From: Hangbin Liu <liuhangbin@gmail.com>
To: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Shuah Khan <shuah@kernel.org>, Petr Machata <petrm@nvidia.com>,
Hangbin Liu <liuhangbin@gmail.com>,
Benjamin Poirier <bpoirier@nvidia.com>,
Ido Schimmel <idosch@nvidia.com>, Jiri Pirko <jiri@resnulli.us>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
Jaehee Park <jhpark1013@gmail.com>,
linux-kselftest@vger.kernel.org
Subject: [PATCHv2 net] selftests/net: use tc rule to filter the na packet
Date: Fri, 17 May 2024 09:03:27 +0800 [thread overview]
Message-ID: <20240517010327.2631319-1-liuhangbin@gmail.com> (raw)
Test arp_ndisc_untracked_subnets use tcpdump to filter the unsolicited
and untracked na messages. It set -e before calling tcpdump. But if
tcpdump filters 0 packet, it will return none zero, and cause the script
to exit.
Instead of using slow tcpdump to capture packets, let's using tc rule
to filter out the na message.
At the same time, fix function setup_v6 which only needs one parameter.
Move all the related helpers from forwarding lib.sh to net lib.sh.
Fixes: 0ea7b0a454ca ("selftests: net: arp_ndisc_untracked_subnets: test for arp_accept and accept_untracked_na")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
v2: rebase to latest net main code. no update,
v1: https://lore.kernel.org/netdev/20240514071130.2121042-1-liuhangbin@gmail.com
---
.../net/arp_ndisc_untracked_subnets.sh | 53 ++++++-----------
tools/testing/selftests/net/forwarding/lib.sh | 58 -------------------
tools/testing/selftests/net/lib.sh | 58 +++++++++++++++++++
3 files changed, 75 insertions(+), 94 deletions(-)
diff --git a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
index a40c0e9bd023..eef5cbf6eecc 100755
--- a/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
+++ b/tools/testing/selftests/net/arp_ndisc_untracked_subnets.sh
@@ -73,25 +73,19 @@ setup_v6() {
# namespaces. veth0 is veth-router, veth1 is veth-host.
# first, set up the inteface's link to the namespace
# then, set the interface "up"
- ip -6 -netns ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
- type veth peer name ${HOST_INTF}
-
- ip -6 -netns ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
- ip -6 -netns ${ROUTER_NS_V6} link set dev ${HOST_INTF} netns \
- ${HOST_NS_V6}
+ ip -n ${ROUTER_NS_V6} link add name ${ROUTER_INTF} \
+ type veth peer name ${HOST_INTF} netns ${HOST_NS_V6}
- ip -6 -netns ${HOST_NS_V6} link set dev ${HOST_INTF} up
- ip -6 -netns ${ROUTER_NS_V6} addr add \
- ${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} dev ${ROUTER_INTF} nodad
+ # Add tc rule to filter out host na message
+ tc -n ${ROUTER_NS_V6} qdisc add dev ${ROUTER_INTF} clsact
+ tc -n ${ROUTER_NS_V6} filter add dev ${ROUTER_INTF} \
+ ingress protocol ipv6 pref 1 handle 101 \
+ flower src_ip ${HOST_ADDR_V6} ip_proto icmpv6 type 136 skip_hw action pass
HOST_CONF=net.ipv6.conf.${HOST_INTF}
ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.ndisc_notify=1
ip netns exec ${HOST_NS_V6} sysctl -qw ${HOST_CONF}.disable_ipv6=0
- ip -6 -netns ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
- dev ${HOST_INTF}
-
ROUTER_CONF=net.ipv6.conf.${ROUTER_INTF}
-
ip netns exec ${ROUTER_NS_V6} sysctl -w \
${ROUTER_CONF}.forwarding=1 >/dev/null 2>&1
ip netns exec ${ROUTER_NS_V6} sysctl -w \
@@ -99,6 +93,13 @@ setup_v6() {
ip netns exec ${ROUTER_NS_V6} sysctl -w \
${ROUTER_CONF}.accept_untracked_na=${accept_untracked_na} \
>/dev/null 2>&1
+
+ ip -n ${ROUTER_NS_V6} link set dev ${ROUTER_INTF} up
+ ip -n ${HOST_NS_V6} link set dev ${HOST_INTF} up
+ ip -n ${ROUTER_NS_V6} addr add ${ROUTER_ADDR_V6}/${PREFIX_WIDTH_V6} \
+ dev ${ROUTER_INTF} nodad
+ ip -n ${HOST_NS_V6} addr add ${HOST_ADDR_V6}/${PREFIX_WIDTH_V6} \
+ dev ${HOST_INTF}
set +e
}
@@ -162,26 +163,6 @@ arp_test_gratuitous_combinations() {
arp_test_gratuitous 2 1
}
-cleanup_tcpdump() {
- set -e
- [[ ! -z ${tcpdump_stdout} ]] && rm -f ${tcpdump_stdout}
- [[ ! -z ${tcpdump_stderr} ]] && rm -f ${tcpdump_stderr}
- tcpdump_stdout=
- tcpdump_stderr=
- set +e
-}
-
-start_tcpdump() {
- set -e
- tcpdump_stdout=`mktemp`
- tcpdump_stderr=`mktemp`
- ip netns exec ${ROUTER_NS_V6} timeout 15s \
- tcpdump --immediate-mode -tpni ${ROUTER_INTF} -c 1 \
- "icmp6 && icmp6[0] == 136 && src ${HOST_ADDR_V6}" \
- > ${tcpdump_stdout} 2> /dev/null
- set +e
-}
-
verify_ndisc() {
local accept_untracked_na=$1
local same_subnet=$2
@@ -222,8 +203,9 @@ ndisc_test_untracked_advertisements() {
HOST_ADDR_V6=2001:db8:abcd:0012::3
fi
fi
- setup_v6 $1 $2
- start_tcpdump
+ setup_v6 $1
+ slowwait_for_counter 15 1 \
+ tc_rule_handle_stats_get "dev ${ROUTER_INTF} ingress" 101 ".packets" "-n ${ROUTER_NS_V6}"
if verify_ndisc $1 $2; then
printf " TEST: %-60s [ OK ]\n" "${test_msg[*]}"
@@ -231,7 +213,6 @@ ndisc_test_untracked_advertisements() {
printf " TEST: %-60s [FAIL]\n" "${test_msg[*]}"
fi
- cleanup_tcpdump
cleanup_v6
set +e
}
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 112c85c35092..eabbdf00d8ca 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -129,14 +129,6 @@ fi
source "$net_forwarding_dir/../lib.sh"
-# timeout in seconds
-slowwait()
-{
- local timeout_sec=$1; shift
-
- loopy_wait "sleep 0.1" "$((timeout_sec * 1000))" "$@"
-}
-
##############################################################################
# Sanity checks
@@ -678,33 +670,6 @@ wait_for_trap()
"$@" | grep -q trap
}
-until_counter_is()
-{
- local expr=$1; shift
- local current=$("$@")
-
- echo $((current))
- ((current $expr))
-}
-
-busywait_for_counter()
-{
- local timeout=$1; shift
- local delta=$1; shift
-
- local base=$("$@")
- busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
-slowwait_for_counter()
-{
- local timeout=$1; shift
- local delta=$1; shift
-
- local base=$("$@")
- slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
-}
-
setup_wait_dev()
{
local dev=$1; shift
@@ -1023,29 +988,6 @@ link_stats_rx_errors_get()
link_stats_get $1 rx errors
}
-tc_rule_stats_get()
-{
- local dev=$1; shift
- local pref=$1; shift
- local dir=$1; shift
- local selector=${1:-.packets}; shift
-
- tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
- | jq ".[1].options.actions[].stats$selector"
-}
-
-tc_rule_handle_stats_get()
-{
- local id=$1; shift
- local handle=$1; shift
- local selector=${1:-.packets}; shift
- local netns=${1:-""}; shift
-
- tc $netns -j -s filter show $id \
- | jq ".[] | select(.options.handle == $handle) | \
- .options.actions[0].stats$selector"
-}
-
ethtool_stats_get()
{
local dev=$1; shift
diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index 72b191e4e064..edc030e81a46 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -91,6 +91,41 @@ busywait()
loopy_wait : "$timeout_ms" "$@"
}
+# timeout in seconds
+slowwait()
+{
+ local timeout_sec=$1; shift
+
+ loopy_wait "sleep 0.1" "$((timeout_sec * 1000))" "$@"
+}
+
+until_counter_is()
+{
+ local expr=$1; shift
+ local current=$("$@")
+
+ echo $((current))
+ ((current $expr))
+}
+
+busywait_for_counter()
+{
+ local timeout=$1; shift
+ local delta=$1; shift
+
+ local base=$("$@")
+ busywait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
+slowwait_for_counter()
+{
+ local timeout=$1; shift
+ local delta=$1; shift
+
+ local base=$("$@")
+ slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@"
+}
+
cleanup_ns()
{
local ns=""
@@ -150,3 +185,26 @@ setup_ns()
done
NS_LIST="$NS_LIST $ns_list"
}
+
+tc_rule_stats_get()
+{
+ local dev=$1; shift
+ local pref=$1; shift
+ local dir=$1; shift
+ local selector=${1:-.packets}; shift
+
+ tc -j -s filter show dev $dev ${dir:-ingress} pref $pref \
+ | jq ".[1].options.actions[].stats$selector"
+}
+
+tc_rule_handle_stats_get()
+{
+ local id=$1; shift
+ local handle=$1; shift
+ local selector=${1:-.packets}; shift
+ local netns=${1:-""}; shift
+
+ tc $netns -j -s filter show $id \
+ | jq ".[] | select(.options.handle == $handle) | \
+ .options.actions[0].stats$selector"
+}
--
2.43.0
next reply other threads:[~2024-05-17 1:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-17 1:03 Hangbin Liu [this message]
2024-05-17 9:14 ` [PATCHv2 net] selftests/net: use tc rule to filter the na packet Simon Horman
2024-05-17 19:04 ` Jakub Kicinski
2024-05-17 19:16 ` Simon Horman
2024-05-21 11:30 ` patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240517010327.2631319-1-liuhangbin@gmail.com \
--to=liuhangbin@gmail.com \
--cc=bpoirier@nvidia.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=idosch@nvidia.com \
--cc=jhpark1013@gmail.com \
--cc=jiri@resnulli.us \
--cc=kuba@kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=petrm@nvidia.com \
--cc=shuah@kernel.org \
--cc=vladimir.oltean@nxp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.