cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / vsockmon.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/vsockmon.h b/i686-linux-gnu-4.7/usr/include/linux/vsockmon.h
new file mode 100644 (file)
index 0000000..4fc937c
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/vsockmon.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _VSOCKMON_H
+#define _VSOCKMON_H
+
+#include <linux/virtio_vsock.h>
+
+/*
+ * vsockmon is the AF_VSOCK packet capture device.  Packets captured have the
+ * following layout:
+ *
+ *   +-----------------------------------+
+ *   |           vsockmon header         |
+ *   |      (struct af_vsockmon_hdr)     |
+ *   +-----------------------------------+
+ *   |          transport header         |
+ *   | (af_vsockmon_hdr->len bytes long) |
+ *   +-----------------------------------+
+ *   |              payload              |
+ *   |       (until end of packet)       |
+ *   +-----------------------------------+
+ *
+ * The vsockmon header is a transport-independent description of the packet.
+ * It duplicates some of the information from the transport header so that
+ * no transport-specific knowledge is necessary to process packets.
+ *
+ * The transport header is useful for low-level transport-specific packet
+ * analysis.  Transport type is given in af_vsockmon_hdr->transport and
+ * transport header length is given in af_vsockmon_hdr->len.
+ *
+ * If af_vsockmon_hdr->op is AF_VSOCK_OP_PAYLOAD then the payload follows the
+ * transport header.  Other ops do not have a payload.
+ */
+
+struct af_vsockmon_hdr {
+       __le64 src_cid;
+       __le64 dst_cid;
+       __le32 src_port;
+       __le32 dst_port;
+       __le16 op;                      /* enum af_vsockmon_op */
+       __le16 transport;               /* enum af_vsockmon_transport */
+       __le16 len;                     /* Transport header length */
+       __u8 reserved[2];
+};
+
+enum af_vsockmon_op {
+       AF_VSOCK_OP_UNKNOWN = 0,
+       AF_VSOCK_OP_CONNECT = 1,
+       AF_VSOCK_OP_DISCONNECT = 2,
+       AF_VSOCK_OP_CONTROL = 3,
+       AF_VSOCK_OP_PAYLOAD = 4,
+};
+
+enum af_vsockmon_transport {
+       AF_VSOCK_TRANSPORT_UNKNOWN = 0,
+       AF_VSOCK_TRANSPORT_NO_INFO = 1, /* No transport information */
+
+       /* Transport header type: struct virtio_vsock_hdr */
+       AF_VSOCK_TRANSPORT_VIRTIO = 2,
+};
+
+#endif