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-rw-r--r--include/net/ieee802154_netdev.h384
1 files changed, 384 insertions, 0 deletions
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
new file mode 100644
index 000000000..03b64bf87
--- /dev/null
+++ b/include/net/ieee802154_netdev.h
@@ -0,0 +1,384 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * An interface between IEEE802.15.4 device and rest of the kernel.
+ *
+ * Copyright (C) 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Maxim Osipov <maxim.osipov@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#ifndef IEEE802154_NETDEVICE_H
+#define IEEE802154_NETDEVICE_H
+
+#define IEEE802154_REQUIRED_SIZE(struct_type, member) \
+ (offsetof(typeof(struct_type), member) + \
+ sizeof(((typeof(struct_type) *)(NULL))->member))
+
+#define IEEE802154_ADDR_OFFSET \
+ offsetof(typeof(struct sockaddr_ieee802154), addr)
+
+#define IEEE802154_MIN_NAMELEN (IEEE802154_ADDR_OFFSET + \
+ IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, addr_type))
+
+#define IEEE802154_NAMELEN_SHORT (IEEE802154_ADDR_OFFSET + \
+ IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, short_addr))
+
+#define IEEE802154_NAMELEN_LONG (IEEE802154_ADDR_OFFSET + \
+ IEEE802154_REQUIRED_SIZE(struct ieee802154_addr_sa, hwaddr))
+
+#include <net/af_ieee802154.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ieee802154.h>
+
+#include <net/cfg802154.h>
+
+struct ieee802154_sechdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 level:3,
+ key_id_mode:2,
+ reserved:3;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 reserved:3,
+ key_id_mode:2,
+ level:3;
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+ u8 key_id;
+ __le32 frame_counter;
+ union {
+ __le32 short_src;
+ __le64 extended_src;
+ };
+};
+
+struct ieee802154_hdr_fc {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u16 type:3,
+ security_enabled:1,
+ frame_pending:1,
+ ack_request:1,
+ intra_pan:1,
+ reserved:3,
+ dest_addr_mode:2,
+ version:2,
+ source_addr_mode:2;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u16 reserved:1,
+ intra_pan:1,
+ ack_request:1,
+ frame_pending:1,
+ security_enabled:1,
+ type:3,
+ source_addr_mode:2,
+ version:2,
+ dest_addr_mode:2,
+ reserved2:2;
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+};
+
+struct ieee802154_hdr {
+ struct ieee802154_hdr_fc fc;
+ u8 seq;
+ struct ieee802154_addr source;
+ struct ieee802154_addr dest;
+ struct ieee802154_sechdr sec;
+};
+
+/* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
+ * the contents of hdr will be, and the actual value of those bits in
+ * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
+ * version, if SECEN is set.
+ */
+int ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr);
+
+/* pulls the entire 802.15.4 header off of the skb, including the security
+ * header, and performs pan id decompression
+ */
+int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr);
+
+/* parses the frame control, sequence number of address fields in a given skb
+ * and stores them into hdr, performing pan id decompression and length checks
+ * to be suitable for use in header_ops.parse
+ */
+int ieee802154_hdr_peek_addrs(const struct sk_buff *skb,
+ struct ieee802154_hdr *hdr);
+
+/* parses the full 802.15.4 header a given skb and stores them into hdr,
+ * performing pan id decompression and length checks to be suitable for use in
+ * header_ops.parse
+ */
+int ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr);
+
+int ieee802154_max_payload(const struct ieee802154_hdr *hdr);
+
+static inline int
+ieee802154_sechdr_authtag_len(const struct ieee802154_sechdr *sec)
+{
+ switch (sec->level) {
+ case IEEE802154_SCF_SECLEVEL_MIC32:
+ case IEEE802154_SCF_SECLEVEL_ENC_MIC32:
+ return 4;
+ case IEEE802154_SCF_SECLEVEL_MIC64:
+ case IEEE802154_SCF_SECLEVEL_ENC_MIC64:
+ return 8;
+ case IEEE802154_SCF_SECLEVEL_MIC128:
+ case IEEE802154_SCF_SECLEVEL_ENC_MIC128:
+ return 16;
+ case IEEE802154_SCF_SECLEVEL_NONE:
+ case IEEE802154_SCF_SECLEVEL_ENC:
+ default:
+ return 0;
+ }
+}
+
+static inline int ieee802154_hdr_length(struct sk_buff *skb)
+{
+ struct ieee802154_hdr hdr;
+ int len = ieee802154_hdr_pull(skb, &hdr);
+
+ if (len > 0)
+ skb_push(skb, len);
+
+ return len;
+}
+
+static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
+ const struct ieee802154_addr *a2)
+{
+ if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
+ return false;
+
+ if ((a1->mode == IEEE802154_ADDR_LONG &&
+ a1->extended_addr != a2->extended_addr) ||
+ (a1->mode == IEEE802154_ADDR_SHORT &&
+ a1->short_addr != a2->short_addr))
+ return false;
+
+ return true;
+}
+
+static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
+{
+ u64 temp;
+
+ memcpy(&temp, raw, IEEE802154_ADDR_LEN);
+ return (__force __le64)swab64(temp);
+}
+
+static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
+{
+ u64 temp = swab64((__force u64)addr);
+
+ memcpy(raw, &temp, IEEE802154_ADDR_LEN);
+}
+
+static inline int
+ieee802154_sockaddr_check_size(struct sockaddr_ieee802154 *daddr, int len)
+{
+ struct ieee802154_addr_sa *sa;
+ int ret = 0;
+
+ sa = &daddr->addr;
+ if (len < IEEE802154_MIN_NAMELEN)
+ return -EINVAL;
+ switch (sa->addr_type) {
+ case IEEE802154_ADDR_NONE:
+ break;
+ case IEEE802154_ADDR_SHORT:
+ if (len < IEEE802154_NAMELEN_SHORT)
+ ret = -EINVAL;
+ break;
+ case IEEE802154_ADDR_LONG:
+ if (len < IEEE802154_NAMELEN_LONG)
+ ret = -EINVAL;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
+ const struct ieee802154_addr_sa *sa)
+{
+ a->mode = sa->addr_type;
+ a->pan_id = cpu_to_le16(sa->pan_id);
+
+ switch (a->mode) {
+ case IEEE802154_ADDR_SHORT:
+ a->short_addr = cpu_to_le16(sa->short_addr);
+ break;
+ case IEEE802154_ADDR_LONG:
+ a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
+ break;
+ }
+}
+
+static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
+ const struct ieee802154_addr *a)
+{
+ sa->addr_type = a->mode;
+ sa->pan_id = le16_to_cpu(a->pan_id);
+
+ switch (a->mode) {
+ case IEEE802154_ADDR_SHORT:
+ sa->short_addr = le16_to_cpu(a->short_addr);
+ break;
+ case IEEE802154_ADDR_LONG:
+ ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
+ break;
+ }
+}
+
+/*
+ * A control block of skb passed between the ARPHRD_IEEE802154 device
+ * and other stack parts.
+ */
+struct ieee802154_mac_cb {
+ u8 lqi;
+ u8 type;
+ bool ackreq;
+ bool secen;
+ bool secen_override;
+ u8 seclevel;
+ bool seclevel_override;
+ struct ieee802154_addr source;
+ struct ieee802154_addr dest;
+};
+
+static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
+{
+ return (struct ieee802154_mac_cb *)skb->cb;
+}
+
+static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb)
+{
+ BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb));
+
+ memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb));
+ return mac_cb(skb);
+}
+
+enum {
+ IEEE802154_LLSEC_DEVKEY_IGNORE,
+ IEEE802154_LLSEC_DEVKEY_RESTRICT,
+ IEEE802154_LLSEC_DEVKEY_RECORD,
+
+ __IEEE802154_LLSEC_DEVKEY_MAX,
+};
+
+#define IEEE802154_MAC_SCAN_ED 0
+#define IEEE802154_MAC_SCAN_ACTIVE 1
+#define IEEE802154_MAC_SCAN_PASSIVE 2
+#define IEEE802154_MAC_SCAN_ORPHAN 3
+
+struct ieee802154_mac_params {
+ s8 transmit_power;
+ u8 min_be;
+ u8 max_be;
+ u8 csma_retries;
+ s8 frame_retries;
+
+ bool lbt;
+ struct wpan_phy_cca cca;
+ s32 cca_ed_level;
+};
+
+struct wpan_phy;
+
+enum {
+ IEEE802154_LLSEC_PARAM_ENABLED = BIT(0),
+ IEEE802154_LLSEC_PARAM_FRAME_COUNTER = BIT(1),
+ IEEE802154_LLSEC_PARAM_OUT_LEVEL = BIT(2),
+ IEEE802154_LLSEC_PARAM_OUT_KEY = BIT(3),
+ IEEE802154_LLSEC_PARAM_KEY_SOURCE = BIT(4),
+ IEEE802154_LLSEC_PARAM_PAN_ID = BIT(5),
+ IEEE802154_LLSEC_PARAM_HWADDR = BIT(6),
+ IEEE802154_LLSEC_PARAM_COORD_HWADDR = BIT(7),
+ IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = BIT(8),
+};
+
+struct ieee802154_llsec_ops {
+ int (*get_params)(struct net_device *dev,
+ struct ieee802154_llsec_params *params);
+ int (*set_params)(struct net_device *dev,
+ const struct ieee802154_llsec_params *params,
+ int changed);
+
+ int (*add_key)(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key);
+ int (*del_key)(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id);
+
+ int (*add_dev)(struct net_device *dev,
+ const struct ieee802154_llsec_device *llsec_dev);
+ int (*del_dev)(struct net_device *dev, __le64 dev_addr);
+
+ int (*add_devkey)(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key);
+ int (*del_devkey)(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key);
+
+ int (*add_seclevel)(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl);
+ int (*del_seclevel)(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl);
+
+ void (*lock_table)(struct net_device *dev);
+ void (*get_table)(struct net_device *dev,
+ struct ieee802154_llsec_table **t);
+ void (*unlock_table)(struct net_device *dev);
+};
+/*
+ * This should be located at net_device->ml_priv
+ *
+ * get_phy should increment the reference counting on returned phy.
+ * Use wpan_wpy_put to put that reference.
+ */
+struct ieee802154_mlme_ops {
+ /* The following fields are optional (can be NULL). */
+
+ int (*assoc_req)(struct net_device *dev,
+ struct ieee802154_addr *addr,
+ u8 channel, u8 page, u8 cap);
+ int (*assoc_resp)(struct net_device *dev,
+ struct ieee802154_addr *addr,
+ __le16 short_addr, u8 status);
+ int (*disassoc_req)(struct net_device *dev,
+ struct ieee802154_addr *addr,
+ u8 reason);
+ int (*start_req)(struct net_device *dev,
+ struct ieee802154_addr *addr,
+ u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
+ u8 pan_coord, u8 blx, u8 coord_realign);
+ int (*scan_req)(struct net_device *dev,
+ u8 type, u32 channels, u8 page, u8 duration);
+
+ int (*set_mac_params)(struct net_device *dev,
+ const struct ieee802154_mac_params *params);
+ void (*get_mac_params)(struct net_device *dev,
+ struct ieee802154_mac_params *params);
+
+ const struct ieee802154_llsec_ops *llsec;
+};
+
+static inline struct ieee802154_mlme_ops *
+ieee802154_mlme_ops(const struct net_device *dev)
+{
+ return dev->ml_priv;
+}
+
+#endif
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