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b=mr7UQfjwBOcICm6EV3tOJnYQHshvHWBUosm62EQ16n6tm1s9ccWfAfiEc3G+ZYrmDHVYfSL6/xNNpl8dWHm/41Y904crWyZYNQpW5O2xXZGH7vRVAHdnJVhpD2oDhrg82iAffkYgEIIEakcR1VMWc+RliTXU2gSxNwVEaWD309b5y1e//Hfk08tnuKjBdxdTYuiqqAYwlmbPl0dhnMxQrxnEwG0IAsCTBStTLZVh2qIHkc9IJ0wvWhTW7v5Fz/rGuxa6DiFDGTiYKYWIyMCaoY9ZG46wzRkgHJHTiksWkowkF4qlIedsLYBCI27GhO0clC+I5Hkru/8W6wXG8ngDKg==; Received: by smtp35.i.mail.ru with esmtpa (envelope-from ) id 1mpPtm-0002NB-Pv; Tue, 23 Nov 2021 10:07:27 +0300 From: Maxim Galaganov To: mptcp@lists.linux.dev Cc: Maxim Galaganov Subject: [PATCH mptcp-next 1/3] tcp: expose __tcp_sock_set_cork and __tcp_sock_set_nodelay Date: Tue, 23 Nov 2021 10:07:06 +0300 Message-Id: <20211123070708.2897469-2-max@internet.ru> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211123070708.2897469-1-max@internet.ru> References: <20211123070708.2897469-1-max@internet.ru> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 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eAau8CL7WIMRKs4sN3D3tLDjz0dLbV79QFUyzQ2Ujvy7cMT6pYYqY16iZVKkSc3dCLJ7zSJH7+u4VD18S7Vl4ZUrpaVfd2+vE6kuoey4m4VkSEu530nj6fImhcD4MUrOEAnl0W826KZ9Q+tr5ycPtXkTV4k65bRjmOUUP8cvGozZ33TWg5HZplvhhXbhDGzqmQDTd6OAevLeAnq3Ra9uf7zvY2zzsIhlcp/Y7m53TZgf2aB4JOg4gkr2biojutWt0++zX5TVWWM7u2k2Cg== X-Mailru-MI: 800 X-Mailru-Sender: A5480F10D64C90059EC859477DBBED747FBA404D6491E8E314BCF26445B63B3AF7F5837242FA16B284390AFDD794B14678274A4A9E9E44FD5B858845640BC0C1AB428D199E4977E267EA787935ED9F1B X-Mras: Ok Content-Type: text/plain; charset="utf-8" Expose __tcp_sock_set_cork() and __tcp_sock_set_nodelay() for use in MPTCP setsockopt code -- namely for syncing MPTCP socket options with subflows inside sync_socket_options() while already holding the subflow socket lock. Signed-off-by: Maxim Galaganov --- include/linux/tcp.h | 2 ++ net/ipv4/tcp.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 48d8a363319e..78b91bb92f0d 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -512,11 +512,13 @@ static inline u16 tcp_mss_clamp(const struct tcp_sock= *tp, u16 mss) int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount, int shiftlen); =20 +void __tcp_sock_set_cork(struct sock *sk, bool on); void tcp_sock_set_cork(struct sock *sk, bool on); int tcp_sock_set_keepcnt(struct sock *sk, int val); int tcp_sock_set_keepidle_locked(struct sock *sk, int val); int tcp_sock_set_keepidle(struct sock *sk, int val); int tcp_sock_set_keepintvl(struct sock *sk, int val); +void __tcp_sock_set_nodelay(struct sock *sk, bool on); void tcp_sock_set_nodelay(struct sock *sk); void tcp_sock_set_quickack(struct sock *sk, int val); int tcp_sock_set_syncnt(struct sock *sk, int val); diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 6ab82e1a1d41..20054618c87e 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3207,7 +3207,7 @@ static void tcp_enable_tx_delay(void) * TCP_CORK can be set together with TCP_NODELAY and it is stronger than * TCP_NODELAY. */ -static void __tcp_sock_set_cork(struct sock *sk, bool on) +void __tcp_sock_set_cork(struct sock *sk, bool on) { struct tcp_sock *tp =3D tcp_sk(sk); =20 @@ -3235,7 +3235,7 @@ EXPORT_SYMBOL(tcp_sock_set_cork); * However, when TCP_NODELAY is set we make an explicit push, which overri= des * even TCP_CORK for currently queued segments. */ -static void __tcp_sock_set_nodelay(struct sock *sk, bool on) +void __tcp_sock_set_nodelay(struct sock *sk, bool on) { if (on) { tcp_sk(sk)->nonagle |=3D TCP_NAGLE_OFF|TCP_NAGLE_PUSH; --=20 2.33.1 From nobody Thu Apr 25 22:05:50 2024 Delivered-To: wpasupplicant.patchew@gmail.com Received: by 2002:a02:cbb9:0:0:0:0:0 with SMTP id v25csp8045246jap; Mon, 22 Nov 2021 23:49:55 -0800 (PST) X-Google-Smtp-Source: ABdhPJz10TsLNBPZLGo/7MyHX0Om9gVSpbpRBi/A0O80o9ucDKI7zJ1M8bVoCXyJSjRGCSWNkqpq X-Received: by 2002:ae9:e403:: with SMTP id q3mr2966400qkc.53.1637653795466; Mon, 22 Nov 2021 23:49:55 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1637653795; cv=none; d=google.com; s=arc-20160816; b=flZwVedZSpsh8pVe4+f4eNYw8SmKMVNJZ2cqU3O1L6At7lnNHWWyAQVmoTEh5hMlEZ YrZkzbyEKazXBvSQGrG7ppPrjGSJT5vgbIfPBpSONlqNhn8XPUsnLkh9yst1YcRiX6Oc fe7cyszACv8HG8r9PetYrHwi8tY2kM53bYttMQSVzwcmSFHG3s3CaUClokqWQL6ljK/t wNSbHi+/lTul5JpUS/hKzcRGDLBjB7uVOM3mllOzeUJ2GINwaN2cqgl5h4khlh/1rpwF NB6OzYz9ykxI7CalVCRcXwYLBFE5Cw0YxsVY74HX9lGr6pqI3dx8ddWy54TIvj07pljc FeVg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature:dkim-signature; bh=itA0Lg1o+QF8e6XofYDQDd8GTKrQCEPOJRuPlc9CtAk=; b=CiGafbXzNcPRYqASSwy3FioyK/ot2yRu7Tj5YvJ8URnl4CGK+GLvkqFcJwG/iG3dWo KcVXj9DCiLgdrjPjBvk4QDPh6uca4RuJrK5msvWmB9QWyA+ytqNcfm0oIY/bdeQP9did gbQAOJsusHUqBAqEnN+pf7KIpfPbA8mv4TGYUeeUuOfX5KkOrVfLnRCSVJDwBghcfX2r slJDSO192U5n0rZaaDgdB7TgrC+3nr76UVXOwT6lVH4HqREKvQcVWEhrMlnFwfhycWIj 892V9Dzz35Yf2fjvkhpa0bo+t+bf+PhiGWh53BhWp4vKLQEY6ulNeiiGvydXjIQSxPGe mxqQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@internet.ru header.s=mail3 header.b=FfLBcvyJ; dkim=pass header.i=@internet.ru header.s=mail4 header.b=pBFRsiq3; spf=pass (google.com: domain of mptcp+bounces-2513-wpasupplicant.patchew=gmail.com@lists.linux.dev designates 2604:1380:1:3600::1 as permitted sender) smtp.mailfrom="mptcp+bounces-2513-wpasupplicant.patchew=gmail.com@lists.linux.dev"; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=internet.ru Return-Path: Received: from ewr.edge.kernel.org (ewr.edge.kernel.org. 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b=pBFRsiq3/k5kROky6vpnc9a80sUIEljuupJQFCxMhSo0lYly7U9cW5GvkTf2HXHVLEKndlW2SjJgjJaMVg/ww9QWh+zMKXtvIZqzOU/ZXasFfoa7wfOtg5Y2b7P8Ojbtd8a4NsXQ+GTr8dbwSpzmeyaloho/plmtIqK+BDaLaeK21uXRjHzMboLZ4922paskuyGuLS/ww3pT88Wrg4Qo4ZyCbadbMjLMFNuwnDrd+aJY1w1cNXvMI9q9Vz+BpZqZlKImbKnaQIH6dCrGwfC19sziIBp3kHH2nyguXjOWuCC5mYGXr9O3slzCJtGWEUBIa057Qt7+jNc5BeytPDRctQ==; Received: by smtp35.i.mail.ru with esmtpa (envelope-from ) id 1mpPto-0002NB-8F; Tue, 23 Nov 2021 10:07:28 +0300 From: Maxim Galaganov To: mptcp@lists.linux.dev Cc: Maxim Galaganov Subject: [PATCH mptcp-next 2/3] mptcp: expose mptcp_check_and_set_pending Date: Tue, 23 Nov 2021 10:07:07 +0300 Message-Id: <20211123070708.2897469-3-max@internet.ru> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211123070708.2897469-1-max@internet.ru> References: <20211123070708.2897469-1-max@internet.ru> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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3ZO7eAau8CL7WIMRKs4sN3D3tLDjz0dLbV79QFUyzQ2Ujvy7cMT6pYYqY16iZVKkSc3dCLJ7zSJH7+u4VD18S7Vl4ZUrpaVfd2+vE6kuoey4m4VkSEu530nj6fImhcD4MUrOEAnl0W826KZ9Q+tr5ycPtXkTV4k65bRjmOUUP8cvGozZ33TWg5HZplvhhXbhDGzqmQDTd6OAevLeAnq3Ra9uf7zvY2zzsIhlcp/Y7m53TZgf2aB4JOg4gkr2biojutWt0++zX5QIFJQCOptVlA== X-Mailru-MI: 800 X-Mailru-Sender: A5480F10D64C90059EC859477DBBED74C1BDCA8CFB3078E443E0E52E5BA5E17638066306E4938E9F84390AFDD794B14678274A4A9E9E44FD5B858845640BC0C1AB428D199E4977E267EA787935ED9F1B X-Mras: Ok Content-Type: text/plain; charset="utf-8" Expose the mptcp_check_and_set_pending() function for use inside MPTCP sockopt code. The next patch will call it when TCP_CORK is cleared or TCP_NODELAY is set on the MPTCP socket in order to push pending data from mptcp_release_cb(). Signed-off-by: Maxim Galaganov --- net/mptcp/protocol.c | 2 +- net/mptcp/protocol.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index ef2125798e64..8b49866bcc25 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1543,7 +1543,7 @@ static void mptcp_update_post_push(struct mptcp_sock = *msk, msk->snd_nxt =3D snd_nxt_new; } =20 -static void mptcp_check_and_set_pending(struct sock *sk) +void mptcp_check_and_set_pending(struct sock *sk) { if (mptcp_send_head(sk) && !test_bit(MPTCP_PUSH_PENDING, &mptcp_sk(sk)->flags)) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index a6a4bd7de5b4..7f199fb720ff 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -571,6 +571,7 @@ unsigned int mptcp_stale_loss_cnt(const struct net *net= ); void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow, struct mptcp_options_received *mp_opt); bool __mptcp_retransmit_pending_data(struct sock *sk); +void mptcp_check_and_set_pending(struct sock *sk); void __mptcp_push_pending(struct sock *sk, unsigned int flags); bool mptcp_subflow_data_available(struct sock *sk); void __init mptcp_subflow_init(void); --=20 2.33.1 From nobody Thu Apr 25 22:05:50 2024 Delivered-To: wpasupplicant.patchew@gmail.com Received: by 2002:a02:cbb9:0:0:0:0:0 with SMTP id v25csp8044840jap; Mon, 22 Nov 2021 23:49:27 -0800 (PST) X-Google-Smtp-Source: ABdhPJz4xRmHQdDgGTGiFcVcTcuyOhUc9TYtLhnvxeAEd+VQGBG8i3mB7EjrINSo+3wC4HBW/k49 X-Received: by 2002:a05:6808:8c9:: with SMTP id k9mr363315oij.147.1637653767810; Mon, 22 Nov 2021 23:49:27 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1637653767; cv=none; d=google.com; s=arc-20160816; b=eYBpYVTr1n208sF9GllmIf/3uS+I6tPGdUau/MVCtkPMam7sCsryZXSZ9X7ePN9guo w7mnGRG1/7zeYA1CERdndCjKmTOuKXaoIRItdZ1nk6Z4/cJnOgIURnwyF+105kPcD8AS 7++6OnufiwBLUPbhFyxaPqoZgHcRzjk3IT6ompduN/5tYmzHbpz349g04u90Y2H6/TCz iL1O6s6aHMIXcjitqmy287T70Hu47Bj3Wgpr/aWTq6jug+fRV7/nHMXPtZB6iBfl93z+ yfXcgZKGeD2sufckFfJl8GG8dgWX7o4HmaaLC576xEkii3BBUpYxJcFh9hIpEowu5Qb/ 6aiw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature:dkim-signature; bh=/r5oKKCrfDIWXMjq39MOHcVUXGKGYEpRabtOSh/GoLo=; b=dq4UE3jvwMBTsSR7Oq2L3fM/ma4lFRmQonkIIoPYKGQ4lNOoaS3Vkyh+dI6htwUt65 QQBSzWvcEl40qCZk6O0o8L3WuUL1GqEHV5cLi40+ynSB0WSb7AObk7/Hd4EnF/P24LVw ydm1k1Hp96jIBMUI85fd2VgRnOHzqcebIZQ1Yp4WklaajdsdfwJFKPf3VYp2a0LwnI+l RPS66dk35u9UG9tlXqYmelTaogHUurr3vU4SZapwTN3NlIXVprXk+x5VYSg2FiGVp690 +1V+YLeyQG5Dsjq0zoaW/k+Oa5cuUReKcvphn+7wKTQcnsh8yWlpuDdEaO/sjUV/QMTf NC1Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@internet.ru header.s=mail3 header.b=AAezzhxW; dkim=pass header.i=@internet.ru header.s=mail4 header.b=PuVV4S73; spf=pass (google.com: domain of mptcp+bounces-2512-wpasupplicant.patchew=gmail.com@lists.linux.dev designates 147.75.69.165 as permitted sender) smtp.mailfrom="mptcp+bounces-2512-wpasupplicant.patchew=gmail.com@lists.linux.dev"; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=internet.ru Return-Path: Received: from sjc.edge.kernel.org (sjc.edge.kernel.org. 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b=PuVV4S73YFAZCXE+NJprRS4dwJ/3YmoUy7uNpZsMNj2mLGGL2vPcspiTI4IzSDR6VdYj4wPV5BalyV0v/oD5faaKbifHYU45UYAZy2hQ5zr15ZP4Km2JokkHnS7cmSN6H+4y/bePTJMC8SUWmscj4YKeUPHaN4nXq2RjdVtvgQdaQqGWXUxn9znueFfeKzvnru0zQbhCHzI20z1mZpCP29xDH8pXsaOyuGTPwUEEwQ2SzY6h64WtHA9whqth3wyJoxnzbgLFd/bTWjB+IjSZtgmYEzPTcIUpVP2U7UxUgclmElr3rguX+mjq2j9S/hIM3kaY0PuF+eW3TUyL/qbf/Q==; Received: by smtp35.i.mail.ru with esmtpa (envelope-from ) id 1mpPtp-0002NB-IM; Tue, 23 Nov 2021 10:07:30 +0300 From: Maxim Galaganov To: mptcp@lists.linux.dev Cc: Maxim Galaganov Subject: [PATCH mptcp-next 3/3] mptcp: support TCP_CORK and TCP_NODELAY Date: Tue, 23 Nov 2021 10:07:08 +0300 Message-Id: <20211123070708.2897469-4-max@internet.ru> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211123070708.2897469-1-max@internet.ru> References: <20211123070708.2897469-1-max@internet.ru> Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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6B47EA55652F5E70849B49CCF28A6C3B79F2D85E841A4C7ADF4334CDCC15A839C93384347223FF60AA92DCB28147B367B60569B44082A3A3CC338593878DF048773EBFF2F43C11D60D4ABDE8C577C2ED X-Mras: Ok X-7564579A: 646B95376F6C166E X-77F55803: 6242723A09DB00B4EE34287C01580B602FF54B759B37932369B5239765CEB9CF049FFFDB7839CE9E53879DFD0F690E42A1ABF948FCF29E5D2968813A697059DE967915647A064788 X-7FA49CB5: 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 X-C1DE0DAB: C20DE7B7AB408E4181F030C43753B8186998911F362727C414F749A5E30D975CC559E5F89E84DC55F5DC25F94A884639CA4B0D72CF4506D49C2B6934AE262D3EE7EAB7254005DCED8DA55E71E02F9FC08E8E86DC7131B365E7726E8460B7C23C X-D57D3AED: 3ZO7eAau8CL7WIMRKs4sN3D3tLDjz0dLbV79QFUyzQ2Ujvy7cMT6pYYqY16iZVKkSc3dCLJ7zSJH7+u4VD18S7Vl4ZUrpaVfd2+vE6kuoey4m4VkSEu530nj6fImhcD4MUrOEAnl0W826KZ9Q+tr5ycPtXkTV4k65bRjmOUUP8cvGozZ33TWg5HZplvhhXbhDGzqmQDTd6OAevLeAnq3Ra9uf7zvY2zzsIhlcp/Y7m53TZgf2aB4JOg4gkr2biojutWt0++zX5QIFJQCOptVlA== X-Mailru-MI: 800 X-Mailru-Sender: A5480F10D64C90059EC859477DBBED74C056BE3D4CE15F9313AFDEFA4BDAE50C21401CF93FD6FA5584390AFDD794B14678274A4A9E9E44FD5B858845640BC0C1AB428D199E4977E267EA787935ED9F1B X-Mras: Ok Content-Type: text/plain; charset="utf-8" First, add cork and nodelay fields to the mptcp_sock structure so they can be used in sync_socket_options(), and fill them on setsockopt while holding the msk socket lock. Then, on setsockopt set proper tcp_sk(ssk)->nonagle values for subflows by calling __tcp_sock_set_cork() or __tcp_sock_set_nodelay() on the ssk while holding the ssk socket lock. tcp_push_pending_frames() will be invoked on the ssk if a cork was cleared or nodelay was set. Also set MPTCP_PUSH_PENDING bit by calling mptcp_check_and_set_pending(). This will lead to __mptcp_push_pending() being called inside mptcp_release_cb() with new tcp_sk(ssk)->nonagle. Also add getsockopt support for TCP_CORK and TCP_NODELAY. Signed-off-by: Maxim Galaganov Acked-by: Paolo Abeni --- I've tested this by doing single-byte writes and looking at the length of packets in tcpdump, also this is now running on my tproxy setup. Enabling nodelay on a tproxy gave a decrease in latency to first byte and lead to improved user experience in web browsing and voip applications. Existing selftests run passed on a debug config, I'll add coverage for new sockopts once I grasp how to do it. Should these bit fields have an explicit zero initializer? I've looked at recvmsg_inq and it doesn't seem to have one. net/mptcp/protocol.h | 4 ++- net/mptcp/sockopt.c | 70 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+), 1 deletion(-) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 7f199fb720ff..47d24478763c 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -249,7 +249,9 @@ struct mptcp_sock { bool use_64bit_ack; /* Set when we received a 64-bit DSN */ bool csum_enabled; bool allow_infinite_fallback; - u8 recvmsg_inq:1; + u8 recvmsg_inq:1, + cork:1, + nodelay:1; spinlock_t join_list_lock; struct work_struct work; struct sk_buff *ooo_last_skb; diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 11cda8629993..e0501f6bfff8 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -616,6 +616,66 @@ static int mptcp_setsockopt_sol_tcp_congestion(struct = mptcp_sock *msk, sockptr_t return ret; } =20 +static int mptcp_setsockopt_sol_tcp_cork(struct mptcp_sock *msk, sockptr_t= optval, + unsigned int optlen) +{ + struct mptcp_subflow_context *subflow; + struct sock *sk =3D (struct sock *)msk; + int val; + + if (optlen < sizeof(int)) + return -EINVAL; + + if (copy_from_sockptr(&val, optval, sizeof(val))) + return -EFAULT; + + lock_sock(sk); + sockopt_seq_inc(msk); + msk->cork =3D !!val; + mptcp_for_each_subflow(msk, subflow) { + struct sock *ssk =3D mptcp_subflow_tcp_sock(subflow); + + lock_sock(ssk); + __tcp_sock_set_cork(ssk, !!val); + release_sock(ssk); + } + if (!val) + mptcp_check_and_set_pending(sk); + release_sock(sk); + + return 0; +} + +static int mptcp_setsockopt_sol_tcp_nodelay(struct mptcp_sock *msk, sockpt= r_t optval, + unsigned int optlen) +{ + struct mptcp_subflow_context *subflow; + struct sock *sk =3D (struct sock *)msk; + int val; + + if (optlen < sizeof(int)) + return -EINVAL; + + if (copy_from_sockptr(&val, optval, sizeof(val))) + return -EFAULT; + + lock_sock(sk); + sockopt_seq_inc(msk); + msk->nodelay =3D !!val; + mptcp_for_each_subflow(msk, subflow) { + struct sock *ssk =3D mptcp_subflow_tcp_sock(subflow); + + lock_sock(ssk); + __tcp_sock_set_nodelay(ssk, !!val); + release_sock(ssk); + } + if (val) + mptcp_check_and_set_pending(sk); + release_sock(sk); + + return 0; +} + static int mptcp_setsockopt_sol_ip_set_transparent(struct mptcp_sock *msk,= int optname, sockptr_t optval, unsigned int optlen) { @@ -717,6 +777,10 @@ static int mptcp_setsockopt_sol_tcp(struct mptcp_sock = *msk, int optname, return -EOPNOTSUPP; case TCP_CONGESTION: return mptcp_setsockopt_sol_tcp_congestion(msk, optval, optlen); + case TCP_CORK: + return mptcp_setsockopt_sol_tcp_cork(msk, optval, optlen); + case TCP_NODELAY: + return mptcp_setsockopt_sol_tcp_nodelay(msk, optval, optlen); } =20 return -EOPNOTSUPP; @@ -1078,6 +1142,10 @@ static int mptcp_getsockopt_sol_tcp(struct mptcp_soc= k *msk, int optname, optval, optlen); case TCP_INQ: return mptcp_put_int_option(msk, optval, optlen, msk->recvmsg_inq); + case TCP_CORK: + return mptcp_put_int_option(msk, optval, optlen, msk->cork); + case TCP_NODELAY: + return mptcp_put_int_option(msk, optval, optlen, msk->nodelay); } return -EOPNOTSUPP; } @@ -1165,6 +1233,8 @@ static void sync_socket_options(struct mptcp_sock *ms= k, struct sock *ssk) =20 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); + __tcp_sock_set_nodelay(ssk, !!msk->nodelay); =20 inet_sk(ssk)->transparent =3D inet_sk(sk)->transparent; inet_sk(ssk)->freebind =3D inet_sk(sk)->freebind; --=20 2.33.1