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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] = {}; | |
c4572a46 PP |
23 | |
24 | mnl_attr_parse(nlh, 0, rd_attr_cb, tb); | |
25 | ||
26 | if (tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) { | |
27 | const char *mode_str; | |
28 | uint8_t netns_mode; | |
29 | ||
30 | netns_mode = | |
31 | mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); | |
32 | ||
6749801b | 33 | if (netns_mode < ARRAY_SIZE(netns_modes_str)) |
c4572a46 PP |
34 | mode_str = netns_modes_str[netns_mode]; |
35 | else | |
36 | mode_str = "unknown"; | |
37 | ||
b0a688a5 IK |
38 | print_color_string(PRINT_ANY, COLOR_NONE, "netns", "netns %s\n", |
39 | mode_str); | |
c4572a46 PP |
40 | } |
41 | return MNL_CB_OK; | |
42 | } | |
43 | ||
44 | static int sys_show_no_args(struct rd *rd) | |
45 | { | |
46 | uint32_t seq; | |
47 | int ret; | |
48 | ||
49 | rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_GET, | |
50 | &seq, (NLM_F_REQUEST | NLM_F_ACK)); | |
51 | ret = rd_send_msg(rd); | |
52 | if (ret) | |
53 | return ret; | |
54 | ||
55 | return rd_recv_msg(rd, sys_show_parse_cb, rd, seq); | |
56 | } | |
57 | ||
58 | static int sys_show(struct rd *rd) | |
59 | { | |
60 | const struct rd_cmd cmds[] = { | |
61 | { NULL, sys_show_no_args}, | |
62 | { "netns", sys_show_no_args}, | |
63 | { 0 } | |
64 | }; | |
65 | ||
66 | return rd_exec_cmd(rd, cmds, "parameter"); | |
67 | } | |
68 | ||
69 | static int sys_set_netns_cmd(struct rd *rd, bool enable) | |
70 | { | |
71 | uint32_t seq; | |
72 | ||
73 | rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_SET, | |
74 | &seq, (NLM_F_REQUEST | NLM_F_ACK)); | |
75 | mnl_attr_put_u8(rd->nlh, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, enable); | |
76 | ||
77 | return rd_sendrecv_msg(rd, seq); | |
78 | } | |
79 | ||
80 | static bool sys_valid_netns_cmd(const char *cmd) | |
81 | { | |
82 | int i; | |
83 | ||
84 | for (i = 0; i < ARRAY_SIZE(netns_modes_str); i++) { | |
85 | if (!strcmp(cmd, netns_modes_str[i])) | |
86 | return true; | |
87 | } | |
88 | return false; | |
89 | } | |
90 | ||
91 | static int sys_set_netns_args(struct rd *rd) | |
92 | { | |
93 | bool cmd; | |
94 | ||
95 | if (rd_no_arg(rd) || !sys_valid_netns_cmd(rd_argv(rd))) { | |
96 | pr_err("valid options are: { shared | exclusive }\n"); | |
97 | return -EINVAL; | |
98 | } | |
99 | ||
100 | cmd = (strcmp(rd_argv(rd), "shared") == 0) ? true : false; | |
101 | ||
102 | return sys_set_netns_cmd(rd, cmd); | |
103 | } | |
104 | ||
105 | static int sys_set_help(struct rd *rd) | |
106 | { | |
107 | pr_out("Usage: %s system set [PARAM] value\n", rd->filename); | |
108 | pr_out(" system set netns { shared | exclusive }\n"); | |
109 | return 0; | |
110 | } | |
111 | ||
112 | static int sys_set(struct rd *rd) | |
113 | { | |
114 | const struct rd_cmd cmds[] = { | |
115 | { NULL, sys_set_help }, | |
116 | { "help", sys_set_help }, | |
117 | { "netns", sys_set_netns_args}, | |
118 | { 0 } | |
119 | }; | |
120 | ||
121 | return rd_exec_cmd(rd, cmds, "parameter"); | |
122 | } | |
123 | ||
124 | int cmd_sys(struct rd *rd) | |
125 | { | |
126 | const struct rd_cmd cmds[] = { | |
127 | { NULL, sys_show }, | |
128 | { "show", sys_show }, | |
129 | { "set", sys_set }, | |
130 | { "help", sys_help }, | |
131 | { 0 } | |
132 | }; | |
133 | ||
134 | return rd_exec_cmd(rd, cmds, "system command"); | |
135 | } |