1 #!/bin/bash !! 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Check that route PMTU values match expectati 4 # Check that route PMTU values match expectations, and that initial device MTU
5 # values are assigned correctly 5 # values are assigned correctly
6 # 6 #
7 # Tests currently implemented: 7 # Tests currently implemented:
8 # 8 #
9 # - pmtu_ipv4 9 # - pmtu_ipv4
10 # Set up two namespaces, A and B, with t 10 # Set up two namespaces, A and B, with two paths between them over routers
11 # R1 and R2 (also implemented with names 11 # R1 and R2 (also implemented with namespaces), with different MTUs:
12 # 12 #
13 # segment a_r1 segment b_r1 13 # segment a_r1 segment b_r1 a_r1: 2000
14 # .--------------R1--------------. 14 # .--------------R1--------------. b_r1: 1400
15 # A B 15 # A B a_r2: 2000
16 # '--------------R2--------------' 16 # '--------------R2--------------' b_r2: 1500
17 # segment a_r2 segment b_r2 17 # segment a_r2 segment b_r2
18 # 18 #
19 # Check that PMTU exceptions with the co 19 # Check that PMTU exceptions with the correct PMTU are created. Then
20 # decrease and increase the MTU of the l 20 # decrease and increase the MTU of the local link for one of the paths,
21 # A to R1, checking that route exception 21 # A to R1, checking that route exception PMTU changes accordingly over
22 # this path. Also check that locked exce 22 # this path. Also check that locked exceptions are created when an ICMP
23 # message advertising a PMTU smaller tha 23 # message advertising a PMTU smaller than net.ipv4.route.min_pmtu is
24 # received 24 # received
25 # 25 #
26 # - pmtu_ipv6 26 # - pmtu_ipv6
27 # Same as pmtu_ipv4, except for locked P 27 # Same as pmtu_ipv4, except for locked PMTU tests, using IPv6
28 # 28 #
29 # - pmtu_ipv4_dscp_icmp_exception 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 # Kselftest framework requirement - SKIP code is 4.
202 source net_helper.sh !! 202 ksft_skip=4
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 NS_A="ns-A"
>> 272 NS_B="ns-B"
>> 273 NS_C="ns-C"
>> 274 NS_R1="ns-R1"
>> 275 NS_R2="ns-R2"
>> 276 ns_a="ip netns exec ${NS_A}"
>> 277 ns_b="ip netns exec ${NS_B}"
>> 278 ns_c="ip netns exec ${NS_C}"
>> 279 ns_r1="ip netns exec ${NS_R1}"
>> 280 ns_r2="ip netns exec ${NS_R2}"
271 # Addressing and routing for tests with router 281 # Addressing and routing for tests with routers: four network segments, with
272 # index SEGMENT between 1 and 4, a common pref 282 # 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 283 # identifier ID, which is 1 for hosts (A and B), 2 for routers (R1 and R2).
274 # Addresses are: 284 # Addresses are:
275 # - IPv4: PREFIX4.SEGMENT.ID (/24) 285 # - IPv4: PREFIX4.SEGMENT.ID (/24)
276 # - IPv6: PREFIX6:SEGMENT::ID (/64) 286 # - IPv6: PREFIX6:SEGMENT::ID (/64)
277 prefix4="10.0" 287 prefix4="10.0"
278 prefix6="fc00" 288 prefix6="fc00"
279 a_r1=1 289 a_r1=1
280 a_r2=2 290 a_r2=2
281 b_r1=3 291 b_r1=3
282 b_r2=4 292 b_r2=4
283 # ns peer segment 293 # ns peer segment
284 routing_addrs=" 294 routing_addrs="
285 A R1 ${a_r1} 295 A R1 ${a_r1}
286 A R2 ${a_r2} 296 A R2 ${a_r2}
287 B R1 ${b_r1} 297 B R1 ${b_r1}
288 B R2 ${b_r2} 298 B R2 ${b_r2}
289 " 299 "
290 # Traffic from A to B goes through R1 by defau 300 # 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. 301 # B's address on the b_r2 segment.
292 # Traffic from B to A goes through R1. 302 # Traffic from B to A goes through R1.
293 # ns destination gatewa 303 # ns destination gateway
294 routes=" 304 routes="
295 A default ${pref 305 A default ${prefix4}.${a_r1}.2
296 A ${prefix4}.${b_r2}.1 ${pref 306 A ${prefix4}.${b_r2}.1 ${prefix4}.${a_r2}.2
297 B default ${pref 307 B default ${prefix4}.${b_r1}.2
298 308
299 A default ${pref 309 A default ${prefix6}:${a_r1}::2
300 A ${prefix6}:${b_r2}::1 ${pref 310 A ${prefix6}:${b_r2}::1 ${prefix6}:${a_r2}::2
301 B default ${pref 311 B default ${prefix6}:${b_r1}::2
302 " 312 "
303 USE_NH="no" 313 USE_NH="no"
304 # ns family nh id destination 314 # ns family nh id destination gateway
305 nexthops=" 315 nexthops="
306 A 4 41 ${prefix4}.${a 316 A 4 41 ${prefix4}.${a_r1}.2 veth_A-R1
307 A 4 42 ${prefix4}.${a 317 A 4 42 ${prefix4}.${a_r2}.2 veth_A-R2
308 B 4 41 ${prefix4}.${b 318 B 4 41 ${prefix4}.${b_r1}.2 veth_B-R1
309 319
310 A 6 61 ${prefix6}:${a 320 A 6 61 ${prefix6}:${a_r1}::2 veth_A-R1
311 A 6 62 ${prefix6}:${a 321 A 6 62 ${prefix6}:${a_r2}::2 veth_A-R2
312 B 6 61 ${prefix6}:${b 322 B 6 61 ${prefix6}:${b_r1}::2 veth_B-R1
313 " 323 "
314 324
315 # nexthop id correlates to id in nexthops conf 325 # nexthop id correlates to id in nexthops config above
316 # ns family prefix 326 # ns family prefix nh id
317 routes_nh=" 327 routes_nh="
318 A 4 default 328 A 4 default 41
319 A 4 ${prefix4}.${b_r2}.1 329 A 4 ${prefix4}.${b_r2}.1 42
320 B 4 default 330 B 4 default 41
321 331
322 A 6 default 332 A 6 default 61
323 A 6 ${prefix6}:${b_r2}::1 333 A 6 ${prefix6}:${b_r2}::1 62
324 B 6 default 334 B 6 default 61
325 " 335 "
326 336
327 policy_mark=0x04 337 policy_mark=0x04
328 rt_table=main 338 rt_table=main
329 339
330 veth4_a_addr="192.168.1.1" 340 veth4_a_addr="192.168.1.1"
331 veth4_b_addr="192.168.1.2" 341 veth4_b_addr="192.168.1.2"
332 veth4_c_addr="192.168.2.10" 342 veth4_c_addr="192.168.2.10"
333 veth4_mask="24" 343 veth4_mask="24"
334 veth6_a_addr="fd00:1::a" 344 veth6_a_addr="fd00:1::a"
335 veth6_b_addr="fd00:1::b" 345 veth6_b_addr="fd00:1::b"
336 veth6_c_addr="fd00:2::c" 346 veth6_c_addr="fd00:2::c"
337 veth6_mask="64" 347 veth6_mask="64"
338 348
339 tunnel4_a_addr="192.168.2.1" 349 tunnel4_a_addr="192.168.2.1"
340 tunnel4_b_addr="192.168.2.2" 350 tunnel4_b_addr="192.168.2.2"
341 tunnel4_mask="24" 351 tunnel4_mask="24"
342 tunnel6_a_addr="fd00:2::a" 352 tunnel6_a_addr="fd00:2::a"
343 tunnel6_b_addr="fd00:2::b" 353 tunnel6_b_addr="fd00:2::b"
344 tunnel6_mask="64" 354 tunnel6_mask="64"
345 355
346 dummy6_0_prefix="fc00:1000::" 356 dummy6_0_prefix="fc00:1000::"
347 dummy6_1_prefix="fc00:1001::" 357 dummy6_1_prefix="fc00:1001::"
348 dummy6_mask="64" 358 dummy6_mask="64"
349 359
350 err_buf= 360 err_buf=
351 tcpdump_pids= 361 tcpdump_pids=
352 nettest_pids= 362 nettest_pids=
353 socat_pids= 363 socat_pids=
354 tmpoutfile= <<
355 364
356 err() { 365 err() {
357 err_buf="${err_buf}${1} 366 err_buf="${err_buf}${1}
358 " 367 "
359 } 368 }
360 369
361 err_flush() { 370 err_flush() {
362 echo -n "${err_buf}" 371 echo -n "${err_buf}"
363 err_buf= 372 err_buf=
364 } 373 }
365 374
366 run_cmd() { 375 run_cmd() {
367 cmd="$*" 376 cmd="$*"
368 377
369 if [ "$VERBOSE" = "1" ]; then 378 if [ "$VERBOSE" = "1" ]; then
370 printf " COMMAND: $cmd\n" 379 printf " COMMAND: $cmd\n"
371 fi 380 fi
372 381
373 out="$($cmd 2>&1)" 382 out="$($cmd 2>&1)"
374 rc=$? 383 rc=$?
375 if [ "$VERBOSE" = "1" -a -n "$out" ]; 384 if [ "$VERBOSE" = "1" -a -n "$out" ]; then
376 echo " $out" 385 echo " $out"
377 echo 386 echo
378 fi 387 fi
379 388
380 return $rc 389 return $rc
381 } 390 }
382 391
383 run_cmd_bg() { 392 run_cmd_bg() {
384 cmd="$*" 393 cmd="$*"
385 394
386 if [ "$VERBOSE" = "1" ]; then 395 if [ "$VERBOSE" = "1" ]; then
387 printf " COMMAND: %s &\n" " 396 printf " COMMAND: %s &\n" "${cmd}"
388 fi 397 fi
389 398
390 $cmd 2>&1 & 399 $cmd 2>&1 &
391 } 400 }
392 401
393 # Find the auto-generated name for this namesp 402 # Find the auto-generated name for this namespace
394 nsname() { 403 nsname() {
395 eval echo \$NS_$1 404 eval echo \$NS_$1
396 } 405 }
397 406
398 setup_fou_or_gue() { 407 setup_fou_or_gue() {
399 outer="${1}" 408 outer="${1}"
400 inner="${2}" 409 inner="${2}"
401 encap="${3}" 410 encap="${3}"
402 411
403 if [ "${outer}" = "4" ]; then 412 if [ "${outer}" = "4" ]; then
404 modprobe fou || return $ksft_s 413 modprobe fou || return $ksft_skip
405 a_addr="${prefix4}.${a_r1}.1" 414 a_addr="${prefix4}.${a_r1}.1"
406 b_addr="${prefix4}.${b_r1}.1" 415 b_addr="${prefix4}.${b_r1}.1"
407 if [ "${inner}" = "4" ]; then 416 if [ "${inner}" = "4" ]; then
408 type="ipip" 417 type="ipip"
409 ipproto="4" 418 ipproto="4"
410 else 419 else
411 type="sit" 420 type="sit"
412 ipproto="41" 421 ipproto="41"
413 fi 422 fi
414 else 423 else
415 modprobe fou6 || return $ksft_ 424 modprobe fou6 || return $ksft_skip
416 a_addr="${prefix6}:${a_r1}::1" 425 a_addr="${prefix6}:${a_r1}::1"
417 b_addr="${prefix6}:${b_r1}::1" 426 b_addr="${prefix6}:${b_r1}::1"
418 if [ "${inner}" = "4" ]; then 427 if [ "${inner}" = "4" ]; then
419 type="ip6tnl" 428 type="ip6tnl"
420 mode="mode ipip6" 429 mode="mode ipip6"
421 ipproto="4 -6" 430 ipproto="4 -6"
422 else 431 else
423 type="ip6tnl" 432 type="ip6tnl"
424 mode="mode ip6ip6" 433 mode="mode ip6ip6"
425 ipproto="41 -6" 434 ipproto="41 -6"
426 fi 435 fi
427 fi 436 fi
428 437
429 run_cmd ${ns_a} ip fou add port 5555 i 438 run_cmd ${ns_a} ip fou add port 5555 ipproto ${ipproto} || return $ksft_skip
430 run_cmd ${ns_a} ip link add ${encap}_a 439 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
431 440
432 run_cmd ${ns_b} ip fou add port 5556 i 441 run_cmd ${ns_b} ip fou add port 5556 ipproto ${ipproto}
433 run_cmd ${ns_b} ip link add ${encap}_b 442 run_cmd ${ns_b} ip link add ${encap}_b type ${type} ${mode} local ${b_addr} remote ${a_addr} encap ${encap} encap-sport auto encap-dport 5555
434 443
435 if [ "${inner}" = "4" ]; then 444 if [ "${inner}" = "4" ]; then
436 run_cmd ${ns_a} ip addr add ${ 445 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${encap}_a
437 run_cmd ${ns_b} ip addr add ${ 446 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${encap}_b
438 else 447 else
439 run_cmd ${ns_a} ip addr add ${ 448 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${encap}_a
440 run_cmd ${ns_b} ip addr add ${ 449 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${encap}_b
441 fi 450 fi
442 451
443 run_cmd ${ns_a} ip link set ${encap}_a 452 run_cmd ${ns_a} ip link set ${encap}_a up
444 run_cmd ${ns_b} ip link set ${encap}_b 453 run_cmd ${ns_b} ip link set ${encap}_b up
445 } 454 }
446 455
447 setup_fou44() { 456 setup_fou44() {
448 setup_fou_or_gue 4 4 fou 457 setup_fou_or_gue 4 4 fou
449 } 458 }
450 459
451 setup_fou46() { 460 setup_fou46() {
452 setup_fou_or_gue 4 6 fou 461 setup_fou_or_gue 4 6 fou
453 } 462 }
454 463
455 setup_fou64() { 464 setup_fou64() {
456 setup_fou_or_gue 6 4 fou 465 setup_fou_or_gue 6 4 fou
457 } 466 }
458 467
459 setup_fou66() { 468 setup_fou66() {
460 setup_fou_or_gue 6 6 fou 469 setup_fou_or_gue 6 6 fou
461 } 470 }
462 471
463 setup_gue44() { 472 setup_gue44() {
464 setup_fou_or_gue 4 4 gue 473 setup_fou_or_gue 4 4 gue
465 } 474 }
466 475
467 setup_gue46() { 476 setup_gue46() {
468 setup_fou_or_gue 4 6 gue 477 setup_fou_or_gue 4 6 gue
469 } 478 }
470 479
471 setup_gue64() { 480 setup_gue64() {
472 setup_fou_or_gue 6 4 gue 481 setup_fou_or_gue 6 4 gue
473 } 482 }
474 483
475 setup_gue66() { 484 setup_gue66() {
476 setup_fou_or_gue 6 6 gue 485 setup_fou_or_gue 6 6 gue
477 } 486 }
478 487
479 setup_ipvX_over_ipvY() { 488 setup_ipvX_over_ipvY() {
480 inner=${1} 489 inner=${1}
481 outer=${2} 490 outer=${2}
482 491
483 if [ "${outer}" -eq 4 ]; then 492 if [ "${outer}" -eq 4 ]; then
484 a_addr="${prefix4}.${a_r1}.1" 493 a_addr="${prefix4}.${a_r1}.1"
485 b_addr="${prefix4}.${b_r1}.1" 494 b_addr="${prefix4}.${b_r1}.1"
486 if [ "${inner}" -eq 4 ]; then 495 if [ "${inner}" -eq 4 ]; then
487 type="ipip" 496 type="ipip"
488 mode="ipip" 497 mode="ipip"
489 else 498 else
490 type="sit" 499 type="sit"
491 mode="ip6ip" 500 mode="ip6ip"
492 fi 501 fi
493 else 502 else
494 a_addr="${prefix6}:${a_r1}::1" 503 a_addr="${prefix6}:${a_r1}::1"
495 b_addr="${prefix6}:${b_r1}::1" 504 b_addr="${prefix6}:${b_r1}::1"
496 type="ip6tnl" 505 type="ip6tnl"
497 if [ "${inner}" -eq 4 ]; then 506 if [ "${inner}" -eq 4 ]; then
498 mode="ipip6" 507 mode="ipip6"
499 else 508 else
500 mode="ip6ip6" 509 mode="ip6ip6"
501 fi 510 fi
502 fi 511 fi
503 512
504 run_cmd ${ns_a} ip link add ip_a type 513 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 514 run_cmd ${ns_b} ip link add ip_b type ${type} local ${b_addr} remote ${a_addr} mode ${mode}
506 515
507 run_cmd ${ns_a} ip link set ip_a up 516 run_cmd ${ns_a} ip link set ip_a up
508 run_cmd ${ns_b} ip link set ip_b up 517 run_cmd ${ns_b} ip link set ip_b up
509 518
510 if [ "${inner}" = "4" ]; then 519 if [ "${inner}" = "4" ]; then
511 run_cmd ${ns_a} ip addr add ${ 520 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ip_a
512 run_cmd ${ns_b} ip addr add ${ 521 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ip_b
513 else 522 else
514 run_cmd ${ns_a} ip addr add ${ 523 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ip_a
515 run_cmd ${ns_b} ip addr add ${ 524 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ip_b
516 fi 525 fi
517 } 526 }
518 527
519 setup_ip4ip4() { 528 setup_ip4ip4() {
520 setup_ipvX_over_ipvY 4 4 529 setup_ipvX_over_ipvY 4 4
521 } 530 }
522 531
523 setup_ip6ip4() { 532 setup_ip6ip4() {
524 setup_ipvX_over_ipvY 6 4 533 setup_ipvX_over_ipvY 6 4
525 } 534 }
526 535
527 setup_ip4ip6() { 536 setup_ip4ip6() {
528 setup_ipvX_over_ipvY 4 6 537 setup_ipvX_over_ipvY 4 6
529 } 538 }
530 539
531 setup_ip6ip6() { 540 setup_ip6ip6() {
532 setup_ipvX_over_ipvY 6 6 541 setup_ipvX_over_ipvY 6 6
533 } 542 }
534 543
535 setup_namespaces() { 544 setup_namespaces() {
536 setup_ns NS_A NS_B NS_C NS_R1 NS_R2 <<
537 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_ 545 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
>> 546 ip netns add ${n} || return 1
>> 547
538 # Disable DAD, so that we don' 548 # Disable DAD, so that we don't have to wait to use the
539 # configured IPv6 addresses 549 # configured IPv6 addresses
540 ip netns exec ${n} sysctl -q n 550 ip netns exec ${n} sysctl -q net/ipv6/conf/default/accept_dad=0
541 done 551 done
542 ns_a="ip netns exec ${NS_A}" <<
543 ns_b="ip netns exec ${NS_B}" <<
544 ns_c="ip netns exec ${NS_C}" <<
545 ns_r1="ip netns exec ${NS_R1}" <<
546 ns_r2="ip netns exec ${NS_R2}" <<
547 } 552 }
548 553
549 setup_veth() { 554 setup_veth() {
550 run_cmd ${ns_a} ip link add veth_a typ 555 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 556 run_cmd ${ns_a} ip link set veth_b netns ${NS_B}
552 557
553 run_cmd ${ns_a} ip addr add ${veth4_a_ 558 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_ 559 run_cmd ${ns_b} ip addr add ${veth4_b_addr}/${veth4_mask} dev veth_b
555 560
556 run_cmd ${ns_a} ip addr add ${veth6_a_ 561 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_ 562 run_cmd ${ns_b} ip addr add ${veth6_b_addr}/${veth6_mask} dev veth_b
558 563
559 run_cmd ${ns_a} ip link set veth_a up 564 run_cmd ${ns_a} ip link set veth_a up
560 run_cmd ${ns_b} ip link set veth_b up 565 run_cmd ${ns_b} ip link set veth_b up
561 } 566 }
562 567
563 setup_vti() { 568 setup_vti() {
564 proto=${1} 569 proto=${1}
565 veth_a_addr="${2}" 570 veth_a_addr="${2}"
566 veth_b_addr="${3}" 571 veth_b_addr="${3}"
567 vti_a_addr="${4}" 572 vti_a_addr="${4}"
568 vti_b_addr="${5}" 573 vti_b_addr="${5}"
569 vti_mask=${6} 574 vti_mask=${6}
570 575
571 [ ${proto} -eq 6 ] && vti_type="vti6" 576 [ ${proto} -eq 6 ] && vti_type="vti6" || vti_type="vti"
572 577
573 run_cmd ${ns_a} ip link add vti${proto 578 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 579 run_cmd ${ns_b} ip link add vti${proto}_b type ${vti_type} local ${veth_b_addr} remote ${veth_a_addr} key 10
575 580
576 run_cmd ${ns_a} ip addr add ${vti_a_ad 581 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 582 run_cmd ${ns_b} ip addr add ${vti_b_addr}/${vti_mask} dev vti${proto}_b
578 583
579 run_cmd ${ns_a} ip link set vti${proto 584 run_cmd ${ns_a} ip link set vti${proto}_a up
580 run_cmd ${ns_b} ip link set vti${proto 585 run_cmd ${ns_b} ip link set vti${proto}_b up
581 } 586 }
582 587
583 setup_vti4() { 588 setup_vti4() {
584 setup_vti 4 ${veth4_a_addr} ${veth4_b_ 589 setup_vti 4 ${veth4_a_addr} ${veth4_b_addr} ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
585 } 590 }
586 591
587 setup_vti6() { 592 setup_vti6() {
588 setup_vti 6 ${veth6_a_addr} ${veth6_b_ 593 setup_vti 6 ${veth6_a_addr} ${veth6_b_addr} ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
589 } 594 }
590 595
591 setup_vti4routed() { 596 setup_vti4routed() {
592 setup_vti 4 ${prefix4}.${a_r1}.1 ${pre 597 setup_vti 4 ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 ${tunnel4_a_addr} ${tunnel4_b_addr} ${tunnel4_mask}
593 } 598 }
594 599
595 setup_vti6routed() { 600 setup_vti6routed() {
596 setup_vti 6 ${prefix6}:${a_r1}::1 ${pr 601 setup_vti 6 ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ${tunnel6_a_addr} ${tunnel6_b_addr} ${tunnel6_mask}
597 } 602 }
598 603
599 setup_vxlan_or_geneve() { 604 setup_vxlan_or_geneve() {
600 type="${1}" 605 type="${1}"
601 a_addr="${2}" 606 a_addr="${2}"
602 b_addr="${3}" 607 b_addr="${3}"
603 opts="${4}" 608 opts="${4}"
604 br_if_a="${5}" 609 br_if_a="${5}"
605 610
606 if [ "${type}" = "vxlan" ]; then 611 if [ "${type}" = "vxlan" ]; then
607 opts="${opts} ttl 64 dstport 4 612 opts="${opts} ttl 64 dstport 4789"
608 opts_a="local ${a_addr}" 613 opts_a="local ${a_addr}"
609 opts_b="local ${b_addr}" 614 opts_b="local ${b_addr}"
610 else 615 else
611 opts_a="" 616 opts_a=""
612 opts_b="" 617 opts_b=""
613 fi 618 fi
614 619
615 run_cmd ${ns_a} ip link add ${type}_a 620 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 621 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts}
617 622
618 if [ -n "${br_if_a}" ]; then 623 if [ -n "${br_if_a}" ]; then
619 run_cmd ${ns_a} ip addr add ${ 624 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${br_if_a}
620 run_cmd ${ns_a} ip addr add ${ 625 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${br_if_a}
621 run_cmd ${ns_a} ip link set ${ 626 run_cmd ${ns_a} ip link set ${type}_a master ${br_if_a}
622 else 627 else
623 run_cmd ${ns_a} ip addr add ${ 628 run_cmd ${ns_a} ip addr add ${tunnel4_a_addr}/${tunnel4_mask} dev ${type}_a
624 run_cmd ${ns_a} ip addr add ${ 629 run_cmd ${ns_a} ip addr add ${tunnel6_a_addr}/${tunnel6_mask} dev ${type}_a
625 fi 630 fi
626 631
627 run_cmd ${ns_b} ip addr add ${tunnel4_ 632 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
628 run_cmd ${ns_b} ip addr add ${tunnel6_ 633 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
629 634
630 run_cmd ${ns_a} ip link set ${type}_a 635 run_cmd ${ns_a} ip link set ${type}_a up
631 run_cmd ${ns_b} ip link set ${type}_b 636 run_cmd ${ns_b} ip link set ${type}_b up
632 } 637 }
633 638
634 setup_geneve4() { 639 setup_geneve4() {
635 setup_vxlan_or_geneve geneve ${prefix4 640 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
636 } 641 }
637 642
638 setup_vxlan4() { 643 setup_vxlan4() {
639 setup_vxlan_or_geneve vxlan ${prefix4 644 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set"
640 } 645 }
641 646
642 setup_geneve6() { 647 setup_geneve6() {
643 setup_vxlan_or_geneve geneve ${prefix6 648 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
644 } 649 }
645 650
646 setup_vxlan6() { 651 setup_vxlan6() {
647 setup_vxlan_or_geneve vxlan ${prefix6 652 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 ""
648 } 653 }
649 654
650 setup_bridged_geneve4() { 655 setup_bridged_geneve4() {
651 setup_vxlan_or_geneve geneve ${prefix4 656 setup_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
652 } 657 }
653 658
654 setup_bridged_vxlan4() { 659 setup_bridged_vxlan4() {
655 setup_vxlan_or_geneve vxlan ${prefix4 660 setup_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1 "df set" "br0"
656 } 661 }
657 662
658 setup_bridged_geneve6() { 663 setup_bridged_geneve6() {
659 setup_vxlan_or_geneve geneve ${prefix6 664 setup_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
660 } 665 }
661 666
662 setup_bridged_vxlan6() { 667 setup_bridged_vxlan6() {
663 setup_vxlan_or_geneve vxlan ${prefix6 668 setup_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1 "" "br0"
664 } 669 }
665 670
666 setup_xfrm() { 671 setup_xfrm() {
667 proto=${1} 672 proto=${1}
668 veth_a_addr="${2}" 673 veth_a_addr="${2}"
669 veth_b_addr="${3}" 674 veth_b_addr="${3}"
670 encap=${4} 675 encap=${4}
671 676
672 run_cmd ${ns_a} ip -${proto} xfrm stat 677 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 678 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 679 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 680 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
676 681
677 run_cmd ${ns_b} ip -${proto} xfrm stat 682 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 683 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 684 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 685 run_cmd ${ns_b} ip -${proto} xfrm policy add dir in mark 10 tmpl src ${veth_a_addr} dst ${veth_b_addr} proto esp mode tunnel
681 } 686 }
682 687
683 setup_nettest_xfrm() { 688 setup_nettest_xfrm() {
684 if ! which nettest >/dev/null; then !! 689 which nettest >/dev/null
685 PATH=$PWD:$PATH !! 690 if [ $? -ne 0 ]; then
686 if ! which nettest >/dev/null; !! 691 echo "'nettest' command not found; skipping tests"
687 echo "'nettest' comman !! 692 return 1
688 return 1 <<
689 fi <<
690 fi 693 fi
691 694
692 [ ${1} -eq 6 ] && proto="-6" || proto= 695 [ ${1} -eq 6 ] && proto="-6" || proto=""
693 port=${2} 696 port=${2}
694 697
695 run_cmd_bg "${ns_a}" nettest "${proto} 698 run_cmd_bg "${ns_a}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
696 nettest_pids="${nettest_pids} $!" 699 nettest_pids="${nettest_pids} $!"
697 700
698 run_cmd_bg "${ns_b}" nettest "${proto} 701 run_cmd_bg "${ns_b}" nettest "${proto}" -q -D -s -x -p "${port}" -t 5
699 nettest_pids="${nettest_pids} $!" 702 nettest_pids="${nettest_pids} $!"
700 } 703 }
701 704
702 setup_xfrm4() { 705 setup_xfrm4() {
703 setup_xfrm 4 ${veth4_a_addr} ${veth4_b 706 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr}
704 } 707 }
705 708
706 setup_xfrm6() { 709 setup_xfrm6() {
707 setup_xfrm 6 ${veth6_a_addr} ${veth6_b 710 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr}
708 } 711 }
709 712
710 setup_xfrm4udp() { 713 setup_xfrm4udp() {
711 setup_xfrm 4 ${veth4_a_addr} ${veth4_b !! 714 setup_xfrm 4 ${veth4_a_addr} ${veth4_b_addr} "encap espinudp 4500 4500 0.0.0.0"
712 setup_nettest_xfrm 4 4500 !! 715 setup_nettest_xfrm 4 4500
713 } 716 }
714 717
715 setup_xfrm6udp() { 718 setup_xfrm6udp() {
716 setup_xfrm 6 ${veth6_a_addr} ${veth6_b !! 719 setup_xfrm 6 ${veth6_a_addr} ${veth6_b_addr} "encap espinudp 4500 4500 0.0.0.0"
717 setup_nettest_xfrm 6 4500 !! 720 setup_nettest_xfrm 6 4500
718 } 721 }
719 722
720 setup_xfrm4udprouted() { 723 setup_xfrm4udprouted() {
721 setup_xfrm 4 ${prefix4}.${a_r1}.1 ${pr !! 724 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 !! 725 setup_nettest_xfrm 4 4500
723 } 726 }
724 727
725 setup_xfrm6udprouted() { 728 setup_xfrm6udprouted() {
726 setup_xfrm 6 ${prefix6}:${a_r1}::1 ${p !! 729 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 !! 730 setup_nettest_xfrm 6 4500
728 } 731 }
729 732
730 setup_routing_old() { 733 setup_routing_old() {
731 for i in ${routes}; do 734 for i in ${routes}; do
732 [ "${ns}" = "" ] && ns= 735 [ "${ns}" = "" ] && ns="${i}" && continue
733 [ "${addr}" = "" ] && add 736 [ "${addr}" = "" ] && addr="${i}" && continue
734 [ "${gw}" = "" ] && gw= 737 [ "${gw}" = "" ] && gw="${i}"
735 738
736 ns_name="$(nsname ${ns})" 739 ns_name="$(nsname ${ns})"
737 740
738 ip -n "${ns_name}" route add " 741 ip -n "${ns_name}" route add "${addr}" table "${rt_table}" via "${gw}"
739 742
740 ns=""; addr=""; gw="" 743 ns=""; addr=""; gw=""
741 done 744 done
742 } 745 }
743 746
744 setup_routing_new() { 747 setup_routing_new() {
745 for i in ${nexthops}; do 748 for i in ${nexthops}; do
746 [ "${ns}" = "" ] && ns= 749 [ "${ns}" = "" ] && ns="${i}" && continue
747 [ "${fam}" = "" ] && fam 750 [ "${fam}" = "" ] && fam="${i}" && continue
748 [ "${nhid}" = "" ] && nhi 751 [ "${nhid}" = "" ] && nhid="${i}" && continue
749 [ "${gw}" = "" ] && gw= 752 [ "${gw}" = "" ] && gw="${i}" && continue
750 [ "${dev}" = "" ] && dev 753 [ "${dev}" = "" ] && dev="${i}"
751 754
752 ns_name="$(nsname ${ns})" 755 ns_name="$(nsname ${ns})"
753 756
754 ip -n ${ns_name} -${fam} nexth 757 ip -n ${ns_name} -${fam} nexthop add id ${nhid} via ${gw} dev ${dev}
755 758
756 ns=""; fam=""; nhid=""; gw=""; 759 ns=""; fam=""; nhid=""; gw=""; dev=""
757 760
758 done 761 done
759 762
760 for i in ${routes_nh}; do 763 for i in ${routes_nh}; do
761 [ "${ns}" = "" ] && ns= 764 [ "${ns}" = "" ] && ns="${i}" && continue
762 [ "${fam}" = "" ] && fam 765 [ "${fam}" = "" ] && fam="${i}" && continue
763 [ "${addr}" = "" ] && add 766 [ "${addr}" = "" ] && addr="${i}" && continue
764 [ "${nhid}" = "" ] && nhi 767 [ "${nhid}" = "" ] && nhid="${i}"
765 768
766 ns_name="$(nsname ${ns})" 769 ns_name="$(nsname ${ns})"
767 770
768 ip -n "${ns_name}" -"${fam}" r 771 ip -n "${ns_name}" -"${fam}" route add "${addr}" table "${rt_table}" nhid "${nhid}"
769 772
770 ns=""; fam=""; addr=""; nhid=" 773 ns=""; fam=""; addr=""; nhid=""
771 done 774 done
772 } 775 }
773 776
774 setup_routing() { 777 setup_routing() {
775 for i in ${NS_R1} ${NS_R2}; do 778 for i in ${NS_R1} ${NS_R2}; do
776 ip netns exec ${i} sysctl -q n 779 ip netns exec ${i} sysctl -q net/ipv4/ip_forward=1
777 ip netns exec ${i} sysctl -q n 780 ip netns exec ${i} sysctl -q net/ipv6/conf/all/forwarding=1
778 done 781 done
779 782
780 for i in ${routing_addrs}; do 783 for i in ${routing_addrs}; do
781 [ "${ns}" = "" ] && ns= 784 [ "${ns}" = "" ] && ns="${i}" && continue
782 [ "${peer}" = "" ] && pee 785 [ "${peer}" = "" ] && peer="${i}" && continue
783 [ "${segment}" = "" ] && seg 786 [ "${segment}" = "" ] && segment="${i}"
784 787
785 ns_name="$(nsname ${ns})" 788 ns_name="$(nsname ${ns})"
786 peer_name="$(nsname ${peer})" 789 peer_name="$(nsname ${peer})"
787 if="veth_${ns}-${peer}" 790 if="veth_${ns}-${peer}"
788 ifpeer="veth_${peer}-${ns}" 791 ifpeer="veth_${peer}-${ns}"
789 792
790 # Create veth links 793 # Create veth links
791 ip link add ${if} up netns ${n 794 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 795 ip -n ${peer_name} link set dev ${ifpeer} up
793 796
794 # Add addresses 797 # Add addresses
795 ip -n ${ns_name} addr add ${ 798 ip -n ${ns_name} addr add ${prefix4}.${segment}.1/24 dev ${if}
796 ip -n ${ns_name} addr add ${ 799 ip -n ${ns_name} addr add ${prefix6}:${segment}::1/64 dev ${if}
797 800
798 ip -n ${peer_name} addr add ${ 801 ip -n ${peer_name} addr add ${prefix4}.${segment}.2/24 dev ${ifpeer}
799 ip -n ${peer_name} addr add ${ 802 ip -n ${peer_name} addr add ${prefix6}:${segment}::2/64 dev ${ifpeer}
800 803
801 ns=""; peer=""; segment="" 804 ns=""; peer=""; segment=""
802 done 805 done
803 806
804 if [ "$USE_NH" = "yes" ]; then 807 if [ "$USE_NH" = "yes" ]; then
805 setup_routing_new 808 setup_routing_new
806 else 809 else
807 setup_routing_old 810 setup_routing_old
808 fi 811 fi
809 812
810 return 0 813 return 0
811 } 814 }
812 815
813 setup_policy_routing() { 816 setup_policy_routing() {
814 setup_routing 817 setup_routing
815 818
816 ip -netns "${NS_A}" -4 rule add dsfiel 819 ip -netns "${NS_A}" -4 rule add dsfield "${policy_mark}" \
817 table "${rt_table}" 820 table "${rt_table}"
818 821
819 # Set the IPv4 Don't Fragment bit with 822 # Set the IPv4 Don't Fragment bit with tc, since socat doesn't seem to
820 # have an option do to it. 823 # have an option do to it.
821 tc -netns "${NS_A}" qdisc replace dev 824 tc -netns "${NS_A}" qdisc replace dev veth_A-R1 root prio
822 tc -netns "${NS_A}" qdisc replace dev 825 tc -netns "${NS_A}" qdisc replace dev veth_A-R2 root prio
823 tc -netns "${NS_A}" filter add dev vet 826 tc -netns "${NS_A}" filter add dev veth_A-R1 \
824 protocol ipv4 flower ip_proto 827 protocol ipv4 flower ip_proto udp \
825 action pedit ex munge ip df se 828 action pedit ex munge ip df set 0x40 pipe csum ip and udp
826 tc -netns "${NS_A}" filter add dev vet 829 tc -netns "${NS_A}" filter add dev veth_A-R2 \
827 protocol ipv4 flower ip_proto 830 protocol ipv4 flower ip_proto udp \
828 action pedit ex munge ip df se 831 action pedit ex munge ip df set 0x40 pipe csum ip and udp
829 } 832 }
830 833
831 setup_bridge() { 834 setup_bridge() {
832 run_cmd ${ns_a} ip link add br0 type b 835 run_cmd ${ns_a} ip link add br0 type bridge || return $ksft_skip
833 run_cmd ${ns_a} ip link set br0 up 836 run_cmd ${ns_a} ip link set br0 up
834 837
835 run_cmd ${ns_c} ip link add veth_C-A t 838 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 !! 839 run_cmd ${ns_c} ip link set veth_A-C netns ns-A
837 840
838 run_cmd ${ns_a} ip link set veth_A-C u 841 run_cmd ${ns_a} ip link set veth_A-C up
839 run_cmd ${ns_c} ip link set veth_C-A u 842 run_cmd ${ns_c} ip link set veth_C-A up
840 run_cmd ${ns_c} ip addr add ${veth4_c_ 843 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_ 844 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 845 run_cmd ${ns_a} ip link set veth_A-C master br0
843 } 846 }
844 847
845 setup_ovs_via_internal_utility() { <<
846 type="${1}" <<
847 a_addr="${2}" <<
848 b_addr="${3}" <<
849 dport="${4}" <<
850 <<
851 run_cmd python3 ./openvswitch/ovs-dpct <<
852 <<
853 ports=$(python3 ./openvswitch/ovs-dpct <<
854 br0_port=$(echo "$ports" | grep -E "\s <<
855 type_a_port=$(echo "$ports" | grep ${t <<
856 veth_a_port=$(echo "$ports" | grep vet <<
857 <<
858 v4_a_tun="${prefix4}.${a_r1}.1" <<
859 v4_b_tun="${prefix4}.${b_r1}.1" <<
860 <<
861 v6_a_tun="${prefix6}:${a_r1}::1" <<
862 v6_b_tun="${prefix6}:${b_r1}::1" <<
863 <<
864 if [ "${v4_a_tun}" = "${a_addr}" ]; th <<
865 run_cmd python3 ./openvswitch/ <<
866 "recirc_id(0),in_port(${ve <<
867 "set(tunnel(tun_id=1,dst=$ <<
868 run_cmd python3 ./openvswitch/ <<
869 "recirc_id(0),in_port(${ve <<
870 "set(tunnel(tun_id=1,dst=$ <<
871 run_cmd python3 ./openvswitch/ <<
872 "recirc_id(0),tunnel(tun_i <<
873 "${veth_a_port}" <<
874 run_cmd python3 ./openvswitch/ <<
875 "recirc_id(0),tunnel(tun_i <<
876 "${veth_a_port}" <<
877 run_cmd python3 ./openvswitch/ <<
878 "recirc_id(0),tunnel(tun_i <<
879 "${veth_a_port}" <<
880 run_cmd python3 ./openvswitch/ <<
881 "recirc_id(0),in_port(${ve <<
882 "set(tunnel(tun_id=1,dst=$ <<
883 else <<
884 run_cmd python3 ./openvswitch/ <<
885 "recirc_id(0),in_port(${ve <<
886 "set(tunnel(tun_id=1,ipv6_ <<
887 run_cmd python3 ./openvswitch/ <<
888 "recirc_id(0),in_port(${ve <<
889 "set(tunnel(tun_id=1,ipv6_ <<
890 run_cmd python3 ./openvswitch/ <<
891 "recirc_id(0),tunnel(tun_i <<
892 "${veth_a_port}" <<
893 run_cmd python3 ./openvswitch/ <<
894 "recirc_id(0),tunnel(tun_i <<
895 "${veth_a_port}" <<
896 run_cmd python3 ./openvswitch/ <<
897 "recirc_id(0),tunnel(tun_i <<
898 "${veth_a_port}" <<
899 run_cmd python3 ./openvswitch/ <<
900 "recirc_id(0),in_port(${ve <<
901 "set(tunnel(tun_id=1,ipv6_ <<
902 fi <<
903 } <<
904 <<
905 setup_ovs_via_vswitchd() { <<
906 type="${1}" <<
907 b_addr="${2}" <<
908 <<
909 run_cmd ovs-vsctl add-port ovs_br0 ${t <<
910 set interface ${type}_a type=$ <<
911 options:remote_ip=${b_addr} op <<
912 } <<
913 <<
914 setup_ovs_vxlan_or_geneve() { 848 setup_ovs_vxlan_or_geneve() {
915 type="${1}" 849 type="${1}"
916 a_addr="${2}" 850 a_addr="${2}"
917 b_addr="${3}" 851 b_addr="${3}"
918 dport="6081" <<
919 852
920 if [ "${type}" = "vxlan" ]; then 853 if [ "${type}" = "vxlan" ]; then
921 dport="4789" <<
922 opts="${opts} ttl 64 dstport 4 854 opts="${opts} ttl 64 dstport 4789"
923 opts_b="local ${b_addr}" 855 opts_b="local ${b_addr}"
924 fi 856 fi
925 857
926 setup_ovs_via_internal_utility "${type !! 858 run_cmd ovs-vsctl add-port ovs_br0 ${type}_a -- \
927 "${dpor !! 859 set interface ${type}_a type=${type} \
928 setup_ovs_via_vswitchd "${type}" " !! 860 options:remote_ip=${b_addr} options:key=1 options:csum=true || return 1
929 861
930 run_cmd ${ns_b} ip link add ${type}_b 862 run_cmd ${ns_b} ip link add ${type}_b type ${type} id 1 ${opts_b} remote ${a_addr} ${opts} || return 1
931 863
932 run_cmd ${ns_b} ip addr add ${tunnel4_ 864 run_cmd ${ns_b} ip addr add ${tunnel4_b_addr}/${tunnel4_mask} dev ${type}_b
933 run_cmd ${ns_b} ip addr add ${tunnel6_ 865 run_cmd ${ns_b} ip addr add ${tunnel6_b_addr}/${tunnel6_mask} dev ${type}_b
934 866
935 run_cmd ip link set ${type}_a up <<
936 run_cmd ${ns_b} ip link set ${type}_b 867 run_cmd ${ns_b} ip link set ${type}_b up
937 } 868 }
938 869
939 setup_ovs_geneve4() { 870 setup_ovs_geneve4() {
940 setup_ovs_vxlan_or_geneve geneve ${pre 871 setup_ovs_vxlan_or_geneve geneve ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
941 } 872 }
942 873
943 setup_ovs_vxlan4() { 874 setup_ovs_vxlan4() {
944 setup_ovs_vxlan_or_geneve vxlan ${pre 875 setup_ovs_vxlan_or_geneve vxlan ${prefix4}.${a_r1}.1 ${prefix4}.${b_r1}.1
945 } 876 }
946 877
947 setup_ovs_geneve6() { 878 setup_ovs_geneve6() {
948 setup_ovs_vxlan_or_geneve geneve ${pre 879 setup_ovs_vxlan_or_geneve geneve ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
949 } 880 }
950 881
951 setup_ovs_vxlan6() { 882 setup_ovs_vxlan6() {
952 setup_ovs_vxlan_or_geneve vxlan ${pre 883 setup_ovs_vxlan_or_geneve vxlan ${prefix6}:${a_r1}::1 ${prefix6}:${b_r1}::1
953 } 884 }
954 885
955 setup_ovs_br_internal() { <<
956 run_cmd python3 ./openvswitch/ovs-dpct <<
957 return 1 <<
958 } <<
959 <<
960 setup_ovs_br_vswitchd() { <<
961 run_cmd ovs-vsctl add-br ovs_br0 || re <<
962 } <<
963 <<
964 setup_ovs_add_if() { <<
965 ifname="${1}" <<
966 run_cmd python3 ./openvswitch/ovs-dpct <<
967 "${ifname}" || \ <<
968 run_cmd ovs-vsctl add-port ovs <<
969 } <<
970 <<
971 setup_ovs_bridge() { 886 setup_ovs_bridge() {
972 setup_ovs_br_internal || setup_ovs_br_ !! 887 run_cmd ovs-vsctl add-br ovs_br0 || return $ksft_skip
973 run_cmd ip link set ovs_br0 up 888 run_cmd ip link set ovs_br0 up
974 889
975 run_cmd ${ns_c} ip link add veth_C-A t 890 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 891 run_cmd ${ns_c} ip link set veth_A-C netns 1
977 892
978 run_cmd ip link set veth_A-C u 893 run_cmd ip link set veth_A-C up
979 run_cmd ${ns_c} ip link set veth_C-A u 894 run_cmd ${ns_c} ip link set veth_C-A up
980 run_cmd ${ns_c} ip addr add ${veth4_c_ 895 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_ 896 run_cmd ${ns_c} ip addr add ${veth6_c_addr}/${veth6_mask} dev veth_C-A
982 setup_ovs_add_if veth_A-C !! 897 run_cmd ovs-vsctl add-port ovs_br0 veth_A-C
983 898
984 # Move veth_A-R1 to init 899 # Move veth_A-R1 to init
985 run_cmd ${ns_a} ip link set veth_A-R1 900 run_cmd ${ns_a} ip link set veth_A-R1 netns 1
986 run_cmd ip addr add ${prefix4}.${a_r1} 901 run_cmd ip addr add ${prefix4}.${a_r1}.1/${veth4_mask} dev veth_A-R1
987 run_cmd ip addr add ${prefix6}:${a_r1} 902 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 903 run_cmd ip link set veth_A-R1 up
989 run_cmd ip route add ${prefix4}.${b_r1 904 run_cmd ip route add ${prefix4}.${b_r1}.1 via ${prefix4}.${a_r1}.2
990 run_cmd ip route add ${prefix6}:${b_r1 905 run_cmd ip route add ${prefix6}:${b_r1}::1 via ${prefix6}:${a_r1}::2
991 } 906 }
992 907
993 setup() { 908 setup() {
994 [ "$(id -u)" -ne 0 ] && echo " need t 909 [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip
995 910
996 for arg do 911 for arg do
997 eval setup_${arg} || { echo " 912 eval setup_${arg} || { echo " ${arg} not supported"; return 1; }
998 done 913 done
999 } 914 }
1000 915
1001 trace() { 916 trace() {
1002 [ $TRACING -eq 0 ] && return 917 [ $TRACING -eq 0 ] && return
1003 918
1004 for arg do 919 for arg do
1005 [ "${ns_cmd}" = "" ] && ns_cm 920 [ "${ns_cmd}" = "" ] && ns_cmd="${arg}" && continue
1006 ${ns_cmd} tcpdump --immediate 921 ${ns_cmd} tcpdump --immediate-mode -s 0 -i "${arg}" -w "${name}_${arg}.pcap" 2> /dev/null &
1007 tcpdump_pids="${tcpdump_pids} 922 tcpdump_pids="${tcpdump_pids} $!"
1008 ns_cmd= 923 ns_cmd=
1009 done 924 done
1010 sleep 1 925 sleep 1
1011 } 926 }
1012 927
1013 cleanup_del_ovs_internal() { <<
1014 # squelch the output of the del-if co <<
1015 python3 ./openvswitch/ovs-dpctl.py de <<
1016 python3 ./openvswitch/ovs-dpctl.py de <<
1017 python3 ./openvswitch/ovs-dpctl.py de <<
1018 } <<
1019 <<
1020 cleanup_del_ovs_vswitchd() { <<
1021 ovs-vsctl --if-exists del-port vxlan_ <<
1022 ovs-vsctl --if-exists del-br ovs_br0 <<
1023 } <<
1024 <<
1025 cleanup() { 928 cleanup() {
1026 for pid in ${tcpdump_pids}; do 929 for pid in ${tcpdump_pids}; do
1027 kill ${pid} 930 kill ${pid}
1028 done 931 done
1029 tcpdump_pids= 932 tcpdump_pids=
1030 933
1031 for pid in ${nettest_pids}; do 934 for pid in ${nettest_pids}; do
1032 kill ${pid} 935 kill ${pid}
1033 done 936 done
1034 nettest_pids= 937 nettest_pids=
1035 938
1036 for pid in ${socat_pids}; do 939 for pid in ${socat_pids}; do
1037 kill "${pid}" 940 kill "${pid}"
1038 done 941 done
1039 socat_pids= 942 socat_pids=
1040 943
1041 cleanup_all_ns !! 944 for n in ${NS_A} ${NS_B} ${NS_C} ${NS_R1} ${NS_R2}; do
>> 945 ip netns del ${n} 2> /dev/null
>> 946 done
1042 947
1043 ip link del veth_A-C 2>/de !! 948 ip link del veth_A-C 2>/dev/null
1044 ip link del veth_A-R1 2>/de !! 949 ip link del veth_A-R1 2>/dev/null
1045 cleanup_del_ovs_internal !! 950 ovs-vsctl --if-exists del-port vxlan_a 2>/dev/null
1046 cleanup_del_ovs_vswitchd !! 951 ovs-vsctl --if-exists del-br ovs_br0 2>/dev/null
1047 rm -f "$tmpoutfile" <<
1048 } 952 }
1049 953
1050 mtu() { 954 mtu() {
1051 ns_cmd="${1}" 955 ns_cmd="${1}"
1052 dev="${2}" 956 dev="${2}"
1053 mtu="${3}" 957 mtu="${3}"
1054 958
1055 ${ns_cmd} ip link set dev ${dev} mtu 959 ${ns_cmd} ip link set dev ${dev} mtu ${mtu}
1056 } 960 }
1057 961
1058 mtu_parse() { 962 mtu_parse() {
1059 input="${1}" 963 input="${1}"
1060 964
1061 next=0 965 next=0
1062 for i in ${input}; do 966 for i in ${input}; do
1063 [ ${next} -eq 1 -a "${i}" = " 967 [ ${next} -eq 1 -a "${i}" = "lock" ] && next=2 && continue
1064 [ ${next} -eq 1 ] && echo "${ 968 [ ${next} -eq 1 ] && echo "${i}" && return
1065 [ ${next} -eq 2 ] && echo "lo 969 [ ${next} -eq 2 ] && echo "lock ${i}" && return
1066 [ "${i}" = "mtu" ] && next=1 970 [ "${i}" = "mtu" ] && next=1
1067 done 971 done
1068 } 972 }
1069 973
1070 link_get() { 974 link_get() {
1071 ns_cmd="${1}" 975 ns_cmd="${1}"
1072 name="${2}" 976 name="${2}"
1073 977
1074 ${ns_cmd} ip link show dev "${name}" 978 ${ns_cmd} ip link show dev "${name}"
1075 } 979 }
1076 980
1077 link_get_mtu() { 981 link_get_mtu() {
1078 ns_cmd="${1}" 982 ns_cmd="${1}"
1079 name="${2}" 983 name="${2}"
1080 984
1081 mtu_parse "$(link_get "${ns_cmd}" ${n 985 mtu_parse "$(link_get "${ns_cmd}" ${name})"
1082 } 986 }
1083 987
1084 route_get_dst_exception() { 988 route_get_dst_exception() {
1085 ns_cmd="${1}" 989 ns_cmd="${1}"
1086 dst="${2}" 990 dst="${2}"
1087 dsfield="${3}" 991 dsfield="${3}"
1088 992
1089 if [ -z "${dsfield}" ]; then 993 if [ -z "${dsfield}" ]; then
1090 dsfield=0 994 dsfield=0
1091 fi 995 fi
1092 996
1093 ${ns_cmd} ip route get "${dst}" dsfie 997 ${ns_cmd} ip route get "${dst}" dsfield "${dsfield}"
1094 } 998 }
1095 999
1096 route_get_dst_pmtu_from_exception() { 1000 route_get_dst_pmtu_from_exception() {
1097 ns_cmd="${1}" 1001 ns_cmd="${1}"
1098 dst="${2}" 1002 dst="${2}"
1099 dsfield="${3}" 1003 dsfield="${3}"
1100 1004
1101 mtu_parse "$(route_get_dst_exception 1005 mtu_parse "$(route_get_dst_exception "${ns_cmd}" "${dst}" "${dsfield}")"
1102 } 1006 }
1103 1007
1104 check_pmtu_value() { 1008 check_pmtu_value() {
1105 expected="${1}" 1009 expected="${1}"
1106 value="${2}" 1010 value="${2}"
1107 event="${3}" 1011 event="${3}"
1108 1012
1109 [ "${expected}" = "any" ] && [ -n "${ 1013 [ "${expected}" = "any" ] && [ -n "${value}" ] && return 0
1110 [ "${value}" = "${expected}" ] && ret 1014 [ "${value}" = "${expected}" ] && return 0
1111 [ -z "${value}" ] && err " PMTU e 1015 [ -z "${value}" ] && err " PMTU exception wasn't created after ${event}" && return 1
1112 [ -z "${expected}" ] && err " PMTU e 1016 [ -z "${expected}" ] && err " PMTU exception shouldn't exist after ${event}" && return 1
1113 err " found PMTU exception with inco 1017 err " found PMTU exception with incorrect MTU ${value}, expected ${expected}, after ${event}"
1114 return 1 1018 return 1
1115 } 1019 }
1116 1020
1117 test_pmtu_ipvX() { 1021 test_pmtu_ipvX() {
1118 family=${1} 1022 family=${1}
1119 1023
1120 setup namespaces routing || return $k 1024 setup namespaces routing || return $ksft_skip
1121 trace "${ns_a}" veth_A-R1 "${ns_r 1025 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1122 "${ns_r1}" veth_R1-B "${ns_b 1026 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1123 "${ns_a}" veth_A-R2 "${ns_r 1027 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1124 "${ns_r2}" veth_R2-B "${ns_b 1028 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1125 1029
1126 if [ ${family} -eq 4 ]; then 1030 if [ ${family} -eq 4 ]; then
1127 ping=ping 1031 ping=ping
1128 dst1="${prefix4}.${b_r1}.1" 1032 dst1="${prefix4}.${b_r1}.1"
1129 dst2="${prefix4}.${b_r2}.1" 1033 dst2="${prefix4}.${b_r2}.1"
1130 else 1034 else
1131 ping=${ping6} 1035 ping=${ping6}
1132 dst1="${prefix6}:${b_r1}::1" 1036 dst1="${prefix6}:${b_r1}::1"
1133 dst2="${prefix6}:${b_r2}::1" 1037 dst2="${prefix6}:${b_r2}::1"
1134 fi 1038 fi
1135 1039
1136 # Set up initial MTU values 1040 # Set up initial MTU values
1137 mtu "${ns_a}" veth_A-R1 2000 1041 mtu "${ns_a}" veth_A-R1 2000
1138 mtu "${ns_r1}" veth_R1-A 2000 1042 mtu "${ns_r1}" veth_R1-A 2000
1139 mtu "${ns_r1}" veth_R1-B 1400 1043 mtu "${ns_r1}" veth_R1-B 1400
1140 mtu "${ns_b}" veth_B-R1 1400 1044 mtu "${ns_b}" veth_B-R1 1400
1141 1045
1142 mtu "${ns_a}" veth_A-R2 2000 1046 mtu "${ns_a}" veth_A-R2 2000
1143 mtu "${ns_r2}" veth_R2-A 2000 1047 mtu "${ns_r2}" veth_R2-A 2000
1144 mtu "${ns_r2}" veth_R2-B 1500 1048 mtu "${ns_r2}" veth_R2-B 1500
1145 mtu "${ns_b}" veth_B-R2 1500 1049 mtu "${ns_b}" veth_B-R2 1500
1146 1050
1147 # Create route exceptions 1051 # Create route exceptions
1148 run_cmd ${ns_a} ${ping} -q -M want -i 1052 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 1053 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
1150 1054
1151 # Check that exceptions have been cre 1055 # Check that exceptions have been created with the correct PMTU
1152 pmtu_1="$(route_get_dst_pmtu_from_exc 1056 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1153 check_pmtu_value "1400" "${pmtu_1}" " 1057 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1154 pmtu_2="$(route_get_dst_pmtu_from_exc 1058 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1155 check_pmtu_value "1500" "${pmtu_2}" " 1059 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1156 1060
1157 # Decrease local MTU below PMTU, chec 1061 # Decrease local MTU below PMTU, check for PMTU decrease in route exception
1158 mtu "${ns_a}" veth_A-R1 1300 1062 mtu "${ns_a}" veth_A-R1 1300
1159 mtu "${ns_r1}" veth_R1-A 1300 1063 mtu "${ns_r1}" veth_R1-A 1300
1160 pmtu_1="$(route_get_dst_pmtu_from_exc 1064 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1161 check_pmtu_value "1300" "${pmtu_1}" " 1065 check_pmtu_value "1300" "${pmtu_1}" "decreasing local MTU" || return 1
1162 # Second exception shouldn't be modif 1066 # Second exception shouldn't be modified
1163 pmtu_2="$(route_get_dst_pmtu_from_exc 1067 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1164 check_pmtu_value "1500" "${pmtu_2}" " 1068 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1165 1069
1166 # Increase MTU, check for PMTU increa 1070 # Increase MTU, check for PMTU increase in route exception
1167 mtu "${ns_a}" veth_A-R1 1700 1071 mtu "${ns_a}" veth_A-R1 1700
1168 mtu "${ns_r1}" veth_R1-A 1700 1072 mtu "${ns_r1}" veth_R1-A 1700
1169 pmtu_1="$(route_get_dst_pmtu_from_exc 1073 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
1170 check_pmtu_value "1700" "${pmtu_1}" " 1074 check_pmtu_value "1700" "${pmtu_1}" "increasing local MTU" || return 1
1171 # Second exception shouldn't be modif 1075 # Second exception shouldn't be modified
1172 pmtu_2="$(route_get_dst_pmtu_from_exc 1076 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1173 check_pmtu_value "1500" "${pmtu_2}" " 1077 check_pmtu_value "1500" "${pmtu_2}" "changing local MTU on a link not on this path" || return 1
1174 1078
1175 # Skip PMTU locking tests for IPv6 1079 # Skip PMTU locking tests for IPv6
1176 [ $family -eq 6 ] && return 0 1080 [ $family -eq 6 ] && return 0
1177 1081
1178 # Decrease remote MTU on path via R2, 1082 # Decrease remote MTU on path via R2, get new exception
1179 mtu "${ns_r2}" veth_R2-B 400 1083 mtu "${ns_r2}" veth_R2-B 400
1180 mtu "${ns_b}" veth_B-R2 400 1084 mtu "${ns_b}" veth_B-R2 400
1181 run_cmd ${ns_a} ${ping} -q -M want -i 1085 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 1086 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1183 check_pmtu_value "lock 552" "${pmtu_2 1087 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1184 1088
1185 # Decrease local MTU below PMTU 1089 # Decrease local MTU below PMTU
1186 mtu "${ns_a}" veth_A-R2 500 1090 mtu "${ns_a}" veth_A-R2 500
1187 mtu "${ns_r2}" veth_R2-A 500 1091 mtu "${ns_r2}" veth_R2-A 500
1188 pmtu_2="$(route_get_dst_pmtu_from_exc 1092 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1189 check_pmtu_value "500" "${pmtu_2}" "d 1093 check_pmtu_value "500" "${pmtu_2}" "decreasing local MTU" || return 1
1190 1094
1191 # Increase local MTU 1095 # Increase local MTU
1192 mtu "${ns_a}" veth_A-R2 1500 1096 mtu "${ns_a}" veth_A-R2 1500
1193 mtu "${ns_r2}" veth_R2-A 1500 1097 mtu "${ns_r2}" veth_R2-A 1500
1194 pmtu_2="$(route_get_dst_pmtu_from_exc 1098 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1195 check_pmtu_value "1500" "${pmtu_2}" " 1099 check_pmtu_value "1500" "${pmtu_2}" "increasing local MTU" || return 1
1196 1100
1197 # Get new exception 1101 # Get new exception
1198 run_cmd ${ns_a} ${ping} -q -M want -i 1102 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 1103 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
1200 check_pmtu_value "lock 552" "${pmtu_2 1104 check_pmtu_value "lock 552" "${pmtu_2}" "exceeding MTU, with MTU < min_pmtu" || return 1
1201 } 1105 }
1202 1106
1203 test_pmtu_ipv4_exception() { 1107 test_pmtu_ipv4_exception() {
1204 test_pmtu_ipvX 4 1108 test_pmtu_ipvX 4
1205 } 1109 }
1206 1110
1207 test_pmtu_ipv6_exception() { 1111 test_pmtu_ipv6_exception() {
1208 test_pmtu_ipvX 6 1112 test_pmtu_ipvX 6
1209 } 1113 }
1210 1114
1211 test_pmtu_ipv4_dscp_icmp_exception() { 1115 test_pmtu_ipv4_dscp_icmp_exception() {
1212 rt_table=100 1116 rt_table=100
1213 1117
1214 setup namespaces policy_routing || re 1118 setup namespaces policy_routing || return $ksft_skip
1215 trace "${ns_a}" veth_A-R1 "${ns_r 1119 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1216 "${ns_r1}" veth_R1-B "${ns_b 1120 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1217 "${ns_a}" veth_A-R2 "${ns_r 1121 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1218 "${ns_r2}" veth_R2-B "${ns_b 1122 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1219 1123
1220 # Set up initial MTU values 1124 # Set up initial MTU values
1221 mtu "${ns_a}" veth_A-R1 2000 1125 mtu "${ns_a}" veth_A-R1 2000
1222 mtu "${ns_r1}" veth_R1-A 2000 1126 mtu "${ns_r1}" veth_R1-A 2000
1223 mtu "${ns_r1}" veth_R1-B 1400 1127 mtu "${ns_r1}" veth_R1-B 1400
1224 mtu "${ns_b}" veth_B-R1 1400 1128 mtu "${ns_b}" veth_B-R1 1400
1225 1129
1226 mtu "${ns_a}" veth_A-R2 2000 1130 mtu "${ns_a}" veth_A-R2 2000
1227 mtu "${ns_r2}" veth_R2-A 2000 1131 mtu "${ns_r2}" veth_R2-A 2000
1228 mtu "${ns_r2}" veth_R2-B 1500 1132 mtu "${ns_r2}" veth_R2-B 1500
1229 mtu "${ns_b}" veth_B-R2 1500 1133 mtu "${ns_b}" veth_B-R2 1500
1230 1134
1231 len=$((2000 - 20 - 8)) # Fills MTU of 1135 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1232 1136
1233 dst1="${prefix4}.${b_r1}.1" 1137 dst1="${prefix4}.${b_r1}.1"
1234 dst2="${prefix4}.${b_r2}.1" 1138 dst2="${prefix4}.${b_r2}.1"
1235 1139
1236 # Create route exceptions 1140 # Create route exceptions
1237 dsfield=${policy_mark} # No ECN bit s 1141 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1238 run_cmd "${ns_a}" ping -q -M want -Q 1142 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst1}"
1239 1143
1240 dsfield=$(printf "%#x" $((policy_mark 1144 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1241 run_cmd "${ns_a}" ping -q -M want -Q 1145 run_cmd "${ns_a}" ping -q -M want -Q "${dsfield}" -c 1 -w 1 -s "${len}" "${dst2}"
1242 1146
1243 # Check that exceptions have been cre 1147 # Check that exceptions have been created with the correct PMTU
1244 pmtu_1="$(route_get_dst_pmtu_from_exc 1148 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" "${policy_mark}")"
1245 check_pmtu_value "1400" "${pmtu_1}" " 1149 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1246 1150
1247 pmtu_2="$(route_get_dst_pmtu_from_exc 1151 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" "${policy_mark}")"
1248 check_pmtu_value "1500" "${pmtu_2}" " 1152 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1249 } 1153 }
1250 1154
1251 test_pmtu_ipv4_dscp_udp_exception() { 1155 test_pmtu_ipv4_dscp_udp_exception() {
1252 rt_table=100 1156 rt_table=100
1253 1157
1254 if ! which socat > /dev/null 2>&1; th 1158 if ! which socat > /dev/null 2>&1; then
1255 echo "'socat' command not fou 1159 echo "'socat' command not found; skipping tests"
1256 return $ksft_skip 1160 return $ksft_skip
1257 fi 1161 fi
1258 1162
1259 setup namespaces policy_routing || re 1163 setup namespaces policy_routing || return $ksft_skip
1260 trace "${ns_a}" veth_A-R1 "${ns_r 1164 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1261 "${ns_r1}" veth_R1-B "${ns_b 1165 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
1262 "${ns_a}" veth_A-R2 "${ns_r 1166 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
1263 "${ns_r2}" veth_R2-B "${ns_b 1167 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
1264 1168
1265 # Set up initial MTU values 1169 # Set up initial MTU values
1266 mtu "${ns_a}" veth_A-R1 2000 1170 mtu "${ns_a}" veth_A-R1 2000
1267 mtu "${ns_r1}" veth_R1-A 2000 1171 mtu "${ns_r1}" veth_R1-A 2000
1268 mtu "${ns_r1}" veth_R1-B 1400 1172 mtu "${ns_r1}" veth_R1-B 1400
1269 mtu "${ns_b}" veth_B-R1 1400 1173 mtu "${ns_b}" veth_B-R1 1400
1270 1174
1271 mtu "${ns_a}" veth_A-R2 2000 1175 mtu "${ns_a}" veth_A-R2 2000
1272 mtu "${ns_r2}" veth_R2-A 2000 1176 mtu "${ns_r2}" veth_R2-A 2000
1273 mtu "${ns_r2}" veth_R2-B 1500 1177 mtu "${ns_r2}" veth_R2-B 1500
1274 mtu "${ns_b}" veth_B-R2 1500 1178 mtu "${ns_b}" veth_B-R2 1500
1275 1179
1276 len=$((2000 - 20 - 8)) # Fills MTU of 1180 len=$((2000 - 20 - 8)) # Fills MTU of veth_A-R1
1277 1181
1278 dst1="${prefix4}.${b_r1}.1" 1182 dst1="${prefix4}.${b_r1}.1"
1279 dst2="${prefix4}.${b_r2}.1" 1183 dst2="${prefix4}.${b_r2}.1"
1280 1184
1281 # Create route exceptions 1185 # Create route exceptions
1282 run_cmd_bg "${ns_b}" socat UDP-LISTEN 1186 run_cmd_bg "${ns_b}" socat UDP-LISTEN:50000 OPEN:/dev/null,wronly=1
1283 socat_pids="${socat_pids} $!" 1187 socat_pids="${socat_pids} $!"
1284 1188
1285 dsfield=${policy_mark} # No ECN bit s 1189 dsfield=${policy_mark} # No ECN bit set (Not-ECT)
1286 run_cmd "${ns_a}" socat OPEN:/dev/zer 1190 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1287 UDP:"${dst1}":50000,tos="${ds 1191 UDP:"${dst1}":50000,tos="${dsfield}"
1288 1192
1289 dsfield=$(printf "%#x" $((policy_mark 1193 dsfield=$(printf "%#x" $((policy_mark + 0x02))) # ECN=2 (ECT(0))
1290 run_cmd "${ns_a}" socat OPEN:/dev/zer 1194 run_cmd "${ns_a}" socat OPEN:/dev/zero,rdonly=1,readbytes="${len}" \
1291 UDP:"${dst2}":50000,tos="${ds 1195 UDP:"${dst2}":50000,tos="${dsfield}"
1292 1196
1293 # Check that exceptions have been cre 1197 # Check that exceptions have been created with the correct PMTU
1294 pmtu_1="$(route_get_dst_pmtu_from_exc 1198 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst1}" "${policy_mark}")"
1295 check_pmtu_value "1400" "${pmtu_1}" " 1199 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
1296 pmtu_2="$(route_get_dst_pmtu_from_exc 1200 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst2}" "${policy_mark}")"
1297 check_pmtu_value "1500" "${pmtu_2}" " 1201 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
1298 } 1202 }
1299 1203
1300 test_pmtu_ipvX_over_vxlanY_or_geneveY_excepti 1204 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception() {
1301 type=${1} 1205 type=${1}
1302 family=${2} 1206 family=${2}
1303 outer_family=${3} 1207 outer_family=${3}
1304 ll_mtu=4000 1208 ll_mtu=4000
1305 1209
1306 if [ ${outer_family} -eq 4 ]; then 1210 if [ ${outer_family} -eq 4 ]; then
1307 setup namespaces routing ${ty 1211 setup namespaces routing ${type}4 || return $ksft_skip
1308 # IPv4 h 1212 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1309 exp_mtu=$((${ll_mtu} - 20 1213 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1310 else 1214 else
1311 setup namespaces routing ${ty 1215 setup namespaces routing ${type}6 || return $ksft_skip
1312 # IPv6 h 1216 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1313 exp_mtu=$((${ll_mtu} - 40 1217 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1314 fi 1218 fi
1315 1219
1316 trace "${ns_a}" ${type}_a "${ns_b} 1220 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1317 "${ns_a}" veth_A-R1 "${ns_r1 1221 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1318 "${ns_b}" veth_B-R1 "${ns_r1 1222 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1319 1223
1320 if [ ${family} -eq 4 ]; then 1224 if [ ${family} -eq 4 ]; then
1321 ping=ping 1225 ping=ping
1322 dst=${tunnel4_b_addr} 1226 dst=${tunnel4_b_addr}
1323 else 1227 else
1324 ping=${ping6} 1228 ping=${ping6}
1325 dst=${tunnel6_b_addr} 1229 dst=${tunnel6_b_addr}
1326 fi 1230 fi
1327 1231
1328 # Create route exception by exceeding 1232 # Create route exception by exceeding link layer MTU
1329 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1233 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1330 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1234 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1331 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1235 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1332 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1236 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1333 1237
1334 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1238 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1335 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1239 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1336 run_cmd ${ns_a} ${ping} -q -M want -i 1240 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1337 1241
1338 # Check that exception was created 1242 # Check that exception was created
1339 pmtu="$(route_get_dst_pmtu_from_excep 1243 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1340 check_pmtu_value ${exp_mtu} "${pmtu}" 1244 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${type} interface"
1341 } 1245 }
1342 1246
1343 test_pmtu_ipv4_vxlan4_exception() { 1247 test_pmtu_ipv4_vxlan4_exception() {
1344 test_pmtu_ipvX_over_vxlanY_or_geneveY 1248 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 4
1345 } 1249 }
1346 1250
1347 test_pmtu_ipv6_vxlan4_exception() { 1251 test_pmtu_ipv6_vxlan4_exception() {
1348 test_pmtu_ipvX_over_vxlanY_or_geneveY 1252 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 4
1349 } 1253 }
1350 1254
1351 test_pmtu_ipv4_geneve4_exception() { 1255 test_pmtu_ipv4_geneve4_exception() {
1352 test_pmtu_ipvX_over_vxlanY_or_geneveY 1256 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 4
1353 } 1257 }
1354 1258
1355 test_pmtu_ipv6_geneve4_exception() { 1259 test_pmtu_ipv6_geneve4_exception() {
1356 test_pmtu_ipvX_over_vxlanY_or_geneveY 1260 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 4
1357 } 1261 }
1358 1262
1359 test_pmtu_ipv4_vxlan6_exception() { 1263 test_pmtu_ipv4_vxlan6_exception() {
1360 test_pmtu_ipvX_over_vxlanY_or_geneveY 1264 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 4 6
1361 } 1265 }
1362 1266
1363 test_pmtu_ipv6_vxlan6_exception() { 1267 test_pmtu_ipv6_vxlan6_exception() {
1364 test_pmtu_ipvX_over_vxlanY_or_geneveY 1268 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception vxlan 6 6
1365 } 1269 }
1366 1270
1367 test_pmtu_ipv4_geneve6_exception() { 1271 test_pmtu_ipv4_geneve6_exception() {
1368 test_pmtu_ipvX_over_vxlanY_or_geneveY 1272 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 4 6
1369 } 1273 }
1370 1274
1371 test_pmtu_ipv6_geneve6_exception() { 1275 test_pmtu_ipv6_geneve6_exception() {
1372 test_pmtu_ipvX_over_vxlanY_or_geneveY 1276 test_pmtu_ipvX_over_vxlanY_or_geneveY_exception geneve 6 6
1373 } 1277 }
1374 1278
1375 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY 1279 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() {
1376 type=${1} 1280 type=${1}
1377 family=${2} 1281 family=${2}
1378 outer_family=${3} 1282 outer_family=${3}
1379 ll_mtu=4000 1283 ll_mtu=4000
1380 1284
1381 if [ ${outer_family} -eq 4 ]; then 1285 if [ ${outer_family} -eq 4 ]; then
1382 setup namespaces routing brid 1286 setup namespaces routing bridge bridged_${type}4 || return $ksft_skip
1383 # IPv4 h 1287 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1384 exp_mtu=$((${ll_mtu} - 20 1288 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1385 else 1289 else
1386 setup namespaces routing brid 1290 setup namespaces routing bridge bridged_${type}6 || return $ksft_skip
1387 # IPv6 h 1291 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1388 exp_mtu=$((${ll_mtu} - 40 1292 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1389 fi 1293 fi
1390 1294
1391 trace "${ns_a}" ${type}_a "${ns_b} 1295 trace "${ns_a}" ${type}_a "${ns_b}" ${type}_b \
1392 "${ns_a}" veth_A-R1 "${ns_r1 1296 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1393 "${ns_b}" veth_B-R1 "${ns_r1 1297 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
1394 "${ns_a}" br0 "${ns_a} 1298 "${ns_a}" br0 "${ns_a}" veth-A-C \
1395 "${ns_c}" veth_C-A 1299 "${ns_c}" veth_C-A
1396 1300
1397 if [ ${family} -eq 4 ]; then 1301 if [ ${family} -eq 4 ]; then
1398 ping=ping 1302 ping=ping
1399 dst=${tunnel4_b_addr} 1303 dst=${tunnel4_b_addr}
1400 else 1304 else
1401 ping=${ping6} 1305 ping=${ping6}
1402 dst=${tunnel6_b_addr} 1306 dst=${tunnel6_b_addr}
1403 fi 1307 fi
1404 1308
1405 # Create route exception by exceeding 1309 # Create route exception by exceeding link layer MTU
1406 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1310 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1407 mtu "${ns_a}" br0 $((${ll_mtu} 1311 mtu "${ns_a}" br0 $((${ll_mtu} + 1000))
1408 mtu "${ns_a}" veth_A-C $((${ll_mtu} 1312 mtu "${ns_a}" veth_A-C $((${ll_mtu} + 1000))
1409 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1313 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1410 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1314 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1411 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1315 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1412 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1316 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1413 1317
1414 mtu "${ns_a}" ${type}_a $((${ll_mtu} 1318 mtu "${ns_a}" ${type}_a $((${ll_mtu} + 1000))
1415 mtu "${ns_b}" ${type}_b $((${ll_mtu} 1319 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1416 1320
1417 run_cmd ${ns_c} ${ping} -q -M want -i 1321 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 1322 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst} || return 1
1419 1323
1420 # Check that exceptions were created 1324 # Check that exceptions were created
1421 pmtu="$(route_get_dst_pmtu_from_excep 1325 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1422 check_pmtu_value ${exp_mtu} "${pmtu}" 1326 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on bridged ${type} interface"
1423 pmtu="$(route_get_dst_pmtu_from_excep 1327 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1424 check_pmtu_value ${exp_mtu} "${pmtu}" 1328 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on locally bridged ${type} interface"
1425 <<
1426 tmpoutfile=$(mktemp) <<
1427 <<
1428 # Flush Exceptions, retry with TCP <<
1429 run_cmd ${ns_a} ip route flush cached <<
1430 run_cmd ${ns_b} ip route flush cached <<
1431 run_cmd ${ns_c} ip route flush cached <<
1432 <<
1433 for target in "${ns_a}" "${ns_c}" ; d <<
1434 if [ ${family} -eq 4 ]; then <<
1435 TCPDST=TCP:${dst}:500 <<
1436 else <<
1437 TCPDST="TCP:[${dst}]: <<
1438 fi <<
1439 ${ns_b} socat -T 3 -u -6 TCP- <<
1440 local socat_pid=$! <<
1441 <<
1442 wait_local_port_listen ${NS_B <<
1443 <<
1444 dd if=/dev/zero status=none b <<
1445 <<
1446 wait ${socat_pid} <<
1447 size=$(du -sb $tmpoutfile) <<
1448 size=${size%%/tmp/*} <<
1449 <<
1450 [ $size -ne 1048576 ] && err <<
1451 done <<
1452 <<
1453 rm -f "$tmpoutfile" <<
1454 <<
1455 # Check that exceptions were created <<
1456 pmtu="$(route_get_dst_pmtu_from_excep <<
1457 check_pmtu_value ${exp_mtu} "${pmtu}" <<
1458 pmtu="$(route_get_dst_pmtu_from_excep <<
1459 check_pmtu_value ${exp_mtu} "${pmtu}" <<
1460 } 1329 }
1461 1330
1462 test_pmtu_ipv4_br_vxlan4_exception() { 1331 test_pmtu_ipv4_br_vxlan4_exception() {
1463 test_pmtu_ipvX_over_bridged_vxlanY_or 1332 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 4
1464 } 1333 }
1465 1334
1466 test_pmtu_ipv6_br_vxlan4_exception() { 1335 test_pmtu_ipv6_br_vxlan4_exception() {
1467 test_pmtu_ipvX_over_bridged_vxlanY_or 1336 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 4
1468 } 1337 }
1469 1338
1470 test_pmtu_ipv4_br_geneve4_exception() { 1339 test_pmtu_ipv4_br_geneve4_exception() {
1471 test_pmtu_ipvX_over_bridged_vxlanY_or 1340 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 4
1472 } 1341 }
1473 1342
1474 test_pmtu_ipv6_br_geneve4_exception() { 1343 test_pmtu_ipv6_br_geneve4_exception() {
1475 test_pmtu_ipvX_over_bridged_vxlanY_or 1344 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 4
1476 } 1345 }
1477 1346
1478 test_pmtu_ipv4_br_vxlan6_exception() { 1347 test_pmtu_ipv4_br_vxlan6_exception() {
1479 test_pmtu_ipvX_over_bridged_vxlanY_or 1348 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 4 6
1480 } 1349 }
1481 1350
1482 test_pmtu_ipv6_br_vxlan6_exception() { 1351 test_pmtu_ipv6_br_vxlan6_exception() {
1483 test_pmtu_ipvX_over_bridged_vxlanY_or 1352 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception vxlan 6 6
1484 } 1353 }
1485 1354
1486 test_pmtu_ipv4_br_geneve6_exception() { 1355 test_pmtu_ipv4_br_geneve6_exception() {
1487 test_pmtu_ipvX_over_bridged_vxlanY_or 1356 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 4 6
1488 } 1357 }
1489 1358
1490 test_pmtu_ipv6_br_geneve6_exception() { 1359 test_pmtu_ipv6_br_geneve6_exception() {
1491 test_pmtu_ipvX_over_bridged_vxlanY_or 1360 test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception geneve 6 6
1492 } 1361 }
1493 1362
1494 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exc 1363 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception() {
1495 type=${1} 1364 type=${1}
1496 family=${2} 1365 family=${2}
1497 outer_family=${3} 1366 outer_family=${3}
1498 ll_mtu=4000 1367 ll_mtu=4000
1499 1368
1500 if [ "${type}" = "vxlan" ]; then <<
1501 tun_a="vxlan_sys_4789" <<
1502 elif [ "${type}" = "geneve" ]; then <<
1503 tun_a="genev_sys_6081" <<
1504 fi <<
1505 <<
1506 if [ ${outer_family} -eq 4 ]; then 1369 if [ ${outer_family} -eq 4 ]; then
1507 setup namespaces routing ovs_ 1370 setup namespaces routing ovs_bridge ovs_${type}4 || return $ksft_skip
1508 # IPv4 h 1371 # IPv4 header UDP header VXLAN/GENEVE header Ethernet header
1509 exp_mtu=$((${ll_mtu} - 20 1372 exp_mtu=$((${ll_mtu} - 20 - 8 - 8 - 14))
1510 else 1373 else
1511 setup namespaces routing ovs_ 1374 setup namespaces routing ovs_bridge ovs_${type}6 || return $ksft_skip
1512 # IPv6 h 1375 # IPv6 header UDP header VXLAN/GENEVE header Ethernet header
1513 exp_mtu=$((${ll_mtu} - 40 1376 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - 14))
1514 fi 1377 fi
1515 1378
1516 trace "" ${type}_a "${ns_b} !! 1379 if [ "${type}" = "vxlan" ]; then
1517 "" veth_A-R1 "${ns_r1 !! 1380 tun_a="vxlan_sys_4789"
1518 "${ns_b}" veth_B-R1 "${ns_r1 !! 1381 elif [ "${type}" = "geneve" ]; then
1519 "" ovs_br0 "" !! 1382 tun_a="genev_sys_6081"
1520 "${ns_c}" veth_C-A "" !! 1383 fi
>> 1384
>> 1385 trace "" "${tun_a}" "${ns_b}" ${type}_b \
>> 1386 "" veth_A-R1 "${ns_r1}" veth_R1-A \
>> 1387 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B \
>> 1388 "" ovs_br0 "" veth-A-C \
>> 1389 "${ns_c}" veth_C-A
1521 1390
1522 if [ ${family} -eq 4 ]; then 1391 if [ ${family} -eq 4 ]; then
1523 ping=ping 1392 ping=ping
1524 dst=${tunnel4_b_addr} 1393 dst=${tunnel4_b_addr}
1525 else 1394 else
1526 ping=${ping6} 1395 ping=${ping6}
1527 dst=${tunnel6_b_addr} 1396 dst=${tunnel6_b_addr}
1528 fi 1397 fi
1529 1398
1530 # Create route exception by exceeding 1399 # Create route exception by exceeding link layer MTU
1531 mtu "" veth_A-R1 $((${ll_mtu} 1400 mtu "" veth_A-R1 $((${ll_mtu} + 1000))
1532 mtu "" ovs_br0 $((${ll_mtu} 1401 mtu "" ovs_br0 $((${ll_mtu} + 1000))
1533 mtu "" veth_A-C $((${ll_mtu} 1402 mtu "" veth_A-C $((${ll_mtu} + 1000))
1534 mtu "${ns_c}" veth_C-A $((${ll_mtu} 1403 mtu "${ns_c}" veth_C-A $((${ll_mtu} + 1000))
1535 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1404 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1536 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1405 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1537 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1406 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1538 1407
1539 mtu "" ${tun_a} $((${ll_mtu} !! 1408 mtu "" ${tun_a} $((${ll_mtu} + 1000))
1540 mtu "" ${type}_a $(($ !! 1409 mtu "${ns_b}" ${type}_b $((${ll_mtu} + 1000))
1541 mtu "${ns_b}" ${type}_b $((${ll_mtu} <<
1542 1410
1543 run_cmd ${ns_c} ${ping} -q -M want -i 1411 run_cmd ${ns_c} ${ping} -q -M want -i 0.1 -c 20 -s $((${ll_mtu} + 500)) ${dst} || return 1
1544 1412
1545 # Check that exceptions were created 1413 # Check that exceptions were created
1546 pmtu="$(route_get_dst_pmtu_from_excep 1414 pmtu="$(route_get_dst_pmtu_from_exception "${ns_c}" ${dst})"
1547 check_pmtu_value ${exp_mtu} "${pmtu}" 1415 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on Open vSwitch ${type} interface"
1548 } 1416 }
1549 1417
1550 test_pmtu_ipv4_ovs_vxlan4_exception() { 1418 test_pmtu_ipv4_ovs_vxlan4_exception() {
1551 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1419 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 4
1552 } 1420 }
1553 1421
1554 test_pmtu_ipv6_ovs_vxlan4_exception() { 1422 test_pmtu_ipv6_ovs_vxlan4_exception() {
1555 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1423 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 4
1556 } 1424 }
1557 1425
1558 test_pmtu_ipv4_ovs_geneve4_exception() { 1426 test_pmtu_ipv4_ovs_geneve4_exception() {
1559 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1427 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 4
1560 } 1428 }
1561 1429
1562 test_pmtu_ipv6_ovs_geneve4_exception() { 1430 test_pmtu_ipv6_ovs_geneve4_exception() {
1563 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1431 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 4
1564 } 1432 }
1565 1433
1566 test_pmtu_ipv4_ovs_vxlan6_exception() { 1434 test_pmtu_ipv4_ovs_vxlan6_exception() {
1567 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1435 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 4 6
1568 } 1436 }
1569 1437
1570 test_pmtu_ipv6_ovs_vxlan6_exception() { 1438 test_pmtu_ipv6_ovs_vxlan6_exception() {
1571 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1439 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception vxlan 6 6
1572 } 1440 }
1573 1441
1574 test_pmtu_ipv4_ovs_geneve6_exception() { 1442 test_pmtu_ipv4_ovs_geneve6_exception() {
1575 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1443 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 4 6
1576 } 1444 }
1577 1445
1578 test_pmtu_ipv6_ovs_geneve6_exception() { 1446 test_pmtu_ipv6_ovs_geneve6_exception() {
1579 test_pmtu_ipvX_over_ovs_vxlanY_or_gen 1447 test_pmtu_ipvX_over_ovs_vxlanY_or_geneveY_exception geneve 6 6
1580 } 1448 }
1581 1449
1582 test_pmtu_ipvX_over_fouY_or_gueY() { 1450 test_pmtu_ipvX_over_fouY_or_gueY() {
1583 inner_family=${1} 1451 inner_family=${1}
1584 outer_family=${2} 1452 outer_family=${2}
1585 encap=${3} 1453 encap=${3}
1586 ll_mtu=4000 1454 ll_mtu=4000
1587 1455
1588 setup namespaces routing ${encap}${ou 1456 setup namespaces routing ${encap}${outer_family}${inner_family} || return $ksft_skip
1589 trace "${ns_a}" ${encap}_a "${ns_b} 1457 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
1590 "${ns_a}" veth_A-R1 "${ns_r1 1458 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1591 "${ns_b}" veth_B-R1 "${ns_r1 1459 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1592 1460
1593 if [ ${inner_family} -eq 4 ]; then 1461 if [ ${inner_family} -eq 4 ]; then
1594 ping=ping 1462 ping=ping
1595 dst=${tunnel4_b_addr} 1463 dst=${tunnel4_b_addr}
1596 else 1464 else
1597 ping=${ping6} 1465 ping=${ping6}
1598 dst=${tunnel6_b_addr} 1466 dst=${tunnel6_b_addr}
1599 fi 1467 fi
1600 1468
1601 if [ "${encap}" = "gue" ]; then 1469 if [ "${encap}" = "gue" ]; then
1602 encap_overhead=4 1470 encap_overhead=4
1603 else 1471 else
1604 encap_overhead=0 1472 encap_overhead=0
1605 fi 1473 fi
1606 1474
1607 if [ ${outer_family} -eq 4 ]; then 1475 if [ ${outer_family} -eq 4 ]; then
1608 # IPv4 h 1476 # IPv4 header UDP header
1609 exp_mtu=$((${ll_mtu} - 20 1477 exp_mtu=$((${ll_mtu} - 20 - 8 - ${encap_overhead}))
1610 else 1478 else
1611 # IPv6 h 1479 # IPv6 header Option 4 UDP header
1612 exp_mtu=$((${ll_mtu} - 40 1480 exp_mtu=$((${ll_mtu} - 40 - 8 - 8 - ${encap_overhead}))
1613 fi 1481 fi
1614 1482
1615 # Create route exception by exceeding 1483 # Create route exception by exceeding link layer MTU
1616 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1484 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1617 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1485 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1618 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1486 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1619 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1487 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1620 1488
1621 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 1489 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
1622 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 1490 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
1623 run_cmd ${ns_a} ${ping} -q -M want -i 1491 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1624 1492
1625 # Check that exception was created 1493 # Check that exception was created
1626 pmtu="$(route_get_dst_pmtu_from_excep 1494 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1627 check_pmtu_value ${exp_mtu} "${pmtu}" 1495 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ${encap} interface"
1628 } 1496 }
1629 1497
1630 test_pmtu_ipv4_fou4_exception() { 1498 test_pmtu_ipv4_fou4_exception() {
1631 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1499 test_pmtu_ipvX_over_fouY_or_gueY 4 4 fou
1632 } 1500 }
1633 1501
1634 test_pmtu_ipv6_fou4_exception() { 1502 test_pmtu_ipv6_fou4_exception() {
1635 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1503 test_pmtu_ipvX_over_fouY_or_gueY 6 4 fou
1636 } 1504 }
1637 1505
1638 test_pmtu_ipv4_fou6_exception() { 1506 test_pmtu_ipv4_fou6_exception() {
1639 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1507 test_pmtu_ipvX_over_fouY_or_gueY 4 6 fou
1640 } 1508 }
1641 1509
1642 test_pmtu_ipv6_fou6_exception() { 1510 test_pmtu_ipv6_fou6_exception() {
1643 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1511 test_pmtu_ipvX_over_fouY_or_gueY 6 6 fou
1644 } 1512 }
1645 1513
1646 test_pmtu_ipv4_gue4_exception() { 1514 test_pmtu_ipv4_gue4_exception() {
1647 test_pmtu_ipvX_over_fouY_or_gueY 4 4 1515 test_pmtu_ipvX_over_fouY_or_gueY 4 4 gue
1648 } 1516 }
1649 1517
1650 test_pmtu_ipv6_gue4_exception() { 1518 test_pmtu_ipv6_gue4_exception() {
1651 test_pmtu_ipvX_over_fouY_or_gueY 6 4 1519 test_pmtu_ipvX_over_fouY_or_gueY 6 4 gue
1652 } 1520 }
1653 1521
1654 test_pmtu_ipv4_gue6_exception() { 1522 test_pmtu_ipv4_gue6_exception() {
1655 test_pmtu_ipvX_over_fouY_or_gueY 4 6 1523 test_pmtu_ipvX_over_fouY_or_gueY 4 6 gue
1656 } 1524 }
1657 1525
1658 test_pmtu_ipv6_gue6_exception() { 1526 test_pmtu_ipv6_gue6_exception() {
1659 test_pmtu_ipvX_over_fouY_or_gueY 6 6 1527 test_pmtu_ipvX_over_fouY_or_gueY 6 6 gue
1660 } 1528 }
1661 1529
1662 test_pmtu_ipvX_over_ipvY_exception() { 1530 test_pmtu_ipvX_over_ipvY_exception() {
1663 inner=${1} 1531 inner=${1}
1664 outer=${2} 1532 outer=${2}
1665 ll_mtu=4000 1533 ll_mtu=4000
1666 1534
1667 setup namespaces routing ip${inner}ip 1535 setup namespaces routing ip${inner}ip${outer} || return $ksft_skip
1668 1536
1669 trace "${ns_a}" ip_a "${ns_b} 1537 trace "${ns_a}" ip_a "${ns_b}" ip_b \
1670 "${ns_a}" veth_A-R1 "${ns_r1 1538 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
1671 "${ns_b}" veth_B-R1 "${ns_r1 1539 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
1672 1540
1673 if [ ${inner} -eq 4 ]; then 1541 if [ ${inner} -eq 4 ]; then
1674 ping=ping 1542 ping=ping
1675 dst=${tunnel4_b_addr} 1543 dst=${tunnel4_b_addr}
1676 else 1544 else
1677 ping=${ping6} 1545 ping=${ping6}
1678 dst=${tunnel6_b_addr} 1546 dst=${tunnel6_b_addr}
1679 fi 1547 fi
1680 1548
1681 if [ ${outer} -eq 4 ]; then 1549 if [ ${outer} -eq 4 ]; then
1682 # IPv4 h 1550 # IPv4 header
1683 exp_mtu=$((${ll_mtu} - 20)) 1551 exp_mtu=$((${ll_mtu} - 20))
1684 else 1552 else
1685 # IPv6 h 1553 # IPv6 header Option 4
1686 exp_mtu=$((${ll_mtu} - 40 1554 exp_mtu=$((${ll_mtu} - 40 - 8))
1687 fi 1555 fi
1688 1556
1689 # Create route exception by exceeding 1557 # Create route exception by exceeding link layer MTU
1690 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1558 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
1691 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1559 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
1692 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1560 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
1693 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1561 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
1694 1562
1695 mtu "${ns_a}" ip_a $((${ll_mtu} + 100 1563 mtu "${ns_a}" ip_a $((${ll_mtu} + 1000)) || return
1696 mtu "${ns_b}" ip_b $((${ll_mtu} + 100 1564 mtu "${ns_b}" ip_b $((${ll_mtu} + 1000)) || return
1697 run_cmd ${ns_a} ${ping} -q -M want -i 1565 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s $((${ll_mtu} + 500)) ${dst}
1698 1566
1699 # Check that exception was created 1567 # Check that exception was created
1700 pmtu="$(route_get_dst_pmtu_from_excep 1568 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst})"
1701 check_pmtu_value ${exp_mtu} "${pmtu}" 1569 check_pmtu_value ${exp_mtu} "${pmtu}" "exceeding link layer MTU on ip${inner}ip${outer} interface"
1702 } 1570 }
1703 1571
1704 test_pmtu_ipv4_ipv4_exception() { 1572 test_pmtu_ipv4_ipv4_exception() {
1705 test_pmtu_ipvX_over_ipvY_exception 4 1573 test_pmtu_ipvX_over_ipvY_exception 4 4
1706 } 1574 }
1707 1575
1708 test_pmtu_ipv6_ipv4_exception() { 1576 test_pmtu_ipv6_ipv4_exception() {
1709 test_pmtu_ipvX_over_ipvY_exception 6 1577 test_pmtu_ipvX_over_ipvY_exception 6 4
1710 } 1578 }
1711 1579
1712 test_pmtu_ipv4_ipv6_exception() { 1580 test_pmtu_ipv4_ipv6_exception() {
1713 test_pmtu_ipvX_over_ipvY_exception 4 1581 test_pmtu_ipvX_over_ipvY_exception 4 6
1714 } 1582 }
1715 1583
1716 test_pmtu_ipv6_ipv6_exception() { 1584 test_pmtu_ipv6_ipv6_exception() {
1717 test_pmtu_ipvX_over_ipvY_exception 6 1585 test_pmtu_ipvX_over_ipvY_exception 6 6
1718 } 1586 }
1719 1587
1720 test_pmtu_vti4_exception() { 1588 test_pmtu_vti4_exception() {
1721 setup namespaces veth vti4 xfrm4 || r 1589 setup namespaces veth vti4 xfrm4 || return $ksft_skip
1722 trace "${ns_a}" veth_a "${ns_b}" v 1590 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1723 "${ns_a}" vti4_a "${ns_b}" v 1591 "${ns_a}" vti4_a "${ns_b}" vti4_b
1724 1592
1725 veth_mtu=1500 1593 veth_mtu=1500
1726 vti_mtu=$((veth_mtu - 20)) 1594 vti_mtu=$((veth_mtu - 20))
1727 1595
1728 # SPI 1596 # SPI SN IV ICV pad length next header
1729 esp_payload_rfc4106=$((vti_mtu - 4 1597 esp_payload_rfc4106=$((vti_mtu - 4 - 4 - 8 - 16 - 1 - 1))
1730 ping_payload=$((esp_payload_rfc4106 - 1598 ping_payload=$((esp_payload_rfc4106 - 28))
1731 1599
1732 mtu "${ns_a}" veth_a ${veth_mtu} 1600 mtu "${ns_a}" veth_a ${veth_mtu}
1733 mtu "${ns_b}" veth_b ${veth_mtu} 1601 mtu "${ns_b}" veth_b ${veth_mtu}
1734 mtu "${ns_a}" vti4_a ${vti_mtu} 1602 mtu "${ns_a}" vti4_a ${vti_mtu}
1735 mtu "${ns_b}" vti4_b ${vti_mtu} 1603 mtu "${ns_b}" vti4_b ${vti_mtu}
1736 1604
1737 # Send DF packet without exceeding li 1605 # Send DF packet without exceeding link layer MTU, check that no
1738 # exception is created 1606 # exception is created
1739 run_cmd ${ns_a} ping -q -M want -i 0. 1607 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 1608 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1741 check_pmtu_value "" "${pmtu}" "sendin 1609 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1742 1610
1743 # Now exceed link layer MTU by one by 1611 # Now exceed link layer MTU by one byte, check that exception is created
1744 # with the right PMTU value 1612 # with the right PMTU value
1745 run_cmd ${ns_a} ping -q -M want -i 0. 1613 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 1614 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1747 check_pmtu_value "${esp_payload_rfc41 1615 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1748 } 1616 }
1749 1617
1750 test_pmtu_vti6_exception() { 1618 test_pmtu_vti6_exception() {
1751 setup namespaces veth vti6 xfrm6 || r 1619 setup namespaces veth vti6 xfrm6 || return $ksft_skip
1752 trace "${ns_a}" veth_a "${ns_b}" v 1620 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1753 "${ns_a}" vti6_a "${ns_b}" v 1621 "${ns_a}" vti6_a "${ns_b}" vti6_b
1754 fail=0 1622 fail=0
1755 1623
1756 # Create route exception by exceeding 1624 # Create route exception by exceeding link layer MTU
1757 mtu "${ns_a}" veth_a 4000 1625 mtu "${ns_a}" veth_a 4000
1758 mtu "${ns_b}" veth_b 4000 1626 mtu "${ns_b}" veth_b 4000
1759 mtu "${ns_a}" vti6_a 5000 1627 mtu "${ns_a}" vti6_a 5000
1760 mtu "${ns_b}" vti6_b 5000 1628 mtu "${ns_b}" vti6_b 5000
1761 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1629 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1762 1630
1763 # Check that exception was created 1631 # Check that exception was created
1764 pmtu="$(route_get_dst_pmtu_from_excep 1632 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1765 check_pmtu_value any "${pmtu}" "creat 1633 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1766 1634
1767 # Decrease tunnel MTU, check for PMTU 1635 # Decrease tunnel MTU, check for PMTU decrease in route exception
1768 mtu "${ns_a}" vti6_a 3000 1636 mtu "${ns_a}" vti6_a 3000
1769 pmtu="$(route_get_dst_pmtu_from_excep 1637 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1770 check_pmtu_value "3000" "${pmtu}" "de 1638 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1771 1639
1772 # Increase tunnel MTU, check for PMTU 1640 # Increase tunnel MTU, check for PMTU increase in route exception
1773 mtu "${ns_a}" vti6_a 9000 1641 mtu "${ns_a}" vti6_a 9000
1774 pmtu="$(route_get_dst_pmtu_from_excep 1642 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1775 check_pmtu_value "9000" "${pmtu}" "in 1643 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1776 1644
1777 return ${fail} 1645 return ${fail}
1778 } 1646 }
1779 1647
1780 test_pmtu_vti4_udp_exception() { 1648 test_pmtu_vti4_udp_exception() {
1781 setup namespaces veth vti4 xfrm4udp | 1649 setup namespaces veth vti4 xfrm4udp || return $ksft_skip
1782 trace "${ns_a}" veth_a "${ns_b}" v 1650 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1783 "${ns_a}" vti4_a "${ns_b}" v 1651 "${ns_a}" vti4_a "${ns_b}" vti4_b
1784 1652
1785 veth_mtu=1500 1653 veth_mtu=1500
1786 vti_mtu=$((veth_mtu - 20)) 1654 vti_mtu=$((veth_mtu - 20))
1787 1655
1788 # UDP 1656 # UDP SPI SN IV ICV pad length next header
1789 esp_payload_rfc4106=$((vti_mtu - 8 1657 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1790 ping_payload=$((esp_payload_rfc4106 - 1658 ping_payload=$((esp_payload_rfc4106 - 28))
1791 1659
1792 mtu "${ns_a}" veth_a ${veth_mtu} 1660 mtu "${ns_a}" veth_a ${veth_mtu}
1793 mtu "${ns_b}" veth_b ${veth_mtu} 1661 mtu "${ns_b}" veth_b ${veth_mtu}
1794 mtu "${ns_a}" vti4_a ${vti_mtu} 1662 mtu "${ns_a}" vti4_a ${vti_mtu}
1795 mtu "${ns_b}" vti4_b ${vti_mtu} 1663 mtu "${ns_b}" vti4_b ${vti_mtu}
1796 1664
1797 # Send DF packet without exceeding li 1665 # Send DF packet without exceeding link layer MTU, check that no
1798 # exception is created 1666 # exception is created
1799 run_cmd ${ns_a} ping -q -M want -i 0. 1667 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 1668 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1801 check_pmtu_value "" "${pmtu}" "sendin 1669 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1802 1670
1803 # Now exceed link layer MTU by one by 1671 # Now exceed link layer MTU by one byte, check that exception is created
1804 # with the right PMTU value 1672 # with the right PMTU value
1805 run_cmd ${ns_a} ping -q -M want -i 0. 1673 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 1674 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1807 check_pmtu_value "${esp_payload_rfc41 1675 check_pmtu_value "${esp_payload_rfc4106}" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106 + 1)))"
1808 } 1676 }
1809 1677
1810 test_pmtu_vti6_udp_exception() { 1678 test_pmtu_vti6_udp_exception() {
1811 setup namespaces veth vti6 xfrm6udp | 1679 setup namespaces veth vti6 xfrm6udp || return $ksft_skip
1812 trace "${ns_a}" veth_a "${ns_b}" v 1680 trace "${ns_a}" veth_a "${ns_b}" veth_b \
1813 "${ns_a}" vti6_a "${ns_b}" v 1681 "${ns_a}" vti6_a "${ns_b}" vti6_b
1814 fail=0 1682 fail=0
1815 1683
1816 # Create route exception by exceeding 1684 # Create route exception by exceeding link layer MTU
1817 mtu "${ns_a}" veth_a 4000 1685 mtu "${ns_a}" veth_a 4000
1818 mtu "${ns_b}" veth_b 4000 1686 mtu "${ns_b}" veth_b 4000
1819 mtu "${ns_a}" vti6_a 5000 1687 mtu "${ns_a}" vti6_a 5000
1820 mtu "${ns_b}" vti6_b 5000 1688 mtu "${ns_b}" vti6_b 5000
1821 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1689 run_cmd ${ns_a} ${ping6} -q -i 0.1 -w 1 -s 60000 ${tunnel6_b_addr}
1822 1690
1823 # Check that exception was created 1691 # Check that exception was created
1824 pmtu="$(route_get_dst_pmtu_from_excep 1692 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1825 check_pmtu_value any "${pmtu}" "creat 1693 check_pmtu_value any "${pmtu}" "creating tunnel exceeding link layer MTU" || return 1
1826 1694
1827 # Decrease tunnel MTU, check for PMTU 1695 # Decrease tunnel MTU, check for PMTU decrease in route exception
1828 mtu "${ns_a}" vti6_a 3000 1696 mtu "${ns_a}" vti6_a 3000
1829 pmtu="$(route_get_dst_pmtu_from_excep 1697 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1830 check_pmtu_value "3000" "${pmtu}" "de 1698 check_pmtu_value "3000" "${pmtu}" "decreasing tunnel MTU" || fail=1
1831 1699
1832 # Increase tunnel MTU, check for PMTU 1700 # Increase tunnel MTU, check for PMTU increase in route exception
1833 mtu "${ns_a}" vti6_a 9000 1701 mtu "${ns_a}" vti6_a 9000
1834 pmtu="$(route_get_dst_pmtu_from_excep 1702 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1835 check_pmtu_value "9000" "${pmtu}" "in 1703 check_pmtu_value "9000" "${pmtu}" "increasing tunnel MTU" || fail=1
1836 1704
1837 return ${fail} 1705 return ${fail}
1838 } 1706 }
1839 1707
1840 test_pmtu_vti4_udp_routed_exception() { 1708 test_pmtu_vti4_udp_routed_exception() {
1841 setup namespaces routing vti4routed x 1709 setup namespaces routing vti4routed xfrm4udprouted || return $ksft_skip
1842 trace "${ns_a}" veth_A-R1 "${ns_b} 1710 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1843 "${ns_a}" vti4_a "${ns_b} 1711 "${ns_a}" vti4_a "${ns_b}" vti4_b
1844 1712
1845 veth_mtu=1500 1713 veth_mtu=1500
1846 vti_mtu=$((veth_mtu - 20)) 1714 vti_mtu=$((veth_mtu - 20))
1847 1715
1848 # UDP 1716 # UDP SPI SN IV ICV pad length next header
1849 esp_payload_rfc4106=$((vti_mtu - 8 1717 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1850 ping_payload=$((esp_payload_rfc4106 - 1718 ping_payload=$((esp_payload_rfc4106 - 28))
1851 1719
1852 mtu "${ns_a}" veth_A-R1 ${veth_mtu} 1720 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1853 mtu "${ns_r1}" veth_R1-A ${veth_mtu} 1721 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1854 mtu "${ns_b}" veth_B-R1 ${veth_mtu} 1722 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1855 mtu "${ns_r1}" veth_R1-B ${veth_mtu} 1723 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1856 1724
1857 mtu "${ns_a}" vti4_a ${vti_mtu} 1725 mtu "${ns_a}" vti4_a ${vti_mtu}
1858 mtu "${ns_b}" vti4_b ${vti_mtu} 1726 mtu "${ns_b}" vti4_b ${vti_mtu}
1859 1727
1860 # Send DF packet without exceeding li 1728 # Send DF packet without exceeding link layer MTU, check that no
1861 # exception is created 1729 # exception is created
1862 run_cmd ${ns_a} ping -q -M want -i 0. 1730 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 1731 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1864 check_pmtu_value "" "${pmtu}" "sendin 1732 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1865 1733
1866 # Now decrease link layer MTU by 8 by 1734 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1867 # with the right PMTU value 1735 # with the right PMTU value
1868 mtu "${ns_r1}" veth_R1-B $((veth_mtu 1736 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1869 run_cmd ${ns_a} ping -q -M want -i 0. 1737 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 1738 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel4_b_addr})"
1871 check_pmtu_value "$((esp_payload_rfc4 1739 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1872 } 1740 }
1873 1741
1874 test_pmtu_vti6_udp_routed_exception() { 1742 test_pmtu_vti6_udp_routed_exception() {
1875 setup namespaces routing vti6routed x 1743 setup namespaces routing vti6routed xfrm6udprouted || return $ksft_skip
1876 trace "${ns_a}" veth_A-R1 "${ns_b} 1744 trace "${ns_a}" veth_A-R1 "${ns_b}" veth_B-R1 \
1877 "${ns_a}" vti6_a "${ns_b} 1745 "${ns_a}" vti6_a "${ns_b}" vti6_b
1878 1746
1879 veth_mtu=1500 1747 veth_mtu=1500
1880 vti_mtu=$((veth_mtu - 40)) 1748 vti_mtu=$((veth_mtu - 40))
1881 1749
1882 # UDP 1750 # UDP SPI SN IV ICV pad length next header
1883 esp_payload_rfc4106=$((vti_mtu - 8 1751 esp_payload_rfc4106=$((vti_mtu - 8 - 4 - 4 - 8 - 16 - 1 - 1))
1884 ping_payload=$((esp_payload_rfc4106 - 1752 ping_payload=$((esp_payload_rfc4106 - 48))
1885 1753
1886 mtu "${ns_a}" veth_A-R1 ${veth_mtu} 1754 mtu "${ns_a}" veth_A-R1 ${veth_mtu}
1887 mtu "${ns_r1}" veth_R1-A ${veth_mtu} 1755 mtu "${ns_r1}" veth_R1-A ${veth_mtu}
1888 mtu "${ns_b}" veth_B-R1 ${veth_mtu} 1756 mtu "${ns_b}" veth_B-R1 ${veth_mtu}
1889 mtu "${ns_r1}" veth_R1-B ${veth_mtu} 1757 mtu "${ns_r1}" veth_R1-B ${veth_mtu}
1890 1758
1891 # mtu "${ns_a}" vti6_a ${vti_mtu} 1759 # mtu "${ns_a}" vti6_a ${vti_mtu}
1892 # mtu "${ns_b}" vti6_b ${vti_mtu} 1760 # mtu "${ns_b}" vti6_b ${vti_mtu}
1893 1761
1894 run_cmd ${ns_a} ${ping6} -q -M want - 1762 run_cmd ${ns_a} ${ping6} -q -M want -i 0.1 -w 1 -s ${ping_payload} ${tunnel6_b_addr}
1895 1763
1896 # Check that exception was not create 1764 # Check that exception was not created
1897 pmtu="$(route_get_dst_pmtu_from_excep 1765 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1898 check_pmtu_value "" "${pmtu}" "sendin 1766 check_pmtu_value "" "${pmtu}" "sending packet smaller than PMTU (IP payload length ${esp_payload_rfc4106})" || return 1
1899 1767
1900 # Now decrease link layer MTU by 8 by 1768 # Now decrease link layer MTU by 8 bytes on R1, check that exception is created
1901 # with the right PMTU value 1769 # with the right PMTU value
1902 mtu "${ns_r1}" veth_R1-B $((veth_mtu 1770 mtu "${ns_r1}" veth_R1-B $((veth_mtu - 8))
1903 run_cmd ${ns_a} ${ping6} -q -M want - 1771 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 1772 pmtu="$(route_get_dst_pmtu_from_exception "${ns_a}" ${tunnel6_b_addr})"
1905 check_pmtu_value "$((esp_payload_rfc4 1773 check_pmtu_value "$((esp_payload_rfc4106 - 8))" "${pmtu}" "exceeding PMTU (IP payload length $((esp_payload_rfc4106)))"
1906 1774
1907 } 1775 }
1908 1776
1909 test_pmtu_vti4_default_mtu() { 1777 test_pmtu_vti4_default_mtu() {
1910 setup namespaces veth vti4 || return 1778 setup namespaces veth vti4 || return $ksft_skip
1911 1779
1912 # Check that MTU of vti device is MTU 1780 # Check that MTU of vti device is MTU of veth minus IPv4 header length
1913 veth_mtu="$(link_get_mtu "${ns_a}" ve 1781 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1914 vti4_mtu="$(link_get_mtu "${ns_a}" vt 1782 vti4_mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1915 if [ $((veth_mtu - vti4_mtu)) -ne 20 1783 if [ $((veth_mtu - vti4_mtu)) -ne 20 ]; then
1916 err " vti MTU ${vti4_mtu} is 1784 err " vti MTU ${vti4_mtu} is not veth MTU ${veth_mtu} minus IPv4 header length"
1917 return 1 1785 return 1
1918 fi 1786 fi
1919 } 1787 }
1920 1788
1921 test_pmtu_vti6_default_mtu() { 1789 test_pmtu_vti6_default_mtu() {
1922 setup namespaces veth vti6 || return 1790 setup namespaces veth vti6 || return $ksft_skip
1923 1791
1924 # Check that MTU of vti device is MTU 1792 # Check that MTU of vti device is MTU of veth minus IPv6 header length
1925 veth_mtu="$(link_get_mtu "${ns_a}" ve 1793 veth_mtu="$(link_get_mtu "${ns_a}" veth_a)"
1926 vti6_mtu="$(link_get_mtu "${ns_a}" vt 1794 vti6_mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1927 if [ $((veth_mtu - vti6_mtu)) -ne 40 1795 if [ $((veth_mtu - vti6_mtu)) -ne 40 ]; then
1928 err " vti MTU ${vti6_mtu} is 1796 err " vti MTU ${vti6_mtu} is not veth MTU ${veth_mtu} minus IPv6 header length"
1929 return 1 1797 return 1
1930 fi 1798 fi
1931 } 1799 }
1932 1800
1933 test_pmtu_vti4_link_add_mtu() { 1801 test_pmtu_vti4_link_add_mtu() {
1934 setup namespaces || return $ksft_skip 1802 setup namespaces || return $ksft_skip
1935 1803
1936 run_cmd ${ns_a} ip link add vti4_a ty 1804 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 1805 [ $? -ne 0 ] && err " vti not supported" && return $ksft_skip
1938 run_cmd ${ns_a} ip link del vti4_a 1806 run_cmd ${ns_a} ip link del vti4_a
1939 1807
1940 fail=0 1808 fail=0
1941 1809
1942 min=68 1810 min=68
1943 max=$((65535 - 20)) 1811 max=$((65535 - 20))
1944 # Check invalid values first 1812 # Check invalid values first
1945 for v in $((min - 1)) $((max + 1)); d 1813 for v in $((min - 1)) $((max + 1)); do
1946 run_cmd ${ns_a} ip link add v 1814 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 1815 # This can fail, or MTU can be adjusted to a proper value
1948 [ $? -ne 0 ] && continue 1816 [ $? -ne 0 ] && continue
1949 mtu="$(link_get_mtu "${ns_a}" 1817 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1950 if [ ${mtu} -lt ${min} -o ${m 1818 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1951 err " vti tunnel cre 1819 err " vti tunnel created with invalid MTU ${mtu}"
1952 fail=1 1820 fail=1
1953 fi 1821 fi
1954 run_cmd ${ns_a} ip link del v 1822 run_cmd ${ns_a} ip link del vti4_a
1955 done 1823 done
1956 1824
1957 # Now check valid values 1825 # Now check valid values
1958 for v in ${min} 1300 ${max}; do 1826 for v in ${min} 1300 ${max}; do
1959 run_cmd ${ns_a} ip link add v 1827 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 "${ns_a}" 1828 mtu="$(link_get_mtu "${ns_a}" vti4_a)"
1961 run_cmd ${ns_a} ip link del v 1829 run_cmd ${ns_a} ip link del vti4_a
1962 if [ "${mtu}" != "${v}" ]; th 1830 if [ "${mtu}" != "${v}" ]; then
1963 err " vti MTU ${mtu} 1831 err " vti MTU ${mtu} doesn't match configured value ${v}"
1964 fail=1 1832 fail=1
1965 fi 1833 fi
1966 done 1834 done
1967 1835
1968 return ${fail} 1836 return ${fail}
1969 } 1837 }
1970 1838
1971 test_pmtu_vti6_link_add_mtu() { 1839 test_pmtu_vti6_link_add_mtu() {
1972 setup namespaces || return $ksft_skip 1840 setup namespaces || return $ksft_skip
1973 1841
1974 run_cmd ${ns_a} ip link add vti6_a ty 1842 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 1843 [ $? -ne 0 ] && err " vti6 not supported" && return $ksft_skip
1976 run_cmd ${ns_a} ip link del vti6_a 1844 run_cmd ${ns_a} ip link del vti6_a
1977 1845
1978 fail=0 1846 fail=0
1979 1847
1980 min=68 # vti6 can ca 1848 min=68 # vti6 can carry IPv4 packets too
1981 max=$((65535 - 40)) 1849 max=$((65535 - 40))
1982 # Check invalid values first 1850 # Check invalid values first
1983 for v in $((min - 1)) $((max + 1)); d 1851 for v in $((min - 1)) $((max + 1)); do
1984 run_cmd ${ns_a} ip link add v 1852 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 1853 # This can fail, or MTU can be adjusted to a proper value
1986 [ $? -ne 0 ] && continue 1854 [ $? -ne 0 ] && continue
1987 mtu="$(link_get_mtu "${ns_a}" 1855 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1988 if [ ${mtu} -lt ${min} -o ${m 1856 if [ ${mtu} -lt ${min} -o ${mtu} -gt ${max} ]; then
1989 err " vti6 tunnel cr 1857 err " vti6 tunnel created with invalid MTU ${v}"
1990 fail=1 1858 fail=1
1991 fi 1859 fi
1992 run_cmd ${ns_a} ip link del v 1860 run_cmd ${ns_a} ip link del vti6_a
1993 done 1861 done
1994 1862
1995 # Now check valid values 1863 # Now check valid values
1996 for v in 68 1280 1300 $((65535 - 40)) 1864 for v in 68 1280 1300 $((65535 - 40)); do
1997 run_cmd ${ns_a} ip link add v 1865 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 "${ns_a}" 1866 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
1999 run_cmd ${ns_a} ip link del v 1867 run_cmd ${ns_a} ip link del vti6_a
2000 if [ "${mtu}" != "${v}" ]; th 1868 if [ "${mtu}" != "${v}" ]; then
2001 err " vti6 MTU ${mtu 1869 err " vti6 MTU ${mtu} doesn't match configured value ${v}"
2002 fail=1 1870 fail=1
2003 fi 1871 fi
2004 done 1872 done
2005 1873
2006 return ${fail} 1874 return ${fail}
2007 } 1875 }
2008 1876
2009 test_pmtu_vti6_link_change_mtu() { 1877 test_pmtu_vti6_link_change_mtu() {
2010 setup namespaces || return $ksft_skip 1878 setup namespaces || return $ksft_skip
2011 1879
2012 run_cmd ${ns_a} ip link add dummy0 mt 1880 run_cmd ${ns_a} ip link add dummy0 mtu 1500 type dummy
2013 [ $? -ne 0 ] && err " dummy not supp 1881 [ $? -ne 0 ] && err " dummy not supported" && return $ksft_skip
2014 run_cmd ${ns_a} ip link add dummy1 mt 1882 run_cmd ${ns_a} ip link add dummy1 mtu 3000 type dummy
2015 run_cmd ${ns_a} ip link set dummy0 up 1883 run_cmd ${ns_a} ip link set dummy0 up
2016 run_cmd ${ns_a} ip link set dummy1 up 1884 run_cmd ${ns_a} ip link set dummy1 up
2017 1885
2018 run_cmd ${ns_a} ip addr add ${dummy6_ 1886 run_cmd ${ns_a} ip addr add ${dummy6_0_prefix}1/${dummy6_mask} dev dummy0
2019 run_cmd ${ns_a} ip addr add ${dummy6_ 1887 run_cmd ${ns_a} ip addr add ${dummy6_1_prefix}1/${dummy6_mask} dev dummy1
2020 1888
2021 fail=0 1889 fail=0
2022 1890
2023 # Create vti6 interface bound to devi 1891 # Create vti6 interface bound to device, passing MTU, check it
2024 run_cmd ${ns_a} ip link add vti6_a mt 1892 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 "${ns_a}" vti6_a) 1893 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2026 if [ ${mtu} -ne 1300 ]; then 1894 if [ ${mtu} -ne 1300 ]; then
2027 err " vti6 MTU ${mtu} doesn' 1895 err " vti6 MTU ${mtu} doesn't match configured value 1300"
2028 fail=1 1896 fail=1
2029 fi 1897 fi
2030 1898
2031 # Move to another device with differe 1899 # Move to another device with different MTU, without passing MTU, check
2032 # MTU is adjusted 1900 # MTU is adjusted
2033 run_cmd ${ns_a} ip link set vti6_a ty 1901 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 "${ns_a}" vti6_a) 1902 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2035 if [ ${mtu} -ne $((3000 - 40)) ]; the 1903 if [ ${mtu} -ne $((3000 - 40)) ]; then
2036 err " vti MTU ${mtu} is not 1904 err " vti MTU ${mtu} is not dummy MTU 3000 minus IPv6 header length"
2037 fail=1 1905 fail=1
2038 fi 1906 fi
2039 1907
2040 # Move it back, passing MTU, check MT 1908 # Move it back, passing MTU, check MTU is not overridden
2041 run_cmd ${ns_a} ip link set vti6_a mt 1909 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 "${ns_a}" vti6_a) 1910 mtu="$(link_get_mtu "${ns_a}" vti6_a)"
2043 if [ ${mtu} -ne 1280 ]; then 1911 if [ ${mtu} -ne 1280 ]; then
2044 err " vti6 MTU ${mtu} doesn' 1912 err " vti6 MTU ${mtu} doesn't match configured value 1280"
2045 fail=1 1913 fail=1
2046 fi 1914 fi
2047 1915
2048 return ${fail} 1916 return ${fail}
2049 } 1917 }
2050 1918
2051 check_command() { 1919 check_command() {
2052 cmd=${1} 1920 cmd=${1}
2053 1921
2054 if ! which ${cmd} > /dev/null 2>&1; t 1922 if ! which ${cmd} > /dev/null 2>&1; then
2055 err " missing required comma 1923 err " missing required command: '${cmd}'"
2056 return 1 1924 return 1
2057 fi 1925 fi
2058 return 0 1926 return 0
2059 } 1927 }
2060 1928
2061 check_running() { <<
2062 pid=${1} <<
2063 cmd=${2} <<
2064 <<
2065 [ "$(cat /proc/${pid}/cmdline 2>/dev/ <<
2066 } <<
2067 <<
2068 test_cleanup_vxlanX_exception() { 1929 test_cleanup_vxlanX_exception() {
2069 outer="${1}" 1930 outer="${1}"
2070 encap="vxlan" 1931 encap="vxlan"
2071 ll_mtu=4000 1932 ll_mtu=4000
2072 1933
2073 check_command taskset || return $ksft 1934 check_command taskset || return $ksft_skip
2074 cpu_list=$(grep -m 2 processor /proc/ 1935 cpu_list=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2)
2075 1936
2076 setup namespaces routing ${encap}${ou 1937 setup namespaces routing ${encap}${outer} || return $ksft_skip
2077 trace "${ns_a}" ${encap}_a "${ns_b} 1938 trace "${ns_a}" ${encap}_a "${ns_b}" ${encap}_b \
2078 "${ns_a}" veth_A-R1 "${ns_r1 1939 "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2079 "${ns_b}" veth_B-R1 "${ns_r1 1940 "${ns_b}" veth_B-R1 "${ns_r1}" veth_R1-B
2080 1941
2081 # Create route exception by exceeding 1942 # Create route exception by exceeding link layer MTU
2082 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} 1943 mtu "${ns_a}" veth_A-R1 $((${ll_mtu} + 1000))
2083 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} 1944 mtu "${ns_r1}" veth_R1-A $((${ll_mtu} + 1000))
2084 mtu "${ns_b}" veth_B-R1 ${ll_mtu} 1945 mtu "${ns_b}" veth_B-R1 ${ll_mtu}
2085 mtu "${ns_r1}" veth_R1-B ${ll_mtu} 1946 mtu "${ns_r1}" veth_R1-B ${ll_mtu}
2086 1947
2087 mtu "${ns_a}" ${encap}_a $((${ll_mtu} 1948 mtu "${ns_a}" ${encap}_a $((${ll_mtu} + 1000))
2088 mtu "${ns_b}" ${encap}_b $((${ll_mtu} 1949 mtu "${ns_b}" ${encap}_b $((${ll_mtu} + 1000))
2089 1950
2090 # Fill exception cache for multiple C 1951 # Fill exception cache for multiple CPUs (2)
2091 # we can always use inner IPv4 for th 1952 # we can always use inner IPv4 for that
2092 for cpu in ${cpu_list}; do 1953 for cpu in ${cpu_list}; do
2093 run_cmd taskset --cpu-list ${ 1954 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 1955 done
2095 1956
2096 ${ns_a} ip link del dev veth_A-R1 & 1957 ${ns_a} ip link del dev veth_A-R1 &
2097 iplink_pid=$! 1958 iplink_pid=$!
2098 for i in $(seq 1 20); do !! 1959 sleep 1
2099 check_running ${iplink_pid} " !! 1960 if [ "$(cat /proc/${iplink_pid}/cmdline 2>/dev/null | tr -d '\0')" = "iplinkdeldevveth_A-R1" ]; then
2100 sleep 0.1 !! 1961 err " can't delete veth device in a timely manner, PMTU dst likely leaked"
2101 done !! 1962 return 1
2102 err " can't delete veth device in a !! 1963 fi
2103 return 1 <<
2104 } 1964 }
2105 1965
2106 test_cleanup_ipv6_exception() { 1966 test_cleanup_ipv6_exception() {
2107 test_cleanup_vxlanX_exception 6 1967 test_cleanup_vxlanX_exception 6
2108 } 1968 }
2109 1969
2110 test_cleanup_ipv4_exception() { 1970 test_cleanup_ipv4_exception() {
2111 test_cleanup_vxlanX_exception 4 1971 test_cleanup_vxlanX_exception 4
2112 } 1972 }
2113 1973
2114 run_test() { 1974 run_test() {
2115 ( 1975 (
2116 tname="$1" 1976 tname="$1"
2117 tdesc="$2" 1977 tdesc="$2"
2118 1978
2119 unset IFS 1979 unset IFS
2120 1980
2121 # Since cleanup() relies on variables 1981 # Since cleanup() relies on variables modified by this subshell, it
2122 # has to run in this context. 1982 # has to run in this context.
2123 trap cleanup EXIT 1983 trap cleanup EXIT
2124 1984
2125 if [ "$VERBOSE" = "1" ]; then 1985 if [ "$VERBOSE" = "1" ]; then
2126 printf "\n################### 1986 printf "\n##########################################################################\n\n"
2127 fi 1987 fi
2128 1988
2129 eval test_${tname} 1989 eval test_${tname}
2130 ret=$? 1990 ret=$?
2131 1991
2132 if [ $ret -eq 0 ]; then 1992 if [ $ret -eq 0 ]; then
2133 printf "TEST: %-60s [ OK ]\n 1993 printf "TEST: %-60s [ OK ]\n" "${tdesc}"
2134 elif [ $ret -eq 1 ]; then 1994 elif [ $ret -eq 1 ]; then
2135 printf "TEST: %-60s [FAIL]\n 1995 printf "TEST: %-60s [FAIL]\n" "${tdesc}"
2136 if [ "${PAUSE_ON_FAIL}" = "ye 1996 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
2137 echo 1997 echo
2138 echo "Pausing. Hit en 1998 echo "Pausing. Hit enter to continue"
2139 read a 1999 read a
2140 fi 2000 fi
2141 err_flush 2001 err_flush
2142 exit 1 2002 exit 1
2143 elif [ $ret -eq $ksft_skip ]; then 2003 elif [ $ret -eq $ksft_skip ]; then
2144 printf "TEST: %-60s [SKIP]\n 2004 printf "TEST: %-60s [SKIP]\n" "${tdesc}"
2145 err_flush 2005 err_flush
2146 fi 2006 fi
2147 2007
2148 return $ret 2008 return $ret
2149 ) 2009 )
2150 ret=$? 2010 ret=$?
2151 case $ret in 2011 case $ret in
2152 0) 2012 0)
2153 all_skipped=false 2013 all_skipped=false
2154 [ $exitcode -eq $ksft !! 2014 [ $exitcode=$ksft_skip ] && exitcode=0
2155 ;; 2015 ;;
2156 $ksft_skip) 2016 $ksft_skip)
2157 [ $all_skipped = true 2017 [ $all_skipped = true ] && exitcode=$ksft_skip
2158 ;; 2018 ;;
2159 *) 2019 *)
2160 all_skipped=false 2020 all_skipped=false
2161 exitcode=1 2021 exitcode=1
2162 ;; 2022 ;;
2163 esac 2023 esac
2164 2024
2165 return $ret 2025 return $ret
2166 } 2026 }
2167 2027
2168 run_test_nh() { 2028 run_test_nh() {
2169 tname="$1" 2029 tname="$1"
2170 tdesc="$2" 2030 tdesc="$2"
2171 2031
2172 USE_NH=yes 2032 USE_NH=yes
2173 run_test "${tname}" "${tdesc} - nexth 2033 run_test "${tname}" "${tdesc} - nexthop objects"
2174 USE_NH=no 2034 USE_NH=no
2175 } 2035 }
2176 2036
2177 test_list_flush_ipv4_exception() { 2037 test_list_flush_ipv4_exception() {
2178 setup namespaces routing || return $k 2038 setup namespaces routing || return $ksft_skip
2179 trace "${ns_a}" veth_A-R1 "${ns_r 2039 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2180 "${ns_r1}" veth_R1-B "${ns_b 2040 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2181 "${ns_a}" veth_A-R2 "${ns_r 2041 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2182 "${ns_r2}" veth_R2-B "${ns_b 2042 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2183 2043
2184 dst_prefix1="${prefix4}.${b_r1}." 2044 dst_prefix1="${prefix4}.${b_r1}."
2185 dst2="${prefix4}.${b_r2}.1" 2045 dst2="${prefix4}.${b_r2}.1"
2186 2046
2187 # Set up initial MTU values 2047 # Set up initial MTU values
2188 mtu "${ns_a}" veth_A-R1 2000 2048 mtu "${ns_a}" veth_A-R1 2000
2189 mtu "${ns_r1}" veth_R1-A 2000 2049 mtu "${ns_r1}" veth_R1-A 2000
2190 mtu "${ns_r1}" veth_R1-B 1500 2050 mtu "${ns_r1}" veth_R1-B 1500
2191 mtu "${ns_b}" veth_B-R1 1500 2051 mtu "${ns_b}" veth_B-R1 1500
2192 2052
2193 mtu "${ns_a}" veth_A-R2 2000 2053 mtu "${ns_a}" veth_A-R2 2000
2194 mtu "${ns_r2}" veth_R2-A 2000 2054 mtu "${ns_r2}" veth_R2-A 2000
2195 mtu "${ns_r2}" veth_R2-B 1500 2055 mtu "${ns_r2}" veth_R2-B 1500
2196 mtu "${ns_b}" veth_B-R2 1500 2056 mtu "${ns_b}" veth_B-R2 1500
2197 2057
2198 fail=0 2058 fail=0
2199 2059
2200 # Add 100 addresses for veth endpoint 2060 # Add 100 addresses for veth endpoint on B reached by default A route
2201 for i in $(seq 100 199); do 2061 for i in $(seq 100 199); do
2202 run_cmd ${ns_b} ip addr add " 2062 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2203 done 2063 done
2204 2064
2205 # Create 100 cached route exceptions 2065 # Create 100 cached route exceptions for path via R1, one via R2. Note
2206 # that with IPv4 we need to actually 2066 # that with IPv4 we need to actually cause a route lookup that matches
2207 # the exception caused by ICMP, in or 2067 # the exception caused by ICMP, in order to actually have a cached
2208 # route, so we need to ping each dest 2068 # route, so we need to ping each destination twice
2209 for i in $(seq 100 199); do 2069 for i in $(seq 100 199); do
2210 run_cmd ${ns_a} ping -q -M wa 2070 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst_prefix1}${i}"
2211 done 2071 done
2212 run_cmd ${ns_a} ping -q -M want -i 0. 2072 run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}"
2213 2073
2214 if [ "$(${ns_a} ip -oneline route lis 2074 if [ "$(${ns_a} ip -oneline route list cache | wc -l)" -ne 101 ]; then
2215 err " can't list cached exce 2075 err " can't list cached exceptions"
2216 fail=1 2076 fail=1
2217 fi 2077 fi
2218 2078
2219 run_cmd ${ns_a} ip route flush cache 2079 run_cmd ${ns_a} ip route flush cache
2220 pmtu1="$(route_get_dst_pmtu_from_exce 2080 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}1)"
2221 pmtu2="$(route_get_dst_pmtu_from_exce 2081 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst_prefix}2)"
2222 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 2082 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2223 [ -n "$(${ns_a} ip route list cach 2083 [ -n "$(${ns_a} ip route list cache)" ]; then
2224 err " can't flush cached exc 2084 err " can't flush cached exceptions"
2225 fail=1 2085 fail=1
2226 fi 2086 fi
2227 2087
2228 return ${fail} 2088 return ${fail}
2229 } 2089 }
2230 2090
2231 test_list_flush_ipv6_exception() { 2091 test_list_flush_ipv6_exception() {
2232 setup namespaces routing || return $k 2092 setup namespaces routing || return $ksft_skip
2233 trace "${ns_a}" veth_A-R1 "${ns_r 2093 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2234 "${ns_r1}" veth_R1-B "${ns_b 2094 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2235 "${ns_a}" veth_A-R2 "${ns_r 2095 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2236 "${ns_r2}" veth_R2-B "${ns_b 2096 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2237 2097
2238 dst_prefix1="${prefix6}:${b_r1}::" 2098 dst_prefix1="${prefix6}:${b_r1}::"
2239 dst2="${prefix6}:${b_r2}::1" 2099 dst2="${prefix6}:${b_r2}::1"
2240 2100
2241 # Set up initial MTU values 2101 # Set up initial MTU values
2242 mtu "${ns_a}" veth_A-R1 2000 2102 mtu "${ns_a}" veth_A-R1 2000
2243 mtu "${ns_r1}" veth_R1-A 2000 2103 mtu "${ns_r1}" veth_R1-A 2000
2244 mtu "${ns_r1}" veth_R1-B 1500 2104 mtu "${ns_r1}" veth_R1-B 1500
2245 mtu "${ns_b}" veth_B-R1 1500 2105 mtu "${ns_b}" veth_B-R1 1500
2246 2106
2247 mtu "${ns_a}" veth_A-R2 2000 2107 mtu "${ns_a}" veth_A-R2 2000
2248 mtu "${ns_r2}" veth_R2-A 2000 2108 mtu "${ns_r2}" veth_R2-A 2000
2249 mtu "${ns_r2}" veth_R2-B 1500 2109 mtu "${ns_r2}" veth_R2-B 1500
2250 mtu "${ns_b}" veth_B-R2 1500 2110 mtu "${ns_b}" veth_B-R2 1500
2251 2111
2252 fail=0 2112 fail=0
2253 2113
2254 # Add 100 addresses for veth endpoint 2114 # Add 100 addresses for veth endpoint on B reached by default A route
2255 for i in $(seq 100 199); do 2115 for i in $(seq 100 199); do
2256 run_cmd ${ns_b} ip addr add " 2116 run_cmd ${ns_b} ip addr add "${dst_prefix1}${i}" dev veth_B-R1
2257 done 2117 done
2258 2118
2259 # Create 100 cached route exceptions 2119 # Create 100 cached route exceptions for path via R1, one via R2
2260 for i in $(seq 100 199); do 2120 for i in $(seq 100 199); do
2261 run_cmd ${ns_a} ping -q -M wa 2121 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}"
2262 done 2122 done
2263 run_cmd ${ns_a} ping -q -M want -i 0. 2123 run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}"
2264 if [ "$(${ns_a} ip -oneline -6 route 2124 if [ "$(${ns_a} ip -oneline -6 route list cache | wc -l)" -ne 101 ]; then
2265 err " can't list cached exce 2125 err " can't list cached exceptions"
2266 fail=1 2126 fail=1
2267 fi 2127 fi
2268 2128
2269 run_cmd ${ns_a} ip -6 route flush cac 2129 run_cmd ${ns_a} ip -6 route flush cache
2270 pmtu1="$(route_get_dst_pmtu_from_exce 2130 pmtu1="$(route_get_dst_pmtu_from_exception "${ns_a}" "${dst_prefix1}100")"
2271 pmtu2="$(route_get_dst_pmtu_from_exce 2131 pmtu2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2272 if [ -n "${pmtu1}" ] || [ -n "${pmtu2 2132 if [ -n "${pmtu1}" ] || [ -n "${pmtu2}" ] || \
2273 [ -n "$(${ns_a} ip -6 route list c 2133 [ -n "$(${ns_a} ip -6 route list cache)" ]; then
2274 err " can't flush cached exc 2134 err " can't flush cached exceptions"
2275 fail=1 2135 fail=1
2276 fi 2136 fi
2277 2137
2278 return ${fail} 2138 return ${fail}
2279 } 2139 }
2280 2140
2281 test_pmtu_ipvX_route_change() { 2141 test_pmtu_ipvX_route_change() {
2282 family=${1} 2142 family=${1}
2283 2143
2284 setup namespaces routing || return 2 2144 setup namespaces routing || return 2
2285 trace "${ns_a}" veth_A-R1 "${ns_r 2145 trace "${ns_a}" veth_A-R1 "${ns_r1}" veth_R1-A \
2286 "${ns_r1}" veth_R1-B "${ns_b 2146 "${ns_r1}" veth_R1-B "${ns_b}" veth_B-R1 \
2287 "${ns_a}" veth_A-R2 "${ns_r 2147 "${ns_a}" veth_A-R2 "${ns_r2}" veth_R2-A \
2288 "${ns_r2}" veth_R2-B "${ns_b 2148 "${ns_r2}" veth_R2-B "${ns_b}" veth_B-R2
2289 2149
2290 if [ ${family} -eq 4 ]; then 2150 if [ ${family} -eq 4 ]; then
2291 ping=ping 2151 ping=ping
2292 dst1="${prefix4}.${b_r1}.1" 2152 dst1="${prefix4}.${b_r1}.1"
2293 dst2="${prefix4}.${b_r2}.1" 2153 dst2="${prefix4}.${b_r2}.1"
2294 gw="${prefix4}.${a_r1}.2" 2154 gw="${prefix4}.${a_r1}.2"
2295 else 2155 else
2296 ping=${ping6} 2156 ping=${ping6}
2297 dst1="${prefix6}:${b_r1}::1" 2157 dst1="${prefix6}:${b_r1}::1"
2298 dst2="${prefix6}:${b_r2}::1" 2158 dst2="${prefix6}:${b_r2}::1"
2299 gw="${prefix6}:${a_r1}::2" 2159 gw="${prefix6}:${a_r1}::2"
2300 fi 2160 fi
2301 2161
2302 # Set up initial MTU values 2162 # Set up initial MTU values
2303 mtu "${ns_a}" veth_A-R1 2000 2163 mtu "${ns_a}" veth_A-R1 2000
2304 mtu "${ns_r1}" veth_R1-A 2000 2164 mtu "${ns_r1}" veth_R1-A 2000
2305 mtu "${ns_r1}" veth_R1-B 1400 2165 mtu "${ns_r1}" veth_R1-B 1400
2306 mtu "${ns_b}" veth_B-R1 1400 2166 mtu "${ns_b}" veth_B-R1 1400
2307 2167
2308 mtu "${ns_a}" veth_A-R2 2000 2168 mtu "${ns_a}" veth_A-R2 2000
2309 mtu "${ns_r2}" veth_R2-A 2000 2169 mtu "${ns_r2}" veth_R2-A 2000
2310 mtu "${ns_r2}" veth_R2-B 1500 2170 mtu "${ns_r2}" veth_R2-B 1500
2311 mtu "${ns_b}" veth_B-R2 1500 2171 mtu "${ns_b}" veth_B-R2 1500
2312 2172
2313 # Create route exceptions 2173 # Create route exceptions
2314 run_cmd ${ns_a} ${ping} -q -M want -i 2174 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 2175 run_cmd ${ns_a} ${ping} -q -M want -i 0.1 -w 1 -s 1800 ${dst2}
2316 2176
2317 # Check that exceptions have been cre 2177 # Check that exceptions have been created with the correct PMTU
2318 pmtu_1="$(route_get_dst_pmtu_from_exc 2178 pmtu_1="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst1})"
2319 check_pmtu_value "1400" "${pmtu_1}" " 2179 check_pmtu_value "1400" "${pmtu_1}" "exceeding MTU" || return 1
2320 pmtu_2="$(route_get_dst_pmtu_from_exc 2180 pmtu_2="$(route_get_dst_pmtu_from_exception "${ns_a}" ${dst2})"
2321 check_pmtu_value "1500" "${pmtu_2}" " 2181 check_pmtu_value "1500" "${pmtu_2}" "exceeding MTU" || return 1
2322 2182
2323 # Replace the route from A to R1 2183 # Replace the route from A to R1
2324 run_cmd ${ns_a} ip route change defau 2184 run_cmd ${ns_a} ip route change default via ${gw}
2325 2185
2326 # Delete the device in A 2186 # Delete the device in A
2327 run_cmd ${ns_a} ip link del "veth_A-R 2187 run_cmd ${ns_a} ip link del "veth_A-R1"
2328 } 2188 }
2329 2189
2330 test_pmtu_ipv4_route_change() { 2190 test_pmtu_ipv4_route_change() {
2331 test_pmtu_ipvX_route_change 4 2191 test_pmtu_ipvX_route_change 4
2332 } 2192 }
2333 2193
2334 test_pmtu_ipv6_route_change() { 2194 test_pmtu_ipv6_route_change() {
2335 test_pmtu_ipvX_route_change 6 2195 test_pmtu_ipvX_route_change 6
2336 } 2196 }
2337 2197
2338 usage() { 2198 usage() {
2339 echo 2199 echo
2340 echo "$0 [OPTIONS] [TEST]..." 2200 echo "$0 [OPTIONS] [TEST]..."
2341 echo "If no TEST argument is given, a 2201 echo "If no TEST argument is given, all tests will be run."
2342 echo 2202 echo
2343 echo "Options" 2203 echo "Options"
2344 echo " --trace: capture traffic to T 2204 echo " --trace: capture traffic to TEST_INTERFACE.pcap"
2345 echo 2205 echo
2346 echo "Available tests${tests}" 2206 echo "Available tests${tests}"
2347 exit 1 2207 exit 1
2348 } 2208 }
2349 2209
2350 ############################################# 2210 ################################################################################
2351 # 2211 #
2352 exitcode=0 2212 exitcode=0
2353 desc=0 2213 desc=0
2354 all_skipped=true 2214 all_skipped=true
2355 2215
2356 while getopts :ptv o 2216 while getopts :ptv o
2357 do 2217 do
2358 case $o in 2218 case $o in
2359 p) PAUSE_ON_FAIL=yes;; 2219 p) PAUSE_ON_FAIL=yes;;
2360 v) VERBOSE=1;; 2220 v) VERBOSE=1;;
2361 t) if which tcpdump > /dev/null 2>&1; 2221 t) if which tcpdump > /dev/null 2>&1; then
2362 TRACING=1 2222 TRACING=1
2363 else 2223 else
2364 echo "=== tcpdump not availab 2224 echo "=== tcpdump not available, tracing disabled"
2365 fi 2225 fi
2366 ;; 2226 ;;
2367 *) usage;; 2227 *) usage;;
2368 esac 2228 esac
2369 done 2229 done
2370 shift $(($OPTIND-1)) 2230 shift $(($OPTIND-1))
2371 2231
2372 IFS=" 2232 IFS="
2373 " 2233 "
2374 2234
2375 for arg do 2235 for arg do
2376 # Check first that all requested test 2236 # Check first that all requested tests are available before running any
2377 command -v > /dev/null "test_${arg}" 2237 command -v > /dev/null "test_${arg}" || { echo "=== Test ${arg} not found"; usage; }
2378 done 2238 done
2379 2239
2380 trap cleanup EXIT 2240 trap cleanup EXIT
2381 2241
2382 # start clean 2242 # start clean
2383 cleanup 2243 cleanup
2384 2244
2385 HAVE_NH=no 2245 HAVE_NH=no
2386 ip nexthop ls >/dev/null 2>&1 2246 ip nexthop ls >/dev/null 2>&1
2387 [ $? -eq 0 ] && HAVE_NH=yes 2247 [ $? -eq 0 ] && HAVE_NH=yes
2388 2248
2389 name="" 2249 name=""
2390 desc="" 2250 desc=""
2391 rerun_nh=0 2251 rerun_nh=0
2392 for t in ${tests}; do 2252 for t in ${tests}; do
2393 [ "${name}" = "" ] && name="${t} 2253 [ "${name}" = "" ] && name="${t}" && continue
2394 [ "${desc}" = "" ] && desc="${t} 2254 [ "${desc}" = "" ] && desc="${t}" && continue
2395 2255
2396 if [ "${HAVE_NH}" = "yes" ]; then 2256 if [ "${HAVE_NH}" = "yes" ]; then
2397 rerun_nh="${t}" 2257 rerun_nh="${t}"
2398 fi 2258 fi
2399 2259
2400 run_this=1 2260 run_this=1
2401 for arg do 2261 for arg do
2402 [ "${arg}" != "${arg#--*}" ] 2262 [ "${arg}" != "${arg#--*}" ] && continue
2403 [ "${arg}" = "${name}" ] && r 2263 [ "${arg}" = "${name}" ] && run_this=1 && break
2404 run_this=0 2264 run_this=0
2405 done 2265 done
2406 if [ $run_this -eq 1 ]; then 2266 if [ $run_this -eq 1 ]; then
2407 run_test "${name}" "${desc}" 2267 run_test "${name}" "${desc}"
2408 # if test was skipped no need 2268 # if test was skipped no need to retry with nexthop objects
2409 [ $? -eq $ksft_skip ] && reru 2269 [ $? -eq $ksft_skip ] && rerun_nh=0
2410 2270
2411 if [ "${rerun_nh}" = "1" ]; t 2271 if [ "${rerun_nh}" = "1" ]; then
2412 run_test_nh "${name}" 2272 run_test_nh "${name}" "${desc}"
2413 fi 2273 fi
2414 fi 2274 fi
2415 name="" 2275 name=""
2416 desc="" 2276 desc=""
2417 rerun_nh=0 2277 rerun_nh=0
2418 done 2278 done
2419 2279
2420 exit ${exitcode} 2280 exit ${exitcode}
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