mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 19:36:39 +07:00
50d3e6399a
Renames items that are improperly labelled as "network scope" items (which are represented by simple integer values) rather than "network domain" items (which are represented by <Z.C.N>-type network addresses). This change is purely cosmetic, and does not affect the operation of TIPC. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
503 lines
15 KiB
C
503 lines
15 KiB
C
/*
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* net/tipc/config.c: TIPC configuration management code
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*
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* Copyright (c) 2002-2006, Ericsson AB
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* Copyright (c) 2004-2007, 2010-2011, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "core.h"
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#include "port.h"
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#include "name_table.h"
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#include "config.h"
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static u32 config_port_ref;
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static DEFINE_SPINLOCK(config_lock);
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static const void *req_tlv_area; /* request message TLV area */
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static int req_tlv_space; /* request message TLV area size */
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static int rep_headroom; /* reply message headroom to use */
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struct sk_buff *tipc_cfg_reply_alloc(int payload_size)
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{
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struct sk_buff *buf;
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buf = alloc_skb(rep_headroom + payload_size, GFP_ATOMIC);
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if (buf)
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skb_reserve(buf, rep_headroom);
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return buf;
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}
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int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type,
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void *tlv_data, int tlv_data_size)
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{
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struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf);
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int new_tlv_space = TLV_SPACE(tlv_data_size);
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if (skb_tailroom(buf) < new_tlv_space)
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return 0;
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skb_put(buf, new_tlv_space);
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tlv->tlv_type = htons(tlv_type);
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tlv->tlv_len = htons(TLV_LENGTH(tlv_data_size));
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if (tlv_data_size && tlv_data)
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memcpy(TLV_DATA(tlv), tlv_data, tlv_data_size);
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return 1;
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}
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static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value)
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{
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struct sk_buff *buf;
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__be32 value_net;
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buf = tipc_cfg_reply_alloc(TLV_SPACE(sizeof(value)));
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if (buf) {
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value_net = htonl(value);
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tipc_cfg_append_tlv(buf, tlv_type, &value_net,
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sizeof(value_net));
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}
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return buf;
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}
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static struct sk_buff *tipc_cfg_reply_unsigned(u32 value)
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{
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return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value);
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}
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struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string)
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{
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struct sk_buff *buf;
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int string_len = strlen(string) + 1;
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buf = tipc_cfg_reply_alloc(TLV_SPACE(string_len));
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if (buf)
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tipc_cfg_append_tlv(buf, tlv_type, string, string_len);
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return buf;
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}
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#define MAX_STATS_INFO 2000
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static struct sk_buff *tipc_show_stats(void)
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{
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struct sk_buff *buf;
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struct tlv_desc *rep_tlv;
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struct print_buf pb;
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int str_len;
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(u32 *)TLV_DATA(req_tlv_area));
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if (value != 0)
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return tipc_cfg_reply_error_string("unsupported argument");
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buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO));
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if (buf == NULL)
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return NULL;
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rep_tlv = (struct tlv_desc *)buf->data;
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tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO);
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tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n");
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/* Use additional tipc_printf()'s to return more info ... */
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str_len = tipc_printbuf_validate(&pb);
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skb_put(buf, TLV_SPACE(str_len));
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TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
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return buf;
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}
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static struct sk_buff *cfg_enable_bearer(void)
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{
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struct tipc_bearer_config *args;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_CONFIG))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area);
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if (tipc_enable_bearer(args->name,
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ntohl(args->disc_domain),
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ntohl(args->priority)))
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return tipc_cfg_reply_error_string("unable to enable bearer");
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_disable_bearer(void)
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{
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_BEARER_NAME))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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if (tipc_disable_bearer((char *)TLV_DATA(req_tlv_area)))
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return tipc_cfg_reply_error_string("unable to disable bearer");
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_own_addr(void)
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{
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u32 addr;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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addr = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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if (addr == tipc_own_addr)
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return tipc_cfg_reply_none();
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if (!tipc_addr_node_valid(addr))
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return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
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" (node address)");
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if (tipc_mode == TIPC_NET_MODE)
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return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (cannot change node address once assigned)");
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/*
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* Must release all spinlocks before calling start_net() because
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* Linux version of TIPC calls eth_media_start() which calls
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* register_netdevice_notifier() which may block!
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*
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* Temporarily releasing the lock should be harmless for non-Linux TIPC,
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* but Linux version of eth_media_start() should really be reworked
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* so that it can be called with spinlocks held.
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*/
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spin_unlock_bh(&config_lock);
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tipc_core_start_net(addr);
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spin_lock_bh(&config_lock);
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_remote_mng(void)
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{
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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tipc_remote_management = (value != 0);
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_max_publications(void)
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{
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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if (value != delimit(value, 1, 65535))
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return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
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" (max publications must be 1-65535)");
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tipc_max_publications = value;
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_max_subscriptions(void)
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{
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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if (value != delimit(value, 1, 65535))
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return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
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" (max subscriptions must be 1-65535");
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tipc_max_subscriptions = value;
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_max_ports(void)
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{
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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if (value == tipc_max_ports)
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return tipc_cfg_reply_none();
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if (value != delimit(value, 127, 65535))
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return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
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" (max ports must be 127-65535)");
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if (tipc_mode != TIPC_NOT_RUNNING)
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return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (cannot change max ports while TIPC is active)");
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tipc_max_ports = value;
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return tipc_cfg_reply_none();
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}
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static struct sk_buff *cfg_set_netid(void)
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{
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u32 value;
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if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
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return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
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value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
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if (value == tipc_net_id)
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return tipc_cfg_reply_none();
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if (value != delimit(value, 1, 9999))
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return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
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" (network id must be 1-9999)");
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if (tipc_mode == TIPC_NET_MODE)
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return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (cannot change network id once TIPC has joined a network)");
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tipc_net_id = value;
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return tipc_cfg_reply_none();
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}
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struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area,
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int request_space, int reply_headroom)
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{
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struct sk_buff *rep_tlv_buf;
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spin_lock_bh(&config_lock);
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/* Save request and reply details in a well-known location */
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req_tlv_area = request_area;
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req_tlv_space = request_space;
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rep_headroom = reply_headroom;
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/* Check command authorization */
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if (likely(orig_node == tipc_own_addr)) {
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/* command is permitted */
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} else if (cmd >= 0x8000) {
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rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (cannot be done remotely)");
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goto exit;
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} else if (!tipc_remote_management) {
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rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE);
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goto exit;
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} else if (cmd >= 0x4000) {
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u32 domain = 0;
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if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) ||
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(domain != orig_node)) {
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rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR);
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goto exit;
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}
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}
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/* Call appropriate processing routine */
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switch (cmd) {
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case TIPC_CMD_NOOP:
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rep_tlv_buf = tipc_cfg_reply_none();
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break;
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case TIPC_CMD_GET_NODES:
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rep_tlv_buf = tipc_node_get_nodes(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_GET_LINKS:
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rep_tlv_buf = tipc_node_get_links(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_SHOW_LINK_STATS:
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rep_tlv_buf = tipc_link_cmd_show_stats(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_RESET_LINK_STATS:
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rep_tlv_buf = tipc_link_cmd_reset_stats(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_SHOW_NAME_TABLE:
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rep_tlv_buf = tipc_nametbl_get(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_GET_BEARER_NAMES:
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rep_tlv_buf = tipc_bearer_get_names();
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break;
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case TIPC_CMD_GET_MEDIA_NAMES:
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rep_tlv_buf = tipc_media_get_names();
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break;
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case TIPC_CMD_SHOW_PORTS:
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rep_tlv_buf = tipc_port_get_ports();
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break;
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case TIPC_CMD_SET_LOG_SIZE:
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rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space);
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break;
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case TIPC_CMD_DUMP_LOG:
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rep_tlv_buf = tipc_log_dump();
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break;
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case TIPC_CMD_SHOW_STATS:
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rep_tlv_buf = tipc_show_stats();
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break;
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case TIPC_CMD_SET_LINK_TOL:
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case TIPC_CMD_SET_LINK_PRI:
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case TIPC_CMD_SET_LINK_WINDOW:
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rep_tlv_buf = tipc_link_cmd_config(req_tlv_area, req_tlv_space, cmd);
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break;
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case TIPC_CMD_ENABLE_BEARER:
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rep_tlv_buf = cfg_enable_bearer();
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break;
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case TIPC_CMD_DISABLE_BEARER:
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rep_tlv_buf = cfg_disable_bearer();
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break;
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case TIPC_CMD_SET_NODE_ADDR:
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rep_tlv_buf = cfg_set_own_addr();
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break;
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case TIPC_CMD_SET_REMOTE_MNG:
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rep_tlv_buf = cfg_set_remote_mng();
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break;
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case TIPC_CMD_SET_MAX_PORTS:
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rep_tlv_buf = cfg_set_max_ports();
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break;
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case TIPC_CMD_SET_MAX_PUBL:
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rep_tlv_buf = cfg_set_max_publications();
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break;
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case TIPC_CMD_SET_MAX_SUBSCR:
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rep_tlv_buf = cfg_set_max_subscriptions();
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break;
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case TIPC_CMD_SET_NETID:
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rep_tlv_buf = cfg_set_netid();
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break;
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case TIPC_CMD_GET_REMOTE_MNG:
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rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management);
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break;
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case TIPC_CMD_GET_MAX_PORTS:
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rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports);
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break;
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case TIPC_CMD_GET_MAX_PUBL:
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rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications);
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break;
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case TIPC_CMD_GET_MAX_SUBSCR:
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rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions);
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break;
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case TIPC_CMD_GET_NETID:
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rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id);
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break;
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case TIPC_CMD_NOT_NET_ADMIN:
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rep_tlv_buf =
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tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN);
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break;
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case TIPC_CMD_SET_MAX_ZONES:
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case TIPC_CMD_GET_MAX_ZONES:
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case TIPC_CMD_SET_MAX_SLAVES:
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case TIPC_CMD_GET_MAX_SLAVES:
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case TIPC_CMD_SET_MAX_CLUSTERS:
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case TIPC_CMD_GET_MAX_CLUSTERS:
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case TIPC_CMD_SET_MAX_NODES:
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case TIPC_CMD_GET_MAX_NODES:
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rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (obsolete command)");
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break;
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default:
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rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
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" (unknown command)");
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break;
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}
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/* Return reply buffer */
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exit:
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spin_unlock_bh(&config_lock);
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return rep_tlv_buf;
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}
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static void cfg_named_msg_event(void *userdata,
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u32 port_ref,
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struct sk_buff **buf,
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const unchar *msg,
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u32 size,
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u32 importance,
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struct tipc_portid const *orig,
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struct tipc_name_seq const *dest)
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{
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struct tipc_cfg_msg_hdr *req_hdr;
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struct tipc_cfg_msg_hdr *rep_hdr;
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struct sk_buff *rep_buf;
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/* Validate configuration message header (ignore invalid message) */
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|
|
req_hdr = (struct tipc_cfg_msg_hdr *)msg;
|
|
if ((size < sizeof(*req_hdr)) ||
|
|
(size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) ||
|
|
(ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) {
|
|
warn("Invalid configuration message discarded\n");
|
|
return;
|
|
}
|
|
|
|
/* Generate reply for request (if can't, return request) */
|
|
|
|
rep_buf = tipc_cfg_do_cmd(orig->node,
|
|
ntohs(req_hdr->tcm_type),
|
|
msg + sizeof(*req_hdr),
|
|
size - sizeof(*req_hdr),
|
|
BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr));
|
|
if (rep_buf) {
|
|
skb_push(rep_buf, sizeof(*rep_hdr));
|
|
rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data;
|
|
memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr));
|
|
rep_hdr->tcm_len = htonl(rep_buf->len);
|
|
rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST);
|
|
} else {
|
|
rep_buf = *buf;
|
|
*buf = NULL;
|
|
}
|
|
|
|
/* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */
|
|
tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len);
|
|
}
|
|
|
|
int tipc_cfg_init(void)
|
|
{
|
|
struct tipc_name_seq seq;
|
|
int res;
|
|
|
|
res = tipc_createport(NULL, TIPC_CRITICAL_IMPORTANCE,
|
|
NULL, NULL, NULL,
|
|
NULL, cfg_named_msg_event, NULL,
|
|
NULL, &config_port_ref);
|
|
if (res)
|
|
goto failed;
|
|
|
|
seq.type = TIPC_CFG_SRV;
|
|
seq.lower = seq.upper = tipc_own_addr;
|
|
res = tipc_nametbl_publish_rsv(config_port_ref, TIPC_ZONE_SCOPE, &seq);
|
|
if (res)
|
|
goto failed;
|
|
|
|
return 0;
|
|
|
|
failed:
|
|
err("Unable to create configuration service\n");
|
|
return res;
|
|
}
|
|
|
|
void tipc_cfg_stop(void)
|
|
{
|
|
if (config_port_ref) {
|
|
tipc_deleteport(config_port_ref);
|
|
config_port_ref = 0;
|
|
}
|
|
}
|