From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: passt.top; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: passt.top; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=LWyzyPla; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by passt.top (Postfix) with ESMTPS id 043EA5A0626 for ; Thu, 20 Feb 2025 17:02:42 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1740067362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=J5kvsiHn/osIMsUdS8ZoTu8HUTdTo3emuH2sI1XmkxI=; b=LWyzyPlaS4lb09ASsYyxj96lJUNEcvQUm3EGxcGMF54XtJ4I5D8EsXxhAT4nL0pnIjxaXn DAypqnn5znJSD1TE00jk421b12nYMsXQiu9lLBxj/i6Oz/zAbgZ6Nc82mAXHUXuYcf5i+o Vd29dJeVYqKmIUACqbdj2ppusd7Ix4Q= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-387-z1flngCtMEC3D9D6hKFSiw-1; Thu, 20 Feb 2025 11:02:39 -0500 X-MC-Unique: z1flngCtMEC3D9D6hKFSiw-1 X-Mimecast-MFC-AGG-ID: z1flngCtMEC3D9D6hKFSiw_1740067358 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 651B8196E078 for ; Thu, 20 Feb 2025 16:02:38 +0000 (UTC) Received: from jmaloy-thinkpadp16vgen1.rmtcaqc.csb (unknown [10.22.65.244]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id C60791944CC4; Thu, 20 Feb 2025 16:02:36 +0000 (UTC) From: Jon Maloy To: passt-dev@passt.top, sbrivio@redhat.com, lvivier@redhat.com, dgibson@redhat.com, jmaloy@redhat.com Subject: [PATCH v4 0/2] Reconstruct ICMP headers for failed UDP connect Date: Thu, 20 Feb 2025 11:02:33 -0500 Message-ID: <20250220160235.2467261-1-jmaloy@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: MbEhSFNnHLYWsZOy5Mp4-eB6kDMSULwDiG9m2td8CNU_1740067358 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true Message-ID-Hash: LH745ACOKWB5Z6RHSWFCX5CM3OQ627NW X-Message-ID-Hash: LH745ACOKWB5Z6RHSWFCX5CM3OQ627NW X-MailFrom: jmaloy@redhat.com 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 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: Reconstruct incoming ICMP headers for failed UDP connect and forward back to local peer. v2: - Added patch breaking out udp header creation from function tap_udp4_send(). - Updated the ICMP creation by using the new function. - Added logics to find correct flow, depending on origin. - All done after feedback from David Gibson. v3: - More changes after feedback from David Gibson. v4: - Even more changes after feedback from D. Gibson Jon Maloy (2): tap: break out building of udp header from tap_udp4_send function udp: create and send ICMPv4 to local peer when applicable tap.c | 36 ++++++++++++++++------ tap.h | 7 +++++ udp.c | 81 ++++++++++++++++++++++++++++++++++++++++++-------- udp_internal.h | 2 +- udp_vu.c | 4 +-- 5 files changed, 106 insertions(+), 24 deletions(-) -- 2.48.1