Squashed 'third_party/rawrtc/usrsctp/' content from commit bd1a92db3
Change-Id: If227cd6edd3243ac26044056b7427ae5bca71ef8
git-subtree-dir: third_party/rawrtc/usrsctp
git-subtree-split: bd1a92db338ba1e57453637959a127032bb566ff
diff --git a/programs/ekr_loop_offload.c b/programs/ekr_loop_offload.c
new file mode 100644
index 0000000..1296d0f
--- /dev/null
+++ b/programs/ekr_loop_offload.c
@@ -0,0 +1,559 @@
+/*
+ * Copyright (C) 2011-2013 Michael Tuexen
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef _WIN32
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#ifndef _WIN32
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <errno.h>
+#include <pthread.h>
+#include <unistd.h>
+#else
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
+#include <usrsctp.h>
+
+#define MAX_PACKET_SIZE (1<<16)
+#define LINE_LENGTH (1<<20)
+#define DISCARD_PPID 39
+
+#ifdef _WIN32
+static DWORD WINAPI
+#else
+static void *
+#endif
+handle_packets(void *arg)
+{
+#ifdef _WIN32
+ SOCKET *fdp;
+#else
+ int *fdp;
+#endif
+ char *dump_buffer;
+ struct sctp_common_header *hdr;
+ ssize_t length;
+ char buffer[MAX_PACKET_SIZE];
+ uint32_t received_crc32c, computed_crc32c;
+
+#ifdef _WIN32
+ fdp = (SOCKET *)arg;
+#else
+ fdp = (int *)arg;
+#endif
+ for (;;) {
+#if defined(__NetBSD__)
+ pthread_testcancel();
+#endif
+ length = recv(*fdp, buffer, MAX_PACKET_SIZE, 0);
+ if (length > 0) {
+ if ((dump_buffer = usrsctp_dumppacket(buffer, (size_t)length, SCTP_DUMP_INBOUND)) != NULL) {
+ //fprintf(stderr, "%s", dump_buffer);
+ usrsctp_freedumpbuffer(dump_buffer);
+ }
+ if ((size_t)length >= sizeof(struct sctp_common_header)) {
+ hdr = (struct sctp_common_header *)buffer;
+ received_crc32c = hdr->crc32c;
+ hdr->crc32c = htonl(0);
+ computed_crc32c = usrsctp_crc32c(buffer, (size_t)length);
+ hdr->crc32c = received_crc32c;
+ if (received_crc32c == computed_crc32c) {
+ usrsctp_conninput(fdp, buffer, (size_t)length, 0);
+ } else {
+ fprintf(stderr, "Wrong CRC32c: expected %08x received %08x\n",
+ ntohl(computed_crc32c), ntohl(received_crc32c));
+ }
+ } else {
+ fprintf(stderr, "Packet too short: length %zu", (size_t)length);
+ }
+ }
+ }
+#ifdef _WIN32
+ return 0;
+#else
+ return (NULL);
+#endif
+}
+
+static int
+conn_output(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df)
+{
+ char *dump_buffer;
+ struct sctp_common_header *hdr;
+#ifdef _WIN32
+ SOCKET *fdp;
+#else
+ int *fdp;
+#endif
+
+#ifdef _WIN32
+ fdp = (SOCKET *)addr;
+#else
+ fdp = (int *)addr;
+#endif
+ if (length >= sizeof(struct sctp_common_header)) {
+ hdr = (struct sctp_common_header *)buffer;
+ hdr->crc32c = usrsctp_crc32c(buffer, (size_t)length);
+ }
+ if ((dump_buffer = usrsctp_dumppacket(buffer, length, SCTP_DUMP_OUTBOUND)) != NULL) {
+ //fprintf(stderr, "%s", dump_buffer);
+ usrsctp_freedumpbuffer(dump_buffer);
+ }
+#ifdef _WIN32
+ if (send(*fdp, buffer, (int)length, 0) == SOCKET_ERROR) {
+ return (WSAGetLastError());
+#else
+ if (send(*fdp, buffer, length, 0) < 0) {
+ return (errno);
+#endif
+ } else {
+ return (0);
+ }
+}
+
+static int
+receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
+ size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
+{
+ printf("Message %p received on sock = %p.\n", data, (void *)sock);
+ if (data) {
+ if ((flags & MSG_NOTIFICATION) == 0) {
+ printf("Messsage of length %d received via %p:%u on stream %d with SSN %u and TSN %u, PPID %u, context %u, flags %x.\n",
+ (int)datalen,
+ addr.sconn.sconn_addr,
+ ntohs(addr.sconn.sconn_port),
+ rcv.rcv_sid,
+ rcv.rcv_ssn,
+ rcv.rcv_tsn,
+ ntohl(rcv.rcv_ppid),
+ rcv.rcv_context,
+ flags);
+ }
+ free(data);
+ } else {
+ usrsctp_deregister_address(ulp_info);
+ usrsctp_close(sock);
+ }
+ return (1);
+}
+
+#if 0
+static void
+print_addresses(struct socket *sock)
+{
+ int i, n;
+ struct sockaddr *addrs, *addr;
+
+ n = usrsctp_getladdrs(sock, 0, &addrs);
+ addr = addrs;
+ for (i = 0; i < n; i++) {
+ switch (addr->sa_family) {
+ case AF_INET:
+ {
+ struct sockaddr_in *sin;
+ char buf[INET_ADDRSTRLEN];
+ const char *name;
+
+ sin = (struct sockaddr_in *)addr;
+ name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
+ printf("%s:%d", name, ntohs(sin->sin_port));
+ break;
+ }
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6;
+ char buf[INET6_ADDRSTRLEN];
+ const char *name;
+
+ sin6 = (struct sockaddr_in6 *)addr;
+ name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
+ printf("%s:%d", name, ntohs(sin6->sin6_port));
+ break;
+ }
+ case AF_CONN:
+ {
+ struct sockaddr_conn *sconn;
+
+ sconn = (struct sockaddr_conn *)addr;
+ printf("%p:%d", sconn->sconn_addr, ntohs(sconn->sconn_port));
+ break;
+ }
+ default:
+ printf("Unknown family: %d", addr->sa_family);
+ break;
+ }
+ addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
+ if (i != n - 1) {
+ printf(",");
+ }
+ }
+ if (n > 0) {
+ usrsctp_freeladdrs(addrs);
+ }
+ printf("<->");
+ n = usrsctp_getpaddrs(sock, 0, &addrs);
+ addr = addrs;
+ for (i = 0; i < n; i++) {
+ switch (addr->sa_family) {
+ case AF_INET:
+ {
+ struct sockaddr_in *sin;
+ char buf[INET_ADDRSTRLEN];
+ const char *name;
+
+ sin = (struct sockaddr_in *)addr;
+ name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
+ printf("%s:%d", name, ntohs(sin->sin_port));
+ break;
+ }
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6;
+ char buf[INET6_ADDRSTRLEN];
+ const char *name;
+
+ sin6 = (struct sockaddr_in6 *)addr;
+ name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
+ printf("%s:%d", name, ntohs(sin6->sin6_port));
+ break;
+ }
+ case AF_CONN:
+ {
+ struct sockaddr_conn *sconn;
+
+ sconn = (struct sockaddr_conn *)addr;
+ printf("%p:%d", sconn->sconn_addr, ntohs(sconn->sconn_port));
+ break;
+ }
+ default:
+ printf("Unknown family: %d", addr->sa_family);
+ break;
+ }
+ addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
+ if (i != n - 1) {
+ printf(",");
+ }
+ }
+ if (n > 0) {
+ usrsctp_freepaddrs(addrs);
+ }
+ printf("\n");
+}
+#endif
+
+void
+debug_printf(const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ vprintf(format, ap);
+ va_end(ap);
+}
+
+int
+main(void)
+{
+ struct sockaddr_in sin_s, sin_c;
+ struct sockaddr_conn sconn;
+#ifdef _WIN32
+ SOCKET fd_c, fd_s;
+#else
+ int fd_c, fd_s;
+#endif
+ struct socket *s_c, *s_s, *s_l;
+#ifdef _WIN32
+ HANDLE tid_c, tid_s;
+#else
+ pthread_t tid_c, tid_s;
+#endif
+ int cur_buf_size, snd_buf_size, rcv_buf_size;
+ socklen_t opt_len;
+ struct sctp_sndinfo sndinfo;
+ char *line;
+#ifdef _WIN32
+ WSADATA wsaData;
+#endif
+
+#ifdef _WIN32
+ if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
+ printf("WSAStartup failed\n");
+ exit (EXIT_FAILURE);
+ }
+#endif
+ usrsctp_init(0, conn_output, debug_printf);
+ usrsctp_enable_crc32c_offload();
+ /* set up a connected UDP socket */
+#ifdef _WIN32
+ if ((fd_c = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
+ printf("socket() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+ if ((fd_s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
+ printf("socket() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+#else
+ if ((fd_c = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+ perror("socket");
+ exit(EXIT_FAILURE);
+ }
+ if ((fd_s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
+ perror("socket");
+ exit(EXIT_FAILURE);
+ }
+#endif
+ memset(&sin_c, 0, sizeof(struct sockaddr_in));
+ sin_c.sin_family = AF_INET;
+#ifdef HAVE_SIN_LEN
+ sin_c.sin_len = sizeof(struct sockaddr_in);
+#endif
+ sin_c.sin_port = htons(9899);
+ sin_c.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ memset(&sin_s, 0, sizeof(struct sockaddr_in));
+ sin_s.sin_family = AF_INET;
+#ifdef HAVE_SIN_LEN
+ sin_s.sin_len = sizeof(struct sockaddr_in);
+#endif
+ sin_s.sin_port = htons(9901);
+ sin_s.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+#ifdef _WIN32
+ if (bind(fd_c, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
+ printf("bind() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+ if (bind(fd_s, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
+ printf("bind() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+#else
+ if (bind(fd_c, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) < 0) {
+ perror("bind");
+ exit(EXIT_FAILURE);
+ }
+ if (bind(fd_s, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) < 0) {
+ perror("bind");
+ exit(EXIT_FAILURE);
+ }
+#endif
+#ifdef _WIN32
+ if (connect(fd_c, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
+ printf("connect() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+ if (connect(fd_s, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
+ printf("connect() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+#else
+ if (connect(fd_c, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+ if (connect(fd_s, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+#endif
+#ifdef _WIN32
+ tid_c = CreateThread(NULL, 0, &handle_packets, (void *)&fd_c, 0, NULL);
+ tid_s = CreateThread(NULL, 0, &handle_packets, (void *)&fd_s, 0, NULL);
+#else
+ if (pthread_create(&tid_c, NULL, &handle_packets, (void *)&fd_c)) {
+ perror("pthread_create tid_c");
+ exit(EXIT_FAILURE);
+ }
+
+ if (pthread_create(&tid_s, NULL, &handle_packets, (void *)&fd_s)) {
+ perror("pthread_create tid_s");
+ exit(EXIT_FAILURE);
+ };
+#endif
+#ifdef SCTP_DEBUG
+ usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_ALL);
+#endif
+ usrsctp_sysctl_set_sctp_ecn_enable(0);
+ usrsctp_register_address((void *)&fd_c);
+ usrsctp_register_address((void *)&fd_s);
+ if ((s_c = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, receive_cb, NULL, 0, &fd_c)) == NULL) {
+ perror("usrsctp_socket");
+ exit(EXIT_FAILURE);
+ }
+ opt_len = (socklen_t)sizeof(int);
+ cur_buf_size = 0;
+ if (usrsctp_getsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &cur_buf_size, &opt_len) < 0) {
+ perror("usrsctp_getsockopt");
+ exit(EXIT_FAILURE);
+ }
+ printf("Change send socket buffer size from %d ", cur_buf_size);
+ snd_buf_size = 1<<20; /* 1 MB */
+ if (usrsctp_setsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &snd_buf_size, sizeof(int)) < 0) {
+ perror("usrsctp_setsockopt");
+ exit(EXIT_FAILURE);
+ }
+ opt_len = (socklen_t)sizeof(int);
+ cur_buf_size = 0;
+ if (usrsctp_getsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &cur_buf_size, &opt_len) < 0) {
+ perror("usrsctp_getsockopt");
+ exit(EXIT_FAILURE);
+ }
+ printf("to %d.\n", cur_buf_size);
+ if ((s_l = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, receive_cb, NULL, 0, &fd_s)) == NULL) {
+ perror("usrsctp_socket");
+ exit(EXIT_FAILURE);
+ }
+ opt_len = (socklen_t)sizeof(int);
+ cur_buf_size = 0;
+ if (usrsctp_getsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &cur_buf_size, &opt_len) < 0) {
+ perror("usrsctp_getsockopt");
+ exit(EXIT_FAILURE);
+ }
+ printf("Change receive socket buffer size from %d ", cur_buf_size);
+ rcv_buf_size = 1<<16; /* 64 KB */
+ if (usrsctp_setsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &rcv_buf_size, sizeof(int)) < 0) {
+ perror("usrsctp_setsockopt");
+ exit(EXIT_FAILURE);
+ }
+ opt_len = (socklen_t)sizeof(int);
+ cur_buf_size = 0;
+ if (usrsctp_getsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &cur_buf_size, &opt_len) < 0) {
+ perror("usrsctp_getsockopt");
+ exit(EXIT_FAILURE);
+ }
+ printf("to %d.\n", cur_buf_size);
+ /* Bind the client side. */
+ memset(&sconn, 0, sizeof(struct sockaddr_conn));
+ sconn.sconn_family = AF_CONN;
+#ifdef HAVE_SCONN_LEN
+ sconn.sconn_len = sizeof(struct sockaddr_conn);
+#endif
+ sconn.sconn_port = htons(5001);
+ sconn.sconn_addr = &fd_c;
+ if (usrsctp_bind(s_c, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
+ perror("usrsctp_bind");
+ exit(EXIT_FAILURE);
+ }
+ /* Bind the server side. */
+ memset(&sconn, 0, sizeof(struct sockaddr_conn));
+ sconn.sconn_family = AF_CONN;
+#ifdef HAVE_SCONN_LEN
+ sconn.sconn_len = sizeof(struct sockaddr_conn);
+#endif
+ sconn.sconn_port = htons(5001);
+ sconn.sconn_addr = &fd_s;
+ if (usrsctp_bind(s_l, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
+ perror("usrsctp_bind");
+ exit(EXIT_FAILURE);
+ }
+ /* Make server side passive... */
+ if (usrsctp_listen(s_l, 1) < 0) {
+ perror("usrsctp_listen");
+ exit(EXIT_FAILURE);
+ }
+ /* Initiate the handshake */
+ memset(&sconn, 0, sizeof(struct sockaddr_conn));
+ sconn.sconn_family = AF_CONN;
+#ifdef HAVE_SCONN_LEN
+ sconn.sconn_len = sizeof(struct sockaddr_conn);
+#endif
+ sconn.sconn_port = htons(5001);
+ sconn.sconn_addr = &fd_c;
+ if (usrsctp_connect(s_c, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
+ perror("usrsctp_connect");
+ exit(EXIT_FAILURE);
+ }
+ if ((s_s = usrsctp_accept(s_l, NULL, NULL)) == NULL) {
+ perror("usrsctp_accept");
+ exit(EXIT_FAILURE);
+ }
+ usrsctp_close(s_l);
+ if ((line = malloc(LINE_LENGTH)) == NULL) {
+ exit(EXIT_FAILURE);
+ }
+ memset(line, 'A', LINE_LENGTH);
+ sndinfo.snd_sid = 1;
+ sndinfo.snd_flags = 0;
+ sndinfo.snd_ppid = htonl(DISCARD_PPID);
+ sndinfo.snd_context = 0;
+ sndinfo.snd_assoc_id = 0;
+ /* Send a 1 MB message */
+ if (usrsctp_sendv(s_c, line, LINE_LENGTH, NULL, 0, (void *)&sndinfo,
+ (socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
+ perror("usrsctp_sendv");
+ exit(EXIT_FAILURE);
+ }
+ free(line);
+ usrsctp_shutdown(s_c, SHUT_WR);
+
+ while (usrsctp_finish() != 0) {
+#ifdef _WIN32
+ Sleep(1000);
+#else
+ sleep(1);
+#endif
+ }
+#ifdef _WIN32
+ TerminateThread(tid_c, 0);
+ WaitForSingleObject(tid_c, INFINITE);
+ TerminateThread(tid_s, 0);
+ WaitForSingleObject(tid_s, INFINITE);
+ if (closesocket(fd_c) == SOCKET_ERROR) {
+ printf("closesocket() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+ if (closesocket(fd_s) == SOCKET_ERROR) {
+ printf("closesocket() failed with error: %d\n", WSAGetLastError());
+ exit(EXIT_FAILURE);
+ }
+ WSACleanup();
+#else
+ pthread_cancel(tid_c);
+ pthread_join(tid_c, NULL);
+ pthread_cancel(tid_s);
+ pthread_join(tid_s, NULL);
+ if (close(fd_c) < 0) {
+ perror("close");
+ exit(EXIT_FAILURE);
+ }
+ if (close(fd_s) < 0) {
+ perror("close");
+ exit(EXIT_FAILURE);
+ }
+#endif
+ return (0);
+}