1 /*
2 * generate_nlmsg.c Testsuite helper generating nlmsg blob
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: Phil Sutter <phil@nwl.cc>
10 */
11
12 #include <netinet/ether.h>
13 #include <libnetlink.h>
14 #include <sys/socket.h>
15 #include <linux/if.h>
16 #include <errno.h>
17 #include <stdio.h>
18
fill_vf_rate_test(void * buf,size_t buflen)19 int fill_vf_rate_test(void *buf, size_t buflen)
20 {
21 char bcmac[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
22 struct ifla_vf_mac vf_mac = {
23 .mac = { 0x0, 0x26, 0x6c, 0xff, 0xb5, 0xc0 },
24 };
25 struct ifla_vf_link_state vf_link_state = { 0 };
26 struct ifla_vf_tx_rate vf_tx_rate = { 0 };
27 struct ifla_vf_spoofchk vf_spoofchk = {
28 .setting = 1,
29 };
30 struct ifla_vf_vlan vf_vlan = { 0 };
31 struct rtattr *vfinfo_list, *vfinfo;
32 struct nlmsghdr *h = buf;
33 struct ifinfomsg *ifi;
34
35 h->nlmsg_type = RTM_NEWLINK;
36 h->nlmsg_len = NLMSG_LENGTH(sizeof(*ifi));
37
38 ifi = NLMSG_DATA(h);
39 ifi->ifi_type = ARPHRD_ETHER;
40 ifi->ifi_index = 1;
41 ifi->ifi_flags = IFF_RUNNING | IFF_BROADCAST |
42 IFF_MULTICAST | IFF_UP | IFF_LOWER_UP;
43
44 #define ASSERT(x) if (x < 0) return -1
45 #define ATTR_L(t, v, l) ASSERT(addattr_l(h, buflen, t, v, l))
46 #define ATTR_8(t, v) ASSERT(addattr8(h, buflen, t, v))
47 #define ATTR_32(t, v) ASSERT(addattr32(h, buflen, t, v))
48 #define ATTR_STRZ(t, v) ASSERT(addattrstrz(h, buflen, t, v))
49
50 #define NEST(t) addattr_nest(h, buflen, t)
51 #define NEST_END(t) addattr_nest_end(h, t)
52
53 ATTR_STRZ(IFLA_IFNAME, "eth0");
54 ATTR_32(IFLA_TXQLEN, 10000);
55 ATTR_8(IFLA_OPERSTATE, 6);
56 ATTR_8(IFLA_LINKMODE, 0);
57 ATTR_32(IFLA_MTU, 9000);
58 ATTR_32(IFLA_GROUP, 0);
59 ATTR_32(IFLA_PROMISCUITY, 0);
60 ATTR_32(IFLA_NUM_TX_QUEUES, 8);
61 ATTR_32(IFLA_NUM_RX_QUEUES, 8);
62 ATTR_8(IFLA_CARRIER, 1);
63 ATTR_STRZ(IFLA_QDISC, "mq");
64 ATTR_L(IFLA_ADDRESS, vf_mac.mac, ETH_ALEN);
65 ATTR_L(IFLA_BROADCAST, bcmac, sizeof(bcmac));
66 ATTR_32(IFLA_NUM_VF, 2);
67
68 vfinfo_list = NEST(IFLA_VFINFO_LIST);
69
70 vfinfo = NEST(IFLA_VF_INFO);
71 ATTR_L(IFLA_VF_MAC, &vf_mac, sizeof(vf_mac));
72 ATTR_L(IFLA_VF_VLAN, &vf_vlan, sizeof(vf_vlan));
73 ATTR_L(IFLA_VF_TX_RATE, &vf_tx_rate, sizeof(vf_tx_rate));
74 ATTR_L(IFLA_VF_SPOOFCHK, &vf_spoofchk, sizeof(vf_spoofchk));
75 ATTR_L(IFLA_VF_LINK_STATE, &vf_link_state, sizeof(vf_link_state));
76 NEST_END(vfinfo);
77
78 vf_mac.vf = vf_vlan.vf = vf_tx_rate.vf = 1;
79 vf_spoofchk.vf = vf_link_state.vf = 1;
80
81 vfinfo = NEST(IFLA_VF_INFO);
82 ATTR_L(IFLA_VF_MAC, &vf_mac, sizeof(vf_mac));
83 ATTR_L(IFLA_VF_VLAN, &vf_vlan, sizeof(vf_vlan));
84 ATTR_L(IFLA_VF_TX_RATE, &vf_tx_rate, sizeof(vf_tx_rate));
85 ATTR_L(IFLA_VF_SPOOFCHK, &vf_spoofchk, sizeof(vf_spoofchk));
86 ATTR_L(IFLA_VF_LINK_STATE, &vf_link_state, sizeof(vf_link_state));
87 NEST_END(vfinfo);
88
89 NEST_END(vfinfo_list);
90
91 return h->nlmsg_len;
92 }
93
main(void)94 int main(void)
95 {
96 char buf[16384] = { 0 };
97 int msglen;
98 FILE *fp;
99
100 msglen = fill_vf_rate_test(buf, sizeof(buf));
101 if (msglen < 0) {
102 fprintf(stderr, "fill_vf_rate_test() failed!\n");
103 return 1;
104 }
105 fp = fopen("tests/ip/link/dev_wo_vf_rate.nl", "w");
106 if (!fp) {
107 perror("fopen()");
108 return 1;
109 }
110 if (fwrite(buf, msglen, 1, fp) != 1) {
111 perror("fwrite()");
112 return 1;
113 }
114 fclose(fp);
115 return 0;
116 }
117