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2 | pj | 1 | #ifndef __SKBUFF__ |
2 | #define __SKBUFF__ |
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3 | |||
4 | #include <linux/compatib.h> |
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5 | |||
6 | #define HAVE_ALLOC_SKB /* For the drivers to know */ |
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7 | #define HAVE_ALIGNABLE_SKB /* Ditto 8) */ |
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8 | |||
9 | |||
10 | #define FREE_READ 1 |
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11 | #define FREE_WRITE 0 |
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12 | |||
13 | #define CHECKSUM_NONE 0 |
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14 | #define CHECKSUM_HW 1 |
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15 | #define CHECKSUM_UNNECESSARY 2 |
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16 | |||
17 | |||
18 | struct sk_buff_head |
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19 | { |
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20 | struct sk_buff * next; |
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21 | struct sk_buff * prev; |
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22 | __u32 qlen; /* Must be same length as a pointer |
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23 | for using debugging */ |
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24 | #if CONFIG_SKB_CHECK |
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25 | int magic_debug_cookie; |
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26 | #endif |
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27 | }; |
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28 | |||
29 | |||
30 | struct sk_buff |
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31 | { |
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32 | struct sk_buff * next; /* Next buffer in list */ |
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33 | struct sk_buff * prev; /* Previous buffer in list */ |
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34 | struct sk_buff_head * list; /* List we are on */ |
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35 | #if CONFIG_SKB_CHECK |
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36 | int magic_debug_cookie; |
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37 | #endif |
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38 | #if 0 |
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39 | struct sk_buff *link3; /* Link for IP protocol level buffer chains */ |
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40 | #endif |
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41 | |||
42 | #if 0 |
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43 | struct sock *sk; /* Socket we are owned by */ |
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44 | #endif |
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45 | struct device *dev; /* Device we arrived on/are leaving by */ |
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46 | #ifdef NOTWORK |
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47 | unsigned long when; /* used to compute rtt's */ |
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48 | struct timeval stamp; /* Time we arrived */ |
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49 | union |
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50 | { |
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51 | struct tcphdr *th; |
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52 | struct ethhdr *eth; |
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53 | struct iphdr *iph; |
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54 | struct udphdr *uh; |
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55 | unsigned char *raw; |
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56 | /* for passing file handles in a unix domain socket */ |
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57 | void *filp; |
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58 | } h; |
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59 | |||
60 | union |
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61 | { |
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62 | /* As yet incomplete physical layer views */ |
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63 | unsigned char *raw; |
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64 | struct ethhdr *ethernet; |
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65 | } mac; |
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66 | |||
67 | struct iphdr *ip_hdr; /* For IPPROTO_RAW */ |
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68 | |||
69 | #endif /*NOTWORK*/ |
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70 | |||
71 | |||
72 | unsigned long len; /* Length of actual data */ |
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73 | #if 0 |
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74 | unsigned long csum; /* Checksum */ |
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75 | __u32 saddr; /* IP source address */ |
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76 | __u32 daddr; /* IP target address */ |
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77 | __u32 raddr; /* IP next hop address */ |
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78 | __u32 seq; /* TCP sequence number */ |
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79 | __u32 end_seq; /* seq [+ fin] [+ syn] + datalen */ |
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80 | __u32 ack_seq; /* TCP ack sequence number */ |
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81 | unsigned char proto_priv[16]; /* Protocol private data */ |
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82 | #endif |
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83 | volatile char acked, /* Are we acked ? */ |
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84 | used, /* Are we in use ? */ |
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85 | free, /* How to free this buffer */ |
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86 | arp; /* Has IP/ARP resolution finished */ |
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87 | #if 0 |
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88 | unsigned char tries, /* Times tried */ |
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89 | lock, /* Are we locked ? */ |
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90 | localroute, /* Local routing asserted for this frame */ |
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91 | pkt_type, /* Packet class */ |
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92 | pkt_bridged, /* Tracker for bridging */ |
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93 | #endif |
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94 | unsigned char ip_summed; /* Driver fed us an IP checksum */ |
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95 | #if 0 |
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96 | #define PACKET_HOST 0 /* To us */ |
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97 | #define PACKET_BROADCAST 1 /* To all */ |
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98 | #define PACKET_MULTICAST 2 /* To group */ |
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99 | #define PACKET_OTHERHOST 3 /* To someone else */ |
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100 | unsigned short users; /* User count - see datagram.c,tcp.c */ |
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101 | #endif |
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102 | unsigned short protocol; /* Packet protocol from driver. */ |
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103 | #if 0 |
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104 | unsigned int truesize; /* Buffer size */ |
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105 | |||
106 | |||
107 | |||
108 | atomic_t count; /* reference count */ |
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109 | |||
110 | |||
111 | struct sk_buff *data_skb; /* Link to the actual data skb */ |
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112 | #endif |
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113 | unsigned char *head; /* Head of buffer */ |
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114 | unsigned char *data; /* Data head pointer */ |
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115 | unsigned char *tail; /* Tail pointer */ |
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116 | #if 0 |
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117 | unsigned char *end; /* End pointer */ |
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118 | void (*destructor)(struct sk_buff *); /* Destruct function */ |
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119 | __u16 redirport; /* Redirect port */ |
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120 | #endif |
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121 | }; |
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122 | |||
123 | #define dev_kfree_skb(a) |
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124 | #define alloc_skb(a,b) dev_alloc_skb(a) |
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125 | /* #define skb_device_unlock(skb); */ |
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126 | extern struct sk_buff * dev_alloc_skb(unsigned int size); |
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127 | extern unsigned char * skb_put(struct sk_buff *skb, int len); |
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128 | extern void skb_queue_head_init(struct sk_buff_head *list); |
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129 | extern struct sk_buff * skb_clone(struct sk_buff *skb, int priority); |
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130 | extern void skb_reserve(struct sk_buff *skb, int len); |
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131 | |||
132 | #endif |