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Commit 7650b1a9 authored by David S. Miller's avatar David S. Miller
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Merge branch 'mp-inner-L3' 

Stephen Suryaputra says:

====================
net: Multipath hashing on inner L3

This series extends commit 363887a2 ("ipv4: Support multipath
hashing on inner IP pkts for GRE tunnel") to include support when the
outer L3 is IPv6 and to consider the case where the inner L3 is
different version from the outer L3, such as IPv6 tunneled by IPv4 GRE
or vice versa. It also includes kselftest scripts to test the use cases.

v2: Clarify the commit messages in the commits in this series to use the
    term tunneled by IPv4 GRE or by IPv6 GRE so that it's clear which
    one is the inner and which one is the outer (per David Miller).
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents faf5577f 2800f248
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Showing with 1274 additions and 4 deletions
Documentation/networking/ip-sysctl.txt
View file @ 7650b1a9
...@@ -1473,6 +1473,7 @@ fib_multipath_hash_policy - INTEGER ...@@ -1473,6 +1473,7 @@ fib_multipath_hash_policy - INTEGER
Possible values: Possible values:
0 - Layer 3 (source and destination addresses plus flow label) 0 - Layer 3 (source and destination addresses plus flow label)
1 - Layer 4 (standard 5-tuple) 1 - Layer 4 (standard 5-tuple)
2 - Layer 3 or inner Layer 3 if present
anycast_src_echo_reply - BOOLEAN anycast_src_echo_reply - BOOLEAN
Controls the use of anycast addresses as source addresses for ICMPv6 Controls the use of anycast addresses as source addresses for ICMPv6
......
net/ipv4/route.c
View file @ 7650b1a9
...@@ -1964,17 +1964,30 @@ int fib_multipath_hash(const struct net *net, const struct flowi4 *fl4, ...@@ -1964,17 +1964,30 @@ int fib_multipath_hash(const struct net *net, const struct flowi4 *fl4,
break; break;
case 2: case 2:
memset(&hash_keys, 0, sizeof(hash_keys)); memset(&hash_keys, 0, sizeof(hash_keys));
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
/* skb is currently provided only when forwarding */ /* skb is currently provided only when forwarding */
if (skb) { if (skb) {
struct flow_keys keys; struct flow_keys keys;
skb_flow_dissect_flow_keys(skb, &keys, 0); skb_flow_dissect_flow_keys(skb, &keys, 0);
/* Inner can be v4 or v6 */
if (keys.control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
hash_keys.addrs.v4addrs.src = keys.addrs.v4addrs.src; hash_keys.addrs.v4addrs.src = keys.addrs.v4addrs.src;
hash_keys.addrs.v4addrs.dst = keys.addrs.v4addrs.dst; hash_keys.addrs.v4addrs.dst = keys.addrs.v4addrs.dst;
} else if (keys.control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
hash_keys.addrs.v6addrs.src = keys.addrs.v6addrs.src;
hash_keys.addrs.v6addrs.dst = keys.addrs.v6addrs.dst;
hash_keys.tags.flow_label = keys.tags.flow_label;
hash_keys.basic.ip_proto = keys.basic.ip_proto;
} else { } else {
/* Same as case 0 */ /* Same as case 0 */
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
ip_multipath_l3_keys(skb, &hash_keys);
}
} else {
/* Same as case 0 */
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
hash_keys.addrs.v4addrs.src = fl4->saddr; hash_keys.addrs.v4addrs.src = fl4->saddr;
hash_keys.addrs.v4addrs.dst = fl4->daddr; hash_keys.addrs.v4addrs.dst = fl4->daddr;
} }
......
net/ipv6/route.c
View file @ 7650b1a9
...@@ -2370,6 +2370,42 @@ u32 rt6_multipath_hash(const struct net *net, const struct flowi6 *fl6, ...@@ -2370,6 +2370,42 @@ u32 rt6_multipath_hash(const struct net *net, const struct flowi6 *fl6,
hash_keys.basic.ip_proto = fl6->flowi6_proto; hash_keys.basic.ip_proto = fl6->flowi6_proto;
} }
break; break;
case 2:
memset(&hash_keys, 0, sizeof(hash_keys));
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
if (skb) {
struct flow_keys keys;
if (!flkeys) {
skb_flow_dissect_flow_keys(skb, &keys, 0);
flkeys = &keys;
}
/* Inner can be v4 or v6 */
if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
hash_keys.addrs.v4addrs.src = flkeys->addrs.v4addrs.src;
hash_keys.addrs.v4addrs.dst = flkeys->addrs.v4addrs.dst;
} else if (flkeys->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
hash_keys.addrs.v6addrs.src = flkeys->addrs.v6addrs.src;
hash_keys.addrs.v6addrs.dst = flkeys->addrs.v6addrs.dst;
hash_keys.tags.flow_label = flkeys->tags.flow_label;
hash_keys.basic.ip_proto = flkeys->basic.ip_proto;
} else {
/* Same as case 0 */
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
ip6_multipath_l3_keys(skb, &hash_keys, flkeys);
}
} else {
/* Same as case 0 */
hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
hash_keys.addrs.v6addrs.src = fl6->saddr;
hash_keys.addrs.v6addrs.dst = fl6->daddr;
hash_keys.tags.flow_label = (__force u32)flowi6_get_flowlabel(fl6);
hash_keys.basic.ip_proto = fl6->flowi6_proto;
}
break;
} }
mhash = flow_hash_from_keys(&hash_keys); mhash = flow_hash_from_keys(&hash_keys);
......
tools/testing/selftests/net/forwarding/gre_inner_v4_multipath.sh 0 → 100755
View file @ 7650b1a9
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Test traffic distribution when there are multiple routes between an IPv4
# GRE tunnel. The tunnel carries IPv4 traffic between multiple hosts.
# Multiple routes are in the underlay network. With the default multipath
# policy, SW2 will only look at the outer IP addresses, hence only a single
# route would be used.
#
# +-------------------------+
# | H1 |
# | $h1 + |
# | 192.0.3.{2-62}/24 | |
# +-------------------|-----+
# |
# +-------------------|------------------------+
# | SW1 | |
# | $ol1 + |
# | 192.0.3.1/24 |
# | |
# | + g1 (gre) |
# | loc=192.0.2.65 |
# | rem=192.0.2.66 --. |
# | tos=inherit | |
# | v |
# | + $ul1 |
# | | 192.0.2.129/28 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | SW2 | |
# | $ul21 + |
# | 192.0.2.130/28 |
# | | |
# ! ________________|_____ |
# | / \ |
# | | | |
# | + $ul22.111 (vlan) + $ul22.222 (vlan) |
# | | 192.0.2.145/28 | 192.0.2.161/28 |
# | | | |
# +--|----------------------|------------------+
# | |
# +--|----------------------|------------------+
# | | | |
# | + $ul32.111 (vlan) + $ul32.222 (vlan) |
# | | 192.0.2.146/28 | 192.0.2.162/28 |
# | | | |
# | \______________________/ |
# | | |
# | | |
# | $ul31 + |
# | 192.0.2.177/28 | SW3 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | + $ul4 |
# | ^ 192.0.2.178/28 |
# | | |
# | + g2 (gre) | |
# | loc=192.0.2.66 | |
# | rem=192.0.2.65 --' |
# | tos=inherit |
# | |
# | $ol4 + |
# | 192.0.4.1/24 | SW4 |
# +--------------------|-----------------------+
# |
# +--------------------|---------+
# | | |
# | $h2 + |
# | 192.0.4.{2-62}/24 H2 |
# +------------------------------+
ALL_TESTS="
ping_ipv4
multipath_ipv4
"
NUM_NETIFS=10
source lib.sh
h1_create()
{
simple_if_init $h1 192.0.3.2/24
ip route add vrf v$h1 192.0.4.0/24 via 192.0.3.1
}
h1_destroy()
{
ip route del vrf v$h1 192.0.4.0/24 via 192.0.3.1
simple_if_fini $h1 192.0.3.2/24
}
sw1_create()
{
simple_if_init $ol1 192.0.3.1/24
__simple_if_init $ul1 v$ol1 192.0.2.129/28
tunnel_create g1 gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1
__simple_if_init g1 v$ol1 192.0.2.65/32
ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130
ip route add vrf v$ol1 192.0.4.0/24 nexthop dev g1
}
sw1_destroy()
{
ip route del vrf v$ol1 192.0.4.0/24
ip route del vrf v$ol1 192.0.2.66/32
__simple_if_fini g1 192.0.2.65/32
tunnel_destroy g1
__simple_if_fini $ul1 192.0.2.129/28
simple_if_fini $ol1 192.0.3.1/24
}
sw2_create()
{
simple_if_init $ul21 192.0.2.130/28
__simple_if_init $ul22 v$ul21
vlan_create $ul22 111 v$ul21 192.0.2.145/28
vlan_create $ul22 222 v$ul21 192.0.2.161/28
ip route add vrf v$ul21 192.0.2.65/32 via 192.0.2.129
ip route add vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 \
nexthop via 192.0.2.162
}
sw2_destroy()
{
ip route del vrf v$ul21 192.0.2.66/32
ip route del vrf v$ul21 192.0.2.65/32
vlan_destroy $ul22 222
vlan_destroy $ul22 111
__simple_if_fini $ul22
simple_if_fini $ul21 192.0.2.130/28
}
sw3_create()
{
simple_if_init $ul31 192.0.2.177/28
__simple_if_init $ul32 v$ul31
vlan_create $ul32 111 v$ul31 192.0.2.146/28
vlan_create $ul32 222 v$ul31 192.0.2.162/28
ip route add vrf v$ul31 192.0.2.66/32 via 192.0.2.178
ip route add vrf v$ul31 192.0.2.65/32 \
nexthop via 192.0.2.145 \
nexthop via 192.0.2.161
tc qdisc add dev $ul32 clsact
tc filter add dev $ul32 ingress pref 111 prot 802.1Q \
flower vlan_id 111 action pass
tc filter add dev $ul32 ingress pref 222 prot 802.1Q \
flower vlan_id 222 action pass
}
sw3_destroy()
{
tc qdisc del dev $ul32 clsact
ip route del vrf v$ul31 192.0.2.65/32
ip route del vrf v$ul31 192.0.2.66/32
vlan_destroy $ul32 222
vlan_destroy $ul32 111
__simple_if_fini $ul32
simple_if_fini $ul31 192.0.2.177/28
}
sw4_create()
{
simple_if_init $ol4 192.0.4.1/24
__simple_if_init $ul4 v$ol4 192.0.2.178/28
tunnel_create g2 gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol4
__simple_if_init g2 v$ol4 192.0.2.66/32
ip route add vrf v$ol4 192.0.2.65/32 via 192.0.2.177
ip route add vrf v$ol4 192.0.3.0/24 nexthop dev g2
}
sw4_destroy()
{
ip route del vrf v$ol4 192.0.3.0/24
ip route del vrf v$ol4 192.0.2.65/32
__simple_if_fini g2 192.0.2.66/32
tunnel_destroy g2
__simple_if_fini $ul4 192.0.2.178/28
simple_if_fini $ol4 192.0.4.1/24
}
h2_create()
{
simple_if_init $h2 192.0.4.2/24
ip route add vrf v$h2 192.0.3.0/24 via 192.0.4.1
}
h2_destroy()
{
ip route del vrf v$h2 192.0.3.0/24 via 192.0.4.1
simple_if_fini $h2 192.0.4.2/24
}
setup_prepare()
{
h1=${NETIFS[p1]}
ol1=${NETIFS[p2]}
ul1=${NETIFS[p3]}
ul21=${NETIFS[p4]}
ul22=${NETIFS[p5]}
ul32=${NETIFS[p6]}
ul31=${NETIFS[p7]}
ul4=${NETIFS[p8]}
ol4=${NETIFS[p9]}
h2=${NETIFS[p10]}
vrf_prepare
h1_create
sw1_create
sw2_create
sw3_create
sw4_create
h2_create
forwarding_enable
}
cleanup()
{
pre_cleanup
forwarding_restore
h2_destroy
sw4_destroy
sw3_destroy
sw2_destroy
sw1_destroy
h1_destroy
vrf_cleanup
}
multipath4_test()
{
local what=$1; shift
local weight1=$1; shift
local weight2=$1; shift
sysctl_set net.ipv4.fib_multipath_hash_policy 2
ip route replace vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 weight $weight1 \
nexthop via 192.0.2.162 weight $weight2
local t0_111=$(tc_rule_stats_get $ul32 111 ingress)
local t0_222=$(tc_rule_stats_get $ul32 222 ingress)
ip vrf exec v$h1 \
$MZ $h1 -q -p 64 -A "192.0.3.2-192.0.3.62" -B "192.0.4.2-192.0.4.62" \
-d 1msec -c 50 -t udp "sp=1024,dp=1024"
sleep 1
local t1_111=$(tc_rule_stats_get $ul32 111 ingress)
local t1_222=$(tc_rule_stats_get $ul32 222 ingress)
local d111=$((t1_111 - t0_111))
local d222=$((t1_222 - t0_222))
multipath_eval "$what" $weight1 $weight2 $d111 $d222
ip route replace vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 \
nexthop via 192.0.2.162
sysctl_restore net.ipv4.fib_multipath_hash_policy
}
ping_ipv4()
{
ping_test $h1 192.0.4.2
}
multipath_ipv4()
{
log_info "Running IPv4 over GRE over IPv4 multipath tests"
multipath4_test "ECMP" 1 1
multipath4_test "Weighted MP 2:1" 2 1
multipath4_test "Weighted MP 11:45" 11 45
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
tools/testing/selftests/net/forwarding/gre_inner_v6_multipath.sh 0 → 100755
View file @ 7650b1a9
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Test traffic distribution when there are multiple routes between an IPv4
# GRE tunnel. The tunnel carries IPv6 traffic between multiple hosts.
# Multiple routes are in the underlay network. With the default multipath
# policy, SW2 will only look at the outer IP addresses, hence only a single
# route would be used.
#
# +-------------------------+
# | H1 |
# | $h1 + |
# | 2001:db8:1::2/64 | |
# +-------------------|-----+
# |
# +-------------------|------------------------+
# | SW1 | |
# | $ol1 + |
# | 2001:db8:1::1/64 |
# | |
# | + g1 (gre) |
# | loc=192.0.2.65 |
# | rem=192.0.2.66 --. |
# | tos=inherit | |
# | v |
# | + $ul1 |
# | | 192.0.2.129/28 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | SW2 | |
# | $ul21 + |
# | 192.0.2.130/28 |
# | | |
# ! ________________|_____ |
# | / \ |
# | | | |
# | + $ul22.111 (vlan) + $ul22.222 (vlan) |
# | | 192.0.2.145/28 | 192.0.2.161/28 |
# | | | |
# +--|----------------------|------------------+
# | |
# +--|----------------------|------------------+
# | | | |
# | + $ul32.111 (vlan) + $ul32.222 (vlan) |
# | | 192.0.2.146/28 | 192.0.2.162/28 |
# | | | |
# | \______________________/ |
# | | |
# | | |
# | $ul31 + |
# | 192.0.2.177/28 | SW3 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | + $ul4 |
# | ^ 192.0.2.178/28 |
# | | |
# | + g2 (gre) | |
# | loc=192.0.2.66 | |
# | rem=192.0.2.65 --' |
# | tos=inherit |
# | |
# | $ol4 + |
# | 2001:db8:2::1/64 | SW4 |
# +--------------------|-----------------------+
# |
# +--------------------|---------+
# | | |
# | $h2 + |
# | 2001:db8:2::2/64 H2 |
# +------------------------------+
ALL_TESTS="
ping_ipv6
multipath_ipv6
"
NUM_NETIFS=10
source lib.sh
h1_create()
{
simple_if_init $h1 2001:db8:1::2/64
ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1
}
h1_destroy()
{
ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1
simple_if_fini $h1 2001:db8:1::2/64
}
sw1_create()
{
simple_if_init $ol1 2001:db8:1::1/64
__simple_if_init $ul1 v$ol1 192.0.2.129/28
tunnel_create g1 gre 192.0.2.65 192.0.2.66 tos inherit dev v$ol1
__simple_if_init g1 v$ol1 192.0.2.65/32
ip route add vrf v$ol1 192.0.2.66/32 via 192.0.2.130
ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1
}
sw1_destroy()
{
ip -6 route del vrf v$ol1 2001:db8:2::/64
ip route del vrf v$ol1 192.0.2.66/32
__simple_if_fini g1 192.0.2.65/32
tunnel_destroy g1
__simple_if_fini $ul1 192.0.2.129/28
simple_if_fini $ol1 2001:db8:1::1/64
}
sw2_create()
{
simple_if_init $ul21 192.0.2.130/28
__simple_if_init $ul22 v$ul21
vlan_create $ul22 111 v$ul21 192.0.2.145/28
vlan_create $ul22 222 v$ul21 192.0.2.161/28
ip route add vrf v$ul21 192.0.2.65/32 via 192.0.2.129
ip route add vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 \
nexthop via 192.0.2.162
}
sw2_destroy()
{
ip route del vrf v$ul21 192.0.2.66/32
ip route del vrf v$ul21 192.0.2.65/32
vlan_destroy $ul22 222
vlan_destroy $ul22 111
__simple_if_fini $ul22
simple_if_fini $ul21 192.0.2.130/28
}
sw3_create()
{
simple_if_init $ul31 192.0.2.177/28
__simple_if_init $ul32 v$ul31
vlan_create $ul32 111 v$ul31 192.0.2.146/28
vlan_create $ul32 222 v$ul31 192.0.2.162/28
ip route add vrf v$ul31 192.0.2.66/32 via 192.0.2.178
ip route add vrf v$ul31 192.0.2.65/32 \
nexthop via 192.0.2.145 \
nexthop via 192.0.2.161
tc qdisc add dev $ul32 clsact
tc filter add dev $ul32 ingress pref 111 prot 802.1Q \
flower vlan_id 111 action pass
tc filter add dev $ul32 ingress pref 222 prot 802.1Q \
flower vlan_id 222 action pass
}
sw3_destroy()
{
tc qdisc del dev $ul32 clsact
ip route del vrf v$ul31 192.0.2.65/32
ip route del vrf v$ul31 192.0.2.66/32
vlan_destroy $ul32 222
vlan_destroy $ul32 111
__simple_if_fini $ul32
simple_if_fini $ul31 192.0.2.177/28
}
sw4_create()
{
simple_if_init $ol4 2001:db8:2::1/64
__simple_if_init $ul4 v$ol4 192.0.2.178/28
tunnel_create g2 gre 192.0.2.66 192.0.2.65 tos inherit dev v$ol4
__simple_if_init g2 v$ol4 192.0.2.66/32
ip route add vrf v$ol4 192.0.2.65/32 via 192.0.2.177
ip -6 route add vrf v$ol4 2001:db8:1::/64 dev g2
}
sw4_destroy()
{
ip -6 route del vrf v$ol4 2001:db8:1::/64
ip route del vrf v$ol4 192.0.2.65/32
__simple_if_fini g2 192.0.2.66/32
tunnel_destroy g2
__simple_if_fini $ul4 192.0.2.178/28
simple_if_fini $ol4 2001:db8:2::1/64
}
h2_create()
{
simple_if_init $h2 2001:db8:2::2/64
ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
}
h2_destroy()
{
ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
simple_if_fini $h2 2001:db8:2::2/64
}
setup_prepare()
{
h1=${NETIFS[p1]}
ol1=${NETIFS[p2]}
ul1=${NETIFS[p3]}
ul21=${NETIFS[p4]}
ul22=${NETIFS[p5]}
ul32=${NETIFS[p6]}
ul31=${NETIFS[p7]}
ul4=${NETIFS[p8]}
ol4=${NETIFS[p9]}
h2=${NETIFS[p10]}
vrf_prepare
h1_create
sw1_create
sw2_create
sw3_create
sw4_create
h2_create
forwarding_enable
}
cleanup()
{
pre_cleanup
forwarding_restore
h2_destroy
sw4_destroy
sw3_destroy
sw2_destroy
sw1_destroy
h1_destroy
vrf_cleanup
}
multipath6_test()
{
local what=$1; shift
local weight1=$1; shift
local weight2=$1; shift
sysctl_set net.ipv4.fib_multipath_hash_policy 2
ip route replace vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 weight $weight1 \
nexthop via 192.0.2.162 weight $weight2
local t0_111=$(tc_rule_stats_get $ul32 111 ingress)
local t0_222=$(tc_rule_stats_get $ul32 222 ingress)
ip vrf exec v$h1 \
$MZ $h1 -6 -q -p 64 -A "2001:db8:1::2-2001:db8:1::1e" \
-B "2001:db8:2::2-2001:db8:2::1e" \
-d 1msec -c 50 -t udp "sp=1024,dp=1024"
sleep 1
local t1_111=$(tc_rule_stats_get $ul32 111 ingress)
local t1_222=$(tc_rule_stats_get $ul32 222 ingress)
local d111=$((t1_111 - t0_111))
local d222=$((t1_222 - t0_222))
multipath_eval "$what" $weight1 $weight2 $d111 $d222
ip route replace vrf v$ul21 192.0.2.66/32 \
nexthop via 192.0.2.146 \
nexthop via 192.0.2.162
sysctl_restore net.ipv4.fib_multipath_hash_policy
}
ping_ipv6()
{
ping_test $h1 2001:db8:2::2
}
multipath_ipv6()
{
log_info "Running IPv6 over GRE over IPv4 multipath tests"
multipath6_test "ECMP" 1 1
multipath6_test "Weighted MP 2:1" 2 1
multipath6_test "Weighted MP 11:45" 11 45
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
tools/testing/selftests/net/forwarding/ip6gre_inner_v4_multipath.sh 0 → 100755
View file @ 7650b1a9
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Test traffic distribution when there are multiple routes between an IPv6
# GRE tunnel. The tunnel carries IPv4 traffic between multiple hosts.
# Multiple routes are in the underlay network. With the default multipath
# policy, SW2 will only look at the outer IP addresses, hence only a single
# route would be used.
#
# +-------------------------+
# | H1 |
# | $h1 + |
# | 192.0.3.{2-62}/24 | |
# +-------------------|-----+
# |
# +-------------------|-------------------------+
# | SW1 | |
# | $ol1 + |
# | 192.0.3.1/24 |
# | |
# | + g1 (gre) |
# | loc=2001:db8:40::1 |
# | rem=2001:db8:40::2 --. |
# | tos=inherit | |
# | v |
# | + $ul1 |
# | | 2001:db8:80::1/64 |
# +-------------------------|-------------------+
# |
# +-------------------------|-------------------+
# | SW2 | |
# | $ul21 + |
# | 2001:db8:80::2/64 |
# | | |
# ! ________________|_____ |
# | / \ |
# | | | |
# | + $ul22.111 (vlan) + $ul22.222 (vlan) |
# | | 2001:db8:81::1/64 | 2001:db8:82::1/64 |
# | | | |
# +--|----------------------|-------------------+
# | |
# +--|----------------------|-------------------+
# | | | |
# | + $ul32.111 (vlan) + $ul32.222 (vlan) |
# | | 2001:db8:81::2/64 | 2001:db8:82::2/64 |
# | | | |
# | \______________________/ |
# | | |
# | | |
# | $ul31 + |
# | 2001:db8:83::2/64 | SW3 |
# +-------------------------|-------------------+
# |
# +-------------------------|-------------------+
# | + $ul4 |
# | ^ 2001:db8:83::1/64 |
# | + g2 (gre) | |
# | loc=2001:db8:40::2 | |
# | rem=2001:db8:40::1 --' |
# | tos=inherit |
# | |
# | $ol4 + |
# | 192.0.4.1/24 | SW4 |
# +--------------------|------------------------+
# |
# +--------------------|---------+
# | | |
# | $h2 + |
# | 192.0.4.{2-62}/24 H2 |
# +------------------------------+
ALL_TESTS="
ping_ipv4
multipath_ipv4
"
NUM_NETIFS=10
source lib.sh
h1_create()
{
simple_if_init $h1 192.0.3.2/24
ip route add vrf v$h1 192.0.4.0/24 via 192.0.3.1
}
h1_destroy()
{
ip route del vrf v$h1 192.0.4.0/24 via 192.0.3.1
simple_if_fini $h1 192.0.3.2/24
}
sw1_create()
{
simple_if_init $ol1 192.0.3.1/24
__simple_if_init $ul1 v$ol1 2001:db8:80::1/64
tunnel_create g1 ip6gre 2001:db8:40::1 2001:db8:40::2 tos inherit dev v$ol1
__simple_if_init g1 v$ol1 2001:db8:40::1/128
ip -6 route add vrf v$ol1 2001:db8:40::2/128 via 2001:db8:80::2
ip route add vrf v$ol1 192.0.4.0/24 nexthop dev g1
}
sw1_destroy()
{
ip route del vrf v$ol1 192.0.4.0/24
ip -6 route del vrf v$ol1 2001:db8:40::2/128
__simple_if_fini g1 2001:db8:40::1/128
tunnel_destroy g1
__simple_if_fini $ul1 2001:db8:80::1/64
simple_if_fini $ol1 192.0.3.1/24
}
sw2_create()
{
simple_if_init $ul21 2001:db8:80::2/64
__simple_if_init $ul22 v$ul21
vlan_create $ul22 111 v$ul21 2001:db8:81::1/64
vlan_create $ul22 222 v$ul21 2001:db8:82::1/64
ip -6 route add vrf v$ul21 2001:db8:40::1/128 via 2001:db8:80::1
ip -6 route add vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 \
nexthop via 2001:db8:82::2
}
sw2_destroy()
{
ip -6 route del vrf v$ul21 2001:db8:40::2/128
ip -6 route del vrf v$ul21 2001:db8:40::1/128
vlan_destroy $ul22 222
vlan_destroy $ul22 111
__simple_if_fini $ul22
simple_if_fini $ul21 2001:db8:80::2/64
}
sw3_create()
{
simple_if_init $ul31 2001:db8:83::2/64
__simple_if_init $ul32 v$ul31
vlan_create $ul32 111 v$ul31 2001:db8:81::2/64
vlan_create $ul32 222 v$ul31 2001:db8:82::2/64
ip -6 route add vrf v$ul31 2001:db8:40::2/128 via 2001:db8:83::1
ip -6 route add vrf v$ul31 2001:db8:40::1/128 \
nexthop via 2001:db8:81::1 \
nexthop via 2001:db8:82::1
tc qdisc add dev $ul32 clsact
tc filter add dev $ul32 ingress pref 111 prot 802.1Q \
flower vlan_id 111 action pass
tc filter add dev $ul32 ingress pref 222 prot 802.1Q \
flower vlan_id 222 action pass
}
sw3_destroy()
{
tc qdisc del dev $ul32 clsact
ip -6 route del vrf v$ul31 2001:db8:40::1/128
ip -6 route del vrf v$ul31 2001:db8:40::2/128
vlan_destroy $ul32 222
vlan_destroy $ul32 111
__simple_if_fini $ul32
simple_if_fini $ul31 2001:Db8:83::2/64
}
sw4_create()
{
simple_if_init $ol4 192.0.4.1/24
__simple_if_init $ul4 v$ol4 2001:db8:83::1/64
tunnel_create g2 ip6gre 2001:db8:40::2 2001:db8:40::1 tos inherit dev v$ol4
__simple_if_init g2 v$ol4 2001:db8:40::2/128
ip -6 route add vrf v$ol4 2001:db8:40::1/128 via 2001:db8:83::2
ip route add vrf v$ol4 192.0.3.0/24 nexthop dev g2
}
sw4_destroy()
{
ip route del vrf v$ol4 192.0.3.0/24
ip -6 route del vrf v$ol4 2001:db8:40::1/128
__simple_if_fini g2 2001:db8:40::2/128
tunnel_destroy g2
__simple_if_fini $ul4 2001:db8:83::1/64
simple_if_fini $ol4 192.0.4.1/24
}
h2_create()
{
simple_if_init $h2 192.0.4.2/24
ip route add vrf v$h2 192.0.3.0/24 via 192.0.4.1
}
h2_destroy()
{
ip route del vrf v$h2 192.0.3.0/24 via 192.0.4.1
simple_if_fini $h2 192.0.4.2/24
}
setup_prepare()
{
h1=${NETIFS[p1]}
ol1=${NETIFS[p2]}
ul1=${NETIFS[p3]}
ul21=${NETIFS[p4]}
ul22=${NETIFS[p5]}
ul32=${NETIFS[p6]}
ul31=${NETIFS[p7]}
ul4=${NETIFS[p8]}
ol4=${NETIFS[p9]}
h2=${NETIFS[p10]}
vrf_prepare
h1_create
sw1_create
sw2_create
sw3_create
sw4_create
h2_create
forwarding_enable
}
cleanup()
{
pre_cleanup
forwarding_restore
h2_destroy
sw4_destroy
sw3_destroy
sw2_destroy
sw1_destroy
h1_destroy
vrf_cleanup
}
multipath4_test()
{
local what=$1; shift
local weight1=$1; shift
local weight2=$1; shift
sysctl_set net.ipv6.fib_multipath_hash_policy 2
ip route replace vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 weight $weight1 \
nexthop via 2001:db8:82::2 weight $weight2
local t0_111=$(tc_rule_stats_get $ul32 111 ingress)
local t0_222=$(tc_rule_stats_get $ul32 222 ingress)
ip vrf exec v$h1 \
$MZ $h1 -q -p 64 -A "192.0.3.2-192.0.3.62" -B "192.0.4.2-192.0.4.62" \
-d 1msec -c 50 -t udp "sp=1024,dp=1024"
sleep 1
local t1_111=$(tc_rule_stats_get $ul32 111 ingress)
local t1_222=$(tc_rule_stats_get $ul32 222 ingress)
local d111=$((t1_111 - t0_111))
local d222=$((t1_222 - t0_222))
multipath_eval "$what" $weight1 $weight2 $d111 $d222
ip route replace vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 \
nexthop via 2001:db8:82::2
sysctl_restore net.ipv6.fib_multipath_hash_policy
}
ping_ipv4()
{
ping_test $h1 192.0.4.2
}
multipath_ipv4()
{
log_info "Running IPv4 over GRE over IPv6 multipath tests"
multipath4_test "ECMP" 1 1
multipath4_test "Weighted MP 2:1" 2 1
multipath4_test "Weighted MP 11:45" 11 45
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
tools/testing/selftests/net/forwarding/ip6gre_inner_v6_multipath.sh 0 → 100755
View file @ 7650b1a9
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Test traffic distribution when there are multiple routes between an IPv6
# GRE tunnel. The tunnel carries IPv6 traffic between multiple hosts.
# Multiple routes are in the underlay network. With the default multipath
# policy, SW2 will only look at the outer IP addresses, hence only a single
# route would be used.
#
# +-------------------------+
# | H1 |
# | $h1 + |
# | 2001:db8:1::2/64 | |
# +-------------------|-----+
# |
# +-------------------|-------------------------+
# | SW1 | |
# | $ol1 + |
# | 2001:db8:1::1/64 |
# | |
# | + g1 (gre) |
# | loc=2001:db8:40::1 |
# | rem=2001:db8:40::2 --. |
# | tos=inherit | |
# | v |
# | + $ul1 |
# | | 2001:db8:80::1/64 |
# +-------------------------|-------------------+
# |
# +-------------------------|-------------------+
# | SW2 | |
# | $ul21 + |
# | 2001:db8:80::2/64 |
# | | |
# ! ________________|_____ |
# | / \ |
# | | | |
# | + $ul22.111 (vlan) + $ul22.222 (vlan) |
# | | 2001:db8:81::1/64 | 2001:db8:82::1/64 |
# | | | |
# +--|----------------------|-------------------+
# | |
# +--|----------------------|-------------------+
# | | | |
# | + $ul32.111 (vlan) + $ul32.222 (vlan) |
# | | 2001:db8:81::2/64 | 2001:db8:82::2/64 |
# | | | |
# | \______________________/ |
# | | |
# | | |
# | $ul31 + |
# | 2001:db8:83::2/64 | SW3 |
# +-------------------------|-------------------+
# |
# +-------------------------|-------------------+
# | + $ul4 |
# | ^ 2001:db8:83::1/64 |
# | + g2 (gre) | |
# | loc=2001:db8:40::2 | |
# | rem=2001:db8:40::1 --' |
# | tos=inherit |
# | |
# | $ol4 + |
# | 2001:db8:2::1/64 | SW4 |
# +--------------------|------------------------+
# |
# +--------------------|---------+
# | | |
# | $h2 + |
# | 2001:db8:2::2/64 H2 |
# +------------------------------+
ALL_TESTS="
ping_ipv6
multipath_ipv6
"
NUM_NETIFS=10
source lib.sh
h1_create()
{
simple_if_init $h1 2001:db8:1::2/64
ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1
}
h1_destroy()
{
ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::1
simple_if_fini $h1 2001:db8:1::2/64
}
sw1_create()
{
simple_if_init $ol1 2001:db8:1::1/64
__simple_if_init $ul1 v$ol1 2001:db8:80::1/64
tunnel_create g1 ip6gre 2001:db8:40::1 2001:db8:40::2 tos inherit dev v$ol1
__simple_if_init g1 v$ol1 2001:db8:40::1/128
ip -6 route add vrf v$ol1 2001:db8:40::2/128 via 2001:db8:80::2
ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1
}
sw1_destroy()
{
ip -6 route del vrf v$ol1 2001:db8:2::/64
ip -6 route del vrf v$ol1 2001:db8:40::2/128
__simple_if_fini g1 2001:db8:40::1/128
tunnel_destroy g1
__simple_if_fini $ul1 2001:db8:80::1/64
simple_if_fini $ol1 2001:db8:1::1/64
}
sw2_create()
{
simple_if_init $ul21 2001:db8:80::2/64
__simple_if_init $ul22 v$ul21
vlan_create $ul22 111 v$ul21 2001:db8:81::1/64
vlan_create $ul22 222 v$ul21 2001:db8:82::1/64
ip -6 route add vrf v$ul21 2001:db8:40::1/128 via 2001:db8:80::1
ip -6 route add vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 \
nexthop via 2001:db8:82::2
}
sw2_destroy()
{
ip -6 route del vrf v$ul21 2001:db8:40::2/128
ip -6 route del vrf v$ul21 2001:db8:40::1/128
vlan_destroy $ul22 222
vlan_destroy $ul22 111
__simple_if_fini $ul22
simple_if_fini $ul21 2001:db8:80::2/64
}
sw3_create()
{
simple_if_init $ul31 2001:db8:83::2/64
__simple_if_init $ul32 v$ul31
vlan_create $ul32 111 v$ul31 2001:db8:81::2/64
vlan_create $ul32 222 v$ul31 2001:db8:82::2/64
ip -6 route add vrf v$ul31 2001:db8:40::2/128 via 2001:db8:83::1
ip -6 route add vrf v$ul31 2001:db8:40::1/128 \
nexthop via 2001:db8:81::1 \
nexthop via 2001:db8:82::1
tc qdisc add dev $ul32 clsact
tc filter add dev $ul32 ingress pref 111 prot 802.1Q \
flower vlan_id 111 action pass
tc filter add dev $ul32 ingress pref 222 prot 802.1Q \
flower vlan_id 222 action pass
}
sw3_destroy()
{
tc qdisc del dev $ul32 clsact
ip -6 route del vrf v$ul31 2001:db8:40::1/128
ip -6 route del vrf v$ul31 2001:db8:40::2/128
vlan_destroy $ul32 222
vlan_destroy $ul32 111
__simple_if_fini $ul32
simple_if_fini $ul31 2001:Db8:83::2/64
}
sw4_create()
{
simple_if_init $ol4 2001:db8:2::1/64
__simple_if_init $ul4 v$ol4 2001:db8:83::1/64
tunnel_create g2 ip6gre 2001:db8:40::2 2001:db8:40::1 tos inherit dev v$ol4
__simple_if_init g2 v$ol4 2001:db8:40::2/128
ip -6 route add vrf v$ol4 2001:db8:40::1/128 via 2001:db8:83::2
ip -6 route add vrf v$ol4 2001:db8:1::/64 dev g2
}
sw4_destroy()
{
ip -6 route del vrf v$ol4 2001:db8:1::/64
ip -6 route del vrf v$ol4 2001:db8:40::1/128
__simple_if_fini g2 2001:db8:40::2/128
tunnel_destroy g2
__simple_if_fini $ul4 2001:db8:83::1/64
simple_if_fini $ol4 2001:db8:2::1/64
}
h2_create()
{
simple_if_init $h2 2001:db8:2::2/64
ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
}
h2_destroy()
{
ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::1
simple_if_fini $h2 2001:db8:2::2/64
}
setup_prepare()
{
h1=${NETIFS[p1]}
ol1=${NETIFS[p2]}
ul1=${NETIFS[p3]}
ul21=${NETIFS[p4]}
ul22=${NETIFS[p5]}
ul32=${NETIFS[p6]}
ul31=${NETIFS[p7]}
ul4=${NETIFS[p8]}
ol4=${NETIFS[p9]}
h2=${NETIFS[p10]}
vrf_prepare
h1_create
sw1_create
sw2_create
sw3_create
sw4_create
h2_create
forwarding_enable
}
cleanup()
{
pre_cleanup
forwarding_restore
h2_destroy
sw4_destroy
sw3_destroy
sw2_destroy
sw1_destroy
h1_destroy
vrf_cleanup
}
multipath6_test()
{
local what=$1; shift
local weight1=$1; shift
local weight2=$1; shift
sysctl_set net.ipv6.fib_multipath_hash_policy 2
ip route replace vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 weight $weight1 \
nexthop via 2001:db8:82::2 weight $weight2
local t0_111=$(tc_rule_stats_get $ul32 111 ingress)
local t0_222=$(tc_rule_stats_get $ul32 222 ingress)
ip vrf exec v$h1 \
$MZ $h1 -6 -q -p 64 -A "2001:db8:1::2-2001:db8:1::1e" \
-B "2001:db8:2::2-2001:db8:2::1e" \
-d 1msec -c 50 -t udp "sp=1024,dp=1024"
sleep 1
local t1_111=$(tc_rule_stats_get $ul32 111 ingress)
local t1_222=$(tc_rule_stats_get $ul32 222 ingress)
local d111=$((t1_111 - t0_111))
local d222=$((t1_222 - t0_222))
multipath_eval "$what" $weight1 $weight2 $d111 $d222
ip route replace vrf v$ul21 2001:db8:40::2/128 \
nexthop via 2001:db8:81::2 \
nexthop via 2001:db8:82::2
sysctl_restore net.ipv6.fib_multipath_hash_policy
}
ping_ipv6()
{
ping_test $h1 2001:db8:2::2
}
multipath_ipv6()
{
log_info "Running IPv6 over GRE over IPv6 multipath tests"
multipath6_test "ECMP" 1 1
multipath6_test "Weighted MP 2:1" 2 1
multipath6_test "Weighted MP 11:45" 11 45
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
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