From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-vs2-f42.google.com (mail-vs2-f42.google.com [74.125.227.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB23D3D9DDE for ; Sun, 20 Sep 2026 05:47:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789883245; cv=none; b=UDo/IG+616MJvvV3jbdbJlYvnIL+ZwXR8b3sJp/tWWN9NrSN4IkUl+A7l+JNuWLMSGYYa+2FQqhTQYUHxrlVssVRb+mWHQreEXGCTMl805SpyT4kNp/BvMx/8UhZ0UNkwYgZsVkma3ji6idhmtpVczciLW4KR3pDcBQNV54UsvA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789883245; c=relaxed/simple; bh=vGxo+U1sJMCVsq3sDI08zPDza2WpfMA+ZZBuxg0Rgp4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PM1UvQMj2qE6oWX8ryB5+NSZbX1D6ENWVyBIAqheHt4HOk/gRYBlMR0Wi0d5oAIbiTT9or+Tcrqo24C3Ftx5G4W+3YV4E9BR+C05dazWmaOcMG1c2ml1HSj+H99vlrT7aGq+V9KWJVmy808RoIirf3Q3dkunsoZVzlj7s7N633U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=TEQulDE3; arc=none smtp.client-ip=74.125.227.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TEQulDE3" Received: by mail-vs2-f42.google.com with SMTP id 71dfb90a1353d-5c98e1942dfso1434874e0c.3 for ; Sat, 19 Sep 2026 22:47:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1789883243; x=1790488043; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=+xdh7oWEQ9m8Qy+E3UVjKRIovBOhuQDCeQrchOYtk/I=; b=TEQulDE3nl8kiz1wCPMXCgEJbUO+jVTyndy00etcWmK+1D3JdkS8dv3/IvjMzs3lfY VtkEiGed3v/fAZ5gLLH5ggs6wtZGQiVPFCf9H9QDczWG4lL/1fIIB5Hpe8SFi/Lq96fs JLmz1FKG8Gv88sRHjiWSUiErOmw3ABuS+ExW4v0rC6NojLc/4nK9DJlNDuJJKsjzGePD 0duUl17ynITUWEZ7jm2jkw6u3pirvUiQ2x+D4Nbimr8rX5FhZ/cCvjjjq5JoCkH/fyfV wEvC/uhsHgsxpGVxk5jYYNVRtBo5EFxHd9CTPx29iW/IUkXFC65TrVpkJVh43tsMg1jw loUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789883243; x=1790488043; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=+xdh7oWEQ9m8Qy+E3UVjKRIovBOhuQDCeQrchOYtk/I=; b=DJb6a6pMHGcCJkbB3AIvYOVMcJ2eHuOqGhIGmUXwk/As74qLt4zpt2OS5q1pOD3On3 dUVlIkAM+os/F0SLgm/bIJln7lH38u2PBuGgtUFHlvf+Bgks/YN8K3SC6MusLb1nSddY cHeN1o5qHogI5jNwsxT6sgD4Po0z+H/2SrxEAlfrNGue/aPFF+DGDDc1hX4d1B2pBVyK 3SMLemsDyjBovJ0YWEMduCG9iUWxhAy1iwcGojeLqFF6/eOo6KoYRy/hDain/+B5p4PH a3Bdl0t1+frBY97zRAc+CqZR9LrFK5RkUIvcqsAZtuoSQnlIJojjx7O0Hd2yuM8H9Y1Q 7cfg== X-Forwarded-Encrypted: i=1; AKwUvBx1qCVVdOYosooNBwP5XEjyi7iR/AEpKZzV3R+mBAzaU/msOlfnmfYh5jtE9w2de0WqoS5hWD76/9vHlT7sUn8=@vger.kernel.org X-Gm-Message-State: AFuF++n1AQk6CeH3WJS5UiI1DH7v7ujJO0o5WvOU6xKOeSEl+ZvDkSTl k2gcLbR+D8adC4tubNnpXOJTDFjZqWw4Hxt48lgU8nD2w+mXJHNrFzVV X-Gm-Gg: AYBFou2s3RpGbCn8zGJAQyorZF6m8noi8BpfBukglQpKb0wijCDH1BPdqWrEHAqOKcI vNUENQukQFjYTRmb6uceEXzulO5+oj8JFZDcd4bc56/DPwlqprJAvdibf6ngpecfyHazRecPXEd FFLlBWFBzK1wnGmKz/rDePICwt8tDeGWsNirY8AaSJ8KjQHc7SHlIeNl/9ey0uG3OPPq9dIY9p1 7y0gk2qSeLOszkiWf7vqxVw8PySAsJaYhjeM2w+Mzr4LPjGEevCrKpQNtd9opw4qGijXWBRRQcd HZf/CxhoK19gyEwCSV6gfJlkizWyJlyZSZzBf/RAaWcN9pEKs9QC+jfD0yNnIOVHtS+sfuhcCbk lVyaAY5xbsTidP/hgXH3yMtKijKjLPFEIfY3NHtPlvDYyDn/fqiGUydv+OYZbKNfVwUsQxewU0G G2jJ49vTZiyL+XXAAflQhHlRgGcM7I/sxVfmlCwsRGJGdW7/jxbZqbZ8sJ6hynn/s= X-Received: by 2002:a05:6102:158c:b0:7a5:2427:ecc1 with SMTP id ada2fe7eead31-7a55ce7d127mr3164716137.19.1789883242711; Sat, 19 Sep 2026 22:47:22 -0700 (PDT) Received: from adriano ([190.215.95.120]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-7a6aa41dac0sm4521732137.2.2026.09.19.22.47.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2026 22:47:21 -0700 (PDT) From: Adriano Cordova To: Simon Horman , Julian Anastasov , Pablo Neira Ayuso Cc: Florian Westphal , netfilter-devel@vger.kernel.org, lvs-devel@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 nf-next 2/3] ipvs: tcp: enable per-connection secure_tcp in state machine Date: Sun, 20 Sep 2026 02:47:07 -0300 Message-ID: <20260920054708.988867-3-adrianox@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260920054708.988867-1-adrianox@gmail.com> References: <20260920054708.988867-1-adrianox@gmail.com> Precedence: bulk X-Mailing-List: netfilter-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Let set_tcp_state select tcp_states_dos when the connection carries IP_VS_CONN_F_SECURE_TCP, otherwise keep using the global pd->tcp_state_table (the netns default / or if nomem). Signed-off-by: Adriano Cordova --- (no changes since v1) net/netfilter/ipvs/ip_vs_proto_tcp.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c index fec0e8b47b71..3b9a2c8e9a52 100644 --- a/net/netfilter/ipvs/ip_vs_proto_tcp.c +++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c @@ -451,11 +451,10 @@ static void tcp_timeout_change(struct ip_vs_proto_data *pd, int flags) int on = (flags & 1); /* secure_tcp */ /* - ** FIXME: change secure_tcp to independent sysctl var - ** or make it per-service or per-app because it is valid - ** for most if not for all of the applications. Something - ** like "capabilities" (flags) for each object. - */ + * This remains the netns-wide default / global floor (e.g. when + * memory pressure kicks in). Per-service hardening is now carried + * by IP_VS_CONN_F_SECURE_TCP on each connection (set_tcp_state). + */ pd->tcp_state_table = (on ? tcp_states_dos : tcp_states); } @@ -479,6 +478,7 @@ set_tcp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp, int state_idx; int new_state = IP_VS_TCP_S_CLOSE; int state_off = tcp_state_off[direction]; + const struct tcp_states_t *table; /* * Update state offset to INPUT_ONLY if necessary @@ -496,8 +496,10 @@ set_tcp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp, goto tcp_state_out; } - new_state = - pd->tcp_state_table[state_off+state_idx].next_state[cp->state]; + table = pd->tcp_state_table; + if (cp->flags & IP_VS_CONN_F_SECURE_TCP) + table = tcp_states_dos; + new_state = table[state_off + state_idx].next_state[cp->state]; tcp_state_out: if (new_state != cp->state) { -- 2.51.0