed!\n");
		else
			printk("ok.\n");
	}

	return err;
}

static int __orinoco_hw_set_bitrate(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	int err = 0;

	if (priv->bitratemode >= BITRATE_TABLE_SIZE) {
		printk(KERN_ERR "%s: BUG: Invalid bitrate mode %d\n",
		       priv->ndev->name, priv->bitratemode);
		return -EINVAL;
	}

	switch (priv->firmware_type) {
	case FIRMWARE_TYPE_AGERE:
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFTXRATECONTROL,
					   bitrate_table[priv->bitratemode].agere_txratectrl);
		break;
	case FIRMWARE_TYPE_INTERSIL:
	case FIRMWARE_TYPE_SYMBOL:
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFTXRATECONTROL,
					   bitrate_table[priv->bitratemode].intersil_txratectrl);
		break;
	default:
		BUG();
	}

	return err;
}

/* Set fixed AP address */
static int __orinoco_hw_set_wap(struct orinoco_private *priv)
{
	int roaming_flag;
	int err = 0;
	hermes_t *hw = &priv->hw;

	switch (priv->firmware_type) {
	case FIRMWARE_TYPE_AGERE:
		/* not supported */
		break;
	case FIRMWARE_TYPE_INTERSIL:
		if (priv->bssid_fixed)
			roaming_flag = 2;
		else
			roaming_flag = 1;

		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFROAMINGMODE,
					   roaming_flag);
		break;
	case FIRMWARE_TYPE_SYMBOL:
		err = HERMES_WRITE_RECORD(hw, USER_BAP,
					  HERMES_RID_CNFMANDATORYBSSID_SYMBOL,
					  &priv->desired_bssid);
		break;
	}
	return err;
}

/* Change the WEP keys and/or the current keys.  Can be called
 * either from __orinoco_hw_setup_wep() or directly from
 * orinoco_ioctl_setiwencode().  In the later case the association
 * with the AP is not broken (if the firmware can handle it),
 * which is needed for 802.1x implementations. */
static int __orinoco_hw_setup_wepkeys(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	int err = 0;

	switch (priv->firmware_type) {
	case FIRMWARE_TYPE_AGERE:
		err = HERMES_WRITE_RECORD(hw, USER_BAP,
					  HERMES_RID_CNFWEPKEYS_AGERE,
					  &priv->keys);
		if (err)
			return err;
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFTXKEY_AGERE,
					   priv->tx_key);
		if (err)
			return err;
		break;
	case FIRMWARE_TYPE_INTERSIL:
	case FIRMWARE_TYPE_SYMBOL:
		{
			int keylen;
			int i;

			/* Force uniform key length to work around firmware bugs */
			keylen = le16_to_cpu(priv->keys[priv->tx_key].len);
			
			if (keylen > LARGE_KEY_SIZE) {
				printk(KERN_ERR "%s: BUG: Key %d has oversize length %d.\n",
				       priv->ndev->name, priv->tx_key, keylen);
				return -E2BIG;
			}

			/* Write all 4 keys */
			for(i = 0; i < ORINOCO_MAX_KEYS; i++) {
				err = hermes_write_ltv(hw, USER_BAP,
						       HERMES_RID_CNFDEFAULTKEY0 + i,
						       HERMES_BYTES_TO_RECLEN(keylen),
						       priv->keys[i].data);
				if (err)
					return err;
			}

			/* Write the index of the key used in transmission */
			err = hermes_write_wordrec(hw, USER_BAP,
						   HERMES_RID_CNFWEPDEFAULTKEYID,
						   priv->tx_key);
			if (err)
				return err;
		}
		break;
	}

	return 0;
}

static int __orinoco_hw_setup_wep(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	int err = 0;
	int master_wep_flag;
	int auth_flag;

	if (priv->wep_on)
		__orinoco_hw_setup_wepkeys(priv);

	if (priv->wep_restrict)
		auth_flag = HERMES_AUTH_SHARED_KEY;
	else
		auth_flag = HERMES_AUTH_OPEN;

	switch (priv->firmware_type) {
	case FIRMWARE_TYPE_AGERE: /* Agere style WEP */
		if (priv->wep_on) {
			/* Enable the shared-key authentication. */
			err = hermes_write_wordrec(hw, USER_BAP,
						   HERMES_RID_CNFAUTHENTICATION_AGERE,
						   auth_flag);
		}
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFWEPENABLED_AGERE,
					   priv->wep_on);
		if (err)
			return err;
		break;

	case FIRMWARE_TYPE_INTERSIL: /* Intersil style WEP */
	case FIRMWARE_TYPE_SYMBOL: /* Symbol style WEP */
		if (priv->wep_on) {
			if (priv->wep_restrict ||
			    (priv->firmware_type == FIRMWARE_TYPE_SYMBOL))
				master_wep_flag = HERMES_WEP_PRIVACY_INVOKED |
						  HERMES_WEP_EXCL_UNENCRYPTED;
			else
				master_wep_flag = HERMES_WEP_PRIVACY_INVOKED;

			err = hermes_write_wordrec(hw, USER_BAP,
						   HERMES_RID_CNFAUTHENTICATION,
						   auth_flag);
			if (err)
				return err;
		} else
			master_wep_flag = 0;

		if (priv->iw_mode == IW_MODE_MONITOR)
			master_wep_flag |= HERMES_WEP_HOST_DECRYPT;

		/* Master WEP setting : on/off */
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFWEPFLAGS_INTERSIL,
					   master_wep_flag);
		if (err)
			return err;	

		break;
	}

	return 0;
}

static int __orinoco_program_rids(struct net_device *dev)
{
	struct orinoco_private *priv = netdev_priv(dev);
	hermes_t *hw = &priv->hw;
	int err;
	struct hermes_idstring idbuf;

	/* Set the MAC address */
	err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNMACADDR,
			       HERMES_BYTES_TO_RECLEN(ETH_ALEN), dev->dev_addr);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting MAC address\n",
		       dev->name, err);
		return err;
	}

	/* Set up the link mode */
	err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFPORTTYPE,
				   priv->port_type);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting port type\n",
		       dev->name, err);
		return err;
	}
	/* Set the channel/frequency */
	if (priv->channel != 0 && priv->iw_mode != IW_MODE_INFRA) {
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFOWNCHANNEL,
					   priv->channel);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting channel %d\n",
			       dev->name, err, priv->channel);
			return err;
		}
	}

	if (priv->has_ibss) {
		u16 createibss;

		if ((strlen(priv->desired_essid) == 0) && (priv->createibss)) {
			printk(KERN_WARNING "%s: This firmware requires an "
			       "ESSID in IBSS-Ad-Hoc mode.\n", dev->name);
			/* With wvlan_cs, in this case, we would crash.
			 * hopefully, this driver will behave better...
			 * Jean II */
			createibss = 0;
		} else {
			createibss = priv->createibss;
		}
		
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFCREATEIBSS,
					   createibss);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting CREATEIBSS\n",
			       dev->name, err);
			return err;
		}
	}

	/* Set the desired BSSID */
	err = __orinoco_hw_set_wap(priv);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting AP address\n",
		       dev->name, err);
		return err;
	}
	/* Set the desired ESSID */
	idbuf.len = cpu_to_le16(strlen(priv->desired_essid));
	memcpy(&idbuf.val, priv->desired_essid, sizeof(idbuf.val));
	/* WinXP wants partner to configure OWNSSID even in IBSS mode. (jimc) */
	err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNSSID,
			       HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
			       &idbuf);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting OWNSSID\n",
		       dev->name, err);
		return err;
	}
	err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFDESIREDSSID,
			       HERMES_BYTES_TO_RECLEN(strlen(priv->desired_essid)+2),
			       &idbuf);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting DESIREDSSID\n",
		       dev->name, err);
		return err;
	}

	/* Set the station name */
	idbuf.len = cpu_to_le16(strlen(priv->nick));
	memcpy(&idbuf.val, priv->nick, sizeof(idbuf.val));
	err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFOWNNAME,
			       HERMES_BYTES_TO_RECLEN(strlen(priv->nick)+2),
			       &idbuf);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting nickname\n",
		       dev->name, err);
		return err;
	}

	/* Set AP density */
	if (priv->has_sensitivity) {
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFSYSTEMSCALE,
					   priv->ap_density);
		if (err) {
			printk(KERN_WARNING "%s: Error %d setting SYSTEMSCALE.  "
			       "Disabling sensitivity control\n",
			       dev->name, err);

			priv->has_sensitivity = 0;
		}
	}

	/* Set RTS threshold */
	err = hermes_write_wordrec(hw, USER_BAP, HERMES_RID_CNFRTSTHRESHOLD,
				   priv->rts_thresh);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting RTS threshold\n",
		       dev->name, err);
		return err;
	}

	/* Set fragmentation threshold or MWO robustness */
	if (priv->has_mwo)
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFMWOROBUST_AGERE,
					   priv->mwo_robust);
	else
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFFRAGMENTATIONTHRESHOLD,
					   priv->frag_thresh);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting fragmentation\n",
		       dev->name, err);
		return err;
	}

	/* Set bitrate */
	err = __orinoco_hw_set_bitrate(priv);
	if (err) {
		printk(KERN_ERR "%s: Error %d setting bitrate\n",
		       dev->name, err);
		return err;
	}

	/* Set power management */
	if (priv->has_pm) {
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFPMENABLED,
					   priv->pm_on);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting up PM\n",
			       dev->name, err);
			return err;
		}

		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFMULTICASTRECEIVE,
					   priv->pm_mcast);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting up PM\n",
			       dev->name, err);
			return err;
		}
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFMAXSLEEPDURATION,
					   priv->pm_period);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting up PM\n",
			       dev->name, err);
			return err;
		}
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFPMHOLDOVERDURATION,
					   priv->pm_timeout);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting up PM\n",
			       dev->name, err);
			return err;
		}
	}

	/* Set preamble - only for Symbol so far... */
	if (priv->has_preamble) {
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFPREAMBLE_SYMBOL,
					   priv->preamble);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting preamble\n",
			       dev->name, err);
			return err;
		}
	}

	/* Set up encryption */
	if (priv->has_wep) {
		err = __orinoco_hw_setup_wep(priv);
		if (err) {
			printk(KERN_ERR "%s: Error %d activating WEP\n",
			       dev->name, err);
			return err;
		}
	}

	if (priv->iw_mode == IW_MODE_MONITOR) {
		/* Enable monitor mode */
		dev->type = ARPHRD_IEEE80211;
		err = hermes_docmd_wait(hw, HERMES_CMD_TEST | 
					    HERMES_TEST_MONITOR, 0, NULL);
	} else {
		/* Disable monitor mode */
		dev->type = ARPHRD_ETHER;
		err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
					    HERMES_TEST_STOP, 0, NULL);
	}
	if (err)
		return err;

	/* Set promiscuity / multicast*/
	priv->promiscuous = 0;
	priv->mc_count = 0;
	__orinoco_set_multicast_list(dev); /* FIXME: what about the xmit_lock */

	return 0;
}

/* FIXME: return int? */
static void
__orinoco_set_multicast_list(struct net_device *dev)
{
	struct orinoco_private *priv = netdev_priv(dev);
	hermes_t *hw = &priv->hw;
	int err = 0;
	int promisc, mc_count;

	/* The Hermes doesn't seem to have an allmulti mode, so we go
	 * into promiscuous mode and let the upper levels deal. */
	if ( (dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
	     (dev->mc_count > MAX_MULTICAST(priv)) ) {
		promisc = 1;
		mc_count = 0;
	} else {
		promisc = 0;
		mc_count = dev->mc_count;
	}

	if (promisc != priv->promiscuous) {
		err = hermes_write_wordrec(hw, USER_BAP,
					   HERMES_RID_CNFPROMISCUOUSMODE,
					   promisc);
		if (err) {
			printk(KERN_ERR "%s: Error %d setting PROMISCUOUSMODE to 1.\n",