From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: passt.top; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: passt.top; dkim=pass (2048-bit key; secure) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.a=rsa-sha256 header.s=202502 header.b=eEDs31n/; dkim-atps=neutral Received: from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by passt.top (Postfix) with ESMTPS id EF0CC5A026F for ; Fri, 04 Apr 2025 12:15:47 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gibson.dropbear.id.au; s=202502; t=1743761743; bh=3ZKsNGbeSrCTJFs9FjrL6250QeCJs5FuWI+XoV91Qec=; h=From:To:Cc:Subject:Date:From; b=eEDs31n/O0Cn3KsGauhBws/qO9FlWEM9dx8S41kyqW7BFwkFChc0jV2p9CdmFAYwF 2XuZtDWOrZygMnCrPDfi9tcjRlQOTri//xJb9n0vQnEq+Fu4+7LCOdnBkv3niRfBJl 2//5RQo1MQJaGEntfYq/qEUWC+MxFR2vbrK3IoS4qXcyBfCtBa/BmccPsb6TgHsEA9 umn0aJsVc+xwiUax0JbeePhGluvknkQRViALTTDzsihuwTnivZbOxHu7kHsspDL8+F 5pTVYxjO5NgPkz2cBa31vIF80SP1/TWB/jrEiASEtWf4N/MkIWGHZfYRhde2M2q3MU bzUqoXJ+AbcQA== Received: by gandalf.ozlabs.org (Postfix, from userid 1007) id 4ZTZHg5G2Gz4xNF; Fri, 4 Apr 2025 21:15:43 +1100 (AEDT) From: David Gibson To: Stefano Brivio , passt-dev@passt.top Subject: [PATCH 00/12] Use connect()ed sockets for both sides of UDP flows Date: Fri, 4 Apr 2025 21:15:30 +1100 Message-ID: <20250404101542.3729316-1-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.49.0 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID-Hash: 6IMVMSDN2BWCKEU6GGFJMLKNY2QVLLM5 X-Message-ID-Hash: 6IMVMSDN2BWCKEU6GGFJMLKNY2QVLLM5 X-MailFrom: dgibson@gandalf.ozlabs.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: David Gibson X-Mailman-Version: 3.3.8 Precedence: list List-Id: Development discussion and patches for passt Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: As discussed, I've been working on using connect()ed sockets, rather than dups of the listening sockets for handling traffic on the initiating side of UDP flows. This improves consistency, avoids some problems (bug 103) and will allow for some useful future improvements. It has the nice side effect of allowing some more code to be shared between various paths, resulting in a pretty nice negative diffstat. David Gibson (12): udp: Use connect()ed sockets for initiating side udp: Make udp_sock_recv() take max number of frames as a parameter udp: Polish udp_vu_sock_info() and remove from vu specific code udp: Don't bother to batch datagrams from "listening" socket udp: Parameterize number of datagrams handled by udp_*_reply_sock_data() udp: Split spliced forwarding path from udp_buf_reply_sock_data() udp: Merge vhost-user and "buf" listening socket paths udp: Move UDP_MAX_FRAMES to udp.c udp_flow: Take pif and port as explicit parameters to udp_flow_from_sock() udp: Rework udp_listen_sock_data() into udp_sock_fwd() udp: Fold udp_splice_prepare and udp_splice_send into udp_sock_to_sock udp_flow: Don't discard packets that arrive between bind() and connect() epoll_type.h | 4 +- flow.c | 2 +- passt.c | 6 +- udp.c | 332 +++++++++++++++++++++++-------------------------- udp.h | 4 +- udp_flow.c | 120 ++++++++++-------- udp_flow.h | 8 +- udp_internal.h | 4 +- udp_vu.c | 93 +------------- udp_vu.h | 2 +- util.c | 2 +- 11 files changed, 242 insertions(+), 335 deletions(-) -- 2.49.0