1 /*
2 * iplink_ipoib.c IPoIB device support
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: Or Gerlitz <ogerlitz@mellanox.com>
10 * copied iflink_vlan.c authored by Patrick McHardy <kaber@trash.net>
11 */
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include <linux/if_link.h>
17
18 #include "rt_names.h"
19 #include "utils.h"
20 #include "ip_common.h"
21
print_explain(FILE * f)22 static void print_explain(FILE *f)
23 {
24 fprintf(f,
25 "Usage: ... ipoib [pkey PKEY] [mode {datagram | connected}]"
26 "[umcast {0|1}]\n"
27 "\n"
28 "PKEY := 0x8001-0xffff\n"
29 );
30 }
31
explain(void)32 static void explain(void)
33 {
34 print_explain(stderr);
35 }
36
mode_arg(void)37 static int mode_arg(void)
38 {
39 fprintf(stderr, "Error: argument of \"mode\" must be \"datagram\""
40 "or \"connected\"\n");
41 return -1;
42 }
43
ipoib_parse_opt(struct link_util * lu,int argc,char ** argv,struct nlmsghdr * n)44 static int ipoib_parse_opt(struct link_util *lu, int argc, char **argv,
45 struct nlmsghdr *n)
46 {
47 __u16 pkey, mode, umcast;
48
49 while (argc > 0) {
50 if (matches(*argv, "pkey") == 0) {
51 NEXT_ARG();
52 if (get_u16(&pkey, *argv, 0))
53 invarg("pkey is invalid", *argv);
54 addattr_l(n, 1024, IFLA_IPOIB_PKEY, &pkey, 2);
55 } else if (matches(*argv, "mode") == 0) {
56 NEXT_ARG();
57 if (strcmp(*argv, "datagram") == 0)
58 mode = IPOIB_MODE_DATAGRAM;
59 else if (strcmp(*argv, "connected") == 0)
60 mode = IPOIB_MODE_CONNECTED;
61 else
62 return mode_arg();
63 addattr_l(n, 1024, IFLA_IPOIB_MODE, &mode, 2);
64 } else if (matches(*argv, "umcast") == 0) {
65 NEXT_ARG();
66 if (get_u16(&umcast, *argv, 0))
67 invarg("umcast is invalid", *argv);
68 addattr_l(n, 1024, IFLA_IPOIB_UMCAST, &umcast, 2);
69 } else if (matches(*argv, "help") == 0) {
70 explain();
71 return -1;
72 } else {
73 fprintf(stderr, "ipoib: unknown option \"%s\"?\n", *argv);
74 explain();
75 return -1;
76 }
77 argc--, argv++;
78 }
79
80 return 0;
81 }
82
ipoib_print_opt(struct link_util * lu,FILE * f,struct rtattr * tb[])83 static void ipoib_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
84 {
85 __u16 mode;
86
87 if (!tb)
88 return;
89
90 if (!tb[IFLA_IPOIB_PKEY] ||
91 RTA_PAYLOAD(tb[IFLA_IPOIB_PKEY]) < sizeof(__u16))
92 return;
93
94 fprintf(f, "pkey %#.4x ", rta_getattr_u16(tb[IFLA_IPOIB_PKEY]));
95
96 if (!tb[IFLA_IPOIB_MODE] ||
97 RTA_PAYLOAD(tb[IFLA_IPOIB_MODE]) < sizeof(__u16))
98 return;
99
100 mode = rta_getattr_u16(tb[IFLA_IPOIB_MODE]);
101 fprintf(f, "mode %s ",
102 mode == IPOIB_MODE_DATAGRAM ? "datagram" :
103 mode == IPOIB_MODE_CONNECTED ? "connected" :
104 "unknown");
105
106 if (!tb[IFLA_IPOIB_UMCAST] ||
107 RTA_PAYLOAD(tb[IFLA_IPOIB_UMCAST]) < sizeof(__u16))
108 return;
109
110 fprintf(f, "umcast %.4x ", rta_getattr_u16(tb[IFLA_IPOIB_UMCAST]));
111 }
112
ipoib_print_help(struct link_util * lu,int argc,char ** argv,FILE * f)113 static void ipoib_print_help(struct link_util *lu, int argc, char **argv,
114 FILE *f)
115 {
116 print_explain(f);
117 }
118
119 struct link_util ipoib_link_util = {
120 .id = "ipoib",
121 .maxattr = IFLA_IPOIB_MAX,
122 .parse_opt = ipoib_parse_opt,
123 .print_opt = ipoib_print_opt,
124 .print_help = ipoib_print_help,
125 };
126