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Tue, 23 Apr 2024 00:22:12 -0700 (PDT) Received: from KERNELXING-MB0.tencent.com ([43.132.141.25]) by smtp.gmail.com with ESMTPSA id w19-20020a170902c79300b001e0c956f0dcsm9330114pla.213.2024.04.23.00.22.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Apr 2024 00:22:12 -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, horms@kernel.org Cc: mptcp@lists.linux.dev, netdev@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kerneljasonxing@gmail.com, Jason Xing Subject: [PATCH net-next v8 6/7] mptcp: introducing a helper into active reset logic Date: Tue, 23 Apr 2024 15:21:36 +0800 Message-Id: <20240423072137.65168-7-kerneljasonxing@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20240423072137.65168-1-kerneljasonxing@gmail.com> References: <20240423072137.65168-1-kerneljasonxing@gmail.com> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Matthieu Baerts (NGI0) --- 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) =20 slow =3D lock_sock_fast(tcp_sk); if (tcp_sk->sk_state !=3D 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 bbcb8c068aae..d40ad4a2f1b8 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -12,6 +12,7 @@ #include #include #include +#include =20 #include "mptcp_pm_gen.h" =20 @@ -609,6 +610,16 @@ sk_rst_convert_mptcp_reason(u32 reason) } } =20 +static inline void +mptcp_send_active_reset_reason(struct sock *sk) +{ + struct mptcp_subflow_context *subflow =3D mptcp_subflow_ctx(sk); + enum sk_rst_reason reason; + + reason =3D sk_rst_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 fb7abf2d01ca..97ec44d1df30 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -20,7 +20,6 @@ #include #endif #include -#include =20 #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); =20 - 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 =3D 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; } --=20 2.37.3