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https://passt.top/passt
synced 2025-08-15 03:03:14 +02:00
passt: Fix build with gcc 7, use std=c99, enable some more Clang checkers
Unions and structs, you all have names now. Take the chance to enable bugprone-reserved-identifier, cert-dcl37-c, and cert-dcl51-cpp checkers in clang-tidy. Provide a ffsl() weak declaration using gcc built-in. Start reordering includes, but that's not enough for the llvm-include-order checker yet. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio
parent
6257a2752e
commit
dd942eaa48
24 changed files with 300 additions and 284 deletions
172
tcp.c
172
tcp.c
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@ -307,7 +307,6 @@
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* #syscalls pipe pipe2
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*/
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#define _GNU_SOURCE
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#include <sched.h>
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#include <fcntl.h>
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#include <stdio.h>
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@ -317,6 +316,7 @@
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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@ -326,11 +326,11 @@
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/tcp.h>
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#include <time.h>
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#include <linux/ipv6.h>
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#include <linux/tcp.h> /* For struct tcp_info */
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#include "checksum.h"
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#include "util.h"
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#include "passt.h"
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@ -1019,14 +1019,14 @@ static void tcp_sock6_iov_init(void)
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* tcp_opt_get() - Get option, and value if any, from TCP header
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* @th: Pointer to TCP header
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* @len: Length of buffer, including TCP header
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* @__type: Option type to look for
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* @__optlen: Optional, filled with option length if passed
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* @__value: Optional, set to start of option value if passed
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* @type: Option type to look for
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* @optlen_set: Optional, filled with option length if passed
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* @value_set: Optional, set to start of option value if passed
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*
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* Return: Option value, meaningful for up to 4 bytes, -1 if not found
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*/
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static int tcp_opt_get(struct tcphdr *th, size_t len, uint8_t __type,
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uint8_t *__optlen, char **__value)
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static int tcp_opt_get(struct tcphdr *th, size_t len, uint8_t type_search,
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uint8_t *optlen_set, char **value_set)
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{
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uint8_t type, optlen;
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char *p;
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@ -1049,13 +1049,13 @@ static int tcp_opt_get(struct tcphdr *th, size_t len, uint8_t __type,
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optlen = *(p++) - 2;
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len -= 2;
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if (type != __type)
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if (type != type_search)
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break;
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if (__optlen)
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*__optlen = optlen;
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if (__value)
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*__value = p;
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if (optlen_set)
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*optlen_set = optlen;
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if (value_set)
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*value_set = p;
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switch (optlen) {
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case 0:
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@ -1249,9 +1249,9 @@ static struct tcp_tap_conn *tcp_hash_lookup(struct ctx *c, int af, void *addr,
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static void tcp_tap_epoll_mask(struct ctx *c, struct tcp_tap_conn *conn,
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uint32_t events)
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{
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union epoll_ref ref = { .proto = IPPROTO_TCP, .s = conn->sock,
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.tcp.index = conn - tt,
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.tcp.v6 = CONN_V6(conn) };
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union epoll_ref ref = { .r.proto = IPPROTO_TCP, .r.s = conn->sock,
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.r.p.tcp.tcp.index = conn - tt,
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.r.p.tcp.tcp.v6 = CONN_V6(conn) };
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struct epoll_event ev = { .data.u64 = ref.u64, .events = events };
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if (conn->events == events)
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@ -1547,7 +1547,7 @@ static int tcp_update_seqack_wnd(struct ctx *c, struct tcp_tap_conn *conn,
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uint32_t prev_ack_to_tap = conn->seq_ack_to_tap;
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uint32_t prev_wnd_to_tap = conn->wnd_to_tap;
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socklen_t sl = sizeof(*info);
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struct tcp_info __info;
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struct tcp_info info_new;
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int s = conn->sock;
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if (conn->state > ESTABLISHED || (flags & (DUP_ACK | FORCE_ACK)) ||
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@ -1556,7 +1556,7 @@ static int tcp_update_seqack_wnd(struct ctx *c, struct tcp_tap_conn *conn,
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conn->seq_ack_to_tap = conn->seq_from_tap;
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} else if (conn->seq_ack_to_tap != conn->seq_from_tap) {
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if (!info) {
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info = &__info;
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info = &info_new;
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if (getsockopt(s, SOL_TCP, TCP_INFO, info, &sl))
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return 0;
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}
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@ -1578,7 +1578,7 @@ static int tcp_update_seqack_wnd(struct ctx *c, struct tcp_tap_conn *conn,
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if (conn->wnd_to_tap > WINDOW_DEFAULT)
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goto out;
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info = &__info;
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info = &info_new;
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if (getsockopt(s, SOL_TCP, TCP_INFO, info, &sl))
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goto out;
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}
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@ -1876,6 +1876,7 @@ static void tcp_conn_from_tap(struct ctx *c, int af, void *addr,
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struct tcphdr *th, size_t len,
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struct timespec *now)
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{
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union epoll_ref ref = { .r.proto = IPPROTO_TCP };
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struct sockaddr_in addr4 = {
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.sin_family = AF_INET,
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.sin_port = th->dest,
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@ -1886,7 +1887,6 @@ static void tcp_conn_from_tap(struct ctx *c, int af, void *addr,
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.sin6_port = th->dest,
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.sin6_addr = *(struct in6_addr *)addr,
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};
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union epoll_ref ref = { .proto = IPPROTO_TCP };
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int i, s, *sock_pool_p, mss;
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const struct sockaddr *sa;
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struct tcp_tap_conn *conn;
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@ -1901,15 +1901,16 @@ static void tcp_conn_from_tap(struct ctx *c, int af, void *addr,
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sock_pool_p = &init_sock_pool6[i];
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else
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sock_pool_p = &init_sock_pool4[i];
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if ((ref.s = s = *sock_pool_p) >= 0) {
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if ((ref.r.s = s = *sock_pool_p) >= 0) {
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*sock_pool_p = -1;
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break;
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}
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}
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if (s < 0)
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ref.s = s = socket(af, SOCK_STREAM | SOCK_NONBLOCK,
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IPPROTO_TCP);
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if (s < 0) {
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s = socket(af, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP);
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ref.r.s = s;
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}
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if (s < 0)
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return;
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@ -2016,7 +2017,7 @@ static void tcp_conn_from_tap(struct ctx *c, int af, void *addr,
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}
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conn->events = ev.events;
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ref.tcp.index = conn - tt;
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ref.r.p.tcp.tcp.index = conn - tt;
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ev.data.u64 = ref.u64;
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epoll_ctl(c->epollfd, EPOLL_CTL_ADD, s, &ev);
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}
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@ -2029,10 +2030,12 @@ static void tcp_conn_from_tap(struct ctx *c, int af, void *addr,
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static void tcp_table_splice_compact(struct ctx *c,
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struct tcp_splice_conn *hole)
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{
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union epoll_ref ref_from = { .proto = IPPROTO_TCP, .tcp.splice = 1,
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.tcp.index = hole - ts };
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union epoll_ref ref_to = { .proto = IPPROTO_TCP, .tcp.splice = 1,
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.tcp.index = hole - ts };
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union epoll_ref ref_from = { .r.proto = IPPROTO_TCP,
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.r.p.tcp.tcp.splice = 1,
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.r.p.tcp.tcp.index = hole - ts };
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union epoll_ref ref_to = { .r.proto = IPPROTO_TCP,
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.r.p.tcp.tcp.splice = 1,
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.r.p.tcp.tcp.index = hole - ts };
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struct tcp_splice_conn *move;
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struct epoll_event ev_from;
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struct epoll_event ev_to;
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@ -2057,10 +2060,10 @@ static void tcp_table_splice_compact(struct ctx *c,
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move->state = CLOSED;
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move = hole;
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ref_from.s = move->from;
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ref_from.tcp.v6 = move->v6;
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ref_to.s = move->to;
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ref_to.tcp.v6 = move->v6;
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ref_from.r.s = move->from;
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ref_from.r.p.tcp.tcp.v6 = move->v6;
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ref_to.r.s = move->to;
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ref_to.r.p.tcp.tcp.v6 = move->v6;
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if (move->state == SPLICE_ACCEPTED) {
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ev_from.events = ev_to.events = 0;
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@ -2704,12 +2707,12 @@ static void tcp_connect_finish(struct ctx *c, struct tcp_tap_conn *conn,
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static void tcp_splice_connect_finish(struct ctx *c,
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struct tcp_splice_conn *conn, int v6)
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{
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union epoll_ref ref_from = { .proto = IPPROTO_TCP, .s = conn->from,
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.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_to = { .proto = IPPROTO_TCP, .s = conn->to,
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.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_from = { .r.proto = IPPROTO_TCP, .r.s = conn->from,
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.r.p.tcp.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_to = { .r.proto = IPPROTO_TCP, .r.s = conn->to,
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.r.p.tcp.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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struct epoll_event ev_from, ev_to;
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int i;
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@ -2764,12 +2767,13 @@ static int tcp_splice_connect(struct ctx *c, struct tcp_splice_conn *conn,
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int sock_conn = (s >= 0) ? s : socket(v6 ? AF_INET6 : AF_INET,
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SOCK_STREAM | SOCK_NONBLOCK,
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IPPROTO_TCP);
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union epoll_ref ref_accept = { .proto = IPPROTO_TCP, .s = conn->from,
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.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_conn = { .proto = IPPROTO_TCP, .s = sock_conn,
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.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_accept = { .r.proto = IPPROTO_TCP,
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.r.s = conn->from,
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.r.p.tcp.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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union epoll_ref ref_conn = { .r.proto = IPPROTO_TCP, .r.s = sock_conn,
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.r.p.tcp.tcp = { .splice = 1, .v6 = v6,
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.index = conn - ts } };
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struct epoll_event ev_accept = { .data.u64 = ref_accept.u64 };
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struct epoll_event ev_conn = { .data.u64 = ref_conn.u64 };
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struct sockaddr_in6 addr6 = {
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@ -2901,8 +2905,8 @@ static int tcp_splice_new(struct ctx *c, struct tcp_splice_conn *conn,
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static void tcp_conn_from_sock(struct ctx *c, union epoll_ref ref,
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struct timespec *now)
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{
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union epoll_ref ref_conn = { .proto = IPPROTO_TCP,
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.tcp.v6 = ref.tcp.v6 };
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union epoll_ref ref_conn = { .r.proto = IPPROTO_TCP,
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.r.p.tcp.tcp.v6 = ref.r.p.tcp.tcp.v6 };
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struct sockaddr_storage sa;
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struct tcp_tap_conn *conn;
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struct epoll_event ev;
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@ -2913,15 +2917,15 @@ static void tcp_conn_from_sock(struct ctx *c, union epoll_ref ref,
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return;
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sl = sizeof(sa);
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s = accept4(ref.s, (struct sockaddr *)&sa, &sl, SOCK_NONBLOCK);
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s = accept4(ref.r.s, (struct sockaddr *)&sa, &sl, SOCK_NONBLOCK);
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if (s < 0)
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return;
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conn = &tt[c->tcp.tap_conn_count++];
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ref_conn.tcp.index = conn - tt;
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ref_conn.s = conn->sock = s;
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ref_conn.r.p.tcp.tcp.index = conn - tt;
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ref_conn.r.s = conn->sock = s;
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if (ref.tcp.v6) {
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if (ref.r.p.tcp.tcp.v6) {
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struct sockaddr_in6 sa6;
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memcpy(&sa6, &sa, sizeof(sa6));
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@ -2942,7 +2946,7 @@ static void tcp_conn_from_sock(struct ctx *c, union epoll_ref ref,
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memcpy(&conn->a.a6, &sa6.sin6_addr, sizeof(conn->a.a6));
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conn->sock_port = ntohs(sa6.sin6_port);
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conn->tap_port = ref.tcp.index;
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conn->tap_port = ref.r.p.tcp.tcp.index;
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conn->seq_to_tap = tcp_seq_init(c, AF_INET6, &sa6.sin6_addr,
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conn->sock_port,
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@ -2968,7 +2972,7 @@ static void tcp_conn_from_sock(struct ctx *c, union epoll_ref ref,
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memcpy(&conn->a.a4.a, &s_addr, sizeof(conn->a.a4.a));
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conn->sock_port = ntohs(sa4.sin_port);
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conn->tap_port = ref.tcp.index;
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conn->tap_port = ref.r.p.tcp.tcp.index;
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conn->seq_to_tap = tcp_seq_init(c, AF_INET, &s_addr,
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conn->sock_port,
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@ -3014,13 +3018,13 @@ void tcp_sock_handler_splice(struct ctx *c, union epoll_ref ref,
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struct tcp_splice_conn *conn;
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struct epoll_event ev;
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if (ref.tcp.listen) {
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if (ref.r.p.tcp.tcp.listen) {
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int s, one = 1;
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if (c->tcp.splice_conn_count >= MAX_SPLICE_CONNS)
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return;
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if ((s = accept4(ref.s, NULL, NULL, SOCK_NONBLOCK)) < 0)
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if ((s = accept4(ref.r.s, NULL, NULL, SOCK_NONBLOCK)) < 0)
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return;
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setsockopt(s, SOL_TCP, TCP_QUICKACK, &one, sizeof(one));
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@ -3029,13 +3033,14 @@ void tcp_sock_handler_splice(struct ctx *c, union epoll_ref ref,
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conn->from = s;
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tcp_splice_state(conn, SPLICE_ACCEPTED);
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if (tcp_splice_new(c, conn, ref.tcp.v6, ref.tcp.index))
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if (tcp_splice_new(c, conn, ref.r.p.tcp.tcp.v6,
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ref.r.p.tcp.tcp.index))
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tcp_splice_destroy(c, conn);
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return;
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}
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conn = &ts[ref.tcp.index];
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conn = &ts[ref.r.p.tcp.tcp.index];
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if (events & EPOLLERR)
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goto close;
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@ -3050,12 +3055,12 @@ void tcp_sock_handler_splice(struct ctx *c, union epoll_ref ref,
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};
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if (conn->state == SPLICE_CONNECT)
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tcp_splice_connect_finish(c, conn, ref.tcp.v6);
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tcp_splice_connect_finish(c, conn, ref.r.p.tcp.tcp.v6);
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else if (conn->state == SPLICE_ESTABLISHED)
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epoll_ctl(c->epollfd, EPOLL_CTL_MOD, ref.s, &ev);
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epoll_ctl(c->epollfd, EPOLL_CTL_MOD, ref.r.s, &ev);
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move_to = ref.s;
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if (ref.s == conn->to) {
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move_to = ref.r.s;
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if (ref.r.s == conn->to) {
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move_from = conn->from;
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pipes = conn->pipe_from_to;
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} else {
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@ -3063,8 +3068,8 @@ void tcp_sock_handler_splice(struct ctx *c, union epoll_ref ref,
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pipes = conn->pipe_to_from;
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}
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} else {
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move_from = ref.s;
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if (ref.s == conn->from) {
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move_from = ref.r.s;
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if (ref.r.s == conn->from) {
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move_to = conn->to;
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pipes = conn->pipe_from_to;
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} else {
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@ -3074,7 +3079,7 @@ void tcp_sock_handler_splice(struct ctx *c, union epoll_ref ref,
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}
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if (events & EPOLLRDHUP) {
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if (ref.s == conn->from) {
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if (ref.r.s == conn->from) {
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if (conn->state == SPLICE_ESTABLISHED)
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tcp_splice_state(conn, SPLICE_FIN_FROM);
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else if (conn->state == SPLICE_FIN_TO)
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@ -3172,7 +3177,7 @@ eintr:
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goto retry;
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ev.events = EPOLLIN | EPOLLOUT | EPOLLRDHUP;
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ref.s = move_to;
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ref.r.s = move_to;
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ev.data.u64 = ref.u64,
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epoll_ctl(c->epollfd, EPOLL_CTL_MOD, move_to, &ev);
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break;
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@ -3199,7 +3204,7 @@ eintr:
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conn->from_fin_sent = 1;
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ev.events = 0;
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ref.s = move_from;
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ref.r.s = move_from;
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ev.data.u64 = ref.u64,
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epoll_ctl(c->epollfd, EPOLL_CTL_MOD,
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move_from, &ev);
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@ -3215,7 +3220,7 @@ eintr:
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conn->to_fin_sent = 1;
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ev.events = 0;
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ref.s = move_from;
|
||||
ref.r.s = move_from;
|
||||
ev.data.u64 = ref.u64,
|
||||
epoll_ctl(c->epollfd, EPOLL_CTL_MOD,
|
||||
move_from, &ev);
|
||||
|
|
@ -3258,17 +3263,17 @@ void tcp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events,
|
|||
{
|
||||
struct tcp_tap_conn *conn;
|
||||
|
||||
if (ref.tcp.splice) {
|
||||
if (ref.r.p.tcp.tcp.splice) {
|
||||
tcp_sock_handler_splice(c, ref, events);
|
||||
return;
|
||||
}
|
||||
|
||||
if (ref.tcp.listen) {
|
||||
if (ref.r.p.tcp.tcp.listen) {
|
||||
tcp_conn_from_sock(c, ref, now);
|
||||
return;
|
||||
}
|
||||
|
||||
conn = &tt[ref.tcp.index];
|
||||
conn = &tt[ref.r.p.tcp.tcp.index];
|
||||
|
||||
conn->ts_sock_act = *now;
|
||||
|
||||
|
|
@ -3382,18 +3387,21 @@ smaller:
|
|||
*/
|
||||
static void tcp_sock_init_one(struct ctx *c, int ns, in_port_t port)
|
||||
{
|
||||
union tcp_epoll_ref tref = { .listen = 1 };
|
||||
union tcp_epoll_ref tref = { .tcp.listen = 1 };
|
||||
int s;
|
||||
|
||||
if (ns)
|
||||
tref.index = (in_port_t)(port + tcp_port_delta_to_init[port]);
|
||||
else
|
||||
tref.index = (in_port_t)(port + tcp_port_delta_to_tap[port]);
|
||||
if (ns) {
|
||||
tref.tcp.index = (in_port_t)(port +
|
||||
tcp_port_delta_to_init[port]);
|
||||
} else {
|
||||
tref.tcp.index = (in_port_t)(port +
|
||||
tcp_port_delta_to_tap[port]);
|
||||
}
|
||||
|
||||
if (c->v4) {
|
||||
tref.v6 = 0;
|
||||
tref.tcp.v6 = 0;
|
||||
|
||||
tref.splice = 0;
|
||||
tref.tcp.splice = 0;
|
||||
if (!ns) {
|
||||
s = sock_l4(c, AF_INET, IPPROTO_TCP, port,
|
||||
c->mode == MODE_PASTA ? BIND_EXT : BIND_ANY,
|
||||
|
|
@ -3408,7 +3416,7 @@ static void tcp_sock_init_one(struct ctx *c, int ns, in_port_t port)
|
|||
}
|
||||
|
||||
if (c->mode == MODE_PASTA) {
|
||||
tref.splice = 1;
|
||||
tref.tcp.splice = 1;
|
||||
s = sock_l4(c, AF_INET, IPPROTO_TCP, port,
|
||||
BIND_LOOPBACK, tref.u32);
|
||||
if (s >= 0)
|
||||
|
|
@ -3426,9 +3434,9 @@ static void tcp_sock_init_one(struct ctx *c, int ns, in_port_t port)
|
|||
}
|
||||
|
||||
if (c->v6) {
|
||||
tref.v6 = 1;
|
||||
tref.tcp.v6 = 1;
|
||||
|
||||
tref.splice = 0;
|
||||
tref.tcp.splice = 0;
|
||||
if (!ns) {
|
||||
s = sock_l4(c, AF_INET6, IPPROTO_TCP, port,
|
||||
c->mode == MODE_PASTA ? BIND_EXT : BIND_ANY,
|
||||
|
|
@ -3443,7 +3451,7 @@ static void tcp_sock_init_one(struct ctx *c, int ns, in_port_t port)
|
|||
}
|
||||
|
||||
if (c->mode == MODE_PASTA) {
|
||||
tref.splice = 1;
|
||||
tref.tcp.splice = 1;
|
||||
s = sock_l4(c, AF_INET6, IPPROTO_TCP, port,
|
||||
BIND_LOOPBACK, tref.u32);
|
||||
if (s >= 0)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue