64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
#ident "include/net/ip_var.h: $Revision: 1.3 $"
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/*
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* Overlay for ip header used by other protocols (tcp, udp).
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*/
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struct ipovly {
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int ih_next, ih_prev; /* for protocol sequence q's */
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u_char ih_x1; /* (unused) */
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u_char ih_pr; /* protocol */
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short ih_len; /* protocol length */
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struct in_addr ih_src; /* source internet address */
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struct in_addr ih_dst; /* destination internet address */
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};
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/*
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* Ip reassembly queue structure. Each fragment
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* being reassembled is attached to one of these structures.
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* They are timed out after ipq_ttl drops to 0, and may also
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* be reclaimed if memory becomes tight.
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*/
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struct ipq {
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struct ipq *next,*prev; /* to other reass headers */
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u_char ipq_ttl; /* time for reass q to live */
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u_char ipq_p; /* protocol of this fragment */
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u_short ipq_id; /* sequence id for reassembly */
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struct ipasfrag *ipq_next,*ipq_prev;
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/* to ip headers of fragments */
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struct in_addr ipq_src,ipq_dst;
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};
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/*
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* Ip header, when holding a fragment.
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*
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* Note: ipf_next must be at same offset as ipq_next above
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*/
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struct ipasfrag {
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#ifdef MIPSEL
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u_char ip_hl:4,
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ip_v:4;
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#endif
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#ifdef MIPSEB
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u_char ip_v:4,
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ip_hl:4;
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#endif
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u_char ipf_mff; /* copied from (ip_off&IP_MF) */
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short ip_len;
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u_short ip_id;
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short ip_off;
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u_char ip_ttl;
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u_char ip_p;
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u_short ip_sum;
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struct ipasfrag *ipf_next; /* next fragment */
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struct ipasfrag *ipf_prev; /* previous fragment */
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};
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struct ipstat {
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int ips_badsum; /* checksum bad */
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int ips_tooshort; /* packet too short */
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int ips_toosmall; /* not enough data */
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int ips_badhlen; /* ip header length < data size */
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int ips_badlen; /* ip length < ip header length */
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};
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