From nobody Tue May 14 05:47:34 2024 Received: from smtp-fw-80009.amazon.com (smtp-fw-80009.amazon.com [99.78.197.220]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A63711339B6 for ; Wed, 14 Feb 2024 19:54:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=99.78.197.220 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707940464; cv=none; b=ohNJuvzdL3+6NnRCrPyTKddgeAiyDC0HZG9a1JYO8t0UcFKXg9hXCG566yAalxXo7UJizDuAGsSkhnfbBI0/P1JP0uFTb6Dj1YJrNUx9+JbwBPIo1yuAd7I0zIOoq0eP30aiBvtA97vfUe2smWwwfPY5YWRnNZ1KKu4ordM9XEU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707940464; c=relaxed/simple; bh=pX5ktANLCNHhzCAQMMNXkAAqI+3XxyypNCoWVaVyTY8=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=svFUrwEcuQFMMfxiIWc3fRUANN4PtLUTfN7jUfGL88B2zn5jJiJ63vcfMnMWl8eAgg9PObyLTE8l3eQBxfqJ+MveJE6fzLdvUzP7K7XEQBI6VqyTdrDoeUWPq1EeW8FLi7ZGuoDA/0LzOX2M/bDLxu8JvF3EoV7Jos6q3dLny9E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com; spf=pass smtp.mailfrom=amazon.co.jp; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b=bBAEB9XS; arc=none smtp.client-ip=99.78.197.220 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.co.jp Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="bBAEB9XS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1707940462; x=1739476462; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=m2Q4OpjpGBz9kVmtpoHuc0YezpxFLS/C2T7bgx3/2Rs=; b=bBAEB9XSdyf/bm3bMMwTG6zHY3IWoDdJ3lFiM5HR0biDaYGVZVzl6cmH GldFkoUAhOVgd8nHVkHwhCnOEXtA51tZ3EUwGt+58A+NXu8E9BNV3f32y G3nsI7SEyUUarl+5qNVVOk+KLSXnOA2G7VWoWVAZHjAcxXUC3PjdXuIlK M=; X-IronPort-AV: E=Sophos;i="6.06,160,1705363200"; d="scan'208";a="66063691" Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev) ([10.25.36.210]) by smtp-border-fw-80009.pdx80.corp.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Feb 2024 19:54:20 +0000 Received: from EX19MTAUWC002.ant.amazon.com [10.0.7.35:1991] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.34.156:2525] with esmtp (Farcaster) id b23fa01d-caf8-4308-b77a-06c46f123499; Wed, 14 Feb 2024 19:54:20 +0000 (UTC) X-Farcaster-Flow-ID: b23fa01d-caf8-4308-b77a-06c46f123499 Received: from EX19D004ANA001.ant.amazon.com (10.37.240.138) by EX19MTAUWC002.ant.amazon.com (10.250.64.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 14 Feb 2024 19:54:20 +0000 Received: from 88665a182662.ant.amazon.com (10.187.170.9) by EX19D004ANA001.ant.amazon.com (10.37.240.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Wed, 14 Feb 2024 19:54:16 +0000 From: Kuniyuki Iwashima To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthieu Baerts , Mat Martineau , Wenjia Zhang , Jan Karcher , Wen Gu , Tony Lu , "D . Wythe" CC: Kuniyuki Iwashima , Kuniyuki Iwashima , , , , Gerd Bayer Subject: [PATCH v2 net-next] net: Deprecate SO_DEBUG and reclaim SOCK_DBG bit. Date: Wed, 14 Feb 2024 11:54:07 -0800 Message-ID: <20240214195407.3175-1-kuniyu@amazon.com> X-Mailer: git-send-email 2.30.2 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: EX19D046UWA002.ant.amazon.com (10.13.139.39) To EX19D004ANA001.ant.amazon.com (10.37.240.138) Content-Type: text/plain; charset="utf-8" Recently, commit 8e5443d2b866 ("net: remove SOCK_DEBUG leftovers") removed the last users of SOCK_DEBUG(), and commit b1dffcf0da22 ("net: remove SOCK_DEBUG macro") removed the macro. Now is the time to deprecate the oldest socket option. Note that setsockopt(SO_DEBUG) is moved not to acquire lock_sock(). Reviewed-by: Gerd Bayer Signed-off-by: Kuniyuki Iwashima Reviewed-by: Matthieu Baerts (NGI0) --- v2: * Move setsockopt(SO_DEBUG) code not to acquire lock_sock(). v1: https://lore.kernel.org/netdev/20240213223135.85957-1-kuniyu@amazon.com/ --- include/net/sock.h | 1 - net/core/sock.c | 14 +++++++------- net/mptcp/sockopt.c | 8 +------- net/smc/af_smc.c | 5 ++--- 4 files changed, 10 insertions(+), 18 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index a9d99a9c583f..e20d55a36f9c 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -909,7 +909,6 @@ enum sock_flags { SOCK_TIMESTAMP, SOCK_ZAPPED, SOCK_USE_WRITE_QUEUE, /* whether to call sk->sk_write_space in sock_wfree= */ - SOCK_DBG, /* %SO_DEBUG setting */ SOCK_RCVTSTAMP, /* %SO_TIMESTAMP setting */ SOCK_RCVTSTAMPNS, /* %SO_TIMESTAMPNS setting */ SOCK_LOCALROUTE, /* route locally only, %SO_DONTROUTE setting */ diff --git a/net/core/sock.c b/net/core/sock.c index 88bf810394a5..c4c406f4742e 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1115,6 +1115,11 @@ int sk_setsockopt(struct sock *sk, int level, int op= tname, =20 /* handle options which do not require locking the socket. */ switch (optname) { + case SO_DEBUG: + /* deprecated, but kept for compatibility */ + if (val && !sockopt_capable(CAP_NET_ADMIN)) + ret =3D -EACCES; + return 0; case SO_PRIORITY: if ((val >=3D 0 && val <=3D 6) || sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) || @@ -1193,12 +1198,6 @@ int sk_setsockopt(struct sock *sk, int level, int op= tname, sockopt_lock_sock(sk); =20 switch (optname) { - case SO_DEBUG: - if (val && !sockopt_capable(CAP_NET_ADMIN)) - ret =3D -EACCES; - else - sock_valbool_flag(sk, SOCK_DBG, valbool); - break; case SO_REUSEADDR: sk->sk_reuse =3D (valbool ? SK_CAN_REUSE : SK_NO_REUSE); break; @@ -1619,7 +1618,8 @@ int sk_getsockopt(struct sock *sk, int level, int opt= name, =20 switch (optname) { case SO_DEBUG: - v.val =3D sock_flag(sk, SOCK_DBG); + /* deprecated. */ + v.val =3D 0; break; =20 case SO_DONTROUTE: diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index da37e4541a5d..31d09009332a 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -80,9 +80,6 @@ static void mptcp_sol_socket_sync_intval(struct mptcp_soc= k *msk, int optname, in bool slow =3D lock_sock_fast(ssk); =20 switch (optname) { - case SO_DEBUG: - sock_valbool_flag(ssk, SOCK_DBG, !!val); - break; case SO_KEEPALIVE: if (ssk->sk_prot->keepalive) ssk->sk_prot->keepalive(ssk, !!val); @@ -183,7 +180,6 @@ static int mptcp_setsockopt_sol_socket_int(struct mptcp= _sock *msk, int optname, case SO_KEEPALIVE: mptcp_sol_socket_sync_intval(msk, optname, val); return 0; - case SO_DEBUG: case SO_MARK: case SO_PRIORITY: case SO_SNDBUF: @@ -329,7 +325,6 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_soc= k *msk, int optname, case SO_RCVBUFFORCE: case SO_MARK: case SO_INCOMING_CPU: - case SO_DEBUG: case SO_TIMESTAMP_OLD: case SO_TIMESTAMP_NEW: case SO_TIMESTAMPNS_OLD: @@ -363,6 +358,7 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_soc= k *msk, int optname, case SO_WIFI_STATUS: case SO_NOFCS: case SO_SELECT_ERR_QUEUE: + case SO_DEBUG: /* deprecated */ return 0; } =20 @@ -1458,8 +1454,6 @@ static void sync_socket_options(struct mptcp_sock *ms= k, struct sock *ssk) sk_dst_reset(ssk); } =20 - sock_valbool_flag(ssk, SOCK_DBG, sock_flag(sk, SOCK_DBG)); - if (inet_csk(sk)->icsk_ca_ops !=3D inet_csk(ssk)->icsk_ca_ops) tcp_set_congestion_control(ssk, msk->ca_name, false, true); __tcp_sock_set_cork(ssk, !!msk->cork); diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 66763c74ab76..062e16a2766a 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -445,7 +445,6 @@ static int smc_bind(struct socket *sock, struct sockadd= r *uaddr, (1UL << SOCK_LINGER) | \ (1UL << SOCK_BROADCAST) | \ (1UL << SOCK_TIMESTAMP) | \ - (1UL << SOCK_DBG) | \ (1UL << SOCK_RCVTSTAMP) | \ (1UL << SOCK_RCVTSTAMPNS) | \ (1UL << SOCK_LOCALROUTE) | \ @@ -511,8 +510,8 @@ static void smc_copy_sock_settings_to_clc(struct smc_so= ck *smc) =20 #define SK_FLAGS_CLC_TO_SMC ((1UL << SOCK_URGINLINE) | \ (1UL << SOCK_KEEPOPEN) | \ - (1UL << SOCK_LINGER) | \ - (1UL << SOCK_DBG)) + (1UL << SOCK_LINGER)) + /* copy only settings and flags relevant for smc from clc to smc socket */ static void smc_copy_sock_settings_to_smc(struct smc_sock *smc) { --=20 2.30.2