![Richard Alpe](/assets/img/avatar_default.png)
Add TIPC_NL_LINK_SET to the new tipc netlink API. This command can set one or more link properties for a particular link. Netlink logical layout of link set message: -> link -> name -> properties [ -> tolerance ] [ -> priority ] [ -> window ] Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
190 lines
5.3 KiB
C
190 lines
5.3 KiB
C
/*
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* net/tipc/netlink.c: TIPC configuration handling
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*
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* Copyright (c) 2005-2006, 2014, Ericsson AB
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* Copyright (c) 2005-2007, 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 "config.h"
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#include "socket.h"
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#include "bearer.h"
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#include "link.h"
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#include <net/genetlink.h>
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static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
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{
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struct sk_buff *rep_buf;
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struct nlmsghdr *rep_nlh;
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struct nlmsghdr *req_nlh = info->nlhdr;
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struct tipc_genlmsghdr *req_userhdr = info->userhdr;
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int hdr_space = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);
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u16 cmd;
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if ((req_userhdr->cmd & 0xC000) && (!netlink_capable(skb, CAP_NET_ADMIN)))
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cmd = TIPC_CMD_NOT_NET_ADMIN;
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else
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cmd = req_userhdr->cmd;
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rep_buf = tipc_cfg_do_cmd(req_userhdr->dest, cmd,
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nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN,
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nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN),
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hdr_space);
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if (rep_buf) {
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skb_push(rep_buf, hdr_space);
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rep_nlh = nlmsg_hdr(rep_buf);
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memcpy(rep_nlh, req_nlh, hdr_space);
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rep_nlh->nlmsg_len = rep_buf->len;
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genlmsg_unicast(&init_net, rep_buf, NETLINK_CB(skb).portid);
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}
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return 0;
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}
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static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
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[TIPC_NLA_UNSPEC] = { .type = NLA_UNSPEC, },
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[TIPC_NLA_BEARER] = { .type = NLA_NESTED, },
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[TIPC_NLA_SOCK] = { .type = NLA_NESTED, },
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[TIPC_NLA_PUBL] = { .type = NLA_NESTED, },
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[TIPC_NLA_LINK] = { .type = NLA_NESTED, },
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};
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/* Legacy ASCII API */
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static struct genl_family tipc_genl_family = {
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.id = GENL_ID_GENERATE,
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.name = TIPC_GENL_NAME,
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.version = TIPC_GENL_VERSION,
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.hdrsize = TIPC_GENL_HDRLEN,
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.maxattr = 0,
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};
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/* Legacy ASCII API */
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static struct genl_ops tipc_genl_ops[] = {
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{
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.cmd = TIPC_GENL_CMD,
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.doit = handle_cmd,
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},
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};
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/* Users of the legacy API (tipc-config) can't handle that we add operations,
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* so we have a separate genl handling for the new API.
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*/
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struct genl_family tipc_genl_v2_family = {
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.id = GENL_ID_GENERATE,
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.name = TIPC_GENL_V2_NAME,
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.version = TIPC_GENL_V2_VERSION,
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.hdrsize = 0,
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.maxattr = TIPC_NLA_MAX,
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};
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static const struct genl_ops tipc_genl_v2_ops[] = {
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{
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.cmd = TIPC_NL_BEARER_DISABLE,
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.doit = tipc_nl_bearer_disable,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_BEARER_ENABLE,
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.doit = tipc_nl_bearer_enable,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_BEARER_GET,
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.doit = tipc_nl_bearer_get,
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.dumpit = tipc_nl_bearer_dump,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_BEARER_SET,
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.doit = tipc_nl_bearer_set,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_SOCK_GET,
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.dumpit = tipc_nl_sk_dump,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_PUBL_GET,
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.dumpit = tipc_nl_publ_dump,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_LINK_GET,
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.doit = tipc_nl_link_get,
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.dumpit = tipc_nl_link_dump,
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.policy = tipc_nl_policy,
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},
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{
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.cmd = TIPC_NL_LINK_SET,
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.doit = tipc_nl_link_set,
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.policy = tipc_nl_policy,
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}
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};
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int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
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{
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u32 maxattr = tipc_genl_v2_family.maxattr;
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*attr = tipc_genl_v2_family.attrbuf;
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if (!*attr)
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return -EOPNOTSUPP;
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return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy);
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}
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int tipc_netlink_start(void)
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{
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int res;
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res = genl_register_family_with_ops(&tipc_genl_family, tipc_genl_ops);
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if (res) {
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pr_err("Failed to register legacy interface\n");
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return res;
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}
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res = genl_register_family_with_ops(&tipc_genl_v2_family,
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tipc_genl_v2_ops);
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if (res) {
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pr_err("Failed to register netlink interface\n");
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return res;
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}
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return 0;
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}
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void tipc_netlink_stop(void)
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{
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genl_unregister_family(&tipc_genl_family);
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genl_unregister_family(&tipc_genl_v2_family);
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}
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