ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/include/net/af_vsock.h b/marvell/linux/include/net/af_vsock.h
new file mode 100644
index 0000000..4206dc6
--- /dev/null
+++ b/marvell/linux/include/net/af_vsock.h
@@ -0,0 +1,215 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * VMware vSockets Driver
+ *
+ * Copyright (C) 2007-2013 VMware, Inc. All rights reserved.
+ */
+
+#ifndef __AF_VSOCK_H__
+#define __AF_VSOCK_H__
+
+#include <linux/kernel.h>
+#include <linux/workqueue.h>
+#include <uapi/linux/vm_sockets.h>
+
+#include "vsock_addr.h"
+
+#define LAST_RESERVED_PORT 1023
+
+#define VSOCK_HASH_SIZE 251
+extern struct list_head vsock_bind_table[VSOCK_HASH_SIZE + 1];
+extern struct list_head vsock_connected_table[VSOCK_HASH_SIZE];
+extern spinlock_t vsock_table_lock;
+
+#define vsock_sk(__sk) ((struct vsock_sock *)__sk)
+#define sk_vsock(__vsk) (&(__vsk)->sk)
+
+struct vsock_sock {
+ /* sk must be the first member. */
+ struct sock sk;
+ const struct vsock_transport *transport;
+ struct sockaddr_vm local_addr;
+ struct sockaddr_vm remote_addr;
+ /* Links for the global tables of bound and connected sockets. */
+ struct list_head bound_table;
+ struct list_head connected_table;
+ /* Accessed without the socket lock held. This means it can never be
+ * modified outsided of socket create or destruct.
+ */
+ bool trusted;
+ bool cached_peer_allow_dgram; /* Dgram communication allowed to
+ * cached peer?
+ */
+ u32 cached_peer; /* Context ID of last dgram destination check. */
+ const struct cred *owner;
+ /* Rest are SOCK_STREAM only. */
+ long connect_timeout;
+ /* Listening socket that this came from. */
+ struct sock *listener;
+ /* Used for pending list and accept queue during connection handshake.
+ * The listening socket is the head for both lists. Sockets created
+ * for connection requests are placed in the pending list until they
+ * are connected, at which point they are put in the accept queue list
+ * so they can be accepted in accept(). If accept() cannot accept the
+ * connection, it is marked as rejected so the cleanup function knows
+ * to clean up the socket.
+ */
+ struct list_head pending_links;
+ struct list_head accept_queue;
+ bool rejected;
+ struct delayed_work connect_work;
+ struct delayed_work pending_work;
+ struct delayed_work close_work;
+ bool close_work_scheduled;
+ u32 peer_shutdown;
+ bool sent_request;
+ bool ignore_connecting_rst;
+
+ /* Protected by lock_sock(sk) */
+ u64 buffer_size;
+ u64 buffer_min_size;
+ u64 buffer_max_size;
+
+ /* Private to transport. */
+ void *trans;
+};
+
+s64 vsock_stream_has_data(struct vsock_sock *vsk);
+s64 vsock_stream_has_space(struct vsock_sock *vsk);
+struct sock *vsock_create_connected(struct sock *parent);
+
+/**** TRANSPORT ****/
+
+struct vsock_transport_recv_notify_data {
+ u64 data1; /* Transport-defined. */
+ u64 data2; /* Transport-defined. */
+ bool notify_on_block;
+};
+
+struct vsock_transport_send_notify_data {
+ u64 data1; /* Transport-defined. */
+ u64 data2; /* Transport-defined. */
+};
+
+/* Transport features flags */
+/* Transport provides host->guest communication */
+#define VSOCK_TRANSPORT_F_H2G 0x00000001
+/* Transport provides guest->host communication */
+#define VSOCK_TRANSPORT_F_G2H 0x00000002
+/* Transport provides DGRAM communication */
+#define VSOCK_TRANSPORT_F_DGRAM 0x00000004
+
+struct vsock_transport {
+ struct module *module;
+
+ /* Initialize/tear-down socket. */
+ int (*init)(struct vsock_sock *, struct vsock_sock *);
+ void (*destruct)(struct vsock_sock *);
+ void (*release)(struct vsock_sock *);
+
+ /* Cancel all pending packets sent on vsock. */
+ int (*cancel_pkt)(struct vsock_sock *vsk);
+
+ /* Connections. */
+ int (*connect)(struct vsock_sock *);
+
+ /* DGRAM. */
+ int (*dgram_bind)(struct vsock_sock *, struct sockaddr_vm *);
+ int (*dgram_dequeue)(struct vsock_sock *vsk, struct msghdr *msg,
+ size_t len, int flags);
+ int (*dgram_enqueue)(struct vsock_sock *, struct sockaddr_vm *,
+ struct msghdr *, size_t len);
+ bool (*dgram_allow)(u32 cid, u32 port);
+
+ /* STREAM. */
+ /* TODO: stream_bind() */
+ ssize_t (*stream_dequeue)(struct vsock_sock *, struct msghdr *,
+ size_t len, int flags);
+ ssize_t (*stream_enqueue)(struct vsock_sock *, struct msghdr *,
+ size_t len);
+ s64 (*stream_has_data)(struct vsock_sock *);
+ s64 (*stream_has_space)(struct vsock_sock *);
+ u64 (*stream_rcvhiwat)(struct vsock_sock *);
+ bool (*stream_is_active)(struct vsock_sock *);
+ bool (*stream_allow)(u32 cid, u32 port);
+
+ /* Notification. */
+ int (*notify_poll_in)(struct vsock_sock *, size_t, bool *);
+ int (*notify_poll_out)(struct vsock_sock *, size_t, bool *);
+ int (*notify_recv_init)(struct vsock_sock *, size_t,
+ struct vsock_transport_recv_notify_data *);
+ int (*notify_recv_pre_block)(struct vsock_sock *, size_t,
+ struct vsock_transport_recv_notify_data *);
+ int (*notify_recv_pre_dequeue)(struct vsock_sock *, size_t,
+ struct vsock_transport_recv_notify_data *);
+ int (*notify_recv_post_dequeue)(struct vsock_sock *, size_t,
+ ssize_t, bool, struct vsock_transport_recv_notify_data *);
+ int (*notify_send_init)(struct vsock_sock *,
+ struct vsock_transport_send_notify_data *);
+ int (*notify_send_pre_block)(struct vsock_sock *,
+ struct vsock_transport_send_notify_data *);
+ int (*notify_send_pre_enqueue)(struct vsock_sock *,
+ struct vsock_transport_send_notify_data *);
+ int (*notify_send_post_enqueue)(struct vsock_sock *, ssize_t,
+ struct vsock_transport_send_notify_data *);
+ /* sk_lock held by the caller */
+ void (*notify_buffer_size)(struct vsock_sock *, u64 *);
+
+ /* Shutdown. */
+ int (*shutdown)(struct vsock_sock *, int);
+
+ /* Addressing. */
+ u32 (*get_local_cid)(void);
+};
+
+/**** CORE ****/
+
+int vsock_core_register(const struct vsock_transport *t, int features);
+void vsock_core_unregister(const struct vsock_transport *t);
+
+/* The transport may downcast this to access transport-specific functions */
+const struct vsock_transport *vsock_core_get_transport(struct vsock_sock *vsk);
+
+/**** UTILS ****/
+
+/* vsock_table_lock must be held */
+static inline bool __vsock_in_bound_table(struct vsock_sock *vsk)
+{
+ return !list_empty(&vsk->bound_table);
+}
+
+/* vsock_table_lock must be held */
+static inline bool __vsock_in_connected_table(struct vsock_sock *vsk)
+{
+ return !list_empty(&vsk->connected_table);
+}
+
+void vsock_release_pending(struct sock *pending);
+void vsock_add_pending(struct sock *listener, struct sock *pending);
+void vsock_remove_pending(struct sock *listener, struct sock *pending);
+void vsock_enqueue_accept(struct sock *listener, struct sock *connected);
+void vsock_insert_connected(struct vsock_sock *vsk);
+void vsock_remove_bound(struct vsock_sock *vsk);
+void vsock_remove_connected(struct vsock_sock *vsk);
+struct sock *vsock_find_bound_socket(struct sockaddr_vm *addr);
+struct sock *vsock_find_connected_socket(struct sockaddr_vm *src,
+ struct sockaddr_vm *dst);
+void vsock_remove_sock(struct vsock_sock *vsk);
+void vsock_for_each_connected_socket(void (*fn)(struct sock *sk));
+int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk);
+bool vsock_find_cid(unsigned int cid);
+
+/**** TAP ****/
+
+struct vsock_tap {
+ struct net_device *dev;
+ struct module *module;
+ struct list_head list;
+};
+
+int vsock_init_tap(void);
+int vsock_add_tap(struct vsock_tap *vt);
+int vsock_remove_tap(struct vsock_tap *vt);
+void vsock_deliver_tap(struct sk_buff *build_skb(void *opaque), void *opaque);
+
+#endif /* __AF_VSOCK_H__ */