forked from Minki/linux
c91208d819
This patch introduce a new mib entry which isn't part of 802.15.4 but useful as default behaviour to set the ack request bit or not if we don't know if the ack request bit should set. This is currently used for stacks like IEEE 802.15.4 6LoWPAN. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
240 lines
6.2 KiB
C
240 lines
6.2 KiB
C
/*
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* Copyright (C) 2007, 2008, 2009 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Written by:
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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*/
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#ifndef __NET_CFG802154_H
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#define __NET_CFG802154_H
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#include <linux/ieee802154.h>
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#include <linux/netdevice.h>
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#include <linux/mutex.h>
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#include <linux/bug.h>
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#include <net/nl802154.h>
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struct wpan_phy;
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struct wpan_phy_cca;
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struct cfg802154_ops {
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struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
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const char *name,
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unsigned char name_assign_type,
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int type);
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void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
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struct net_device *dev);
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int (*suspend)(struct wpan_phy *wpan_phy);
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int (*resume)(struct wpan_phy *wpan_phy);
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int (*add_virtual_intf)(struct wpan_phy *wpan_phy,
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const char *name,
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unsigned char name_assign_type,
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enum nl802154_iftype type,
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__le64 extended_addr);
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int (*del_virtual_intf)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev);
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int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
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int (*set_cca_mode)(struct wpan_phy *wpan_phy,
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const struct wpan_phy_cca *cca);
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int (*set_cca_ed_level)(struct wpan_phy *wpan_phy, s32 ed_level);
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int (*set_tx_power)(struct wpan_phy *wpan_phy, s32 power);
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int (*set_pan_id)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, __le16 pan_id);
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int (*set_short_addr)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, __le16 short_addr);
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int (*set_backoff_exponent)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, u8 min_be,
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u8 max_be);
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int (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev,
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u8 max_csma_backoffs);
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int (*set_max_frame_retries)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev,
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s8 max_frame_retries);
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int (*set_lbt_mode)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, bool mode);
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int (*set_ackreq_default)(struct wpan_phy *wpan_phy,
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struct wpan_dev *wpan_dev, bool ackreq);
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};
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static inline bool
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wpan_phy_supported_bool(bool b, enum nl802154_supported_bool_states st)
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{
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switch (st) {
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case NL802154_SUPPORTED_BOOL_TRUE:
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return b;
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case NL802154_SUPPORTED_BOOL_FALSE:
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return !b;
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case NL802154_SUPPORTED_BOOL_BOTH:
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return true;
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default:
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WARN_ON(1);
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}
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return false;
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}
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struct wpan_phy_supported {
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u32 channels[IEEE802154_MAX_PAGE + 1],
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cca_modes, cca_opts, iftypes;
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enum nl802154_supported_bool_states lbt;
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u8 min_minbe, max_minbe, min_maxbe, max_maxbe,
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min_csma_backoffs, max_csma_backoffs;
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s8 min_frame_retries, max_frame_retries;
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size_t tx_powers_size, cca_ed_levels_size;
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const s32 *tx_powers, *cca_ed_levels;
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};
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struct wpan_phy_cca {
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enum nl802154_cca_modes mode;
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enum nl802154_cca_opts opt;
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};
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static inline bool
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wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b)
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{
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if (a->mode != b->mode)
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return false;
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if (a->mode == NL802154_CCA_ENERGY_CARRIER)
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return a->opt == b->opt;
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return true;
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}
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/**
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* @WPAN_PHY_FLAG_TRANSMIT_POWER: Indicates that transceiver will support
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* transmit power setting.
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* @WPAN_PHY_FLAG_CCA_ED_LEVEL: Indicates that transceiver will support cca ed
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* level setting.
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* @WPAN_PHY_FLAG_CCA_MODE: Indicates that transceiver will support cca mode
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* setting.
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*/
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enum wpan_phy_flags {
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WPAN_PHY_FLAG_TXPOWER = BIT(1),
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WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2),
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WPAN_PHY_FLAG_CCA_MODE = BIT(3),
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};
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struct wpan_phy {
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/* If multiple wpan_phys are registered and you're handed e.g.
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* a regular netdev with assigned ieee802154_ptr, you won't
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* know whether it points to a wpan_phy your driver has registered
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* or not. Assign this to something global to your driver to
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* help determine whether you own this wpan_phy or not.
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*/
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const void *privid;
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u32 flags;
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/*
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* This is a PIB according to 802.15.4-2011.
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* We do not provide timing-related variables, as they
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* aren't used outside of driver
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*/
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u8 current_channel;
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u8 current_page;
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struct wpan_phy_supported supported;
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/* current transmit_power in mBm */
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s32 transmit_power;
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struct wpan_phy_cca cca;
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__le64 perm_extended_addr;
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/* current cca ed threshold in mBm */
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s32 cca_ed_level;
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/* PHY depended MAC PIB values */
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/* 802.15.4 acronym: Tdsym in usec */
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u8 symbol_duration;
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/* lifs and sifs periods timing */
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u16 lifs_period;
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u16 sifs_period;
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struct device dev;
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char priv[0] __aligned(NETDEV_ALIGN);
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};
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struct wpan_dev {
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struct wpan_phy *wpan_phy;
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int iftype;
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/* the remainder of this struct should be private to cfg802154 */
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struct list_head list;
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struct net_device *netdev;
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/* lowpan interface, set when the wpan_dev belongs to one lowpan_dev */
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struct net_device *lowpan_dev;
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u32 identifier;
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/* MAC PIB */
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__le16 pan_id;
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__le16 short_addr;
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__le64 extended_addr;
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/* MAC BSN field */
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atomic_t bsn;
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/* MAC DSN field */
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atomic_t dsn;
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u8 min_be;
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u8 max_be;
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u8 csma_retries;
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s8 frame_retries;
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bool lbt;
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bool promiscuous_mode;
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/* fallback for acknowledgment bit setting */
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bool ackreq;
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};
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#define to_phy(_dev) container_of(_dev, struct wpan_phy, dev)
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struct wpan_phy *
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wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size);
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static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
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{
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phy->dev.parent = dev;
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}
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int wpan_phy_register(struct wpan_phy *phy);
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void wpan_phy_unregister(struct wpan_phy *phy);
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void wpan_phy_free(struct wpan_phy *phy);
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/* Same semantics as for class_for_each_device */
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int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
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static inline void *wpan_phy_priv(struct wpan_phy *phy)
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{
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BUG_ON(!phy);
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return &phy->priv;
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}
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struct wpan_phy *wpan_phy_find(const char *str);
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static inline void wpan_phy_put(struct wpan_phy *phy)
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{
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put_device(&phy->dev);
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}
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static inline const char *wpan_phy_name(struct wpan_phy *phy)
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{
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return dev_name(&phy->dev);
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}
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#endif /* __NET_CFG802154_H */
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