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nfqws: packet delay support

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This commit is contained in:
bol-van
2024-04-20 20:59:45 +03:00
parent 2e6ddc4756
commit 51c0d1ce3c
26 changed files with 975 additions and 527 deletions
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22
nfq/darkmagic.h
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@@ -11,6 +11,8 @@
#include <netinet/in.h>
#include <sys/socket.h>
#include "packet_queue.h"
#ifndef IPPROTO_DIVERT
#define IPPROTO_DIVERT 258
#endif
@@ -39,6 +41,12 @@ uint32_t net16_add(uint16_t netorder_value, uint16_t cpuorder_increment);
#define SCALE_NONE ((uint8_t)-1)
#define VERDICT_PASS 0
#define VERDICT_MODIFY 1
#define VERDICT_DROP 2
#define VERDICT_MASK 3
#define VERDICT_NOCSUM 4
// seq and wsize have network byte order
bool prepare_tcp_segment4(
const struct sockaddr_in *src, const struct sockaddr_in *dst,
@@ -136,6 +144,9 @@ bool tcp_has_fastopen(const struct tcphdr *tcp);
// auto creates internal socket and uses it for subsequent calls
bool rawsend(const struct sockaddr* dst,uint32_t fwmark,const char *ifout,const void *data,size_t len);
bool rawsend_rp(const struct rawpacket *rp);
// return trues if all packets were send successfully
bool rawsend_queue(struct rawpacket_tailhead *q);
// should pre-do it if dropping privileges. otherwise its not necessary
bool rawsend_preinit(bool bind_fix4, bool bind_fix6);
// cleans up socket autocreated by rawsend
@@ -158,6 +169,14 @@ bool proto_check_tcp(const uint8_t *data, size_t len);
void proto_skip_tcp(uint8_t **data, size_t *len);
bool proto_check_udp(const uint8_t *data, size_t len);
void proto_skip_udp(uint8_t **data, size_t *len);
void proto_dissect_l3l4(
uint8_t *data, size_t len,
struct ip **ip, struct ip6_hdr **ip6,
uint8_t *proto,
struct tcphdr **tcp,
struct udphdr **udp,
size_t *transport_len,
uint8_t **data_payload, size_t *len_payload);
bool tcp_synack_segment(const struct tcphdr *tcphdr);
bool tcp_syn_segment(const struct tcphdr *tcphdr);
@@ -177,3 +196,6 @@ typedef struct
#define AUTOTTL_SET_DEFAULT(a) {(a).delta=AUTOTTL_DEFAULT_DELTA; (a).min=AUTOTTL_DEFAULT_MIN; (a).max=AUTOTTL_DEFAULT_MAX;}
uint8_t autottl_guess(uint8_t ttl, const autottl *attl);
void verdict_tcp_csum_fix(uint8_t verdict, struct tcphdr *tcphdr, size_t transport_len, struct ip *ip, struct ip6_hdr *ip6hdr);
void verdict_udp_csum_fix(uint8_t verdict, struct udphdr *udphdr, size_t transport_len, struct ip *ip, struct ip6_hdr *ip6hdr);