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selftests: Lowest IPv4 address in a subnet is valid

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Expect the lowest IPv4 address in a subnet to be assignable
and addressable as a unicast (non-broadcast) address on a
local network segment.

Signed-off-by: Seth David Schoen <schoen@loyalty.org>
Suggested-by: John Gilmore <gnu@toad.com>
Acked-by: Dave Taht <dave.taht@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Seth David Schoen 2021-05-12 21:38:25 -07:00 committed by David S. Miller
parent 94c821c74b
commit 6101ca0384
1 changed files with 9 additions and 8 deletions
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17
tools/testing/selftests/net/unicast_extensions.sh
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@ -189,6 +189,15 @@ segmenttest 255.255.255.1 255.255.255.254 24 "assign and ping inside 255.255.255
route_test 240.5.6.7 240.5.6.1 255.1.2.1 255.1.2.3 24 "route between 240.5.6/24 and 255.1.2/24 (is allowed)"
route_test 0.200.6.7 0.200.38.1 245.99.101.1 245.99.200.111 16 "route between 0.200/16 and 245.99/16 (is allowed)"
#
# Test support for lowest address ending in .0
segmenttest 5.10.15.20 5.10.15.0 24 "assign and ping lowest address (/24)"
#
# Test support for lowest address not ending in .0
segmenttest 192.168.101.192 192.168.101.193 26 "assign and ping lowest address (/26)"
#
# Routing using lowest address as a gateway/endpoint
route_test 192.168.42.1 192.168.42.0 9.8.7.6 9.8.7.0 24 "routing using lowest address"
#
# ==============================================
# ==== TESTS THAT CURRENTLY EXPECT FAILURE =====
# ==============================================
@ -202,14 +211,6 @@ segmenttest 255.255.255.1 255.255.255.255 16 "assigning 255.255.255.255 (is forb
# Currently Linux does not allow this, so this should fail too
segmenttest 127.99.4.5 127.99.4.6 16 "assign and ping inside 127/8 (is forbidden)"
#
# Test support for lowest address
# Currently Linux does not allow this, so this should fail too
segmenttest 5.10.15.20 5.10.15.0 24 "assign and ping lowest address (is forbidden)"
#
# Routing using lowest address as a gateway/endpoint
# Currently Linux does not allow this, so this should fail too
route_test 192.168.42.1 192.168.42.0 9.8.7.6 9.8.7.0 24 "routing using lowest address (is forbidden)"
#
# Test support for unicast use of class D
# Currently Linux does not allow this, so this should fail too
segmenttest 225.1.2.3 225.1.2.200 24 "assign and ping class D address (is forbidden)"