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[76.251.165.188]) by smtp.gmail.com with ESMTPSA id s15sm4324530oic.54.2020.06.16.07.18.20 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 16 Jun 2020 07:18:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=dTLxU2WphGsAkX/EAfyglA2CaOp+hp5RtsgwmTF7ppQ=; b=uLmqPT8MFophSmrrJHadzvQ4THpjdquzqrjyBYMBdGK4Jm6Ogx9o6XHsJoOrED91Cz C5YQcmTEwzLOKeiAxqfVD7/GUUgZsLQm4VCmv4KN1Rg0UP17fbhakEJYeHQrBKY8syJT X3H92rO4Mvun5wRC2F/l5a1IiTkNZ1E7qged98NbtMCMVRigS6UhVaBGlScYQpjBFzv5 TY13FLyXHOcxM8oMDGV3wqz6ci72s9Ulu/BHELDdWpOyREChrPM852xdVDtdMxaRBvh8 3AMOMrlfGjQA2KUkVYuI4RNbcSI71mOeqaGP/NjsH65O/R3416lpEGzrZpkgPtxxyQj/ Rr5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=dTLxU2WphGsAkX/EAfyglA2CaOp+hp5RtsgwmTF7ppQ=; b=jCSPmHViD0Wk4UjC9wEcAc05cb5i57hkJ4c/AXgIGXheKiHyZ0+EWp6b0dSf37TRfm 6O0O8AGxeC1O9WO7aCZguj6KubpMbmR7lNPBgAnMLXUdMMjudDD7uklUQ94x7eFJdypV oFCr+ayXttmkc6KPDlGssmGgRB3oFH2E5jYxsSbzkhxQ1U0oegxPWZKHP2+uacP+J723 2lMn6QqkG3Tw/1ilvLhAdn27L0Vlsy8JUIRuK660xP5xbks1yfIcaorFpsjyCqTOxxy/ SGuwKNBdtqd4ZIfVtB2QTL3LtaY4CqKf3kbJo/5Y0g1b0f3UtPkPKWgih0UEMWFGupJ4 dvEw== X-Gm-Message-State: AOAM531Zw8SznmutY+EL2je2jyTWtC2DZhsZ/0cnOtFcAEC3QRH/ygSt ibnLZ4PrvoLa0VTbbK8YbzU6SM8D X-Google-Smtp-Source: ABdhPJyZlAfOzOqoWytmCP25vqItL9AenOZsLx5ZRFNYBDT2Jk++s/uDBcMta7VGI2ggac/GEiUpcQ== X-Received: by 2002:aca:d515:: with SMTP id m21mr3335373oig.7.1592317102169; Tue, 16 Jun 2020 07:18:22 -0700 (PDT) From: Michael Roth To: qemu-devel@nongnu.org Subject: [PATCH 37/78] dp8393x: Clear descriptor in_use field to release packet Date: Tue, 16 Jun 2020 09:15:06 -0500 Message-Id: <20200616141547.24664-38-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200616141547.24664-1-mdroth@linux.vnet.ibm.com> References: <20200616141547.24664-1-mdroth@linux.vnet.ibm.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::243; envelope-from=flukshun@gmail.com; helo=mail-oi1-x243.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=1, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , qemu-stable@nongnu.org, Finn Thain Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Finn Thain When the SONIC receives a packet into the last available descriptor, it retains ownership of that descriptor for as long as necessary. Section 3.4.7 of the datasheet says, When the system appends more descriptors, the SONIC releases ownership of the descriptor after writing 0000h to the RXpkt.in_use field. The packet can now be processed by the host, so raise a PKTRX interrupt, just like the normal case. Signed-off-by: Finn Thain Tested-by: Laurent Vivier Signed-off-by: Jason Wang (cherry picked from commit d9fae13196a31716f45dcddcdd958fbb8e59b35a) Signed-off-by: Michael Roth --- hw/net/dp8393x.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 0e9061d831..4ce2ef818b 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -809,7 +809,17 @@ static ssize_t dp8393x_receive(NetClientState *nc, con= st uint8_t * buf, return -1; } /* Link has been updated by host */ + + /* Clear in_use */ + size =3D sizeof(uint16_t) * width; + address =3D dp8393x_crda(s) + sizeof(uint16_t) * 6 * width; + dp8393x_put(s, width, 0, 0); + address_space_rw(&s->as, address, MEMTXATTRS_UNSPECIFIED, + (uint8_t *)s->data, size, 1); + + /* Move to next descriptor */ s->regs[SONIC_CRDA] =3D s->regs[SONIC_LLFA]; + s->regs[SONIC_ISR] |=3D SONIC_ISR_PKTRX; } =20 /* Save current position */ --=20 2.17.1