From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23457C5B572 for ; Tue, 11 Aug 2026 17:51:06 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5A5AD427E2; Tue, 11 Aug 2026 19:50:35 +0200 (CEST) Received: from agw.arknetworks.am (agw.arknetworks.am [79.141.165.80]) by mails.dpdk.org (Postfix) with ESMTP id 4F349427DC for ; Tue, 11 Aug 2026 19:50:31 +0200 (CEST) Received: from localhost.localdomain (unknown [78.109.70.194]) (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 agw.arknetworks.am (Postfix) with ESMTPSA id 98FA9E054D; Tue, 11 Aug 2026 21:50:30 +0400 (+04) DKIM-Filter: OpenDKIM Filter v2.11.0 agw.arknetworks.am 98FA9E054D DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arknetworks.am; s=default; t=1786470631; bh=xtS89p3xu+Mgjzuw1PxaotzpkTAF6WrGK1MNOgxlLpM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G1rAkbgzI/taAd19DIkOtyRRncuCNzG/gzKnUC/VQJW/2Kn9fYaw0pn3q5p1Cf++d dC4yKVqpdrQSywkCwmA4UbpYUsFhb1/P0IyqMZlu2M0UH1i+2l+ZWOF9AZwjF75Af8 SY5oFruhuVBsWDIjtYUo691tPYfYaDXqoSQV17+RaMRrZKJvbiS5YPurlHQTO7Zkyt 3zQHT8Mdib7yxj3/5N3a0nuSyrKxSnYrJkfdWGJjGyz8a6mP+sZDo5mCnruIUAaS/h hQ5Zlf9oHmnvmwJCvEIxdcZs4ArkE7fEQ6zWljxpxUuP3Ldd/OyyBkBADOLzg2d4rt DnUCTajDLFX8w== From: Ivan Malov To: dev@dpdk.org Cc: Andy Moreton , Viacheslav Galaktionov , Roman Zhukov , Pieter Jansen van Vuuren , Stephen Hemminger , Andrew Rybchenko Subject: [PATCH 5/6] common/sfc_efx/base: deny periodic MAC stats delivery to VFs Date: Tue, 11 Aug 2026 21:50:24 +0400 Message-ID: <20260811175025.9019-6-ivan.malov@arknetworks.am> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260811175025.9019-1-ivan.malov@arknetworks.am> References: <20260811175025.9019-1-ivan.malov@arknetworks.am> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Currently, requesting periodic DMA results in an EACCES error being returned, but the DPDK driver expects ENOTSUP to handle the situation gracefully. Implement proper error indication. Signed-off-by: Ivan Malov Reviewed-by: Andy Moreton --- drivers/common/sfc_efx/base/efx_np.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/common/sfc_efx/base/efx_np.c b/drivers/common/sfc_efx/base/efx_np.c index 6d9c62fcda..dafb1dfee6 100644 --- a/drivers/common/sfc_efx/base/efx_np.c +++ b/drivers/common/sfc_efx/base/efx_np.c @@ -1724,16 +1724,32 @@ efx_np_mac_stats( efx_mcdi_execute(enp, &req); if (req.emr_rc != 0) { + const efx_nic_cfg_t *encp = &enp->en_nic_cfg; + + if (req.emr_rc == EACCES && (enable | events) && + EFX_PCI_FUNCTION_IS_VF(encp)) { + /* + * VFs cannot request periodic DMAing of statistics. + * Indicate 'ENOTSUP' for the DPDK driver to handle + * this gracefully and stick with one-time uploads. + */ + rc = ENOTSUP; + goto fail3; + } + /* EF10: Expect ENOENT if no DMA queues are initialised */ if ((req.emr_rc != ENOENT) || (enp->en_rx_qcount + enp->en_tx_qcount != 0)) { rc = req.emr_rc; - goto fail3; + goto fail4; } } return (0); +fail4: + EFSYS_PROBE(fail4); + fail3: EFSYS_PROBE(fail3); -- 2.47.3