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8465de90 RP |
1 | #!/usr/bin/python |
2 | # | |
3 | # Copyright 2014 Cumulus Networks, Inc. All rights reserved. | |
4 | # Author: Roopa Prabhu, roopa@cumulusnetworks.com | |
5 | # | |
6 | ||
7 | import os | |
5c5a7b93 | 8 | import signal |
32f6e6ca | 9 | import errno |
5c5a7b93 | 10 | import subprocess |
8465de90 RP |
11 | import atexit |
12 | from ifupdown.iface import * | |
54616d3f | 13 | import ifupdown.policymanager as policymanager |
8465de90 | 14 | import ifupdownaddons |
768b4ec5 | 15 | import ifupdown.rtnetlink_api as rtnetlink_api |
fc5e1735 | 16 | import ifupdown.ifupdownflags as ifupdownflags |
8465de90 RP |
17 | from ifupdownaddons.modulebase import moduleBase |
18 | from ifupdownaddons.bondutil import bondutil | |
19 | from ifupdownaddons.iproute2 import iproute2 | |
122ef35b | 20 | from ifupdownaddons.dhclient import dhclient |
8465de90 | 21 | |
8ad5c767 RP |
22 | class vrfPrivFlags: |
23 | PROCESSED = 0x1 | |
24 | ||
8465de90 RP |
25 | class vrf(moduleBase): |
26 | """ ifupdown2 addon module to configure vrfs """ | |
27 | _modinfo = { 'mhelp' : 'vrf configuration module', | |
28 | 'attrs' : { | |
29 | 'vrf-table': | |
30 | {'help' : 'vrf device table id. key to ' + | |
31 | 'creating a vrf device', | |
32 | 'example': ['vrf-table-id 1']}, | |
33 | 'vrf': | |
34 | {'help' : 'vrf the interface is part of.', | |
35 | 'example': ['vrf blue']}}} | |
36 | ||
a1c23686 | 37 | iproute2_vrf_filename = '/etc/iproute2/rt_tables.d/ifupdown2_vrf_map.conf' |
8465de90 RP |
38 | iproute2_vrf_filehdr = '# This file is autogenerated by ifupdown2.\n' + \ |
39 | '# It contains the vrf name to table mapping.\n' + \ | |
6f2890fc RP |
40 | '# Reserved table range %s %s\n' |
41 | VRF_TABLE_START = 1001 | |
42 | VRF_TABLE_END = 5000 | |
8465de90 RP |
43 | |
44 | def __init__(self, *args, **kargs): | |
45 | ifupdownaddons.modulebase.moduleBase.__init__(self, *args, **kargs) | |
46 | self.ipcmd = None | |
47 | self.bondcmd = None | |
122ef35b | 48 | self.dhclientcmd = None |
8ad5c767 | 49 | self.name = self.__class__.__name__ |
fc5e1735 | 50 | if ifupdownflags.flags.PERFMODE: |
122ef35b RP |
51 | # if perf mode is set, remove vrf map file. |
52 | # start afresh. PERFMODE is set at boot | |
53 | if os.path.exists(self.iproute2_vrf_filename): | |
54 | try: | |
55 | self.logger.info('vrf: removing file %s' | |
56 | %self.iproute2_vrf_filename) | |
57 | os.remove(self.iproute2_vrf_filename) | |
58 | except Exception, e: | |
59 | self.logger.debug('vrf: removing file failed (%s)' | |
60 | %str(e)) | |
8465de90 RP |
61 | try: |
62 | ip_rules = self.exec_command('/sbin/ip rule show').splitlines() | |
63 | self.ip_rule_cache = [' '.join(r.split()) for r in ip_rules] | |
64 | except Exception, e: | |
65 | self.ip_rule_cache = [] | |
66 | self.logger.warn('%s' %str(e)) | |
67 | ||
68 | try: | |
69 | ip_rules = self.exec_command('/sbin/ip -6 rule show').splitlines() | |
70 | self.ip6_rule_cache = [' '.join(r.split()) for r in ip_rules] | |
71 | except Exception, e: | |
72 | self.ip6_rule_cache = [] | |
73 | self.logger.warn('%s' %str(e)) | |
74 | ||
75 | #self.logger.debug("vrf: ip rule cache") | |
76 | #self.logger.info(self.ip_rule_cache) | |
77 | ||
78 | #self.logger.info("vrf: ip -6 rule cache") | |
79 | #self.logger.info(self.ip6_rule_cache) | |
80 | ||
05ac52f0 RP |
81 | self._iproute2_vrf_map_initialized = False |
82 | self.iproute2_vrf_map = {} | |
83 | self.iproute2_vrf_map_fd = None | |
84 | self.iproute2_vrf_map_sync_to_disk = False | |
85 | ||
86 | self.vrf_table_id_start = policymanager.policymanager_api.get_module_globals(module_name=self.__class__.__name__, attr='vrf-table-id-start') | |
87 | if not self.vrf_table_id_start: | |
88 | self.vrf_table_id_start = self.VRF_TABLE_START | |
89 | self.vrf_table_id_end = policymanager.policymanager_api.get_module_globals(module_name=self.__class__.__name__, attr='vrf-table-id-end') | |
90 | if not self.vrf_table_id_end: | |
91 | self.vrf_table_id_end = self.VRF_TABLE_END | |
92 | self.vrf_max_count = policymanager.policymanager_api.get_module_globals(module_name=self.__class__.__name__, attr='vrf-max-count') | |
93 | ||
94 | self.vrf_fix_local_table = True | |
95 | self.vrf_count = 0 | |
05ac52f0 | 96 | self.vrf_mgmt_devname = policymanager.policymanager_api.get_module_globals(module_name=self.__class__.__name__, attr='vrf-mgmt-devname') |
25e2386e | 97 | self.vrf_helper = policymanager.policymanager_api.get_module_globals(module_name=self.__class__.__name__, attr='vrf-helper') |
05ac52f0 RP |
98 | |
99 | def _iproute2_vrf_map_initialize(self): | |
100 | if self._iproute2_vrf_map_initialized: | |
101 | return | |
102 | ||
8465de90 RP |
103 | # XXX: check for vrf reserved overlap in /etc/iproute2/rt_tables |
104 | self.iproute2_vrf_map = {} | |
05ac52f0 | 105 | iproute2_vrf_map_force_rewrite = False |
8465de90 RP |
106 | # read or create /etc/iproute2/rt_tables.d/ifupdown2.vrf_map |
107 | if os.path.exists(self.iproute2_vrf_filename): | |
05ac52f0 RP |
108 | vrf_map_fd = open(self.iproute2_vrf_filename, 'r+') |
109 | lines = vrf_map_fd.readlines() | |
8465de90 RP |
110 | for l in lines: |
111 | l = l.strip() | |
112 | if l[0] == '#': | |
113 | continue | |
114 | try: | |
115 | (table, vrf_name) = l.strip().split() | |
05ac52f0 RP |
116 | if self.iproute2_vrf_map.get(int(table)): |
117 | # looks like the existing file has | |
118 | # duplicate entries, force rewrite of the | |
119 | # file | |
120 | iproute2_vrf_map_force_rewrite = True | |
121 | continue | |
122 | self.iproute2_vrf_map[int(table)] = vrf_name | |
8465de90 RP |
123 | except Exception, e: |
124 | self.logger.info('vrf: iproute2_vrf_map: unable to parse %s' | |
125 | %l) | |
126 | pass | |
8465de90 | 127 | |
05ac52f0 RP |
128 | vrfs = self.ipcmd.link_get_vrfs() |
129 | running_vrf_map = {} | |
130 | if vrfs: | |
131 | for v, lattrs in vrfs.iteritems(): | |
132 | table = lattrs.get('table', None) | |
133 | if table: | |
134 | running_vrf_map[int(table)] = v | |
135 | ||
4934af35 | 136 | if (not running_vrf_map or (running_vrf_map != self.iproute2_vrf_map)): |
05ac52f0 RP |
137 | self.iproute2_vrf_map = running_vrf_map |
138 | iproute2_vrf_map_force_rewrite = True | |
139 | ||
140 | self.iproute2_vrf_map_fd = None | |
141 | if iproute2_vrf_map_force_rewrite: | |
142 | # reopen the file and rewrite the map | |
143 | self._iproute2_vrf_map_open(True, False) | |
144 | else: | |
145 | self._iproute2_vrf_map_open(False, True) | |
8465de90 | 146 | |
05ac52f0 RP |
147 | self.iproute2_vrf_map_sync_to_disk = False |
148 | atexit.register(self._iproute2_vrf_map_sync_to_disk) | |
149 | ||
150 | self.logger.info("vrf: dumping iproute2_vrf_map") | |
151 | self.logger.info(self.iproute2_vrf_map) | |
6f2890fc RP |
152 | |
153 | last_used_vrf_table = None | |
154 | for t in range(self.vrf_table_id_start, | |
155 | self.vrf_table_id_end): | |
8465de90 RP |
156 | if not self.iproute2_vrf_map.get(t): |
157 | break | |
6f2890fc | 158 | last_used_vrf_table = t |
8465de90 | 159 | self.last_used_vrf_table = last_used_vrf_table |
05ac52f0 | 160 | self._iproute2_vrf_map_initialized = True |
09753350 | 161 | |
05ac52f0 RP |
162 | def _iproute2_vrf_map_sync_to_disk(self): |
163 | if not self.iproute2_vrf_map_sync_to_disk: | |
8465de90 | 164 | return |
05ac52f0 | 165 | self.logger.info('vrf: syncing table map to %s' |
8465de90 RP |
166 | %self.iproute2_vrf_filename) |
167 | with open(self.iproute2_vrf_filename, 'w') as f: | |
6f2890fc RP |
168 | f.write(self.iproute2_vrf_filehdr %(self.vrf_table_id_start, |
169 | self.vrf_table_id_end)) | |
8465de90 RP |
170 | for t, v in self.iproute2_vrf_map.iteritems(): |
171 | f.write('%s %s\n' %(t, v)) | |
05ac52f0 RP |
172 | f.flush() |
173 | ||
174 | def _iproute2_vrf_map_open(self, sync_vrfs=False, append=False): | |
175 | self.logger.info('vrf: syncing table map to %s' | |
176 | %self.iproute2_vrf_filename) | |
177 | fmode = 'a+' if append else 'w' | |
178 | try: | |
179 | self.iproute2_vrf_map_fd = open(self.iproute2_vrf_filename, | |
180 | '%s' %fmode) | |
181 | except Exception, e: | |
182 | self.log_warn('vrf: error opening %s (%s)' | |
183 | %(self.iproute2_vrf_filename, str(e))) | |
184 | return | |
185 | ||
186 | if not append: | |
187 | # write file header | |
188 | self.iproute2_vrf_map_fd.write(self.iproute2_vrf_filehdr | |
189 | %(self.vrf_table_id_start, | |
190 | self.vrf_table_id_end)) | |
191 | for t, v in self.iproute2_vrf_map.iteritems(): | |
192 | self.iproute2_vrf_map_fd.write('%s %s\n' %(t, v)) | |
193 | self.iproute2_vrf_map_fd.flush() | |
8465de90 RP |
194 | |
195 | def _is_vrf(self, ifaceobj): | |
196 | if ifaceobj.get_attr_value_first('vrf-table'): | |
197 | return True | |
198 | return False | |
199 | ||
768b4ec5 | 200 | def get_upper_ifacenames(self, ifaceobj, ifacenames_all=None): |
8465de90 RP |
201 | """ Returns list of interfaces dependent on ifaceobj """ |
202 | ||
768b4ec5 RP |
203 | vrf_table = ifaceobj.get_attr_value_first('vrf-table') |
204 | if vrf_table: | |
205 | ifaceobj.link_type = ifaceLinkType.LINK_MASTER | |
206 | ifaceobj.link_kind |= ifaceLinkKind.VRF | |
f7551dcb | 207 | ifaceobj.role |= ifaceRole.MASTER |
8465de90 RP |
208 | vrf_iface_name = ifaceobj.get_attr_value_first('vrf') |
209 | if not vrf_iface_name: | |
210 | return None | |
768b4ec5 | 211 | ifaceobj.link_type = ifaceLinkType.LINK_SLAVE |
858a230f | 212 | ifaceobj.link_privflags |= ifaceLinkPrivFlags.VRF_SLAVE |
8ad5c767 | 213 | |
8465de90 RP |
214 | return [vrf_iface_name] |
215 | ||
768b4ec5 | 216 | def get_upper_ifacenames_running(self, ifaceobj): |
8465de90 RP |
217 | return None |
218 | ||
219 | def _get_iproute2_vrf_table(self, vrf_dev_name): | |
220 | for t, v in self.iproute2_vrf_map.iteritems(): | |
221 | if v == vrf_dev_name: | |
09753350 | 222 | return str(t) |
8465de90 RP |
223 | return None |
224 | ||
225 | def _get_avail_vrf_table_id(self): | |
6f2890fc RP |
226 | if self.last_used_vrf_table == None: |
227 | table_id_start = self.vrf_table_id_start | |
228 | else: | |
229 | table_id_start = self.last_used_vrf_table + 1 | |
230 | for t in range(table_id_start, | |
231 | self.vrf_table_id_end): | |
8465de90 RP |
232 | if not self.iproute2_vrf_map.get(t): |
233 | self.last_used_vrf_table = t | |
6f2890fc | 234 | return str(t) |
8465de90 RP |
235 | return None |
236 | ||
25e2386e RP |
237 | def _iproute2_is_vrf_tableid_inuse(self, vrf_dev_name, table_id): |
238 | old_vrf_name = self.iproute2_vrf_map.get(int(table_id)) | |
239 | if old_vrf_name and old_vrf_name != vrf_dev_name: | |
240 | self.log_error('table id %s already assigned to vrf dev %s' | |
241 | %(table_id, old_vrf_name)) | |
242 | ||
8465de90 | 243 | def _iproute2_vrf_table_entry_add(self, vrf_dev_name, table_id): |
05ac52f0 | 244 | old_vrf_name = self.iproute2_vrf_map.get(int(table_id)) |
25e2386e | 245 | if not old_vrf_name: |
05ac52f0 RP |
246 | self.iproute2_vrf_map[int(table_id)] = vrf_dev_name |
247 | if self.iproute2_vrf_map_fd: | |
248 | self.iproute2_vrf_map_fd.write('%s %s\n' | |
249 | %(table_id, vrf_dev_name)) | |
250 | self.iproute2_vrf_map_fd.flush() | |
25e2386e RP |
251 | return |
252 | ||
253 | if old_vrf_name != vrf_dev_name: | |
254 | self.log_error('table id %d already assigned to vrf dev %s' | |
255 | %(table_id, old_vrf_name)) | |
8465de90 RP |
256 | |
257 | def _iproute2_vrf_table_entry_del(self, table_id): | |
258 | try: | |
05ac52f0 RP |
259 | # with any del of vrf map, we need to force sync to disk |
260 | self.iproute2_vrf_map_sync_to_disk = True | |
09753350 | 261 | del self.iproute2_vrf_map[int(table_id)] |
8465de90 RP |
262 | except Exception, e: |
263 | self.logger.info('vrf: iproute2 vrf map del failed for %d (%s)' | |
264 | %(table_id, str(e))) | |
265 | pass | |
266 | ||
aa36221f RP |
267 | def _is_vrf_dev(self, ifacename): |
268 | # Look at iproute2 map for now. | |
269 | # If it was a master we knew about, | |
270 | # it is definately there | |
271 | if ifacename in self.iproute2_vrf_map.values(): | |
272 | return True | |
273 | return False | |
274 | ||
122ef35b RP |
275 | def _is_dhcp_slave(self, ifaceobj): |
276 | if (not ifaceobj.addr_method or | |
277 | (ifaceobj.addr_method != 'dhcp' and | |
278 | ifaceobj.addr_method != 'dhcp6')): | |
279 | return False | |
280 | return True | |
281 | ||
0ba04b38 RP |
282 | def _up_vrf_slave_without_master(self, ifacename, vrfname, ifaceobj, |
283 | ifaceobj_getfunc): | |
8ad5c767 RP |
284 | """ If we have a vrf slave that has dhcp configured, bring up the |
285 | vrf master now. This is needed because vrf has special handling | |
286 | in dhclient hook which requires the vrf master to be present """ | |
0ba04b38 | 287 | |
8ad5c767 RP |
288 | vrf_master = ifaceobj.upperifaces[0] |
289 | if not vrf_master: | |
290 | self.logger.warn('%s: vrf master not found' %ifacename) | |
291 | return | |
292 | if os.path.exists('/sys/class/net/%s' %vrf_master): | |
293 | self.logger.info('%s: vrf master %s exists returning' | |
294 | %(ifacename, vrf_master)) | |
295 | return | |
296 | vrf_master_objs = ifaceobj_getfunc(vrf_master) | |
297 | if not vrf_master_objs: | |
298 | self.logger.warn('%s: vrf master ifaceobj not found' %ifacename) | |
299 | return | |
300 | self.logger.info('%s: bringing up vrf master %s' | |
301 | %(ifacename, vrf_master)) | |
302 | for mobj in vrf_master_objs: | |
303 | vrf_table = mobj.get_attr_value_first('vrf-table') | |
304 | if vrf_table: | |
df53966d RP |
305 | if vrf_table == 'auto': |
306 | vrf_table = self._get_avail_vrf_table_id() | |
307 | if not vrf_table: | |
308 | self.log_error('%s: unable to get an auto table id' | |
309 | %mobj.name) | |
310 | self.logger.info('%s: table id auto: selected table id %s\n' | |
311 | %(mobj.name, vrf_table)) | |
25e2386e RP |
312 | try: |
313 | self._up_vrf_dev(mobj, vrf_table, False) | |
314 | except Exception: | |
315 | raise | |
df53966d | 316 | break |
0ba04b38 | 317 | self._handle_existing_connections(ifaceobj, vrfname) |
8ad5c767 RP |
318 | self.ipcmd.link_set(ifacename, 'master', vrfname) |
319 | return | |
320 | ||
717cee31 | 321 | def _down_dhcp_slave(self, ifaceobj, vrfname): |
122ef35b | 322 | try: |
717cee31 | 323 | dhclient_cmd_prefix = None |
6369e774 RP |
324 | if (vrfname and self.vrf_exec_cmd_prefix and |
325 | self.ipcmd.link_exists(vrfname)): | |
717cee31 RP |
326 | dhclient_cmd_prefix = '%s %s' %(self.vrf_exec_cmd_prefix, |
327 | vrfname) | |
328 | self.dhclientcmd.release(ifaceobj.name, dhclient_cmd_prefix) | |
122ef35b RP |
329 | except: |
330 | # ignore any dhclient release errors | |
331 | pass | |
332 | ||
0ba04b38 | 333 | def _handle_existing_connections(self, ifaceobj, vrfname): |
fc5e1735 | 334 | if not ifaceobj or ifupdownflags.flags.PERFMODE: |
0ba04b38 RP |
335 | return |
336 | if (self.vrf_mgmt_devname and | |
337 | self.vrf_mgmt_devname == vrfname): | |
338 | self._kill_ssh_connections(ifaceobj.name) | |
339 | if self._is_dhcp_slave(ifaceobj): | |
717cee31 | 340 | self._down_dhcp_slave(ifaceobj, vrfname) |
0ba04b38 | 341 | |
8ad5c767 | 342 | def _up_vrf_slave(self, ifacename, vrfname, ifaceobj=None, |
09753350 | 343 | ifaceobj_getfunc=None, vrf_exists=False): |
8465de90 | 344 | try: |
09753350 RP |
345 | if vrf_exists or self.ipcmd.link_exists(vrfname): |
346 | upper = self.ipcmd.link_get_upper(ifacename) | |
4d2c9798 | 347 | if not upper or upper != vrfname: |
0ba04b38 | 348 | self._handle_existing_connections(ifaceobj, vrfname) |
122ef35b | 349 | self.ipcmd.link_set(ifacename, 'master', vrfname) |
8ad5c767 | 350 | elif ifaceobj: |
0ba04b38 RP |
351 | self._up_vrf_slave_without_master(ifacename, vrfname, ifaceobj, |
352 | ifaceobj_getfunc) | |
353 | rtnetlink_api.rtnl_api.link_set(ifacename, "up") | |
8465de90 | 354 | except Exception, e: |
d54baa22 | 355 | self.log_error('%s: %s' %(ifacename, str(e))) |
8465de90 RP |
356 | |
357 | def _del_vrf_rules(self, vrf_dev_name, vrf_table): | |
358 | pref = 200 | |
359 | ip_rule_out_format = '%s: from all %s %s lookup %s' | |
360 | ip_rule_cmd = 'ip %s rule del pref %s %s %s table %s' | |
361 | ||
4ce47ce4 | 362 | rule = ip_rule_out_format %(pref, 'oif', vrf_dev_name, vrf_dev_name) |
8465de90 | 363 | if rule in self.ip_rule_cache: |
25e2386e RP |
364 | rule_cmd = ip_rule_cmd %('', pref, 'oif', vrf_dev_name, |
365 | vrf_dev_name) | |
8465de90 RP |
366 | self.exec_command(rule_cmd) |
367 | ||
4ce47ce4 | 368 | rule = ip_rule_out_format %(pref, 'iif', vrf_dev_name, vrf_dev_name) |
8465de90 | 369 | if rule in self.ip_rule_cache: |
25e2386e RP |
370 | rule_cmd = ip_rule_cmd %('', pref, 'iif', vrf_dev_name, |
371 | vrf_dev_name) | |
8465de90 RP |
372 | self.exec_command(rule_cmd) |
373 | ||
4ce47ce4 | 374 | rule = ip_rule_out_format %(pref, 'oif', vrf_dev_name, vrf_dev_name) |
e6072769 | 375 | if rule in self.ip6_rule_cache: |
8465de90 | 376 | rule_cmd = ip_rule_cmd %('-6', pref, 'oif', vrf_dev_name, |
25e2386e | 377 | vrf_dev_name) |
8465de90 RP |
378 | self.exec_command(rule_cmd) |
379 | ||
4ce47ce4 | 380 | rule = ip_rule_out_format %(pref, 'iif', vrf_dev_name, vrf_dev_name) |
e6072769 | 381 | if rule in self.ip6_rule_cache: |
8465de90 | 382 | rule_cmd = ip_rule_cmd %('-6', pref, 'iif', vrf_dev_name, |
25e2386e | 383 | vrf_dev_name) |
8465de90 RP |
384 | self.exec_command(rule_cmd) |
385 | ||
386 | def _add_vrf_rules(self, vrf_dev_name, vrf_table): | |
387 | pref = 200 | |
388 | ip_rule_out_format = '%s: from all %s %s lookup %s' | |
389 | ip_rule_cmd = 'ip %s rule add pref %s %s %s table %s' | |
659097a0 N |
390 | if self.vrf_fix_local_table: |
391 | self.vrf_fix_local_table = False | |
392 | rule = '0: from all lookup local' | |
393 | if rule in self.ip_rule_cache: | |
394 | try: | |
3fcb15fe N |
395 | self.exec_command('ip rule del pref 0') |
396 | self.exec_command('ip rule add pref 32765 table local') | |
659097a0 N |
397 | except Exception, e: |
398 | self.logger.info('%s' %str(e)) | |
399 | pass | |
c61672da N |
400 | if rule in self.ip6_rule_cache: |
401 | try: | |
402 | self.exec_command('ip -6 rule del pref 0') | |
403 | self.exec_command('ip -6 rule add pref 32765 table local') | |
404 | except Exception, e: | |
405 | self.logger.info('%s' %str(e)) | |
406 | pass | |
8465de90 | 407 | |
3fcb15fe N |
408 | #Example ip rule |
409 | #200: from all oif blue lookup blue | |
410 | #200: from all iif blue lookup blue | |
411 | ||
412 | rule = ip_rule_out_format %(pref, 'oif', vrf_dev_name, vrf_dev_name) | |
8465de90 | 413 | if rule not in self.ip_rule_cache: |
25e2386e RP |
414 | rule_cmd = ip_rule_cmd %('', pref, 'oif', vrf_dev_name, |
415 | vrf_dev_name) | |
8465de90 RP |
416 | self.exec_command(rule_cmd) |
417 | ||
3fcb15fe | 418 | rule = ip_rule_out_format %(pref, 'iif', vrf_dev_name, vrf_dev_name) |
8465de90 | 419 | if rule not in self.ip_rule_cache: |
25e2386e RP |
420 | rule_cmd = ip_rule_cmd %('', pref, 'iif', vrf_dev_name, |
421 | vrf_dev_name) | |
8465de90 RP |
422 | self.exec_command(rule_cmd) |
423 | ||
3fcb15fe | 424 | rule = ip_rule_out_format %(pref, 'oif', vrf_dev_name, vrf_dev_name) |
e6072769 | 425 | if rule not in self.ip6_rule_cache: |
25e2386e RP |
426 | rule_cmd = ip_rule_cmd %('-6', pref, 'oif', vrf_dev_name, |
427 | vrf_dev_name) | |
8465de90 RP |
428 | self.exec_command(rule_cmd) |
429 | ||
3fcb15fe | 430 | rule = ip_rule_out_format %(pref, 'iif', vrf_dev_name, vrf_dev_name) |
e6072769 | 431 | if rule not in self.ip6_rule_cache: |
8465de90 | 432 | rule_cmd = ip_rule_cmd %('-6', pref, 'iif', vrf_dev_name, |
25e2386e | 433 | vrf_dev_name) |
8465de90 RP |
434 | self.exec_command(rule_cmd) |
435 | ||
4d2c9798 | 436 | def _add_vrf_slaves(self, ifaceobj, ifaceobj_getfunc=None): |
768b4ec5 RP |
437 | running_slaves = self.ipcmd.link_get_lowers(ifaceobj.name) |
438 | config_slaves = ifaceobj.lowerifaces | |
b94e4d24 | 439 | if not config_slaves and not running_slaves: |
867e11a2 | 440 | return |
4d2c9798 RP |
441 | |
442 | if not config_slaves: config_slaves = [] | |
443 | if not running_slaves: running_slaves = [] | |
768b4ec5 RP |
444 | add_slaves = set(config_slaves).difference(set(running_slaves)) |
445 | del_slaves = set(running_slaves).difference(set(config_slaves)) | |
446 | if add_slaves: | |
447 | for s in add_slaves: | |
448 | try: | |
09753350 RP |
449 | sobj = None |
450 | if ifaceobj_getfunc: | |
451 | sobj = ifaceobj_getfunc(s) | |
452 | self._up_vrf_slave(s, ifaceobj.name, | |
453 | sobj[0] if sobj else None, | |
454 | ifaceobj_getfunc, True) | |
768b4ec5 RP |
455 | except Exception, e: |
456 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) | |
457 | ||
458 | if del_slaves: | |
459 | for s in del_slaves: | |
460 | try: | |
aa36221f | 461 | sobj = None |
4d2c9798 RP |
462 | if ifaceobj_getfunc: |
463 | sobj = ifaceobj_getfunc(s) | |
0ba04b38 RP |
464 | self._down_vrf_slave(s, sobj[0] if sobj else None, |
465 | ifaceobj.name) | |
768b4ec5 RP |
466 | except Exception, e: |
467 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) | |
468 | ||
469 | if ifaceobj.link_type == ifaceLinkType.LINK_MASTER: | |
470 | for s in config_slaves: | |
471 | try: | |
472 | rtnetlink_api.rtnl_api.link_set(s, "up") | |
473 | except Exception, e: | |
474 | self.logger.debug('%s: %s: link set up (%s)' | |
475 | %(ifaceobj.name, s, str(e))) | |
476 | pass | |
8465de90 | 477 | |
8ad5c767 RP |
478 | def _set_vrf_dev_processed_flag(self, ifaceobj): |
479 | ifaceobj.module_flags[self.name] = \ | |
480 | ifaceobj.module_flags.setdefault(self.name, 0) | \ | |
481 | vrfPrivFlags.PROCESSED | |
482 | ||
483 | def _check_vrf_dev_processed_flag(self, ifaceobj): | |
25e2386e | 484 | if (ifaceobj.module_flags.get(self.name, 0) & vrfPrivFlags.PROCESSED): |
8ad5c767 RP |
485 | return True |
486 | return False | |
8465de90 | 487 | |
8ad5c767 | 488 | def _create_vrf_dev(self, ifaceobj, vrf_table): |
2df6a60f | 489 | if not self.ipcmd.link_exists(ifaceobj.name): |
6f2890fc RP |
490 | if vrf_table == 'auto': |
491 | vrf_table = self._get_avail_vrf_table_id() | |
492 | if not vrf_table: | |
493 | self.log_error('%s: unable to get an auto table id' | |
494 | %ifaceobj.name) | |
495 | self.logger.info('%s: table id auto: selected table id %s\n' | |
496 | %(ifaceobj.name, vrf_table)) | |
25e2386e RP |
497 | else: |
498 | self._iproute2_is_vrf_tableid_inuse(ifaceobj.name, vrf_table) | |
d54baa22 RP |
499 | |
500 | if not vrf_table.isdigit(): | |
501 | self.log_error('%s: vrf-table must be an integer or \'auto\'' | |
502 | %(ifaceobj.name), ifaceobj) | |
503 | ||
6f2890fc RP |
504 | # XXX: If we decide to not allow vrf id usages out of |
505 | # the reserved ifupdown range, then uncomment this code. | |
fd8c6caf RP |
506 | else: |
507 | if (int(vrf_table) < self.vrf_table_id_start or | |
508 | int(vrf_table) > self.vrf_table_id_end): | |
509 | self.log_error('%s: vrf table id %s out of reserved range [%d,%d]' | |
510 | %(ifaceobj.name, vrf_table, | |
511 | self.vrf_table_id_start, | |
512 | self.vrf_table_id_end)) | |
2df6a60f | 513 | try: |
8465de90 RP |
514 | self.ipcmd.link_create(ifaceobj.name, 'vrf', |
515 | {'table' : '%s' %vrf_table}) | |
2df6a60f RP |
516 | except Exception, e: |
517 | self.log_error('%s: create failed (%s)\n' | |
518 | %(ifaceobj.name, str(e))) | |
25e2386e RP |
519 | if vrf_table != 'auto': |
520 | self._iproute2_vrf_table_entry_add(ifaceobj.name, vrf_table) | |
2df6a60f | 521 | else: |
4d2c9798 RP |
522 | if vrf_table == 'auto': |
523 | vrf_table = self._get_iproute2_vrf_table(ifaceobj.name) | |
524 | if not vrf_table: | |
525 | self.log_error('%s: unable to get vrf table id' | |
526 | %ifaceobj.name) | |
6f2890fc | 527 | |
2df6a60f RP |
528 | # if the device exists, check if table id is same |
529 | vrfdev_attrs = self.ipcmd.link_get_linkinfo_attrs(ifaceobj.name) | |
530 | if vrfdev_attrs: | |
531 | running_table = vrfdev_attrs.get('table', None) | |
532 | if vrf_table != running_table: | |
6f2890fc RP |
533 | self.log_error('%s: cannot change vrf table id,running table id %s is different from config id %s' %(ifaceobj.name, |
534 | running_table, vrf_table)) | |
4d2c9798 RP |
535 | return vrf_table |
536 | ||
25e2386e RP |
537 | def _up_vrf_helper(self, ifaceobj, vrf_table): |
538 | if self.vrf_helper: | |
539 | self.exec_command('%s create %s %s' %(self.vrf_helper, | |
540 | ifaceobj.name, vrf_table)) | |
541 | ||
4d2c9798 RP |
542 | def _up_vrf_dev(self, ifaceobj, vrf_table, add_slaves=True, |
543 | ifaceobj_getfunc=None): | |
8ad5c767 RP |
544 | |
545 | # if vrf dev is already processed return. This can happen | |
0ba04b38 RP |
546 | # if we the slave was configured before. |
547 | # see self._up_vrf_slave_without_master | |
8ad5c767 RP |
548 | if self._check_vrf_dev_processed_flag(ifaceobj): |
549 | return True | |
550 | ||
25e2386e RP |
551 | try: |
552 | vrf_table = self._create_vrf_dev(ifaceobj, vrf_table) | |
553 | except Exception, e: | |
554 | self.log_error('%s: %s' %(ifaceobj.name, str(e))) | |
555 | ||
8ad5c767 | 556 | try: |
8ad5c767 | 557 | self._add_vrf_rules(ifaceobj.name, vrf_table) |
6369e774 | 558 | self._up_vrf_helper(ifaceobj, vrf_table) |
8ad5c767 | 559 | if add_slaves: |
4d2c9798 | 560 | self._add_vrf_slaves(ifaceobj, ifaceobj_getfunc) |
8ad5c767 | 561 | self._set_vrf_dev_processed_flag(ifaceobj) |
0ba04b38 | 562 | rtnetlink_api.rtnl_api.link_set(ifaceobj.name, "up") |
8ad5c767 RP |
563 | except Exception, e: |
564 | self.log_error('%s: %s' %(ifaceobj.name, str(e))) | |
565 | ||
0ba04b38 | 566 | def _kill_ssh_connections(self, ifacename): |
5c5a7b93 | 567 | try: |
0ba04b38 RP |
568 | runningaddrsdict = self.ipcmd.addr_get(ifacename) |
569 | if not runningaddrsdict: | |
5c5a7b93 | 570 | return |
0ba04b38 RP |
571 | iplist = [i.split('/', 1)[0] for i in runningaddrsdict.keys()] |
572 | if not iplist: | |
573 | return | |
574 | proc=[] | |
5c5a7b93 N |
575 | #Example output: |
576 | #ESTAB 0 0 10.0.1.84:ssh 10.0.1.228:45186 | |
577 | #users:(("sshd",pid=2528,fd=3)) | |
0ba04b38 | 578 | cmdl = ['/bin/ss', '-t', '-p'] |
5c5a7b93 N |
579 | for line in subprocess.check_output(cmdl, stderr=subprocess.STDOUT, |
580 | shell=False).splitlines(): | |
581 | citems = line.split() | |
582 | addr = None | |
583 | if '%' in citems[3]: | |
584 | addr = citems[3].split('%')[0] | |
585 | elif ':ssh' in citems[3]: | |
586 | addr = citems[3].split(':')[0] | |
587 | if not addr: | |
588 | continue | |
0ba04b38 | 589 | if addr in iplist: |
5c5a7b93 N |
590 | if len(citems) == 6: |
591 | proc.append(citems[5].split(',')[1].split('=')[1]) | |
592 | ||
593 | if not proc: | |
594 | return | |
0ba04b38 | 595 | pid = subprocess.check_output(['/bin/ps', '--no-headers', |
5c5a7b93 N |
596 | '-fp', str(os.getppid())], |
597 | stderr=subprocess.STDOUT, | |
598 | shell=False).split()[2] | |
aa36221f RP |
599 | self.logger.info("%s: killing active ssh sessions: %s" |
600 | %(ifacename, str(proc))) | |
5c5a7b93 N |
601 | for id in proc: |
602 | if id != pid: | |
603 | try: | |
aa36221f | 604 | os.kill(int(id), signal.SIGINT) |
5c5a7b93 N |
605 | except OSError as e: |
606 | continue | |
0ba04b38 RP |
607 | |
608 | # Kill current SSH client | |
5c5a7b93 | 609 | if pid in proc: |
32f6e6ca | 610 | try: |
0ba04b38 RP |
611 | forkret = os.fork() |
612 | except OSError, e: | |
613 | self.logger.info("fork error : %s [%d]" % (e.strerror, e.errno)) | |
614 | if (forkret == 0): # The first child. | |
615 | try: | |
616 | os.setsid() | |
617 | self.logger.info("%s: ifreload continuing in the background" %ifacename) | |
618 | except OSError, (err_no, err_message): | |
619 | self.logger.info("os.setsid failed: errno=%d: %s" % (err_no, err_message)) | |
620 | self.logger.info("pid=%d pgid=%d" % (os.getpid(), os.getpgid(0))) | |
5c5a7b93 | 621 | try: |
aa36221f RP |
622 | self.logger.info("%s: killing our session: %s" |
623 | %(ifacename, str(proc))) | |
624 | os.kill(int(pid), signal.SIGINT) | |
5c5a7b93 N |
625 | return |
626 | except OSError as e: | |
627 | return | |
628 | except Exception, e: | |
629 | self.logger.info('%s: %s' %(ifacename, str(e))) | |
630 | ||
8ad5c767 | 631 | def _up(self, ifaceobj, ifaceobj_getfunc=None): |
8465de90 RP |
632 | try: |
633 | vrf_table = ifaceobj.get_attr_value_first('vrf-table') | |
634 | if vrf_table: | |
05ac52f0 | 635 | self._iproute2_vrf_map_initialize() |
09753350 | 636 | # This is a vrf device |
6f2890fc RP |
637 | if self.vrf_count == self.vrf_max_count: |
638 | self.log_error('%s: max vrf count %d hit...not ' | |
639 | 'creating vrf' %(ifaceobj.name, | |
640 | self.vrf_count)) | |
4d2c9798 | 641 | self._up_vrf_dev(ifaceobj, vrf_table, True, ifaceobj_getfunc) |
8465de90 RP |
642 | else: |
643 | vrf = ifaceobj.get_attr_value_first('vrf') | |
644 | if vrf: | |
05ac52f0 | 645 | self._iproute2_vrf_map_initialize() |
09753350 | 646 | # This is a vrf slave |
8ad5c767 RP |
647 | self._up_vrf_slave(ifaceobj.name, vrf, ifaceobj, |
648 | ifaceobj_getfunc) | |
aa36221f RP |
649 | else: |
650 | # check if we were a slave before | |
651 | master = self.ipcmd.link_get_master(ifaceobj.name) | |
652 | if master: | |
717cee31 | 653 | self._iproute2_vrf_map_initialize() |
aa36221f | 654 | if self._is_vrf_dev(master): |
0ba04b38 RP |
655 | self._down_vrf_slave(ifaceobj.name, ifaceobj, |
656 | master) | |
8465de90 RP |
657 | except Exception, e: |
658 | self.log_error(str(e)) | |
659 | ||
25e2386e RP |
660 | def _down_vrf_helper(self, ifaceobj, vrf_table): |
661 | if self.vrf_helper: | |
662 | self.exec_command('%s delete %s %s' %(self.vrf_helper, | |
663 | ifaceobj.name, vrf_table)) | |
664 | ||
c4be5481 | 665 | def _down_vrf_dev(self, ifaceobj, vrf_table, ifaceobj_getfunc=None): |
5c5a7b93 | 666 | |
8465de90 RP |
667 | if vrf_table == 'auto': |
668 | vrf_table = self._get_iproute2_vrf_table(ifaceobj.name) | |
aa36221f | 669 | |
8465de90 | 670 | try: |
c4be5481 RP |
671 | running_slaves = self.ipcmd.link_get_lowers(ifaceobj.name) |
672 | if running_slaves: | |
673 | for s in running_slaves: | |
674 | if ifaceobj_getfunc: | |
675 | sobj = ifaceobj_getfunc(s) | |
0ba04b38 RP |
676 | self._handle_existing_connections(sobj[0] if sobj else None, |
677 | ifaceobj.name) | |
768b4ec5 RP |
678 | except Exception, e: |
679 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) | |
680 | pass | |
681 | ||
6369e774 | 682 | self._down_vrf_helper(ifaceobj, vrf_table) |
25e2386e | 683 | |
768b4ec5 | 684 | try: |
f1c92482 | 685 | self._del_vrf_rules(ifaceobj.name, vrf_table) |
768b4ec5 RP |
686 | except Exception, e: |
687 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) | |
688 | pass | |
689 | ||
690 | try: | |
f1c92482 RP |
691 | self.ipcmd.link_delete(ifaceobj.name) |
692 | except Exception, e: | |
693 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) | |
694 | pass | |
695 | ||
696 | try: | |
697 | self._iproute2_vrf_table_entry_del(vrf_table) | |
8465de90 | 698 | except Exception, e: |
768b4ec5 RP |
699 | self.logger.info('%s: %s' %(ifaceobj.name, str(e))) |
700 | pass | |
8465de90 | 701 | |
f1c92482 | 702 | |
0ba04b38 | 703 | def _down_vrf_slave(self, ifacename, ifaceobj=None, vrfname=None): |
8465de90 | 704 | try: |
0ba04b38 | 705 | self._handle_existing_connections(ifaceobj, vrfname) |
768b4ec5 | 706 | self.ipcmd.link_set(ifacename, 'nomaster') |
f825610e | 707 | rtnetlink_api.rtnl_api.link_set(ifacename, "down") |
8465de90 | 708 | except Exception, e: |
768b4ec5 | 709 | self.logger.warn('%s: %s' %(ifacename, str(e))) |
8465de90 | 710 | |
8ad5c767 | 711 | def _down(self, ifaceobj, ifaceobj_getfunc=None): |
8465de90 RP |
712 | try: |
713 | vrf_table = ifaceobj.get_attr_value_first('vrf-table') | |
714 | if vrf_table: | |
05ac52f0 | 715 | self._iproute2_vrf_map_initialize() |
c4be5481 | 716 | self._down_vrf_dev(ifaceobj, vrf_table, ifaceobj_getfunc) |
8465de90 RP |
717 | else: |
718 | vrf = ifaceobj.get_attr_value_first('vrf') | |
719 | if vrf: | |
05ac52f0 | 720 | self._iproute2_vrf_map_initialize() |
0ba04b38 | 721 | self._down_vrf_slave(ifaceobj.name, ifaceobj, None) |
8465de90 RP |
722 | except Exception, e: |
723 | self.log_warn(str(e)) | |
724 | ||
725 | def _query_check_vrf_slave(self, ifaceobj, ifaceobjcurr, vrf): | |
726 | try: | |
54616d3f | 727 | master = self.ipcmd.link_get_master(ifaceobj.name) |
8465de90 | 728 | if not master or master != vrf: |
586535e8 | 729 | ifaceobjcurr.update_config_with_status('vrf', str(master), 1) |
8465de90 RP |
730 | else: |
731 | ifaceobjcurr.update_config_with_status('vrf', master, 0) | |
732 | except Exception, e: | |
733 | self.log_warn(str(e)) | |
734 | ||
6e16e5ae | 735 | def _query_check_vrf_dev(self, ifaceobj, ifaceobjcurr, vrf_table): |
8465de90 RP |
736 | try: |
737 | if not self.ipcmd.link_exists(ifaceobj.name): | |
738 | self.logger.info('%s: vrf: does not exist' %(ifaceobj.name)) | |
739 | return | |
740 | if vrf_table == 'auto': | |
741 | config_table = self._get_iproute2_vrf_table(ifaceobj.name) | |
742 | else: | |
743 | config_table = vrf_table | |
744 | vrfdev_attrs = self.ipcmd.link_get_linkinfo_attrs(ifaceobj.name) | |
745 | if not vrfdev_attrs: | |
746 | ifaceobjcurr.update_config_with_status('vrf-table', 'None', 1) | |
747 | return | |
748 | running_table = vrfdev_attrs.get('table') | |
749 | if not running_table: | |
750 | ifaceobjcurr.update_config_with_status('vrf-table', 'None', 1) | |
751 | return | |
752 | if config_table != running_table: | |
753 | ifaceobjcurr.update_config_with_status('vrf-table', | |
754 | running_table, 1) | |
755 | else: | |
756 | ifaceobjcurr.update_config_with_status('vrf-table', | |
757 | running_table, 0) | |
6e16e5ae | 758 | if not ifupdownflags.flags.WITHDEFAULTS: |
669b422a RP |
759 | return |
760 | if self.vrf_helper: | |
6e16e5ae N |
761 | try: |
762 | self.exec_command('%s verify %s %s' | |
763 | %(self.vrf_helper, | |
764 | ifaceobj.name, config_table)) | |
765 | ifaceobjcurr.update_config_with_status('vrf-helper', | |
766 | '%s create %s %s' | |
767 | %(self.vrf_helper, | |
768 | ifaceobj.name, | |
769 | config_table), 0) | |
770 | except Exception, e: | |
771 | ifaceobjcurr.update_config_with_status('vrf-helper', | |
772 | '%s create %s %s' | |
773 | %(self.vrf_helper, | |
774 | ifaceobj.name, | |
775 | config_table), 1) | |
776 | pass | |
8465de90 RP |
777 | except Exception, e: |
778 | self.log_warn(str(e)) | |
779 | ||
6e16e5ae | 780 | def _query_check(self, ifaceobj, ifaceobjcurr): |
8465de90 RP |
781 | try: |
782 | vrf_table = ifaceobj.get_attr_value_first('vrf-table') | |
783 | if vrf_table: | |
05ac52f0 | 784 | self._iproute2_vrf_map_initialize() |
6e16e5ae | 785 | self._query_check_vrf_dev(ifaceobj, ifaceobjcurr, vrf_table) |
8465de90 RP |
786 | else: |
787 | vrf = ifaceobj.get_attr_value_first('vrf') | |
788 | if vrf: | |
05ac52f0 | 789 | self._iproute2_vrf_map_initialize() |
8465de90 RP |
790 | self._query_check_vrf_slave(ifaceobj, ifaceobjcurr, vrf) |
791 | except Exception, e: | |
792 | self.log_warn(str(e)) | |
793 | ||
8ad5c767 | 794 | def _query_running(self, ifaceobjrunning, ifaceobj_getfunc=None): |
8465de90 RP |
795 | try: |
796 | kind = self.ipcmd.link_get_kind(ifaceobjrunning.name) | |
797 | if kind == 'vrf': | |
54616d3f | 798 | vrfdev_attrs = self.ipcmd.link_get_linkinfo_attrs(ifaceobjrunning.name) |
8465de90 RP |
799 | if vrfdev_attrs: |
800 | running_table = vrfdev_attrs.get('table') | |
801 | if running_table: | |
802 | ifaceobjrunning.update_config('vrf-table', | |
803 | running_table) | |
804 | elif kind == 'vrf_slave': | |
54616d3f | 805 | vrf = self.ipcmd.link_get_master(ifaceobjrunning.name) |
8465de90 RP |
806 | if vrf: |
807 | ifaceobjrunning.update_config('vrf', vrf) | |
808 | except Exception, e: | |
809 | self.log_warn(str(e)) | |
810 | ||
811 | _run_ops = {'pre-up' : _up, | |
812 | 'post-down' : _down, | |
813 | 'query-running' : _query_running, | |
814 | 'query-checkcurr' : _query_check} | |
815 | ||
816 | def get_ops(self): | |
817 | """ returns list of ops supported by this module """ | |
818 | return self._run_ops.keys() | |
819 | ||
820 | def _init_command_handlers(self): | |
8465de90 | 821 | if not self.ipcmd: |
fc5e1735 | 822 | self.ipcmd = iproute2() |
8465de90 | 823 | if not self.bondcmd: |
fc5e1735 | 824 | self.bondcmd = bondutil() |
122ef35b | 825 | if not self.dhclientcmd: |
fc5e1735 | 826 | self.dhclientcmd = dhclient() |
8465de90 | 827 | |
8ad5c767 RP |
828 | def run(self, ifaceobj, operation, query_ifaceobj=None, |
829 | ifaceobj_getfunc=None, **extra_args): | |
8465de90 RP |
830 | """ run bond configuration on the interface object passed as argument |
831 | ||
832 | Args: | |
833 | **ifaceobj** (object): iface object | |
834 | ||
835 | **operation** (str): any of 'pre-up', 'post-down', 'query-checkcurr', | |
836 | 'query-running' | |
837 | ||
838 | Kwargs: | |
839 | **query_ifaceobj** (object): query check ifaceobject. This is only | |
840 | valid when op is 'query-checkcurr'. It is an object same as | |
841 | ifaceobj, but contains running attribute values and its config | |
842 | status. The modules can use it to return queried running state | |
843 | of interfaces. status is success if the running state is same | |
844 | as user required state in ifaceobj. error otherwise. | |
845 | """ | |
846 | op_handler = self._run_ops.get(operation) | |
847 | if not op_handler: | |
848 | return | |
849 | self._init_command_handlers() | |
850 | if operation == 'query-checkcurr': | |
6e16e5ae | 851 | op_handler(self, ifaceobj, query_ifaceobj) |
8465de90 | 852 | else: |
8ad5c767 | 853 | op_handler(self, ifaceobj, ifaceobj_getfunc=ifaceobj_getfunc) |