net/ieee802154/6lowpan/6lowpan_i.h

   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__ */