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Linux/net/ieee802154/6lowpan/6lowpan_i.h

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  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 

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