From patchwork Tue Apr 16 11:40:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Xing X-Patchwork-Id: 13631715 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (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 5473B129E8E for ; Tue, 16 Apr 2024 11:40:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713267644; cv=none; b=riWA8PkybUg4y9pHCOtI2M8Z9q6tgOzNc0PoX1vvINuWBiFbELWe+PzNW1wGBLIVJE2ruD2chXR4RoDGgNepdBKFgpWEc3QvVFfeGvgo3+gqh2t1692CL0PUx8tl1ehtVj7xGUYMB86B+X8uA8PcuOOW9C98Yf3tpqmO2+1LOiA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713267644; c=relaxed/simple; bh=9+NXcmGwyt344ac+65+IFERA0aeIWelc23La2k0MJFY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=U1fZEBxbypRsjytg808UKgWHj2HSWH3KWTyDtp1AAdZLUMG2ZLVRDogBeaneqp3h2stuSDfgjekMFSIRRlqGXeAKTf2r5eIcCxt0ofK70pOyZnpkHkb9zHWG8Rck5W/GzOmVMTriECUiJvhCzTbIWZvmBh4hqPnlb8AB08eoOps= 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=DtTBpWoO; arc=none smtp.client-ip=209.85.210.175 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="DtTBpWoO" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-6ed9fc77bbfso3306397b3a.1 for ; Tue, 16 Apr 2024 04:40:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1713267642; x=1713872442; darn=lists.linux.dev; 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; bh=UXPsQyON3TFtDQR7bYganuNlYsXI10vIvS6F+4BgaXc=; b=DtTBpWoO7RVyUt86dSa3yA6w5NK4urdLLlG+PLwKCb/4u3NeIdum19qElSTygW5FY0 6HQhr1uLXAgZ4o74WgXw1z492wUpeMQ5c9bo/GeKDUuPEl56nTW3tRskN/kRSZfD6GhS DX+fxtpYMKvfMvz3uBhOc3tNPaNpQ4ra32ZA6qpUN2iHtUAdbeEQbbKCe4DHAJXc3M7b c0LPxogPX7WBwK2CUnciBOpEroM82zNzQPQC1FtzcpGQMk+J+YXFvLdNjkjJagsn5Vxd xppO3DFb1EnRNY4PcxfNM7PZhydSII3nwIaSbBIyKanbtN11cTAGMt9Wm+2UxYM1AShR hhvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713267642; x=1713872442; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=UXPsQyON3TFtDQR7bYganuNlYsXI10vIvS6F+4BgaXc=; b=Hic6+skmlIa/PA8tVNeUzBS2Kh2uXg4bqZmPURcDdR49JHMmfAdhM5gQLJwUAtzx4s i1X9UOmNTp4d0xM1I10vjfqtnjS1P8jyoC9m75otvPcuoZJKjE6AFc7zR07KSqMdP8e/ 0WPhzg5rJhlN3U9UWp74YHljbvYj7g5Nr73lwL+JX8CTOviAcgb/8n+TwMTrVe1BBjHW hmVS0ANQ2c2at+ny3H6tqpQfL4Hquv2osjbchKP1aS+v7cZMp1GrOXeTLZ0yPthP4gkN Z5KM/1c3YQGLsl4XIL5WQog25d5qlNFduJbRUxWgqYDXM6rFcD51szhe7fl4EjQXWxM1 QNcg== X-Gm-Message-State: AOJu0Yw1fWosUZJBDLt0lKjAQAR4n6hfIsiyHYYn5D5ZdXJZKm+kB2AM ztFPD8nVvgpNJAkZcy6fApdLdITaGEfgqt+OPcxzKhqIaaEOH1go X-Google-Smtp-Source: AGHT+IEm5A6jT+QGQHERvvGqADXMfEefRQUAVhU84i4vmIlcqJfSQBMWf2rQhxtQGSf4Fu0MKDeoIw== X-Received: by 2002:a05:6a20:3250:b0:1a3:8e1d:16b8 with SMTP id hm16-20020a056a20325000b001a38e1d16b8mr10410698pzc.28.1713267642554; Tue, 16 Apr 2024 04:40:42 -0700 (PDT) Received: from KERNELXING-MB0.tencent.com ([43.132.141.24]) by smtp.gmail.com with ESMTPSA id a21-20020aa78655000000b006e6c16179dbsm8862045pfo.24.2024.04.16.04.40.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Apr 2024 04:40:42 -0700 (PDT) From: Jason Xing To: edumazet@google.com, dsahern@kernel.org, matttbe@kernel.org, martineau@kernel.org, geliang@kernel.org, kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, atenart@kernel.org Cc: mptcp@lists.linux.dev, netdev@vger.kernel.org, kerneljasonxing@gmail.com, Jason Xing Subject: [PATCH net-next v5 6/7] mptcp: introducing a helper into active reset logic Date: Tue, 16 Apr 2024 19:40:02 +0800 Message-Id: <20240416114003.62110-7-kerneljasonxing@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240416114003.62110-1-kerneljasonxing@gmail.com> References: <20240416114003.62110-1-kerneljasonxing@gmail.com> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jason Xing Since we have mapped every mptcp reset reason definition in enum sk_rst_reason, introducing a new helper can cover some missing places where we have already set the subflow->reset_reason. Note: using SK_RST_REASON_NOT_SPECIFIED is the same as SK_RST_REASON_MPTCP_RST_EUNSPEC. They are both unknown. So we can convert it directly. Suggested-by: Paolo Abeni Signed-off-by: Jason Xing --- Link: https://lore.kernel.org/all/2d3ea199eef53cf6a0c48e21abdee0eefbdee927.camel@redhat.com/ --- net/mptcp/protocol.c | 4 +--- net/mptcp/protocol.h | 11 +++++++++++ net/mptcp/subflow.c | 6 ++---- 3 files changed, 14 insertions(+), 7 deletions(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 065967086492..4b13ca362efa 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -21,7 +21,6 @@ #endif #include #include -#include #include #include "protocol.h" #include "mib.h" @@ -2570,8 +2569,7 @@ static void mptcp_check_fastclose(struct mptcp_sock *msk) slow = lock_sock_fast(tcp_sk); if (tcp_sk->sk_state != TCP_CLOSE) { - tcp_send_active_reset(tcp_sk, GFP_ATOMIC, - SK_RST_REASON_NOT_SPECIFIED); + mptcp_send_active_reset_reason(tcp_sk); tcp_set_state(tcp_sk, TCP_CLOSE); } unlock_sock_fast(tcp_sk, slow); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index fdfa843e2d88..82ef2f42a1bc 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -12,6 +12,7 @@ #include #include #include +#include #include "mptcp_pm_gen.h" @@ -581,6 +582,16 @@ mptcp_subflow_ctx_reset(struct mptcp_subflow_context *subflow) WRITE_ONCE(subflow->local_id, -1); } +static inline void +mptcp_send_active_reset_reason(struct sock *sk) +{ + struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); + enum sk_rst_reason reason; + + reason = convert_mptcp_reason(subflow->reset_reason); + tcp_send_active_reset(sk, GFP_ATOMIC, reason); +} + static inline u64 mptcp_subflow_get_map_offset(const struct mptcp_subflow_context *subflow) { diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index bde4a7fdee82..4783d558863c 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -20,7 +20,6 @@ #include #endif #include -#include #include "protocol.h" #include "mib.h" @@ -424,7 +423,7 @@ void mptcp_subflow_reset(struct sock *ssk) /* must hold: tcp_done() could drop last reference on parent */ sock_hold(sk); - tcp_send_active_reset(ssk, GFP_ATOMIC, SK_RST_REASON_NOT_SPECIFIED); + mptcp_send_active_reset_reason(ssk); tcp_done(ssk); if (!test_and_set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &mptcp_sk(sk)->flags)) mptcp_schedule_work(sk); @@ -1362,8 +1361,7 @@ static bool subflow_check_data_avail(struct sock *ssk) tcp_set_state(ssk, TCP_CLOSE); while ((skb = skb_peek(&ssk->sk_receive_queue))) sk_eat_skb(ssk, skb); - tcp_send_active_reset(ssk, GFP_ATOMIC, - SK_RST_REASON_NOT_SPECIFIED); + mptcp_send_active_reset_reason(ssk); WRITE_ONCE(subflow->data_avail, false); return false; }