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selftests: net: give more time for GRO aggregation

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[ Upstream commit 89abe628375301fedb68770644df845d49018d8b ]

The gro.sh test-case relay on the gro_flush_timeout to ensure
that all the segments belonging to any given batch are properly
aggregated.

The other end, the sender is a user-space program transmitting
each packet with a separate write syscall. A busy host and/or
stracing the sender program can make the relevant segments reach
the GRO engine after the flush timeout triggers.

Give the GRO flush timeout more slack, to avoid sporadic self-tests
failures.

Fixes: 9af771d2ec ("selftests/net: allow GRO coalesce test on veth")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Tested-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/bffec2beab3a5672dd13ecabe4fad81d2155b367.1706206101.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paolo Abeni 2024-01-25 19:09:06 +01:00 • committed by Greg Kroah-Hartman
parent 53e94ec530
commit 262caadfa9
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/net/setup_veth.sh
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@ -8,7 +8,7 @@ setup_veth_ns() {
local -r ns_mac="$4" local -r ns_mac="$4"
[[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}" [[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
echo 100000 > "/sys/class/net/${ns_dev}/gro_flush_timeout" echo 1000000 > "/sys/class/net/${ns_dev}/gro_flush_timeout"
ip link set dev "${ns_dev}" netns "${ns_name}" mtu 65535 ip link set dev "${ns_dev}" netns "${ns_name}" mtu 65535
ip -netns "${ns_name}" link set dev "${ns_dev}" up ip -netns "${ns_name}" link set dev "${ns_dev}" up