70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
#ifndef _IP_REASSEMBLE_H
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#define _IP_REASSEMBLE_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "packet_priv.h"
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#include "log.h"
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#define IP_REASSEMBLE_DEBUG(format, ...) LOG_DEBUG("ip_reassembly", format, ##__VA_ARGS__)
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#define IP_REASSEMBLE_ERROR(format, ...) LOG_ERROR("ip_reassembly", format, ##__VA_ARGS__)
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struct ip_reassembly_options
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{
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uint8_t enable;
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uint32_t timeout; // range: [1, 60000]
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uint32_t bucket_entries; // range: [1, 256] (must be power of 2)
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uint32_t bucket_num; // range: [1, 4294967295]
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};
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struct ip_reassembly_stat
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{
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// IPv4 flow stat
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uint64_t ip4_flow_find;
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uint64_t ip4_flow_add;
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uint64_t ip4_flow_del;
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uint64_t ip4_flow_timeout;
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uint64_t ip4_flow_fail_no_space;
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uint64_t ip4_flow_fail_overlap;
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uint64_t ip4_flow_fail_many_frag;
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uint64_t ip4_flow_fail_invalid_length;
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uint64_t ip4_flow_bypass_dup_fist_frag;
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uint64_t ip4_flow_bypass_dup_last_frag;
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// IPv6 flow stat
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uint64_t ip6_flow_find;
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uint64_t ip6_flow_add;
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uint64_t ip6_flow_del;
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uint64_t ip6_flow_timeout;
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uint64_t ip6_flow_fail_no_space;
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uint64_t ip6_flow_fail_overlap;
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uint64_t ip6_flow_fail_many_frag;
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uint64_t ip6_flow_fail_invalid_length;
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uint64_t ip6_flow_bypass_dup_fist_frag;
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uint64_t ip6_flow_bypass_dup_last_frag;
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};
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struct ip_reassembly *ip_reassembly_new(const struct ip_reassembly_options *opts);
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void ip_reassembly_free(struct ip_reassembly *assy);
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void ip_reassembly_expire(struct ip_reassembly *assy, uint64_t now);
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struct ip_reassembly_stat *ip_reassembly_stat(struct ip_reassembly *assy);
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/*
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* Returns the reassembled packet, or NULL if the packet is not reassembled
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* The returned packet should be freed by calling the packet_free() function
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*/
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struct packet *ip_reassembly_packet(struct ip_reassembly *assy, const struct packet *pkt, uint64_t now);
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struct packet *ipv4_reassembly_packet(struct ip_reassembly *assy, const struct packet *pkt, uint64_t now);
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struct packet *ipv6_reassembly_packet(struct ip_reassembly *assy, const struct packet *pkt, uint64_t now);
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#ifdef __cplusplus
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}
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#endif
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#endif
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