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 96AFACDB47C for ; Tue, 23 Jun 2026 21:54:38 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5D1F0402A2; Tue, 23 Jun 2026 23:54:37 +0200 (CEST) Received: from mail-qt1-f202.google.com (mail-qt1-f202.google.com [209.85.160.202]) by mails.dpdk.org (Postfix) with ESMTP id E455740293 for ; Tue, 23 Jun 2026 23:54:35 +0200 (CEST) Received: by mail-qt1-f202.google.com with SMTP id d75a77b69052e-519899aa6bfso4548521cf.1 for ; Tue, 23 Jun 2026 14:54:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782251675; x=1782856475; darn=dpdk.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=qa0JsgajxRDLtzkgCmFAOFE/U9oiiF19A8Kt6D3rUEQ=; b=CXr5oY5WVGiKWX1icmNNjG1OcsPPlUU5QrrK1hFcLPx/3vm5TaPFCUgmIKkF7GLaTB MqQ2sXs/OMNKIBz7TyngAwFF2wL5/FwmxGYBtV+U9yrqdhfZuGoMGd8Nbo3d/KnHWGVT oNczfrS3c5cQnqI8oZ9h7JrY+zBPcfiEf/rp4kZpvDOTXokn1ctrdu5eIMhD4b6OF9wL zBrhzw4ZPoMr3RH+pYlTg8b89Kw6qSwifMhYdhaCImpoaeMhv3QxamJFncdidLNukx16 XadohcVPQskVCKzg4MA8UjiOZNwvDMcIQ+EGz5pUb2pTwccVb61qsaoBILeFOqo0RKne p7pg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782251675; x=1782856475; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=qa0JsgajxRDLtzkgCmFAOFE/U9oiiF19A8Kt6D3rUEQ=; b=rMLsSGjmiPgVEPMxWHdpWa73iCjP6E1cPvmP4lUNx8rKb2E6mrCedwgDHTA1YHvamO Gg3cVaBGSWVTE97M38mQtFXwpue9fBy8gJCI14uAGu+DBgrXfX/DlDLXVDzXEPDGxILx 4mdrHF9g4RW6GCOCBGzCCZQ4EGF6Nbvp92hRa3FbG3QbGvJi9HqGaKdZbwdlU06Ab72u gmOUBTU5M7I97YA64TU5+ZToxdkCOYdBDuy5ZSewE8Su+Xd3v+Gq/phBaMU29h5yLOuI 827kiff5cAemdABZ86T+yxB/Jm3fEuKs+fLdEoqFT6gHVCg3fDvG+/EHC1s1VCkJUoyA 3ZFA== X-Gm-Message-State: AOJu0YxqntgF17/Chl6nX+NeIOQdE5gpaRDWed2DyZ7tlobGAZqCsd1/ x1Z4e2V1fn2EjYucfArkkIXgcyrqeFUtvRQNxCkg6tHep0yYHGzj+J7QjYzo64nhz6SYm1Zw11s M8wNDnG5kSka1kZDh+rCSUbjxwfQIV+TbUQZoxNofGT/ndW4BLWQs4kodPYwG9eh+ygp25yrqAD FJwrLbBySEglhqm0oTJLYrirE= X-Received: from qtnn9.prod.google.com ([2002:a05:622a:4649:b0:516:cb08:8941]) (user=blasko job=prod-delivery.src-stubby-dispatcher) by 2002:a05:622a:487:b0:517:5e32:af23 with SMTP id d75a77b69052e-51a61d7cee8mr13425121cf.23.1782251674743; Tue, 23 Jun 2026 14:54:34 -0700 (PDT) Date: Tue, 23 Jun 2026 21:53:24 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260623215325.814776-1-blasko@google.com> Subject: [PATCH] net/af_xdp: add Rx metadata and dynamic timestamping support From: Mark Blasko To: dev@dpdk.org, Ciara Loftus , Maryam Tahhan Cc: Mark Blasko , Joshua Washington , "Jasper Tran O'Leary" Content-Type: text/plain; charset="UTF-8" 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 Enable dynamic RX timestamping in the AF_XDP Poll Mode Driver. This extracts the ingress timestamp prepended to the packet headroom by the XDP program and populates it in the mbuf. Signed-off-by: Mark Blasko Reviewed-by: Joshua Washington Reviewed-by: Jasper Tran O'Leary --- doc/guides/rel_notes/release_26_07.rst | 5 +++ drivers/net/af_xdp/rte_eth_af_xdp.c | 56 +++++++++++++++++++++++++- 2 files changed, 60 insertions(+), 1 deletion(-) diff --git a/doc/guides/rel_notes/release_26_07.rst b/doc/guides/rel_notes/release_26_07.rst index 6eba91a5e9..727442258f 100644 --- a/doc/guides/rel_notes/release_26_07.rst +++ b/doc/guides/rel_notes/release_26_07.rst @@ -63,6 +63,11 @@ New Features ``rte_eal_init`` and the application is responsible for probing each device, * ``--auto-probing`` enables the initial bus probing, which is the current default behavior. +* **Updated AF_XDP ethernet driver.** + + * Added support for dynamic RX metadata and timestamping offload + (``RTE_ETH_RX_OFFLOAD_TIMESTAMP``). + * **Added LinkData sxe2 ethernet driver.** Added network driver for the LinkData network adapters. diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c index 2cdb533276..c90e232d57 100644 --- a/drivers/net/af_xdp/rte_eth_af_xdp.c +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c @@ -62,6 +62,13 @@ #define PF_XDP AF_XDP #endif +struct af_xdp_rx_metadata { + uint64_t rx_timestamp; +}; + +static int timestamp_dynfield_offset = -1; +static uint64_t timestamp_dynflag; + RTE_LOG_REGISTER_DEFAULT(af_xdp_logtype, NOTICE); #define RTE_LOGTYPE_NET_AF_XDP af_xdp_logtype @@ -144,6 +151,7 @@ struct pkt_rx_queue { struct pollfd fds[1]; int xsk_queue_idx; int busy_budget; + bool rx_timestamp_enabled; }; struct tx_stats { @@ -398,6 +406,20 @@ af_xdp_rx_zc(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) rte_pktmbuf_pkt_len(bufs[i]) = len; rte_pktmbuf_data_len(bufs[i]) = len; + + if (rxq->rx_timestamp_enabled && + timestamp_dynfield_offset >= 0) { + struct af_xdp_rx_metadata *meta; + + meta = (struct af_xdp_rx_metadata *) + ((char *)rte_pktmbuf_mtod(bufs[i], void *) - + sizeof(struct af_xdp_rx_metadata)); + *RTE_MBUF_DYNFIELD(bufs[i], + timestamp_dynfield_offset, + uint64_t *) = meta->rx_timestamp; + bufs[i]->ol_flags |= timestamp_dynflag; + } + rx_bytes += len; } @@ -457,6 +479,18 @@ af_xdp_rx_cp(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) len = desc->len; pkt = xsk_umem__get_data(rxq->umem->mz->addr, addr); + if (rxq->rx_timestamp_enabled && + timestamp_dynfield_offset >= 0) { + struct af_xdp_rx_metadata *meta; + + meta = (struct af_xdp_rx_metadata *)((char *)pkt - + sizeof(struct af_xdp_rx_metadata)); + *RTE_MBUF_DYNFIELD(mbufs[i], + timestamp_dynfield_offset, + uint64_t *) = meta->rx_timestamp; + mbufs[i]->ol_flags |= timestamp_dynflag; + } + rte_memcpy(rte_pktmbuf_mtod(mbufs[i], void *), pkt, len); rte_ring_enqueue(umem->buf_ring, (void *)addr); rte_pktmbuf_pkt_len(mbufs[i]) = len; @@ -743,6 +777,23 @@ eth_dev_start(struct rte_eth_dev *dev) { uint16_t i; + if (dev->data->dev_conf.rxmode.offloads & + RTE_ETH_RX_OFFLOAD_TIMESTAMP) { + int rc; + + rc = rte_mbuf_dyn_rx_timestamp_register( + ×tamp_dynfield_offset, + ×tamp_dynflag); + if (rc) { + AF_XDP_LOG_LINE(ERR, + "Failed to register mbuf timestamp field"); + return rc; + } + AF_XDP_LOG_LINE(INFO, + "Registered mbuf timestamp field, offset: %d", + timestamp_dynfield_offset); + } + dev->data->dev_link.link_status = RTE_ETH_LINK_UP; for (i = 0; i < dev->data->nb_rx_queues; i++) { dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED; @@ -870,6 +921,8 @@ eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) dev_info->max_rx_queues = internals->queue_cnt; dev_info->max_tx_queues = internals->queue_cnt; + dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_TIMESTAMP; + dev_info->min_mtu = RTE_ETHER_MIN_MTU; #if defined(XDP_UMEM_UNALIGNED_CHUNK_FLAG) dev_info->max_rx_pktlen = getpagesize() - @@ -1873,7 +1926,8 @@ eth_rx_queue_setup(struct rte_eth_dev *dev, process_private->rxq_xsk_fds[rx_queue_id] = rxq->fds[0].fd; rxq->port = dev->data->port_id; - + rxq->rx_timestamp_enabled = !!(dev->data->dev_conf.rxmode.offloads & + RTE_ETH_RX_OFFLOAD_TIMESTAMP); dev->data->rx_queues[rx_queue_id] = rxq; return 0; -- 2.55.0.rc0.799.gd6f94ed593-goog