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Fri, 13 Mar 2026 12:48:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id WeEmCaYHtGk6WQAAD6G6ig (envelope-from ); Fri, 13 Mar 2026 12:48:38 +0000 From: Fernando Fernandez Mancera To: netdev@vger.kernel.org Cc: linux-kselftest@vger.kernel.org, shuah@kernel.org, horms@kernel.org, pabeni@redhat.com, kuba@kernel.org, edumazet@google.com, davem@davemloft.net, Fernando Fernandez Mancera Subject: [PATCH net-next v3] selftests: net: add ipv6 RA route to ECMP merge test Date: Fri, 13 Mar 2026 13:48:27 +0100 Message-ID: <20260313124827.3945-1-fmancera@suse.de> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.01 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; 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Add a test scenario mixing RA and static routes with gateway to check that they are not getting merged. Signed-off-by: Fernando Fernandez Mancera --- v2: added CONFIG_IPV6_ROUTE_INFO to the config v3: added CONFIG_IPV6_ROUTER_PREF to the config, tested with virtme-ng --- tools/testing/selftests/net/config | 2 ++ tools/testing/selftests/net/fib_tests.sh | 17 +++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config index cd49b7dfe216..2a390cae41bf 100644 --- a/tools/testing/selftests/net/config +++ b/tools/testing/selftests/net/config @@ -43,6 +43,8 @@ CONFIG_IPV6_ILA=m CONFIG_IPV6_IOAM6_LWTUNNEL=y CONFIG_IPV6_MROUTE=y CONFIG_IPV6_MULTIPLE_TABLES=y +CONFIG_IPV6_ROUTE_INFO=y +CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_RPL_LWTUNNEL=y CONFIG_IPV6_SEG6_LWTUNNEL=y CONFIG_IPV6_SIT=y diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh index 439461080c60..05dadc3f55b1 100755 --- a/tools/testing/selftests/net/fib_tests.sh +++ b/tools/testing/selftests/net/fib_tests.sh @@ -1534,6 +1534,23 @@ fib6_ra_to_static() log_test $ret 0 "ipv6 promote RA route to static" + # Prepare for RA route with gateway + $NS_EXEC sysctl -wq net.ipv6.conf.veth1.accept_ra_rt_info_max_plen=64 + + # Add initial route to cause ECMP merging + $IP -6 route add 2001:12::/64 via fe80::dead:beef dev veth1 + + $NS_EXEC ra6 -i veth2 -d 2001:10::1 -R 2001:12::/64#1#120 + + # Routes are not merged as RA routes are not elegible for ECMP + check_rt_num 2 "$($IP -6 route list | grep -c "2001:12::/64 via")" + + $IP -6 route append 2001:12::/64 via fe80::dead:feeb dev veth1 + + check_rt_num 2 "$($IP -6 route list | grep -c "nexthop via")" + + log_test "$ret" 0 "ipv6 RA route with nexthop do not merge into ECMP with static" + set +e cleanup &> /dev/null -- 2.53.0