diff options
Diffstat (limited to 'kernel/include/net/mac802154.h')
| -rw-r--r-- | kernel/include/net/mac802154.h | 210 |
1 files changed, 116 insertions, 94 deletions
diff --git a/kernel/include/net/mac802154.h b/kernel/include/net/mac802154.h index 7df28a4c2..da574bbdc 100644 --- a/kernel/include/net/mac802154.h +++ b/kernel/include/net/mac802154.h @@ -23,107 +23,122 @@ #include <net/cfg802154.h> -/* General MAC frame format: - * 2 bytes: Frame Control - * 1 byte: Sequence Number - * 20 bytes: Addressing fields - * 14 bytes: Auxiliary Security Header - */ -#define MAC802154_FRAME_HARD_HEADER_LEN (2 + 1 + 20 + 14) - -/* The following flags are used to indicate changed address settings from +/** + * enum ieee802154_hw_addr_filt_flags - hardware address filtering flags + * + * The following flags are used to indicate changed address settings from * the stack to the hardware. + * + * @IEEE802154_AFILT_SADDR_CHANGED: Indicates that the short address will be + * change. + * + * @IEEE802154_AFILT_IEEEADDR_CHANGED: Indicates that the extended address + * will be change. + * + * @IEEE802154_AFILT_PANID_CHANGED: Indicates that the pan id will be change. + * + * @IEEE802154_AFILT_PANC_CHANGED: Indicates that the address filter will + * do frame address filtering as a pan coordinator. */ +enum ieee802154_hw_addr_filt_flags { + IEEE802154_AFILT_SADDR_CHANGED = BIT(0), + IEEE802154_AFILT_IEEEADDR_CHANGED = BIT(1), + IEEE802154_AFILT_PANID_CHANGED = BIT(2), + IEEE802154_AFILT_PANC_CHANGED = BIT(3), +}; -/* indicates that the Short Address changed */ -#define IEEE802154_AFILT_SADDR_CHANGED 0x00000001 -/* indicates that the IEEE Address changed */ -#define IEEE802154_AFILT_IEEEADDR_CHANGED 0x00000002 -/* indicates that the PAN ID changed */ -#define IEEE802154_AFILT_PANID_CHANGED 0x00000004 -/* indicates that PAN Coordinator status changed */ -#define IEEE802154_AFILT_PANC_CHANGED 0x00000008 - +/** + * struct ieee802154_hw_addr_filt - hardware address filtering settings + * + * @pan_id: pan_id which should be set to the hardware address filter. + * + * @short_addr: short_addr which should be set to the hardware address filter. + * + * @ieee_addr: extended address which should be set to the hardware address + * filter. + * + * @pan_coord: boolean if hardware filtering should be operate as coordinator. + */ struct ieee802154_hw_addr_filt { - __le16 pan_id; /* Each independent PAN selects a unique - * identifier. This PAN id allows communication - * between devices within a network using short - * addresses and enables transmissions between - * devices across independent networks. - */ + __le16 pan_id; __le16 short_addr; __le64 ieee_addr; - u8 pan_coord; -}; - -struct ieee802154_vif { - int type; - - /* must be last */ - u8 drv_priv[0] __aligned(sizeof(void *)); + bool pan_coord; }; +/** + * struct ieee802154_hw - ieee802154 hardware + * + * @extra_tx_headroom: headroom to reserve in each transmit skb for use by the + * driver (e.g. for transmit headers.) + * + * @flags: hardware flags, see &enum ieee802154_hw_flags + * + * @parent: parent device of the hardware. + * + * @priv: pointer to private area that was allocated for driver use along with + * this structure. + * + * @phy: This points to the &struct wpan_phy allocated for this 802.15.4 PHY. + */ struct ieee802154_hw { /* filled by the driver */ int extra_tx_headroom; u32 flags; struct device *parent; + void *priv; /* filled by mac802154 core */ - struct ieee802154_hw_addr_filt hw_filt; - void *priv; struct wpan_phy *phy; - size_t vif_data_size; }; -/* Checksum is in hardware and is omitted from a packet +/** + * enum ieee802154_hw_flags - hardware flags * - * These following flags are used to indicate hardware capabilities to + * These flags are used to indicate hardware capabilities to * the stack. Generally, flags here should have their meaning * done in a way that the simplest hardware doesn't need setting * any particular flags. There are some exceptions to this rule, * however, so you are advised to review these flags carefully. + * + * @IEEE802154_HW_TX_OMIT_CKSUM: Indicates that xmitter will add FCS on it's + * own. + * + * @IEEE802154_HW_LBT: Indicates that transceiver will support listen before + * transmit. + * + * @IEEE802154_HW_CSMA_PARAMS: Indicates that transceiver will support csma + * parameters (max_be, min_be, backoff exponents). + * + * @IEEE802154_HW_FRAME_RETRIES: Indicates that transceiver will support ARET + * frame retries setting. + * + * @IEEE802154_HW_AFILT: Indicates that transceiver will support hardware + * address filter setting. + * + * @IEEE802154_HW_PROMISCUOUS: Indicates that transceiver will support + * promiscuous mode setting. + * + * @IEEE802154_HW_RX_OMIT_CKSUM: Indicates that receiver omits FCS. + * + * @IEEE802154_HW_RX_DROP_BAD_CKSUM: Indicates that receiver will not filter + * frames with bad checksum. */ - -/* Indicates that xmitter will add FCS on it's own. */ -#define IEEE802154_HW_TX_OMIT_CKSUM 0x00000001 -/* Indicates that receiver will autorespond with ACK frames. */ -#define IEEE802154_HW_AACK 0x00000002 -/* Indicates that transceiver will support transmit power setting. */ -#define IEEE802154_HW_TXPOWER 0x00000004 -/* Indicates that transceiver will support listen before transmit. */ -#define IEEE802154_HW_LBT 0x00000008 -/* Indicates that transceiver will support cca mode setting. */ -#define IEEE802154_HW_CCA_MODE 0x00000010 -/* Indicates that transceiver will support cca ed level setting. */ -#define IEEE802154_HW_CCA_ED_LEVEL 0x00000020 -/* Indicates that transceiver will support csma (max_be, min_be, csma retries) - * settings. */ -#define IEEE802154_HW_CSMA_PARAMS 0x00000040 -/* Indicates that transceiver will support ARET frame retries setting. */ -#define IEEE802154_HW_FRAME_RETRIES 0x00000080 -/* Indicates that transceiver will support hardware address filter setting. */ -#define IEEE802154_HW_AFILT 0x00000100 -/* Indicates that transceiver will support promiscuous mode setting. */ -#define IEEE802154_HW_PROMISCUOUS 0x00000200 -/* Indicates that receiver omits FCS. */ -#define IEEE802154_HW_RX_OMIT_CKSUM 0x00000400 -/* Indicates that receiver will not filter frames with bad checksum. */ -#define IEEE802154_HW_RX_DROP_BAD_CKSUM 0x00000800 +enum ieee802154_hw_flags { + IEEE802154_HW_TX_OMIT_CKSUM = BIT(0), + IEEE802154_HW_LBT = BIT(1), + IEEE802154_HW_CSMA_PARAMS = BIT(2), + IEEE802154_HW_FRAME_RETRIES = BIT(3), + IEEE802154_HW_AFILT = BIT(4), + IEEE802154_HW_PROMISCUOUS = BIT(5), + IEEE802154_HW_RX_OMIT_CKSUM = BIT(6), + IEEE802154_HW_RX_DROP_BAD_CKSUM = BIT(7), +}; /* Indicates that receiver omits FCS and xmitter will add FCS on it's own. */ #define IEEE802154_HW_OMIT_CKSUM (IEEE802154_HW_TX_OMIT_CKSUM | \ IEEE802154_HW_RX_OMIT_CKSUM) -/* This groups the most common CSMA support fields into one. */ -#define IEEE802154_HW_CSMA (IEEE802154_HW_CCA_MODE | \ - IEEE802154_HW_CCA_ED_LEVEL | \ - IEEE802154_HW_CSMA_PARAMS) - -/* This groups the most common ARET support fields into one. */ -#define IEEE802154_HW_ARET (IEEE802154_HW_CSMA | \ - IEEE802154_HW_FRAME_RETRIES) - /* struct ieee802154_ops - callbacks from mac802154 to the driver * * This structure contains various callbacks that the driver may @@ -171,7 +186,7 @@ struct ieee802154_hw { * Returns either zero, or negative errno. * * set_txpower: - * Set radio transmit power in dB. Called with pib_lock held. + * Set radio transmit power in mBm. Called with pib_lock held. * Returns either zero, or negative errno. * * set_lbt @@ -184,7 +199,7 @@ struct ieee802154_hw { * Returns either zero, or negative errno. * * set_cca_ed_level - * Sets the CCA energy detection threshold in dBm. Called with pib_lock + * Sets the CCA energy detection threshold in mBm. Called with pib_lock * held. * Returns either zero, or negative errno. * @@ -213,12 +228,11 @@ struct ieee802154_ops { int (*set_hw_addr_filt)(struct ieee802154_hw *hw, struct ieee802154_hw_addr_filt *filt, unsigned long changed); - int (*set_txpower)(struct ieee802154_hw *hw, s8 dbm); + int (*set_txpower)(struct ieee802154_hw *hw, s32 mbm); int (*set_lbt)(struct ieee802154_hw *hw, bool on); int (*set_cca_mode)(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca); - int (*set_cca_ed_level)(struct ieee802154_hw *hw, - s32 level); + int (*set_cca_ed_level)(struct ieee802154_hw *hw, s32 mbm); int (*set_csma_params)(struct ieee802154_hw *hw, u8 min_be, u8 max_be, u8 retries); int (*set_frame_retries)(struct ieee802154_hw *hw, @@ -228,6 +242,21 @@ struct ieee802154_ops { }; /** + * ieee802154_get_fc_from_skb - get the frame control field from an skb + * @skb: skb where the frame control field will be get from + */ +static inline __le16 ieee802154_get_fc_from_skb(const struct sk_buff *skb) +{ + /* return some invalid fc on failure */ + if (unlikely(skb->len < 2)) { + WARN_ON(1); + return cpu_to_le16(0); + } + + return (__force __le16)__get_unaligned_memmove16(skb_mac_header(skb)); +} + +/** * ieee802154_be64_to_le64 - copies and convert be64 to le64 * @le64_dst: le64 destination pointer * @be64_src: be64 source pointer @@ -248,6 +277,16 @@ static inline void ieee802154_le64_to_be64(void *be64_dst, const void *le64_src) } /** + * ieee802154_le16_to_be16 - copies and convert le16 to be16 + * @be16_dst: be16 destination pointer + * @le16_src: le16 source pointer + */ +static inline void ieee802154_le16_to_be16(void *be16_dst, const void *le16_src) +{ + __put_unaligned_memmove16(swab16p(le16_src), be16_dst); +} + +/** * ieee802154_alloc_hw - Allocate a new hardware device * * This must be called once for each hardware device. The returned pointer @@ -299,23 +338,6 @@ int ieee802154_register_hw(struct ieee802154_hw *hw); void ieee802154_unregister_hw(struct ieee802154_hw *hw); /** - * ieee802154_rx - receive frame - * - * Use this function to hand received frames to mac802154. The receive - * buffer in @skb must start with an IEEE 802.15.4 header. In case of a - * paged @skb is used, the driver is recommended to put the ieee802154 - * header of the frame on the linear part of the @skb to avoid memory - * allocation and/or memcpy by the stack. - * - * This function may not be called in IRQ context. Calls to this function - * for a single hardware must be synchronized against each other. - * - * @hw: the hardware this frame came in on - * @skb: the buffer to receive, owned by mac802154 after this call - */ -void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb); - -/** * ieee802154_rx_irqsafe - receive frame * * Like ieee802154_rx() but can be called in IRQ context |