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 (at) 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 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 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
