1 #!/bin/bash !! 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Check that route PMTU values match expectati 4 # Check that route PMTU values match expectations, and that initial device MTU
5 # values are assigned correctly 5 # values are assigned correctly
6 # 6 #
7 # Tests currently implemented: 7 # Tests currently implemented:
8 # 8 #
9 # - pmtu_ipv4 9 # - pmtu_ipv4
10 # Set up two namespaces, A and B, with t 10 # Set up two namespaces, A and B, with two paths between them over routers
11 # R1 and R2 (also implemented with names 11 # R1 and R2 (also implemented with namespaces), with different MTUs:
12 # 12 #
13 # segment a_r1 segment b_r1 13 # segment a_r1 segment b_r1 a_r1: 2000
14 # .--------------R1--------------. 14 # .--------------R1--------------. b_r1: 1400
15 # A B 15 # A B a_r2: 2000
16 # '--------------R2--------------' 16 # '--------------R2--------------' b_r2: 1500
17 # segment a_r2 segment b_r2 17 # segment a_r2 segment b_r2
18 # 18 #
19 # Check that PMTU exceptions with the co 19 # Check that PMTU exceptions with the correct PMTU are created. Then
20 # decrease and increase the MTU of the l 20 # decrease and increase the MTU of the local link for one of the paths,
21 # A to R1, checking that route exception 21 # A to R1, checking that route exception PMTU changes accordingly over
22 # this path. Also check that locked exce 22 # this path. Also check that locked exceptions are created when an ICMP
23 # message advertising a PMTU smaller tha 23 # message advertising a PMTU smaller than net.ipv4.route.min_pmtu is
24 # received 24 # received
25 # 25 #
26 # - pmtu_ipv6 26 # - pmtu_ipv6
27 # Same as pmtu_ipv4, except for locked P 27 # Same as pmtu_ipv4, except for locked PMTU tests, using IPv6
28 # 28 #
29 # - pmtu_ipv4_dscp_icmp_exception <<
30 # Set up the same network topology as pm <<
31 # routing table in A. A fib-rule is used <<
32 # based on DSCP. Send ICMPv4 packets wit <<
33 # verify that ECN doesn't interfere with <<
34 # <<
35 # - pmtu_ipv4_dscp_udp_exception <<
36 # Same as pmtu_ipv4_dscp_icmp_exception, <<
37 # <<
38 # - pmtu_ipv4_vxlan4_exception 29 # - pmtu_ipv4_vxlan4_exception
39 # Set up the same network topology as pm 30 # Set up the same network topology as pmtu_ipv4, create a VXLAN tunnel
40 # over IPv4 between A and B, routed via 31 # over IPv4 between A and B, routed via R1. On the link between R1 and B,
41 # set a MTU lower than the VXLAN MTU and 32 # set a MTU lower than the VXLAN MTU and the MTU on the link between A and
42 # R1. Send IPv4 packets, exceeding the M 33 # R1. Send IPv4 packets, exceeding the MTU between R1 and B, over VXLAN
43 # from A to B and check that the PMTU ex 34 # from A to B and check that the PMTU exception is created with the right
44 # value on A 35 # value on A
45 # 36 #
46 # - pmtu_ipv6_vxlan4_exception 37 # - pmtu_ipv6_vxlan4_exception
47 # Same as pmtu_ipv4_vxlan4_exception, bu 38 # Same as pmtu_ipv4_vxlan4_exception, but send IPv6 packets from A to B
48 # 39 #
49 # - pmtu_ipv4_vxlan6_exception 40 # - pmtu_ipv4_vxlan6_exception
50 # Same as pmtu_ipv4_vxlan4_exception, bu 41 # Same as pmtu_ipv4_vxlan4_exception, but use IPv6 transport from A to B
51 # 42 #
52 # - pmtu_ipv6_vxlan6_exception 43 # - pmtu_ipv6_vxlan6_exception
53 # Same as pmtu_ipv4_vxlan6_exception, bu 44 # Same as pmtu_ipv4_vxlan6_exception, but send IPv6 packets from A to B
54 # 45 #
55 # - pmtu_ipv4_geneve4_exception 46 # - pmtu_ipv4_geneve4_exception
56 # Same as pmtu_ipv4_vxlan4_exception, bu 47 # Same as pmtu_ipv4_vxlan4_exception, but using a GENEVE tunnel instead of
57 # VXLAN 48 # VXLAN
58 # 49 #
59 # - pmtu_ipv6_geneve4_exception 50 # - pmtu_ipv6_geneve4_exception
60 # Same as pmtu_ipv6_vxlan4_exception, bu 51 # Same as pmtu_ipv6_vxlan4_exception, but using a GENEVE tunnel instead of
61 # VXLAN 52 # VXLAN
62 # 53 #
63 # - pmtu_ipv4_geneve6_exception 54 # - pmtu_ipv4_geneve6_exception
64 # Same as pmtu_ipv4_vxlan6_exception, bu 55 # Same as pmtu_ipv4_vxlan6_exception, but using a GENEVE tunnel instead of
65 # VXLAN 56 # VXLAN
66 # 57 #
67 # - pmtu_ipv6_geneve6_exception 58 # - pmtu_ipv6_geneve6_exception
68 # Same as pmtu_ipv6_vxlan6_exception, bu 59 # Same as pmtu_ipv6_vxlan6_exception, but using a GENEVE tunnel instead of
69 # VXLAN 60 # VXLAN
70 # 61 #
71 # - pmtu_ipv{4,6}_br_vxlan{4,6}_exception 62 # - pmtu_ipv{4,6}_br_vxlan{4,6}_exception
72 # Set up three namespaces, A, B, and C, 63 # Set up three namespaces, A, B, and C, with routing between A and B over
73 # R1. R2 is unused in these tests. A has 64 # R1. R2 is unused in these tests. A has a veth connection to C, and is
74 # connected to B via a VXLAN endpoint, w 65 # connected to B via a VXLAN endpoint, which is directly bridged to C.
75 # MTU on the B-R1 link is lower than oth 66 # MTU on the B-R1 link is lower than other MTUs.
76 # 67 #
77 # Check that both C and A are able to co 68 # Check that both C and A are able to communicate with B over the VXLAN
78 # tunnel, and that PMTU exceptions with 69 # tunnel, and that PMTU exceptions with the correct values are created.
79 # 70 #
80 # segment a_r1 segm 71 # segment a_r1 segment b_r1 b_r1: 4000
81 # .--------------R1----- 72 # .--------------R1--------------. everything
82 # C---veth A 73 # C---veth A B else: 5000
83 # ' bridge 74 # ' bridge |
84 # '---- - - - - - VXLAN - - 75 # '---- - - - - - VXLAN - - - - - - - '
85 # 76 #
86 # - pmtu_ipv{4,6}_br_geneve{4,6}_exception 77 # - pmtu_ipv{4,6}_br_geneve{4,6}_exception
87 # Same as pmtu_ipv{4,6}_br_vxlan{4,6}_ex 78 # Same as pmtu_ipv{4,6}_br_vxlan{4,6}_exception, with a GENEVE tunnel
88 # instead. 79 # instead.
89 # 80 #
90 # - pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception 81 # - pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception
91 # Set up two namespaces, B, and C, with 82 # Set up two namespaces, B, and C, with routing between the init namespace
92 # and B over R1. A and R2 are unused in 83 # and B over R1. A and R2 are unused in these tests. The init namespace
93 # has a veth connection to C, and is con 84 # has a veth connection to C, and is connected to B via a VXLAN endpoint,
94 # which is handled by Open vSwitch and b 85 # which is handled by Open vSwitch and bridged to C. MTU on the B-R1 link
95 # is lower than other MTUs. 86 # is lower than other MTUs.
96 # 87 #
97 # Check that C is able to communicate wi 88 # Check that C is able to communicate with B over the VXLAN tunnel, and
98 # that PMTU exceptions with the correct 89 # that PMTU exceptions with the correct values are created.
99 # 90 #
100 # segment a_r1 segm 91 # segment a_r1 segment b_r1 b_r1: 4000
101 # .--------------R1----- 92 # .--------------R1--------------. everything
102 # C---veth init 93 # C---veth init B else: 5000
103 # '- ovs 94 # '- ovs |
104 # '---- - - - - - VXLAN - - 95 # '---- - - - - - VXLAN - - - - - - - '
105 # 96 #
106 # - pmtu_ipv{4,6}_ovs_geneve{4,6}_exception 97 # - pmtu_ipv{4,6}_ovs_geneve{4,6}_exception
107 # Same as pmtu_ipv{4,6}_ovs_vxlan{4,6}_e 98 # Same as pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception, with a GENEVE tunnel
108 # instead. 99 # instead.
109 # 100 #
110 # - pmtu_ipv{4,6}_fou{4,6}_exception 101 # - pmtu_ipv{4,6}_fou{4,6}_exception
111 # Same as pmtu_ipv4_vxlan4, but using a 102 # Same as pmtu_ipv4_vxlan4, but using a direct IPv4/IPv6 encapsulation
112 # (FoU) over IPv4/IPv6, instead of VXLAN 103 # (FoU) over IPv4/IPv6, instead of VXLAN
113 # 104 #
114 # - pmtu_ipv{4,6}_fou{4,6}_exception 105 # - pmtu_ipv{4,6}_fou{4,6}_exception
115 # Same as pmtu_ipv4_vxlan4, but using a 106 # Same as pmtu_ipv4_vxlan4, but using a generic UDP IPv4/IPv6
116 # encapsulation (GUE) over IPv4/IPv6, in 107 # encapsulation (GUE) over IPv4/IPv6, instead of VXLAN
117 # 108 #
118 # - pmtu_ipv{4,6}_ipv{4,6}_exception 109 # - pmtu_ipv{4,6}_ipv{4,6}_exception
119 # Same as pmtu_ipv4_vxlan4, but using a 110 # Same as pmtu_ipv4_vxlan4, but using a IPv4/IPv6 tunnel over IPv4/IPv6,
120 # instead of VXLAN 111 # instead of VXLAN
121 # 112 #
122 # - pmtu_vti4_exception 113 # - pmtu_vti4_exception
123 # Set up vti tunnel on top of veth, with 114 # Set up vti tunnel on top of veth, with xfrm states and policies, in two
124 # namespaces with matching endpoints. Ch 115 # namespaces with matching endpoints. Check that route exception is not
125 # created if link layer MTU is not excee 116 # created if link layer MTU is not exceeded, then exceed it and check that
126 # exception is created with the expected 117 # exception is created with the expected PMTU. The approach described
127 # below for IPv6 doesn't apply here, bec 118 # below for IPv6 doesn't apply here, because, on IPv4, administrative MTU
128 # changes alone won't affect PMTU 119 # changes alone won't affect PMTU
129 # 120 #
130 # - pmtu_vti4_udp_exception <<
131 # Same as pmtu_vti4_exception, but using <<
132 # <<
133 # - pmtu_vti4_udp_routed_exception <<
134 # Set up vti tunnel on top of veth conne <<
135 # add xfrm states and policies with ESP- <<
136 # route exception is not created if link <<
137 # lower MTU on second part of routed env <<
138 # is created with the expected PMTU. <<
139 # <<
140 # - pmtu_vti6_exception 121 # - pmtu_vti6_exception
141 # Set up vti6 tunnel on top of veth, wit 122 # Set up vti6 tunnel on top of veth, with xfrm states and policies, in two
142 # namespaces with matching endpoints. Ch 123 # namespaces with matching endpoints. Check that route exception is
143 # created by exceeding link layer MTU wi 124 # created by exceeding link layer MTU with ping to other endpoint. Then
144 # decrease and increase MTU of tunnel, c 125 # decrease and increase MTU of tunnel, checking that route exception PMTU
145 # changes accordingly 126 # changes accordingly
146 # 127 #
147 # - pmtu_vti6_udp_exception <<
148 # Same as pmtu_vti6_exception, but using <<
149 # <<
150 # - pmtu_vti6_udp_routed_exception <<
151 # Same as pmtu_vti6_udp_routed_exception <<
152 # endpoints <<
153 # <<
154 # - pmtu_vti4_default_mtu 128 # - pmtu_vti4_default_mtu
155 # Set up vti4 tunnel on top of veth, in 129 # Set up vti4 tunnel on top of veth, in two namespaces with matching
156 # endpoints. Check that MTU assigned to 130 # endpoints. Check that MTU assigned to vti interface is the MTU of the
157 # lower layer (veth) minus additional lo 131 # lower layer (veth) minus additional lower layer headers (zero, for veth)
158 # minus IPv4 header length 132 # minus IPv4 header length
159 # 133 #
160 # - pmtu_vti6_default_mtu 134 # - pmtu_vti6_default_mtu
161 # Same as above, for IPv6 135 # Same as above, for IPv6
162 # 136 #
163 # - pmtu_vti4_link_add_mtu 137 # - pmtu_vti4_link_add_mtu
164 # Set up vti4 interface passing MTU valu 138 # Set up vti4 interface passing MTU value at link creation, check MTU is
165 # configured, and that link is not creat 139 # configured, and that link is not created with invalid MTU values
166 # 140 #
167 # - pmtu_vti6_link_add_mtu 141 # - pmtu_vti6_link_add_mtu
168 # Same as above, for IPv6 142 # Same as above, for IPv6
169 # 143 #
170 # - pmtu_vti6_link_change_mtu 144 # - pmtu_vti6_link_change_mtu
171 # Set up two dummy interfaces with diffe 145 # Set up two dummy interfaces with different MTUs, create a vti6 tunnel
172 # and check that configured MTU is used 146 # and check that configured MTU is used on link creation and changes, and
173 # that MTU is properly calculated instea 147 # that MTU is properly calculated instead when MTU is not configured from
174 # userspace 148 # userspace
175 # 149 #
176 # - cleanup_ipv4_exception 150 # - cleanup_ipv4_exception
177 # Similar to pmtu_ipv4_vxlan4_exception, 151 # Similar to pmtu_ipv4_vxlan4_exception, but explicitly generate PMTU
178 # exceptions on multiple CPUs and check 152 # exceptions on multiple CPUs and check that the veth device tear-down
179 # happens in a timely manner 153 # happens in a timely manner
180 # 154 #
181 # - cleanup_ipv6_exception 155 # - cleanup_ipv6_exception
182 # Same as above, but use IPv6 transport 156 # Same as above, but use IPv6 transport from A to B
183 # 157 #
184 # - list_flush_ipv4_exception 158 # - list_flush_ipv4_exception
185 # Using the same topology as in pmtu_ipv 159 # Using the same topology as in pmtu_ipv4, create exceptions, and check
186 # they are shown when listing exception 160 # they are shown when listing exception caches, gone after flushing them
187 # 161 #
188 # - list_flush_ipv6_exception 162 # - list_flush_ipv6_exception
189 # Using the same topology as in pmtu_ipv 163 # Using the same topology as in pmtu_ipv6, create exceptions, and check
190 # they are shown when listing exception 164 # they are shown when listing exception caches, gone after flushing them
191 # 165 #
192 # - pmtu_ipv4_route_change 166 # - pmtu_ipv4_route_change
193 # Use the same topology as in pmtu_ipv4, 167 # Use the same topology as in pmtu_ipv4, but issue a route replacement
194 # command and delete the corresponding d 168 # command and delete the corresponding device afterward. This tests for
195 # proper cleanup of the PMTU exceptions 169 # proper cleanup of the PMTU exceptions by the route replacement path.
196 # Device unregistration should complete 170 # Device unregistration should complete successfully
197 # 171 #
198 # - pmtu_ipv6_route_change 172 # - pmtu_ipv6_route_change
199 # Same as above but with IPv6 173 # Same as above but with IPv6
200 174
201 source lib.sh !! 175 # Kselftest framework requirement - SKIP code is 4.
202 source net_helper.sh !! 176 ksft_skip=4
203 177
204 PAUSE_ON_FAIL=no 178 PAUSE_ON_FAIL=no
205 VERBOSE=0 179 VERBOSE=0
206 TRACING=0 180 TRACING=0
207 181
208 # Some systems don't have a ping6 binary anymo 182 # Some systems don't have a ping6 binary anymore
209 which ping6 > /dev/null 2>&1 && ping6=$(which 183 which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
210 184
211 # Name 185 # Name Description re-run with nh
212 tests=" 186 tests="
213 pmtu_ipv4_exception ipv4: 187 pmtu_ipv4_exception ipv4: PMTU exceptions 1
214 pmtu_ipv6_exception ipv6: 188 pmtu_ipv6_exception ipv6: PMTU exceptions 1
215 pmtu_ipv4_dscp_icmp_exception ICMPv4 <<
216 pmtu_ipv4_dscp_udp_exception UDPv4 <<
217 pmtu_ipv4_vxlan4_exception IPv4 o 189 pmtu_ipv4_vxlan4_exception IPv4 over vxlan4: PMTU exceptions 1
218 pmtu_ipv6_vxlan4_exception IPv6 o 190 pmtu_ipv6_vxlan4_exception IPv6 over vxlan4: PMTU exceptions 1
219 pmtu_ipv4_vxlan6_exception IPv4 o 191 pmtu_ipv4_vxlan6_exception IPv4 over vxlan6: PMTU exceptions 1
220 pmtu_ipv6_vxlan6_exception IPv6 o 192 pmtu_ipv6_vxlan6_exception IPv6 over vxlan6: PMTU exceptions 1
221 pmtu_ipv4_geneve4_exception IPv4 o 193 pmtu_ipv4_geneve4_exception IPv4 over geneve4: PMTU exceptions 1
222 pmtu_ipv6_geneve4_exception IPv6 o 194 pmtu_ipv6_geneve4_exception IPv6 over geneve4: PMTU exceptions 1
223 pmtu_ipv4_geneve6_exception IPv4 o 195 pmtu_ipv4_geneve6_exception IPv4 over geneve6: PMTU exceptions 1
224 pmtu_ipv6_geneve6_exception IPv6 o 196 pmtu_ipv6_geneve6_exception IPv6 over geneve6: PMTU exceptions 1
225 pmtu_ipv4_br_vxlan4_exception IPv4, 197 pmtu_ipv4_br_vxlan4_exception IPv4, bridged vxlan4: PMTU exceptions 1
226 pmtu_ipv6_br_vxlan4_exception IPv6, 198 pmtu_ipv6_br_vxlan4_exception IPv6, bridged vxlan4: PMTU exceptions 1
227 pmtu_ipv4_br_vxlan6_exception IPv4, 199 pmtu_ipv4_br_vxlan6_exception IPv4, bridged vxlan6: PMTU exceptions 1
228 pmtu_ipv6_br_vxlan6_exception IPv6, 200 pmtu_ipv6_br_vxlan6_exception IPv6, bridged vxlan6: PMTU exceptions 1
229 pmtu_ipv4_br_geneve4_exception IPv4, 201 pmtu_ipv4_br_geneve4_exception IPv4, bridged geneve4: PMTU exceptions 1
230 pmtu_ipv6_br_geneve4_exception IPv6, 202 pmtu_ipv6_br_geneve4_exception IPv6, bridged geneve4: PMTU exceptions 1
231 pmtu_ipv4_br_geneve6_exception IPv4, 203 pmtu_ipv4_br_geneve6_exception IPv4, bridged geneve6: PMTU exceptions 1
232 pmtu_ipv6_br_geneve6_exception IPv6, 204 pmtu_ipv6_br_geneve6_exception IPv6, bridged geneve6: PMTU exceptions 1
233 pmtu_ipv4_ovs_vxlan4_exception IPv4, 205 pmtu_ipv4_ovs_vxlan4_exception IPv4, OVS vxlan4: PMTU exceptions 1
234 pmtu_ipv6_ovs_vxlan4_exception IPv6, 206 pmtu_ipv6_ovs_vxlan4_exception IPv6, OVS vxlan4: PMTU exceptions 1
235 pmtu_ipv4_ovs_vxlan6_exception IPv4, 207 pmtu_ipv4_ovs_vxlan6_exception IPv4, OVS vxlan6: PMTU exceptions 1
236 pmtu_ipv6_ovs_vxlan6_exception IPv6, 208 pmtu_ipv6_ovs_vxlan6_exception IPv6, OVS vxlan6: PMTU exceptions 1
237 pmtu_ipv4_ovs_geneve4_exception IPv4, 209 pmtu_ipv4_ovs_geneve4_exception IPv4, OVS geneve4: PMTU exceptions 1
238 pmtu_ipv6_ovs_geneve4_exception IPv6, 210 pmtu_ipv6_ovs_geneve4_exception IPv6, OVS geneve4: PMTU exceptions 1
239 pmtu_ipv4_ovs_geneve6_exception IPv4, 211 pmtu_ipv4_ovs_geneve6_exception IPv4, OVS geneve6: PMTU exceptions 1
240 pmtu_ipv6_ovs_geneve6_exception IPv6, 212 pmtu_ipv6_ovs_geneve6_exception IPv6, OVS geneve6: PMTU exceptions 1
241 pmtu_ipv4_fou4_exception IPv4 o 213 pmtu_ipv4_fou4_exception IPv4 over fou4: PMTU exceptions 1
242 pmtu_ipv6_fou4_exception IPv6 o 214 pmtu_ipv6_fou4_exception IPv6 over fou4: PMTU exceptions 1
243 pmtu_ipv4_fou6_exception IPv4 o 215 pmtu_ipv4_fou6_exception IPv4 over fou6: PMTU exceptions 1
244 pmtu_ipv6_fou6_exception IPv6 o 216 pmtu_ipv6_fou6_exception IPv6 over fou6: PMTU exceptions 1
245 pmtu_ipv4_gue4_exception IPv4 o 217 pmtu_ipv4_gue4_exception IPv4 over gue4: PMTU exceptions 1
246 pmtu_ipv6_gue4_exception IPv6 o 218 pmtu_ipv6_gue4_exception IPv6 over gue4: PMTU exceptions 1
247 pmtu_ipv4_gue6_exception IPv4 o 219 pmtu_ipv4_gue6_exception IPv4 over gue6: PMTU exceptions 1
248 pmtu_ipv6_gue6_exception IPv6 o 220 pmtu_ipv6_gue6_exception IPv6 over gue6: PMTU exceptions 1
249 pmtu_ipv4_ipv4_exception IPv4 o 221 pmtu_ipv4_ipv4_exception IPv4 over IPv4: PMTU exceptions 1
250 pmtu_ipv6_ipv4_exception IPv6 o 222 pmtu_ipv6_ipv4_exception IPv6 over IPv4: PMTU exceptions 1
251 pmtu_ipv4_ipv6_exception IPv4 o 223 pmtu_ipv4_ipv6_exception IPv4 over IPv6: PMTU exceptions 1
252 pmtu_ipv6_ipv6_exception IPv6 o 224 pmtu_ipv6_ipv6_exception IPv6 over IPv6: PMTU exceptions 1
253 pmtu_vti6_exception vti6: 225 pmtu_vti6_exception vti6: PMTU exceptions 0
254 pmtu_vti4_exception vti4: 226 pmtu_vti4_exception vti4: PMTU exceptions 0
255 pmtu_vti6_udp_exception vti6: <<
256 pmtu_vti4_udp_exception vti4: <<
257 pmtu_vti6_udp_routed_exception vti6: <<
258 pmtu_vti4_udp_routed_exception vti4: <<
259 pmtu_vti4_default_mtu vti4: 227 pmtu_vti4_default_mtu vti4: default MTU assignment 0
260 pmtu_vti6_default_mtu vti6: 228 pmtu_vti6_default_mtu vti6: default MTU assignment 0
261 pmtu_vti4_link_add_mtu vti4: 229 pmtu_vti4_link_add_mtu vti4: MTU setting on link creation 0
262 pmtu_vti6_link_add_mtu vti6: 230 pmtu_vti6_link_add_mtu vti6: MTU setting on link creation 0
263 pmtu_vti6_link_change_mtu vti6: 231 pmtu_vti6_link_change_mtu vti6: MTU changes on link changes 0
264 cleanup_ipv4_exception ipv4: 232 cleanup_ipv4_exception ipv4: cleanup of cached exceptions 1
265 cleanup_ipv6_exception ipv6: 233 cleanup_ipv6_exception ipv6: cleanup of cached exceptions 1
266 list_flush_ipv4_exception ipv4: 234 list_flush_ipv4_exception ipv4: list and flush cached exceptions 1
267 list_flush_ipv6_exception ipv6: 235 list_flush_ipv6_exception ipv6: list and flush cached exceptions 1
268 pmtu_ipv4_route_change ipv4: 236 pmtu_ipv4_route_change ipv4: PMTU exception w/route replace 1
269 pmtu_ipv6_route_change ipv6: 237 pmtu_ipv6_route_change ipv6: PMTU exception w/route replace 1"
270 238
>> 239 NS_A="ns-A"
>> 240 NS_B="ns-B"
>> 241 NS_C="ns-C"
>> 242 NS_R1="ns-R1"
>> 243 NS_R2="ns-R2"
>> 244 ns_a="ip netns exec ${NS_A}"
>> 245 ns_b="ip netns exec ${NS_B}"
>> 246 ns_c="ip netns exec ${NS_C}"
>> 247 ns_r1="ip netns exec ${NS_R1}"
>> 248 ns_r2="ip netns exec ${NS_R2}"
>> 249
271 # Addressing and routing for tests with router 250 # Addressing and routing for tests with routers: four network segments, with
272 # index SEGMENT between 1 and 4, a common pref 251 # index SEGMENT between 1 and 4, a common prefix (PREFIX4 or PREFIX6) and an
273 # identifier ID, which is 1 for hosts (A and B 252 # identifier ID, which is 1 for hosts (A and B), 2 for routers (R1 and R2).
274 # Addresses are: 253 # Addresses are:
275 # - IPv4: PREFIX4.SEGMENT.ID (/24) 254 # - IPv4: PREFIX4.SEGMENT.ID (/24)
276 # - IPv6: PREFIX6:SEGMENT::ID (/64) 255 # - IPv6: PREFIX6:SEGMENT::ID (/64)
277 prefix4="10.0" 256 prefix4="10.0"
278 prefix6="fc00" 257 prefix6="fc00"
279 a_r1=1 258 a_r1=1
280 a_r2=2 259 a_r2=2
281 b_r1=3 260 b_r1=3
282 b_r2=4 261 b_r2=4
283 # ns peer segment 262 # ns peer segment
284 routing_addrs=" 263 routing_addrs="
285 A R1 ${a_r1} 264 A R1 ${a_r1}
286 A R2 ${a_r2} 265 A R2 ${a_r2}
287 B R1 ${b_r1} 266 B R1 ${b_r1}
288 B R2 ${b_r2} 267 B R2 ${b_r2}
289 " 268 "
290 # Traffic from A to B goes through R1 by defau 269 # Traffic from A to B goes through R1 by default, and through R2, if destined to
291 # B's address on the b_r2 segment. 270 # B's address on the b_r2 segment.
292 # Traffic from B to A goes through R1. 271 # Traffic from B to A goes through R1.
293 # ns destination gatewa 272 # ns destination gateway
294 routes=" 273 routes="
295 A default ${pref 274 A default ${prefix4}.${a_r1}.2
296 A ${prefix4}.${b_r2}.1 ${pref 275 A ${prefix4}.${b_r2}.1 ${prefix4}.${a_r2}.2
297 B default ${pref 276 B default ${prefix4}.${b_r1}.2
298 277
299 A default ${pref 278 A default ${prefix6}:${a_r1}::2
300 A ${prefix6}:${b_r2}::1 ${pref 279 A ${prefix6}:${b_r2}::1 ${prefix6}:${a_r2}::2
301 B default ${pref 280 B default ${prefix6}:${b_r1}::2
302 " 281 "
>> 282
303 USE_NH="no" 283 USE_NH="no"
304 # ns family nh id destination 284 # ns family nh id destination gateway
305 nexthops=" 285 nexthops="
306 A 4 41 ${prefix4}.${a 286 A 4 41 ${prefix4}.${a_r1}.2 veth_A-R1
307 A 4 42 ${prefix4}.${a 287 A 4 42 ${prefix4}.${a_r2}.2 veth_A-R2
308 B 4 41 ${prefix4}.${b 288 B 4 41 ${prefix4}.${b_r1}.2 veth_B-R1
309 289
310 A 6 61 ${prefix6}:${a 290 A 6 61 ${prefix6}:${a_r1}::2 veth_A-R1
311 A 6 62 ${prefix6}:${a 291 A 6 62 ${prefix6}:${a_r2}::2 veth_A-R2
312 B 6 61 ${prefix6}:${b 292 B 6 61 ${prefix6}:${b_r1}::2 veth_B-R1
313 " 293 "
314 294
315 # nexthop id correlates to id in nexthops conf 295 # nexthop id correlates to id in nexthops config above
316 # ns family prefix 296 # ns family prefix nh id
317 routes_nh=" 297 routes_nh="
318 A 4 default 298 A 4 default 41
319 A 4 ${prefix4}.${b_r2}.1 299 A 4 ${prefix4}.${b_r2}.1 42
320 B 4 default 300 B 4 default 41
321 301
322 A 6 default 302 A 6 default 61
323 A 6 ${prefix6}:${b_r2}::1 303 A 6 ${prefix6}:${b_r2}::1 62
324 B 6 default 304 B 6 default 61
325 " 305 "
326 306
327 policy_mark=0x04 <<
328 rt_table=main <<
329 <<
330 veth4_a_addr="192.168.1.1" 307 veth4_a_addr="192.168.1.1"
331 veth4_b_addr="192.168.1.2" 308 veth4_b_addr="192.168.1.2"
332 veth4_c_addr="192.168.2.10" 309 veth4_c_addr="192.168.2.10"
333 veth4_mask="24" 310 veth4_mask="24"
334 veth6_a_addr="fd00:1::a" 311 veth6_a_addr="fd00:1::a"
335 veth6_b_addr="fd00:1::b" 312 veth6_b_addr="fd00:1::b"
336 veth6_c_addr="fd00:2::c" 313 veth6_c_addr="fd00:2::c"
337 veth6_mask="64" 314 veth6_mask="64"
338 315
339 tunnel4_a_addr="192.168.2.1" 316 tunnel4_a_addr="192.168.2.1"
340 tunnel4_b_addr="192.168.2.2" 317 tunnel4_b_addr="192.168.2.2"
341 tunnel4_mask="24" 318 tunnel4_mask="24"
342 tunnel6_a_addr="fd00:2::a" 319 tunnel6_a_addr="fd00:2::a"
343 tunnel6_b_addr="fd00:2::b" 320 tunnel6_b_addr="fd00:2::b"
344 tunnel6_mask="64" 321 tunnel6_mask="64"
345 322
346 dummy6_0_prefix="fc00:1000::" 323 dummy6_0_prefix="fc00:1000::"
347 dummy6_1_prefix="fc00:1001::" 324 dummy6_1_prefix="fc00:1001::"
348 dummy6_mask="64" 325 dummy6_mask="64"
349 326
350 err_buf= 327 err_buf=
351 tcpdump_pids= 328 tcpdump_pids=
352 nettest_pids= <<
353 socat_pids= <<
354 tmpoutfile= <<
355 329
356 err() { 330 err() {
357 err_buf="${err_buf}${1} 331 err_buf="${err_buf}${1}
358 " 332 "
359 } 333 }
360 334
361 err_flush() { 335 err_flush() {
362 echo -n "${err_buf}" 336 echo -n "${err_buf}"
363 err_buf= 337 err_buf=
364 } 338 }
365 339
366 run_cmd() { 340 run_cmd() {
367 cmd="$*" 341 cmd="$*"
368 342
369 if [ "$VERBOSE" = "1" ]; then 343 if [ "$VERBOSE" = "1" ]; then
370 printf " COMMAND: $cmd\n" 344 printf " COMMAND: $cmd\n"
371 fi 345 fi
372 346
373 out="$($cmd 2>&1)" 347 out="$($cmd 2>&1)"
374 rc=$? 348 rc=$?
375 if [ "$VERBOSE" = "1" -a -n "$out" ]; 349 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
376 echo " $out" 350 echo " $out"
377 echo 351 echo
378 fi 352 fi
379 353
380 return $rc 354 return $rc
381 } 355 }
382 356
383 run_cmd_bg() { <<
384 cmd="$*" <<
385 <<
386 if [ "$VERBOSE" = "1" ]; then <<
387 printf " COMMAND: %s &\n" " <<
388 fi <<
389 <<
390 $cmd 2>&1 & <<
391 } <<
392 <<
393 # Find the auto-generated name for this namesp 357 # Find the auto-generated name for this namespace
394 nsname() { 358 nsname() {
395 eval echo \$NS_$1 359 eval echo \$NS_$1
396 } 360 }
397 361
398 setup_fou_or_gue() { 362 setup_fou_or_gue() {
399 outer="${1}" 363 outer="${1}"
400 inner="${2}" 364 inner="${2}"
401 encap="${3}" 365 encap="${3}"
402 366
403 if [ "${outer}" = "4" ]; then 367 if [ "${outer}" = "4" ]; then
404 modprobe fou || return $ksft_s 368 modprobe fou || return $ksft_skip
405 a_addr="${prefix4}.${a_r1}.1" 369 a_addr="${prefix4}.${a_r1}.1"
406 b_addr="${prefix4}.${b_r1}.1" 370 b_addr="${prefix4}.${b_r1}.1"
407 if [ "${inner}" = "4" ]; then 371 if [ "${inner}" = "4" ]; then
408 type="ipip" 372 type="ipip"
409 ipproto="4" 373 ipproto="4"
410 else 374 else
411 type="sit" 375 type="sit"
412 ipproto="41" 376 ipproto="41"
413 fi 377 fi
414 else 378 else
415 modprobe fou6 || return $ksft_ 379 modprobe fou6 || return $ksft_skip
416 a_addr="${prefix6}:${a_r1}::1" 380 a_addr="${prefix6}:${a_r1}::1"
417 b_addr="${prefix6}:${b_r1}::1" 381 b_addr="${prefix6}:${b_r1}::1"
418 if [ "${inner}" = "4" ]; then 382 if [ "${inner}" = "4" ]; then
419 type="ip6tnl" 383 type="ip6tnl"
420 mode="mode ipip6" 384 mode="mode ipip6"
421 ipproto="4 -6" 385 ipproto="4 -6"
422 else 386 else
423 type="ip6tnl" 387 type="ip6tnl"
424 mode="mode ip6ip6" 388 mode="mode ip6ip6"
425 ipproto="41 -6" 389 ipproto="41 -6"
426 fi 390 fi
427 fi 391 fi
428 392
429 run_cmd ${ns_a} ip fou add port 5555 i 393 run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return $ksft_skip
430 run_cmd ${ns_a} ip link add ${encap}_a 394 run_cmd ${ns_a} ip link add ${encap}_a type ${type} ${mode} local ${a_addr} remote ${b_addr} encap ${encap} encap-sport auto encap-dport 5556 || return $ksft_skip
431 395
432 run_cmd ${ns_b} ip fou add port 5556 i 396 run_cmd ${ns_b} ip fou add port 5556 ipproto ${ipproto}
433 run_cmd ${ns_b} ip link add ${encap}_b 397 run_cmd ${ns_b} ip link add ${encap}_b type ${type} ${mode} local ${b_addr} remote ${a_addr} encap ${encap} encap-sport auto encap-dport 5555
434 398
435 if [ "${inner}" = "4" ]; then 399 if [ "${inner}" = "4" ]; then
436 run_cmd ${ns_a} ip addr add ${ 400 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${encap}_a
437 run_cmd ${ns_b} ip addr add ${ 401 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${encap}_b
438 else 402 else
439 run_cmd ${ns_a} ip addr add ${ 403 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${encap}_a
440 run_cmd ${ns_b} ip addr add ${ 404 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${encap}_b
441 fi 405 fi
442 406
443 run_cmd ${ns_a} ip link set ${encap}_a 407 run_cmd ${ns_a} ip link set ${encap}_a up
444 run_cmd ${ns_b} ip link set ${encap}_b 408 run_cmd ${ns_b} ip link set ${encap}_b up
445 } 409 }
446 410
447 setup_fou44() { 411 setup_fou44() {
448 setup_fou_or_gue 4 4 fou 412 setup_fou_or_gue 4 4 fou
449 } 413 }
450 414
451 setup_fou46() { 415 setup_fou46() {
452 setup_fou_or_gue 4 6 fou 416 setup_fou_or_gue 4 6 fou
453 } 417 }
454 418
455 setup_fou64() { 419 setup_fou64() {
456 setup_fou_or_gue 6 4 fou 420 setup_fou_or_gue 6 4 fou
457 } 421 }
458 422
459 setup_fou66() { 423 setup_fou66() {
460 setup_fou_or_gue 6 6 fou 424 setup_fou_or_gue 6 6 fou
461 } 425 }
462 426
463 setup_gue44() { 427 setup_gue44() {
464 setup_fou_or_gue 4 4 gue 428 setup_fou_or_gue 4 4 gue
465 } 429 }
466 430
467 setup_gue46() { 431 setup_gue46() {
468 setup_fou_or_gue 4 6 gue 432 setup_fou_or_gue 4 6 gue
469 } 433 }
470 434
471 setup_gue64() { 435 setup_gue64() {
472 setup_fou_or_gue 6 4 gue 436 setup_fou_or_gue 6 4 gue
473 } 437 }
474 438
475 setup_gue66() { 439 setup_gue66() {
476 setup_fou_or_gue 6 6 gue 440 setup_fou_or_gue 6 6 gue
477 } 441 }
478 442
479 setup_ipvX_over_ipvY() { 443 setup_ipvX_over_ipvY() {
480 inner=${1} 444 inner=${1}
481 outer=${2} 445 outer=${2}
482 446
483 if [ "${outer}" -eq 4 ]; then 447 if [ "${outer}" -eq 4 ]; then
484 a_addr="${prefix4}.${a_r1}.1" 448 a_addr="${prefix4}.${a_r1}.1"
485 b_addr="${prefix4}.${b_r1}.1" 449 b_addr="${prefix4}.${b_r1}.1"
486 if [ "${inner}" -eq 4 ]; then 450 if [ "${inner}" -eq 4 ]; then
487 type="ipip" 451 type="ipip"
488 mode="ipip" 452 mode="ipip"
489 else 453 else
490 type="sit" 454 type="sit"
491 mode="ip6ip" 455 mode="ip6ip"
492 fi 456 fi
493 else 457 else
494 a_addr="${prefix6}:${a_r1}::1" 458 a_addr="${prefix6}:${a_r1}::1"
495 b_addr="${prefix6}:${b_r1}::1" 459 b_addr="${prefix6}:${b_r1}::1"
496 type="ip6tnl" 460 type="ip6tnl"
497 if [ "${inner}" -eq 4 ]; then 461 if [ "${inner}" -eq 4 ]; then
498 mode="ipip6" 462 mode="ipip6"
499 else 463 else
500 mode="ip6ip6" 464 mode="ip6ip6"
501 fi 465 fi
502 fi 466 fi
503 467
504 run_cmd ${ns_a} ip link add ip_a type 468 run_cmd ${ns_a} ip link add ip_a type ${type} local ${a_addr} remote ${b_addr} mode ${mode} || return $ksft_skip
505 run_cmd ${ns_b} ip link add ip_b type 469 run_cmd ${ns_b} ip link add ip_b type ${type} local ${b_addr} remote ${a_addr} mode ${mode}
506 470
507 run_cmd ${ns_a} ip link set ip_a up 471 run_cmd ${ns_a} ip link set ip_a up
508 run_cmd ${ns_b} ip link set ip_b up 472 run_cmd ${ns_b} ip link set ip_b up
509 473
510 if [ "${inner}" = "4" ]; then 474 if [ "${inner}" = "4" ]; then
511 run_cmd ${ns_a} ip addr add ${ 475 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ip_a
512 run_cmd ${ns_b} ip addr add ${ 476 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ip_b
513 else 477 else
514 run_cmd ${ns_a} ip addr add ${ 478 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ip_a
515 run_cmd ${ns_b} ip addr add ${ 479 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ip_b
516 fi 480 fi
517 } 481 }
518 482
519 setup_ip4ip4() { 483 setup_ip4ip4() {
520 setup_ipvX_over_ipvY 4 4 484 setup_ipvX_over_ipvY 4 4
521 } 485 }
522 486
523 setup_ip6ip4() { 487 setup_ip6ip4() {
524 setup_ipvX_over_ipvY 6 4 488 setup_ipvX_over_ipvY 6 4
525 } 489 }
526 490
527 setup_ip4ip6() { 491 setup_ip4ip6() {
528 setup_ipvX_over_ipvY 4 6 492 setup_ipvX_over_ipvY 4 6
529 } 493 }
530 494
531 setup_ip6ip6() { 495 setup_ip6ip6() {
532 setup_ipvX_over_ipvY 6 6 496 setup_ipvX_over_ipvY 6 6
533 } 497 }
534 498
535 setup_namespaces() { 499 setup_namespaces() {
536 setup_ns NS_A NS_B NS_C NS_R1 NS_R2 <<
537 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_ 500 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
>> 501 ip netns add ${n} || return 1
>> 502
538 # Disable DAD, so that we don' 503 # Disable DAD, so that we don't have to wait to use the
539 # configured IPv6 addresses 504 # configured IPv6 addresses
540 ip netns exec ${n} sysctl -q n 505 ip netns exec ${n} sysctl -q net/ipv6/conf/default/accept_dad=0
541 done 506 done
542 ns_a="ip netns exec ${NS_A}" <<
543 ns_b="ip netns exec ${NS_B}" <<
544 ns_c="ip netns exec ${NS_C}" <<
545 ns_r1="ip netns exec ${NS_R1}" <<
546 ns_r2="ip netns exec ${NS_R2}" <<
547 } 507 }
548 508
549 setup_veth() { 509 setup_veth() {
550 run_cmd ${ns_a} ip link add veth_a typ 510 run_cmd ${ns_a} ip link add veth_a type veth peer name veth_b || return 1
551 run_cmd ${ns_a} ip link set veth_b net 511 run_cmd ${ns_a} ip link set veth_b netns ${NS_B}
552 512
553 run_cmd ${ns_a} ip addr add ${veth4_a_ 513 run_cmd ${ns_a} ip addr add ${veth4_a_addr}/${veth4_mask} dev veth_a
554 run_cmd ${ns_b} ip addr add ${veth4_b_ 514 run_cmd ${ns_b} ip addr add ${veth4_b_addr}/${veth4_mask} dev veth_b
555 515
556 run_cmd ${ns_a} ip addr add ${veth6_a_ 516 run_cmd ${ns_a} ip addr add ${veth6_a_addr}/${veth6_mask} dev veth_a
557 run_cmd ${ns_b} ip addr add ${veth6_b_ 517 run_cmd ${ns_b} ip addr add ${veth6_b_addr}/${veth6_mask} dev veth_b
558 518
559 run_cmd ${ns_a} ip link set veth_a up 519 run_cmd ${ns_a} ip link set veth_a up
560 run_cmd ${ns_b} ip link set veth_b up 520 run_cmd ${ns_b} ip link set veth_b up
561 } 521 }
562 522
563 setup_vti() { 523 setup_vti() {
564 proto=${1} 524 proto=${1}
565 veth_a_addr="${2}" 525 veth_a_addr="${2}"
566 veth_b_addr="${3}" 526 veth_b_addr="${3}"
567 vti_a_addr="${4}" 527 vti_a_addr="${4}"
568 vti_b_addr="${5}" 528 vti_b_addr="${5}"
569 vti_mask=${6} 529 vti_mask=${6}
570 530
571 [ ${proto} -eq 6 ] && vti_type="vti6" 531 [ ${proto} -eq 6 ] && vti_type="vti6" || vti_type="vti"
572 532
573 run_cmd ${ns_a} ip link add vti${proto 533 run_cmd ${ns_a} ip link add vti${proto}_a type ${vti_type} local ${veth_a_addr} remote ${veth_b_addr} key 10 || return 1
574 run_cmd ${ns_b} ip link add vti${proto 534 run_cmd ${ns_b} ip link add vti${proto}_b type ${vti_type} local ${veth_b_addr} remote ${veth_a_addr} key 10
575 535
576 run_cmd ${ns_a} ip addr add ${vti_a_ad 536 run_cmd ${ns_a} ip addr add ${vti_a_addr}/${vti_mask} dev vti${proto}_a
577 run_cmd ${ns_b} ip addr add ${vti_b_ad 537 run_cmd ${ns_b} ip addr add ${vti_b_addr}/${vti_mask} dev vti${proto}_b
578 538
579 run_cmd ${ns_a} ip link set vti${proto 539 run_cmd ${ns_a} ip link set vti${proto}_a up
580 run_cmd ${ns_b} ip link set vti${proto 540 run_cmd ${ns_b} ip link set vti${proto}_b up
581 } 541 }
582 542
583 setup_vti4() { 543 setup_vti4() {
584 setup_vti 4 ${veth4_a_addr} ${veth4_b_ 544 setup_vti 4 ${veth4_a_addr} ${veth4_b_addr} ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
585 } 545 }
586 546
587 setup_vti6() { 547 setup_vti6() {
588 setup_vti 6 ${veth6_a_addr} ${veth6_b_ 548 setup_vti 6 ${veth6_a_addr} ${veth6_b_addr} ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
589 } 549 }
590 550
591 setup_vti4routed() { <<
592 setup_vti 4 ${prefix4}.${a_r1}.1 ${pre <<
593 } <<
594 <<
595 setup_vti6routed() { <<
596 setup_vti 6 ${prefix6}:${a_r1}::1 ${pr <<
597 } <<
598 <<
599 setup_vxlan_or_geneve() { 551 setup_vxlan_or_geneve() {
600 type="${1}" 552 type="${1}"
601 a_addr="${2}" 553 a_addr="${2}"
602 b_addr="${3}" 554 b_addr="${3}"
603 opts="${4}" 555 opts="${4}"
604 br_if_a="${5}" 556 br_if_a="${5}"
605 557
606 if [ "${type}" = "vxlan" ]; then 558 if [ "${type}" = "vxlan" ]; then
607 opts="${opts} ttl 64 dstport 4 559 opts="${opts} ttl 64 dstport 4789"
608 opts_a="local ${a_addr}" 560 opts_a="local ${a_addr}"
609 opts_b="local ${b_addr}" 561 opts_b="local ${b_addr}"
610 else 562 else
611 opts_a="" 563 opts_a=""
612 opts_b="" 564 opts_b=""
613 fi 565 fi
614 566
615 run_cmd ${ns_a} ip link add ${type}_a 567 run_cmd ${ns_a} ip link add ${type}_a type ${type} id 1 ${opts_a} remote ${b_addr} ${opts} || return 1
616 run_cmd ${ns_b} ip link add ${type}_b 568 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts}
617 569
618 if [ -n "${br_if_a}" ]; then 570 if [ -n "${br_if_a}" ]; then
619 run_cmd ${ns_a} ip addr add ${ 571 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${br_if_a}
620 run_cmd ${ns_a} ip addr add ${ 572 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${br_if_a}
621 run_cmd ${ns_a} ip link set ${ 573 run_cmd ${ns_a} ip link set ${type}_a master ${br_if_a}
622 else 574 else
623 run_cmd ${ns_a} ip addr add ${ 575 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${type}_a
624 run_cmd ${ns_a} ip addr add ${ 576 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${type}_a
625 fi 577 fi
626 578
627 run_cmd ${ns_b} ip addr add ${tunnel4_ 579 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
628 run_cmd ${ns_b} ip addr add ${tunnel6_ 580 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
629 581
630 run_cmd ${ns_a} ip link set ${type}_a 582 run_cmd ${ns_a} ip link set ${type}_a up
631 run_cmd ${ns_b} ip link set ${type}_b 583 run_cmd ${ns_b} ip link set ${type}_b up
632 } 584 }
633 585
634 setup_geneve4() { 586 setup_geneve4() {
635 setup_vxlan_or_geneve geneve ${prefix4 587 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
636 } 588 }
637 589
638 setup_vxlan4() { 590 setup_vxlan4() {
639 setup_vxlan_or_geneve vxlan ${prefix4 591 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
640 } 592 }
641 593
642 setup_geneve6() { 594 setup_geneve6() {
643 setup_vxlan_or_geneve geneve ${prefix6 595 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
644 } 596 }
645 597
646 setup_vxlan6() { 598 setup_vxlan6() {
647 setup_vxlan_or_geneve vxlan ${prefix6 599 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
648 } 600 }
649 601
650 setup_bridged_geneve4() { 602 setup_bridged_geneve4() {
651 setup_vxlan_or_geneve geneve ${prefix4 603 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
652 } 604 }
653 605
654 setup_bridged_vxlan4() { 606 setup_bridged_vxlan4() {
655 setup_vxlan_or_geneve vxlan ${prefix4 607 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
656 } 608 }
657 609
658 setup_bridged_geneve6() { 610 setup_bridged_geneve6() {
659 setup_vxlan_or_geneve geneve ${prefix6 611 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
660 } 612 }
661 613
662 setup_bridged_vxlan6() { 614 setup_bridged_vxlan6() {
663 setup_vxlan_or_geneve vxlan ${prefix6 615 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
664 } 616 }
665 617
666 setup_xfrm() { 618 setup_xfrm() {
667 proto=${1} 619 proto=${1}
668 veth_a_addr="${2}" 620 veth_a_addr="${2}"
669 veth_b_addr="${3}" 621 veth_b_addr="${3}"
670 encap=${4} <<
671 622
672 run_cmd ${ns_a} ip -${proto} xfrm stat !! 623 run_cmd ${ns_a} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel || return 1
673 run_cmd ${ns_a} ip -${proto} xfrm stat !! 624 run_cmd ${ns_a} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel
674 run_cmd ${ns_a} ip -${proto} xfrm poli 625 run_cmd ${ns_a} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
675 run_cmd ${ns_a} ip -${proto} xfrm poli 626 run_cmd ${ns_a} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel
676 627
677 run_cmd ${ns_b} ip -${proto} xfrm stat !! 628 run_cmd ${ns_b} ip -${proto} xfrm state add src ${veth_a_addr} dst ${veth_b_addr} spi 0x1000 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel
678 run_cmd ${ns_b} ip -${proto} xfrm stat !! 629 run_cmd ${ns_b} ip -${proto} xfrm state add src ${veth_b_addr} dst ${veth_a_addr} spi 0x1001 proto esp aead 'rfc4106(gcm(aes))' 0x0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f 128 mode tunnel
679 run_cmd ${ns_b} ip -${proto} xfrm poli 630 run_cmd ${ns_b} ip -${proto} xfrm policy add dir out mark 10 tmpl src ${veth_b_addr} dst ${veth_a_addr} proto esp mode tunnel
680 run_cmd ${ns_b} ip -${proto} xfrm poli 631 run_cmd ${ns_b} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
681 } 632 }
682 633
683 setup_nettest_xfrm() { <<
684 if ! which nettest >/dev/null; then <<
685 PATH=$PWD:$PATH <<
686 if ! which nettest >/dev/null; <<
687 echo "'nettest' comman <<
688 return 1 <<
689 fi <<
690 fi <<
691 <<
692 [ ${1} -eq 6 ] && proto="-6" || proto= <<
693 port=${2} <<
694 <<
695 run_cmd_bg "${ns_a}" nettest "${proto} <<
696 nettest_pids="${nettest_pids} $!" <<
697 <<
698 run_cmd_bg "${ns_b}" nettest "${proto} <<
699 nettest_pids="${nettest_pids} $!" <<
700 } <<
701 <<
702 setup_xfrm4() { 634 setup_xfrm4() {
703 setup_xfrm 4 ${veth4_a_addr} ${veth4_b 635 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr}
704 } 636 }
705 637
706 setup_xfrm6() { 638 setup_xfrm6() {
707 setup_xfrm 6 ${veth6_a_addr} ${veth6_b 639 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr}
708 } 640 }
709 641
710 setup_xfrm4udp() { <<
711 setup_xfrm 4 ${veth4_a_addr} ${veth4_b <<
712 setup_nettest_xfrm 4 4500 <<
713 } <<
714 <<
715 setup_xfrm6udp() { <<
716 setup_xfrm 6 ${veth6_a_addr} ${veth6_b <<
717 setup_nettest_xfrm 6 4500 <<
718 } <<
719 <<
720 setup_xfrm4udprouted() { <<
721 setup_xfrm 4 ${prefix4}.${a_r1}.1 ${pr <<
722 setup_nettest_xfrm 4 4500 <<
723 } <<
724 <<
725 setup_xfrm6udprouted() { <<
726 setup_xfrm 6 ${prefix6}:${a_r1}::1 ${p <<
727 setup_nettest_xfrm 6 4500 <<
728 } <<
729 <<
730 setup_routing_old() { 642 setup_routing_old() {
731 for i in ${routes}; do 643 for i in ${routes}; do
732 [ "${ns}" = "" ] && ns= 644 [ "${ns}" = "" ] && ns="${i}" && continue
733 [ "${addr}" = "" ] && add 645 [ "${addr}" = "" ] && addr="${i}" && continue
734 [ "${gw}" = "" ] && gw= 646 [ "${gw}" = "" ] && gw="${i}"
735 647
736 ns_name="$(nsname ${ns})" 648 ns_name="$(nsname ${ns})"
737 649
738 ip -n "${ns_name}" route add " !! 650 ip -n ${ns_name} route add ${addr} via ${gw}
739 651
740 ns=""; addr=""; gw="" 652 ns=""; addr=""; gw=""
741 done 653 done
742 } 654 }
743 655
744 setup_routing_new() { 656 setup_routing_new() {
745 for i in ${nexthops}; do 657 for i in ${nexthops}; do
746 [ "${ns}" = "" ] && ns= 658 [ "${ns}" = "" ] && ns="${i}" && continue
747 [ "${fam}" = "" ] && fam 659 [ "${fam}" = "" ] && fam="${i}" && continue
748 [ "${nhid}" = "" ] && nhi 660 [ "${nhid}" = "" ] && nhid="${i}" && continue
749 [ "${gw}" = "" ] && gw= 661 [ "${gw}" = "" ] && gw="${i}" && continue
750 [ "${dev}" = "" ] && dev 662 [ "${dev}" = "" ] && dev="${i}"
751 663
752 ns_name="$(nsname ${ns})" 664 ns_name="$(nsname ${ns})"
753 665
754 ip -n ${ns_name} -${fam} nexth 666 ip -n ${ns_name} -${fam} nexthop add id ${nhid} via ${gw} dev ${dev}
755 667
756 ns=""; fam=""; nhid=""; gw=""; 668 ns=""; fam=""; nhid=""; gw=""; dev=""
757 669
758 done 670 done
759 671
760 for i in ${routes_nh}; do 672 for i in ${routes_nh}; do
761 [ "${ns}" = "" ] && ns= 673 [ "${ns}" = "" ] && ns="${i}" && continue
762 [ "${fam}" = "" ] && fam 674 [ "${fam}" = "" ] && fam="${i}" && continue
763 [ "${addr}" = "" ] && add 675 [ "${addr}" = "" ] && addr="${i}" && continue
764 [ "${nhid}" = "" ] && nhi 676 [ "${nhid}" = "" ] && nhid="${i}"
765 677
766 ns_name="$(nsname ${ns})" 678 ns_name="$(nsname ${ns})"
767 679
768 ip -n "${ns_name}" -"${fam}" r !! 680 ip -n ${ns_name} -${fam} route add ${addr} nhid ${nhid}
769 681
770 ns=""; fam=""; addr=""; nhid=" 682 ns=""; fam=""; addr=""; nhid=""
771 done 683 done
772 } 684 }
773 685
774 setup_routing() { 686 setup_routing() {
775 for i in ${NS_R1} ${NS_R2}; do 687 for i in ${NS_R1} ${NS_R2}; do
776 ip netns exec ${i} sysctl -q n 688 ip netns exec ${i} sysctl -q net/ipv4/ip_forward=1
777 ip netns exec ${i} sysctl -q n 689 ip netns exec ${i} sysctl -q net/ipv6/conf/all/forwarding=1
778 done 690 done
779 691
780 for i in ${routing_addrs}; do 692 for i in ${routing_addrs}; do
781 [ "${ns}" = "" ] && ns= 693 [ "${ns}" = "" ] && ns="${i}" && continue
782 [ "${peer}" = "" ] && pee 694 [ "${peer}" = "" ] && peer="${i}" && continue
783 [ "${segment}" = "" ] && seg 695 [ "${segment}" = "" ] && segment="${i}"
784 696
785 ns_name="$(nsname ${ns})" 697 ns_name="$(nsname ${ns})"
786 peer_name="$(nsname ${peer})" 698 peer_name="$(nsname ${peer})"
787 if="veth_${ns}-${peer}" 699 if="veth_${ns}-${peer}"
788 ifpeer="veth_${peer}-${ns}" 700 ifpeer="veth_${peer}-${ns}"
789 701
790 # Create veth links 702 # Create veth links
791 ip link add ${if} up netns ${n 703 ip link add ${if} up netns ${ns_name} type veth peer name ${ifpeer} netns ${peer_name} || return 1
792 ip -n ${peer_name} link set de 704 ip -n ${peer_name} link set dev ${ifpeer} up
793 705
794 # Add addresses 706 # Add addresses
795 ip -n ${ns_name} addr add ${ 707 ip -n ${ns_name} addr add ${prefix4}.${segment}.1/24 dev ${if}
796 ip -n ${ns_name} addr add ${ 708 ip -n ${ns_name} addr add ${prefix6}:${segment}::1/64 dev ${if}
797 709
798 ip -n ${peer_name} addr add ${ 710 ip -n ${peer_name} addr add ${prefix4}.${segment}.2/24 dev ${ifpeer}
799 ip -n ${peer_name} addr add ${ 711 ip -n ${peer_name} addr add ${prefix6}:${segment}::2/64 dev ${ifpeer}
800 712
801 ns=""; peer=""; segment="" 713 ns=""; peer=""; segment=""
802 done 714 done
803 715
804 if [ "$USE_NH" = "yes" ]; then 716 if [ "$USE_NH" = "yes" ]; then
805 setup_routing_new 717 setup_routing_new
806 else 718 else
807 setup_routing_old 719 setup_routing_old
808 fi 720 fi
809 721
810 return 0 722 return 0
811 } 723 }
812 724
813 setup_policy_routing() { <<
814 setup_routing <<
815 <<
816 ip -netns "${NS_A}" -4 rule add dsfiel <<
817 table "${rt_table}" <<
818 <<
819 # Set the IPv4 Don't Fragment bit with <<
820 # have an option do to it. <<
821 tc -netns "${NS_A}" qdisc replace dev <<
822 tc -netns "${NS_A}" qdisc replace dev <<
823 tc -netns "${NS_A}" filter add dev vet <<
824 protocol ipv4 flower ip_proto <<
825 action pedit ex munge ip df se <<
826 tc -netns "${NS_A}" filter add dev vet <<
827 protocol ipv4 flower ip_proto <<
828 action pedit ex munge ip df se <<
829 } <<
830 <<
831 setup_bridge() { 725 setup_bridge() {
832 run_cmd ${ns_a} ip link add br0 type b 726 run_cmd ${ns_a} ip link add br0 type bridge || return $ksft_skip
833 run_cmd ${ns_a} ip link set br0 up 727 run_cmd ${ns_a} ip link set br0 up
834 728
835 run_cmd ${ns_c} ip link add veth_C-A t 729 run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
836 run_cmd ${ns_c} ip link set veth_A-C n !! 730 run_cmd ${ns_c} ip link set veth_A-C netns ns-A
837 731
838 run_cmd ${ns_a} ip link set veth_A-C u 732 run_cmd ${ns_a} ip link set veth_A-C up
839 run_cmd ${ns_c} ip link set veth_C-A u 733 run_cmd ${ns_c} ip link set veth_C-A up
840 run_cmd ${ns_c} ip addr add ${veth4_c_ 734 run_cmd ${ns_c} ip addr add ${veth4_c_addr}/${veth4_mask} dev veth_C-A
841 run_cmd ${ns_c} ip addr add ${veth6_c_ 735 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
842 run_cmd ${ns_a} ip link set veth_A-C m 736 run_cmd ${ns_a} ip link set veth_A-C master br0
843 } 737 }
844 738
845 setup_ovs_via_internal_utility() { <<
846 type="${1}" <<
847 a_addr="${2}" <<
848 b_addr="${3}" <<
849 dport="${4}" <<
850 <<
851 run_cmd python3 ./openvswitch/ovs-dpct <<
852 <<
853 ports=$(python3 ./openvswitch/ovs-dpct <<
854 br0_port=$(echo "$ports" | grep -E "\s <<
855 type_a_port=$(echo "$ports" | grep ${t <<
856 veth_a_port=$(echo "$ports" | grep vet <<
857 <<
858 v4_a_tun="${prefix4}.${a_r1}.1" <<
859 v4_b_tun="${prefix4}.${b_r1}.1" <<
860 <<
861 v6_a_tun="${prefix6}:${a_r1}::1" <<
862 v6_b_tun="${prefix6}:${b_r1}::1" <<
863 <<
864 if [ "${v4_a_tun}" = "${a_addr}" ]; th <<
865 run_cmd python3 ./openvswitch/ <<
866 "recirc_id(0),in_port(${ve <<
867 "set(tunnel(tun_id=1,dst=$ <<
868 run_cmd python3 ./openvswitch/ <<
869 "recirc_id(0),in_port(${ve <<
870 "set(tunnel(tun_id=1,dst=$ <<
871 run_cmd python3 ./openvswitch/ <<
872 "recirc_id(0),tunnel(tun_i <<
873 "${veth_a_port}" <<
874 run_cmd python3 ./openvswitch/ <<
875 "recirc_id(0),tunnel(tun_i <<
876 "${veth_a_port}" <<
877 run_cmd python3 ./openvswitch/ <<
878 "recirc_id(0),tunnel(tun_i <<
879 "${veth_a_port}" <<
880 run_cmd python3 ./openvswitch/ <<
881 "recirc_id(0),in_port(${ve <<
882 "set(tunnel(tun_id=1,dst=$ <<
883 else <<
884 run_cmd python3 ./openvswitch/ <<
885 "recirc_id(0),in_port(${ve <<
886 "set(tunnel(tun_id=1,ipv6_ <<
887 run_cmd python3 ./openvswitch/ <<
888 "recirc_id(0),in_port(${ve <<
889 "set(tunnel(tun_id=1,ipv6_ <<
890 run_cmd python3 ./openvswitch/ <<
891 "recirc_id(0),tunnel(tun_i <<
892 "${veth_a_port}" <<
893 run_cmd python3 ./openvswitch/ <<
894 "recirc_id(0),tunnel(tun_i <<
895 "${veth_a_port}" <<
896 run_cmd python3 ./openvswitch/ <<
897 "recirc_id(0),tunnel(tun_i <<
898 "${veth_a_port}" <<
899 run_cmd python3 ./openvswitch/ <<
900 "recirc_id(0),in_port(${ve <<
901 "set(tunnel(tun_id=1,ipv6_ <<
902 fi <<
903 } <<
904 <<
905 setup_ovs_via_vswitchd() { <<
906 type="${1}" <<
907 b_addr="${2}" <<
908 <<
909 run_cmd ovs-vsctl add-port ovs_br0 ${t <<
910 set interface ${type}_a type=$ <<
911 options:remote_ip=${b_addr} op <<
912 } <<
913 <<
914 setup_ovs_vxlan_or_geneve() { 739 setup_ovs_vxlan_or_geneve() {
915 type="${1}" 740 type="${1}"
916 a_addr="${2}" 741 a_addr="${2}"
917 b_addr="${3}" 742 b_addr="${3}"
918 dport="6081" <<
919 743
920 if [ "${type}" = "vxlan" ]; then 744 if [ "${type}" = "vxlan" ]; then
921 dport="4789" <<
922 opts="${opts} ttl 64 dstport 4 745 opts="${opts} ttl 64 dstport 4789"
923 opts_b="local ${b_addr}" 746 opts_b="local ${b_addr}"
924 fi 747 fi
925 748
926 setup_ovs_via_internal_utility "${type !! 749 run_cmd ovs-vsctl add-port ovs_br0 ${type}_a -- \
927 "${dpor !! 750 set interface ${type}_a type=${type} \
928 setup_ovs_via_vswitchd "${type}" " !! 751 options:remote_ip=${b_addr} options:key=1 options:csum=true || return 1
929 752
930 run_cmd ${ns_b} ip link add ${type}_b 753 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts} || return 1
931 754
932 run_cmd ${ns_b} ip addr add ${tunnel4_ 755 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
933 run_cmd ${ns_b} ip addr add ${tunnel6_ 756 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
934 757
935 run_cmd ip link set ${type}_a up <<
936 run_cmd ${ns_b} ip link set ${type}_b 758 run_cmd ${ns_b} ip link set ${type}_b up
937 } 759 }
938 760
939 setup_ovs_geneve4() { 761 setup_ovs_geneve4() {
940 setup_ovs_vxlan_or_geneve geneve ${pre 762 setup_ovs_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
941 } 763 }
942 764
943 setup_ovs_vxlan4() { 765 setup_ovs_vxlan4() {
944 setup_ovs_vxlan_or_geneve vxlan ${pre 766 setup_ovs_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
945 } 767 }
946 768
947 setup_ovs_geneve6() { 769 setup_ovs_geneve6() {
948 setup_ovs_vxlan_or_geneve geneve ${pre 770 setup_ovs_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
949 } 771 }
950 772
951 setup_ovs_vxlan6() { 773 setup_ovs_vxlan6() {
952 setup_ovs_vxlan_or_geneve vxlan ${pre 774 setup_ovs_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
953 } 775 }
954 776
955 setup_ovs_br_internal() { <<
956 run_cmd python3 ./openvswitch/ovs-dpct <<
957 return 1 <<
958 } <<
959 <<
960 setup_ovs_br_vswitchd() { <<
961 run_cmd ovs-vsctl add-br ovs_br0 || re <<
962 } <<
963 <<
964 setup_ovs_add_if() { <<
965 ifname="${1}" <<
966 run_cmd python3 ./openvswitch/ovs-dpct <<
967 "${ifname}" || \ <<
968 run_cmd ovs-vsctl add-port ovs <<
969 } <<
970 <<
971 setup_ovs_bridge() { 777 setup_ovs_bridge() {
972 setup_ovs_br_internal || setup_ovs_br_ !! 778 run_cmd ovs-vsctl add-br ovs_br0 || return $ksft_skip
973 run_cmd ip link set ovs_br0 up 779 run_cmd ip link set ovs_br0 up
974 780
975 run_cmd ${ns_c} ip link add veth_C-A t 781 run_cmd ${ns_c} ip link add veth_C-A type veth peer name veth_A-C
976 run_cmd ${ns_c} ip link set veth_A-C n 782 run_cmd ${ns_c} ip link set veth_A-C netns 1
977 783
978 run_cmd ip link set veth_A-C u 784 run_cmd ip link set veth_A-C up
979 run_cmd ${ns_c} ip link set veth_C-A u 785 run_cmd ${ns_c} ip link set veth_C-A up
980 run_cmd ${ns_c} ip addr add ${veth4_c_ 786 run_cmd ${ns_c} ip addr add ${veth4_c_addr}/${veth4_mask} dev veth_C-A
981 run_cmd ${ns_c} ip addr add ${veth6_c_ 787 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
982 setup_ovs_add_if veth_A-C !! 788 run_cmd ovs-vsctl add-port ovs_br0 veth_A-C
983 789
984 # Move veth_A-R1 to init 790 # Move veth_A-R1 to init
985 run_cmd ${ns_a} ip link set veth_A-R1 791 run_cmd ${ns_a} ip link set veth_A-R1 netns 1
986 run_cmd ip addr add ${prefix4}.${a_r1} 792 run_cmd ip addr add ${prefix4}.${a_r1}.1/${veth4_mask} dev veth_A-R1
987 run_cmd ip addr add ${prefix6}:${a_r1} 793 run_cmd ip addr add ${prefix6}:${a_r1}::1/${veth6_mask} dev veth_A-R1
988 run_cmd ip link set veth_A-R1 up 794 run_cmd ip link set veth_A-R1 up
989 run_cmd ip route add ${prefix4}.${b_r1 795 run_cmd ip route add ${prefix4}.${b_r1}.1 via ${prefix4}.${a_r1}.2
990 run_cmd ip route add ${prefix6}:${b_r1 796 run_cmd ip route add ${prefix6}:${b_r1}::1 via ${prefix6}:${a_r1}::2
991 } 797 }
992 798
993 setup() { 799 setup() {
994 [ "$(id -u)" -ne 0 ] && echo " need t 800 [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip
995 801
>> 802 cleanup
996 for arg do 803 for arg do
997 eval setup_${arg} || { echo " 804 eval setup_${arg} || { echo " ${arg} not supported"; return 1; }
998 done 805 done
999 } 806 }
1000 807
1001 trace() { 808 trace() {
1002 [ $TRACING -eq 0 ] && return 809 [ $TRACING -eq 0 ] && return
1003 810
1004 for arg do 811 for arg do
1005 [ "${ns_cmd}" = "" ] && ns_cm 812 [ "${ns_cmd}" = "" ] && ns_cmd="${arg}" && continue
1006 ${ns_cmd} tcpdump --immediate !! 813 ${ns_cmd} tcpdump -s 0 -i "${arg}" -w "${name}_${arg}.pcap" 2> /dev/null &
1007 tcpdump_pids="${tcpdump_pids} 814 tcpdump_pids="${tcpdump_pids} $!"
1008 ns_cmd= 815 ns_cmd=
1009 done 816 done
1010 sleep 1 817 sleep 1
1011 } 818 }
1012 819
1013 cleanup_del_ovs_internal() { <<
1014 # squelch the output of the del-if co <<
1015 python3 ./openvswitch/ovs-dpctl.py de <<
1016 python3 ./openvswitch/ovs-dpctl.py de <<
1017 python3 ./openvswitch/ovs-dpctl.py de <<
1018 } <<
1019 <<
1020 cleanup_del_ovs_vswitchd() { <<
1021 ovs-vsctl --if-exists del-port vxlan_ <<
1022 ovs-vsctl --if-exists del-br ovs_br0 <<
1023 } <<
1024 <<
1025 cleanup() { 820 cleanup() {
1026 for pid in ${tcpdump_pids}; do 821 for pid in ${tcpdump_pids}; do
1027 kill ${pid} 822 kill ${pid}
1028 done 823 done
1029 tcpdump_pids= 824 tcpdump_pids=
1030 825
1031 for pid in ${nettest_pids}; do !! 826 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
1032 kill ${pid} !! 827 ip netns del ${n} 2> /dev/null
1033 done <<
1034 nettest_pids= <<
1035 <<
1036 for pid in ${socat_pids}; do <<
1037 kill "${pid}" <<
1038 done 828 done
1039 socat_pids= <<
1040 829
1041 cleanup_all_ns !! 830 ip link del veth_A-C 2>/dev/null
1042 !! 831 ip link del veth_A-R1 2>/dev/null
1043 ip link del veth_A-C 2>/de !! 832 ovs-vsctl --if-exists del-port vxlan_a 2>/dev/null
1044 ip link del veth_A-R1 2>/de !! 833 ovs-vsctl --if-exists del-br ovs_br0 2>/dev/null
1045 cleanup_del_ovs_internal <<
1046 cleanup_del_ovs_vswitchd <<
1047 rm -f "$tmpoutfile" <<
1048 } 834 }
1049 835
1050 mtu() { 836 mtu() {
1051 ns_cmd="${1}" 837 ns_cmd="${1}"
1052 dev="${2}" 838 dev="${2}"
1053 mtu="${3}" 839 mtu="${3}"
1054 840
1055 ${ns_cmd} ip link set dev ${dev} mtu 841 ${ns_cmd} ip link set dev ${dev} mtu ${mtu}
1056 } 842 }
1057 843
1058 mtu_parse() { 844 mtu_parse() {
1059 input="${1}" 845 input="${1}"
1060 846
1061 next=0 847 next=0
1062 for i in ${input}; do 848 for i in ${input}; do
1063 [ ${next} -eq 1 -a "${i}" = " 849 [ ${next} -eq 1 -a "${i}" = "lock" ] && next=2 && continue
1064 [ ${next} -eq 1 ] && echo "${ 850 [ ${next} -eq 1 ] && echo "${i}" && return
1065 [ ${next} -eq 2 ] && echo "lo 851 [ ${next} -eq 2 ] && echo "lock ${i}" && return
1066 [ "${i}" = "mtu" ] && next=1 852 [ "${i}" = "mtu" ] && next=1
1067 done 853 done
1068 } 854 }
1069 855
1070 link_get() { 856 link_get() {
1071 ns_cmd="${1}" 857 ns_cmd="${1}"
1072 name="${2}" 858 name="${2}"
1073 859
1074 ${ns_cmd} ip link show dev "${name}" 860 ${ns_cmd} ip link show dev "${name}"
1075 } 861 }
1076 862
1077 link_get_mtu() { 863 link_get_mtu() {
1078 ns_cmd="${1}" 864 ns_cmd="${1}"
1079 name="${2}" 865 name="${2}"
1080 866
1081 mtu_parse "$(link_get "${ns_cmd}" ${n 867 mtu_parse "$(link_get "${ns_cmd}" ${name})"
1082 } 868 }
1083 869
1084 route_get_dst_exception() { 870 route_get_dst_exception() {
1085 ns_cmd="${1}" 871 ns_cmd="${1}"
1086 dst="${2}" 872 dst="${2}"
1087 dsfield="${3}" <<
1088 <<
1089 if [ -z "${dsfield}" ]; then <<
1090 dsfield=0 <<
1091 fi <<
1092 873
1093 ${ns_cmd} ip route get "${dst}" dsfie !! 874 ${ns_cmd} ip route get "${dst}"
1094 } 875 }
1095 876
1096 route_get_dst_pmtu_from_exception() { 877 route_get_dst_pmtu_from_exception() {
1097 ns_cmd="${1}" 878 ns_cmd="${1}"
1098 dst="${2}" 879 dst="${2}"
1099 dsfield="${3}" <<
1100 880
1101 mtu_parse "$(route_get_dst_exception !! 881 mtu_parse "$(route_get_dst_exception "${ns_cmd}" ${dst})"
1102 } 882 }
1103 883
1104 check_pmtu_value() { 884 check_pmtu_value() {
1105 expected="${1}" 885 expected="${1}"
1106 value="${2}" 886 value="${2}"
1107 event="${3}" 887 event="${3}"
1108 888
1109 [ "${expected}" = "any" ] && [ -n "${ 889 [ "${expected}" = "any" ] && [ -n "${value}" ] && return 0
1110 [ "${value}" = "${expected}" ] && ret 890 [ "${value}" = "${expected}" ] && return 0
1111 [ -z "${value}" ] && err " PMTU e 891 [ -z "${value}" ] && err " PMTU exception wasn't created after ${event}" && return 1
1112 [ -z "${expected}" ] && err " PMTU e 892 [ -z "${expected}" ] && err " PMTU exception shouldn't exist after ${event}" && return 1
1113 err " found PMTU exception with inco 893 err " found PMTU exception with incorrect MTU ${value}, expected ${expected}, after ${event}"
1114 return 1 894 return 1
1115 } 895 }
1116 896
1117 test_pmtu_ipvX() { 897 test_pmtu_ipvX() {
1118 family=${1} 898 family=${1}
1119 899
1120 setup namespaces routing || return $k 900 setup namespaces routing || return $ksft_skip
1121 trace "${ns_a}" veth_A-R1 "${ns_r 901 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1122 "${ns_r1}" veth_R1-B "${ns_b 902 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1123 "${ns_a}" veth_A-R2 "${ns_r 903 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1124 "${ns_r2}" veth_R2-B "${ns_b 904 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1125 905
1126 if [ ${family} -eq 4 ]; then 906 if [ ${family} -eq 4 ]; then
1127 ping=ping 907 ping=ping
1128 dst1="${prefix4}.${b_r1}.1" 908 dst1="${prefix4}.${b_r1}.1"
1129 dst2="${prefix4}.${b_r2}.1" 909 dst2="${prefix4}.${b_r2}.1"
1130 else 910 else
1131 ping=${ping6} 911 ping=${ping6}
1132 dst1="${prefix6}:${b_r1}::1" 912 dst1="${prefix6}:${b_r1}::1"
1133 dst2="${prefix6}:${b_r2}::1" 913 dst2="${prefix6}:${b_r2}::1"
1134 fi 914 fi
1135 915
1136 # Set up initial MTU values 916 # Set up initial MTU values
1137 mtu "${ns_a}" veth_A-R1 2000 917 mtu "${ns_a}" veth_A-R1 2000
1138 mtu "${ns_r1}" veth_R1-A 2000 918 mtu "${ns_r1}" veth_R1-A 2000
1139 mtu "${ns_r1}" veth_R1-B 1400 919 mtu "${ns_r1}" veth_R1-B 1400
1140 mtu "${ns_b}" veth_B-R1 1400 920 mtu "${ns_b}" veth_B-R1 1400
1141 921
1142 mtu "${ns_a}" veth_A-R2 2000 922 mtu "${ns_a}" veth_A-R2 2000
1143 mtu "${ns_r2}" veth_R2-A 2000 923 mtu "${ns_r2}" veth_R2-A 2000
1144 mtu "${ns_r2}" veth_R2-B 1500 924 mtu "${ns_r2}" veth_R2-B 1500
1145 mtu "${ns_b}" veth_B-R2 1500 925 mtu "${ns_b}" veth_B-R2 1500
1146 926
1147 # Create route exceptions 927 # Create route exceptions
1148 run_cmd ${ns_a} ${ping} -q -M want -i 928 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst1}
1149 run_cmd ${ns_a} ${ping} -q -M want -i 929 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
1150 930
1151 # Check that exceptions have been cre 931 # Check that exceptions have been created with the correct PMTU
1152 pmtu_1="$(route_get_dst_pmtu_from_exc 932 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1153 check_pmtu_value "1400" "${pmtu_1}" " 933 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1154 pmtu_2="$(route_get_dst_pmtu_from_exc 934 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1155 check_pmtu_value "1500" "${pmtu_2}" " 935 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1156 936
1157 # Decrease local MTU below PMTU, chec 937 # Decrease local MTU below PMTU, check for PMTU decrease in route exception
1158 mtu "${ns_a}" veth_A-R1 1300 938 mtu "${ns_a}" veth_A-R1 1300
1159 mtu "${ns_r1}" veth_R1-A 1300 939 mtu "${ns_r1}" veth_R1-A 1300
1160 pmtu_1="$(route_get_dst_pmtu_from_exc 940 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1161 check_pmtu_value "1300" "${pmtu_1}" " 941 check_pmtu_value "1300" "${pmtu_1}" "decreasing local MTU" || return 1
1162 # Second exception shouldn't be modif 942 # Second exception shouldn't be modified
1163 pmtu_2="$(route_get_dst_pmtu_from_exc 943 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1164 check_pmtu_value "1500" "${pmtu_2}" " 944 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1165 945
1166 # Increase MTU, check for PMTU increa 946 # Increase MTU, check for PMTU increase in route exception
1167 mtu "${ns_a}" veth_A-R1 1700 947 mtu "${ns_a}" veth_A-R1 1700
1168 mtu "${ns_r1}" veth_R1-A 1700 948 mtu "${ns_r1}" veth_R1-A 1700
1169 pmtu_1="$(route_get_dst_pmtu_from_exc 949 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1170 check_pmtu_value "1700" "${pmtu_1}" " 950 check_pmtu_value "1700" "${pmtu_1}" "increasing local MTU" || return 1
1171 # Second exception shouldn't be modif 951 # Second exception shouldn't be modified
1172 pmtu_2="$(route_get_dst_pmtu_from_exc 952 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1173 check_pmtu_value "1500" "${pmtu_2}" " 953 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1174 954
1175 # Skip PMTU locking tests for IPv6 955 # Skip PMTU locking tests for IPv6
1176 [ $family -eq 6 ] && return 0 956 [ $family -eq 6 ] && return 0
1177 957
1178 # Decrease remote MTU on path via R2, 958 # Decrease remote MTU on path via R2, get new exception
1179 mtu "${ns_r2}" veth_R2-B 400 959 mtu "${ns_r2}" veth_R2-B 400
1180 mtu "${ns_b}" veth_B-R2 400 960 mtu "${ns_b}" veth_B-R2 400
1181 run_cmd ${ns_a} ${ping} -q -M want -i 961 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1400 ${dst2}
1182 pmtu_2="$(route_get_dst_pmtu_from_exc 962 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1183 check_pmtu_value "lock 552" "${pmtu_2 963 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1184 964
1185 # Decrease local MTU below PMTU 965 # Decrease local MTU below PMTU
1186 mtu "${ns_a}" veth_A-R2 500 966 mtu "${ns_a}" veth_A-R2 500
1187 mtu "${ns_r2}" veth_R2-A 500 967 mtu "${ns_r2}" veth_R2-A 500
1188 pmtu_2="$(route_get_dst_pmtu_from_exc 968 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1189 check_pmtu_value "500" "${pmtu_2}" "d 969 check_pmtu_value "500" "${pmtu_2}" "decreasing local MTU" || return 1
1190 970
1191 # Increase local MTU 971 # Increase local MTU
1192 mtu "${ns_a}" veth_A-R2 1500 972 mtu "${ns_a}" veth_A-R2 1500
1193 mtu "${ns_r2}" veth_R2-A 1500 973 mtu "${ns_r2}" veth_R2-A 1500
1194 pmtu_2="$(route_get_dst_pmtu_from_exc 974 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1195 check_pmtu_value "1500" "${pmtu_2}" " 975 check_pmtu_value "1500" "${pmtu_2}" "increasing local MTU" || return 1
1196 976
1197 # Get new exception 977 # Get new exception
1198 run_cmd ${ns_a} ${ping} -q -M want -i 978 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1400 ${dst2}
1199 pmtu_2="$(route_get_dst_pmtu_from_exc 979 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1200 check_pmtu_value "lock 552" "${pmtu_2 980 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1201 } 981 }
1202 982
1203 test_pmtu_ipv4_exception() { 983 test_pmtu_ipv4_exception() {
1204 test_pmtu_ipvX 4 984 test_pmtu_ipvX 4
1205 } 985 }
1206 986
1207 test_pmtu_ipv6_exception() { 987 test_pmtu_ipv6_exception() {
1208 test_pmtu_ipvX 6 988 test_pmtu_ipvX 6
1209 } 989 }
1210 990
1211 test_pmtu_ipv4_dscp_icmp_exception() { <<
1212 rt_table=100 <<
1213 <<
1214 setup namespaces policy_routing || re <<
1215 trace "${ns_a}" veth_A-R1 "${ns_r <<
1216 "${ns_r1}" veth_R1-B "${ns_b <<
1217 "${ns_a}" veth_A-R2 "${ns_r <<
1218 "${ns_r2}" veth_R2-B "${ns_b <<
1219 <<
1220 # Set up initial MTU values <<
1221 mtu "${ns_a}" veth_A-R1 2000 <<
1222 mtu "${ns_r1}" veth_R1-A 2000 <<
1223 mtu "${ns_r1}" veth_R1-B 1400 <<
1224 mtu "${ns_b}" veth_B-R1 1400 <<
1225 <<
1226 mtu "${ns_a}" veth_A-R2 2000 <<
1227 mtu "${ns_r2}" veth_R2-A 2000 <<
1228 mtu "${ns_r2}" veth_R2-B 1500 <<
1229 mtu "${ns_b}" veth_B-R2 1500 <<
1230 <<
1231 len=$((2000 - 20 - 8)) # Fills MTU of <<
1232 <<
1233 dst1="${prefix4}.${b_r1}.1" <<
1234 dst2="${prefix4}.${b_r2}.1" <<
1235 <<
1236 # Create route exceptions <<
1237 dsfield=${policy_mark} # No ECN bit s <<
1238 run_cmd "${ns_a}" ping -q -M want -Q <<
1239 <<
1240 dsfield=$(printf "%#x" $((policy_mark <<
1241 run_cmd "${ns_a}" ping -q -M want -Q <<
1242 <<
1243 # Check that exceptions have been cre <<
1244 pmtu_1="$(route_get_dst_pmtu_from_exc <<
1245 check_pmtu_value "1400" "${pmtu_1}" " <<
1246 <<
1247 pmtu_2="$(route_get_dst_pmtu_from_exc <<
1248 check_pmtu_value "1500" "${pmtu_2}" " <<
1249 } <<
1250 <<
1251 test_pmtu_ipv4_dscp_udp_exception() { <<
1252 rt_table=100 <<
1253 <<
1254 if ! which socat > /dev/null 2>&1; th <<
1255 echo "'socat' command not fou <<
1256 return $ksft_skip <<
1257 fi <<
1258 <<
1259 setup namespaces policy_routing || re <<
1260 trace "${ns_a}" veth_A-R1 "${ns_r <<
1261 "${ns_r1}" veth_R1-B "${ns_b <<
1262 "${ns_a}" veth_A-R2 "${ns_r <<
1263 "${ns_r2}" veth_R2-B "${ns_b <<
1264 <<
1265 # Set up initial MTU values <<
1266 mtu "${ns_a}" veth_A-R1 2000 <<
1267 mtu "${ns_r1}" veth_R1-A 2000 <<
1268 mtu "${ns_r1}" veth_R1-B 1400 <<
1269 mtu "${ns_b}" veth_B-R1 1400 <<
1270 <<
1271 mtu "${ns_a}" veth_A-R2 2000 <<
1272 mtu "${ns_r2}" veth_R2-A 2000 <<
1273 mtu "${ns_r2}" veth_R2-B 1500 <<
1274 mtu "${ns_b}" veth_B-R2 1500 <<
1275 <<
1276 len=$((2000 - 20 - 8)) # Fills MTU of <<
1277 <<
1278 dst1="${prefix4}.${b_r1}.1" <<
1279 dst2="${prefix4}.${b_r2}.1" <<
1280 <<
1281 # Create route exceptions <<
1282 run_cmd_bg "${ns_b}" socat UDP-LISTEN <<
1283 socat_pids="${socat_pids} $!" <<
1284 <<
1285 dsfield=${policy_mark} # No ECN bit s <<
1286 run_cmd "${ns_a}" socat OPEN:/dev/zer <<
1287 UDP:"${dst1}":50000,tos="${ds <<
1288 <<
1289 dsfield=$(printf "%#x" $((policy_mark <<
1290 run_cmd "${ns_a}" socat OPEN:/dev/zer <<
1291 UDP:"${dst2}":50000,tos="${ds <<
1292 <<
1293 # Check that exceptions have been cre <<
1294 pmtu_1="$(route_get_dst_pmtu_from_exc <<
1295 check_pmtu_value "1400" "${pmtu_1}" " <<
1296 pmtu_2="$(route_get_dst_pmtu_from_exc <<
1297 check_pmtu_value "1500" "${pmtu_2}" " <<
1298 } <<
1299 <<
1300 test_pmtu_ipvX_over_vxlanY_or_geneveY_excepti 991 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception() {
1301 type=${1} 992 type=${1}
1302 family=${2} 993 family=${2}
1303 outer_family=${3} 994 outer_family=${3}
1304 ll_mtu=4000 995 ll_mtu=4000
1305 996
1306 if [ ${outer_family} -eq 4 ]; then 997 if [ ${outer_family} -eq 4 ]; then
1307 setup namespaces routing ${ty 998 setup namespaces routing ${type}4 || return $ksft_skip
1308 # IPv4 h 999 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1309 exp_mtu=$((${ll_mtu} - 20 1000 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1310 else 1001 else
1311 setup namespaces routing ${ty 1002 setup namespaces routing ${type}6 || return $ksft_skip
1312 # IPv6 h 1003 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1313 exp_mtu=$((${ll_mtu} - 40 1004 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1314 fi 1005 fi
1315 1006
1316 trace "${ns_a}" ${type}_a "${ns_b} 1007 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1317 "${ns_a}" veth_A-R1 "${ns_r1 1008 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1318 "${ns_b}" veth_B-R1 "${ns_r1 1009 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1319 1010
1320 if [ ${family} -eq 4 ]; then 1011 if [ ${family} -eq 4 ]; then
1321 ping=ping 1012 ping=ping
1322 dst=${tunnel4_b_addr} 1013 dst=${tunnel4_b_addr}
1323 else 1014 else
1324 ping=${ping6} 1015 ping=${ping6}
1325 dst=${tunnel6_b_addr} 1016 dst=${tunnel6_b_addr}
1326 fi 1017 fi
1327 1018
1328 # Create route exception by exceeding 1019 # Create route exception by exceeding link layer MTU
1329 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1020 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1330 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1021 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1331 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1022 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1332 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1023 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1333 1024
1334 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1025 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1335 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1026 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1336 run_cmd ${ns_a} ${ping} -q -M want -i 1027 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1337 1028
1338 # Check that exception was created 1029 # Check that exception was created
1339 pmtu="$(route_get_dst_pmtu_from_excep 1030 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1340 check_pmtu_value ${exp_mtu} "${pmtu}" 1031 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${type} interface"
1341 } 1032 }
1342 1033
1343 test_pmtu_ipv4_vxlan4_exception() { 1034 test_pmtu_ipv4_vxlan4_exception() {
1344 test_pmtu_ipvX_over_vxlanY_or_geneveY 1035 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 4
1345 } 1036 }
1346 1037
1347 test_pmtu_ipv6_vxlan4_exception() { 1038 test_pmtu_ipv6_vxlan4_exception() {
1348 test_pmtu_ipvX_over_vxlanY_or_geneveY 1039 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 4
1349 } 1040 }
1350 1041
1351 test_pmtu_ipv4_geneve4_exception() { 1042 test_pmtu_ipv4_geneve4_exception() {
1352 test_pmtu_ipvX_over_vxlanY_or_geneveY 1043 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 4
1353 } 1044 }
1354 1045
1355 test_pmtu_ipv6_geneve4_exception() { 1046 test_pmtu_ipv6_geneve4_exception() {
1356 test_pmtu_ipvX_over_vxlanY_or_geneveY 1047 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 4
1357 } 1048 }
1358 1049
1359 test_pmtu_ipv4_vxlan6_exception() { 1050 test_pmtu_ipv4_vxlan6_exception() {
1360 test_pmtu_ipvX_over_vxlanY_or_geneveY 1051 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 6
1361 } 1052 }
1362 1053
1363 test_pmtu_ipv6_vxlan6_exception() { 1054 test_pmtu_ipv6_vxlan6_exception() {
1364 test_pmtu_ipvX_over_vxlanY_or_geneveY 1055 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 6
1365 } 1056 }
1366 1057
1367 test_pmtu_ipv4_geneve6_exception() { 1058 test_pmtu_ipv4_geneve6_exception() {
1368 test_pmtu_ipvX_over_vxlanY_or_geneveY 1059 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 6
1369 } 1060 }
1370 1061
1371 test_pmtu_ipv6_geneve6_exception() { 1062 test_pmtu_ipv6_geneve6_exception() {
1372 test_pmtu_ipvX_over_vxlanY_or_geneveY 1063 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 6
1373 } 1064 }
1374 1065
1375 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY 1066 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() {
1376 type=${1} 1067 type=${1}
1377 family=${2} 1068 family=${2}
1378 outer_family=${3} 1069 outer_family=${3}
1379 ll_mtu=4000 1070 ll_mtu=4000
1380 1071
1381 if [ ${outer_family} -eq 4 ]; then 1072 if [ ${outer_family} -eq 4 ]; then
1382 setup namespaces routing brid 1073 setup namespaces routing bridge bridged_${type}4 || return $ksft_skip
1383 # IPv4 h 1074 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1384 exp_mtu=$((${ll_mtu} - 20 1075 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1385 else 1076 else
1386 setup namespaces routing brid 1077 setup namespaces routing bridge bridged_${type}6 || return $ksft_skip
1387 # IPv6 h 1078 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1388 exp_mtu=$((${ll_mtu} - 40 1079 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1389 fi 1080 fi
1390 1081
1391 trace "${ns_a}" ${type}_a "${ns_b} 1082 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1392 "${ns_a}" veth_A-R1 "${ns_r1 1083 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1393 "${ns_b}" veth_B-R1 "${ns_r1 1084 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1394 "${ns_a}" br0 "${ns_a} 1085 "${ns_a}" br0 "${ns_a}" veth-A-C \
1395 "${ns_c}" veth_C-A 1086 "${ns_c}" veth_C-A
1396 1087
1397 if [ ${family} -eq 4 ]; then 1088 if [ ${family} -eq 4 ]; then
1398 ping=ping 1089 ping=ping
1399 dst=${tunnel4_b_addr} 1090 dst=${tunnel4_b_addr}
1400 else 1091 else
1401 ping=${ping6} 1092 ping=${ping6}
1402 dst=${tunnel6_b_addr} 1093 dst=${tunnel6_b_addr}
1403 fi 1094 fi
1404 1095
1405 # Create route exception by exceeding 1096 # Create route exception by exceeding link layer MTU
1406 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1097 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1407 mtu "${ns_a}" br0 $((${ll_mtu} 1098 mtu "${ns_a}" br0 $((${ll_mtu} + 1000))
1408 mtu "${ns_a}" veth_A-C $((${ll_mtu} 1099 mtu "${ns_a}" veth_A-C $((${ll_mtu} + 1000))
1409 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1100 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1410 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1101 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1411 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1102 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1412 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1103 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1413 1104
1414 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1105 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1415 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1106 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1416 1107
1417 run_cmd ${ns_c} ${ping} -q -M want -i 1108 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 10 -s $((${ll_mtu} + 500)) ${dst} || return 1
1418 run_cmd ${ns_a} ${ping} -q -M want -i 1109 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst} || return 1
1419 1110
1420 # Check that exceptions were created 1111 # Check that exceptions were created
1421 pmtu="$(route_get_dst_pmtu_from_excep 1112 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1422 check_pmtu_value ${exp_mtu} "${pmtu}" 1113 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on bridged ${type} interface"
1423 pmtu="$(route_get_dst_pmtu_from_excep 1114 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1424 check_pmtu_value ${exp_mtu} "${pmtu}" 1115 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on locally bridged ${type} interface"
1425 <<
1426 tmpoutfile=$(mktemp) <<
1427 <<
1428 # Flush Exceptions, retry with TCP <<
1429 run_cmd ${ns_a} ip route flush cached <<
1430 run_cmd ${ns_b} ip route flush cached <<
1431 run_cmd ${ns_c} ip route flush cached <<
1432 <<
1433 for target in "${ns_a}" "${ns_c}" ; d <<
1434 if [ ${family} -eq 4 ]; then <<
1435 TCPDST=TCP:${dst}:500 <<
1436 else <<
1437 TCPDST="TCP:[${dst}]: <<
1438 fi <<
1439 ${ns_b} socat -T 3 -u -6 TCP- <<
1440 local socat_pid=$! <<
1441 <<
1442 wait_local_port_listen ${NS_B <<
1443 <<
1444 dd if=/dev/zero status=none b <<
1445 <<
1446 wait ${socat_pid} <<
1447 size=$(du -sb $tmpoutfile) <<
1448 size=${size%%/tmp/*} <<
1449 <<
1450 [ $size -ne 1048576 ] && err <<
1451 done <<
1452 <<
1453 rm -f "$tmpoutfile" <<
1454 <<
1455 # Check that exceptions were created <<
1456 pmtu="$(route_get_dst_pmtu_from_excep <<
1457 check_pmtu_value ${exp_mtu} "${pmtu}" <<
1458 pmtu="$(route_get_dst_pmtu_from_excep <<
1459 check_pmtu_value ${exp_mtu} "${pmtu}" <<
1460 } 1116 }
1461 1117
1462 test_pmtu_ipv4_br_vxlan4_exception() { 1118 test_pmtu_ipv4_br_vxlan4_exception() {
1463 test_pmtu_ipvX_over_bridged_vxlanY_or 1119 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 4
1464 } 1120 }
1465 1121
1466 test_pmtu_ipv6_br_vxlan4_exception() { 1122 test_pmtu_ipv6_br_vxlan4_exception() {
1467 test_pmtu_ipvX_over_bridged_vxlanY_or 1123 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 4
1468 } 1124 }
1469 1125
1470 test_pmtu_ipv4_br_geneve4_exception() { 1126 test_pmtu_ipv4_br_geneve4_exception() {
1471 test_pmtu_ipvX_over_bridged_vxlanY_or 1127 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 4
1472 } 1128 }
1473 1129
1474 test_pmtu_ipv6_br_geneve4_exception() { 1130 test_pmtu_ipv6_br_geneve4_exception() {
1475 test_pmtu_ipvX_over_bridged_vxlanY_or 1131 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 4
1476 } 1132 }
1477 1133
1478 test_pmtu_ipv4_br_vxlan6_exception() { 1134 test_pmtu_ipv4_br_vxlan6_exception() {
1479 test_pmtu_ipvX_over_bridged_vxlanY_or 1135 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 6
1480 } 1136 }
1481 1137
1482 test_pmtu_ipv6_br_vxlan6_exception() { 1138 test_pmtu_ipv6_br_vxlan6_exception() {
1483 test_pmtu_ipvX_over_bridged_vxlanY_or 1139 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 6
1484 } 1140 }
1485 1141
1486 test_pmtu_ipv4_br_geneve6_exception() { 1142 test_pmtu_ipv4_br_geneve6_exception() {
1487 test_pmtu_ipvX_over_bridged_vxlanY_or 1143 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 6
1488 } 1144 }
1489 1145
1490 test_pmtu_ipv6_br_geneve6_exception() { 1146 test_pmtu_ipv6_br_geneve6_exception() {
1491 test_pmtu_ipvX_over_bridged_vxlanY_or 1147 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 6
1492 } 1148 }
1493 1149
1494 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exc 1150 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception() {
1495 type=${1} 1151 type=${1}
1496 family=${2} 1152 family=${2}
1497 outer_family=${3} 1153 outer_family=${3}
1498 ll_mtu=4000 1154 ll_mtu=4000
1499 1155
1500 if [ "${type}" = "vxlan" ]; then <<
1501 tun_a="vxlan_sys_4789" <<
1502 elif [ "${type}" = "geneve" ]; then <<
1503 tun_a="genev_sys_6081" <<
1504 fi <<
1505 <<
1506 if [ ${outer_family} -eq 4 ]; then 1156 if [ ${outer_family} -eq 4 ]; then
1507 setup namespaces routing ovs_ 1157 setup namespaces routing ovs_bridge ovs_${type}4 || return $ksft_skip
1508 # IPv4 h 1158 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1509 exp_mtu=$((${ll_mtu} - 20 1159 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1510 else 1160 else
1511 setup namespaces routing ovs_ 1161 setup namespaces routing ovs_bridge ovs_${type}6 || return $ksft_skip
1512 # IPv6 h 1162 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1513 exp_mtu=$((${ll_mtu} - 40 1163 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1514 fi 1164 fi
1515 1165
1516 trace "" ${type}_a "${ns_b} !! 1166 if [ "${type}" = "vxlan" ]; then
1517 "" veth_A-R1 "${ns_r1 !! 1167 tun_a="vxlan_sys_4789"
1518 "${ns_b}" veth_B-R1 "${ns_r1 !! 1168 elif [ "${type}" = "geneve" ]; then
1519 "" ovs_br0 "" !! 1169 tun_a="genev_sys_6081"
1520 "${ns_c}" veth_C-A "" !! 1170 fi
>> 1171
>> 1172 trace "" "${tun_a}" "${ns_b}" ${type}_b \
>> 1173 "" veth_A-R1 "${ns_r1}" veth_R1-A \
>> 1174 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
>> 1175 "" ovs_br0 "" veth-A-C \
>> 1176 "${ns_c}" veth_C-A
1521 1177
1522 if [ ${family} -eq 4 ]; then 1178 if [ ${family} -eq 4 ]; then
1523 ping=ping 1179 ping=ping
1524 dst=${tunnel4_b_addr} 1180 dst=${tunnel4_b_addr}
1525 else 1181 else
1526 ping=${ping6} 1182 ping=${ping6}
1527 dst=${tunnel6_b_addr} 1183 dst=${tunnel6_b_addr}
1528 fi 1184 fi
1529 1185
1530 # Create route exception by exceeding 1186 # Create route exception by exceeding link layer MTU
1531 mtu "" veth_A-R1 $((${ll_mtu} 1187 mtu "" veth_A-R1 $((${ll_mtu} + 1000))
1532 mtu "" ovs_br0 $((${ll_mtu} 1188 mtu "" ovs_br0 $((${ll_mtu} + 1000))
1533 mtu "" veth_A-C $((${ll_mtu} 1189 mtu "" veth_A-C $((${ll_mtu} + 1000))
1534 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1190 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1535 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1191 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1536 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1192 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1537 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1193 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1538 1194
1539 mtu "" ${tun_a} $((${ll_mtu} !! 1195 mtu "" ${tun_a} $((${ll_mtu} + 1000))
1540 mtu "" ${type}_a $(($ !! 1196 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1541 mtu "${ns_b}" ${type}_b $((${ll_mtu} <<
1542 1197
1543 run_cmd ${ns_c} ${ping} -q -M want -i 1198 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 20 -s $((${ll_mtu} + 500)) ${dst} || return 1
1544 1199
1545 # Check that exceptions were created 1200 # Check that exceptions were created
1546 pmtu="$(route_get_dst_pmtu_from_excep 1201 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1547 check_pmtu_value ${exp_mtu} "${pmtu}" 1202 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on Open vSwitch ${type} interface"
1548 } 1203 }
1549 1204
1550 test_pmtu_ipv4_ovs_vxlan4_exception() { 1205 test_pmtu_ipv4_ovs_vxlan4_exception() {
1551 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1206 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 4
1552 } 1207 }
1553 1208
1554 test_pmtu_ipv6_ovs_vxlan4_exception() { 1209 test_pmtu_ipv6_ovs_vxlan4_exception() {
1555 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1210 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 4
1556 } 1211 }
1557 1212
1558 test_pmtu_ipv4_ovs_geneve4_exception() { 1213 test_pmtu_ipv4_ovs_geneve4_exception() {
1559 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1214 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 4
1560 } 1215 }
1561 1216
1562 test_pmtu_ipv6_ovs_geneve4_exception() { 1217 test_pmtu_ipv6_ovs_geneve4_exception() {
1563 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1218 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 4
1564 } 1219 }
1565 1220
1566 test_pmtu_ipv4_ovs_vxlan6_exception() { 1221 test_pmtu_ipv4_ovs_vxlan6_exception() {
1567 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1222 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 6
1568 } 1223 }
1569 1224
1570 test_pmtu_ipv6_ovs_vxlan6_exception() { 1225 test_pmtu_ipv6_ovs_vxlan6_exception() {
1571 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1226 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 6
1572 } 1227 }
1573 1228
1574 test_pmtu_ipv4_ovs_geneve6_exception() { 1229 test_pmtu_ipv4_ovs_geneve6_exception() {
1575 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1230 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 6
1576 } 1231 }
1577 1232
1578 test_pmtu_ipv6_ovs_geneve6_exception() { 1233 test_pmtu_ipv6_ovs_geneve6_exception() {
1579 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1234 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 6
1580 } 1235 }
1581 1236
1582 test_pmtu_ipvX_over_fouY_or_gueY() { 1237 test_pmtu_ipvX_over_fouY_or_gueY() {
1583 inner_family=${1} 1238 inner_family=${1}
1584 outer_family=${2} 1239 outer_family=${2}
1585 encap=${3} 1240 encap=${3}
1586 ll_mtu=4000 1241 ll_mtu=4000
1587 1242
1588 setup namespaces routing ${encap}${ou 1243 setup namespaces routing ${encap}${outer_family}${inner_family} || return $ksft_skip
1589 trace "${ns_a}" ${encap}_a "${ns_b} 1244 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
1590 "${ns_a}" veth_A-R1 "${ns_r1 1245 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1591 "${ns_b}" veth_B-R1 "${ns_r1 1246 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1592 1247
1593 if [ ${inner_family} -eq 4 ]; then 1248 if [ ${inner_family} -eq 4 ]; then
1594 ping=ping 1249 ping=ping
1595 dst=${tunnel4_b_addr} 1250 dst=${tunnel4_b_addr}
1596 else 1251 else
1597 ping=${ping6} 1252 ping=${ping6}
1598 dst=${tunnel6_b_addr} 1253 dst=${tunnel6_b_addr}
1599 fi 1254 fi
1600 1255
1601 if [ "${encap}" = "gue" ]; then 1256 if [ "${encap}" = "gue" ]; then
1602 encap_overhead=4 1257 encap_overhead=4
1603 else 1258 else
1604 encap_overhead=0 1259 encap_overhead=0
1605 fi 1260 fi
1606 1261
1607 if [ ${outer_family} -eq 4 ]; then 1262 if [ ${outer_family} -eq 4 ]; then
1608 # IPv4 h 1263 # IPv4 header UDP header
1609 exp_mtu=$((${ll_mtu} - 20 1264 exp_mtu=$((${ll_mtu} - 20 - 8 - ${encap_overhead}))
1610 else 1265 else
1611 # IPv6 h 1266 # IPv6 header Option 4 UDP header
1612 exp_mtu=$((${ll_mtu} - 40 1267 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - ${encap_overhead}))
1613 fi 1268 fi
1614 1269
1615 # Create route exception by exceeding 1270 # Create route exception by exceeding link layer MTU
1616 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1271 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1617 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1272 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1618 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1273 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1619 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1274 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1620 1275
1621 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 1276 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
1622 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 1277 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
1623 run_cmd ${ns_a} ${ping} -q -M want -i 1278 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1624 1279
1625 # Check that exception was created 1280 # Check that exception was created
1626 pmtu="$(route_get_dst_pmtu_from_excep 1281 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1627 check_pmtu_value ${exp_mtu} "${pmtu}" 1282 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${encap} interface"
1628 } 1283 }
1629 1284
1630 test_pmtu_ipv4_fou4_exception() { 1285 test_pmtu_ipv4_fou4_exception() {
1631 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1286 test_pmtu_ipvX_over_fouY_or_gueY 4 4 fou
1632 } 1287 }
1633 1288
1634 test_pmtu_ipv6_fou4_exception() { 1289 test_pmtu_ipv6_fou4_exception() {
1635 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1290 test_pmtu_ipvX_over_fouY_or_gueY 6 4 fou
1636 } 1291 }
1637 1292
1638 test_pmtu_ipv4_fou6_exception() { 1293 test_pmtu_ipv4_fou6_exception() {
1639 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1294 test_pmtu_ipvX_over_fouY_or_gueY 4 6 fou
1640 } 1295 }
1641 1296
1642 test_pmtu_ipv6_fou6_exception() { 1297 test_pmtu_ipv6_fou6_exception() {
1643 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1298 test_pmtu_ipvX_over_fouY_or_gueY 6 6 fou
1644 } 1299 }
1645 1300
1646 test_pmtu_ipv4_gue4_exception() { 1301 test_pmtu_ipv4_gue4_exception() {
1647 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1302 test_pmtu_ipvX_over_fouY_or_gueY 4 4 gue
1648 } 1303 }
1649 1304
1650 test_pmtu_ipv6_gue4_exception() { 1305 test_pmtu_ipv6_gue4_exception() {
1651 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1306 test_pmtu_ipvX_over_fouY_or_gueY 6 4 gue
1652 } 1307 }
1653 1308
1654 test_pmtu_ipv4_gue6_exception() { 1309 test_pmtu_ipv4_gue6_exception() {
1655 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1310 test_pmtu_ipvX_over_fouY_or_gueY 4 6 gue
1656 } 1311 }
1657 1312
1658 test_pmtu_ipv6_gue6_exception() { 1313 test_pmtu_ipv6_gue6_exception() {
1659 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1314 test_pmtu_ipvX_over_fouY_or_gueY 6 6 gue
1660 } 1315 }
1661 1316
1662 test_pmtu_ipvX_over_ipvY_exception() { 1317 test_pmtu_ipvX_over_ipvY_exception() {
1663 inner=${1} 1318 inner=${1}
1664 outer=${2} 1319 outer=${2}
1665 ll_mtu=4000 1320 ll_mtu=4000
1666 1321
1667 setup namespaces routing ip${inner}ip 1322 setup namespaces routing ip${inner}ip${outer} || return $ksft_skip
1668 1323
1669 trace "${ns_a}" ip_a "${ns_b} 1324 trace "${ns_a}" ip_a "${ns_b}" ip_b \
1670 "${ns_a}" veth_A-R1 "${ns_r1 1325 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1671 "${ns_b}" veth_B-R1 "${ns_r1 1326 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1672 1327
1673 if [ ${inner} -eq 4 ]; then 1328 if [ ${inner} -eq 4 ]; then
1674 ping=ping 1329 ping=ping
1675 dst=${tunnel4_b_addr} 1330 dst=${tunnel4_b_addr}
1676 else 1331 else
1677 ping=${ping6} 1332 ping=${ping6}
1678 dst=${tunnel6_b_addr} 1333 dst=${tunnel6_b_addr}
1679 fi 1334 fi
1680 1335
1681 if [ ${outer} -eq 4 ]; then 1336 if [ ${outer} -eq 4 ]; then
1682 # IPv4 h 1337 # IPv4 header
1683 exp_mtu=$((${ll_mtu} - 20)) 1338 exp_mtu=$((${ll_mtu} - 20))
1684 else 1339 else
1685 # IPv6 h 1340 # IPv6 header Option 4
1686 exp_mtu=$((${ll_mtu} - 40 1341 exp_mtu=$((${ll_mtu} - 40 - 8))
1687 fi 1342 fi
1688 1343
1689 # Create route exception by exceeding 1344 # Create route exception by exceeding link layer MTU
1690 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1345 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1691 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1346 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1692 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1347 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1693 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1348 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1694 1349
1695 mtu "${ns_a}" ip_a $((${ll_mtu} + 100 1350 mtu "${ns_a}" ip_a $((${ll_mtu} + 1000)) || return
1696 mtu "${ns_b}" ip_b $((${ll_mtu} + 100 1351 mtu "${ns_b}" ip_b $((${ll_mtu} + 1000)) || return
1697 run_cmd ${ns_a} ${ping} -q -M want -i 1352 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1698 1353
1699 # Check that exception was created 1354 # Check that exception was created
1700 pmtu="$(route_get_dst_pmtu_from_excep 1355 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1701 check_pmtu_value ${exp_mtu} "${pmtu}" 1356 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ip${inner}ip${outer} interface"
1702 } 1357 }
1703 1358
1704 test_pmtu_ipv4_ipv4_exception() { 1359 test_pmtu_ipv4_ipv4_exception() {
1705 test_pmtu_ipvX_over_ipvY_exception 4 1360 test_pmtu_ipvX_over_ipvY_exception 4 4
1706 } 1361 }
1707 1362
1708 test_pmtu_ipv6_ipv4_exception() { 1363 test_pmtu_ipv6_ipv4_exception() {
1709 test_pmtu_ipvX_over_ipvY_exception 6 1364 test_pmtu_ipvX_over_ipvY_exception 6 4
1710 } 1365 }
1711 1366
1712 test_pmtu_ipv4_ipv6_exception() { 1367 test_pmtu_ipv4_ipv6_exception() {
1713 test_pmtu_ipvX_over_ipvY_exception 4 1368 test_pmtu_ipvX_over_ipvY_exception 4 6
1714 } 1369 }
1715 1370
1716 test_pmtu_ipv6_ipv6_exception() { 1371 test_pmtu_ipv6_ipv6_exception() {
1717 test_pmtu_ipvX_over_ipvY_exception 6 1372 test_pmtu_ipvX_over_ipvY_exception 6 6
1718 } 1373 }
1719 1374
1720 test_pmtu_vti4_exception() { 1375 test_pmtu_vti4_exception() {
1721 setup namespaces veth vti4 xfrm4 || r 1376 setup namespaces veth vti4 xfrm4 || return $ksft_skip
1722 trace "${ns_a}" veth_a "${ns_b}" v 1377 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1723 "${ns_a}" vti4_a "${ns_b}" v 1378 "${ns_a}" vti4_a "${ns_b}" vti4_b
1724 1379
1725 veth_mtu=1500 1380 veth_mtu=1500
1726 vti_mtu=$((veth_mtu - 20)) 1381 vti_mtu=$((veth_mtu - 20))
1727 1382
1728 # SPI 1383 # SPI SN IV ICV pad length next header
1729 esp_payload_rfc4106=$((vti_mtu - 4 1384 esp_payload_rfc4106=$((vti_mtu - 4 - 4 - 8 - 16 - 1 - 1))
1730 ping_payload=$((esp_payload_rfc4106 - 1385 ping_payload=$((esp_payload_rfc4106 - 28))
1731 1386
1732 mtu "${ns_a}" veth_a ${veth_mtu} 1387 mtu "${ns_a}" veth_a ${veth_mtu}
1733 mtu "${ns_b}" veth_b ${veth_mtu} 1388 mtu "${ns_b}" veth_b ${veth_mtu}
1734 mtu "${ns_a}" vti4_a ${vti_mtu} 1389 mtu "${ns_a}" vti4_a ${vti_mtu}
1735 mtu "${ns_b}" vti4_b ${vti_mtu} 1390 mtu "${ns_b}" vti4_b ${vti_mtu}
1736 1391
1737 # Send DF packet without exceeding li 1392 # Send DF packet without exceeding link layer MTU, check that no
1738 # exception is created 1393 # exception is created
1739 run_cmd ${ns_a} ping -q -M want -i 0. 1394 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1740 pmtu="$(route_get_dst_pmtu_from_excep 1395 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1741 check_pmtu_value "" "${pmtu}" "sendin 1396 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1742 1397
1743 # Now exceed link layer MTU by one by 1398 # Now exceed link layer MTU by one byte, check that exception is created
1744 # with the right PMTU value 1399 # with the right PMTU value
1745 run_cmd ${ns_a} ping -q -M want -i 0. 1400 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload + 1)) ${tunnel4_b_addr}
1746 pmtu="$(route_get_dst_pmtu_from_excep 1401 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1747 check_pmtu_value "${esp_payload_rfc41 1402 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1748 } 1403 }
1749 1404
1750 test_pmtu_vti6_exception() { 1405 test_pmtu_vti6_exception() {
1751 setup namespaces veth vti6 xfrm6 || r 1406 setup namespaces veth vti6 xfrm6 || return $ksft_skip
1752 trace "${ns_a}" veth_a "${ns_b}" v 1407 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1753 "${ns_a}" vti6_a "${ns_b}" v 1408 "${ns_a}" vti6_a "${ns_b}" vti6_b
1754 fail=0 1409 fail=0
1755 1410
1756 # Create route exception by exceeding 1411 # Create route exception by exceeding link layer MTU
1757 mtu "${ns_a}" veth_a 4000 1412 mtu "${ns_a}" veth_a 4000
1758 mtu "${ns_b}" veth_b 4000 1413 mtu "${ns_b}" veth_b 4000
1759 mtu "${ns_a}" vti6_a 5000 1414 mtu "${ns_a}" vti6_a 5000
1760 mtu "${ns_b}" vti6_b 5000 1415 mtu "${ns_b}" vti6_b 5000
1761 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1416 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1762 1417
1763 # Check that exception was created 1418 # Check that exception was created
1764 pmtu="$(route_get_dst_pmtu_from_excep 1419 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1765 check_pmtu_value any "${pmtu}" "creat 1420 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1766 1421
1767 # Decrease tunnel MTU, check for PMTU 1422 # Decrease tunnel MTU, check for PMTU decrease in route exception
1768 mtu "${ns_a}" vti6_a 3000 1423 mtu "${ns_a}" vti6_a 3000
1769 pmtu="$(route_get_dst_pmtu_from_excep 1424 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1770 check_pmtu_value "3000" "${pmtu}" "de 1425 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1771 1426
1772 # Increase tunnel MTU, check for PMTU 1427 # Increase tunnel MTU, check for PMTU increase in route exception
1773 mtu "${ns_a}" vti6_a 9000 1428 mtu "${ns_a}" vti6_a 9000
1774 pmtu="$(route_get_dst_pmtu_from_excep 1429 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1775 check_pmtu_value "9000" "${pmtu}" "in 1430 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1776 1431
1777 return ${fail} 1432 return ${fail}
1778 } 1433 }
1779 1434
1780 test_pmtu_vti4_udp_exception() { <<
1781 setup namespaces veth vti4 xfrm4udp | <<
1782 trace "${ns_a}" veth_a "${ns_b}" v <<
1783 "${ns_a}" vti4_a "${ns_b}" v <<
1784 <<
1785 veth_mtu=1500 <<
1786 vti_mtu=$((veth_mtu - 20)) <<
1787 <<
1788 # UDP <<
1789 esp_payload_rfc4106=$((vti_mtu - 8 <<
1790 ping_payload=$((esp_payload_rfc4106 - <<
1791 <<
1792 mtu "${ns_a}" veth_a ${veth_mtu} <<
1793 mtu "${ns_b}" veth_b ${veth_mtu} <<
1794 mtu "${ns_a}" vti4_a ${vti_mtu} <<
1795 mtu "${ns_b}" vti4_b ${vti_mtu} <<
1796 <<
1797 # Send DF packet without exceeding li <<
1798 # exception is created <<
1799 run_cmd ${ns_a} ping -q -M want -i 0. <<
1800 pmtu="$(route_get_dst_pmtu_from_excep <<
1801 check_pmtu_value "" "${pmtu}" "sendin <<
1802 <<
1803 # Now exceed link layer MTU by one by <<
1804 # with the right PMTU value <<
1805 run_cmd ${ns_a} ping -q -M want -i 0. <<
1806 pmtu="$(route_get_dst_pmtu_from_excep <<
1807 check_pmtu_value "${esp_payload_rfc41 <<
1808 } <<
1809 <<
1810 test_pmtu_vti6_udp_exception() { <<
1811 setup namespaces veth vti6 xfrm6udp | <<
1812 trace "${ns_a}" veth_a "${ns_b}" v <<
1813 "${ns_a}" vti6_a "${ns_b}" v <<
1814 fail=0 <<
1815 <<
1816 # Create route exception by exceeding <<
1817 mtu "${ns_a}" veth_a 4000 <<
1818 mtu "${ns_b}" veth_b 4000 <<
1819 mtu "${ns_a}" vti6_a 5000 <<
1820 mtu "${ns_b}" vti6_b 5000 <<
1821 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w <<
1822 <<
1823 # Check that exception was created <<
1824 pmtu="$(route_get_dst_pmtu_from_excep <<
1825 check_pmtu_value any "${pmtu}" "creat <<
1826 <<
1827 # Decrease tunnel MTU, check for PMTU <<
1828 mtu "${ns_a}" vti6_a 3000 <<
1829 pmtu="$(route_get_dst_pmtu_from_excep <<
1830 check_pmtu_value "3000" "${pmtu}" "de <<
1831 <<
1832 # Increase tunnel MTU, check for PMTU <<
1833 mtu "${ns_a}" vti6_a 9000 <<
1834 pmtu="$(route_get_dst_pmtu_from_excep <<
1835 check_pmtu_value "9000" "${pmtu}" "in <<
1836 <<
1837 return ${fail} <<
1838 } <<
1839 <<
1840 test_pmtu_vti4_udp_routed_exception() { <<
1841 setup namespaces routing vti4routed x <<
1842 trace "${ns_a}" veth_A-R1 "${ns_b} <<
1843 "${ns_a}" vti4_a "${ns_b} <<
1844 <<
1845 veth_mtu=1500 <<
1846 vti_mtu=$((veth_mtu - 20)) <<
1847 <<
1848 # UDP <<
1849 esp_payload_rfc4106=$((vti_mtu - 8 <<
1850 ping_payload=$((esp_payload_rfc4106 - <<
1851 <<
1852 mtu "${ns_a}" veth_A-R1 ${veth_mtu} <<
1853 mtu "${ns_r1}" veth_R1-A ${veth_mtu} <<
1854 mtu "${ns_b}" veth_B-R1 ${veth_mtu} <<
1855 mtu "${ns_r1}" veth_R1-B ${veth_mtu} <<
1856 <<
1857 mtu "${ns_a}" vti4_a ${vti_mtu} <<
1858 mtu "${ns_b}" vti4_b ${vti_mtu} <<
1859 <<
1860 # Send DF packet without exceeding li <<
1861 # exception is created <<
1862 run_cmd ${ns_a} ping -q -M want -i 0. <<
1863 pmtu="$(route_get_dst_pmtu_from_excep <<
1864 check_pmtu_value "" "${pmtu}" "sendin <<
1865 <<
1866 # Now decrease link layer MTU by 8 by <<
1867 # with the right PMTU value <<
1868 mtu "${ns_r1}" veth_R1-B $((veth_mtu <<
1869 run_cmd ${ns_a} ping -q -M want -i 0. <<
1870 pmtu="$(route_get_dst_pmtu_from_excep <<
1871 check_pmtu_value "$((esp_payload_rfc4 <<
1872 } <<
1873 <<
1874 test_pmtu_vti6_udp_routed_exception() { <<
1875 setup namespaces routing vti6routed x <<
1876 trace "${ns_a}" veth_A-R1 "${ns_b} <<
1877 "${ns_a}" vti6_a "${ns_b} <<
1878 <<
1879 veth_mtu=1500 <<
1880 vti_mtu=$((veth_mtu - 40)) <<
1881 <<
1882 # UDP <<
1883 esp_payload_rfc4106=$((vti_mtu - 8 <<
1884 ping_payload=$((esp_payload_rfc4106 - <<
1885 <<
1886 mtu "${ns_a}" veth_A-R1 ${veth_mtu} <<
1887 mtu "${ns_r1}" veth_R1-A ${veth_mtu} <<
1888 mtu "${ns_b}" veth_B-R1 ${veth_mtu} <<
1889 mtu "${ns_r1}" veth_R1-B ${veth_mtu} <<
1890 <<
1891 # mtu "${ns_a}" vti6_a ${vti_mtu} <<
1892 # mtu "${ns_b}" vti6_b ${vti_mtu} <<
1893 <<
1894 run_cmd ${ns_a} ${ping6} -q -M want - <<
1895 <<
1896 # Check that exception was not create <<
1897 pmtu="$(route_get_dst_pmtu_from_excep <<
1898 check_pmtu_value "" "${pmtu}" "sendin <<
1899 <<
1900 # Now decrease link layer MTU by 8 by <<
1901 # with the right PMTU value <<
1902 mtu "${ns_r1}" veth_R1-B $((veth_mtu <<
1903 run_cmd ${ns_a} ${ping6} -q -M want - <<
1904 pmtu="$(route_get_dst_pmtu_from_excep <<
1905 check_pmtu_value "$((esp_payload_rfc4 <<
1906 <<
1907 } <<
1908 <<
1909 test_pmtu_vti4_default_mtu() { 1435 test_pmtu_vti4_default_mtu() {
1910 setup namespaces veth vti4 || return 1436 setup namespaces veth vti4 || return $ksft_skip
1911 1437
1912 # Check that MTU of vti device is MTU 1438 # Check that MTU of vti device is MTU of veth minus IPv4 header length
1913 veth_mtu="$(link_get_mtu "${ns_a}" ve 1439 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1914 vti4_mtu="$(link_get_mtu "${ns_a}" vt 1440 vti4_mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1915 if [ $((veth_mtu - vti4_mtu)) -ne 20 1441 if [ $((veth_mtu - vti4_mtu)) -ne 20 ]; then
1916 err " vti MTU ${vti4_mtu} is 1442 err " vti MTU ${vti4_mtu} is not veth MTU ${veth_mtu} minus IPv4 header length"
1917 return 1 1443 return 1
1918 fi 1444 fi
1919 } 1445 }
1920 1446
1921 test_pmtu_vti6_default_mtu() { 1447 test_pmtu_vti6_default_mtu() {
1922 setup namespaces veth vti6 || return 1448 setup namespaces veth vti6 || return $ksft_skip
1923 1449
1924 # Check that MTU of vti device is MTU 1450 # Check that MTU of vti device is MTU of veth minus IPv6 header length
1925 veth_mtu="$(link_get_mtu "${ns_a}" ve 1451 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1926 vti6_mtu="$(link_get_mtu "${ns_a}" vt 1452 vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1927 if [ $((veth_mtu - vti6_mtu)) -ne 40 1453 if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then
1928 err " vti MTU ${vti6_mtu} is 1454 err " vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length"
1929 return 1 1455 return 1
1930 fi 1456 fi
1931 } 1457 }
1932 1458
1933 test_pmtu_vti4_link_add_mtu() { 1459 test_pmtu_vti4_link_add_mtu() {
1934 setup namespaces || return $ksft_skip 1460 setup namespaces || return $ksft_skip
1935 1461
1936 run_cmd ${ns_a} ip link add vti4_a ty 1462 run_cmd ${ns_a} ip link add vti4_a type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
1937 [ $? -ne 0 ] && err " vti not suppor 1463 [ $? -ne 0 ] && err " vti not supported" && return $ksft_skip
1938 run_cmd ${ns_a} ip link del vti4_a 1464 run_cmd ${ns_a} ip link del vti4_a
1939 1465
1940 fail=0 1466 fail=0
1941 1467
1942 min=68 1468 min=68
1943 max=$((65535 - 20)) 1469 max=$((65535 - 20))
1944 # Check invalid values first 1470 # Check invalid values first
1945 for v in $((min - 1)) $((max + 1)); d 1471 for v in $((min - 1)) $((max + 1)); do
1946 run_cmd ${ns_a} ip link add v 1472 run_cmd ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
1947 # This can fail, or MTU can b 1473 # This can fail, or MTU can be adjusted to a proper value
1948 [ $? -ne 0 ] && continue 1474 [ $? -ne 0 ] && continue
1949 mtu="$(link_get_mtu "${ns_a}" 1475 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1950 if [ ${mtu} -lt ${min} -o ${m 1476 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1951 err " vti tunnel cre 1477 err " vti tunnel created with invalid MTU ${mtu}"
1952 fail=1 1478 fail=1
1953 fi 1479 fi
1954 run_cmd ${ns_a} ip link del v 1480 run_cmd ${ns_a} ip link del vti4_a
1955 done 1481 done
1956 1482
1957 # Now check valid values 1483 # Now check valid values
1958 for v in ${min} 1300 ${max}; do 1484 for v in ${min} 1300 ${max}; do
1959 run_cmd ${ns_a} ip link add v 1485 run_cmd ${ns_a} ip link add vti4_a mtu ${v} type vti local ${veth4_a_addr} remote ${veth4_b_addr} key 10
1960 mtu="$(link_get_mtu "${ns_a}" 1486 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1961 run_cmd ${ns_a} ip link del v 1487 run_cmd ${ns_a} ip link del vti4_a
1962 if [ "${mtu}" != "${v}" ]; th 1488 if [ "${mtu}" != "${v}" ]; then
1963 err " vti MTU ${mtu} 1489 err " vti MTU ${mtu} doesn't match configured value ${v}"
1964 fail=1 1490 fail=1
1965 fi 1491 fi
1966 done 1492 done
1967 1493
1968 return ${fail} 1494 return ${fail}
1969 } 1495 }
1970 1496
1971 test_pmtu_vti6_link_add_mtu() { 1497 test_pmtu_vti6_link_add_mtu() {
1972 setup namespaces || return $ksft_skip 1498 setup namespaces || return $ksft_skip
1973 1499
1974 run_cmd ${ns_a} ip link add vti6_a ty 1500 run_cmd ${ns_a} ip link add vti6_a type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
1975 [ $? -ne 0 ] && err " vti6 not suppo 1501 [ $? -ne 0 ] && err " vti6 not supported" && return $ksft_skip
1976 run_cmd ${ns_a} ip link del vti6_a 1502 run_cmd ${ns_a} ip link del vti6_a
1977 1503
1978 fail=0 1504 fail=0
1979 1505
1980 min=68 # vti6 can ca 1506 min=68 # vti6 can carry IPv4 packets too
1981 max=$((65535 - 40)) 1507 max=$((65535 - 40))
1982 # Check invalid values first 1508 # Check invalid values first
1983 for v in $((min - 1)) $((max + 1)); d 1509 for v in $((min - 1)) $((max + 1)); do
1984 run_cmd ${ns_a} ip link add v 1510 run_cmd ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
1985 # This can fail, or MTU can b 1511 # This can fail, or MTU can be adjusted to a proper value
1986 [ $? -ne 0 ] && continue 1512 [ $? -ne 0 ] && continue
1987 mtu="$(link_get_mtu "${ns_a}" 1513 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1988 if [ ${mtu} -lt ${min} -o ${m 1514 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1989 err " vti6 tunnel cr 1515 err " vti6 tunnel created with invalid MTU ${v}"
1990 fail=1 1516 fail=1
1991 fi 1517 fi
1992 run_cmd ${ns_a} ip link del v 1518 run_cmd ${ns_a} ip link del vti6_a
1993 done 1519 done
1994 1520
1995 # Now check valid values 1521 # Now check valid values
1996 for v in 68 1280 1300 $((65535 - 40)) 1522 for v in 68 1280 1300 $((65535 - 40)); do
1997 run_cmd ${ns_a} ip link add v 1523 run_cmd ${ns_a} ip link add vti6_a mtu ${v} type vti6 local ${veth6_a_addr} remote ${veth6_b_addr} key 10
1998 mtu="$(link_get_mtu "${ns_a}" 1524 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1999 run_cmd ${ns_a} ip link del v 1525 run_cmd ${ns_a} ip link del vti6_a
2000 if [ "${mtu}" != "${v}" ]; th 1526 if [ "${mtu}" != "${v}" ]; then
2001 err " vti6 MTU ${mtu 1527 err " vti6 MTU ${mtu} doesn't match configured value ${v}"
2002 fail=1 1528 fail=1
2003 fi 1529 fi
2004 done 1530 done
2005 1531
2006 return ${fail} 1532 return ${fail}
2007 } 1533 }
2008 1534
2009 test_pmtu_vti6_link_change_mtu() { 1535 test_pmtu_vti6_link_change_mtu() {
2010 setup namespaces || return $ksft_skip 1536 setup namespaces || return $ksft_skip
2011 1537
2012 run_cmd ${ns_a} ip link add dummy0 mt 1538 run_cmd ${ns_a} ip link add dummy0 mtu 1500 type dummy
2013 [ $? -ne 0 ] && err " dummy not supp 1539 [ $? -ne 0 ] && err " dummy not supported" && return $ksft_skip
2014 run_cmd ${ns_a} ip link add dummy1 mt 1540 run_cmd ${ns_a} ip link add dummy1 mtu 3000 type dummy
2015 run_cmd ${ns_a} ip link set dummy0 up 1541 run_cmd ${ns_a} ip link set dummy0 up
2016 run_cmd ${ns_a} ip link set dummy1 up 1542 run_cmd ${ns_a} ip link set dummy1 up
2017 1543
2018 run_cmd ${ns_a} ip addr add ${dummy6_ 1544 run_cmd ${ns_a} ip addr add ${dummy6_0_prefix}1/${dummy6_mask} dev dummy0
2019 run_cmd ${ns_a} ip addr add ${dummy6_ 1545 run_cmd ${ns_a} ip addr add ${dummy6_1_prefix}1/${dummy6_mask} dev dummy1
2020 1546
2021 fail=0 1547 fail=0
2022 1548
2023 # Create vti6 interface bound to devi 1549 # Create vti6 interface bound to device, passing MTU, check it
2024 run_cmd ${ns_a} ip link add vti6_a mt 1550 run_cmd ${ns_a} ip link add vti6_a mtu 1300 type vti6 remote ${dummy6_0_prefix}2 local ${dummy6_0_prefix}1
2025 mtu="$(link_get_mtu "${ns_a}" vti6_a) 1551 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2026 if [ ${mtu} -ne 1300 ]; then 1552 if [ ${mtu} -ne 1300 ]; then
2027 err " vti6 MTU ${mtu} doesn' 1553 err " vti6 MTU ${mtu} doesn't match configured value 1300"
2028 fail=1 1554 fail=1
2029 fi 1555 fi
2030 1556
2031 # Move to another device with differe 1557 # Move to another device with different MTU, without passing MTU, check
2032 # MTU is adjusted 1558 # MTU is adjusted
2033 run_cmd ${ns_a} ip link set vti6_a ty 1559 run_cmd ${ns_a} ip link set vti6_a type vti6 remote ${dummy6_1_prefix}2 local ${dummy6_1_prefix}1
2034 mtu="$(link_get_mtu "${ns_a}" vti6_a) 1560 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2035 if [ ${mtu} -ne $((3000 - 40)) ]; the 1561 if [ ${mtu} -ne $((3000 - 40)) ]; then
2036 err " vti MTU ${mtu} is not 1562 err " vti MTU ${mtu} is not dummy MTU 3000 minus IPv6 header length"
2037 fail=1 1563 fail=1
2038 fi 1564 fi
2039 1565
2040 # Move it back, passing MTU, check MT 1566 # Move it back, passing MTU, check MTU is not overridden
2041 run_cmd ${ns_a} ip link set vti6_a mt 1567 run_cmd ${ns_a} ip link set vti6_a mtu 1280 type vti6 remote ${dummy6_0_prefix}2 local ${dummy6_0_prefix}1
2042 mtu="$(link_get_mtu "${ns_a}" vti6_a) 1568 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2043 if [ ${mtu} -ne 1280 ]; then 1569 if [ ${mtu} -ne 1280 ]; then
2044 err " vti6 MTU ${mtu} doesn' 1570 err " vti6 MTU ${mtu} doesn't match configured value 1280"
2045 fail=1 1571 fail=1
2046 fi 1572 fi
2047 1573
2048 return ${fail} 1574 return ${fail}
2049 } 1575 }
2050 1576
2051 check_command() { 1577 check_command() {
2052 cmd=${1} 1578 cmd=${1}
2053 1579
2054 if ! which ${cmd} > /dev/null 2>&1; t 1580 if ! which ${cmd} > /dev/null 2>&1; then
2055 err " missing required comma 1581 err " missing required command: '${cmd}'"
2056 return 1 1582 return 1
2057 fi 1583 fi
2058 return 0 1584 return 0
2059 } 1585 }
2060 1586
2061 check_running() { <<
2062 pid=${1} <<
2063 cmd=${2} <<
2064 <<
2065 [ "$(cat /proc/${pid}/cmdline 2>/dev/ <<
2066 } <<
2067 <<
2068 test_cleanup_vxlanX_exception() { 1587 test_cleanup_vxlanX_exception() {
2069 outer="${1}" 1588 outer="${1}"
2070 encap="vxlan" 1589 encap="vxlan"
2071 ll_mtu=4000 1590 ll_mtu=4000
2072 1591
2073 check_command taskset || return $ksft 1592 check_command taskset || return $ksft_skip
2074 cpu_list=$(grep -m 2 processor /proc/ 1593 cpu_list=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2)
2075 1594
2076 setup namespaces routing ${encap}${ou 1595 setup namespaces routing ${encap}${outer} || return $ksft_skip
2077 trace "${ns_a}" ${encap}_a "${ns_b} 1596 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
2078 "${ns_a}" veth_A-R1 "${ns_r1 1597 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2079 "${ns_b}" veth_B-R1 "${ns_r1 1598 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
2080 1599
2081 # Create route exception by exceeding 1600 # Create route exception by exceeding link layer MTU
2082 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1601 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
2083 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1602 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
2084 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1603 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
2085 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1604 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
2086 1605
2087 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 1606 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
2088 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 1607 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
2089 1608
2090 # Fill exception cache for multiple C 1609 # Fill exception cache for multiple CPUs (2)
2091 # we can always use inner IPv4 for th 1610 # we can always use inner IPv4 for that
2092 for cpu in ${cpu_list}; do 1611 for cpu in ${cpu_list}; do
2093 run_cmd taskset --cpu-list ${ 1612 run_cmd taskset --cpu-list ${cpu} ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${tunnel4_b_addr}
2094 done 1613 done
2095 1614
2096 ${ns_a} ip link del dev veth_A-R1 & 1615 ${ns_a} ip link del dev veth_A-R1 &
2097 iplink_pid=$! 1616 iplink_pid=$!
2098 for i in $(seq 1 20); do !! 1617 sleep 1
2099 check_running ${iplink_pid} " !! 1618 if [ "$(cat /proc/${iplink_pid}/cmdline 2>/dev/null | tr -d '\0')" = "iplinkdeldevveth_A-R1" ]; then
2100 sleep 0.1 !! 1619 err " can't delete veth device in a timely manner, PMTU dst likely leaked"
2101 done !! 1620 return 1
2102 err " can't delete veth device in a !! 1621 fi
2103 return 1 <<
2104 } 1622 }
2105 1623
2106 test_cleanup_ipv6_exception() { 1624 test_cleanup_ipv6_exception() {
2107 test_cleanup_vxlanX_exception 6 1625 test_cleanup_vxlanX_exception 6
2108 } 1626 }
2109 1627
2110 test_cleanup_ipv4_exception() { 1628 test_cleanup_ipv4_exception() {
2111 test_cleanup_vxlanX_exception 4 1629 test_cleanup_vxlanX_exception 4
2112 } 1630 }
2113 1631
2114 run_test() { 1632 run_test() {
2115 ( 1633 (
2116 tname="$1" 1634 tname="$1"
2117 tdesc="$2" 1635 tdesc="$2"
2118 1636
2119 unset IFS 1637 unset IFS
2120 1638
2121 # Since cleanup() relies on variables <<
2122 # has to run in this context. <<
2123 trap cleanup EXIT <<
2124 <<
2125 if [ "$VERBOSE" = "1" ]; then 1639 if [ "$VERBOSE" = "1" ]; then
2126 printf "\n################### 1640 printf "\n##########################################################################\n\n"
2127 fi 1641 fi
2128 1642
2129 eval test_${tname} 1643 eval test_${tname}
2130 ret=$? 1644 ret=$?
2131 1645
2132 if [ $ret -eq 0 ]; then 1646 if [ $ret -eq 0 ]; then
2133 printf "TEST: %-60s [ OK ]\n 1647 printf "TEST: %-60s [ OK ]\n" "${tdesc}"
2134 elif [ $ret -eq 1 ]; then 1648 elif [ $ret -eq 1 ]; then
2135 printf "TEST: %-60s [FAIL]\n 1649 printf "TEST: %-60s [FAIL]\n" "${tdesc}"
2136 if [ "${PAUSE_ON_FAIL}" = "ye 1650 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
2137 echo 1651 echo
2138 echo "Pausing. Hit en 1652 echo "Pausing. Hit enter to continue"
2139 read a 1653 read a
2140 fi 1654 fi
2141 err_flush 1655 err_flush
2142 exit 1 1656 exit 1
2143 elif [ $ret -eq $ksft_skip ]; then 1657 elif [ $ret -eq $ksft_skip ]; then
2144 printf "TEST: %-60s [SKIP]\n 1658 printf "TEST: %-60s [SKIP]\n" "${tdesc}"
2145 err_flush 1659 err_flush
2146 fi 1660 fi
2147 1661
2148 return $ret 1662 return $ret
2149 ) 1663 )
2150 ret=$? 1664 ret=$?
2151 case $ret in 1665 case $ret in
2152 0) 1666 0)
2153 all_skipped=false 1667 all_skipped=false
2154 [ $exitcode -eq $ksft !! 1668 [ $exitcode=$ksft_skip ] && exitcode=0
2155 ;; 1669 ;;
2156 $ksft_skip) 1670 $ksft_skip)
2157 [ $all_skipped = true 1671 [ $all_skipped = true ] && exitcode=$ksft_skip
2158 ;; 1672 ;;
2159 *) 1673 *)
2160 all_skipped=false 1674 all_skipped=false
2161 exitcode=1 1675 exitcode=1
2162 ;; 1676 ;;
2163 esac 1677 esac
2164 1678
2165 return $ret 1679 return $ret
2166 } 1680 }
2167 1681
2168 run_test_nh() { 1682 run_test_nh() {
2169 tname="$1" 1683 tname="$1"
2170 tdesc="$2" 1684 tdesc="$2"
2171 1685
2172 USE_NH=yes 1686 USE_NH=yes
2173 run_test "${tname}" "${tdesc} - nexth 1687 run_test "${tname}" "${tdesc} - nexthop objects"
2174 USE_NH=no 1688 USE_NH=no
2175 } 1689 }
2176 1690
2177 test_list_flush_ipv4_exception() { 1691 test_list_flush_ipv4_exception() {
2178 setup namespaces routing || return $k 1692 setup namespaces routing || return $ksft_skip
2179 trace "${ns_a}" veth_A-R1 "${ns_r 1693 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2180 "${ns_r1}" veth_R1-B "${ns_b 1694 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2181 "${ns_a}" veth_A-R2 "${ns_r 1695 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2182 "${ns_r2}" veth_R2-B "${ns_b 1696 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2183 1697
2184 dst_prefix1="${prefix4}.${b_r1}." 1698 dst_prefix1="${prefix4}.${b_r1}."
2185 dst2="${prefix4}.${b_r2}.1" 1699 dst2="${prefix4}.${b_r2}.1"
2186 1700
2187 # Set up initial MTU values 1701 # Set up initial MTU values
2188 mtu "${ns_a}" veth_A-R1 2000 1702 mtu "${ns_a}" veth_A-R1 2000
2189 mtu "${ns_r1}" veth_R1-A 2000 1703 mtu "${ns_r1}" veth_R1-A 2000
2190 mtu "${ns_r1}" veth_R1-B 1500 1704 mtu "${ns_r1}" veth_R1-B 1500
2191 mtu "${ns_b}" veth_B-R1 1500 1705 mtu "${ns_b}" veth_B-R1 1500
2192 1706
2193 mtu "${ns_a}" veth_A-R2 2000 1707 mtu "${ns_a}" veth_A-R2 2000
2194 mtu "${ns_r2}" veth_R2-A 2000 1708 mtu "${ns_r2}" veth_R2-A 2000
2195 mtu "${ns_r2}" veth_R2-B 1500 1709 mtu "${ns_r2}" veth_R2-B 1500
2196 mtu "${ns_b}" veth_B-R2 1500 1710 mtu "${ns_b}" veth_B-R2 1500
2197 1711
2198 fail=0 1712 fail=0
2199 1713
2200 # Add 100 addresses for veth endpoint 1714 # Add 100 addresses for veth endpoint on B reached by default A route
2201 for i in $(seq 100 199); do 1715 for i in $(seq 100 199); do
2202 run_cmd ${ns_b} ip addr add " 1716 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2203 done 1717 done
2204 1718
2205 # Create 100 cached route exceptions 1719 # Create 100 cached route exceptions for path via R1, one via R2. Note
2206 # that with IPv4 we need to actually 1720 # that with IPv4 we need to actually cause a route lookup that matches
2207 # the exception caused by ICMP, in or 1721 # the exception caused by ICMP, in order to actually have a cached
2208 # route, so we need to ping each dest 1722 # route, so we need to ping each destination twice
2209 for i in $(seq 100 199); do 1723 for i in $(seq 100 199); do
2210 run_cmd ${ns_a} ping -q -M wa 1724 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst_prefix1}${i}"
2211 done 1725 done
2212 run_cmd ${ns_a} ping -q -M want -i 0. 1726 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}"
2213 1727
2214 if [ "$(${ns_a} ip -oneline route lis 1728 if [ "$(${ns_a} ip -oneline route list cache | wc -l)" -ne 101 ]; then
2215 err " can't list cached exce 1729 err " can't list cached exceptions"
2216 fail=1 1730 fail=1
2217 fi 1731 fi
2218 1732
2219 run_cmd ${ns_a} ip route flush cache 1733 run_cmd ${ns_a} ip route flush cache
2220 pmtu1="$(route_get_dst_pmtu_from_exce 1734 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}1)"
2221 pmtu2="$(route_get_dst_pmtu_from_exce 1735 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}2)"
2222 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 1736 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2223 [ -n "$(${ns_a} ip route list cach 1737 [ -n "$(${ns_a} ip route list cache)" ]; then
2224 err " can't flush cached exc 1738 err " can't flush cached exceptions"
2225 fail=1 1739 fail=1
2226 fi 1740 fi
2227 1741
2228 return ${fail} 1742 return ${fail}
2229 } 1743 }
2230 1744
2231 test_list_flush_ipv6_exception() { 1745 test_list_flush_ipv6_exception() {
2232 setup namespaces routing || return $k 1746 setup namespaces routing || return $ksft_skip
2233 trace "${ns_a}" veth_A-R1 "${ns_r 1747 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2234 "${ns_r1}" veth_R1-B "${ns_b 1748 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2235 "${ns_a}" veth_A-R2 "${ns_r 1749 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2236 "${ns_r2}" veth_R2-B "${ns_b 1750 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2237 1751
2238 dst_prefix1="${prefix6}:${b_r1}::" 1752 dst_prefix1="${prefix6}:${b_r1}::"
2239 dst2="${prefix6}:${b_r2}::1" 1753 dst2="${prefix6}:${b_r2}::1"
2240 1754
2241 # Set up initial MTU values 1755 # Set up initial MTU values
2242 mtu "${ns_a}" veth_A-R1 2000 1756 mtu "${ns_a}" veth_A-R1 2000
2243 mtu "${ns_r1}" veth_R1-A 2000 1757 mtu "${ns_r1}" veth_R1-A 2000
2244 mtu "${ns_r1}" veth_R1-B 1500 1758 mtu "${ns_r1}" veth_R1-B 1500
2245 mtu "${ns_b}" veth_B-R1 1500 1759 mtu "${ns_b}" veth_B-R1 1500
2246 1760
2247 mtu "${ns_a}" veth_A-R2 2000 1761 mtu "${ns_a}" veth_A-R2 2000
2248 mtu "${ns_r2}" veth_R2-A 2000 1762 mtu "${ns_r2}" veth_R2-A 2000
2249 mtu "${ns_r2}" veth_R2-B 1500 1763 mtu "${ns_r2}" veth_R2-B 1500
2250 mtu "${ns_b}" veth_B-R2 1500 1764 mtu "${ns_b}" veth_B-R2 1500
2251 1765
2252 fail=0 1766 fail=0
2253 1767
2254 # Add 100 addresses for veth endpoint 1768 # Add 100 addresses for veth endpoint on B reached by default A route
2255 for i in $(seq 100 199); do 1769 for i in $(seq 100 199); do
2256 run_cmd ${ns_b} ip addr add " 1770 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2257 done 1771 done
2258 1772
2259 # Create 100 cached route exceptions 1773 # Create 100 cached route exceptions for path via R1, one via R2
2260 for i in $(seq 100 199); do 1774 for i in $(seq 100 199); do
2261 run_cmd ${ns_a} ping -q -M wa 1775 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}"
2262 done 1776 done
2263 run_cmd ${ns_a} ping -q -M want -i 0. 1777 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}"
2264 if [ "$(${ns_a} ip -oneline -6 route 1778 if [ "$(${ns_a} ip -oneline -6 route list cache | wc -l)" -ne 101 ]; then
2265 err " can't list cached exce 1779 err " can't list cached exceptions"
2266 fail=1 1780 fail=1
2267 fi 1781 fi
2268 1782
2269 run_cmd ${ns_a} ip -6 route flush cac 1783 run_cmd ${ns_a} ip -6 route flush cache
2270 pmtu1="$(route_get_dst_pmtu_from_exce 1784 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst_prefix1}100")"
2271 pmtu2="$(route_get_dst_pmtu_from_exce 1785 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2272 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 1786 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2273 [ -n "$(${ns_a} ip -6 route list c 1787 [ -n "$(${ns_a} ip -6 route list cache)" ]; then
2274 err " can't flush cached exc 1788 err " can't flush cached exceptions"
2275 fail=1 1789 fail=1
2276 fi 1790 fi
2277 1791
2278 return ${fail} 1792 return ${fail}
2279 } 1793 }
2280 1794
2281 test_pmtu_ipvX_route_change() { 1795 test_pmtu_ipvX_route_change() {
2282 family=${1} 1796 family=${1}
2283 1797
2284 setup namespaces routing || return 2 1798 setup namespaces routing || return 2
2285 trace "${ns_a}" veth_A-R1 "${ns_r 1799 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2286 "${ns_r1}" veth_R1-B "${ns_b 1800 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2287 "${ns_a}" veth_A-R2 "${ns_r 1801 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2288 "${ns_r2}" veth_R2-B "${ns_b 1802 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2289 1803
2290 if [ ${family} -eq 4 ]; then 1804 if [ ${family} -eq 4 ]; then
2291 ping=ping 1805 ping=ping
2292 dst1="${prefix4}.${b_r1}.1" 1806 dst1="${prefix4}.${b_r1}.1"
2293 dst2="${prefix4}.${b_r2}.1" 1807 dst2="${prefix4}.${b_r2}.1"
2294 gw="${prefix4}.${a_r1}.2" 1808 gw="${prefix4}.${a_r1}.2"
2295 else 1809 else
2296 ping=${ping6} 1810 ping=${ping6}
2297 dst1="${prefix6}:${b_r1}::1" 1811 dst1="${prefix6}:${b_r1}::1"
2298 dst2="${prefix6}:${b_r2}::1" 1812 dst2="${prefix6}:${b_r2}::1"
2299 gw="${prefix6}:${a_r1}::2" 1813 gw="${prefix6}:${a_r1}::2"
2300 fi 1814 fi
2301 1815
2302 # Set up initial MTU values 1816 # Set up initial MTU values
2303 mtu "${ns_a}" veth_A-R1 2000 1817 mtu "${ns_a}" veth_A-R1 2000
2304 mtu "${ns_r1}" veth_R1-A 2000 1818 mtu "${ns_r1}" veth_R1-A 2000
2305 mtu "${ns_r1}" veth_R1-B 1400 1819 mtu "${ns_r1}" veth_R1-B 1400
2306 mtu "${ns_b}" veth_B-R1 1400 1820 mtu "${ns_b}" veth_B-R1 1400
2307 1821
2308 mtu "${ns_a}" veth_A-R2 2000 1822 mtu "${ns_a}" veth_A-R2 2000
2309 mtu "${ns_r2}" veth_R2-A 2000 1823 mtu "${ns_r2}" veth_R2-A 2000
2310 mtu "${ns_r2}" veth_R2-B 1500 1824 mtu "${ns_r2}" veth_R2-B 1500
2311 mtu "${ns_b}" veth_B-R2 1500 1825 mtu "${ns_b}" veth_B-R2 1500
2312 1826
2313 # Create route exceptions 1827 # Create route exceptions
2314 run_cmd ${ns_a} ${ping} -q -M want -i 1828 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst1}
2315 run_cmd ${ns_a} ${ping} -q -M want -i 1829 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
2316 1830
2317 # Check that exceptions have been cre 1831 # Check that exceptions have been created with the correct PMTU
2318 pmtu_1="$(route_get_dst_pmtu_from_exc 1832 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
2319 check_pmtu_value "1400" "${pmtu_1}" " 1833 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
2320 pmtu_2="$(route_get_dst_pmtu_from_exc 1834 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2321 check_pmtu_value "1500" "${pmtu_2}" " 1835 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
2322 1836
2323 # Replace the route from A to R1 1837 # Replace the route from A to R1
2324 run_cmd ${ns_a} ip route change defau 1838 run_cmd ${ns_a} ip route change default via ${gw}
2325 1839
2326 # Delete the device in A 1840 # Delete the device in A
2327 run_cmd ${ns_a} ip link del "veth_A-R 1841 run_cmd ${ns_a} ip link del "veth_A-R1"
2328 } 1842 }
2329 1843
2330 test_pmtu_ipv4_route_change() { 1844 test_pmtu_ipv4_route_change() {
2331 test_pmtu_ipvX_route_change 4 1845 test_pmtu_ipvX_route_change 4
2332 } 1846 }
2333 1847
2334 test_pmtu_ipv6_route_change() { 1848 test_pmtu_ipv6_route_change() {
2335 test_pmtu_ipvX_route_change 6 1849 test_pmtu_ipvX_route_change 6
2336 } 1850 }
2337 1851
2338 usage() { 1852 usage() {
2339 echo 1853 echo
2340 echo "$0 [OPTIONS] [TEST]..." 1854 echo "$0 [OPTIONS] [TEST]..."
2341 echo "If no TEST argument is given, a 1855 echo "If no TEST argument is given, all tests will be run."
2342 echo 1856 echo
2343 echo "Options" 1857 echo "Options"
2344 echo " --trace: capture traffic to T 1858 echo " --trace: capture traffic to TEST_INTERFACE.pcap"
2345 echo 1859 echo
2346 echo "Available tests${tests}" 1860 echo "Available tests${tests}"
2347 exit 1 1861 exit 1
2348 } 1862 }
2349 1863
2350 ############################################# 1864 ################################################################################
2351 # 1865 #
2352 exitcode=0 1866 exitcode=0
2353 desc=0 1867 desc=0
2354 all_skipped=true 1868 all_skipped=true
2355 1869
2356 while getopts :ptv o 1870 while getopts :ptv o
2357 do 1871 do
2358 case $o in 1872 case $o in
2359 p) PAUSE_ON_FAIL=yes;; 1873 p) PAUSE_ON_FAIL=yes;;
2360 v) VERBOSE=1;; 1874 v) VERBOSE=1;;
2361 t) if which tcpdump > /dev/null 2>&1; 1875 t) if which tcpdump > /dev/null 2>&1; then
2362 TRACING=1 1876 TRACING=1
2363 else 1877 else
2364 echo "=== tcpdump not availab 1878 echo "=== tcpdump not available, tracing disabled"
2365 fi 1879 fi
2366 ;; 1880 ;;
2367 *) usage;; 1881 *) usage;;
2368 esac 1882 esac
2369 done 1883 done
2370 shift $(($OPTIND-1)) 1884 shift $(($OPTIND-1))
2371 1885
2372 IFS=" 1886 IFS="
2373 " 1887 "
2374 1888
2375 for arg do 1889 for arg do
2376 # Check first that all requested test 1890 # Check first that all requested tests are available before running any
2377 command -v > /dev/null "test_${arg}" 1891 command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
2378 done 1892 done
2379 1893
2380 trap cleanup EXIT 1894 trap cleanup EXIT
2381 1895
2382 # start clean 1896 # start clean
2383 cleanup 1897 cleanup
2384 1898
2385 HAVE_NH=no 1899 HAVE_NH=no
2386 ip nexthop ls >/dev/null 2>&1 1900 ip nexthop ls >/dev/null 2>&1
2387 [ $? -eq 0 ] && HAVE_NH=yes 1901 [ $? -eq 0 ] && HAVE_NH=yes
2388 1902
2389 name="" 1903 name=""
2390 desc="" 1904 desc=""
2391 rerun_nh=0 1905 rerun_nh=0
2392 for t in ${tests}; do 1906 for t in ${tests}; do
2393 [ "${name}" = "" ] && name="${t} 1907 [ "${name}" = "" ] && name="${t}" && continue
2394 [ "${desc}" = "" ] && desc="${t} 1908 [ "${desc}" = "" ] && desc="${t}" && continue
2395 1909
2396 if [ "${HAVE_NH}" = "yes" ]; then 1910 if [ "${HAVE_NH}" = "yes" ]; then
2397 rerun_nh="${t}" 1911 rerun_nh="${t}"
2398 fi 1912 fi
2399 1913
2400 run_this=1 1914 run_this=1
2401 for arg do 1915 for arg do
2402 [ "${arg}" != "${arg#--*}" ] 1916 [ "${arg}" != "${arg#--*}" ] && continue
2403 [ "${arg}" = "${name}" ] && r 1917 [ "${arg}" = "${name}" ] && run_this=1 && break
2404 run_this=0 1918 run_this=0
2405 done 1919 done
2406 if [ $run_this -eq 1 ]; then 1920 if [ $run_this -eq 1 ]; then
2407 run_test "${name}" "${desc}" 1921 run_test "${name}" "${desc}"
2408 # if test was skipped no need 1922 # if test was skipped no need to retry with nexthop objects
2409 [ $? -eq $ksft_skip ] && reru 1923 [ $? -eq $ksft_skip ] && rerun_nh=0
2410 1924
2411 if [ "${rerun_nh}" = "1" ]; t 1925 if [ "${rerun_nh}" = "1" ]; then
2412 run_test_nh "${name}" 1926 run_test_nh "${name}" "${desc}"
2413 fi 1927 fi
2414 fi 1928 fi
2415 name="" 1929 name=""
2416 desc="" 1930 desc=""
2417 rerun_nh=0 1931 rerun_nh=0
2418 done 1932 done
2419 1933
2420 exit ${exitcode} 1934 exit ${exitcode}
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