libnl  3.4.0
inet6.c
1 /*
2  * lib/route/link/inet6.c AF_INET6 link operations
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation version 2.1
7  * of the License.
8  *
9  * Copyright (c) 2010 Thomas Graf <tgraf@suug.ch>
10  */
11 
12 #include <netlink-private/netlink.h>
13 #include <netlink/netlink.h>
14 #include <netlink/attr.h>
15 #include <netlink/route/rtnl.h>
16 #include <netlink/route/link/inet6.h>
17 #include <netlink-private/route/link/api.h>
18 
19 #define I6_ADDR_GEN_MODE_UNKNOWN UINT8_MAX
20 
21 struct inet6_data
22 {
23  uint32_t i6_flags;
24  struct ifla_cacheinfo i6_cacheinfo;
25  uint32_t i6_conf[DEVCONF_MAX];
26  struct in6_addr i6_token;
27  uint8_t i6_addr_gen_mode;
28 };
29 
30 static void *inet6_alloc(struct rtnl_link *link)
31 {
32  struct inet6_data *i6;
33 
34  i6 = calloc(1, sizeof(struct inet6_data));
35  if (i6)
36  i6->i6_addr_gen_mode = I6_ADDR_GEN_MODE_UNKNOWN;
37 
38  return i6;
39 }
40 
41 static void *inet6_clone(struct rtnl_link *link, void *data)
42 {
43  struct inet6_data *i6;
44 
45  if ((i6 = inet6_alloc(link)))
46  memcpy(i6, data, sizeof(*i6));
47 
48  return i6;
49 }
50 
51 static void inet6_free(struct rtnl_link *link, void *data)
52 {
53  free(data);
54 }
55 
56 static struct nla_policy inet6_policy[IFLA_INET6_MAX+1] = {
57  [IFLA_INET6_FLAGS] = { .type = NLA_U32 },
58  [IFLA_INET6_CACHEINFO] = { .minlen = sizeof(struct ifla_cacheinfo) },
59  [IFLA_INET6_CONF] = { .minlen = 4 },
60  [IFLA_INET6_STATS] = { .minlen = 8 },
61  [IFLA_INET6_ICMP6STATS] = { .minlen = 8 },
62  [IFLA_INET6_TOKEN] = { .minlen = sizeof(struct in6_addr) },
63  [IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 },
64 };
65 
66 static const uint8_t map_stat_id_from_IPSTATS_MIB_v1[__IPSTATS_MIB_MAX] = {
67  /* 14a196807482e6fc74f15fc03176d5c08880588f^:include/linux/snmp.h
68  * version before the API change in commit 14a196807482e6fc74f15fc03176d5c08880588f.
69  * This version was valid since commit edf391ff17232f097d72441c9ad467bcb3b5db18, which
70  * predates support for parsing IFLA_PROTINFO in libnl3. Such an even older meaning of
71  * the flags is not supported in libnl3. */
72  [ 1] = RTNL_LINK_IP6_INPKTS, /* IPSTATS_MIB_INPKTS */
73  [ 2] = RTNL_LINK_IP6_INHDRERRORS, /* IPSTATS_MIB_INHDRERRORS */
74  [ 3] = RTNL_LINK_IP6_INTOOBIGERRORS, /* IPSTATS_MIB_INTOOBIGERRORS */
75  [ 4] = RTNL_LINK_IP6_INNOROUTES, /* IPSTATS_MIB_INNOROUTES */
76  [ 5] = RTNL_LINK_IP6_INADDRERRORS, /* IPSTATS_MIB_INADDRERRORS */
77  [ 6] = RTNL_LINK_IP6_INUNKNOWNPROTOS, /* IPSTATS_MIB_INUNKNOWNPROTOS */
78  [ 7] = RTNL_LINK_IP6_INTRUNCATEDPKTS, /* IPSTATS_MIB_INTRUNCATEDPKTS */
79  [ 8] = RTNL_LINK_IP6_INDISCARDS, /* IPSTATS_MIB_INDISCARDS */
80  [ 9] = RTNL_LINK_IP6_INDELIVERS, /* IPSTATS_MIB_INDELIVERS */
81  [10] = RTNL_LINK_IP6_OUTFORWDATAGRAMS, /* IPSTATS_MIB_OUTFORWDATAGRAMS */
82  [11] = RTNL_LINK_IP6_OUTPKTS, /* IPSTATS_MIB_OUTPKTS */
83  [12] = RTNL_LINK_IP6_OUTDISCARDS, /* IPSTATS_MIB_OUTDISCARDS */
84  [13] = RTNL_LINK_IP6_OUTNOROUTES, /* IPSTATS_MIB_OUTNOROUTES */
85  [14] = RTNL_LINK_IP6_REASMTIMEOUT, /* IPSTATS_MIB_REASMTIMEOUT */
86  [15] = RTNL_LINK_IP6_REASMREQDS, /* IPSTATS_MIB_REASMREQDS */
87  [16] = RTNL_LINK_IP6_REASMOKS, /* IPSTATS_MIB_REASMOKS */
88  [17] = RTNL_LINK_IP6_REASMFAILS, /* IPSTATS_MIB_REASMFAILS */
89  [18] = RTNL_LINK_IP6_FRAGOKS, /* IPSTATS_MIB_FRAGOKS */
90  [19] = RTNL_LINK_IP6_FRAGFAILS, /* IPSTATS_MIB_FRAGFAILS */
91  [20] = RTNL_LINK_IP6_FRAGCREATES, /* IPSTATS_MIB_FRAGCREATES */
92  [21] = RTNL_LINK_IP6_INMCASTPKTS, /* IPSTATS_MIB_INMCASTPKTS */
93  [22] = RTNL_LINK_IP6_OUTMCASTPKTS, /* IPSTATS_MIB_OUTMCASTPKTS */
94  [23] = RTNL_LINK_IP6_INBCASTPKTS, /* IPSTATS_MIB_INBCASTPKTS */
95  [24] = RTNL_LINK_IP6_OUTBCASTPKTS, /* IPSTATS_MIB_OUTBCASTPKTS */
96  [25] = RTNL_LINK_IP6_INOCTETS, /* IPSTATS_MIB_INOCTETS */
97  [26] = RTNL_LINK_IP6_OUTOCTETS, /* IPSTATS_MIB_OUTOCTETS */
98  [27] = RTNL_LINK_IP6_INMCASTOCTETS, /* IPSTATS_MIB_INMCASTOCTETS */
99  [28] = RTNL_LINK_IP6_OUTMCASTOCTETS, /* IPSTATS_MIB_OUTMCASTOCTETS */
100  [29] = RTNL_LINK_IP6_INBCASTOCTETS, /* IPSTATS_MIB_INBCASTOCTETS */
101  [30] = RTNL_LINK_IP6_OUTBCASTOCTETS, /* IPSTATS_MIB_OUTBCASTOCTETS */
102 };
103 
104 static const uint8_t map_stat_id_from_IPSTATS_MIB_v2[__IPSTATS_MIB_MAX] = {
105  /* d8ec26d7f8287f5788a494f56e8814210f0e64be:include/uapi/linux/snmp.h
106  * version since the API change in commit 14a196807482e6fc74f15fc03176d5c08880588f */
107  [ 1] = RTNL_LINK_IP6_INPKTS, /* IPSTATS_MIB_INPKTS */
108  [ 2] = RTNL_LINK_IP6_INOCTETS, /* IPSTATS_MIB_INOCTETS */
109  [ 3] = RTNL_LINK_IP6_INDELIVERS, /* IPSTATS_MIB_INDELIVERS */
110  [ 4] = RTNL_LINK_IP6_OUTFORWDATAGRAMS, /* IPSTATS_MIB_OUTFORWDATAGRAMS */
111  [ 5] = RTNL_LINK_IP6_OUTPKTS, /* IPSTATS_MIB_OUTPKTS */
112  [ 6] = RTNL_LINK_IP6_OUTOCTETS, /* IPSTATS_MIB_OUTOCTETS */
113  [ 7] = RTNL_LINK_IP6_INHDRERRORS, /* IPSTATS_MIB_INHDRERRORS */
114  [ 8] = RTNL_LINK_IP6_INTOOBIGERRORS, /* IPSTATS_MIB_INTOOBIGERRORS */
115  [ 9] = RTNL_LINK_IP6_INNOROUTES, /* IPSTATS_MIB_INNOROUTES */
116  [10] = RTNL_LINK_IP6_INADDRERRORS, /* IPSTATS_MIB_INADDRERRORS */
117  [11] = RTNL_LINK_IP6_INUNKNOWNPROTOS, /* IPSTATS_MIB_INUNKNOWNPROTOS */
118  [12] = RTNL_LINK_IP6_INTRUNCATEDPKTS, /* IPSTATS_MIB_INTRUNCATEDPKTS */
119  [13] = RTNL_LINK_IP6_INDISCARDS, /* IPSTATS_MIB_INDISCARDS */
120  [14] = RTNL_LINK_IP6_OUTDISCARDS, /* IPSTATS_MIB_OUTDISCARDS */
121  [15] = RTNL_LINK_IP6_OUTNOROUTES, /* IPSTATS_MIB_OUTNOROUTES */
122  [16] = RTNL_LINK_IP6_REASMTIMEOUT, /* IPSTATS_MIB_REASMTIMEOUT */
123  [17] = RTNL_LINK_IP6_REASMREQDS, /* IPSTATS_MIB_REASMREQDS */
124  [18] = RTNL_LINK_IP6_REASMOKS, /* IPSTATS_MIB_REASMOKS */
125  [19] = RTNL_LINK_IP6_REASMFAILS, /* IPSTATS_MIB_REASMFAILS */
126  [20] = RTNL_LINK_IP6_FRAGOKS, /* IPSTATS_MIB_FRAGOKS */
127  [21] = RTNL_LINK_IP6_FRAGFAILS, /* IPSTATS_MIB_FRAGFAILS */
128  [22] = RTNL_LINK_IP6_FRAGCREATES, /* IPSTATS_MIB_FRAGCREATES */
129  [23] = RTNL_LINK_IP6_INMCASTPKTS, /* IPSTATS_MIB_INMCASTPKTS */
130  [24] = RTNL_LINK_IP6_OUTMCASTPKTS, /* IPSTATS_MIB_OUTMCASTPKTS */
131  [25] = RTNL_LINK_IP6_INBCASTPKTS, /* IPSTATS_MIB_INBCASTPKTS */
132  [26] = RTNL_LINK_IP6_OUTBCASTPKTS, /* IPSTATS_MIB_OUTBCASTPKTS */
133  [27] = RTNL_LINK_IP6_INMCASTOCTETS, /* IPSTATS_MIB_INMCASTOCTETS */
134  [28] = RTNL_LINK_IP6_OUTMCASTOCTETS, /* IPSTATS_MIB_OUTMCASTOCTETS */
135  [29] = RTNL_LINK_IP6_INBCASTOCTETS, /* IPSTATS_MIB_INBCASTOCTETS */
136  [30] = RTNL_LINK_IP6_OUTBCASTOCTETS, /* IPSTATS_MIB_OUTBCASTOCTETS */
137  [31] = RTNL_LINK_IP6_CSUMERRORS, /* IPSTATS_MIB_CSUMERRORS */
138  [32] = RTNL_LINK_IP6_NOECTPKTS, /* IPSTATS_MIB_NOECTPKTS */
139  [33] = RTNL_LINK_IP6_ECT1PKTS, /* IPSTATS_MIB_ECT1PKTS */
140  [34] = RTNL_LINK_IP6_ECT0PKTS, /* IPSTATS_MIB_ECT0PKTS */
141  [35] = RTNL_LINK_IP6_CEPKTS, /* IPSTATS_MIB_CEPKTS */
142 };
143 
144 static int inet6_parse_protinfo(struct rtnl_link *link, struct nlattr *attr,
145  void *data)
146 {
147  struct inet6_data *i6 = data;
148  struct nlattr *tb[IFLA_INET6_MAX+1];
149  int err;
150 
151  err = nla_parse_nested(tb, IFLA_INET6_MAX, attr, inet6_policy);
152  if (err < 0)
153  return err;
154  if (tb[IFLA_INET6_CONF] && nla_len(tb[IFLA_INET6_CONF]) % 4)
155  return -EINVAL;
156  if (tb[IFLA_INET6_STATS] && nla_len(tb[IFLA_INET6_STATS]) % 8)
157  return -EINVAL;
158  if (tb[IFLA_INET6_ICMP6STATS] && nla_len(tb[IFLA_INET6_ICMP6STATS]) % 8)
159  return -EINVAL;
160 
161  if (tb[IFLA_INET6_FLAGS])
162  i6->i6_flags = nla_get_u32(tb[IFLA_INET6_FLAGS]);
163 
164  if (tb[IFLA_INET6_CACHEINFO])
165  nla_memcpy(&i6->i6_cacheinfo, tb[IFLA_INET6_CACHEINFO],
166  sizeof(i6->i6_cacheinfo));
167 
168  if (tb[IFLA_INET6_CONF])
169  nla_memcpy(&i6->i6_conf, tb[IFLA_INET6_CONF],
170  sizeof(i6->i6_conf));
171 
172  if (tb[IFLA_INET6_TOKEN])
173  nla_memcpy(&i6->i6_token, tb[IFLA_INET6_TOKEN],
174  sizeof(struct in6_addr));
175 
176  if (tb[IFLA_INET6_ADDR_GEN_MODE])
177  i6->i6_addr_gen_mode = nla_get_u8 (tb[IFLA_INET6_ADDR_GEN_MODE]);
178 
179  /*
180  * Due to 32bit data alignment, these addresses must be copied to an
181  * aligned location prior to access.
182  */
183  if (tb[IFLA_INET6_STATS]) {
184  unsigned char *cnt = nla_data(tb[IFLA_INET6_STATS]);
185  uint64_t stat;
186  int i;
187  int len = nla_len(tb[IFLA_INET6_STATS]) / 8;
188  const uint8_t *map_stat_id = map_stat_id_from_IPSTATS_MIB_v2;
189 
190  if (len < 32 ||
191  (tb[IFLA_INET6_ICMP6STATS] && nla_len(tb[IFLA_INET6_ICMP6STATS]) < 6)) {
192  /* kernel commit 14a196807482e6fc74f15fc03176d5c08880588f reordered the values.
193  * The later commit 6a5dc9e598fe90160fee7de098fa319665f5253e added values
194  * IPSTATS_MIB_CSUMERRORS/ICMP6_MIB_CSUMERRORS. If the netlink is shorter
195  * then this, assume that the kernel uses the previous meaning of the
196  * enumeration. */
197  map_stat_id = map_stat_id_from_IPSTATS_MIB_v1;
198  }
199 
200  len = min_t(int, __IPSTATS_MIB_MAX, len);
201  for (i = 1; i < len; i++) {
202  memcpy(&stat, &cnt[i * sizeof(stat)], sizeof(stat));
203  rtnl_link_set_stat(link, map_stat_id[i], stat);
204  }
205  }
206 
207  if (tb[IFLA_INET6_ICMP6STATS]) {
208  unsigned char *cnt = nla_data(tb[IFLA_INET6_ICMP6STATS]);
209  uint64_t stat;
210  int i;
211  int len = min_t(int, __ICMP6_MIB_MAX, nla_len(tb[IFLA_INET6_ICMP6STATS]) / 8);
212 
213  for (i = 1; i < len; i++) {
214  memcpy(&stat, &cnt[i * sizeof(stat)], sizeof(stat));
216  stat);
217  }
218  }
219 
220  return 0;
221 }
222 
223 static int inet6_fill_af(struct rtnl_link *link, struct nl_msg *msg, void *data)
224 {
225  struct inet6_data *id = data;
226 
227  if (id->i6_addr_gen_mode != I6_ADDR_GEN_MODE_UNKNOWN)
228  NLA_PUT_U8(msg, IFLA_INET6_ADDR_GEN_MODE, id->i6_addr_gen_mode);
229 
230  return 0;
231 
232 nla_put_failure:
233  return -NLE_MSGSIZE;
234 }
235 
236 /* These live in include/net/if_inet6.h and should be moved to include/linux */
237 #define IF_RA_OTHERCONF 0x80
238 #define IF_RA_MANAGED 0x40
239 #define IF_RA_RCVD 0x20
240 #define IF_RS_SENT 0x10
241 #define IF_READY 0x80000000
242 
243 static const struct trans_tbl inet6_flags[] = {
244  __ADD(IF_RA_OTHERCONF, ra_otherconf),
245  __ADD(IF_RA_MANAGED, ra_managed),
246  __ADD(IF_RA_RCVD, ra_rcvd),
247  __ADD(IF_RS_SENT, rs_sent),
248  __ADD(IF_READY, ready),
249 };
250 
251 char *rtnl_link_inet6_flags2str(int flags, char *buf, size_t len)
252 {
253  return __flags2str(flags, buf, len, inet6_flags,
254  ARRAY_SIZE(inet6_flags));
255 }
256 
257 int rtnl_link_inet6_str2flags(const char *name)
258 {
259  return __str2flags(name, inet6_flags, ARRAY_SIZE(inet6_flags));
260 }
261 
262 static const struct trans_tbl inet6_devconf[] = {
263  __ADD(DEVCONF_FORWARDING, forwarding),
264  __ADD(DEVCONF_HOPLIMIT, hoplimit),
265  __ADD(DEVCONF_MTU6, mtu6),
266  __ADD(DEVCONF_ACCEPT_RA, accept_ra),
267  __ADD(DEVCONF_ACCEPT_REDIRECTS, accept_redirects),
268  __ADD(DEVCONF_AUTOCONF, autoconf),
269  __ADD(DEVCONF_DAD_TRANSMITS, dad_transmits),
270  __ADD(DEVCONF_RTR_SOLICITS, rtr_solicits),
271  __ADD(DEVCONF_RTR_SOLICIT_INTERVAL, rtr_solicit_interval),
272  __ADD(DEVCONF_RTR_SOLICIT_DELAY, rtr_solicit_delay),
273  __ADD(DEVCONF_USE_TEMPADDR, use_tempaddr),
274  __ADD(DEVCONF_TEMP_VALID_LFT, temp_valid_lft),
275  __ADD(DEVCONF_TEMP_PREFERED_LFT, temp_prefered_lft),
276  __ADD(DEVCONF_REGEN_MAX_RETRY, regen_max_retry),
277  __ADD(DEVCONF_MAX_DESYNC_FACTOR, max_desync_factor),
278  __ADD(DEVCONF_MAX_ADDRESSES, max_addresses),
279  __ADD(DEVCONF_FORCE_MLD_VERSION, force_mld_version),
280  __ADD(DEVCONF_ACCEPT_RA_DEFRTR, accept_ra_defrtr),
281  __ADD(DEVCONF_ACCEPT_RA_PINFO, accept_ra_pinfo),
282  __ADD(DEVCONF_ACCEPT_RA_RTR_PREF, accept_ra_rtr_pref),
283  __ADD(DEVCONF_RTR_PROBE_INTERVAL, rtr_probe_interval),
284  __ADD(DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN, accept_ra_rt_info),
285  __ADD(DEVCONF_PROXY_NDP, proxy_ndp),
286  __ADD(DEVCONF_OPTIMISTIC_DAD, optimistic_dad),
287  __ADD(DEVCONF_ACCEPT_SOURCE_ROUTE, accept_source_route),
288  __ADD(DEVCONF_MC_FORWARDING, mc_forwarding),
289  __ADD(DEVCONF_DISABLE_IPV6, disable_ipv6),
290  __ADD(DEVCONF_ACCEPT_DAD, accept_dad),
291  __ADD(DEVCONF_FORCE_TLLAO, force_tllao),
292 };
293 
294 static char *inet6_devconf2str(int type, char *buf, size_t len)
295 {
296  return __type2str(type, buf, len, inet6_devconf,
297  ARRAY_SIZE(inet6_devconf));
298 }
299 
300 static const struct trans_tbl inet6_addr_gen_mode[] = {
301  __ADD(IN6_ADDR_GEN_MODE_EUI64, eui64),
302  __ADD(IN6_ADDR_GEN_MODE_NONE, none),
303  __ADD(IN6_ADDR_GEN_MODE_STABLE_PRIVACY, stable_privacy),
304 };
305 
306 const char *rtnl_link_inet6_addrgenmode2str(uint8_t mode, char *buf, size_t len)
307 {
308  return __type2str(mode, buf, len, inet6_addr_gen_mode,
309  ARRAY_SIZE(inet6_addr_gen_mode));
310 }
311 
312 uint8_t rtnl_link_inet6_str2addrgenmode(const char *mode)
313 {
314  return (uint8_t) __str2type(mode, inet6_addr_gen_mode,
315  ARRAY_SIZE(inet6_addr_gen_mode));
316 }
317 
318 static void inet6_dump_details(struct rtnl_link *link,
319  struct nl_dump_params *p, void *data)
320 {
321  struct inet6_data *i6 = data;
322  struct nl_addr *addr;
323  char buf[64], buf2[64];
324  int i, n = 0;
325 
326  nl_dump_line(p, " ipv6 max-reasm-len %s",
327  nl_size2str(i6->i6_cacheinfo.max_reasm_len, buf, sizeof(buf)));
328 
329  nl_dump(p, " <%s>\n",
330  rtnl_link_inet6_flags2str(i6->i6_flags, buf, sizeof(buf)));
331 
332 
333  nl_dump_line(p, " create-stamp %.2fs reachable-time %s",
334  (double) i6->i6_cacheinfo.tstamp / 100.,
335  nl_msec2str(i6->i6_cacheinfo.reachable_time, buf, sizeof(buf)));
336 
337  nl_dump(p, " retrans-time %s\n",
338  nl_msec2str(i6->i6_cacheinfo.retrans_time, buf, sizeof(buf)));
339 
340  addr = nl_addr_build(AF_INET6, &i6->i6_token, sizeof(i6->i6_token));
341  nl_dump(p, " token %s\n",
342  nl_addr2str(addr, buf, sizeof(buf)));
343  nl_addr_put(addr);
344 
345  nl_dump(p, " link-local address mode %s\n",
346  rtnl_link_inet6_addrgenmode2str(i6->i6_addr_gen_mode,
347  buf, sizeof(buf)));
348 
349  nl_dump_line(p, " devconf:\n");
350  nl_dump_line(p, " ");
351 
352  for (i = 0; i < DEVCONF_MAX; i++) {
353  uint32_t value = i6->i6_conf[i];
354  int x, offset;
355 
356  switch (i) {
357  case DEVCONF_TEMP_VALID_LFT:
358  case DEVCONF_TEMP_PREFERED_LFT:
359  nl_msec2str((uint64_t) value * 1000., buf2, sizeof(buf2));
360  break;
361 
362  case DEVCONF_RTR_PROBE_INTERVAL:
363  case DEVCONF_RTR_SOLICIT_INTERVAL:
364  case DEVCONF_RTR_SOLICIT_DELAY:
365  nl_msec2str(value, buf2, sizeof(buf2));
366  break;
367 
368  default:
369  snprintf(buf2, sizeof(buf2), "%u", value);
370  break;
371 
372  }
373 
374  inet6_devconf2str(i, buf, sizeof(buf));
375 
376  offset = 23 - strlen(buf2);
377  if (offset < 0)
378  offset = 0;
379 
380  for (x = strlen(buf); x < offset; x++)
381  buf[x] = ' ';
382 
383  strncpy(&buf[offset], buf2, strlen(buf2));
384 
385  nl_dump_line(p, "%s", buf);
386 
387  if (++n == 3) {
388  nl_dump(p, "\n");
389  nl_dump_line(p, " ");
390  n = 0;
391  } else
392  nl_dump(p, " ");
393  }
394 
395  if (n != 0)
396  nl_dump(p, "\n");
397 }
398 
399 static void inet6_dump_stats(struct rtnl_link *link,
400  struct nl_dump_params *p, void *data)
401 {
402  double octets;
403  char *octetsUnit;
404 
405  nl_dump(p, " IPv6: InPkts InOctets "
406  " InDiscards InDelivers\n");
407  nl_dump(p, " %18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_INPKTS]);
408 
409  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INOCTETS],
410  &octetsUnit);
411  if (octets)
412  nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
413  else
414  nl_dump(p, "%16" PRIu64 " B ", 0);
415 
416  nl_dump(p, "%18" PRIu64 " %18" PRIu64 "\n",
417  link->l_stats[RTNL_LINK_IP6_INDISCARDS],
418  link->l_stats[RTNL_LINK_IP6_INDELIVERS]);
419 
420  nl_dump(p, " OutPkts OutOctets "
421  " OutDiscards OutForwards\n");
422 
423  nl_dump(p, " %18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_OUTPKTS]);
424 
425  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTOCTETS],
426  &octetsUnit);
427  if (octets)
428  nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
429  else
430  nl_dump(p, "%16" PRIu64 " B ", 0);
431 
432  nl_dump(p, "%18" PRIu64 " %18" PRIu64 "\n",
433  link->l_stats[RTNL_LINK_IP6_OUTDISCARDS],
434  link->l_stats[RTNL_LINK_IP6_OUTFORWDATAGRAMS]);
435 
436  nl_dump(p, " InMcastPkts InMcastOctets "
437  " InBcastPkts InBcastOctests\n");
438 
439  nl_dump(p, " %18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_INMCASTPKTS]);
440 
441  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INMCASTOCTETS],
442  &octetsUnit);
443  if (octets)
444  nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
445  else
446  nl_dump(p, "%16" PRIu64 " B ", 0);
447 
448  nl_dump(p, "%18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_INBCASTPKTS]);
449  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_INBCASTOCTETS],
450  &octetsUnit);
451  if (octets)
452  nl_dump(p, "%14.2f %3s\n", octets, octetsUnit);
453  else
454  nl_dump(p, "%16" PRIu64 " B\n", 0);
455 
456  nl_dump(p, " OutMcastPkts OutMcastOctets "
457  " OutBcastPkts OutBcastOctests\n");
458 
459  nl_dump(p, " %18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_OUTMCASTPKTS]);
460 
461  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTMCASTOCTETS],
462  &octetsUnit);
463  if (octets)
464  nl_dump(p, "%14.2f %3s ", octets, octetsUnit);
465  else
466  nl_dump(p, "%16" PRIu64 " B ", 0);
467 
468  nl_dump(p, "%18" PRIu64 " ", link->l_stats[RTNL_LINK_IP6_OUTBCASTPKTS]);
469  octets = nl_cancel_down_bytes(link->l_stats[RTNL_LINK_IP6_OUTBCASTOCTETS],
470  &octetsUnit);
471  if (octets)
472  nl_dump(p, "%14.2f %3s\n", octets, octetsUnit);
473  else
474  nl_dump(p, "%16" PRIu64 " B\n", 0);
475 
476  nl_dump(p, " ReasmOKs ReasmFails "
477  " ReasmReqds ReasmTimeout\n");
478  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
479  link->l_stats[RTNL_LINK_IP6_REASMOKS],
480  link->l_stats[RTNL_LINK_IP6_REASMFAILS],
481  link->l_stats[RTNL_LINK_IP6_REASMREQDS],
482  link->l_stats[RTNL_LINK_IP6_REASMTIMEOUT]);
483 
484  nl_dump(p, " FragOKs FragFails "
485  " FragCreates\n");
486  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
487  link->l_stats[RTNL_LINK_IP6_FRAGOKS],
488  link->l_stats[RTNL_LINK_IP6_FRAGFAILS],
489  link->l_stats[RTNL_LINK_IP6_FRAGCREATES]);
490 
491  nl_dump(p, " InHdrErrors InTooBigErrors "
492  " InNoRoutes InAddrErrors\n");
493  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
494  link->l_stats[RTNL_LINK_IP6_INHDRERRORS],
495  link->l_stats[RTNL_LINK_IP6_INTOOBIGERRORS],
496  link->l_stats[RTNL_LINK_IP6_INNOROUTES],
497  link->l_stats[RTNL_LINK_IP6_INADDRERRORS]);
498 
499  nl_dump(p, " InUnknownProtos InTruncatedPkts "
500  " OutNoRoutes InCsumErrors\n");
501  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
502  link->l_stats[RTNL_LINK_IP6_INUNKNOWNPROTOS],
503  link->l_stats[RTNL_LINK_IP6_INTRUNCATEDPKTS],
504  link->l_stats[RTNL_LINK_IP6_OUTNOROUTES],
505  link->l_stats[RTNL_LINK_IP6_CSUMERRORS]);
506 
507  nl_dump(p, " InNoECTPkts InECT1Pkts "
508  " InECT0Pkts InCEPkts\n");
509  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
510  link->l_stats[RTNL_LINK_IP6_NOECTPKTS],
511  link->l_stats[RTNL_LINK_IP6_ECT1PKTS],
512  link->l_stats[RTNL_LINK_IP6_ECT0PKTS],
513  link->l_stats[RTNL_LINK_IP6_CEPKTS]);
514 
515  nl_dump(p, " ICMPv6: InMsgs InErrors "
516  " OutMsgs OutErrors InCsumErrors\n");
517  nl_dump(p, " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 " %18" PRIu64 "\n",
518  link->l_stats[RTNL_LINK_ICMP6_INMSGS],
519  link->l_stats[RTNL_LINK_ICMP6_INERRORS],
520  link->l_stats[RTNL_LINK_ICMP6_OUTMSGS],
521  link->l_stats[RTNL_LINK_ICMP6_OUTERRORS],
522  link->l_stats[RTNL_LINK_ICMP6_CSUMERRORS]);
523 }
524 
525 static const struct nla_policy protinfo_policy = {
526  .type = NLA_NESTED,
527 };
528 
529 static struct rtnl_link_af_ops inet6_ops = {
530  .ao_family = AF_INET6,
531  .ao_alloc = &inet6_alloc,
532  .ao_clone = &inet6_clone,
533  .ao_free = &inet6_free,
534  .ao_parse_protinfo = &inet6_parse_protinfo,
535  .ao_parse_af = &inet6_parse_protinfo,
536  .ao_fill_af = &inet6_fill_af,
537  .ao_dump[NL_DUMP_DETAILS] = &inet6_dump_details,
538  .ao_dump[NL_DUMP_STATS] = &inet6_dump_stats,
539  .ao_protinfo_policy = &protinfo_policy,
540 };
541 
542 /**
543  * Return IPv6 specific flags
544  * @arg link Link object
545  * @arg out_flags Flags on success
546  *
547  * Returns the link's IPv6 flags.
548  *
549  * @return 0 on success
550  * @return -NLE_NOATTR configuration setting not available
551  */
552 int rtnl_link_inet6_get_flags(struct rtnl_link *link, uint32_t* out_flags)
553 {
554  struct inet6_data *id = NULL;
555 
556  if (!(id = rtnl_link_af_data(link, &inet6_ops)))
557  return -NLE_NOATTR;
558 
559  *out_flags = id->i6_flags;
560  return 0;
561 }
562 
563 /**
564  * Set IPv6 specific flags
565  * @arg link Link object
566  * @arg flags Flags to set
567  *
568  * Sets the link's IPv6 specific flags. Overwrites currently set flags.
569  *
570  * @return 0 on success
571  * @return -NLE_NOMEM could not allocate inet6 data
572  */
573 int rtnl_link_inet6_set_flags(struct rtnl_link *link, uint32_t flags)
574 {
575  struct inet6_data *id;
576 
577  if (!(id = rtnl_link_af_alloc(link, &inet6_ops)))
578  return -NLE_NOMEM;
579 
580  id->i6_flags = flags;
581  return 0;
582 }
583 
584 /**
585  * Get IPv6 tokenized interface identifier
586  * @arg link Link object
587  * @arg token Tokenized interface identifier on success
588  *
589  * Returns the link's IPv6 tokenized interface identifier.
590  *
591  * @return 0 on success
592  * @return -NLE_NOMEM failure to allocate struct nl_addr result
593  * @return -NLE_NOATTR configuration setting not available
594  * @return -NLE_NOADDR tokenized interface identifier is not set
595  */
596 int rtnl_link_inet6_get_token(struct rtnl_link *link, struct nl_addr **addr)
597 {
598  struct inet6_data *id;
599 
600  if (!(id = rtnl_link_af_data(link, &inet6_ops)))
601  return -NLE_NOATTR;
602 
603  *addr = nl_addr_build(AF_INET6, &id->i6_token, sizeof(id->i6_token));
604  if (!*addr)
605  return -NLE_NOMEM;
606  if (nl_addr_iszero(*addr)) {
607  nl_addr_put(*addr);
608  *addr = NULL;
609  return -NLE_NOADDR;
610  }
611 
612  return 0;
613 }
614 
615 /**
616  * Set IPv6 tokenized interface identifier
617  * @arg link Link object
618  * @arg token Tokenized interface identifier
619  *
620  * Sets the link's IPv6 tokenized interface identifier.
621  *
622  * @return 0 on success
623  * @return -NLE_NOMEM could not allocate inet6 data
624  * @return -NLE_INVAL addr is not a valid inet6 address
625  */
626 int rtnl_link_inet6_set_token(struct rtnl_link *link, struct nl_addr *addr)
627 {
628  struct inet6_data *id;
629 
630  if ((nl_addr_get_family(addr) != AF_INET6) ||
631  (nl_addr_get_len(addr) != sizeof(id->i6_token)))
632  return -NLE_INVAL;
633 
634  if (!(id = rtnl_link_af_alloc(link, &inet6_ops)))
635  return -NLE_NOMEM;
636 
637  memcpy(&id->i6_token, nl_addr_get_binary_addr(addr),
638  sizeof(id->i6_token));
639  return 0;
640 }
641 
642 /**
643  * Get IPv6 link-local address generation mode
644  * @arg link Link object
645  * @arg mode Generation mode on success
646  *
647  * Returns the link's IPv6 link-local address generation mode.
648  *
649  * @return 0 on success
650  * @return -NLE_NOATTR configuration setting not available
651  * @return -NLE_INVAL generation mode unknown. If the link was received via
652  * netlink, it means that address generation mode is not
653  * supported by the kernel.
654  */
655 int rtnl_link_inet6_get_addr_gen_mode(struct rtnl_link *link, uint8_t *mode)
656 {
657  struct inet6_data *id;
658 
659  if (!(id = rtnl_link_af_data(link, &inet6_ops)))
660  return -NLE_NOATTR;
661 
662  if (id->i6_addr_gen_mode == I6_ADDR_GEN_MODE_UNKNOWN)
663  return -NLE_INVAL;
664 
665  *mode = id->i6_addr_gen_mode;
666  return 0;
667 }
668 
669 /**
670  * Set IPv6 link-local address generation mode
671  * @arg link Link object
672  * @arg mode Generation mode
673  *
674  * Sets the link's IPv6 link-local address generation mode.
675  *
676  * @return 0 on success
677  * @return -NLE_NOMEM could not allocate inet6 data
678  */
679 int rtnl_link_inet6_set_addr_gen_mode(struct rtnl_link *link, uint8_t mode)
680 {
681  struct inet6_data *id;
682 
683  if (!(id = rtnl_link_af_alloc(link, &inet6_ops)))
684  return -NLE_NOMEM;
685 
686  id->i6_addr_gen_mode = mode;
687  return 0;
688 }
689 
690 static void __init inet6_init(void)
691 {
692  rtnl_link_af_register(&inet6_ops);
693 }
694 
695 static void __exit inet6_exit(void)
696 {
697  rtnl_link_af_unregister(&inet6_ops);
698 }
8 bit integer
Definition: attr.h:41
Attribute validation policy.
Definition: attr.h:69
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
Definition: attr.c:606
struct nl_addr * nl_addr_build(int family, const void *buf, size_t size)
Allocate abstract address based on a binary address.
Definition: addr.c:217
char * nl_msec2str(uint64_t msec, char *buf, size_t len)
Convert milliseconds to a character string.
Definition: utils.c:594
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
Definition: attr.c:706
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
Definition: attr.h:199
Dump all attributes but no statistics.
Definition: types.h:23
int nl_addr_iszero(const struct nl_addr *addr)
Returns true if the address consists of all zeros.
Definition: addr.c:642
char * nl_size2str(const size_t size, char *buf, const size_t len)
Convert a size toa character string.
Definition: utils.c:357
double nl_cancel_down_bytes(unsigned long long l, char **unit)
Cancel down a byte counter.
Definition: utils.c:169
int nla_memcpy(void *dest, const struct nlattr *src, int count)
Copy attribute payload to another memory area.
Definition: attr.c:353
int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, struct nla_policy *policy)
Create attribute index based on nested attribute.
Definition: attr.c:999
void * nla_data(const struct nlattr *nla)
Return pointer to the payload section.
Definition: attr.c:120
int nla_len(const struct nlattr *nla)
Return length of the payload .
Definition: attr.c:131
Nested attributes.
Definition: attr.h:48
void nl_addr_put(struct nl_addr *addr)
Decrease the reference counter of an abstract address.
Definition: addr.c:539
uint16_t type
Type of attribute or NLA_UNSPEC.
Definition: attr.h:71
32 bit integer
Definition: attr.h:43
Dumping parameters.
Definition: types.h:33
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:961
unsigned int nl_addr_get_len(const struct nl_addr *addr)
Get length of binary address of abstract address object.
Definition: addr.c:945
Dump all attributes including statistics.
Definition: types.h:24
void * nl_addr_get_binary_addr(const struct nl_addr *addr)
Get binary address of abstract address object.
Definition: addr.c:933
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
Definition: addr.c:991
int nl_addr_get_family(const struct nl_addr *addr)
Return address family.
Definition: addr.c:885