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535194a172
This enables a user to remove an offline peer from the kernel data structures. This could for example be useful when deliberately scaling in peer nodes in a cloud environment. This functionality was first merged in:f9dec657e4(Richard Alpe tipc: add peer remove functionality) And later backed out (as the kernel counterpart was held up) in:385caeb13b(Stephen Hemminger Revert "tipc: add peer remove functionality") Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Reviewed-by: Ying Xue <ying.xue@windriver.com>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
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* peer.c TIPC peer functionality.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Richard Alpe <richard.alpe@ericsson.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <linux/tipc_netlink.h>
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#include <linux/tipc.h>
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#include <linux/genetlink.h>
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#include <libmnl/libmnl.h>
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#include "cmdl.h"
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#include "msg.h"
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#include "misc.h"
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#include "peer.h"
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static int cmd_peer_rm_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
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struct cmdl *cmdl, void *data)
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{
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char *str;
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uint32_t addr;
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struct nlattr *nest;
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char buf[MNL_SOCKET_BUFFER_SIZE];
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if ((cmdl->argc != cmdl->optind + 1) || help_flag) {
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fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
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cmdl->argv[0]);
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return -EINVAL;
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}
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str = shift_cmdl(cmdl);
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addr = str2addr(str);
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if (!addr)
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return -1;
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if (!(nlh = msg_init(buf, TIPC_NL_PEER_REMOVE))) {
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fprintf(stderr, "error, message initialisation failed\n");
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return -1;
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}
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nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
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mnl_attr_put_u32(nlh, TIPC_NLA_NET_ADDR, addr);
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mnl_attr_nest_end(nlh, nest);
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return msg_doit(nlh, NULL, NULL);
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}
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static void cmd_peer_rm_help(struct cmdl *cmdl)
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{
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fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
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cmdl->argv[0]);
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}
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static int cmd_peer_rm(struct nlmsghdr *nlh, const struct cmd *cmd,
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struct cmdl *cmdl, void *data)
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{
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const struct cmd cmds[] = {
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{ "address", cmd_peer_rm_addr, cmd_peer_rm_help },
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{ NULL }
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};
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return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}
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void cmd_peer_help(struct cmdl *cmdl)
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{
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fprintf(stderr,
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"Usage: %s peer COMMAND [ARGS] ...\n\n"
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"COMMANDS\n"
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" remove - Remove an offline peer node\n",
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cmdl->argv[0]);
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}
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int cmd_peer(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
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void *data)
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{
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const struct cmd cmds[] = {
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{ "remove", cmd_peer_rm, cmd_peer_rm_help },
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{ NULL }
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};
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return run_cmd(nlh, cmd, cmds, cmdl, NULL);
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}
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