Richard Alpe | f043759 | 2015-05-07 15:07:36 +0200 | [diff] [blame] | 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@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 | } |