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From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	 Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <horms@kernel.org>,
	Neal Cardwell <ncardwell@google.com>,
	 Kuniyuki Iwashima <kuniyu@google.com>,
	Willem de Bruijn <willemb@google.com>,
	netdev@vger.kernel.org,  eric.dumazet@gmail.com,
	Eric Dumazet <edumazet@google.com>
Subject: [PATCH net-next] selftests/net: packetdrill: add CONFIG_MAX_SKB_FRAGS=17
Date: Tue, 24 Mar 2026 14:25:56 +0000	[thread overview]
Message-ID: <20260324142556.1844523-1-edumazet@google.com> (raw)

Before adding tests about RWIN, enforce the default linux value
for the number of fragments per skb.

With 17 fragments, sizeof(skb_shared_info) == 320.

With 45 fragments, sizeof(skb_shared_info) == 768.

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 tools/testing/selftests/net/packetdrill/config | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/net/packetdrill/config b/tools/testing/selftests/net/packetdrill/config
index c4a19a78552111df690d2c97c0f3a8abe2176ada..8c739db4752c3abaaa8862ea2aeb661a2d5f0575 100644
--- a/tools/testing/selftests/net/packetdrill/config
+++ b/tools/testing/selftests/net/packetdrill/config
@@ -1,6 +1,7 @@
 CONFIG_HZ=1000
 CONFIG_HZ_1000=y
 CONFIG_IPV6=y
+CONFIG_MAX_SKB_FRAGS=17
 CONFIG_NET_NS=y
 CONFIG_NET_SCH_FIFO=y
 CONFIG_NET_SCH_FQ=y
-- 
2.53.0.983.g0bb29b3bc5-goog


             reply	other threads:[~2026-03-24 14:26 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-24 14:25 Eric Dumazet [this message]
2026-03-24 14:53 ` [PATCH net-next] selftests/net: packetdrill: add CONFIG_MAX_SKB_FRAGS=17 Willem de Bruijn

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