[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/net/tipc/bearer.h b/ap/os/linux/linux-3.4.x/net/tipc/bearer.h
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+/*
+ * net/tipc/bearer.h: Include file for TIPC bearer code
+ *
+ * Copyright (c) 1996-2006, Ericsson AB
+ * Copyright (c) 2005, 2010-2011, Wind River Systems
+ * 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 names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+
+#ifndef _TIPC_BEARER_H
+#define _TIPC_BEARER_H
+
+#include "bcast.h"
+
+#define MAX_BEARERS 2
+#define MAX_MEDIA 2
+
+/*
+ * Identifiers associated with TIPC message header media address info
+ *
+ * - address info field is 20 bytes long
+ * - media type identifier located at offset 3
+ * - remaining bytes vary according to media type
+ */
+
+#define TIPC_MEDIA_ADDR_SIZE 20
+#define TIPC_MEDIA_TYPE_OFFSET 3
+
+/*
+ * Identifiers of supported TIPC media types
+ */
+#define TIPC_MEDIA_TYPE_ETH 1
+
+/*
+ * struct tipc_media_addr - destination address used by TIPC bearers
+ * @value: address info (format defined by media)
+ * @media_id: TIPC media type identifier
+ * @broadcast: non-zero if address is a broadcast address
+ */
+
+struct tipc_media_addr {
+ u8 value[TIPC_MEDIA_ADDR_SIZE];
+ u8 media_id;
+ u8 broadcast;
+};
+
+struct tipc_bearer;
+
+/**
+ * struct tipc_media - TIPC media information available to internal users
+ * @send_msg: routine which handles buffer transmission
+ * @enable_bearer: routine which enables a bearer
+ * @disable_bearer: routine which disables a bearer
+ * @addr2str: routine which converts media address to string
+ * @str2addr: routine which converts media address from string
+ * @addr2msg: routine which converts media address to protocol message area
+ * @msg2addr: routine which converts media address from protocol message area
+ * @bcast_addr: media address used in broadcasting
+ * @priority: default link (and bearer) priority
+ * @tolerance: default time (in ms) before declaring link failure
+ * @window: default window (in packets) before declaring link congestion
+ * @type_id: TIPC media identifier
+ * @name: media name
+ */
+
+struct tipc_media {
+ int (*send_msg)(struct sk_buff *buf,
+ struct tipc_bearer *b_ptr,
+ struct tipc_media_addr *dest);
+ int (*enable_bearer)(struct tipc_bearer *b_ptr);
+ void (*disable_bearer)(struct tipc_bearer *b_ptr);
+ int (*addr2str)(struct tipc_media_addr *a, char *str_buf, int str_size);
+ int (*str2addr)(struct tipc_media_addr *a, char *str_buf);
+ int (*addr2msg)(struct tipc_media_addr *a, char *msg_area);
+ int (*msg2addr)(struct tipc_media_addr *a, char *msg_area);
+ struct tipc_media_addr bcast_addr;
+ u32 priority;
+ u32 tolerance;
+ u32 window;
+ u32 type_id;
+ char name[TIPC_MAX_MEDIA_NAME];
+};
+
+/**
+ * struct tipc_bearer - TIPC bearer structure
+ * @usr_handle: pointer to additional media-specific information about bearer
+ * @mtu: max packet size bearer can support
+ * @blocked: non-zero if bearer is blocked
+ * @lock: spinlock for controlling access to bearer
+ * @addr: media-specific address associated with bearer
+ * @name: bearer name (format = media:interface)
+ * @media: ptr to media structure associated with bearer
+ * @priority: default link priority for bearer
+ * @window: default window size for bearer
+ * @tolerance: default link tolerance for bearer
+ * @identity: array index of this bearer within TIPC bearer array
+ * @link_req: ptr to (optional) structure making periodic link setup requests
+ * @links: list of non-congested links associated with bearer
+ * @cong_links: list of congested links associated with bearer
+ * @active: non-zero if bearer structure is represents a bearer
+ * @net_plane: network plane ('A' through 'H') currently associated with bearer
+ * @nodes: indicates which nodes in cluster can be reached through bearer
+ *
+ * Note: media-specific code is responsible for initialization of the fields
+ * indicated below when a bearer is enabled; TIPC's generic bearer code takes
+ * care of initializing all other fields.
+ */
+struct tipc_bearer {
+ void *usr_handle; /* initalized by media */
+ u32 mtu; /* initalized by media */
+ int blocked; /* initalized by media */
+ struct tipc_media_addr addr; /* initalized by media */
+ char name[TIPC_MAX_BEARER_NAME];
+ spinlock_t lock;
+ struct tipc_media *media;
+ u32 priority;
+ u32 window;
+ u32 tolerance;
+ u32 identity;
+ struct tipc_link_req *link_req;
+ struct list_head links;
+ struct list_head cong_links;
+ int active;
+ char net_plane;
+ struct tipc_node_map nodes;
+};
+
+struct tipc_bearer_names {
+ char media_name[TIPC_MAX_MEDIA_NAME];
+ char if_name[TIPC_MAX_IF_NAME];
+};
+
+struct tipc_link;
+
+extern struct tipc_bearer tipc_bearers[];
+
+/*
+ * TIPC routines available to supported media types
+ */
+int tipc_register_media(struct tipc_media *m_ptr);
+
+void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
+
+int tipc_block_bearer(const char *name);
+void tipc_continue(struct tipc_bearer *tb_ptr);
+
+int tipc_enable_bearer(const char *bearer_name, u32 disc_domain, u32 priority);
+int tipc_disable_bearer(const char *name);
+
+/*
+ * Routines made available to TIPC by supported media types
+ */
+int tipc_eth_media_start(void);
+void tipc_eth_media_stop(void);
+
+int tipc_media_set_priority(const char *name, u32 new_value);
+int tipc_media_set_window(const char *name, u32 new_value);
+void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a);
+struct sk_buff *tipc_media_get_names(void);
+
+struct sk_buff *tipc_bearer_get_names(void);
+void tipc_bearer_add_dest(struct tipc_bearer *b_ptr, u32 dest);
+void tipc_bearer_remove_dest(struct tipc_bearer *b_ptr, u32 dest);
+void tipc_bearer_schedule(struct tipc_bearer *b_ptr, struct tipc_link *l_ptr);
+struct tipc_bearer *tipc_bearer_find(const char *name);
+struct tipc_bearer *tipc_bearer_find_interface(const char *if_name);
+struct tipc_media *tipc_media_find(const char *name);
+int tipc_bearer_resolve_congestion(struct tipc_bearer *b_ptr,
+ struct tipc_link *l_ptr);
+int tipc_bearer_congested(struct tipc_bearer *b_ptr, struct tipc_link *l_ptr);
+void tipc_bearer_stop(void);
+void tipc_bearer_lock_push(struct tipc_bearer *b_ptr);
+
+
+/**
+ * tipc_bearer_send- sends buffer to destination over bearer
+ *
+ * Returns true (1) if successful, or false (0) if unable to send
+ *
+ * IMPORTANT:
+ * The media send routine must not alter the buffer being passed in
+ * as it may be needed for later retransmission!
+ *
+ * If the media send routine returns a non-zero value (indicating that
+ * it was unable to send the buffer), it must:
+ * 1) mark the bearer as blocked,
+ * 2) call tipc_continue() once the bearer is able to send again.
+ * Media types that are unable to meet these two critera must ensure their
+ * send routine always returns success -- even if the buffer was not sent --
+ * and let TIPC's link code deal with the undelivered message.
+ */
+
+static inline int tipc_bearer_send(struct tipc_bearer *b_ptr,
+ struct sk_buff *buf,
+ struct tipc_media_addr *dest)
+{
+ return !b_ptr->media->send_msg(buf, b_ptr, dest);
+}
+
+#endif /* _TIPC_BEARER_H */