Date: Tue, 25 Mar 2014 15:03:08 +0000 (UTC) From: Alan Somers <asomers@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r263738 - head/tests/sys/netinet Message-ID: <201403251503.s2PF38BE043599@svn.freebsd.org>
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Author: asomers Date: Tue Mar 25 15:03:08 2014 New Revision: 263738 URL: http://svnweb.freebsd.org/changeset/base/263738 Log: tests/sys/netinet/Makefile tests/sys/netinet/fibs.sh Replace fibs:udp_dontroute with fibs:src_addr_selection_by_subnet. The original test was poorly written; it was actually testing kern/167947 instead of the desired kern/187553. The root cause of the bug is that ifa_ifwithnet did not have a fib argument. The new test more directly targets that behavior. tests/sys/netinet/udp_dontroute.c Delete the auxilliary binary used by the old test PR: kern/187553 MFC after: 3 weeks Sponsored by: Spectra Logic Corporation Deleted: head/tests/sys/netinet/udp_dontroute.c Modified: head/tests/sys/netinet/Makefile head/tests/sys/netinet/fibs_test.sh Modified: head/tests/sys/netinet/Makefile ============================================================================== --- head/tests/sys/netinet/Makefile Tue Mar 25 13:41:55 2014 (r263737) +++ head/tests/sys/netinet/Makefile Tue Mar 25 15:03:08 2014 (r263738) @@ -1,12 +1,7 @@ # $FreeBSD$ TESTSDIR= ${TESTSBASE}/sys/netinet -BINDIR= ${TESTSDIR} ATF_TESTS_SH+= fibs_test -PROG= udp_dontroute -SRCS= udp_dontroute.c -NO_MAN= -WARNS?= 6 .include <bsd.test.mk> Modified: head/tests/sys/netinet/fibs_test.sh ============================================================================== --- head/tests/sys/netinet/fibs_test.sh Tue Mar 25 13:41:55 2014 (r263737) +++ head/tests/sys/netinet/fibs_test.sh Tue Mar 25 15:03:08 2014 (r263738) @@ -255,45 +255,66 @@ subnet_route_with_multiple_fibs_on_same_ cleanup_tap } -# Test that source address selection works correctly for UDP packets with -# SO_DONTROUTE set that are sent on non-default FIBs. +# Regression test for kern/187553 "Source address selection for UDP packets +# with SO_DONTROUTE uses the default FIB". The original complaint was that a +# UDP packet with SO_DONTROUTE set would select a source address from an +# interface on the default FIB instead of the process FIB. # This bug was discovered with "setfib 1 netperf -t UDP_STREAM -H some_host" # Regression test for kern/187553 -atf_test_case udp_dontroute cleanup -udp_dontroute_head() + +# The root cause was that ifa_ifwithnet() did not have a fib argument. It +# would return an address from an interface on any FIB that had a subnet route +# for the destination. If more than one were available, it would choose the +# most specific. The root cause is most easily tested by creating two +# interfaces with overlapping subnet routes, adding a default route to the +# interface with the less specific subnet route, and looking up a host that +# requires the default route using the FIB of the interface with the less +# specific subnet route. "route get" should provide a route that uses the +# interface on the chosen FIB. However, absent the patch for this bug it will +# instead use the other interface. +atf_test_case src_addr_selection_by_subnet cleanup +src_addr_selection_by_subnet_head() { atf_set "descr" "Source address selection for UDP packets with SO_DONTROUTE on non-default FIBs works" atf_set "require.user" "root" atf_set "require.config" "fibs" } -udp_dontroute_body() +src_addr_selection_by_subnet_body() { atf_expect_fail "kern/187553 Source address selection for UDP packets with SO_DONTROUTE uses the default FIB" # Configure the TAP interface to use an RFC5737 nonrouteable address # and a non-default fib - ADDR="192.0.2.2" + ADDR0="192.0.2.2" + ADDR1="192.0.2.3" + GATEWAY0="192.0.2.1" + TARGET="192.0.2.128" SUBNET="192.0.2.0" - MASK="24" - # Use a different IP on the same subnet as the target - TARGET="192.0.2.100" + MASK0="25" + MASK1="26" # Check system configuration if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then atf_skip "This test requires net.add_addr_allfibs=0" fi - get_fibs 1 + get_fibs 2 # Configure a TAP interface - setup_tap ${FIB0} ${ADDR} ${MASK} + setup_tap ${FIB0} ${ADDR0} ${MASK0} + TAP0=${TAP} + setup_tap ${FIB1} ${ADDR1} ${MASK1} + TAP1=${TAP} + + # Add a gateway to the interface with the less specific subnet route + setfib ${FIB0} route add default ${GATEWAY0} - # Send a UDP packet with SO_DONTROUTE. In the failure case, it will - # return ENETUNREACH - SRCDIR=`atf_get_srcdir` - atf_check -o ignore setfib ${FIB0} ${SRCDIR}/udp_dontroute ${TARGET} + # Lookup a route + echo "Looking up route to ${TARGET} with fib ${FIB0}" + echo "Expected behavior is to use interface ${TAP0}" + atf_check -o match:"interface:.${TAP0}" setfib ${FIB0} route -n get ${TARGET} } -udp_dontroute_cleanup() +src_addr_selection_by_subnet_cleanup() { cleanup_tap } @@ -305,7 +326,7 @@ atf_init_test_cases() atf_add_test_case loopback_and_network_routes_on_nondefault_fib atf_add_test_case default_route_with_multiple_fibs_on_same_subnet atf_add_test_case subnet_route_with_multiple_fibs_on_same_subnet - atf_add_test_case udp_dontroute + atf_add_test_case src_addr_selection_by_subnet } # Looks up one or more fibs from the configuration data and validates them.
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