From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 32E0315CAE for ; Tue, 8 Nov 2022 14:14:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 596A1C433C1; Tue, 8 Nov 2022 14:14:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667916870; bh=+A9R9iXaj0tnMppuYoK6/HVugyLmetw5AC7z/3p0AMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qzfOoRq+uBVbXYZ5CCSHDzT8t+TscIK7YfNWCVwSTu9dVbCIzr+vHYlv7rYZr0pnC s4V3trGkRbuVFmJhaARbQNS/tg0LKTFhvnIi3VOnBt08HEzNt4NB73H48zQAs3RXV5 EXTpHf9vkS/75JYcCP0ZnobJhfiRVWM6kC7oNL/M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jens Axboe , Stefan Metzmacher , Pavel Begunkov , Jakub Kicinski Subject: [PATCH 6.0 160/197] net: also flag accepted sockets supporting msghdr originated zerocopy Date: Tue, 8 Nov 2022 14:39:58 +0100 Message-Id: <20221108133402.210696893@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221108133354.787209461@linuxfoundation.org> References: <20221108133354.787209461@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Stefan Metzmacher commit 71b7786ea478f3c4611deff4d2b9676b0c17c56b upstream. Without this only the client initiated tcp sockets have SOCK_SUPPORT_ZC. The listening socket on the server also has it, but the accepted connections didn't, which meant IORING_OP_SEND[MSG]_ZC will always fails with -EOPNOTSUPP. Fixes: e993ffe3da4b ("net: flag sockets supporting msghdr originated zerocopy") Cc: # 6.0 CC: Jens Axboe Link: https://lore.kernel.org/io-uring/20221024141503.22b4e251@kernel.org/T/#m38aa19b0b825758fb97860a38ad13122051f9dda Signed-off-by: Stefan Metzmacher Signed-off-by: Pavel Begunkov Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/ipv4/af_inet.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -748,6 +748,8 @@ int inet_accept(struct socket *sock, str (TCPF_ESTABLISHED | TCPF_SYN_RECV | TCPF_CLOSE_WAIT | TCPF_CLOSE))); + if (test_bit(SOCK_SUPPORT_ZC, &sock->flags)) + set_bit(SOCK_SUPPORT_ZC, &newsock->flags); sock_graft(sk2, newsock); newsock->state = SS_CONNECTED;