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* [PATCH net-next v2] selftests: forwarding: lib: rewrite processing of command line arguments
@ 2026-04-07 10:20 Ioana Ciornei
  2026-04-07 12:57 ` Petr Machata
  0 siblings, 1 reply; 2+ messages in thread
From: Ioana Ciornei @ 2026-04-07 10:20 UTC (permalink / raw)
  To: netdev
  Cc: Andrew Lunn, David S. Miller, Eric Dumazet, Jakub Kicinski,
	Paolo Abeni, Simon Horman, linux-kernel, petrm, willemb,
	linux-kselftest, Shuah Khan, Hangbin Liu

The piece of code which processes the command line arguments and
populates NETIFS based on them is really unobvious. Rewrite it so that
the intention is clear and the code is easy to follow.

Suggested-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
Changes in v2:
- added back 'count=0'

 tools/testing/selftests/net/forwarding/lib.sh | 21 ++++++++++---------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index d8cc4c64148d..d2bdbff68075 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -467,17 +467,18 @@ if [ "${DRIVER_TEST_CONFORMANT}" = "yes" ]; then
 	TARGETS[$remote_netif]="$REMOTE_TYPE:$REMOTE_ARGS"
 else
 	count=0
+	# Prime NETIFS from the command line, but retain if none given.
+	if [[ $# -gt 0 ]]; then
+		unset NETIFS
+		declare -A NETIFS
 
-	while [[ $# -gt 0 ]]; do
-		if [[ "$count" -eq "0" ]]; then
-			unset NETIFS
-			declare -A NETIFS
-		fi
-		count=$((count + 1))
-		NETIFS[p$count]="$1"
-		TARGETS[$1]="local:"
-		shift
-	done
+		while [[ $# -gt 0 ]]; do
+			count=$((count + 1))
+			NETIFS[p$count]="$1"
+			TARGETS[$1]="local:"
+			shift
+		done
+	fi
 fi
 
 ##############################################################################
-- 
2.25.1


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2026-04-07 10:20 [PATCH net-next v2] selftests: forwarding: lib: rewrite processing of command line arguments Ioana Ciornei
2026-04-07 12:57 ` Petr Machata

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