1 /* 2 * nametable.c TIPC nametable functionality. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 * 9 * Authors: Richard Alpe <richard.alpe (at) ericsson.com> 10 */ 11 12 #include <stdio.h> 13 #include <errno.h> 14 15 #include <linux/tipc_netlink.h> 16 #include <linux/tipc.h> 17 #include <linux/genetlink.h> 18 #include <libmnl/libmnl.h> 19 20 #include "cmdl.h" 21 #include "msg.h" 22 #include "nametable.h" 23 24 #define PORTID_STR_LEN 45 /* Four u32 and five delimiter chars */ 25 26 static int nametable_show_cb(const struct nlmsghdr *nlh, void *data) 27 { 28 int *iteration = data; 29 char port_id[PORTID_STR_LEN]; 30 struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); 31 struct nlattr *info[TIPC_NLA_MAX + 1] = {}; 32 struct nlattr *attrs[TIPC_NLA_NAME_TABLE_MAX + 1] = {}; 33 struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1] = {}; 34 const char *scope[] = { "", "zone", "cluster", "node" }; 35 36 mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); 37 if (!info[TIPC_NLA_NAME_TABLE]) 38 return MNL_CB_ERROR; 39 40 mnl_attr_parse_nested(info[TIPC_NLA_NAME_TABLE], parse_attrs, attrs); 41 if (!attrs[TIPC_NLA_NAME_TABLE_PUBL]) 42 return MNL_CB_ERROR; 43 44 mnl_attr_parse_nested(attrs[TIPC_NLA_NAME_TABLE_PUBL], parse_attrs, publ); 45 if (!publ[TIPC_NLA_NAME_TABLE_PUBL]) 46 return MNL_CB_ERROR; 47 48 if (!*iteration) 49 printf("%-10s %-10s %-10s %-26s %-10s\n", 50 "Type", "Lower", "Upper", "Port Identity", 51 "Publication Scope"); 52 (*iteration)++; 53 54 snprintf(port_id, sizeof(port_id), "<%u.%u.%u:%u>", 55 tipc_zone(mnl_attr_get_u32(publ[TIPC_NLA_PUBL_NODE])), 56 tipc_cluster(mnl_attr_get_u32(publ[TIPC_NLA_PUBL_NODE])), 57 tipc_node(mnl_attr_get_u32(publ[TIPC_NLA_PUBL_NODE])), 58 mnl_attr_get_u32(publ[TIPC_NLA_PUBL_REF])); 59 60 printf("%-10u %-10u %-10u %-26s %-12u", 61 mnl_attr_get_u32(publ[TIPC_NLA_PUBL_TYPE]), 62 mnl_attr_get_u32(publ[TIPC_NLA_PUBL_LOWER]), 63 mnl_attr_get_u32(publ[TIPC_NLA_PUBL_UPPER]), 64 port_id, 65 mnl_attr_get_u32(publ[TIPC_NLA_PUBL_KEY])); 66 67 printf("%s\n", scope[mnl_attr_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]); 68 69 return MNL_CB_OK; 70 } 71 72 static int cmd_nametable_show(struct nlmsghdr *nlh, const struct cmd *cmd, 73 struct cmdl *cmdl, void *data) 74 { 75 int iteration = 0; 76 char buf[MNL_SOCKET_BUFFER_SIZE]; 77 78 if (help_flag) { 79 fprintf(stderr, "Usage: %s nametable show\n", cmdl->argv[0]); 80 return -EINVAL; 81 } 82 83 if (!(nlh = msg_init(buf, TIPC_NL_NAME_TABLE_GET))) { 84 fprintf(stderr, "error, message initialisation failed\n"); 85 return -1; 86 } 87 88 return msg_dumpit(nlh, nametable_show_cb, &iteration); 89 } 90 91 void cmd_nametable_help(struct cmdl *cmdl) 92 { 93 fprintf(stderr, 94 "Usage: %s nametable COMMAND\n\n" 95 "COMMANDS\n" 96 " show - Show nametable\n", 97 cmdl->argv[0]); 98 } 99 100 int cmd_nametable(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, 101 void *data) 102 { 103 const struct cmd cmds[] = { 104 { "show", cmd_nametable_show, NULL }, 105 { NULL } 106 }; 107 108 return run_cmd(nlh, cmd, cmds, cmdl, NULL); 109 } 110
