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c4572a46 PP |
1 | // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
2 | /* | |
3 | * sys.c RDMA tool | |
4 | */ | |
5 | ||
6 | #include "rdma.h" | |
7 | ||
8 | static int sys_help(struct rd *rd) | |
9 | { | |
10 | pr_out("Usage: %s system show [ netns ]\n", rd->filename); | |
11 | pr_out(" %s system set netns { shared | exclusive }\n", rd->filename); | |
12 | return 0; | |
13 | } | |
14 | ||
15 | static const char *netns_modes_str[] = { | |
16 | "exclusive", | |
17 | "shared", | |
18 | }; | |
19 | ||
20 | static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data) | |
21 | { | |
22 | struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {}; | |
23 | struct rd *rd = data; | |
24 | ||
25 | mnl_attr_parse(nlh, 0, rd_attr_cb, tb); | |
26 | ||
27 | if (tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) { | |
28 | const char *mode_str; | |
29 | uint8_t netns_mode; | |
30 | ||
31 | netns_mode = | |
32 | mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); | |
33 | ||
34 | if (netns_mode <= ARRAY_SIZE(netns_modes_str)) | |
35 | mode_str = netns_modes_str[netns_mode]; | |
36 | else | |
37 | mode_str = "unknown"; | |
38 | ||
39 | if (rd->json_output) | |
40 | jsonw_string_field(rd->jw, "netns", mode_str); | |
41 | else | |
42 | pr_out("netns %s\n", mode_str); | |
43 | } | |
44 | return MNL_CB_OK; | |
45 | } | |
46 | ||
47 | static int sys_show_no_args(struct rd *rd) | |
48 | { | |
49 | uint32_t seq; | |
50 | int ret; | |
51 | ||
52 | rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_GET, | |
53 | &seq, (NLM_F_REQUEST | NLM_F_ACK)); | |
54 | ret = rd_send_msg(rd); | |
55 | if (ret) | |
56 | return ret; | |
57 | ||
58 | return rd_recv_msg(rd, sys_show_parse_cb, rd, seq); | |
59 | } | |
60 | ||
61 | static int sys_show(struct rd *rd) | |
62 | { | |
63 | const struct rd_cmd cmds[] = { | |
64 | { NULL, sys_show_no_args}, | |
65 | { "netns", sys_show_no_args}, | |
66 | { 0 } | |
67 | }; | |
68 | ||
69 | return rd_exec_cmd(rd, cmds, "parameter"); | |
70 | } | |
71 | ||
72 | static int sys_set_netns_cmd(struct rd *rd, bool enable) | |
73 | { | |
74 | uint32_t seq; | |
75 | ||
76 | rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_SET, | |
77 | &seq, (NLM_F_REQUEST | NLM_F_ACK)); | |
78 | mnl_attr_put_u8(rd->nlh, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, enable); | |
79 | ||
80 | return rd_sendrecv_msg(rd, seq); | |
81 | } | |
82 | ||
83 | static bool sys_valid_netns_cmd(const char *cmd) | |
84 | { | |
85 | int i; | |
86 | ||
87 | for (i = 0; i < ARRAY_SIZE(netns_modes_str); i++) { | |
88 | if (!strcmp(cmd, netns_modes_str[i])) | |
89 | return true; | |
90 | } | |
91 | return false; | |
92 | } | |
93 | ||
94 | static int sys_set_netns_args(struct rd *rd) | |
95 | { | |
96 | bool cmd; | |
97 | ||
98 | if (rd_no_arg(rd) || !sys_valid_netns_cmd(rd_argv(rd))) { | |
99 | pr_err("valid options are: { shared | exclusive }\n"); | |
100 | return -EINVAL; | |
101 | } | |
102 | ||
103 | cmd = (strcmp(rd_argv(rd), "shared") == 0) ? true : false; | |
104 | ||
105 | return sys_set_netns_cmd(rd, cmd); | |
106 | } | |
107 | ||
108 | static int sys_set_help(struct rd *rd) | |
109 | { | |
110 | pr_out("Usage: %s system set [PARAM] value\n", rd->filename); | |
111 | pr_out(" system set netns { shared | exclusive }\n"); | |
112 | return 0; | |
113 | } | |
114 | ||
115 | static int sys_set(struct rd *rd) | |
116 | { | |
117 | const struct rd_cmd cmds[] = { | |
118 | { NULL, sys_set_help }, | |
119 | { "help", sys_set_help }, | |
120 | { "netns", sys_set_netns_args}, | |
121 | { 0 } | |
122 | }; | |
123 | ||
124 | return rd_exec_cmd(rd, cmds, "parameter"); | |
125 | } | |
126 | ||
127 | int cmd_sys(struct rd *rd) | |
128 | { | |
129 | const struct rd_cmd cmds[] = { | |
130 | { NULL, sys_show }, | |
131 | { "show", sys_show }, | |
132 | { "set", sys_set }, | |
133 | { "help", sys_help }, | |
134 | { 0 } | |
135 | }; | |
136 | ||
137 | return rd_exec_cmd(rd, cmds, "system command"); | |
138 | } |