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Reapply "Use original tcp_info struct"

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This reverts commit e96aeff679.
This commit is contained in:
ruti 2024-08-19 15:56:18 +03:00
parent ff65b9f780
commit 6d21aae7b5
2 changed files with 8 additions and 17 deletions
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14
desync.c
View file

@ -17,7 +17,6 @@
#else #else
#include <sys/sendfile.h> #include <sys/sendfile.h>
#include <linux/tcp.h> #include <linux/tcp.h>
#include <sys/syscall.h> #include <sys/syscall.h>
#define memfd_create(name, flags) syscall(__NR_memfd_create, name, flags) #define memfd_create(name, flags) syscall(__NR_memfd_create, name, flags)
@ -84,24 +83,25 @@ static inline void delay(long ms)
void wait_send(int sfd) void wait_send(int sfd)
{ {
for (int i = 0; params.wait_send && i < 500; i++) { for (int i = 0; params.wait_send && i < 500; i++) {
struct tcpi tcpi = {}; struct tcp_info tcpi = {};
socklen_t ts = sizeof(tcpi); socklen_t ts = sizeof(tcpi);
if (getsockopt(sfd, IPPROTO_TCP, if (getsockopt(sfd, IPPROTO_TCP,
TCP_INFO, (char *)&tcpi, &ts) < 0) { TCP_INFO, (char *)&tcpi, &ts) < 0) {
uniperror("getsockopt TCP_INFO"); perror("getsockopt TCP_INFO");
break; break;
} }
if (tcpi.state != 1) { if (tcpi.tcpi_state != 1) {
LOG(LOG_E, "state: %d\n", tcpi.state); LOG(LOG_E, "state: %d\n", tcpi.tcpi_state);
return; return;
} }
if (ts < sizeof(tcpi)) { size_t s = (char *)&tcpi.tcpi_notsent_bytes - (char *)&tcpi.tcpi_state;
if (ts < s) {
LOG(LOG_E, "tcpi_notsent_bytes not provided\n"); LOG(LOG_E, "tcpi_notsent_bytes not provided\n");
params.wait_send = 0; params.wait_send = 0;
break; break;
} }
if (tcpi.notsent_bytes == 0) { if (tcpi.tcpi_notsent_bytes == 0) {
return; return;
} }
LOG(LOG_S, "not sent after %d ms\n", i); LOG(LOG_S, "not sent after %d ms\n", i);

9
desync.h
View file

@ -18,13 +18,4 @@ int get_family(struct sockaddr *dst);
int setttl(int fd, int ttl, int family); int setttl(int fd, int ttl, int family);
struct tcpi {
uint8_t state;
uint8_t r[3];
uint32_t rr[5];
uint32_t unacked;
uint32_t rrr[29];
uint32_t notsent_bytes;
};
#endif #endif