1 #!/bin/bash 1 #!/bin/bash
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 29 # - pmtu_ipv4_dscp_icmp_exception
30 # Set up the same network topology as pm 30 # Set up the same network topology as pmtu_ipv4, but use non-default
31 # routing table in A. A fib-rule is used 31 # routing table in A. A fib-rule is used to jump to this routing table
32 # based on DSCP. Send ICMPv4 packets wit 32 # based on DSCP. Send ICMPv4 packets with the expected DSCP value and
33 # verify that ECN doesn't interfere with 33 # verify that ECN doesn't interfere with the creation of PMTU exceptions.
34 # 34 #
35 # - pmtu_ipv4_dscp_udp_exception 35 # - pmtu_ipv4_dscp_udp_exception
36 # Same as pmtu_ipv4_dscp_icmp_exception, 36 # Same as pmtu_ipv4_dscp_icmp_exception, but use UDP instead of ICMP.
37 # 37 #
38 # - pmtu_ipv4_vxlan4_exception 38 # - pmtu_ipv4_vxlan4_exception
39 # Set up the same network topology as pm 39 # Set up the same network topology as pmtu_ipv4, create a VXLAN tunnel
40 # over IPv4 between A and B, routed via 40 # 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 41 # 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 42 # R1. Send IPv4 packets, exceeding the MTU between R1 and B, over VXLAN
43 # from A to B and check that the PMTU ex 43 # from A to B and check that the PMTU exception is created with the right
44 # value on A 44 # value on A
45 # 45 #
46 # - pmtu_ipv6_vxlan4_exception 46 # - pmtu_ipv6_vxlan4_exception
47 # Same as pmtu_ipv4_vxlan4_exception, bu 47 # Same as pmtu_ipv4_vxlan4_exception, but send IPv6 packets from A to B
48 # 48 #
49 # - pmtu_ipv4_vxlan6_exception 49 # - pmtu_ipv4_vxlan6_exception
50 # Same as pmtu_ipv4_vxlan4_exception, bu 50 # Same as pmtu_ipv4_vxlan4_exception, but use IPv6 transport from A to B
51 # 51 #
52 # - pmtu_ipv6_vxlan6_exception 52 # - pmtu_ipv6_vxlan6_exception
53 # Same as pmtu_ipv4_vxlan6_exception, bu 53 # Same as pmtu_ipv4_vxlan6_exception, but send IPv6 packets from A to B
54 # 54 #
55 # - pmtu_ipv4_geneve4_exception 55 # - pmtu_ipv4_geneve4_exception
56 # Same as pmtu_ipv4_vxlan4_exception, bu 56 # Same as pmtu_ipv4_vxlan4_exception, but using a GENEVE tunnel instead of
57 # VXLAN 57 # VXLAN
58 # 58 #
59 # - pmtu_ipv6_geneve4_exception 59 # - pmtu_ipv6_geneve4_exception
60 # Same as pmtu_ipv6_vxlan4_exception, bu 60 # Same as pmtu_ipv6_vxlan4_exception, but using a GENEVE tunnel instead of
61 # VXLAN 61 # VXLAN
62 # 62 #
63 # - pmtu_ipv4_geneve6_exception 63 # - pmtu_ipv4_geneve6_exception
64 # Same as pmtu_ipv4_vxlan6_exception, bu 64 # Same as pmtu_ipv4_vxlan6_exception, but using a GENEVE tunnel instead of
65 # VXLAN 65 # VXLAN
66 # 66 #
67 # - pmtu_ipv6_geneve6_exception 67 # - pmtu_ipv6_geneve6_exception
68 # Same as pmtu_ipv6_vxlan6_exception, bu 68 # Same as pmtu_ipv6_vxlan6_exception, but using a GENEVE tunnel instead of
69 # VXLAN 69 # VXLAN
70 # 70 #
71 # - pmtu_ipv{4,6}_br_vxlan{4,6}_exception 71 # - pmtu_ipv{4,6}_br_vxlan{4,6}_exception
72 # Set up three namespaces, A, B, and C, 72 # 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 73 # 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 74 # connected to B via a VXLAN endpoint, which is directly bridged to C.
75 # MTU on the B-R1 link is lower than oth 75 # MTU on the B-R1 link is lower than other MTUs.
76 # 76 #
77 # Check that both C and A are able to co 77 # Check that both C and A are able to communicate with B over the VXLAN
78 # tunnel, and that PMTU exceptions with 78 # tunnel, and that PMTU exceptions with the correct values are created.
79 # 79 #
80 # segment a_r1 segm 80 # segment a_r1 segment b_r1 b_r1: 4000
81 # .--------------R1----- 81 # .--------------R1--------------. everything
82 # C---veth A 82 # C---veth A B else: 5000
83 # ' bridge 83 # ' bridge |
84 # '---- - - - - - VXLAN - - 84 # '---- - - - - - VXLAN - - - - - - - '
85 # 85 #
86 # - pmtu_ipv{4,6}_br_geneve{4,6}_exception 86 # - pmtu_ipv{4,6}_br_geneve{4,6}_exception
87 # Same as pmtu_ipv{4,6}_br_vxlan{4,6}_ex 87 # Same as pmtu_ipv{4,6}_br_vxlan{4,6}_exception, with a GENEVE tunnel
88 # instead. 88 # instead.
89 # 89 #
90 # - pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception 90 # - pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception
91 # Set up two namespaces, B, and C, with 91 # Set up two namespaces, B, and C, with routing between the init namespace
92 # and B over R1. A and R2 are unused in 92 # 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 93 # has a veth connection to C, and is connected to B via a VXLAN endpoint,
94 # which is handled by Open vSwitch and b 94 # which is handled by Open vSwitch and bridged to C. MTU on the B-R1 link
95 # is lower than other MTUs. 95 # is lower than other MTUs.
96 # 96 #
97 # Check that C is able to communicate wi 97 # Check that C is able to communicate with B over the VXLAN tunnel, and
98 # that PMTU exceptions with the correct 98 # that PMTU exceptions with the correct values are created.
99 # 99 #
100 # segment a_r1 segm 100 # segment a_r1 segment b_r1 b_r1: 4000
101 # .--------------R1----- 101 # .--------------R1--------------. everything
102 # C---veth init 102 # C---veth init B else: 5000
103 # '- ovs 103 # '- ovs |
104 # '---- - - - - - VXLAN - - 104 # '---- - - - - - VXLAN - - - - - - - '
105 # 105 #
106 # - pmtu_ipv{4,6}_ovs_geneve{4,6}_exception 106 # - pmtu_ipv{4,6}_ovs_geneve{4,6}_exception
107 # Same as pmtu_ipv{4,6}_ovs_vxlan{4,6}_e 107 # Same as pmtu_ipv{4,6}_ovs_vxlan{4,6}_exception, with a GENEVE tunnel
108 # instead. 108 # instead.
109 # 109 #
110 # - pmtu_ipv{4,6}_fou{4,6}_exception 110 # - pmtu_ipv{4,6}_fou{4,6}_exception
111 # Same as pmtu_ipv4_vxlan4, but using a 111 # Same as pmtu_ipv4_vxlan4, but using a direct IPv4/IPv6 encapsulation
112 # (FoU) over IPv4/IPv6, instead of VXLAN 112 # (FoU) over IPv4/IPv6, instead of VXLAN
113 # 113 #
114 # - pmtu_ipv{4,6}_fou{4,6}_exception 114 # - pmtu_ipv{4,6}_fou{4,6}_exception
115 # Same as pmtu_ipv4_vxlan4, but using a 115 # Same as pmtu_ipv4_vxlan4, but using a generic UDP IPv4/IPv6
116 # encapsulation (GUE) over IPv4/IPv6, in 116 # encapsulation (GUE) over IPv4/IPv6, instead of VXLAN
117 # 117 #
118 # - pmtu_ipv{4,6}_ipv{4,6}_exception 118 # - pmtu_ipv{4,6}_ipv{4,6}_exception
119 # Same as pmtu_ipv4_vxlan4, but using a 119 # Same as pmtu_ipv4_vxlan4, but using a IPv4/IPv6 tunnel over IPv4/IPv6,
120 # instead of VXLAN 120 # instead of VXLAN
121 # 121 #
122 # - pmtu_vti4_exception 122 # - pmtu_vti4_exception
123 # Set up vti tunnel on top of veth, with 123 # Set up vti tunnel on top of veth, with xfrm states and policies, in two
124 # namespaces with matching endpoints. Ch 124 # namespaces with matching endpoints. Check that route exception is not
125 # created if link layer MTU is not excee 125 # created if link layer MTU is not exceeded, then exceed it and check that
126 # exception is created with the expected 126 # exception is created with the expected PMTU. The approach described
127 # below for IPv6 doesn't apply here, bec 127 # below for IPv6 doesn't apply here, because, on IPv4, administrative MTU
128 # changes alone won't affect PMTU 128 # changes alone won't affect PMTU
129 # 129 #
130 # - pmtu_vti4_udp_exception 130 # - pmtu_vti4_udp_exception
131 # Same as pmtu_vti4_exception, but using 131 # Same as pmtu_vti4_exception, but using ESP-in-UDP
132 # 132 #
133 # - pmtu_vti4_udp_routed_exception 133 # - pmtu_vti4_udp_routed_exception
134 # Set up vti tunnel on top of veth conne 134 # Set up vti tunnel on top of veth connected through routing namespace and
135 # add xfrm states and policies with ESP- 135 # add xfrm states and policies with ESP-in-UDP encapsulation. Check that
136 # route exception is not created if link 136 # route exception is not created if link layer MTU is not exceeded, then
137 # lower MTU on second part of routed env 137 # lower MTU on second part of routed environment and check that exception
138 # is created with the expected PMTU. 138 # is created with the expected PMTU.
139 # 139 #
140 # - pmtu_vti6_exception 140 # - pmtu_vti6_exception
141 # Set up vti6 tunnel on top of veth, wit 141 # Set up vti6 tunnel on top of veth, with xfrm states and policies, in two
142 # namespaces with matching endpoints. Ch 142 # namespaces with matching endpoints. Check that route exception is
143 # created by exceeding link layer MTU wi 143 # created by exceeding link layer MTU with ping to other endpoint. Then
144 # decrease and increase MTU of tunnel, c 144 # decrease and increase MTU of tunnel, checking that route exception PMTU
145 # changes accordingly 145 # changes accordingly
146 # 146 #
147 # - pmtu_vti6_udp_exception 147 # - pmtu_vti6_udp_exception
148 # Same as pmtu_vti6_exception, but using 148 # Same as pmtu_vti6_exception, but using ESP-in-UDP
149 # 149 #
150 # - pmtu_vti6_udp_routed_exception 150 # - pmtu_vti6_udp_routed_exception
151 # Same as pmtu_vti6_udp_routed_exception 151 # Same as pmtu_vti6_udp_routed_exception but with routing between vti
152 # endpoints 152 # endpoints
153 # 153 #
154 # - pmtu_vti4_default_mtu 154 # - pmtu_vti4_default_mtu
155 # Set up vti4 tunnel on top of veth, in 155 # Set up vti4 tunnel on top of veth, in two namespaces with matching
156 # endpoints. Check that MTU assigned to 156 # endpoints. Check that MTU assigned to vti interface is the MTU of the
157 # lower layer (veth) minus additional lo 157 # lower layer (veth) minus additional lower layer headers (zero, for veth)
158 # minus IPv4 header length 158 # minus IPv4 header length
159 # 159 #
160 # - pmtu_vti6_default_mtu 160 # - pmtu_vti6_default_mtu
161 # Same as above, for IPv6 161 # Same as above, for IPv6
162 # 162 #
163 # - pmtu_vti4_link_add_mtu 163 # - pmtu_vti4_link_add_mtu
164 # Set up vti4 interface passing MTU valu 164 # Set up vti4 interface passing MTU value at link creation, check MTU is
165 # configured, and that link is not creat 165 # configured, and that link is not created with invalid MTU values
166 # 166 #
167 # - pmtu_vti6_link_add_mtu 167 # - pmtu_vti6_link_add_mtu
168 # Same as above, for IPv6 168 # Same as above, for IPv6
169 # 169 #
170 # - pmtu_vti6_link_change_mtu 170 # - pmtu_vti6_link_change_mtu
171 # Set up two dummy interfaces with diffe 171 # Set up two dummy interfaces with different MTUs, create a vti6 tunnel
172 # and check that configured MTU is used 172 # and check that configured MTU is used on link creation and changes, and
173 # that MTU is properly calculated instea 173 # that MTU is properly calculated instead when MTU is not configured from
174 # userspace 174 # userspace
175 # 175 #
176 # - cleanup_ipv4_exception 176 # - cleanup_ipv4_exception
177 # Similar to pmtu_ipv4_vxlan4_exception, 177 # Similar to pmtu_ipv4_vxlan4_exception, but explicitly generate PMTU
178 # exceptions on multiple CPUs and check 178 # exceptions on multiple CPUs and check that the veth device tear-down
179 # happens in a timely manner 179 # happens in a timely manner
180 # 180 #
181 # - cleanup_ipv6_exception 181 # - cleanup_ipv6_exception
182 # Same as above, but use IPv6 transport 182 # Same as above, but use IPv6 transport from A to B
183 # 183 #
184 # - list_flush_ipv4_exception 184 # - list_flush_ipv4_exception
185 # Using the same topology as in pmtu_ipv 185 # Using the same topology as in pmtu_ipv4, create exceptions, and check
186 # they are shown when listing exception 186 # they are shown when listing exception caches, gone after flushing them
187 # 187 #
188 # - list_flush_ipv6_exception 188 # - list_flush_ipv6_exception
189 # Using the same topology as in pmtu_ipv 189 # Using the same topology as in pmtu_ipv6, create exceptions, and check
190 # they are shown when listing exception 190 # they are shown when listing exception caches, gone after flushing them
191 # 191 #
192 # - pmtu_ipv4_route_change 192 # - pmtu_ipv4_route_change
193 # Use the same topology as in pmtu_ipv4, 193 # Use the same topology as in pmtu_ipv4, but issue a route replacement
194 # command and delete the corresponding d 194 # command and delete the corresponding device afterward. This tests for
195 # proper cleanup of the PMTU exceptions 195 # proper cleanup of the PMTU exceptions by the route replacement path.
196 # Device unregistration should complete 196 # Device unregistration should complete successfully
197 # 197 #
198 # - pmtu_ipv6_route_change 198 # - pmtu_ipv6_route_change
199 # Same as above but with IPv6 199 # Same as above but with IPv6
200 200
201 source lib.sh 201 source lib.sh
202 source net_helper.sh 202 source net_helper.sh
203 203
204 PAUSE_ON_FAIL=no 204 PAUSE_ON_FAIL=no
205 VERBOSE=0 205 VERBOSE=0
206 TRACING=0 206 TRACING=0
207 207
208 # Some systems don't have a ping6 binary anymo 208 # Some systems don't have a ping6 binary anymore
209 which ping6 > /dev/null 2>&1 && ping6=$(which 209 which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
210 210
211 # Name 211 # Name Description re-run with nh
212 tests=" 212 tests="
213 pmtu_ipv4_exception ipv4: 213 pmtu_ipv4_exception ipv4: PMTU exceptions 1
214 pmtu_ipv6_exception ipv6: 214 pmtu_ipv6_exception ipv6: PMTU exceptions 1
215 pmtu_ipv4_dscp_icmp_exception ICMPv4 215 pmtu_ipv4_dscp_icmp_exception ICMPv4 with DSCP and ECN: PMTU exceptions 1
216 pmtu_ipv4_dscp_udp_exception UDPv4 216 pmtu_ipv4_dscp_udp_exception UDPv4 with DSCP and ECN: PMTU exceptions 1
217 pmtu_ipv4_vxlan4_exception IPv4 o 217 pmtu_ipv4_vxlan4_exception IPv4 over vxlan4: PMTU exceptions 1
218 pmtu_ipv6_vxlan4_exception IPv6 o 218 pmtu_ipv6_vxlan4_exception IPv6 over vxlan4: PMTU exceptions 1
219 pmtu_ipv4_vxlan6_exception IPv4 o 219 pmtu_ipv4_vxlan6_exception IPv4 over vxlan6: PMTU exceptions 1
220 pmtu_ipv6_vxlan6_exception IPv6 o 220 pmtu_ipv6_vxlan6_exception IPv6 over vxlan6: PMTU exceptions 1
221 pmtu_ipv4_geneve4_exception IPv4 o 221 pmtu_ipv4_geneve4_exception IPv4 over geneve4: PMTU exceptions 1
222 pmtu_ipv6_geneve4_exception IPv6 o 222 pmtu_ipv6_geneve4_exception IPv6 over geneve4: PMTU exceptions 1
223 pmtu_ipv4_geneve6_exception IPv4 o 223 pmtu_ipv4_geneve6_exception IPv4 over geneve6: PMTU exceptions 1
224 pmtu_ipv6_geneve6_exception IPv6 o 224 pmtu_ipv6_geneve6_exception IPv6 over geneve6: PMTU exceptions 1
225 pmtu_ipv4_br_vxlan4_exception IPv4, 225 pmtu_ipv4_br_vxlan4_exception IPv4, bridged vxlan4: PMTU exceptions 1
226 pmtu_ipv6_br_vxlan4_exception IPv6, 226 pmtu_ipv6_br_vxlan4_exception IPv6, bridged vxlan4: PMTU exceptions 1
227 pmtu_ipv4_br_vxlan6_exception IPv4, 227 pmtu_ipv4_br_vxlan6_exception IPv4, bridged vxlan6: PMTU exceptions 1
228 pmtu_ipv6_br_vxlan6_exception IPv6, 228 pmtu_ipv6_br_vxlan6_exception IPv6, bridged vxlan6: PMTU exceptions 1
229 pmtu_ipv4_br_geneve4_exception IPv4, 229 pmtu_ipv4_br_geneve4_exception IPv4, bridged geneve4: PMTU exceptions 1
230 pmtu_ipv6_br_geneve4_exception IPv6, 230 pmtu_ipv6_br_geneve4_exception IPv6, bridged geneve4: PMTU exceptions 1
231 pmtu_ipv4_br_geneve6_exception IPv4, 231 pmtu_ipv4_br_geneve6_exception IPv4, bridged geneve6: PMTU exceptions 1
232 pmtu_ipv6_br_geneve6_exception IPv6, 232 pmtu_ipv6_br_geneve6_exception IPv6, bridged geneve6: PMTU exceptions 1
233 pmtu_ipv4_ovs_vxlan4_exception IPv4, 233 pmtu_ipv4_ovs_vxlan4_exception IPv4, OVS vxlan4: PMTU exceptions 1
234 pmtu_ipv6_ovs_vxlan4_exception IPv6, 234 pmtu_ipv6_ovs_vxlan4_exception IPv6, OVS vxlan4: PMTU exceptions 1
235 pmtu_ipv4_ovs_vxlan6_exception IPv4, 235 pmtu_ipv4_ovs_vxlan6_exception IPv4, OVS vxlan6: PMTU exceptions 1
236 pmtu_ipv6_ovs_vxlan6_exception IPv6, 236 pmtu_ipv6_ovs_vxlan6_exception IPv6, OVS vxlan6: PMTU exceptions 1
237 pmtu_ipv4_ovs_geneve4_exception IPv4, 237 pmtu_ipv4_ovs_geneve4_exception IPv4, OVS geneve4: PMTU exceptions 1
238 pmtu_ipv6_ovs_geneve4_exception IPv6, 238 pmtu_ipv6_ovs_geneve4_exception IPv6, OVS geneve4: PMTU exceptions 1
239 pmtu_ipv4_ovs_geneve6_exception IPv4, 239 pmtu_ipv4_ovs_geneve6_exception IPv4, OVS geneve6: PMTU exceptions 1
240 pmtu_ipv6_ovs_geneve6_exception IPv6, 240 pmtu_ipv6_ovs_geneve6_exception IPv6, OVS geneve6: PMTU exceptions 1
241 pmtu_ipv4_fou4_exception IPv4 o 241 pmtu_ipv4_fou4_exception IPv4 over fou4: PMTU exceptions 1
242 pmtu_ipv6_fou4_exception IPv6 o 242 pmtu_ipv6_fou4_exception IPv6 over fou4: PMTU exceptions 1
243 pmtu_ipv4_fou6_exception IPv4 o 243 pmtu_ipv4_fou6_exception IPv4 over fou6: PMTU exceptions 1
244 pmtu_ipv6_fou6_exception IPv6 o 244 pmtu_ipv6_fou6_exception IPv6 over fou6: PMTU exceptions 1
245 pmtu_ipv4_gue4_exception IPv4 o 245 pmtu_ipv4_gue4_exception IPv4 over gue4: PMTU exceptions 1
246 pmtu_ipv6_gue4_exception IPv6 o 246 pmtu_ipv6_gue4_exception IPv6 over gue4: PMTU exceptions 1
247 pmtu_ipv4_gue6_exception IPv4 o 247 pmtu_ipv4_gue6_exception IPv4 over gue6: PMTU exceptions 1
248 pmtu_ipv6_gue6_exception IPv6 o 248 pmtu_ipv6_gue6_exception IPv6 over gue6: PMTU exceptions 1
249 pmtu_ipv4_ipv4_exception IPv4 o 249 pmtu_ipv4_ipv4_exception IPv4 over IPv4: PMTU exceptions 1
250 pmtu_ipv6_ipv4_exception IPv6 o 250 pmtu_ipv6_ipv4_exception IPv6 over IPv4: PMTU exceptions 1
251 pmtu_ipv4_ipv6_exception IPv4 o 251 pmtu_ipv4_ipv6_exception IPv4 over IPv6: PMTU exceptions 1
252 pmtu_ipv6_ipv6_exception IPv6 o 252 pmtu_ipv6_ipv6_exception IPv6 over IPv6: PMTU exceptions 1
253 pmtu_vti6_exception vti6: 253 pmtu_vti6_exception vti6: PMTU exceptions 0
254 pmtu_vti4_exception vti4: 254 pmtu_vti4_exception vti4: PMTU exceptions 0
255 pmtu_vti6_udp_exception vti6: 255 pmtu_vti6_udp_exception vti6: PMTU exceptions (ESP-in-UDP) 0
256 pmtu_vti4_udp_exception vti4: 256 pmtu_vti4_udp_exception vti4: PMTU exceptions (ESP-in-UDP) 0
257 pmtu_vti6_udp_routed_exception vti6: 257 pmtu_vti6_udp_routed_exception vti6: PMTU exceptions, routed (ESP-in-UDP) 0
258 pmtu_vti4_udp_routed_exception vti4: 258 pmtu_vti4_udp_routed_exception vti4: PMTU exceptions, routed (ESP-in-UDP) 0
259 pmtu_vti4_default_mtu vti4: 259 pmtu_vti4_default_mtu vti4: default MTU assignment 0
260 pmtu_vti6_default_mtu vti6: 260 pmtu_vti6_default_mtu vti6: default MTU assignment 0
261 pmtu_vti4_link_add_mtu vti4: 261 pmtu_vti4_link_add_mtu vti4: MTU setting on link creation 0
262 pmtu_vti6_link_add_mtu vti6: 262 pmtu_vti6_link_add_mtu vti6: MTU setting on link creation 0
263 pmtu_vti6_link_change_mtu vti6: 263 pmtu_vti6_link_change_mtu vti6: MTU changes on link changes 0
264 cleanup_ipv4_exception ipv4: 264 cleanup_ipv4_exception ipv4: cleanup of cached exceptions 1
265 cleanup_ipv6_exception ipv6: 265 cleanup_ipv6_exception ipv6: cleanup of cached exceptions 1
266 list_flush_ipv4_exception ipv4: 266 list_flush_ipv4_exception ipv4: list and flush cached exceptions 1
267 list_flush_ipv6_exception ipv6: 267 list_flush_ipv6_exception ipv6: list and flush cached exceptions 1
268 pmtu_ipv4_route_change ipv4: 268 pmtu_ipv4_route_change ipv4: PMTU exception w/route replace 1
269 pmtu_ipv6_route_change ipv6: 269 pmtu_ipv6_route_change ipv6: PMTU exception w/route replace 1"
270 270
271 # Addressing and routing for tests with router 271 # Addressing and routing for tests with routers: four network segments, with
272 # index SEGMENT between 1 and 4, a common pref 272 # 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 273 # identifier ID, which is 1 for hosts (A and B), 2 for routers (R1 and R2).
274 # Addresses are: 274 # Addresses are:
275 # - IPv4: PREFIX4.SEGMENT.ID (/24) 275 # - IPv4: PREFIX4.SEGMENT.ID (/24)
276 # - IPv6: PREFIX6:SEGMENT::ID (/64) 276 # - IPv6: PREFIX6:SEGMENT::ID (/64)
277 prefix4="10.0" 277 prefix4="10.0"
278 prefix6="fc00" 278 prefix6="fc00"
279 a_r1=1 279 a_r1=1
280 a_r2=2 280 a_r2=2
281 b_r1=3 281 b_r1=3
282 b_r2=4 282 b_r2=4
283 # ns peer segment 283 # ns peer segment
284 routing_addrs=" 284 routing_addrs="
285 A R1 ${a_r1} 285 A R1 ${a_r1}
286 A R2 ${a_r2} 286 A R2 ${a_r2}
287 B R1 ${b_r1} 287 B R1 ${b_r1}
288 B R2 ${b_r2} 288 B R2 ${b_r2}
289 " 289 "
290 # Traffic from A to B goes through R1 by defau 290 # 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. 291 # B's address on the b_r2 segment.
292 # Traffic from B to A goes through R1. 292 # Traffic from B to A goes through R1.
293 # ns destination gatewa 293 # ns destination gateway
294 routes=" 294 routes="
295 A default ${pref 295 A default ${prefix4}.${a_r1}.2
296 A ${prefix4}.${b_r2}.1 ${pref 296 A ${prefix4}.${b_r2}.1 ${prefix4}.${a_r2}.2
297 B default ${pref 297 B default ${prefix4}.${b_r1}.2
298 298
299 A default ${pref 299 A default ${prefix6}:${a_r1}::2
300 A ${prefix6}:${b_r2}::1 ${pref 300 A ${prefix6}:${b_r2}::1 ${prefix6}:${a_r2}::2
301 B default ${pref 301 B default ${prefix6}:${b_r1}::2
302 " 302 "
303 USE_NH="no" 303 USE_NH="no"
304 # ns family nh id destination 304 # ns family nh id destination gateway
305 nexthops=" 305 nexthops="
306 A 4 41 ${prefix4}.${a 306 A 4 41 ${prefix4}.${a_r1}.2 veth_A-R1
307 A 4 42 ${prefix4}.${a 307 A 4 42 ${prefix4}.${a_r2}.2 veth_A-R2
308 B 4 41 ${prefix4}.${b 308 B 4 41 ${prefix4}.${b_r1}.2 veth_B-R1
309 309
310 A 6 61 ${prefix6}:${a 310 A 6 61 ${prefix6}:${a_r1}::2 veth_A-R1
311 A 6 62 ${prefix6}:${a 311 A 6 62 ${prefix6}:${a_r2}::2 veth_A-R2
312 B 6 61 ${prefix6}:${b 312 B 6 61 ${prefix6}:${b_r1}::2 veth_B-R1
313 " 313 "
314 314
315 # nexthop id correlates to id in nexthops conf 315 # nexthop id correlates to id in nexthops config above
316 # ns family prefix 316 # ns family prefix nh id
317 routes_nh=" 317 routes_nh="
318 A 4 default 318 A 4 default 41
319 A 4 ${prefix4}.${b_r2}.1 319 A 4 ${prefix4}.${b_r2}.1 42
320 B 4 default 320 B 4 default 41
321 321
322 A 6 default 322 A 6 default 61
323 A 6 ${prefix6}:${b_r2}::1 323 A 6 ${prefix6}:${b_r2}::1 62
324 B 6 default 324 B 6 default 61
325 " 325 "
326 326
327 policy_mark=0x04 327 policy_mark=0x04
328 rt_table=main 328 rt_table=main
329 329
330 veth4_a_addr="192.168.1.1" 330 veth4_a_addr="192.168.1.1"
331 veth4_b_addr="192.168.1.2" 331 veth4_b_addr="192.168.1.2"
332 veth4_c_addr="192.168.2.10" 332 veth4_c_addr="192.168.2.10"
333 veth4_mask="24" 333 veth4_mask="24"
334 veth6_a_addr="fd00:1::a" 334 veth6_a_addr="fd00:1::a"
335 veth6_b_addr="fd00:1::b" 335 veth6_b_addr="fd00:1::b"
336 veth6_c_addr="fd00:2::c" 336 veth6_c_addr="fd00:2::c"
337 veth6_mask="64" 337 veth6_mask="64"
338 338
339 tunnel4_a_addr="192.168.2.1" 339 tunnel4_a_addr="192.168.2.1"
340 tunnel4_b_addr="192.168.2.2" 340 tunnel4_b_addr="192.168.2.2"
341 tunnel4_mask="24" 341 tunnel4_mask="24"
342 tunnel6_a_addr="fd00:2::a" 342 tunnel6_a_addr="fd00:2::a"
343 tunnel6_b_addr="fd00:2::b" 343 tunnel6_b_addr="fd00:2::b"
344 tunnel6_mask="64" 344 tunnel6_mask="64"
345 345
346 dummy6_0_prefix="fc00:1000::" 346 dummy6_0_prefix="fc00:1000::"
347 dummy6_1_prefix="fc00:1001::" 347 dummy6_1_prefix="fc00:1001::"
348 dummy6_mask="64" 348 dummy6_mask="64"
349 349
350 err_buf= 350 err_buf=
351 tcpdump_pids= 351 tcpdump_pids=
352 nettest_pids= 352 nettest_pids=
353 socat_pids= 353 socat_pids=
354 tmpoutfile= 354 tmpoutfile=
355 355
356 err() { 356 err() {
357 err_buf="${err_buf}${1} 357 err_buf="${err_buf}${1}
358 " 358 "
359 } 359 }
360 360
361 err_flush() { 361 err_flush() {
362 echo -n "${err_buf}" 362 echo -n "${err_buf}"
363 err_buf= 363 err_buf=
364 } 364 }
365 365
366 run_cmd() { 366 run_cmd() {
367 cmd="$*" 367 cmd="$*"
368 368
369 if [ "$VERBOSE" = "1" ]; then 369 if [ "$VERBOSE" = "1" ]; then
370 printf " COMMAND: $cmd\n" 370 printf " COMMAND: $cmd\n"
371 fi 371 fi
372 372
373 out="$($cmd 2>&1)" 373 out="$($cmd 2>&1)"
374 rc=$? 374 rc=$?
375 if [ "$VERBOSE" = "1" -a -n "$out" ]; 375 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
376 echo " $out" 376 echo " $out"
377 echo 377 echo
378 fi 378 fi
379 379
380 return $rc 380 return $rc
381 } 381 }
382 382
383 run_cmd_bg() { 383 run_cmd_bg() {
384 cmd="$*" 384 cmd="$*"
385 385
386 if [ "$VERBOSE" = "1" ]; then 386 if [ "$VERBOSE" = "1" ]; then
387 printf " COMMAND: %s &\n" " 387 printf " COMMAND: %s &\n" "${cmd}"
388 fi 388 fi
389 389
390 $cmd 2>&1 & 390 $cmd 2>&1 &
391 } 391 }
392 392
393 # Find the auto-generated name for this namesp 393 # Find the auto-generated name for this namespace
394 nsname() { 394 nsname() {
395 eval echo \$NS_$1 395 eval echo \$NS_$1
396 } 396 }
397 397
398 setup_fou_or_gue() { 398 setup_fou_or_gue() {
399 outer="${1}" 399 outer="${1}"
400 inner="${2}" 400 inner="${2}"
401 encap="${3}" 401 encap="${3}"
402 402
403 if [ "${outer}" = "4" ]; then 403 if [ "${outer}" = "4" ]; then
404 modprobe fou || return $ksft_s 404 modprobe fou || return $ksft_skip
405 a_addr="${prefix4}.${a_r1}.1" 405 a_addr="${prefix4}.${a_r1}.1"
406 b_addr="${prefix4}.${b_r1}.1" 406 b_addr="${prefix4}.${b_r1}.1"
407 if [ "${inner}" = "4" ]; then 407 if [ "${inner}" = "4" ]; then
408 type="ipip" 408 type="ipip"
409 ipproto="4" 409 ipproto="4"
410 else 410 else
411 type="sit" 411 type="sit"
412 ipproto="41" 412 ipproto="41"
413 fi 413 fi
414 else 414 else
415 modprobe fou6 || return $ksft_ 415 modprobe fou6 || return $ksft_skip
416 a_addr="${prefix6}:${a_r1}::1" 416 a_addr="${prefix6}:${a_r1}::1"
417 b_addr="${prefix6}:${b_r1}::1" 417 b_addr="${prefix6}:${b_r1}::1"
418 if [ "${inner}" = "4" ]; then 418 if [ "${inner}" = "4" ]; then
419 type="ip6tnl" 419 type="ip6tnl"
420 mode="mode ipip6" 420 mode="mode ipip6"
421 ipproto="4 -6" 421 ipproto="4 -6"
422 else 422 else
423 type="ip6tnl" 423 type="ip6tnl"
424 mode="mode ip6ip6" 424 mode="mode ip6ip6"
425 ipproto="41 -6" 425 ipproto="41 -6"
426 fi 426 fi
427 fi 427 fi
428 428
429 run_cmd ${ns_a} ip fou add port 5555 i 429 run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return $ksft_skip
430 run_cmd ${ns_a} ip link add ${encap}_a 430 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
431 431
432 run_cmd ${ns_b} ip fou add port 5556 i 432 run_cmd ${ns_b} ip fou add port 5556 ipproto ${ipproto}
433 run_cmd ${ns_b} ip link add ${encap}_b 433 run_cmd ${ns_b} ip link add ${encap}_b type ${type} ${mode} local ${b_addr} remote ${a_addr} encap ${encap} encap-sport auto encap-dport 5555
434 434
435 if [ "${inner}" = "4" ]; then 435 if [ "${inner}" = "4" ]; then
436 run_cmd ${ns_a} ip addr add ${ 436 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${encap}_a
437 run_cmd ${ns_b} ip addr add ${ 437 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${encap}_b
438 else 438 else
439 run_cmd ${ns_a} ip addr add ${ 439 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${encap}_a
440 run_cmd ${ns_b} ip addr add ${ 440 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${encap}_b
441 fi 441 fi
442 442
443 run_cmd ${ns_a} ip link set ${encap}_a 443 run_cmd ${ns_a} ip link set ${encap}_a up
444 run_cmd ${ns_b} ip link set ${encap}_b 444 run_cmd ${ns_b} ip link set ${encap}_b up
445 } 445 }
446 446
447 setup_fou44() { 447 setup_fou44() {
448 setup_fou_or_gue 4 4 fou 448 setup_fou_or_gue 4 4 fou
449 } 449 }
450 450
451 setup_fou46() { 451 setup_fou46() {
452 setup_fou_or_gue 4 6 fou 452 setup_fou_or_gue 4 6 fou
453 } 453 }
454 454
455 setup_fou64() { 455 setup_fou64() {
456 setup_fou_or_gue 6 4 fou 456 setup_fou_or_gue 6 4 fou
457 } 457 }
458 458
459 setup_fou66() { 459 setup_fou66() {
460 setup_fou_or_gue 6 6 fou 460 setup_fou_or_gue 6 6 fou
461 } 461 }
462 462
463 setup_gue44() { 463 setup_gue44() {
464 setup_fou_or_gue 4 4 gue 464 setup_fou_or_gue 4 4 gue
465 } 465 }
466 466
467 setup_gue46() { 467 setup_gue46() {
468 setup_fou_or_gue 4 6 gue 468 setup_fou_or_gue 4 6 gue
469 } 469 }
470 470
471 setup_gue64() { 471 setup_gue64() {
472 setup_fou_or_gue 6 4 gue 472 setup_fou_or_gue 6 4 gue
473 } 473 }
474 474
475 setup_gue66() { 475 setup_gue66() {
476 setup_fou_or_gue 6 6 gue 476 setup_fou_or_gue 6 6 gue
477 } 477 }
478 478
479 setup_ipvX_over_ipvY() { 479 setup_ipvX_over_ipvY() {
480 inner=${1} 480 inner=${1}
481 outer=${2} 481 outer=${2}
482 482
483 if [ "${outer}" -eq 4 ]; then 483 if [ "${outer}" -eq 4 ]; then
484 a_addr="${prefix4}.${a_r1}.1" 484 a_addr="${prefix4}.${a_r1}.1"
485 b_addr="${prefix4}.${b_r1}.1" 485 b_addr="${prefix4}.${b_r1}.1"
486 if [ "${inner}" -eq 4 ]; then 486 if [ "${inner}" -eq 4 ]; then
487 type="ipip" 487 type="ipip"
488 mode="ipip" 488 mode="ipip"
489 else 489 else
490 type="sit" 490 type="sit"
491 mode="ip6ip" 491 mode="ip6ip"
492 fi 492 fi
493 else 493 else
494 a_addr="${prefix6}:${a_r1}::1" 494 a_addr="${prefix6}:${a_r1}::1"
495 b_addr="${prefix6}:${b_r1}::1" 495 b_addr="${prefix6}:${b_r1}::1"
496 type="ip6tnl" 496 type="ip6tnl"
497 if [ "${inner}" -eq 4 ]; then 497 if [ "${inner}" -eq 4 ]; then
498 mode="ipip6" 498 mode="ipip6"
499 else 499 else
500 mode="ip6ip6" 500 mode="ip6ip6"
501 fi 501 fi
502 fi 502 fi
503 503
504 run_cmd ${ns_a} ip link add ip_a type 504 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 505 run_cmd ${ns_b} ip link add ip_b type ${type} local ${b_addr} remote ${a_addr} mode ${mode}
506 506
507 run_cmd ${ns_a} ip link set ip_a up 507 run_cmd ${ns_a} ip link set ip_a up
508 run_cmd ${ns_b} ip link set ip_b up 508 run_cmd ${ns_b} ip link set ip_b up
509 509
510 if [ "${inner}" = "4" ]; then 510 if [ "${inner}" = "4" ]; then
511 run_cmd ${ns_a} ip addr add ${ 511 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ip_a
512 run_cmd ${ns_b} ip addr add ${ 512 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ip_b
513 else 513 else
514 run_cmd ${ns_a} ip addr add ${ 514 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ip_a
515 run_cmd ${ns_b} ip addr add ${ 515 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ip_b
516 fi 516 fi
517 } 517 }
518 518
519 setup_ip4ip4() { 519 setup_ip4ip4() {
520 setup_ipvX_over_ipvY 4 4 520 setup_ipvX_over_ipvY 4 4
521 } 521 }
522 522
523 setup_ip6ip4() { 523 setup_ip6ip4() {
524 setup_ipvX_over_ipvY 6 4 524 setup_ipvX_over_ipvY 6 4
525 } 525 }
526 526
527 setup_ip4ip6() { 527 setup_ip4ip6() {
528 setup_ipvX_over_ipvY 4 6 528 setup_ipvX_over_ipvY 4 6
529 } 529 }
530 530
531 setup_ip6ip6() { 531 setup_ip6ip6() {
532 setup_ipvX_over_ipvY 6 6 532 setup_ipvX_over_ipvY 6 6
533 } 533 }
534 534
535 setup_namespaces() { 535 setup_namespaces() {
536 setup_ns NS_A NS_B NS_C NS_R1 NS_R2 536 setup_ns NS_A NS_B NS_C NS_R1 NS_R2
537 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_ 537 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
538 # Disable DAD, so that we don' 538 # Disable DAD, so that we don't have to wait to use the
539 # configured IPv6 addresses 539 # configured IPv6 addresses
540 ip netns exec ${n} sysctl -q n 540 ip netns exec ${n} sysctl -q net/ipv6/conf/default/accept_dad=0
541 done 541 done
542 ns_a="ip netns exec ${NS_A}" 542 ns_a="ip netns exec ${NS_A}"
543 ns_b="ip netns exec ${NS_B}" 543 ns_b="ip netns exec ${NS_B}"
544 ns_c="ip netns exec ${NS_C}" 544 ns_c="ip netns exec ${NS_C}"
545 ns_r1="ip netns exec ${NS_R1}" 545 ns_r1="ip netns exec ${NS_R1}"
546 ns_r2="ip netns exec ${NS_R2}" 546 ns_r2="ip netns exec ${NS_R2}"
547 } 547 }
548 548
549 setup_veth() { 549 setup_veth() {
550 run_cmd ${ns_a} ip link add veth_a typ 550 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 551 run_cmd ${ns_a} ip link set veth_b netns ${NS_B}
552 552
553 run_cmd ${ns_a} ip addr add ${veth4_a_ 553 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_ 554 run_cmd ${ns_b} ip addr add ${veth4_b_addr}/${veth4_mask} dev veth_b
555 555
556 run_cmd ${ns_a} ip addr add ${veth6_a_ 556 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_ 557 run_cmd ${ns_b} ip addr add ${veth6_b_addr}/${veth6_mask} dev veth_b
558 558
559 run_cmd ${ns_a} ip link set veth_a up 559 run_cmd ${ns_a} ip link set veth_a up
560 run_cmd ${ns_b} ip link set veth_b up 560 run_cmd ${ns_b} ip link set veth_b up
561 } 561 }
562 562
563 setup_vti() { 563 setup_vti() {
564 proto=${1} 564 proto=${1}
565 veth_a_addr="${2}" 565 veth_a_addr="${2}"
566 veth_b_addr="${3}" 566 veth_b_addr="${3}"
567 vti_a_addr="${4}" 567 vti_a_addr="${4}"
568 vti_b_addr="${5}" 568 vti_b_addr="${5}"
569 vti_mask=${6} 569 vti_mask=${6}
570 570
571 [ ${proto} -eq 6 ] && vti_type="vti6" 571 [ ${proto} -eq 6 ] && vti_type="vti6" || vti_type="vti"
572 572
573 run_cmd ${ns_a} ip link add vti${proto 573 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 574 run_cmd ${ns_b} ip link add vti${proto}_b type ${vti_type} local ${veth_b_addr} remote ${veth_a_addr} key 10
575 575
576 run_cmd ${ns_a} ip addr add ${vti_a_ad 576 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 577 run_cmd ${ns_b} ip addr add ${vti_b_addr}/${vti_mask} dev vti${proto}_b
578 578
579 run_cmd ${ns_a} ip link set vti${proto 579 run_cmd ${ns_a} ip link set vti${proto}_a up
580 run_cmd ${ns_b} ip link set vti${proto 580 run_cmd ${ns_b} ip link set vti${proto}_b up
581 } 581 }
582 582
583 setup_vti4() { 583 setup_vti4() {
584 setup_vti 4 ${veth4_a_addr} ${veth4_b_ 584 setup_vti 4 ${veth4_a_addr} ${veth4_b_addr} ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
585 } 585 }
586 586
587 setup_vti6() { 587 setup_vti6() {
588 setup_vti 6 ${veth6_a_addr} ${veth6_b_ 588 setup_vti 6 ${veth6_a_addr} ${veth6_b_addr} ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
589 } 589 }
590 590
591 setup_vti4routed() { 591 setup_vti4routed() {
592 setup_vti 4 ${prefix4}.${a_r1}.1 ${pre 592 setup_vti 4 ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
593 } 593 }
594 594
595 setup_vti6routed() { 595 setup_vti6routed() {
596 setup_vti 6 ${prefix6}:${a_r1}::1 ${pr 596 setup_vti 6 ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
597 } 597 }
598 598
599 setup_vxlan_or_geneve() { 599 setup_vxlan_or_geneve() {
600 type="${1}" 600 type="${1}"
601 a_addr="${2}" 601 a_addr="${2}"
602 b_addr="${3}" 602 b_addr="${3}"
603 opts="${4}" 603 opts="${4}"
604 br_if_a="${5}" 604 br_if_a="${5}"
605 605
606 if [ "${type}" = "vxlan" ]; then 606 if [ "${type}" = "vxlan" ]; then
607 opts="${opts} ttl 64 dstport 4 607 opts="${opts} ttl 64 dstport 4789"
608 opts_a="local ${a_addr}" 608 opts_a="local ${a_addr}"
609 opts_b="local ${b_addr}" 609 opts_b="local ${b_addr}"
610 else 610 else
611 opts_a="" 611 opts_a=""
612 opts_b="" 612 opts_b=""
613 fi 613 fi
614 614
615 run_cmd ${ns_a} ip link add ${type}_a 615 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 616 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts}
617 617
618 if [ -n "${br_if_a}" ]; then 618 if [ -n "${br_if_a}" ]; then
619 run_cmd ${ns_a} ip addr add ${ 619 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${br_if_a}
620 run_cmd ${ns_a} ip addr add ${ 620 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${br_if_a}
621 run_cmd ${ns_a} ip link set ${ 621 run_cmd ${ns_a} ip link set ${type}_a master ${br_if_a}
622 else 622 else
623 run_cmd ${ns_a} ip addr add ${ 623 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${type}_a
624 run_cmd ${ns_a} ip addr add ${ 624 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${type}_a
625 fi 625 fi
626 626
627 run_cmd ${ns_b} ip addr add ${tunnel4_ 627 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
628 run_cmd ${ns_b} ip addr add ${tunnel6_ 628 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
629 629
630 run_cmd ${ns_a} ip link set ${type}_a 630 run_cmd ${ns_a} ip link set ${type}_a up
631 run_cmd ${ns_b} ip link set ${type}_b 631 run_cmd ${ns_b} ip link set ${type}_b up
632 } 632 }
633 633
634 setup_geneve4() { 634 setup_geneve4() {
635 setup_vxlan_or_geneve geneve ${prefix4 635 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
636 } 636 }
637 637
638 setup_vxlan4() { 638 setup_vxlan4() {
639 setup_vxlan_or_geneve vxlan ${prefix4 639 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
640 } 640 }
641 641
642 setup_geneve6() { 642 setup_geneve6() {
643 setup_vxlan_or_geneve geneve ${prefix6 643 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
644 } 644 }
645 645
646 setup_vxlan6() { 646 setup_vxlan6() {
647 setup_vxlan_or_geneve vxlan ${prefix6 647 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
648 } 648 }
649 649
650 setup_bridged_geneve4() { 650 setup_bridged_geneve4() {
651 setup_vxlan_or_geneve geneve ${prefix4 651 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
652 } 652 }
653 653
654 setup_bridged_vxlan4() { 654 setup_bridged_vxlan4() {
655 setup_vxlan_or_geneve vxlan ${prefix4 655 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
656 } 656 }
657 657
658 setup_bridged_geneve6() { 658 setup_bridged_geneve6() {
659 setup_vxlan_or_geneve geneve ${prefix6 659 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
660 } 660 }
661 661
662 setup_bridged_vxlan6() { 662 setup_bridged_vxlan6() {
663 setup_vxlan_or_geneve vxlan ${prefix6 663 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
664 } 664 }
665 665
666 setup_xfrm() { 666 setup_xfrm() {
667 proto=${1} 667 proto=${1}
668 veth_a_addr="${2}" 668 veth_a_addr="${2}"
669 veth_b_addr="${3}" 669 veth_b_addr="${3}"
670 encap=${4} 670 encap=${4}
671 671
672 run_cmd ${ns_a} ip -${proto} xfrm stat 672 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 ${encap} || return 1
673 run_cmd ${ns_a} ip -${proto} xfrm stat 673 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 ${encap}
674 run_cmd ${ns_a} ip -${proto} xfrm poli 674 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 675 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
676 676
677 run_cmd ${ns_b} ip -${proto} xfrm stat 677 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 ${encap}
678 run_cmd ${ns_b} ip -${proto} xfrm stat 678 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 ${encap}
679 run_cmd ${ns_b} ip -${proto} xfrm poli 679 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 680 run_cmd ${ns_b} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
681 } 681 }
682 682
683 setup_nettest_xfrm() { 683 setup_nettest_xfrm() {
684 if ! which nettest >/dev/null; then 684 if ! which nettest >/dev/null; then
685 PATH=$PWD:$PATH 685 PATH=$PWD:$PATH
686 if ! which nettest >/dev/null; 686 if ! which nettest >/dev/null; then
687 echo "'nettest' comman 687 echo "'nettest' command not found; skipping tests"
688 return 1 688 return 1
689 fi 689 fi
690 fi 690 fi
691 691
692 [ ${1} -eq 6 ] && proto="-6" || proto= 692 [ ${1} -eq 6 ] && proto="-6" || proto=""
693 port=${2} 693 port=${2}
694 694
695 run_cmd_bg "${ns_a}" nettest "${proto} 695 run_cmd_bg "${ns_a}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
696 nettest_pids="${nettest_pids} $!" 696 nettest_pids="${nettest_pids} $!"
697 697
698 run_cmd_bg "${ns_b}" nettest "${proto} 698 run_cmd_bg "${ns_b}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
699 nettest_pids="${nettest_pids} $!" 699 nettest_pids="${nettest_pids} $!"
700 } 700 }
701 701
702 setup_xfrm4() { 702 setup_xfrm4() {
703 setup_xfrm 4 ${veth4_a_addr} ${veth4_b 703 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr}
704 } 704 }
705 705
706 setup_xfrm6() { 706 setup_xfrm6() {
707 setup_xfrm 6 ${veth6_a_addr} ${veth6_b 707 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr}
708 } 708 }
709 709
710 setup_xfrm4udp() { 710 setup_xfrm4udp() {
711 setup_xfrm 4 ${veth4_a_addr} ${veth4_b 711 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr} "encap espinudp 4500 4500 0.0.0.0" && \
712 setup_nettest_xfrm 4 4500 712 setup_nettest_xfrm 4 4500
713 } 713 }
714 714
715 setup_xfrm6udp() { 715 setup_xfrm6udp() {
716 setup_xfrm 6 ${veth6_a_addr} ${veth6_b 716 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr} "encap espinudp 4500 4500 0.0.0.0" && \
717 setup_nettest_xfrm 6 4500 717 setup_nettest_xfrm 6 4500
718 } 718 }
719 719
720 setup_xfrm4udprouted() { 720 setup_xfrm4udprouted() {
721 setup_xfrm 4 ${prefix4}.${a_r1}.1 ${pr 721 setup_xfrm 4 ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "encap espinudp 4500 4500 0.0.0.0" && \
722 setup_nettest_xfrm 4 4500 722 setup_nettest_xfrm 4 4500
723 } 723 }
724 724
725 setup_xfrm6udprouted() { 725 setup_xfrm6udprouted() {
726 setup_xfrm 6 ${prefix6}:${a_r1}::1 ${p 726 setup_xfrm 6 ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "encap espinudp 4500 4500 0.0.0.0" && \
727 setup_nettest_xfrm 6 4500 727 setup_nettest_xfrm 6 4500
728 } 728 }
729 729
730 setup_routing_old() { 730 setup_routing_old() {
731 for i in ${routes}; do 731 for i in ${routes}; do
732 [ "${ns}" = "" ] && ns= 732 [ "${ns}" = "" ] && ns="${i}" && continue
733 [ "${addr}" = "" ] && add 733 [ "${addr}" = "" ] && addr="${i}" && continue
734 [ "${gw}" = "" ] && gw= 734 [ "${gw}" = "" ] && gw="${i}"
735 735
736 ns_name="$(nsname ${ns})" 736 ns_name="$(nsname ${ns})"
737 737
738 ip -n "${ns_name}" route add " 738 ip -n "${ns_name}" route add "${addr}" table "${rt_table}" via "${gw}"
739 739
740 ns=""; addr=""; gw="" 740 ns=""; addr=""; gw=""
741 done 741 done
742 } 742 }
743 743
744 setup_routing_new() { 744 setup_routing_new() {
745 for i in ${nexthops}; do 745 for i in ${nexthops}; do
746 [ "${ns}" = "" ] && ns= 746 [ "${ns}" = "" ] && ns="${i}" && continue
747 [ "${fam}" = "" ] && fam 747 [ "${fam}" = "" ] && fam="${i}" && continue
748 [ "${nhid}" = "" ] && nhi 748 [ "${nhid}" = "" ] && nhid="${i}" && continue
749 [ "${gw}" = "" ] && gw= 749 [ "${gw}" = "" ] && gw="${i}" && continue
750 [ "${dev}" = "" ] && dev 750 [ "${dev}" = "" ] && dev="${i}"
751 751
752 ns_name="$(nsname ${ns})" 752 ns_name="$(nsname ${ns})"
753 753
754 ip -n ${ns_name} -${fam} nexth 754 ip -n ${ns_name} -${fam} nexthop add id ${nhid} via ${gw} dev ${dev}
755 755
756 ns=""; fam=""; nhid=""; gw=""; 756 ns=""; fam=""; nhid=""; gw=""; dev=""
757 757
758 done 758 done
759 759
760 for i in ${routes_nh}; do 760 for i in ${routes_nh}; do
761 [ "${ns}" = "" ] && ns= 761 [ "${ns}" = "" ] && ns="${i}" && continue
762 [ "${fam}" = "" ] && fam 762 [ "${fam}" = "" ] && fam="${i}" && continue
763 [ "${addr}" = "" ] && add 763 [ "${addr}" = "" ] && addr="${i}" && continue
764 [ "${nhid}" = "" ] && nhi 764 [ "${nhid}" = "" ] && nhid="${i}"
765 765
766 ns_name="$(nsname ${ns})" 766 ns_name="$(nsname ${ns})"
767 767
768 ip -n "${ns_name}" -"${fam}" r 768 ip -n "${ns_name}" -"${fam}" route add "${addr}" table "${rt_table}" nhid "${nhid}"
769 769
770 ns=""; fam=""; addr=""; nhid=" 770 ns=""; fam=""; addr=""; nhid=""
771 done 771 done
772 } 772 }
773 773
774 setup_routing() { 774 setup_routing() {
775 for i in ${NS_R1} ${NS_R2}; do 775 for i in ${NS_R1} ${NS_R2}; do
776 ip netns exec ${i} sysctl -q n 776 ip netns exec ${i} sysctl -q net/ipv4/ip_forward=1
777 ip netns exec ${i} sysctl -q n 777 ip netns exec ${i} sysctl -q net/ipv6/conf/all/forwarding=1
778 done 778 done
779 779
780 for i in ${routing_addrs}; do 780 for i in ${routing_addrs}; do
781 [ "${ns}" = "" ] && ns= 781 [ "${ns}" = "" ] && ns="${i}" && continue
782 [ "${peer}" = "" ] && pee 782 [ "${peer}" = "" ] && peer="${i}" && continue
783 [ "${segment}" = "" ] && seg 783 [ "${segment}" = "" ] && segment="${i}"
784 784
785 ns_name="$(nsname ${ns})" 785 ns_name="$(nsname ${ns})"
786 peer_name="$(nsname ${peer})" 786 peer_name="$(nsname ${peer})"
787 if="veth_${ns}-${peer}" 787 if="veth_${ns}-${peer}"
788 ifpeer="veth_${peer}-${ns}" 788 ifpeer="veth_${peer}-${ns}"
789 789
790 # Create veth links 790 # Create veth links
791 ip link add ${if} up netns ${n 791 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 792 ip -n ${peer_name} link set dev ${ifpeer} up
793 793
794 # Add addresses 794 # Add addresses
795 ip -n ${ns_name} addr add ${ 795 ip -n ${ns_name} addr add ${prefix4}.${segment}.1/24 dev ${if}
796 ip -n ${ns_name} addr add ${ 796 ip -n ${ns_name} addr add ${prefix6}:${segment}::1/64 dev ${if}
797 797
798 ip -n ${peer_name} addr add ${ 798 ip -n ${peer_name} addr add ${prefix4}.${segment}.2/24 dev ${ifpeer}
799 ip -n ${peer_name} addr add ${ 799 ip -n ${peer_name} addr add ${prefix6}:${segment}::2/64 dev ${ifpeer}
800 800
801 ns=""; peer=""; segment="" 801 ns=""; peer=""; segment=""
802 done 802 done
803 803
804 if [ "$USE_NH" = "yes" ]; then 804 if [ "$USE_NH" = "yes" ]; then
805 setup_routing_new 805 setup_routing_new
806 else 806 else
807 setup_routing_old 807 setup_routing_old
808 fi 808 fi
809 809
810 return 0 810 return 0
811 } 811 }
812 812
813 setup_policy_routing() { 813 setup_policy_routing() {
814 setup_routing 814 setup_routing
815 815
816 ip -netns "${NS_A}" -4 rule add dsfiel 816 ip -netns "${NS_A}" -4 rule add dsfield "${policy_mark}" \
817 table "${rt_table}" 817 table "${rt_table}"
818 818
819 # Set the IPv4 Don't Fragment bit with 819 # Set the IPv4 Don't Fragment bit with tc, since socat doesn't seem to
820 # have an option do to it. 820 # have an option do to it.
821 tc -netns "${NS_A}" qdisc replace dev 821 tc -netns "${NS_A}" qdisc replace dev veth_A-R1 root prio
822 tc -netns "${NS_A}" qdisc replace dev 822 tc -netns "${NS_A}" qdisc replace dev veth_A-R2 root prio
823 tc -netns "${NS_A}" filter add dev vet 823 tc -netns "${NS_A}" filter add dev veth_A-R1 \
824 protocol ipv4 flower ip_proto 824 protocol ipv4 flower ip_proto udp \
825 action pedit ex munge ip df se 825 action pedit ex munge ip df set 0x40 pipe csum ip and udp
826 tc -netns "${NS_A}" filter add dev vet 826 tc -netns "${NS_A}" filter add dev veth_A-R2 \
827 protocol ipv4 flower ip_proto 827 protocol ipv4 flower ip_proto udp \
828 action pedit ex munge ip df se 828 action pedit ex munge ip df set 0x40 pipe csum ip and udp
829 } 829 }
830 830
831 setup_bridge() { 831 setup_bridge() {
832 run_cmd ${ns_a} ip link add br0 type b 832 run_cmd ${ns_a} ip link add br0 type bridge || return $ksft_skip
833 run_cmd ${ns_a} ip link set br0 up 833 run_cmd ${ns_a} ip link set br0 up
834 834
835 run_cmd ${ns_c} ip link add veth_C-A t 835 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 836 run_cmd ${ns_c} ip link set veth_A-C netns ${NS_A}
837 837
838 run_cmd ${ns_a} ip link set veth_A-C u 838 run_cmd ${ns_a} ip link set veth_A-C up
839 run_cmd ${ns_c} ip link set veth_C-A u 839 run_cmd ${ns_c} ip link set veth_C-A up
840 run_cmd ${ns_c} ip addr add ${veth4_c_ 840 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_ 841 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 842 run_cmd ${ns_a} ip link set veth_A-C master br0
843 } 843 }
844 844
845 setup_ovs_via_internal_utility() { 845 setup_ovs_via_internal_utility() {
846 type="${1}" 846 type="${1}"
847 a_addr="${2}" 847 a_addr="${2}"
848 b_addr="${3}" 848 b_addr="${3}"
849 dport="${4}" 849 dport="${4}"
850 850
851 run_cmd python3 ./openvswitch/ovs-dpct 851 run_cmd python3 ./openvswitch/ovs-dpctl.py add-if ovs_br0 ${type}_a -t ${type} || return 1
852 852
853 ports=$(python3 ./openvswitch/ovs-dpct 853 ports=$(python3 ./openvswitch/ovs-dpctl.py show)
854 br0_port=$(echo "$ports" | grep -E "\s 854 br0_port=$(echo "$ports" | grep -E "\sovs_br0" | sed -e 's@port @@' | cut -d: -f1 | xargs)
855 type_a_port=$(echo "$ports" | grep ${t 855 type_a_port=$(echo "$ports" | grep ${type}_a | sed -e 's@port @@' | cut -d: -f1 | xargs)
856 veth_a_port=$(echo "$ports" | grep vet 856 veth_a_port=$(echo "$ports" | grep veth_A | sed -e 's@port @@' | cut -d: -f1 | xargs)
857 857
858 v4_a_tun="${prefix4}.${a_r1}.1" 858 v4_a_tun="${prefix4}.${a_r1}.1"
859 v4_b_tun="${prefix4}.${b_r1}.1" 859 v4_b_tun="${prefix4}.${b_r1}.1"
860 860
861 v6_a_tun="${prefix6}:${a_r1}::1" 861 v6_a_tun="${prefix6}:${a_r1}::1"
862 v6_b_tun="${prefix6}:${b_r1}::1" 862 v6_b_tun="${prefix6}:${b_r1}::1"
863 863
864 if [ "${v4_a_tun}" = "${a_addr}" ]; th 864 if [ "${v4_a_tun}" = "${a_addr}" ]; then
865 run_cmd python3 ./openvswitch/ 865 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
866 "recirc_id(0),in_port(${ve 866 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0800),ipv4()" \
867 "set(tunnel(tun_id=1,dst=$ 867 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
868 run_cmd python3 ./openvswitch/ 868 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
869 "recirc_id(0),in_port(${ve 869 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x86dd),ipv6()" \
870 "set(tunnel(tun_id=1,dst=$ 870 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
871 run_cmd python3 ./openvswitch/ 871 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
872 "recirc_id(0),tunnel(tun_i 872 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0800),ipv4()" \
873 "${veth_a_port}" 873 "${veth_a_port}"
874 run_cmd python3 ./openvswitch/ 874 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
875 "recirc_id(0),tunnel(tun_i 875 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x86dd),ipv6()" \
876 "${veth_a_port}" 876 "${veth_a_port}"
877 run_cmd python3 ./openvswitch/ 877 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
878 "recirc_id(0),tunnel(tun_i 878 "recirc_id(0),tunnel(tun_id=1,src=${v4_b_tun},dst=${v4_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0806),arp()" \
879 "${veth_a_port}" 879 "${veth_a_port}"
880 run_cmd python3 ./openvswitch/ 880 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
881 "recirc_id(0),in_port(${ve 881 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0806),arp(sip=${veth4_c_addr},tip=${tunnel4_b_addr})" \
882 "set(tunnel(tun_id=1,dst=$ 882 "set(tunnel(tun_id=1,dst=${v4_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
883 else 883 else
884 run_cmd python3 ./openvswitch/ 884 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
885 "recirc_id(0),in_port(${ve 885 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0800),ipv4()" \
886 "set(tunnel(tun_id=1,ipv6_ 886 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
887 run_cmd python3 ./openvswitch/ 887 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
888 "recirc_id(0),in_port(${ve 888 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x86dd),ipv6()" \
889 "set(tunnel(tun_id=1,ipv6_ 889 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
890 run_cmd python3 ./openvswitch/ 890 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
891 "recirc_id(0),tunnel(tun_i 891 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0800),ipv4()" \
892 "${veth_a_port}" 892 "${veth_a_port}"
893 run_cmd python3 ./openvswitch/ 893 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
894 "recirc_id(0),tunnel(tun_i 894 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x86dd),ipv6()" \
895 "${veth_a_port}" 895 "${veth_a_port}"
896 run_cmd python3 ./openvswitch/ 896 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
897 "recirc_id(0),tunnel(tun_i 897 "recirc_id(0),tunnel(tun_id=1,ipv6_src=${v6_b_tun},ipv6_dst=${v6_a_tun}),in_port(${type_a_port}),eth(),eth_type(0x0806),arp()" \
898 "${veth_a_port}" 898 "${veth_a_port}"
899 run_cmd python3 ./openvswitch/ 899 run_cmd python3 ./openvswitch/ovs-dpctl.py add-flow ovs_br0 \
900 "recirc_id(0),in_port(${ve 900 "recirc_id(0),in_port(${veth_a_port}),eth(),eth_type(0x0806),arp(sip=${veth4_c_addr},tip=${tunnel4_b_addr})" \
901 "set(tunnel(tun_id=1,ipv6_ 901 "set(tunnel(tun_id=1,ipv6_dst=${v6_b_tun},ttl=64,tp_dst=${dport},flags(df|csum))),${type_a_port}"
902 fi 902 fi
903 } 903 }
904 904
905 setup_ovs_via_vswitchd() { 905 setup_ovs_via_vswitchd() {
906 type="${1}" 906 type="${1}"
907 b_addr="${2}" 907 b_addr="${2}"
908 908
909 run_cmd ovs-vsctl add-port ovs_br0 ${t 909 run_cmd ovs-vsctl add-port ovs_br0 ${type}_a -- \
910 set interface ${type}_a type=$ 910 set interface ${type}_a type=${type} \
911 options:remote_ip=${b_addr} op 911 options:remote_ip=${b_addr} options:key=1 options:csum=true || return 1
912 } 912 }
913 913
914 setup_ovs_vxlan_or_geneve() { 914 setup_ovs_vxlan_or_geneve() {
915 type="${1}" 915 type="${1}"
916 a_addr="${2}" 916 a_addr="${2}"
917 b_addr="${3}" 917 b_addr="${3}"
918 dport="6081" 918 dport="6081"
919 919
920 if [ "${type}" = "vxlan" ]; then 920 if [ "${type}" = "vxlan" ]; then
921 dport="4789" 921 dport="4789"
922 opts="${opts} ttl 64 dstport 4 922 opts="${opts} ttl 64 dstport 4789"
923 opts_b="local ${b_addr}" 923 opts_b="local ${b_addr}"
924 fi 924 fi
925 925
926 setup_ovs_via_internal_utility "${type 926 setup_ovs_via_internal_utility "${type}" "${a_addr}" "${b_addr}" \
927 "${dpor 927 "${dport}" || \
928 setup_ovs_via_vswitchd "${type}" " 928 setup_ovs_via_vswitchd "${type}" "${b_addr}" || return 1
929 929
930 run_cmd ${ns_b} ip link add ${type}_b 930 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts} || return 1
931 931
932 run_cmd ${ns_b} ip addr add ${tunnel4_ 932 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
933 run_cmd ${ns_b} ip addr add ${tunnel6_ 933 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
934 934
935 run_cmd ip link set ${type}_a up 935 run_cmd ip link set ${type}_a up
936 run_cmd ${ns_b} ip link set ${type}_b 936 run_cmd ${ns_b} ip link set ${type}_b up
937 } 937 }
938 938
939 setup_ovs_geneve4() { 939 setup_ovs_geneve4() {
940 setup_ovs_vxlan_or_geneve geneve ${pre 940 setup_ovs_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
941 } 941 }
942 942
943 setup_ovs_vxlan4() { 943 setup_ovs_vxlan4() {
944 setup_ovs_vxlan_or_geneve vxlan ${pre 944 setup_ovs_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
945 } 945 }
946 946
947 setup_ovs_geneve6() { 947 setup_ovs_geneve6() {
948 setup_ovs_vxlan_or_geneve geneve ${pre 948 setup_ovs_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
949 } 949 }
950 950
951 setup_ovs_vxlan6() { 951 setup_ovs_vxlan6() {
952 setup_ovs_vxlan_or_geneve vxlan ${pre 952 setup_ovs_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
953 } 953 }
954 954
955 setup_ovs_br_internal() { 955 setup_ovs_br_internal() {
956 run_cmd python3 ./openvswitch/ovs-dpct 956 run_cmd python3 ./openvswitch/ovs-dpctl.py add-dp ovs_br0 || \
957 return 1 957 return 1
958 } 958 }
959 959
960 setup_ovs_br_vswitchd() { 960 setup_ovs_br_vswitchd() {
961 run_cmd ovs-vsctl add-br ovs_br0 || re 961 run_cmd ovs-vsctl add-br ovs_br0 || return 1
962 } 962 }
963 963
964 setup_ovs_add_if() { 964 setup_ovs_add_if() {
965 ifname="${1}" 965 ifname="${1}"
966 run_cmd python3 ./openvswitch/ovs-dpct 966 run_cmd python3 ./openvswitch/ovs-dpctl.py add-if ovs_br0 \
967 "${ifname}" || \ 967 "${ifname}" || \
968 run_cmd ovs-vsctl add-port ovs 968 run_cmd ovs-vsctl add-port ovs_br0 "${ifname}"
969 } 969 }
970 970
971 setup_ovs_bridge() { 971 setup_ovs_bridge() {
972 setup_ovs_br_internal || setup_ovs_br_ 972 setup_ovs_br_internal || setup_ovs_br_vswitchd || return $ksft_skip
973 run_cmd ip link set ovs_br0 up 973 run_cmd ip link set ovs_br0 up
974 974
975 run_cmd ${ns_c} ip link add veth_C-A t 975 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 976 run_cmd ${ns_c} ip link set veth_A-C netns 1
977 977
978 run_cmd ip link set veth_A-C u 978 run_cmd ip link set veth_A-C up
979 run_cmd ${ns_c} ip link set veth_C-A u 979 run_cmd ${ns_c} ip link set veth_C-A up
980 run_cmd ${ns_c} ip addr add ${veth4_c_ 980 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_ 981 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
982 setup_ovs_add_if veth_A-C 982 setup_ovs_add_if veth_A-C
983 983
984 # Move veth_A-R1 to init 984 # Move veth_A-R1 to init
985 run_cmd ${ns_a} ip link set veth_A-R1 985 run_cmd ${ns_a} ip link set veth_A-R1 netns 1
986 run_cmd ip addr add ${prefix4}.${a_r1} 986 run_cmd ip addr add ${prefix4}.${a_r1}.1/${veth4_mask} dev veth_A-R1
987 run_cmd ip addr add ${prefix6}:${a_r1} 987 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 988 run_cmd ip link set veth_A-R1 up
989 run_cmd ip route add ${prefix4}.${b_r1 989 run_cmd ip route add ${prefix4}.${b_r1}.1 via ${prefix4}.${a_r1}.2
990 run_cmd ip route add ${prefix6}:${b_r1 990 run_cmd ip route add ${prefix6}:${b_r1}::1 via ${prefix6}:${a_r1}::2
991 } 991 }
992 992
993 setup() { 993 setup() {
994 [ "$(id -u)" -ne 0 ] && echo " need t 994 [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip
995 995
996 for arg do 996 for arg do
997 eval setup_${arg} || { echo " 997 eval setup_${arg} || { echo " ${arg} not supported"; return 1; }
998 done 998 done
999 } 999 }
1000 1000
1001 trace() { 1001 trace() {
1002 [ $TRACING -eq 0 ] && return 1002 [ $TRACING -eq 0 ] && return
1003 1003
1004 for arg do 1004 for arg do
1005 [ "${ns_cmd}" = "" ] && ns_cm 1005 [ "${ns_cmd}" = "" ] && ns_cmd="${arg}" && continue
1006 ${ns_cmd} tcpdump --immediate 1006 ${ns_cmd} tcpdump --immediate-mode -s 0 -i "${arg}" -w "${name}_${arg}.pcap" 2> /dev/null &
1007 tcpdump_pids="${tcpdump_pids} 1007 tcpdump_pids="${tcpdump_pids} $!"
1008 ns_cmd= 1008 ns_cmd=
1009 done 1009 done
1010 sleep 1 1010 sleep 1
1011 } 1011 }
1012 1012
1013 cleanup_del_ovs_internal() { 1013 cleanup_del_ovs_internal() {
1014 # squelch the output of the del-if co 1014 # squelch the output of the del-if commands since it can be wordy
1015 python3 ./openvswitch/ovs-dpctl.py de 1015 python3 ./openvswitch/ovs-dpctl.py del-if ovs_br0 -d true vxlan_a >/dev/null 2>&1
1016 python3 ./openvswitch/ovs-dpctl.py de 1016 python3 ./openvswitch/ovs-dpctl.py del-if ovs_br0 -d true geneve_a >/dev/null 2>&1
1017 python3 ./openvswitch/ovs-dpctl.py de 1017 python3 ./openvswitch/ovs-dpctl.py del-dp ovs_br0 >/dev/null 2>&1
1018 } 1018 }
1019 1019
1020 cleanup_del_ovs_vswitchd() { 1020 cleanup_del_ovs_vswitchd() {
1021 ovs-vsctl --if-exists del-port vxlan_ 1021 ovs-vsctl --if-exists del-port vxlan_a 2>/dev/null
1022 ovs-vsctl --if-exists del-br ovs_br0 1022 ovs-vsctl --if-exists del-br ovs_br0 2>/dev/null
1023 } 1023 }
1024 1024
1025 cleanup() { 1025 cleanup() {
1026 for pid in ${tcpdump_pids}; do 1026 for pid in ${tcpdump_pids}; do
1027 kill ${pid} 1027 kill ${pid}
1028 done 1028 done
1029 tcpdump_pids= 1029 tcpdump_pids=
1030 1030
1031 for pid in ${nettest_pids}; do 1031 for pid in ${nettest_pids}; do
1032 kill ${pid} 1032 kill ${pid}
1033 done 1033 done
1034 nettest_pids= 1034 nettest_pids=
1035 1035
1036 for pid in ${socat_pids}; do 1036 for pid in ${socat_pids}; do
1037 kill "${pid}" 1037 kill "${pid}"
1038 done 1038 done
1039 socat_pids= 1039 socat_pids=
1040 1040
1041 cleanup_all_ns 1041 cleanup_all_ns
1042 1042
1043 ip link del veth_A-C 2>/de 1043 ip link del veth_A-C 2>/dev/null
1044 ip link del veth_A-R1 2>/de 1044 ip link del veth_A-R1 2>/dev/null
1045 cleanup_del_ovs_internal 1045 cleanup_del_ovs_internal
1046 cleanup_del_ovs_vswitchd 1046 cleanup_del_ovs_vswitchd
1047 rm -f "$tmpoutfile" 1047 rm -f "$tmpoutfile"
1048 } 1048 }
1049 1049
1050 mtu() { 1050 mtu() {
1051 ns_cmd="${1}" 1051 ns_cmd="${1}"
1052 dev="${2}" 1052 dev="${2}"
1053 mtu="${3}" 1053 mtu="${3}"
1054 1054
1055 ${ns_cmd} ip link set dev ${dev} mtu 1055 ${ns_cmd} ip link set dev ${dev} mtu ${mtu}
1056 } 1056 }
1057 1057
1058 mtu_parse() { 1058 mtu_parse() {
1059 input="${1}" 1059 input="${1}"
1060 1060
1061 next=0 1061 next=0
1062 for i in ${input}; do 1062 for i in ${input}; do
1063 [ ${next} -eq 1 -a "${i}" = " 1063 [ ${next} -eq 1 -a "${i}" = "lock" ] && next=2 && continue
1064 [ ${next} -eq 1 ] && echo "${ 1064 [ ${next} -eq 1 ] && echo "${i}" && return
1065 [ ${next} -eq 2 ] && echo "lo 1065 [ ${next} -eq 2 ] && echo "lock ${i}" && return
1066 [ "${i}" = "mtu" ] && next=1 1066 [ "${i}" = "mtu" ] && next=1
1067 done 1067 done
1068 } 1068 }
1069 1069
1070 link_get() { 1070 link_get() {
1071 ns_cmd="${1}" 1071 ns_cmd="${1}"
1072 name="${2}" 1072 name="${2}"
1073 1073
1074 ${ns_cmd} ip link show dev "${name}" 1074 ${ns_cmd} ip link show dev "${name}"
1075 } 1075 }
1076 1076
1077 link_get_mtu() { 1077 link_get_mtu() {
1078 ns_cmd="${1}" 1078 ns_cmd="${1}"
1079 name="${2}" 1079 name="${2}"
1080 1080
1081 mtu_parse "$(link_get "${ns_cmd}" ${n 1081 mtu_parse "$(link_get "${ns_cmd}" ${name})"
1082 } 1082 }
1083 1083
1084 route_get_dst_exception() { 1084 route_get_dst_exception() {
1085 ns_cmd="${1}" 1085 ns_cmd="${1}"
1086 dst="${2}" 1086 dst="${2}"
1087 dsfield="${3}" 1087 dsfield="${3}"
1088 1088
1089 if [ -z "${dsfield}" ]; then 1089 if [ -z "${dsfield}" ]; then
1090 dsfield=0 1090 dsfield=0
1091 fi 1091 fi
1092 1092
1093 ${ns_cmd} ip route get "${dst}" dsfie 1093 ${ns_cmd} ip route get "${dst}" dsfield "${dsfield}"
1094 } 1094 }
1095 1095
1096 route_get_dst_pmtu_from_exception() { 1096 route_get_dst_pmtu_from_exception() {
1097 ns_cmd="${1}" 1097 ns_cmd="${1}"
1098 dst="${2}" 1098 dst="${2}"
1099 dsfield="${3}" 1099 dsfield="${3}"
1100 1100
1101 mtu_parse "$(route_get_dst_exception 1101 mtu_parse "$(route_get_dst_exception "${ns_cmd}" "${dst}" "${dsfield}")"
1102 } 1102 }
1103 1103
1104 check_pmtu_value() { 1104 check_pmtu_value() {
1105 expected="${1}" 1105 expected="${1}"
1106 value="${2}" 1106 value="${2}"
1107 event="${3}" 1107 event="${3}"
1108 1108
1109 [ "${expected}" = "any" ] && [ -n "${ 1109 [ "${expected}" = "any" ] && [ -n "${value}" ] && return 0
1110 [ "${value}" = "${expected}" ] && ret 1110 [ "${value}" = "${expected}" ] && return 0
1111 [ -z "${value}" ] && err " PMTU e 1111 [ -z "${value}" ] && err " PMTU exception wasn't created after ${event}" && return 1
1112 [ -z "${expected}" ] && err " PMTU e 1112 [ -z "${expected}" ] && err " PMTU exception shouldn't exist after ${event}" && return 1
1113 err " found PMTU exception with inco 1113 err " found PMTU exception with incorrect MTU ${value}, expected ${expected}, after ${event}"
1114 return 1 1114 return 1
1115 } 1115 }
1116 1116
1117 test_pmtu_ipvX() { 1117 test_pmtu_ipvX() {
1118 family=${1} 1118 family=${1}
1119 1119
1120 setup namespaces routing || return $k 1120 setup namespaces routing || return $ksft_skip
1121 trace "${ns_a}" veth_A-R1 "${ns_r 1121 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1122 "${ns_r1}" veth_R1-B "${ns_b 1122 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1123 "${ns_a}" veth_A-R2 "${ns_r 1123 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1124 "${ns_r2}" veth_R2-B "${ns_b 1124 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1125 1125
1126 if [ ${family} -eq 4 ]; then 1126 if [ ${family} -eq 4 ]; then
1127 ping=ping 1127 ping=ping
1128 dst1="${prefix4}.${b_r1}.1" 1128 dst1="${prefix4}.${b_r1}.1"
1129 dst2="${prefix4}.${b_r2}.1" 1129 dst2="${prefix4}.${b_r2}.1"
1130 else 1130 else
1131 ping=${ping6} 1131 ping=${ping6}
1132 dst1="${prefix6}:${b_r1}::1" 1132 dst1="${prefix6}:${b_r1}::1"
1133 dst2="${prefix6}:${b_r2}::1" 1133 dst2="${prefix6}:${b_r2}::1"
1134 fi 1134 fi
1135 1135
1136 # Set up initial MTU values 1136 # Set up initial MTU values
1137 mtu "${ns_a}" veth_A-R1 2000 1137 mtu "${ns_a}" veth_A-R1 2000
1138 mtu "${ns_r1}" veth_R1-A 2000 1138 mtu "${ns_r1}" veth_R1-A 2000
1139 mtu "${ns_r1}" veth_R1-B 1400 1139 mtu "${ns_r1}" veth_R1-B 1400
1140 mtu "${ns_b}" veth_B-R1 1400 1140 mtu "${ns_b}" veth_B-R1 1400
1141 1141
1142 mtu "${ns_a}" veth_A-R2 2000 1142 mtu "${ns_a}" veth_A-R2 2000
1143 mtu "${ns_r2}" veth_R2-A 2000 1143 mtu "${ns_r2}" veth_R2-A 2000
1144 mtu "${ns_r2}" veth_R2-B 1500 1144 mtu "${ns_r2}" veth_R2-B 1500
1145 mtu "${ns_b}" veth_B-R2 1500 1145 mtu "${ns_b}" veth_B-R2 1500
1146 1146
1147 # Create route exceptions 1147 # Create route exceptions
1148 run_cmd ${ns_a} ${ping} -q -M want -i 1148 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 1149 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
1150 1150
1151 # Check that exceptions have been cre 1151 # Check that exceptions have been created with the correct PMTU
1152 pmtu_1="$(route_get_dst_pmtu_from_exc 1152 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1153 check_pmtu_value "1400" "${pmtu_1}" " 1153 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1154 pmtu_2="$(route_get_dst_pmtu_from_exc 1154 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1155 check_pmtu_value "1500" "${pmtu_2}" " 1155 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1156 1156
1157 # Decrease local MTU below PMTU, chec 1157 # Decrease local MTU below PMTU, check for PMTU decrease in route exception
1158 mtu "${ns_a}" veth_A-R1 1300 1158 mtu "${ns_a}" veth_A-R1 1300
1159 mtu "${ns_r1}" veth_R1-A 1300 1159 mtu "${ns_r1}" veth_R1-A 1300
1160 pmtu_1="$(route_get_dst_pmtu_from_exc 1160 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1161 check_pmtu_value "1300" "${pmtu_1}" " 1161 check_pmtu_value "1300" "${pmtu_1}" "decreasing local MTU" || return 1
1162 # Second exception shouldn't be modif 1162 # Second exception shouldn't be modified
1163 pmtu_2="$(route_get_dst_pmtu_from_exc 1163 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1164 check_pmtu_value "1500" "${pmtu_2}" " 1164 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1165 1165
1166 # Increase MTU, check for PMTU increa 1166 # Increase MTU, check for PMTU increase in route exception
1167 mtu "${ns_a}" veth_A-R1 1700 1167 mtu "${ns_a}" veth_A-R1 1700
1168 mtu "${ns_r1}" veth_R1-A 1700 1168 mtu "${ns_r1}" veth_R1-A 1700
1169 pmtu_1="$(route_get_dst_pmtu_from_exc 1169 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1170 check_pmtu_value "1700" "${pmtu_1}" " 1170 check_pmtu_value "1700" "${pmtu_1}" "increasing local MTU" || return 1
1171 # Second exception shouldn't be modif 1171 # Second exception shouldn't be modified
1172 pmtu_2="$(route_get_dst_pmtu_from_exc 1172 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1173 check_pmtu_value "1500" "${pmtu_2}" " 1173 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1174 1174
1175 # Skip PMTU locking tests for IPv6 1175 # Skip PMTU locking tests for IPv6
1176 [ $family -eq 6 ] && return 0 1176 [ $family -eq 6 ] && return 0
1177 1177
1178 # Decrease remote MTU on path via R2, 1178 # Decrease remote MTU on path via R2, get new exception
1179 mtu "${ns_r2}" veth_R2-B 400 1179 mtu "${ns_r2}" veth_R2-B 400
1180 mtu "${ns_b}" veth_B-R2 400 1180 mtu "${ns_b}" veth_B-R2 400
1181 run_cmd ${ns_a} ${ping} -q -M want -i 1181 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 1182 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1183 check_pmtu_value "lock 552" "${pmtu_2 1183 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1184 1184
1185 # Decrease local MTU below PMTU 1185 # Decrease local MTU below PMTU
1186 mtu "${ns_a}" veth_A-R2 500 1186 mtu "${ns_a}" veth_A-R2 500
1187 mtu "${ns_r2}" veth_R2-A 500 1187 mtu "${ns_r2}" veth_R2-A 500
1188 pmtu_2="$(route_get_dst_pmtu_from_exc 1188 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1189 check_pmtu_value "500" "${pmtu_2}" "d 1189 check_pmtu_value "500" "${pmtu_2}" "decreasing local MTU" || return 1
1190 1190
1191 # Increase local MTU 1191 # Increase local MTU
1192 mtu "${ns_a}" veth_A-R2 1500 1192 mtu "${ns_a}" veth_A-R2 1500
1193 mtu "${ns_r2}" veth_R2-A 1500 1193 mtu "${ns_r2}" veth_R2-A 1500
1194 pmtu_2="$(route_get_dst_pmtu_from_exc 1194 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1195 check_pmtu_value "1500" "${pmtu_2}" " 1195 check_pmtu_value "1500" "${pmtu_2}" "increasing local MTU" || return 1
1196 1196
1197 # Get new exception 1197 # Get new exception
1198 run_cmd ${ns_a} ${ping} -q -M want -i 1198 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 1199 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1200 check_pmtu_value "lock 552" "${pmtu_2 1200 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1201 } 1201 }
1202 1202
1203 test_pmtu_ipv4_exception() { 1203 test_pmtu_ipv4_exception() {
1204 test_pmtu_ipvX 4 1204 test_pmtu_ipvX 4
1205 } 1205 }
1206 1206
1207 test_pmtu_ipv6_exception() { 1207 test_pmtu_ipv6_exception() {
1208 test_pmtu_ipvX 6 1208 test_pmtu_ipvX 6
1209 } 1209 }
1210 1210
1211 test_pmtu_ipv4_dscp_icmp_exception() { 1211 test_pmtu_ipv4_dscp_icmp_exception() {
1212 rt_table=100 1212 rt_table=100
1213 1213
1214 setup namespaces policy_routing || re 1214 setup namespaces policy_routing || return $ksft_skip
1215 trace "${ns_a}" veth_A-R1 "${ns_r 1215 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1216 "${ns_r1}" veth_R1-B "${ns_b 1216 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1217 "${ns_a}" veth_A-R2 "${ns_r 1217 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1218 "${ns_r2}" veth_R2-B "${ns_b 1218 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1219 1219
1220 # Set up initial MTU values 1220 # Set up initial MTU values
1221 mtu "${ns_a}" veth_A-R1 2000 1221 mtu "${ns_a}" veth_A-R1 2000
1222 mtu "${ns_r1}" veth_R1-A 2000 1222 mtu "${ns_r1}" veth_R1-A 2000
1223 mtu "${ns_r1}" veth_R1-B 1400 1223 mtu "${ns_r1}" veth_R1-B 1400
1224 mtu "${ns_b}" veth_B-R1 1400 1224 mtu "${ns_b}" veth_B-R1 1400
1225 1225
1226 mtu "${ns_a}" veth_A-R2 2000 1226 mtu "${ns_a}" veth_A-R2 2000
1227 mtu "${ns_r2}" veth_R2-A 2000 1227 mtu "${ns_r2}" veth_R2-A 2000
1228 mtu "${ns_r2}" veth_R2-B 1500 1228 mtu "${ns_r2}" veth_R2-B 1500
1229 mtu "${ns_b}" veth_B-R2 1500 1229 mtu "${ns_b}" veth_B-R2 1500
1230 1230
1231 len=$((2000 - 20 - 8)) # Fills MTU of 1231 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1232 1232
1233 dst1="${prefix4}.${b_r1}.1" 1233 dst1="${prefix4}.${b_r1}.1"
1234 dst2="${prefix4}.${b_r2}.1" 1234 dst2="${prefix4}.${b_r2}.1"
1235 1235
1236 # Create route exceptions 1236 # Create route exceptions
1237 dsfield=${policy_mark} # No ECN bit s 1237 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1238 run_cmd "${ns_a}" ping -q -M want -Q 1238 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst1}"
1239 1239
1240 dsfield=$(printf "%#x" $((policy_mark 1240 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1241 run_cmd "${ns_a}" ping -q -M want -Q 1241 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst2}"
1242 1242
1243 # Check that exceptions have been cre 1243 # Check that exceptions have been created with the correct PMTU
1244 pmtu_1="$(route_get_dst_pmtu_from_exc 1244 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" "${policy_mark}")"
1245 check_pmtu_value "1400" "${pmtu_1}" " 1245 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1246 1246
1247 pmtu_2="$(route_get_dst_pmtu_from_exc 1247 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" "${policy_mark}")"
1248 check_pmtu_value "1500" "${pmtu_2}" " 1248 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1249 } 1249 }
1250 1250
1251 test_pmtu_ipv4_dscp_udp_exception() { 1251 test_pmtu_ipv4_dscp_udp_exception() {
1252 rt_table=100 1252 rt_table=100
1253 1253
1254 if ! which socat > /dev/null 2>&1; th 1254 if ! which socat > /dev/null 2>&1; then
1255 echo "'socat' command not fou 1255 echo "'socat' command not found; skipping tests"
1256 return $ksft_skip 1256 return $ksft_skip
1257 fi 1257 fi
1258 1258
1259 setup namespaces policy_routing || re 1259 setup namespaces policy_routing || return $ksft_skip
1260 trace "${ns_a}" veth_A-R1 "${ns_r 1260 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1261 "${ns_r1}" veth_R1-B "${ns_b 1261 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1262 "${ns_a}" veth_A-R2 "${ns_r 1262 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1263 "${ns_r2}" veth_R2-B "${ns_b 1263 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1264 1264
1265 # Set up initial MTU values 1265 # Set up initial MTU values
1266 mtu "${ns_a}" veth_A-R1 2000 1266 mtu "${ns_a}" veth_A-R1 2000
1267 mtu "${ns_r1}" veth_R1-A 2000 1267 mtu "${ns_r1}" veth_R1-A 2000
1268 mtu "${ns_r1}" veth_R1-B 1400 1268 mtu "${ns_r1}" veth_R1-B 1400
1269 mtu "${ns_b}" veth_B-R1 1400 1269 mtu "${ns_b}" veth_B-R1 1400
1270 1270
1271 mtu "${ns_a}" veth_A-R2 2000 1271 mtu "${ns_a}" veth_A-R2 2000
1272 mtu "${ns_r2}" veth_R2-A 2000 1272 mtu "${ns_r2}" veth_R2-A 2000
1273 mtu "${ns_r2}" veth_R2-B 1500 1273 mtu "${ns_r2}" veth_R2-B 1500
1274 mtu "${ns_b}" veth_B-R2 1500 1274 mtu "${ns_b}" veth_B-R2 1500
1275 1275
1276 len=$((2000 - 20 - 8)) # Fills MTU of 1276 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1277 1277
1278 dst1="${prefix4}.${b_r1}.1" 1278 dst1="${prefix4}.${b_r1}.1"
1279 dst2="${prefix4}.${b_r2}.1" 1279 dst2="${prefix4}.${b_r2}.1"
1280 1280
1281 # Create route exceptions 1281 # Create route exceptions
1282 run_cmd_bg "${ns_b}" socat UDP-LISTEN 1282 run_cmd_bg "${ns_b}" socat UDP-LISTEN:50000 OPEN:/dev/null,wronly=1
1283 socat_pids="${socat_pids} $!" 1283 socat_pids="${socat_pids} $!"
1284 1284
1285 dsfield=${policy_mark} # No ECN bit s 1285 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1286 run_cmd "${ns_a}" socat OPEN:/dev/zer 1286 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1287 UDP:"${dst1}":50000,tos="${ds 1287 UDP:"${dst1}":50000,tos="${dsfield}"
1288 1288
1289 dsfield=$(printf "%#x" $((policy_mark 1289 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1290 run_cmd "${ns_a}" socat OPEN:/dev/zer 1290 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1291 UDP:"${dst2}":50000,tos="${ds 1291 UDP:"${dst2}":50000,tos="${dsfield}"
1292 1292
1293 # Check that exceptions have been cre 1293 # Check that exceptions have been created with the correct PMTU
1294 pmtu_1="$(route_get_dst_pmtu_from_exc 1294 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" "${policy_mark}")"
1295 check_pmtu_value "1400" "${pmtu_1}" " 1295 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1296 pmtu_2="$(route_get_dst_pmtu_from_exc 1296 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" "${policy_mark}")"
1297 check_pmtu_value "1500" "${pmtu_2}" " 1297 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1298 } 1298 }
1299 1299
1300 test_pmtu_ipvX_over_vxlanY_or_geneveY_excepti 1300 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception() {
1301 type=${1} 1301 type=${1}
1302 family=${2} 1302 family=${2}
1303 outer_family=${3} 1303 outer_family=${3}
1304 ll_mtu=4000 1304 ll_mtu=4000
1305 1305
1306 if [ ${outer_family} -eq 4 ]; then 1306 if [ ${outer_family} -eq 4 ]; then
1307 setup namespaces routing ${ty 1307 setup namespaces routing ${type}4 || return $ksft_skip
1308 # IPv4 h 1308 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1309 exp_mtu=$((${ll_mtu} - 20 1309 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1310 else 1310 else
1311 setup namespaces routing ${ty 1311 setup namespaces routing ${type}6 || return $ksft_skip
1312 # IPv6 h 1312 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1313 exp_mtu=$((${ll_mtu} - 40 1313 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1314 fi 1314 fi
1315 1315
1316 trace "${ns_a}" ${type}_a "${ns_b} 1316 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1317 "${ns_a}" veth_A-R1 "${ns_r1 1317 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1318 "${ns_b}" veth_B-R1 "${ns_r1 1318 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1319 1319
1320 if [ ${family} -eq 4 ]; then 1320 if [ ${family} -eq 4 ]; then
1321 ping=ping 1321 ping=ping
1322 dst=${tunnel4_b_addr} 1322 dst=${tunnel4_b_addr}
1323 else 1323 else
1324 ping=${ping6} 1324 ping=${ping6}
1325 dst=${tunnel6_b_addr} 1325 dst=${tunnel6_b_addr}
1326 fi 1326 fi
1327 1327
1328 # Create route exception by exceeding 1328 # Create route exception by exceeding link layer MTU
1329 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1329 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1330 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1330 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1331 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1331 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1332 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1332 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1333 1333
1334 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1334 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1335 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1335 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1336 run_cmd ${ns_a} ${ping} -q -M want -i 1336 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1337 1337
1338 # Check that exception was created 1338 # Check that exception was created
1339 pmtu="$(route_get_dst_pmtu_from_excep 1339 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1340 check_pmtu_value ${exp_mtu} "${pmtu}" 1340 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${type} interface"
1341 } 1341 }
1342 1342
1343 test_pmtu_ipv4_vxlan4_exception() { 1343 test_pmtu_ipv4_vxlan4_exception() {
1344 test_pmtu_ipvX_over_vxlanY_or_geneveY 1344 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 4
1345 } 1345 }
1346 1346
1347 test_pmtu_ipv6_vxlan4_exception() { 1347 test_pmtu_ipv6_vxlan4_exception() {
1348 test_pmtu_ipvX_over_vxlanY_or_geneveY 1348 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 4
1349 } 1349 }
1350 1350
1351 test_pmtu_ipv4_geneve4_exception() { 1351 test_pmtu_ipv4_geneve4_exception() {
1352 test_pmtu_ipvX_over_vxlanY_or_geneveY 1352 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 4
1353 } 1353 }
1354 1354
1355 test_pmtu_ipv6_geneve4_exception() { 1355 test_pmtu_ipv6_geneve4_exception() {
1356 test_pmtu_ipvX_over_vxlanY_or_geneveY 1356 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 4
1357 } 1357 }
1358 1358
1359 test_pmtu_ipv4_vxlan6_exception() { 1359 test_pmtu_ipv4_vxlan6_exception() {
1360 test_pmtu_ipvX_over_vxlanY_or_geneveY 1360 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 6
1361 } 1361 }
1362 1362
1363 test_pmtu_ipv6_vxlan6_exception() { 1363 test_pmtu_ipv6_vxlan6_exception() {
1364 test_pmtu_ipvX_over_vxlanY_or_geneveY 1364 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 6
1365 } 1365 }
1366 1366
1367 test_pmtu_ipv4_geneve6_exception() { 1367 test_pmtu_ipv4_geneve6_exception() {
1368 test_pmtu_ipvX_over_vxlanY_or_geneveY 1368 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 6
1369 } 1369 }
1370 1370
1371 test_pmtu_ipv6_geneve6_exception() { 1371 test_pmtu_ipv6_geneve6_exception() {
1372 test_pmtu_ipvX_over_vxlanY_or_geneveY 1372 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 6
1373 } 1373 }
1374 1374
1375 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY 1375 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() {
1376 type=${1} 1376 type=${1}
1377 family=${2} 1377 family=${2}
1378 outer_family=${3} 1378 outer_family=${3}
1379 ll_mtu=4000 1379 ll_mtu=4000
1380 1380
1381 if [ ${outer_family} -eq 4 ]; then 1381 if [ ${outer_family} -eq 4 ]; then
1382 setup namespaces routing brid 1382 setup namespaces routing bridge bridged_${type}4 || return $ksft_skip
1383 # IPv4 h 1383 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1384 exp_mtu=$((${ll_mtu} - 20 1384 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1385 else 1385 else
1386 setup namespaces routing brid 1386 setup namespaces routing bridge bridged_${type}6 || return $ksft_skip
1387 # IPv6 h 1387 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1388 exp_mtu=$((${ll_mtu} - 40 1388 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1389 fi 1389 fi
1390 1390
1391 trace "${ns_a}" ${type}_a "${ns_b} 1391 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1392 "${ns_a}" veth_A-R1 "${ns_r1 1392 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1393 "${ns_b}" veth_B-R1 "${ns_r1 1393 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1394 "${ns_a}" br0 "${ns_a} 1394 "${ns_a}" br0 "${ns_a}" veth-A-C \
1395 "${ns_c}" veth_C-A 1395 "${ns_c}" veth_C-A
1396 1396
1397 if [ ${family} -eq 4 ]; then 1397 if [ ${family} -eq 4 ]; then
1398 ping=ping 1398 ping=ping
1399 dst=${tunnel4_b_addr} 1399 dst=${tunnel4_b_addr}
1400 else 1400 else
1401 ping=${ping6} 1401 ping=${ping6}
1402 dst=${tunnel6_b_addr} 1402 dst=${tunnel6_b_addr}
1403 fi 1403 fi
1404 1404
1405 # Create route exception by exceeding 1405 # Create route exception by exceeding link layer MTU
1406 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1406 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1407 mtu "${ns_a}" br0 $((${ll_mtu} 1407 mtu "${ns_a}" br0 $((${ll_mtu} + 1000))
1408 mtu "${ns_a}" veth_A-C $((${ll_mtu} 1408 mtu "${ns_a}" veth_A-C $((${ll_mtu} + 1000))
1409 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1409 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1410 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1410 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1411 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1411 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1412 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1412 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1413 1413
1414 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1414 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1415 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1415 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1416 1416
1417 run_cmd ${ns_c} ${ping} -q -M want -i 1417 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 1418 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst} || return 1
1419 1419
1420 # Check that exceptions were created 1420 # Check that exceptions were created
1421 pmtu="$(route_get_dst_pmtu_from_excep 1421 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1422 check_pmtu_value ${exp_mtu} "${pmtu}" 1422 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on bridged ${type} interface"
1423 pmtu="$(route_get_dst_pmtu_from_excep 1423 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1424 check_pmtu_value ${exp_mtu} "${pmtu}" 1424 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on locally bridged ${type} interface"
1425 1425
1426 tmpoutfile=$(mktemp) 1426 tmpoutfile=$(mktemp)
1427 1427
1428 # Flush Exceptions, retry with TCP 1428 # Flush Exceptions, retry with TCP
1429 run_cmd ${ns_a} ip route flush cached 1429 run_cmd ${ns_a} ip route flush cached ${dst}
1430 run_cmd ${ns_b} ip route flush cached 1430 run_cmd ${ns_b} ip route flush cached ${dst}
1431 run_cmd ${ns_c} ip route flush cached 1431 run_cmd ${ns_c} ip route flush cached ${dst}
1432 1432
1433 for target in "${ns_a}" "${ns_c}" ; d 1433 for target in "${ns_a}" "${ns_c}" ; do
1434 if [ ${family} -eq 4 ]; then 1434 if [ ${family} -eq 4 ]; then
1435 TCPDST=TCP:${dst}:500 1435 TCPDST=TCP:${dst}:50000
1436 else 1436 else
1437 TCPDST="TCP:[${dst}]: 1437 TCPDST="TCP:[${dst}]:50000"
1438 fi 1438 fi
1439 ${ns_b} socat -T 3 -u -6 TCP- 1439 ${ns_b} socat -T 3 -u -6 TCP-LISTEN:50000,reuseaddr STDOUT > $tmpoutfile &
1440 local socat_pid=$! 1440 local socat_pid=$!
1441 1441
1442 wait_local_port_listen ${NS_B 1442 wait_local_port_listen ${NS_B} 50000 tcp
1443 1443
1444 dd if=/dev/zero status=none b 1444 dd if=/dev/zero status=none bs=1M count=1 | ${target} socat -T 3 -u STDIN $TCPDST,connect-timeout=3
1445 1445
1446 wait ${socat_pid} 1446 wait ${socat_pid}
1447 size=$(du -sb $tmpoutfile) 1447 size=$(du -sb $tmpoutfile)
1448 size=${size%%/tmp/*} 1448 size=${size%%/tmp/*}
1449 1449
1450 [ $size -ne 1048576 ] && err 1450 [ $size -ne 1048576 ] && err "File size $size mismatches exepcted value in locally bridged vxlan test" && return 1
1451 done 1451 done
1452 1452
1453 rm -f "$tmpoutfile" 1453 rm -f "$tmpoutfile"
1454 1454
1455 # Check that exceptions were created 1455 # Check that exceptions were created
1456 pmtu="$(route_get_dst_pmtu_from_excep 1456 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1457 check_pmtu_value ${exp_mtu} "${pmtu}" 1457 check_pmtu_value ${exp_mtu} "${pmtu}" "tcp: exceeding link layer MTU on bridged ${type} interface"
1458 pmtu="$(route_get_dst_pmtu_from_excep 1458 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1459 check_pmtu_value ${exp_mtu} "${pmtu}" 1459 check_pmtu_value ${exp_mtu} "${pmtu}" "tcp exceeding link layer MTU on locally bridged ${type} interface"
1460 } 1460 }
1461 1461
1462 test_pmtu_ipv4_br_vxlan4_exception() { 1462 test_pmtu_ipv4_br_vxlan4_exception() {
1463 test_pmtu_ipvX_over_bridged_vxlanY_or 1463 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 4
1464 } 1464 }
1465 1465
1466 test_pmtu_ipv6_br_vxlan4_exception() { 1466 test_pmtu_ipv6_br_vxlan4_exception() {
1467 test_pmtu_ipvX_over_bridged_vxlanY_or 1467 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 4
1468 } 1468 }
1469 1469
1470 test_pmtu_ipv4_br_geneve4_exception() { 1470 test_pmtu_ipv4_br_geneve4_exception() {
1471 test_pmtu_ipvX_over_bridged_vxlanY_or 1471 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 4
1472 } 1472 }
1473 1473
1474 test_pmtu_ipv6_br_geneve4_exception() { 1474 test_pmtu_ipv6_br_geneve4_exception() {
1475 test_pmtu_ipvX_over_bridged_vxlanY_or 1475 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 4
1476 } 1476 }
1477 1477
1478 test_pmtu_ipv4_br_vxlan6_exception() { 1478 test_pmtu_ipv4_br_vxlan6_exception() {
1479 test_pmtu_ipvX_over_bridged_vxlanY_or 1479 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 6
1480 } 1480 }
1481 1481
1482 test_pmtu_ipv6_br_vxlan6_exception() { 1482 test_pmtu_ipv6_br_vxlan6_exception() {
1483 test_pmtu_ipvX_over_bridged_vxlanY_or 1483 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 6
1484 } 1484 }
1485 1485
1486 test_pmtu_ipv4_br_geneve6_exception() { 1486 test_pmtu_ipv4_br_geneve6_exception() {
1487 test_pmtu_ipvX_over_bridged_vxlanY_or 1487 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 6
1488 } 1488 }
1489 1489
1490 test_pmtu_ipv6_br_geneve6_exception() { 1490 test_pmtu_ipv6_br_geneve6_exception() {
1491 test_pmtu_ipvX_over_bridged_vxlanY_or 1491 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 6
1492 } 1492 }
1493 1493
1494 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exc 1494 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception() {
1495 type=${1} 1495 type=${1}
1496 family=${2} 1496 family=${2}
1497 outer_family=${3} 1497 outer_family=${3}
1498 ll_mtu=4000 1498 ll_mtu=4000
1499 1499
1500 if [ "${type}" = "vxlan" ]; then 1500 if [ "${type}" = "vxlan" ]; then
1501 tun_a="vxlan_sys_4789" 1501 tun_a="vxlan_sys_4789"
1502 elif [ "${type}" = "geneve" ]; then 1502 elif [ "${type}" = "geneve" ]; then
1503 tun_a="genev_sys_6081" 1503 tun_a="genev_sys_6081"
1504 fi 1504 fi
1505 1505
1506 if [ ${outer_family} -eq 4 ]; then 1506 if [ ${outer_family} -eq 4 ]; then
1507 setup namespaces routing ovs_ 1507 setup namespaces routing ovs_bridge ovs_${type}4 || return $ksft_skip
1508 # IPv4 h 1508 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1509 exp_mtu=$((${ll_mtu} - 20 1509 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1510 else 1510 else
1511 setup namespaces routing ovs_ 1511 setup namespaces routing ovs_bridge ovs_${type}6 || return $ksft_skip
1512 # IPv6 h 1512 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1513 exp_mtu=$((${ll_mtu} - 40 1513 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1514 fi 1514 fi
1515 1515
1516 trace "" ${type}_a "${ns_b} 1516 trace "" ${type}_a "${ns_b}" ${type}_b \
1517 "" veth_A-R1 "${ns_r1 1517 "" veth_A-R1 "${ns_r1}" veth_R1-A \
1518 "${ns_b}" veth_B-R1 "${ns_r1 1518 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1519 "" ovs_br0 "" 1519 "" ovs_br0 "" veth-A_C \
1520 "${ns_c}" veth_C-A "" 1520 "${ns_c}" veth_C-A "" "${tun_a}"
1521 1521
1522 if [ ${family} -eq 4 ]; then 1522 if [ ${family} -eq 4 ]; then
1523 ping=ping 1523 ping=ping
1524 dst=${tunnel4_b_addr} 1524 dst=${tunnel4_b_addr}
1525 else 1525 else
1526 ping=${ping6} 1526 ping=${ping6}
1527 dst=${tunnel6_b_addr} 1527 dst=${tunnel6_b_addr}
1528 fi 1528 fi
1529 1529
1530 # Create route exception by exceeding 1530 # Create route exception by exceeding link layer MTU
1531 mtu "" veth_A-R1 $((${ll_mtu} 1531 mtu "" veth_A-R1 $((${ll_mtu} + 1000))
1532 mtu "" ovs_br0 $((${ll_mtu} 1532 mtu "" ovs_br0 $((${ll_mtu} + 1000))
1533 mtu "" veth_A-C $((${ll_mtu} 1533 mtu "" veth_A-C $((${ll_mtu} + 1000))
1534 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1534 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1535 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1535 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1536 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1536 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1537 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1537 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1538 1538
1539 mtu "" ${tun_a} $((${ll_mtu} 1539 mtu "" ${tun_a} $((${ll_mtu} + 1000)) 2>/dev/null || \
1540 mtu "" ${type}_a $(($ 1540 mtu "" ${type}_a $((${ll_mtu} + 1000)) 2>/dev/null
1541 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1541 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1542 1542
1543 run_cmd ${ns_c} ${ping} -q -M want -i 1543 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 20 -s $((${ll_mtu} + 500)) ${dst} || return 1
1544 1544
1545 # Check that exceptions were created 1545 # Check that exceptions were created
1546 pmtu="$(route_get_dst_pmtu_from_excep 1546 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1547 check_pmtu_value ${exp_mtu} "${pmtu}" 1547 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on Open vSwitch ${type} interface"
1548 } 1548 }
1549 1549
1550 test_pmtu_ipv4_ovs_vxlan4_exception() { 1550 test_pmtu_ipv4_ovs_vxlan4_exception() {
1551 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1551 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 4
1552 } 1552 }
1553 1553
1554 test_pmtu_ipv6_ovs_vxlan4_exception() { 1554 test_pmtu_ipv6_ovs_vxlan4_exception() {
1555 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1555 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 4
1556 } 1556 }
1557 1557
1558 test_pmtu_ipv4_ovs_geneve4_exception() { 1558 test_pmtu_ipv4_ovs_geneve4_exception() {
1559 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1559 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 4
1560 } 1560 }
1561 1561
1562 test_pmtu_ipv6_ovs_geneve4_exception() { 1562 test_pmtu_ipv6_ovs_geneve4_exception() {
1563 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1563 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 4
1564 } 1564 }
1565 1565
1566 test_pmtu_ipv4_ovs_vxlan6_exception() { 1566 test_pmtu_ipv4_ovs_vxlan6_exception() {
1567 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1567 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 6
1568 } 1568 }
1569 1569
1570 test_pmtu_ipv6_ovs_vxlan6_exception() { 1570 test_pmtu_ipv6_ovs_vxlan6_exception() {
1571 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1571 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 6
1572 } 1572 }
1573 1573
1574 test_pmtu_ipv4_ovs_geneve6_exception() { 1574 test_pmtu_ipv4_ovs_geneve6_exception() {
1575 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1575 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 6
1576 } 1576 }
1577 1577
1578 test_pmtu_ipv6_ovs_geneve6_exception() { 1578 test_pmtu_ipv6_ovs_geneve6_exception() {
1579 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1579 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 6
1580 } 1580 }
1581 1581
1582 test_pmtu_ipvX_over_fouY_or_gueY() { 1582 test_pmtu_ipvX_over_fouY_or_gueY() {
1583 inner_family=${1} 1583 inner_family=${1}
1584 outer_family=${2} 1584 outer_family=${2}
1585 encap=${3} 1585 encap=${3}
1586 ll_mtu=4000 1586 ll_mtu=4000
1587 1587
1588 setup namespaces routing ${encap}${ou 1588 setup namespaces routing ${encap}${outer_family}${inner_family} || return $ksft_skip
1589 trace "${ns_a}" ${encap}_a "${ns_b} 1589 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
1590 "${ns_a}" veth_A-R1 "${ns_r1 1590 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1591 "${ns_b}" veth_B-R1 "${ns_r1 1591 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1592 1592
1593 if [ ${inner_family} -eq 4 ]; then 1593 if [ ${inner_family} -eq 4 ]; then
1594 ping=ping 1594 ping=ping
1595 dst=${tunnel4_b_addr} 1595 dst=${tunnel4_b_addr}
1596 else 1596 else
1597 ping=${ping6} 1597 ping=${ping6}
1598 dst=${tunnel6_b_addr} 1598 dst=${tunnel6_b_addr}
1599 fi 1599 fi
1600 1600
1601 if [ "${encap}" = "gue" ]; then 1601 if [ "${encap}" = "gue" ]; then
1602 encap_overhead=4 1602 encap_overhead=4
1603 else 1603 else
1604 encap_overhead=0 1604 encap_overhead=0
1605 fi 1605 fi
1606 1606
1607 if [ ${outer_family} -eq 4 ]; then 1607 if [ ${outer_family} -eq 4 ]; then
1608 # IPv4 h 1608 # IPv4 header UDP header
1609 exp_mtu=$((${ll_mtu} - 20 1609 exp_mtu=$((${ll_mtu} - 20 - 8 - ${encap_overhead}))
1610 else 1610 else
1611 # IPv6 h 1611 # IPv6 header Option 4 UDP header
1612 exp_mtu=$((${ll_mtu} - 40 1612 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - ${encap_overhead}))
1613 fi 1613 fi
1614 1614
1615 # Create route exception by exceeding 1615 # Create route exception by exceeding link layer MTU
1616 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1616 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1617 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1617 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1618 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1618 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1619 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1619 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1620 1620
1621 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 1621 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
1622 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 1622 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
1623 run_cmd ${ns_a} ${ping} -q -M want -i 1623 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1624 1624
1625 # Check that exception was created 1625 # Check that exception was created
1626 pmtu="$(route_get_dst_pmtu_from_excep 1626 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1627 check_pmtu_value ${exp_mtu} "${pmtu}" 1627 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${encap} interface"
1628 } 1628 }
1629 1629
1630 test_pmtu_ipv4_fou4_exception() { 1630 test_pmtu_ipv4_fou4_exception() {
1631 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1631 test_pmtu_ipvX_over_fouY_or_gueY 4 4 fou
1632 } 1632 }
1633 1633
1634 test_pmtu_ipv6_fou4_exception() { 1634 test_pmtu_ipv6_fou4_exception() {
1635 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1635 test_pmtu_ipvX_over_fouY_or_gueY 6 4 fou
1636 } 1636 }
1637 1637
1638 test_pmtu_ipv4_fou6_exception() { 1638 test_pmtu_ipv4_fou6_exception() {
1639 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1639 test_pmtu_ipvX_over_fouY_or_gueY 4 6 fou
1640 } 1640 }
1641 1641
1642 test_pmtu_ipv6_fou6_exception() { 1642 test_pmtu_ipv6_fou6_exception() {
1643 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1643 test_pmtu_ipvX_over_fouY_or_gueY 6 6 fou
1644 } 1644 }
1645 1645
1646 test_pmtu_ipv4_gue4_exception() { 1646 test_pmtu_ipv4_gue4_exception() {
1647 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1647 test_pmtu_ipvX_over_fouY_or_gueY 4 4 gue
1648 } 1648 }
1649 1649
1650 test_pmtu_ipv6_gue4_exception() { 1650 test_pmtu_ipv6_gue4_exception() {
1651 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1651 test_pmtu_ipvX_over_fouY_or_gueY 6 4 gue
1652 } 1652 }
1653 1653
1654 test_pmtu_ipv4_gue6_exception() { 1654 test_pmtu_ipv4_gue6_exception() {
1655 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1655 test_pmtu_ipvX_over_fouY_or_gueY 4 6 gue
1656 } 1656 }
1657 1657
1658 test_pmtu_ipv6_gue6_exception() { 1658 test_pmtu_ipv6_gue6_exception() {
1659 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1659 test_pmtu_ipvX_over_fouY_or_gueY 6 6 gue
1660 } 1660 }
1661 1661
1662 test_pmtu_ipvX_over_ipvY_exception() { 1662 test_pmtu_ipvX_over_ipvY_exception() {
1663 inner=${1} 1663 inner=${1}
1664 outer=${2} 1664 outer=${2}
1665 ll_mtu=4000 1665 ll_mtu=4000
1666 1666
1667 setup namespaces routing ip${inner}ip 1667 setup namespaces routing ip${inner}ip${outer} || return $ksft_skip
1668 1668
1669 trace "${ns_a}" ip_a "${ns_b} 1669 trace "${ns_a}" ip_a "${ns_b}" ip_b \
1670 "${ns_a}" veth_A-R1 "${ns_r1 1670 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1671 "${ns_b}" veth_B-R1 "${ns_r1 1671 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1672 1672
1673 if [ ${inner} -eq 4 ]; then 1673 if [ ${inner} -eq 4 ]; then
1674 ping=ping 1674 ping=ping
1675 dst=${tunnel4_b_addr} 1675 dst=${tunnel4_b_addr}
1676 else 1676 else
1677 ping=${ping6} 1677 ping=${ping6}
1678 dst=${tunnel6_b_addr} 1678 dst=${tunnel6_b_addr}
1679 fi 1679 fi
1680 1680
1681 if [ ${outer} -eq 4 ]; then 1681 if [ ${outer} -eq 4 ]; then
1682 # IPv4 h 1682 # IPv4 header
1683 exp_mtu=$((${ll_mtu} - 20)) 1683 exp_mtu=$((${ll_mtu} - 20))
1684 else 1684 else
1685 # IPv6 h 1685 # IPv6 header Option 4
1686 exp_mtu=$((${ll_mtu} - 40 1686 exp_mtu=$((${ll_mtu} - 40 - 8))
1687 fi 1687 fi
1688 1688
1689 # Create route exception by exceeding 1689 # Create route exception by exceeding link layer MTU
1690 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1690 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1691 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1691 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1692 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1692 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1693 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1693 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1694 1694
1695 mtu "${ns_a}" ip_a $((${ll_mtu} + 100 1695 mtu "${ns_a}" ip_a $((${ll_mtu} + 1000)) || return
1696 mtu "${ns_b}" ip_b $((${ll_mtu} + 100 1696 mtu "${ns_b}" ip_b $((${ll_mtu} + 1000)) || return
1697 run_cmd ${ns_a} ${ping} -q -M want -i 1697 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1698 1698
1699 # Check that exception was created 1699 # Check that exception was created
1700 pmtu="$(route_get_dst_pmtu_from_excep 1700 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1701 check_pmtu_value ${exp_mtu} "${pmtu}" 1701 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ip${inner}ip${outer} interface"
1702 } 1702 }
1703 1703
1704 test_pmtu_ipv4_ipv4_exception() { 1704 test_pmtu_ipv4_ipv4_exception() {
1705 test_pmtu_ipvX_over_ipvY_exception 4 1705 test_pmtu_ipvX_over_ipvY_exception 4 4
1706 } 1706 }
1707 1707
1708 test_pmtu_ipv6_ipv4_exception() { 1708 test_pmtu_ipv6_ipv4_exception() {
1709 test_pmtu_ipvX_over_ipvY_exception 6 1709 test_pmtu_ipvX_over_ipvY_exception 6 4
1710 } 1710 }
1711 1711
1712 test_pmtu_ipv4_ipv6_exception() { 1712 test_pmtu_ipv4_ipv6_exception() {
1713 test_pmtu_ipvX_over_ipvY_exception 4 1713 test_pmtu_ipvX_over_ipvY_exception 4 6
1714 } 1714 }
1715 1715
1716 test_pmtu_ipv6_ipv6_exception() { 1716 test_pmtu_ipv6_ipv6_exception() {
1717 test_pmtu_ipvX_over_ipvY_exception 6 1717 test_pmtu_ipvX_over_ipvY_exception 6 6
1718 } 1718 }
1719 1719
1720 test_pmtu_vti4_exception() { 1720 test_pmtu_vti4_exception() {
1721 setup namespaces veth vti4 xfrm4 || r 1721 setup namespaces veth vti4 xfrm4 || return $ksft_skip
1722 trace "${ns_a}" veth_a "${ns_b}" v 1722 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1723 "${ns_a}" vti4_a "${ns_b}" v 1723 "${ns_a}" vti4_a "${ns_b}" vti4_b
1724 1724
1725 veth_mtu=1500 1725 veth_mtu=1500
1726 vti_mtu=$((veth_mtu - 20)) 1726 vti_mtu=$((veth_mtu - 20))
1727 1727
1728 # SPI 1728 # SPI SN IV ICV pad length next header
1729 esp_payload_rfc4106=$((vti_mtu - 4 1729 esp_payload_rfc4106=$((vti_mtu - 4 - 4 - 8 - 16 - 1 - 1))
1730 ping_payload=$((esp_payload_rfc4106 - 1730 ping_payload=$((esp_payload_rfc4106 - 28))
1731 1731
1732 mtu "${ns_a}" veth_a ${veth_mtu} 1732 mtu "${ns_a}" veth_a ${veth_mtu}
1733 mtu "${ns_b}" veth_b ${veth_mtu} 1733 mtu "${ns_b}" veth_b ${veth_mtu}
1734 mtu "${ns_a}" vti4_a ${vti_mtu} 1734 mtu "${ns_a}" vti4_a ${vti_mtu}
1735 mtu "${ns_b}" vti4_b ${vti_mtu} 1735 mtu "${ns_b}" vti4_b ${vti_mtu}
1736 1736
1737 # Send DF packet without exceeding li 1737 # Send DF packet without exceeding link layer MTU, check that no
1738 # exception is created 1738 # exception is created
1739 run_cmd ${ns_a} ping -q -M want -i 0. 1739 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 1740 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1741 check_pmtu_value "" "${pmtu}" "sendin 1741 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1742 1742
1743 # Now exceed link layer MTU by one by 1743 # Now exceed link layer MTU by one byte, check that exception is created
1744 # with the right PMTU value 1744 # with the right PMTU value
1745 run_cmd ${ns_a} ping -q -M want -i 0. 1745 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 1746 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1747 check_pmtu_value "${esp_payload_rfc41 1747 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1748 } 1748 }
1749 1749
1750 test_pmtu_vti6_exception() { 1750 test_pmtu_vti6_exception() {
1751 setup namespaces veth vti6 xfrm6 || r 1751 setup namespaces veth vti6 xfrm6 || return $ksft_skip
1752 trace "${ns_a}" veth_a "${ns_b}" v 1752 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1753 "${ns_a}" vti6_a "${ns_b}" v 1753 "${ns_a}" vti6_a "${ns_b}" vti6_b
1754 fail=0 1754 fail=0
1755 1755
1756 # Create route exception by exceeding 1756 # Create route exception by exceeding link layer MTU
1757 mtu "${ns_a}" veth_a 4000 1757 mtu "${ns_a}" veth_a 4000
1758 mtu "${ns_b}" veth_b 4000 1758 mtu "${ns_b}" veth_b 4000
1759 mtu "${ns_a}" vti6_a 5000 1759 mtu "${ns_a}" vti6_a 5000
1760 mtu "${ns_b}" vti6_b 5000 1760 mtu "${ns_b}" vti6_b 5000
1761 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1761 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1762 1762
1763 # Check that exception was created 1763 # Check that exception was created
1764 pmtu="$(route_get_dst_pmtu_from_excep 1764 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1765 check_pmtu_value any "${pmtu}" "creat 1765 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1766 1766
1767 # Decrease tunnel MTU, check for PMTU 1767 # Decrease tunnel MTU, check for PMTU decrease in route exception
1768 mtu "${ns_a}" vti6_a 3000 1768 mtu "${ns_a}" vti6_a 3000
1769 pmtu="$(route_get_dst_pmtu_from_excep 1769 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1770 check_pmtu_value "3000" "${pmtu}" "de 1770 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1771 1771
1772 # Increase tunnel MTU, check for PMTU 1772 # Increase tunnel MTU, check for PMTU increase in route exception
1773 mtu "${ns_a}" vti6_a 9000 1773 mtu "${ns_a}" vti6_a 9000
1774 pmtu="$(route_get_dst_pmtu_from_excep 1774 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1775 check_pmtu_value "9000" "${pmtu}" "in 1775 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1776 1776
1777 return ${fail} 1777 return ${fail}
1778 } 1778 }
1779 1779
1780 test_pmtu_vti4_udp_exception() { 1780 test_pmtu_vti4_udp_exception() {
1781 setup namespaces veth vti4 xfrm4udp | 1781 setup namespaces veth vti4 xfrm4udp || return $ksft_skip
1782 trace "${ns_a}" veth_a "${ns_b}" v 1782 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1783 "${ns_a}" vti4_a "${ns_b}" v 1783 "${ns_a}" vti4_a "${ns_b}" vti4_b
1784 1784
1785 veth_mtu=1500 1785 veth_mtu=1500
1786 vti_mtu=$((veth_mtu - 20)) 1786 vti_mtu=$((veth_mtu - 20))
1787 1787
1788 # UDP 1788 # UDP SPI SN IV ICV pad length next header
1789 esp_payload_rfc4106=$((vti_mtu - 8 1789 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1790 ping_payload=$((esp_payload_rfc4106 - 1790 ping_payload=$((esp_payload_rfc4106 - 28))
1791 1791
1792 mtu "${ns_a}" veth_a ${veth_mtu} 1792 mtu "${ns_a}" veth_a ${veth_mtu}
1793 mtu "${ns_b}" veth_b ${veth_mtu} 1793 mtu "${ns_b}" veth_b ${veth_mtu}
1794 mtu "${ns_a}" vti4_a ${vti_mtu} 1794 mtu "${ns_a}" vti4_a ${vti_mtu}
1795 mtu "${ns_b}" vti4_b ${vti_mtu} 1795 mtu "${ns_b}" vti4_b ${vti_mtu}
1796 1796
1797 # Send DF packet without exceeding li 1797 # Send DF packet without exceeding link layer MTU, check that no
1798 # exception is created 1798 # exception is created
1799 run_cmd ${ns_a} ping -q -M want -i 0. 1799 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1800 pmtu="$(route_get_dst_pmtu_from_excep 1800 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1801 check_pmtu_value "" "${pmtu}" "sendin 1801 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1802 1802
1803 # Now exceed link layer MTU by one by 1803 # Now exceed link layer MTU by one byte, check that exception is created
1804 # with the right PMTU value 1804 # with the right PMTU value
1805 run_cmd ${ns_a} ping -q -M want -i 0. 1805 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload + 1)) ${tunnel4_b_addr}
1806 pmtu="$(route_get_dst_pmtu_from_excep 1806 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1807 check_pmtu_value "${esp_payload_rfc41 1807 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1808 } 1808 }
1809 1809
1810 test_pmtu_vti6_udp_exception() { 1810 test_pmtu_vti6_udp_exception() {
1811 setup namespaces veth vti6 xfrm6udp | 1811 setup namespaces veth vti6 xfrm6udp || return $ksft_skip
1812 trace "${ns_a}" veth_a "${ns_b}" v 1812 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1813 "${ns_a}" vti6_a "${ns_b}" v 1813 "${ns_a}" vti6_a "${ns_b}" vti6_b
1814 fail=0 1814 fail=0
1815 1815
1816 # Create route exception by exceeding 1816 # Create route exception by exceeding link layer MTU
1817 mtu "${ns_a}" veth_a 4000 1817 mtu "${ns_a}" veth_a 4000
1818 mtu "${ns_b}" veth_b 4000 1818 mtu "${ns_b}" veth_b 4000
1819 mtu "${ns_a}" vti6_a 5000 1819 mtu "${ns_a}" vti6_a 5000
1820 mtu "${ns_b}" vti6_b 5000 1820 mtu "${ns_b}" vti6_b 5000
1821 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1821 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1822 1822
1823 # Check that exception was created 1823 # Check that exception was created
1824 pmtu="$(route_get_dst_pmtu_from_excep 1824 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1825 check_pmtu_value any "${pmtu}" "creat 1825 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1826 1826
1827 # Decrease tunnel MTU, check for PMTU 1827 # Decrease tunnel MTU, check for PMTU decrease in route exception
1828 mtu "${ns_a}" vti6_a 3000 1828 mtu "${ns_a}" vti6_a 3000
1829 pmtu="$(route_get_dst_pmtu_from_excep 1829 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1830 check_pmtu_value "3000" "${pmtu}" "de 1830 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1831 1831
1832 # Increase tunnel MTU, check for PMTU 1832 # Increase tunnel MTU, check for PMTU increase in route exception
1833 mtu "${ns_a}" vti6_a 9000 1833 mtu "${ns_a}" vti6_a 9000
1834 pmtu="$(route_get_dst_pmtu_from_excep 1834 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1835 check_pmtu_value "9000" "${pmtu}" "in 1835 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1836 1836
1837 return ${fail} 1837 return ${fail}
1838 } 1838 }
1839 1839
1840 test_pmtu_vti4_udp_routed_exception() { 1840 test_pmtu_vti4_udp_routed_exception() {
1841 setup namespaces routing vti4routed x 1841 setup namespaces routing vti4routed xfrm4udprouted || return $ksft_skip
1842 trace "${ns_a}" veth_A-R1 "${ns_b} 1842 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1843 "${ns_a}" vti4_a "${ns_b} 1843 "${ns_a}" vti4_a "${ns_b}" vti4_b
1844 1844
1845 veth_mtu=1500 1845 veth_mtu=1500
1846 vti_mtu=$((veth_mtu - 20)) 1846 vti_mtu=$((veth_mtu - 20))
1847 1847
1848 # UDP 1848 # UDP SPI SN IV ICV pad length next header
1849 esp_payload_rfc4106=$((vti_mtu - 8 1849 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1850 ping_payload=$((esp_payload_rfc4106 - 1850 ping_payload=$((esp_payload_rfc4106 - 28))
1851 1851
1852 mtu "${ns_a}" veth_A-R1 ${veth_mtu} 1852 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1853 mtu "${ns_r1}" veth_R1-A ${veth_mtu} 1853 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1854 mtu "${ns_b}" veth_B-R1 ${veth_mtu} 1854 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1855 mtu "${ns_r1}" veth_R1-B ${veth_mtu} 1855 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1856 1856
1857 mtu "${ns_a}" vti4_a ${vti_mtu} 1857 mtu "${ns_a}" vti4_a ${vti_mtu}
1858 mtu "${ns_b}" vti4_b ${vti_mtu} 1858 mtu "${ns_b}" vti4_b ${vti_mtu}
1859 1859
1860 # Send DF packet without exceeding li 1860 # Send DF packet without exceeding link layer MTU, check that no
1861 # exception is created 1861 # exception is created
1862 run_cmd ${ns_a} ping -q -M want -i 0. 1862 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel4_b_addr}
1863 pmtu="$(route_get_dst_pmtu_from_excep 1863 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1864 check_pmtu_value "" "${pmtu}" "sendin 1864 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1865 1865
1866 # Now decrease link layer MTU by 8 by 1866 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1867 # with the right PMTU value 1867 # with the right PMTU value
1868 mtu "${ns_r1}" veth_R1-B $((veth_mtu 1868 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1869 run_cmd ${ns_a} ping -q -M want -i 0. 1869 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s $((ping_payload)) ${tunnel4_b_addr}
1870 pmtu="$(route_get_dst_pmtu_from_excep 1870 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1871 check_pmtu_value "$((esp_payload_rfc4 1871 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1872 } 1872 }
1873 1873
1874 test_pmtu_vti6_udp_routed_exception() { 1874 test_pmtu_vti6_udp_routed_exception() {
1875 setup namespaces routing vti6routed x 1875 setup namespaces routing vti6routed xfrm6udprouted || return $ksft_skip
1876 trace "${ns_a}" veth_A-R1 "${ns_b} 1876 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1877 "${ns_a}" vti6_a "${ns_b} 1877 "${ns_a}" vti6_a "${ns_b}" vti6_b
1878 1878
1879 veth_mtu=1500 1879 veth_mtu=1500
1880 vti_mtu=$((veth_mtu - 40)) 1880 vti_mtu=$((veth_mtu - 40))
1881 1881
1882 # UDP 1882 # UDP SPI SN IV ICV pad length next header
1883 esp_payload_rfc4106=$((vti_mtu - 8 1883 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1884 ping_payload=$((esp_payload_rfc4106 - 1884 ping_payload=$((esp_payload_rfc4106 - 48))
1885 1885
1886 mtu "${ns_a}" veth_A-R1 ${veth_mtu} 1886 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1887 mtu "${ns_r1}" veth_R1-A ${veth_mtu} 1887 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1888 mtu "${ns_b}" veth_B-R1 ${veth_mtu} 1888 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1889 mtu "${ns_r1}" veth_R1-B ${veth_mtu} 1889 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1890 1890
1891 # mtu "${ns_a}" vti6_a ${vti_mtu} 1891 # mtu "${ns_a}" vti6_a ${vti_mtu}
1892 # mtu "${ns_b}" vti6_b ${vti_mtu} 1892 # mtu "${ns_b}" vti6_b ${vti_mtu}
1893 1893
1894 run_cmd ${ns_a} ${ping6} -q -M want - 1894 run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel6_b_addr}
1895 1895
1896 # Check that exception was not create 1896 # Check that exception was not created
1897 pmtu="$(route_get_dst_pmtu_from_excep 1897 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1898 check_pmtu_value "" "${pmtu}" "sendin 1898 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1899 1899
1900 # Now decrease link layer MTU by 8 by 1900 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1901 # with the right PMTU value 1901 # with the right PMTU value
1902 mtu "${ns_r1}" veth_R1-B $((veth_mtu 1902 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1903 run_cmd ${ns_a} ${ping6} -q -M want - 1903 run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s $((ping_payload)) ${tunnel6_b_addr}
1904 pmtu="$(route_get_dst_pmtu_from_excep 1904 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1905 check_pmtu_value "$((esp_payload_rfc4 1905 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1906 1906
1907 } 1907 }
1908 1908
1909 test_pmtu_vti4_default_mtu() { 1909 test_pmtu_vti4_default_mtu() {
1910 setup namespaces veth vti4 || return 1910 setup namespaces veth vti4 || return $ksft_skip
1911 1911
1912 # Check that MTU of vti device is MTU 1912 # Check that MTU of vti device is MTU of veth minus IPv4 header length
1913 veth_mtu="$(link_get_mtu "${ns_a}" ve 1913 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1914 vti4_mtu="$(link_get_mtu "${ns_a}" vt 1914 vti4_mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1915 if [ $((veth_mtu - vti4_mtu)) -ne 20 1915 if [ $((veth_mtu - vti4_mtu)) -ne 20 ]; then
1916 err " vti MTU ${vti4_mtu} is 1916 err " vti MTU ${vti4_mtu} is not veth MTU ${veth_mtu} minus IPv4 header length"
1917 return 1 1917 return 1
1918 fi 1918 fi
1919 } 1919 }
1920 1920
1921 test_pmtu_vti6_default_mtu() { 1921 test_pmtu_vti6_default_mtu() {
1922 setup namespaces veth vti6 || return 1922 setup namespaces veth vti6 || return $ksft_skip
1923 1923
1924 # Check that MTU of vti device is MTU 1924 # Check that MTU of vti device is MTU of veth minus IPv6 header length
1925 veth_mtu="$(link_get_mtu "${ns_a}" ve 1925 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1926 vti6_mtu="$(link_get_mtu "${ns_a}" vt 1926 vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1927 if [ $((veth_mtu - vti6_mtu)) -ne 40 1927 if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then
1928 err " vti MTU ${vti6_mtu} is 1928 err " vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length"
1929 return 1 1929 return 1
1930 fi 1930 fi
1931 } 1931 }
1932 1932
1933 test_pmtu_vti4_link_add_mtu() { 1933 test_pmtu_vti4_link_add_mtu() {
1934 setup namespaces || return $ksft_skip 1934 setup namespaces || return $ksft_skip
1935 1935
1936 run_cmd ${ns_a} ip link add vti4_a ty 1936 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 1937 [ $? -ne 0 ] && err " vti not supported" && return $ksft_skip
1938 run_cmd ${ns_a} ip link del vti4_a 1938 run_cmd ${ns_a} ip link del vti4_a
1939 1939
1940 fail=0 1940 fail=0
1941 1941
1942 min=68 1942 min=68
1943 max=$((65535 - 20)) 1943 max=$((65535 - 20))
1944 # Check invalid values first 1944 # Check invalid values first
1945 for v in $((min - 1)) $((max + 1)); d 1945 for v in $((min - 1)) $((max + 1)); do
1946 run_cmd ${ns_a} ip link add v 1946 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 1947 # This can fail, or MTU can be adjusted to a proper value
1948 [ $? -ne 0 ] && continue 1948 [ $? -ne 0 ] && continue
1949 mtu="$(link_get_mtu "${ns_a}" 1949 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1950 if [ ${mtu} -lt ${min} -o ${m 1950 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1951 err " vti tunnel cre 1951 err " vti tunnel created with invalid MTU ${mtu}"
1952 fail=1 1952 fail=1
1953 fi 1953 fi
1954 run_cmd ${ns_a} ip link del v 1954 run_cmd ${ns_a} ip link del vti4_a
1955 done 1955 done
1956 1956
1957 # Now check valid values 1957 # Now check valid values
1958 for v in ${min} 1300 ${max}; do 1958 for v in ${min} 1300 ${max}; do
1959 run_cmd ${ns_a} ip link add v 1959 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 "${ns_a}" 1960 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1961 run_cmd ${ns_a} ip link del v 1961 run_cmd ${ns_a} ip link del vti4_a
1962 if [ "${mtu}" != "${v}" ]; th 1962 if [ "${mtu}" != "${v}" ]; then
1963 err " vti MTU ${mtu} 1963 err " vti MTU ${mtu} doesn't match configured value ${v}"
1964 fail=1 1964 fail=1
1965 fi 1965 fi
1966 done 1966 done
1967 1967
1968 return ${fail} 1968 return ${fail}
1969 } 1969 }
1970 1970
1971 test_pmtu_vti6_link_add_mtu() { 1971 test_pmtu_vti6_link_add_mtu() {
1972 setup namespaces || return $ksft_skip 1972 setup namespaces || return $ksft_skip
1973 1973
1974 run_cmd ${ns_a} ip link add vti6_a ty 1974 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 1975 [ $? -ne 0 ] && err " vti6 not supported" && return $ksft_skip
1976 run_cmd ${ns_a} ip link del vti6_a 1976 run_cmd ${ns_a} ip link del vti6_a
1977 1977
1978 fail=0 1978 fail=0
1979 1979
1980 min=68 # vti6 can ca 1980 min=68 # vti6 can carry IPv4 packets too
1981 max=$((65535 - 40)) 1981 max=$((65535 - 40))
1982 # Check invalid values first 1982 # Check invalid values first
1983 for v in $((min - 1)) $((max + 1)); d 1983 for v in $((min - 1)) $((max + 1)); do
1984 run_cmd ${ns_a} ip link add v 1984 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 1985 # This can fail, or MTU can be adjusted to a proper value
1986 [ $? -ne 0 ] && continue 1986 [ $? -ne 0 ] && continue
1987 mtu="$(link_get_mtu "${ns_a}" 1987 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1988 if [ ${mtu} -lt ${min} -o ${m 1988 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1989 err " vti6 tunnel cr 1989 err " vti6 tunnel created with invalid MTU ${v}"
1990 fail=1 1990 fail=1
1991 fi 1991 fi
1992 run_cmd ${ns_a} ip link del v 1992 run_cmd ${ns_a} ip link del vti6_a
1993 done 1993 done
1994 1994
1995 # Now check valid values 1995 # Now check valid values
1996 for v in 68 1280 1300 $((65535 - 40)) 1996 for v in 68 1280 1300 $((65535 - 40)); do
1997 run_cmd ${ns_a} ip link add v 1997 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 "${ns_a}" 1998 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1999 run_cmd ${ns_a} ip link del v 1999 run_cmd ${ns_a} ip link del vti6_a
2000 if [ "${mtu}" != "${v}" ]; th 2000 if [ "${mtu}" != "${v}" ]; then
2001 err " vti6 MTU ${mtu 2001 err " vti6 MTU ${mtu} doesn't match configured value ${v}"
2002 fail=1 2002 fail=1
2003 fi 2003 fi
2004 done 2004 done
2005 2005
2006 return ${fail} 2006 return ${fail}
2007 } 2007 }
2008 2008
2009 test_pmtu_vti6_link_change_mtu() { 2009 test_pmtu_vti6_link_change_mtu() {
2010 setup namespaces || return $ksft_skip 2010 setup namespaces || return $ksft_skip
2011 2011
2012 run_cmd ${ns_a} ip link add dummy0 mt 2012 run_cmd ${ns_a} ip link add dummy0 mtu 1500 type dummy
2013 [ $? -ne 0 ] && err " dummy not supp 2013 [ $? -ne 0 ] && err " dummy not supported" && return $ksft_skip
2014 run_cmd ${ns_a} ip link add dummy1 mt 2014 run_cmd ${ns_a} ip link add dummy1 mtu 3000 type dummy
2015 run_cmd ${ns_a} ip link set dummy0 up 2015 run_cmd ${ns_a} ip link set dummy0 up
2016 run_cmd ${ns_a} ip link set dummy1 up 2016 run_cmd ${ns_a} ip link set dummy1 up
2017 2017
2018 run_cmd ${ns_a} ip addr add ${dummy6_ 2018 run_cmd ${ns_a} ip addr add ${dummy6_0_prefix}1/${dummy6_mask} dev dummy0
2019 run_cmd ${ns_a} ip addr add ${dummy6_ 2019 run_cmd ${ns_a} ip addr add ${dummy6_1_prefix}1/${dummy6_mask} dev dummy1
2020 2020
2021 fail=0 2021 fail=0
2022 2022
2023 # Create vti6 interface bound to devi 2023 # Create vti6 interface bound to device, passing MTU, check it
2024 run_cmd ${ns_a} ip link add vti6_a mt 2024 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 "${ns_a}" vti6_a) 2025 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2026 if [ ${mtu} -ne 1300 ]; then 2026 if [ ${mtu} -ne 1300 ]; then
2027 err " vti6 MTU ${mtu} doesn' 2027 err " vti6 MTU ${mtu} doesn't match configured value 1300"
2028 fail=1 2028 fail=1
2029 fi 2029 fi
2030 2030
2031 # Move to another device with differe 2031 # Move to another device with different MTU, without passing MTU, check
2032 # MTU is adjusted 2032 # MTU is adjusted
2033 run_cmd ${ns_a} ip link set vti6_a ty 2033 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 "${ns_a}" vti6_a) 2034 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2035 if [ ${mtu} -ne $((3000 - 40)) ]; the 2035 if [ ${mtu} -ne $((3000 - 40)) ]; then
2036 err " vti MTU ${mtu} is not 2036 err " vti MTU ${mtu} is not dummy MTU 3000 minus IPv6 header length"
2037 fail=1 2037 fail=1
2038 fi 2038 fi
2039 2039
2040 # Move it back, passing MTU, check MT 2040 # Move it back, passing MTU, check MTU is not overridden
2041 run_cmd ${ns_a} ip link set vti6_a mt 2041 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 "${ns_a}" vti6_a) 2042 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2043 if [ ${mtu} -ne 1280 ]; then 2043 if [ ${mtu} -ne 1280 ]; then
2044 err " vti6 MTU ${mtu} doesn' 2044 err " vti6 MTU ${mtu} doesn't match configured value 1280"
2045 fail=1 2045 fail=1
2046 fi 2046 fi
2047 2047
2048 return ${fail} 2048 return ${fail}
2049 } 2049 }
2050 2050
2051 check_command() { 2051 check_command() {
2052 cmd=${1} 2052 cmd=${1}
2053 2053
2054 if ! which ${cmd} > /dev/null 2>&1; t 2054 if ! which ${cmd} > /dev/null 2>&1; then
2055 err " missing required comma 2055 err " missing required command: '${cmd}'"
2056 return 1 2056 return 1
2057 fi 2057 fi
2058 return 0 2058 return 0
2059 } 2059 }
2060 2060
2061 check_running() { 2061 check_running() {
2062 pid=${1} 2062 pid=${1}
2063 cmd=${2} 2063 cmd=${2}
2064 2064
2065 [ "$(cat /proc/${pid}/cmdline 2>/dev/ 2065 [ "$(cat /proc/${pid}/cmdline 2>/dev/null | tr -d '\0')" = "{cmd}" ]
2066 } 2066 }
2067 2067
2068 test_cleanup_vxlanX_exception() { 2068 test_cleanup_vxlanX_exception() {
2069 outer="${1}" 2069 outer="${1}"
2070 encap="vxlan" 2070 encap="vxlan"
2071 ll_mtu=4000 2071 ll_mtu=4000
2072 2072
2073 check_command taskset || return $ksft 2073 check_command taskset || return $ksft_skip
2074 cpu_list=$(grep -m 2 processor /proc/ 2074 cpu_list=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2)
2075 2075
2076 setup namespaces routing ${encap}${ou 2076 setup namespaces routing ${encap}${outer} || return $ksft_skip
2077 trace "${ns_a}" ${encap}_a "${ns_b} 2077 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
2078 "${ns_a}" veth_A-R1 "${ns_r1 2078 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2079 "${ns_b}" veth_B-R1 "${ns_r1 2079 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
2080 2080
2081 # Create route exception by exceeding 2081 # Create route exception by exceeding link layer MTU
2082 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 2082 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
2083 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 2083 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
2084 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 2084 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
2085 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 2085 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
2086 2086
2087 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 2087 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
2088 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 2088 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
2089 2089
2090 # Fill exception cache for multiple C 2090 # Fill exception cache for multiple CPUs (2)
2091 # we can always use inner IPv4 for th 2091 # we can always use inner IPv4 for that
2092 for cpu in ${cpu_list}; do 2092 for cpu in ${cpu_list}; do
2093 run_cmd taskset --cpu-list ${ 2093 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 2094 done
2095 2095
2096 ${ns_a} ip link del dev veth_A-R1 & 2096 ${ns_a} ip link del dev veth_A-R1 &
2097 iplink_pid=$! 2097 iplink_pid=$!
2098 for i in $(seq 1 20); do 2098 for i in $(seq 1 20); do
2099 check_running ${iplink_pid} " 2099 check_running ${iplink_pid} "iplinkdeldevveth_A-R1" || return 0
2100 sleep 0.1 2100 sleep 0.1
2101 done 2101 done
2102 err " can't delete veth device in a 2102 err " can't delete veth device in a timely manner, PMTU dst likely leaked"
2103 return 1 2103 return 1
2104 } 2104 }
2105 2105
2106 test_cleanup_ipv6_exception() { 2106 test_cleanup_ipv6_exception() {
2107 test_cleanup_vxlanX_exception 6 2107 test_cleanup_vxlanX_exception 6
2108 } 2108 }
2109 2109
2110 test_cleanup_ipv4_exception() { 2110 test_cleanup_ipv4_exception() {
2111 test_cleanup_vxlanX_exception 4 2111 test_cleanup_vxlanX_exception 4
2112 } 2112 }
2113 2113
2114 run_test() { 2114 run_test() {
2115 ( 2115 (
2116 tname="$1" 2116 tname="$1"
2117 tdesc="$2" 2117 tdesc="$2"
2118 2118
2119 unset IFS 2119 unset IFS
2120 2120
2121 # Since cleanup() relies on variables 2121 # Since cleanup() relies on variables modified by this subshell, it
2122 # has to run in this context. 2122 # has to run in this context.
2123 trap cleanup EXIT 2123 trap cleanup EXIT
2124 2124
2125 if [ "$VERBOSE" = "1" ]; then 2125 if [ "$VERBOSE" = "1" ]; then
2126 printf "\n################### 2126 printf "\n##########################################################################\n\n"
2127 fi 2127 fi
2128 2128
2129 eval test_${tname} 2129 eval test_${tname}
2130 ret=$? 2130 ret=$?
2131 2131
2132 if [ $ret -eq 0 ]; then 2132 if [ $ret -eq 0 ]; then
2133 printf "TEST: %-60s [ OK ]\n 2133 printf "TEST: %-60s [ OK ]\n" "${tdesc}"
2134 elif [ $ret -eq 1 ]; then 2134 elif [ $ret -eq 1 ]; then
2135 printf "TEST: %-60s [FAIL]\n 2135 printf "TEST: %-60s [FAIL]\n" "${tdesc}"
2136 if [ "${PAUSE_ON_FAIL}" = "ye 2136 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
2137 echo 2137 echo
2138 echo "Pausing. Hit en 2138 echo "Pausing. Hit enter to continue"
2139 read a 2139 read a
2140 fi 2140 fi
2141 err_flush 2141 err_flush
2142 exit 1 2142 exit 1
2143 elif [ $ret -eq $ksft_skip ]; then 2143 elif [ $ret -eq $ksft_skip ]; then
2144 printf "TEST: %-60s [SKIP]\n 2144 printf "TEST: %-60s [SKIP]\n" "${tdesc}"
2145 err_flush 2145 err_flush
2146 fi 2146 fi
2147 2147
2148 return $ret 2148 return $ret
2149 ) 2149 )
2150 ret=$? 2150 ret=$?
2151 case $ret in 2151 case $ret in
2152 0) 2152 0)
2153 all_skipped=false 2153 all_skipped=false
2154 [ $exitcode -eq $ksft 2154 [ $exitcode -eq $ksft_skip ] && exitcode=0
2155 ;; 2155 ;;
2156 $ksft_skip) 2156 $ksft_skip)
2157 [ $all_skipped = true 2157 [ $all_skipped = true ] && exitcode=$ksft_skip
2158 ;; 2158 ;;
2159 *) 2159 *)
2160 all_skipped=false 2160 all_skipped=false
2161 exitcode=1 2161 exitcode=1
2162 ;; 2162 ;;
2163 esac 2163 esac
2164 2164
2165 return $ret 2165 return $ret
2166 } 2166 }
2167 2167
2168 run_test_nh() { 2168 run_test_nh() {
2169 tname="$1" 2169 tname="$1"
2170 tdesc="$2" 2170 tdesc="$2"
2171 2171
2172 USE_NH=yes 2172 USE_NH=yes
2173 run_test "${tname}" "${tdesc} - nexth 2173 run_test "${tname}" "${tdesc} - nexthop objects"
2174 USE_NH=no 2174 USE_NH=no
2175 } 2175 }
2176 2176
2177 test_list_flush_ipv4_exception() { 2177 test_list_flush_ipv4_exception() {
2178 setup namespaces routing || return $k 2178 setup namespaces routing || return $ksft_skip
2179 trace "${ns_a}" veth_A-R1 "${ns_r 2179 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2180 "${ns_r1}" veth_R1-B "${ns_b 2180 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2181 "${ns_a}" veth_A-R2 "${ns_r 2181 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2182 "${ns_r2}" veth_R2-B "${ns_b 2182 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2183 2183
2184 dst_prefix1="${prefix4}.${b_r1}." 2184 dst_prefix1="${prefix4}.${b_r1}."
2185 dst2="${prefix4}.${b_r2}.1" 2185 dst2="${prefix4}.${b_r2}.1"
2186 2186
2187 # Set up initial MTU values 2187 # Set up initial MTU values
2188 mtu "${ns_a}" veth_A-R1 2000 2188 mtu "${ns_a}" veth_A-R1 2000
2189 mtu "${ns_r1}" veth_R1-A 2000 2189 mtu "${ns_r1}" veth_R1-A 2000
2190 mtu "${ns_r1}" veth_R1-B 1500 2190 mtu "${ns_r1}" veth_R1-B 1500
2191 mtu "${ns_b}" veth_B-R1 1500 2191 mtu "${ns_b}" veth_B-R1 1500
2192 2192
2193 mtu "${ns_a}" veth_A-R2 2000 2193 mtu "${ns_a}" veth_A-R2 2000
2194 mtu "${ns_r2}" veth_R2-A 2000 2194 mtu "${ns_r2}" veth_R2-A 2000
2195 mtu "${ns_r2}" veth_R2-B 1500 2195 mtu "${ns_r2}" veth_R2-B 1500
2196 mtu "${ns_b}" veth_B-R2 1500 2196 mtu "${ns_b}" veth_B-R2 1500
2197 2197
2198 fail=0 2198 fail=0
2199 2199
2200 # Add 100 addresses for veth endpoint 2200 # Add 100 addresses for veth endpoint on B reached by default A route
2201 for i in $(seq 100 199); do 2201 for i in $(seq 100 199); do
2202 run_cmd ${ns_b} ip addr add " 2202 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2203 done 2203 done
2204 2204
2205 # Create 100 cached route exceptions 2205 # Create 100 cached route exceptions for path via R1, one via R2. Note
2206 # that with IPv4 we need to actually 2206 # that with IPv4 we need to actually cause a route lookup that matches
2207 # the exception caused by ICMP, in or 2207 # the exception caused by ICMP, in order to actually have a cached
2208 # route, so we need to ping each dest 2208 # route, so we need to ping each destination twice
2209 for i in $(seq 100 199); do 2209 for i in $(seq 100 199); do
2210 run_cmd ${ns_a} ping -q -M wa 2210 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst_prefix1}${i}"
2211 done 2211 done
2212 run_cmd ${ns_a} ping -q -M want -i 0. 2212 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}"
2213 2213
2214 if [ "$(${ns_a} ip -oneline route lis 2214 if [ "$(${ns_a} ip -oneline route list cache | wc -l)" -ne 101 ]; then
2215 err " can't list cached exce 2215 err " can't list cached exceptions"
2216 fail=1 2216 fail=1
2217 fi 2217 fi
2218 2218
2219 run_cmd ${ns_a} ip route flush cache 2219 run_cmd ${ns_a} ip route flush cache
2220 pmtu1="$(route_get_dst_pmtu_from_exce 2220 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}1)"
2221 pmtu2="$(route_get_dst_pmtu_from_exce 2221 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}2)"
2222 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 2222 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2223 [ -n "$(${ns_a} ip route list cach 2223 [ -n "$(${ns_a} ip route list cache)" ]; then
2224 err " can't flush cached exc 2224 err " can't flush cached exceptions"
2225 fail=1 2225 fail=1
2226 fi 2226 fi
2227 2227
2228 return ${fail} 2228 return ${fail}
2229 } 2229 }
2230 2230
2231 test_list_flush_ipv6_exception() { 2231 test_list_flush_ipv6_exception() {
2232 setup namespaces routing || return $k 2232 setup namespaces routing || return $ksft_skip
2233 trace "${ns_a}" veth_A-R1 "${ns_r 2233 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2234 "${ns_r1}" veth_R1-B "${ns_b 2234 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2235 "${ns_a}" veth_A-R2 "${ns_r 2235 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2236 "${ns_r2}" veth_R2-B "${ns_b 2236 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2237 2237
2238 dst_prefix1="${prefix6}:${b_r1}::" 2238 dst_prefix1="${prefix6}:${b_r1}::"
2239 dst2="${prefix6}:${b_r2}::1" 2239 dst2="${prefix6}:${b_r2}::1"
2240 2240
2241 # Set up initial MTU values 2241 # Set up initial MTU values
2242 mtu "${ns_a}" veth_A-R1 2000 2242 mtu "${ns_a}" veth_A-R1 2000
2243 mtu "${ns_r1}" veth_R1-A 2000 2243 mtu "${ns_r1}" veth_R1-A 2000
2244 mtu "${ns_r1}" veth_R1-B 1500 2244 mtu "${ns_r1}" veth_R1-B 1500
2245 mtu "${ns_b}" veth_B-R1 1500 2245 mtu "${ns_b}" veth_B-R1 1500
2246 2246
2247 mtu "${ns_a}" veth_A-R2 2000 2247 mtu "${ns_a}" veth_A-R2 2000
2248 mtu "${ns_r2}" veth_R2-A 2000 2248 mtu "${ns_r2}" veth_R2-A 2000
2249 mtu "${ns_r2}" veth_R2-B 1500 2249 mtu "${ns_r2}" veth_R2-B 1500
2250 mtu "${ns_b}" veth_B-R2 1500 2250 mtu "${ns_b}" veth_B-R2 1500
2251 2251
2252 fail=0 2252 fail=0
2253 2253
2254 # Add 100 addresses for veth endpoint 2254 # Add 100 addresses for veth endpoint on B reached by default A route
2255 for i in $(seq 100 199); do 2255 for i in $(seq 100 199); do
2256 run_cmd ${ns_b} ip addr add " 2256 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2257 done 2257 done
2258 2258
2259 # Create 100 cached route exceptions 2259 # Create 100 cached route exceptions for path via R1, one via R2
2260 for i in $(seq 100 199); do 2260 for i in $(seq 100 199); do
2261 run_cmd ${ns_a} ping -q -M wa 2261 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}"
2262 done 2262 done
2263 run_cmd ${ns_a} ping -q -M want -i 0. 2263 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}"
2264 if [ "$(${ns_a} ip -oneline -6 route 2264 if [ "$(${ns_a} ip -oneline -6 route list cache | wc -l)" -ne 101 ]; then
2265 err " can't list cached exce 2265 err " can't list cached exceptions"
2266 fail=1 2266 fail=1
2267 fi 2267 fi
2268 2268
2269 run_cmd ${ns_a} ip -6 route flush cac 2269 run_cmd ${ns_a} ip -6 route flush cache
2270 pmtu1="$(route_get_dst_pmtu_from_exce 2270 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst_prefix1}100")"
2271 pmtu2="$(route_get_dst_pmtu_from_exce 2271 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2272 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 2272 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2273 [ -n "$(${ns_a} ip -6 route list c 2273 [ -n "$(${ns_a} ip -6 route list cache)" ]; then
2274 err " can't flush cached exc 2274 err " can't flush cached exceptions"
2275 fail=1 2275 fail=1
2276 fi 2276 fi
2277 2277
2278 return ${fail} 2278 return ${fail}
2279 } 2279 }
2280 2280
2281 test_pmtu_ipvX_route_change() { 2281 test_pmtu_ipvX_route_change() {
2282 family=${1} 2282 family=${1}
2283 2283
2284 setup namespaces routing || return 2 2284 setup namespaces routing || return 2
2285 trace "${ns_a}" veth_A-R1 "${ns_r 2285 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2286 "${ns_r1}" veth_R1-B "${ns_b 2286 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2287 "${ns_a}" veth_A-R2 "${ns_r 2287 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2288 "${ns_r2}" veth_R2-B "${ns_b 2288 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2289 2289
2290 if [ ${family} -eq 4 ]; then 2290 if [ ${family} -eq 4 ]; then
2291 ping=ping 2291 ping=ping
2292 dst1="${prefix4}.${b_r1}.1" 2292 dst1="${prefix4}.${b_r1}.1"
2293 dst2="${prefix4}.${b_r2}.1" 2293 dst2="${prefix4}.${b_r2}.1"
2294 gw="${prefix4}.${a_r1}.2" 2294 gw="${prefix4}.${a_r1}.2"
2295 else 2295 else
2296 ping=${ping6} 2296 ping=${ping6}
2297 dst1="${prefix6}:${b_r1}::1" 2297 dst1="${prefix6}:${b_r1}::1"
2298 dst2="${prefix6}:${b_r2}::1" 2298 dst2="${prefix6}:${b_r2}::1"
2299 gw="${prefix6}:${a_r1}::2" 2299 gw="${prefix6}:${a_r1}::2"
2300 fi 2300 fi
2301 2301
2302 # Set up initial MTU values 2302 # Set up initial MTU values
2303 mtu "${ns_a}" veth_A-R1 2000 2303 mtu "${ns_a}" veth_A-R1 2000
2304 mtu "${ns_r1}" veth_R1-A 2000 2304 mtu "${ns_r1}" veth_R1-A 2000
2305 mtu "${ns_r1}" veth_R1-B 1400 2305 mtu "${ns_r1}" veth_R1-B 1400
2306 mtu "${ns_b}" veth_B-R1 1400 2306 mtu "${ns_b}" veth_B-R1 1400
2307 2307
2308 mtu "${ns_a}" veth_A-R2 2000 2308 mtu "${ns_a}" veth_A-R2 2000
2309 mtu "${ns_r2}" veth_R2-A 2000 2309 mtu "${ns_r2}" veth_R2-A 2000
2310 mtu "${ns_r2}" veth_R2-B 1500 2310 mtu "${ns_r2}" veth_R2-B 1500
2311 mtu "${ns_b}" veth_B-R2 1500 2311 mtu "${ns_b}" veth_B-R2 1500
2312 2312
2313 # Create route exceptions 2313 # Create route exceptions
2314 run_cmd ${ns_a} ${ping} -q -M want -i 2314 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 2315 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
2316 2316
2317 # Check that exceptions have been cre 2317 # Check that exceptions have been created with the correct PMTU
2318 pmtu_1="$(route_get_dst_pmtu_from_exc 2318 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
2319 check_pmtu_value "1400" "${pmtu_1}" " 2319 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
2320 pmtu_2="$(route_get_dst_pmtu_from_exc 2320 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2321 check_pmtu_value "1500" "${pmtu_2}" " 2321 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
2322 2322
2323 # Replace the route from A to R1 2323 # Replace the route from A to R1
2324 run_cmd ${ns_a} ip route change defau 2324 run_cmd ${ns_a} ip route change default via ${gw}
2325 2325
2326 # Delete the device in A 2326 # Delete the device in A
2327 run_cmd ${ns_a} ip link del "veth_A-R 2327 run_cmd ${ns_a} ip link del "veth_A-R1"
2328 } 2328 }
2329 2329
2330 test_pmtu_ipv4_route_change() { 2330 test_pmtu_ipv4_route_change() {
2331 test_pmtu_ipvX_route_change 4 2331 test_pmtu_ipvX_route_change 4
2332 } 2332 }
2333 2333
2334 test_pmtu_ipv6_route_change() { 2334 test_pmtu_ipv6_route_change() {
2335 test_pmtu_ipvX_route_change 6 2335 test_pmtu_ipvX_route_change 6
2336 } 2336 }
2337 2337
2338 usage() { 2338 usage() {
2339 echo 2339 echo
2340 echo "$0 [OPTIONS] [TEST]..." 2340 echo "$0 [OPTIONS] [TEST]..."
2341 echo "If no TEST argument is given, a 2341 echo "If no TEST argument is given, all tests will be run."
2342 echo 2342 echo
2343 echo "Options" 2343 echo "Options"
2344 echo " --trace: capture traffic to T 2344 echo " --trace: capture traffic to TEST_INTERFACE.pcap"
2345 echo 2345 echo
2346 echo "Available tests${tests}" 2346 echo "Available tests${tests}"
2347 exit 1 2347 exit 1
2348 } 2348 }
2349 2349
2350 ############################################# 2350 ################################################################################
2351 # 2351 #
2352 exitcode=0 2352 exitcode=0
2353 desc=0 2353 desc=0
2354 all_skipped=true 2354 all_skipped=true
2355 2355
2356 while getopts :ptv o 2356 while getopts :ptv o
2357 do 2357 do
2358 case $o in 2358 case $o in
2359 p) PAUSE_ON_FAIL=yes;; 2359 p) PAUSE_ON_FAIL=yes;;
2360 v) VERBOSE=1;; 2360 v) VERBOSE=1;;
2361 t) if which tcpdump > /dev/null 2>&1; 2361 t) if which tcpdump > /dev/null 2>&1; then
2362 TRACING=1 2362 TRACING=1
2363 else 2363 else
2364 echo "=== tcpdump not availab 2364 echo "=== tcpdump not available, tracing disabled"
2365 fi 2365 fi
2366 ;; 2366 ;;
2367 *) usage;; 2367 *) usage;;
2368 esac 2368 esac
2369 done 2369 done
2370 shift $(($OPTIND-1)) 2370 shift $(($OPTIND-1))
2371 2371
2372 IFS=" 2372 IFS="
2373 " 2373 "
2374 2374
2375 for arg do 2375 for arg do
2376 # Check first that all requested test 2376 # Check first that all requested tests are available before running any
2377 command -v > /dev/null "test_${arg}" 2377 command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
2378 done 2378 done
2379 2379
2380 trap cleanup EXIT 2380 trap cleanup EXIT
2381 2381
2382 # start clean 2382 # start clean
2383 cleanup 2383 cleanup
2384 2384
2385 HAVE_NH=no 2385 HAVE_NH=no
2386 ip nexthop ls >/dev/null 2>&1 2386 ip nexthop ls >/dev/null 2>&1
2387 [ $? -eq 0 ] && HAVE_NH=yes 2387 [ $? -eq 0 ] && HAVE_NH=yes
2388 2388
2389 name="" 2389 name=""
2390 desc="" 2390 desc=""
2391 rerun_nh=0 2391 rerun_nh=0
2392 for t in ${tests}; do 2392 for t in ${tests}; do
2393 [ "${name}" = "" ] && name="${t} 2393 [ "${name}" = "" ] && name="${t}" && continue
2394 [ "${desc}" = "" ] && desc="${t} 2394 [ "${desc}" = "" ] && desc="${t}" && continue
2395 2395
2396 if [ "${HAVE_NH}" = "yes" ]; then 2396 if [ "${HAVE_NH}" = "yes" ]; then
2397 rerun_nh="${t}" 2397 rerun_nh="${t}"
2398 fi 2398 fi
2399 2399
2400 run_this=1 2400 run_this=1
2401 for arg do 2401 for arg do
2402 [ "${arg}" != "${arg#--*}" ] 2402 [ "${arg}" != "${arg#--*}" ] && continue
2403 [ "${arg}" = "${name}" ] && r 2403 [ "${arg}" = "${name}" ] && run_this=1 && break
2404 run_this=0 2404 run_this=0
2405 done 2405 done
2406 if [ $run_this -eq 1 ]; then 2406 if [ $run_this -eq 1 ]; then
2407 run_test "${name}" "${desc}" 2407 run_test "${name}" "${desc}"
2408 # if test was skipped no need 2408 # if test was skipped no need to retry with nexthop objects
2409 [ $? -eq $ksft_skip ] && reru 2409 [ $? -eq $ksft_skip ] && rerun_nh=0
2410 2410
2411 if [ "${rerun_nh}" = "1" ]; t 2411 if [ "${rerun_nh}" = "1" ]; then
2412 run_test_nh "${name}" 2412 run_test_nh "${name}" "${desc}"
2413 fi 2413 fi
2414 fi 2414 fi
2415 name="" 2415 name=""
2416 desc="" 2416 desc=""
2417 rerun_nh=0 2417 rerun_nh=0
2418 done 2418 done
2419 2419
2420 exit ${exitcode} 2420 exit ${exitcode}
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