Import from old repository commit 61ef2b42a9c4ba8e1600f15bb0236765edc2ad45.v0.90.0

1 files changed, 186 insertions, 0 deletions

diff --git a/lib/vconn-tcp.c b/lib/vconn-tcp.c
new file mode 100644
index 00000000..081ac26d
--- /dev/null
+++ b/lib/vconn-tcp.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2008, 2009 Nicira Networks.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+#include "vconn.h"
+#include <errno.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "packets.h"
+#include "socket-util.h"
+#include "util.h"
+#include "openflow/openflow.h"
+#include "vconn-provider.h"
+#include "vconn-stream.h"
+
+#include "vlog.h"
+#define THIS_MODULE VLM_vconn_tcp
+
+/* Active TCP. */
+
+static int
+new_tcp_vconn(const char *name, int fd, int connect_status,
+              const struct sockaddr_in *sin, struct vconn **vconnp)
+{
+    int on = 1;
+    int retval;
+
+    retval = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof on);
+    if (retval) {
+        VLOG_ERR("%s: setsockopt(TCP_NODELAY): %s", name, strerror(errno));
+        close(fd);
+        return errno;
+    }
+
+    return new_stream_vconn(name, fd, connect_status, sin->sin_addr.s_addr,
+                            true, vconnp);
+}
+
+static int
+tcp_open(const char *name, char *suffix, struct vconn **vconnp)
+{
+    char *save_ptr;
+    const char *host_name;
+    const char *port_string;
+    struct sockaddr_in sin;
+    int retval;
+    int fd;
+
+    /* Glibc 2.7 has a bug in strtok_r when compiling with optimization that
+     * can cause segfaults here:
+     * http://sources.redhat.com/bugzilla/show_bug.cgi?id=5614.
+     * Using "::" instead of the obvious ":" works around it. */
+    host_name = strtok_r(suffix, "::", &save_ptr);
+    port_string = strtok_r(NULL, "::", &save_ptr);
+    if (!host_name) {
+        ovs_error(0, "%s: bad peer name format", name);
+        return EAFNOSUPPORT;
+    }
+
+    memset(&sin, 0, sizeof sin);
+    sin.sin_family = AF_INET;
+    if (lookup_ip(host_name, &sin.sin_addr)) {
+        return ENOENT;
+    }
+    sin.sin_port = htons(port_string ? atoi(port_string) : OFP_TCP_PORT);
+
+    fd = socket(AF_INET, SOCK_STREAM, 0);
+    if (fd < 0) {
+        VLOG_ERR("%s: socket: %s", name, strerror(errno));
+        return errno;
+    }
+
+    retval = set_nonblocking(fd);
+    if (retval) {
+        close(fd);
+        return retval;
+    }
+
+    retval = connect(fd, (struct sockaddr *) &sin, sizeof sin);
+    if (retval < 0) {
+        if (errno == EINPROGRESS) {
+            return new_tcp_vconn(name, fd, EAGAIN, &sin, vconnp);
+        } else {
+            int error = errno;
+            VLOG_ERR("%s: connect: %s", name, strerror(error));
+            close(fd);
+            return error;
+        }
+    } else {
+        return new_tcp_vconn(name, fd, 0, &sin, vconnp);
+    }
+}
+
+struct vconn_class tcp_vconn_class = {
+    "tcp",                      /* name */
+    tcp_open,                   /* open */
+    NULL,                       /* close */
+    NULL,                       /* connect */
+    NULL,                       /* recv */
+    NULL,                       /* send */
+    NULL,                       /* wait */
+};
+
+/* Passive TCP. */
+
+static int ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len,
+                       struct vconn **vconnp);
+
+static int
+ptcp_open(const char *name, char *suffix, struct pvconn **pvconnp)
+{
+    struct sockaddr_in sin;
+    int retval;
+    int fd;
+    unsigned int yes  = 1;
+
+    fd = socket(AF_INET, SOCK_STREAM, 0);
+    if (fd < 0) {
+        VLOG_ERR("%s: socket: %s", name, strerror(errno));
+        return errno;
+    }
+
+    if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes) < 0) {
+        VLOG_ERR("%s: setsockopt(SO_REUSEADDR): %s", name, strerror(errno));
+        return errno;
+    }
+
+    memset(&sin, 0, sizeof sin);
+    sin.sin_family = AF_INET;
+    sin.sin_addr.s_addr = htonl(INADDR_ANY);
+    sin.sin_port = htons(atoi(suffix) ? atoi(suffix) : OFP_TCP_PORT);
+    retval = bind(fd, (struct sockaddr *) &sin, sizeof sin);
+    if (retval < 0) {
+        int error = errno;
+        VLOG_ERR("%s: bind: %s", name, strerror(error));
+        close(fd);
+        return error;
+    }
+
+    return new_pstream_pvconn("ptcp", fd, ptcp_accept, pvconnp);
+}
+
+static int
+ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len,
+            struct vconn **vconnp)
+{
+    const struct sockaddr_in *sin = (const struct sockaddr_in *) sa;
+    char name[128];
+
+    if (sa_len == sizeof(struct sockaddr_in) && sin->sin_family == AF_INET) {
+        sprintf(name, "tcp:"IP_FMT, IP_ARGS(&sin->sin_addr));
+        if (sin->sin_port != htons(OFP_TCP_PORT)) {
+            sprintf(strchr(name, '\0'), ":%"PRIu16, ntohs(sin->sin_port));
+        }
+    } else {
+        strcpy(name, "tcp");
+    }
+    return new_tcp_vconn(name, fd, 0, sin, vconnp);
+}
+
+struct pvconn_class ptcp_pvconn_class = {
+    "ptcp",
+    ptcp_open,
+    NULL,
+    NULL,
+    NULL
+};
+