tools/testing/selftests/drivers/net/mlxsw/mirror_gre_scale.sh

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 # Test offloading a number of mirrors-to-gretap. The test creates a number of
   4 # tunnels. Then it adds one flower mirror for each of the tunnels, matching a
   5 # given host IP. Then it generates traffic at each of the host IPs and checks
   6 # that the traffic has been mirrored at the appropriate tunnel.
   7 #
   8 #   +--------------------------+                   +--------------------------+
   9 #   | H1                       |                   |                       H2 |
  10 #   |     + $h1                |                   |                $h2 +     |
  11 #   |     | 2001:db8:1:X::1/64 |                   | 2001:db8:1:X::2/64 |     |
  12 #   +-----|--------------------+                   +--------------------|-----+
  13 #         |                                                             |
  14 #   +-----|-------------------------------------------------------------|-----+
  15 #   | SW  o--> mirrors                                                  |     |
  16 #   | +---|-------------------------------------------------------------|---+ |
  17 #   | |   + $swp1                    BR                           $swp2 +   | |
  18 #   | +---------------------------------------------------------------------+ |
  19 #   |                                                                         |
  20 #   |     + $swp3                          + gt6-<X> (ip6gretap)              |
  21 #   |     | 2001:db8:2:X::1/64             : loc=2001:db8:2:X::1              |
  22 #   |     |                                : rem=2001:db8:2:X::2              |
  23 #   |     |                                : ttl=100                          |
  24 #   |     |                                : tos=inherit                      |
  25 #   |     |                                :                                  |
  26 #   +-----|--------------------------------:----------------------------------+
  27 #         |                                :
  28 #   +-----|--------------------------------:----------------------------------+
  29 #   | H3  + $h3                            + h3-gt6-<X> (ip6gretap)           |
  30 #   |       2001:db8:2:X::2/64               loc=2001:db8:2:X::2              |
  31 #   |                                        rem=2001:db8:2:X::1              |
  32 #   |                                        ttl=100                          |
  33 #   |                                        tos=inherit                      |
  34 #   |                                                                         |
  35 #   +-------------------------------------------------------------------------+
  36
  37 source ../../../../net/forwarding/mirror_lib.sh
  38
  39 MIRROR_NUM_NETIFS=6
  40
  41 mirror_gre_ipv6_addr()
  42 {
  43         local net=$1; shift
  44         local num=$1; shift
  45
  46         printf "2001:db8:%x:%x" $net $num
  47 }
  48
  49 mirror_gre_tunnels_create()
  50 {
  51         local count=$1; shift
  52         local should_fail=$1; shift
  53
  54         MIRROR_GRE_BATCH_FILE="$(mktemp)"
  55         for ((i=0; i < count; ++i)); do
  56                 local match_dip=$(mirror_gre_ipv6_addr 1 $i)::2
  57                 local htun=h3-gt6-$i
  58                 local tun=gt6-$i
  59
  60                 ((mirror_gre_tunnels++))
  61
  62                 ip address add dev $h1 $(mirror_gre_ipv6_addr 1 $i)::1/64
  63                 ip address add dev $h2 $(mirror_gre_ipv6_addr 1 $i)::2/64
  64
  65                 ip address add dev $swp3 $(mirror_gre_ipv6_addr 2 $i)::1/64
  66                 ip address add dev $h3 $(mirror_gre_ipv6_addr 2 $i)::2/64
  67
  68                 tunnel_create $tun ip6gretap \
  69                               $(mirror_gre_ipv6_addr 2 $i)::1 \
  70                               $(mirror_gre_ipv6_addr 2 $i)::2 \
  71                               ttl 100 tos inherit allow-localremote
  72
  73                 tunnel_create $htun ip6gretap \
  74                               $(mirror_gre_ipv6_addr 2 $i)::2 \
  75                               $(mirror_gre_ipv6_addr 2 $i)::1
  76                 ip link set $htun vrf v$h3
  77                 matchall_sink_create $htun
  78
  79                 cat >> $MIRROR_GRE_BATCH_FILE <<-EOF
  80                         filter add dev $swp1 ingress pref 1000 \
  81                                 protocol ipv6 \
  82                                 flower $tcflags dst_ip $match_dip \
  83                                 action mirred egress mirror dev $tun
  84                 EOF
  85         done
  86
  87         tc -b $MIRROR_GRE_BATCH_FILE
  88         check_err_fail $should_fail $? "Mirror rule insertion"
  89 }
  90
  91 mirror_gre_tunnels_destroy()
  92 {
  93         local count=$1; shift
  94
  95         for ((i=0; i < count; ++i)); do
  96                 local htun=h3-gt6-$i
  97                 local tun=gt6-$i
  98
  99                 ip address del dev $h3 $(mirror_gre_ipv6_addr 2 $i)::2/64
 100                 ip address del dev $swp3 $(mirror_gre_ipv6_addr 2 $i)::1/64
 101
 102                 ip address del dev $h2 $(mirror_gre_ipv6_addr 1 $i)::2/64
 103                 ip address del dev $h1 $(mirror_gre_ipv6_addr 1 $i)::1/64
 104
 105                 tunnel_destroy $htun
 106                 tunnel_destroy $tun
 107         done
 108 }
 109
 110 __mirror_gre_test()
 111 {
 112         local count=$1; shift
 113         local should_fail=$1; shift
 114
 115         mirror_gre_tunnels_create $count $should_fail
 116         if ((should_fail)); then
 117             return
 118         fi
 119
 120         sleep 5
 121
 122         for ((i = 0; i < count; ++i)); do
 123                 local dip=$(mirror_gre_ipv6_addr 1 $i)::2
 124                 local htun=h3-gt6-$i
 125                 local message
 126
 127                 icmp6_capture_install $htun
 128                 mirror_test v$h1 "" $dip $htun 100 10
 129                 icmp6_capture_uninstall $htun
 130         done
 131 }
 132
 133 mirror_gre_test()
 134 {
 135         local count=$1; shift
 136         local should_fail=$1; shift
 137
 138         if ! tc_offload_check $TC_FLOWER_NUM_NETIFS; then
 139                 check_err 1 "Could not test offloaded functionality"
 140                 return
 141         fi
 142
 143         tcflags="skip_sw"
 144         __mirror_gre_test $count $should_fail
 145 }
 146
 147 mirror_gre_setup_prepare()
 148 {
 149         h1=${NETIFS[p1]}
 150         swp1=${NETIFS[p2]}
 151
 152         swp2=${NETIFS[p3]}
 153         h2=${NETIFS[p4]}
 154
 155         swp3=${NETIFS[p5]}
 156         h3=${NETIFS[p6]}
 157
 158         mirror_gre_tunnels=0
 159
 160         vrf_prepare
 161
 162         simple_if_init $h1
 163         simple_if_init $h2
 164         simple_if_init $h3
 165
 166         ip link add name br1 type bridge vlan_filtering 1
 167         ip link set dev br1 up
 168
 169         ip link set dev $swp1 master br1
 170         ip link set dev $swp1 up
 171         tc qdisc add dev $swp1 clsact
 172
 173         ip link set dev $swp2 master br1
 174         ip link set dev $swp2 up
 175
 176         ip link set dev $swp3 up
 177 }
 178
 179 mirror_gre_cleanup()
 180 {
 181         mirror_gre_tunnels_destroy $mirror_gre_tunnels
 182
 183         ip link set dev $swp3 down
 184
 185         ip link set dev $swp2 down
 186
 187         tc qdisc del dev $swp1 clsact
 188         ip link set dev $swp1 down
 189
 190         ip link del dev br1
 191
 192         simple_if_fini $h3
 193         simple_if_fini $h2
 194         simple_if_fini $h1
 195
 196         vrf_cleanup
 197 }