1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __IEEE802154_6LOWPAN_I_H__ 3 #define __IEEE802154_6LOWPAN_I_H__ 4 5 #include <linux/list.h> 6 7 #include <net/ieee802154_netdev.h> 8 #include <net/inet_frag.h> 9 #include <net/6lowpan.h> 10 11 typedef unsigned __bitwise lowpan_rx_result; 12 #define RX_CONTINUE ((__force lowpan_rx_result) 0u) 13 #define RX_DROP_UNUSABLE ((__force lowpan_rx_result) 1u) 14 #define RX_DROP ((__force lowpan_rx_result) 2u) 15 #define RX_QUEUED ((__force lowpan_rx_result) 3u) 16 17 #define LOWPAN_DISPATCH_FRAG1 0xc0 18 #define LOWPAN_DISPATCH_FRAGN 0xe0 19 20 struct lowpan_create_arg { 21 u16 tag; 22 u16 d_size; 23 const struct ieee802154_addr *src; 24 const struct ieee802154_addr *dst; 25 }; 26 27 /* Equivalent of ipv4 struct ip 28 */ 29 struct lowpan_frag_queue { 30 struct inet_frag_queue q; 31 32 u16 tag; 33 u16 d_size; 34 struct ieee802154_addr saddr; 35 struct ieee802154_addr daddr; 36 }; 37 38 static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a) 39 { 40 switch (a->mode) { 41 case IEEE802154_ADDR_LONG: 42 return (((__force u64)a->extended_addr) >> 32) ^ 43 (((__force u64)a->extended_addr) & 0xffffffff); 44 case IEEE802154_ADDR_SHORT: 45 return (__force u32)(a->short_addr + (a->pan_id << 16)); 46 default: 47 return 0; 48 } 49 } 50 51 int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type); 52 void lowpan_net_frag_exit(void); 53 int lowpan_net_frag_init(void); 54 55 void lowpan_rx_init(void); 56 void lowpan_rx_exit(void); 57 58 int lowpan_header_create(struct sk_buff *skb, struct net_device *dev, 59 unsigned short type, const void *_daddr, 60 const void *_saddr, unsigned int len); 61 netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev); 62 63 int lowpan_iphc_decompress(struct sk_buff *skb); 64 lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb); 65 66 #endif /* __IEEE802154_6LOWPAN_I_H__ */ 67