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GET /api/patches/2171499/?format=api
{ "id": 2171499, "url": "http://patchwork.ozlabs.org/api/patches/2171499/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20251204155133.2437621-6-aleksander.lobakin@intel.com/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20251204155133.2437621-6-aleksander.lobakin@intel.com>", "list_archive_url": null, "date": "2025-12-04T15:51:33", "name": "[iwl-next,v2,5/5] ice: add support for transmitting unreadable frags", "commit_ref": null, "pull_url": null, "state": "under-review", "archived": false, "hash": "536788c8c8de18fc85280f548db69def5a762018", "submitter": { "id": 85827, "url": "http://patchwork.ozlabs.org/api/people/85827/?format=api", "name": "Alexander Lobakin", "email": "aleksander.lobakin@intel.com" }, "delegate": { "id": 109701, "url": "http://patchwork.ozlabs.org/api/users/109701/?format=api", "username": "anguy11", "first_name": "Anthony", "last_name": "Nguyen", "email": "anthony.l.nguyen@intel.com" }, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20251204155133.2437621-6-aleksander.lobakin@intel.com/mbox/", "series": [ { "id": 484409, "url": "http://patchwork.ozlabs.org/api/series/484409/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=484409", "date": "2025-12-04T15:51:29", "name": "ice: add support for devmem/io_uring Rx and Tx", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/484409/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2171499/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2171499/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=zZ4yINMt;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::138; 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envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp1.osuosl.org 4FCB88467A", "OpenDKIM Filter v2.11.0 smtp3.osuosl.org A1ABC614D5" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1764863526;\n\tbh=ptgVARKBA4mo80MMMGenHip0LeStPXhttUG+VvMos/c=;\n\th=From:To:Cc:Date:In-Reply-To:References:Subject:List-Id:\n\t List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:\n\t From;\n\tb=zZ4yINMt3xm/GIKxsziHU+dqAR25LSgvHU/Y3Vl9iz+QB2uLNrPQ7bEz+Rz/dNi5y\n\t L1TJyOuDGMZd5xjSvrI7dEhGlE5LFaGnzlUGBw+BePTn4b7qqVxyrSXYdGT85w3N+I\n\t f4zZSx//Z9tXTglJ/s9DlAhSTez+KDuQK2b9CHKZkfnoRrL64Y7bqnlN9Es/hh1Z8m\n\t y/IU8AeqvCdR4d4kDSmC4BNt93Fe58IfUSDzkSAaMEGkSm7JsOj+GuiZFauR8LCRsC\n\t Gk7gakXsoyT3AGTThY5pOE/XVralhwmlodlELw7RxdUWrSvD8hs7bDlPaQaFe0gjEq\n\t JKfM0/NvJyJ9Q==", "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=192.198.163.7;\n helo=mgamail.intel.com; envelope-from=aleksander.lobakin@intel.com;\n receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp3.osuosl.org A1ABC614D5", "X-CSE-ConnectionGUID": [ "aARsbn4WTNa/soWiDgas0A==", "ujarOcRDS4G3lmuKhB3dbA==" ], "X-CSE-MsgGUID": [ "DfT3xEEPSIaas5VwHTmItg==", "uLdY3ruGQOeUew6qxB1+ng==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11632\"; a=\"92365162\"", "E=Sophos;i=\"6.20,249,1758610800\"; d=\"scan'208\";a=\"92365162\"", "E=Sophos;i=\"6.20,249,1758610800\"; d=\"scan'208\";a=\"194677297\"" ], "X-ExtLoop1": "1", "From": "Alexander Lobakin <aleksander.lobakin@intel.com>", "To": "intel-wired-lan@lists.osuosl.org", "Cc": "Alexander Lobakin <aleksander.lobakin@intel.com>,\n Tony Nguyen <anthony.l.nguyen@intel.com>,\n Przemek Kitszel <przemyslaw.kitszel@intel.com>,\n Andrew Lunn <andrew+netdev@lunn.ch>,\n \"David S. Miller\" <davem@davemloft.net>,\n Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>,\n Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,\n Jacob Keller <jacob.e.keller@intel.com>,\n Aleksandr Loktionov <aleksandr.loktionov@intel.com>,\n nxne.cnse.osdt.itp.upstreaming@intel.com, netdev@vger.kernel.org,\n linux-kernel@vger.kernel.org", "Date": "Thu, 4 Dec 2025 16:51:33 +0100", "Message-ID": "<20251204155133.2437621-6-aleksander.lobakin@intel.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20251204155133.2437621-1-aleksander.lobakin@intel.com>", "References": "<20251204155133.2437621-1-aleksander.lobakin@intel.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Mailman-Original-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1764863525; x=1796399525;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=aHgkVsO3gsi7K2qAzrJew/v3oAF8iandu5cOkJl4aXE=;\n b=QzwMnKz8MiMGUsOVE6xmM9zGgq49lRRSlh3VZOKDDtui5lfntvegWX1Z\n nagJEh9TfnrUliQZ7ah/zwniKIBM3xGd4ztq2T9JMqY64D1yNcr24EQW+\n rIOJznGhO/jeO1xKJ3PDv20xqMERZhUeWb+B+jTb1AFiZAm3v7G9YRrJH\n 4mEbmRnRUl8I4og+YOY8Dx26blG/bjHR2r2GWx/Z73tKfg/DSKifOwuss\n T9tlermzwD0I2hmD4QC2Q2dhY3e1oqh5O6kW7Rloeo1SNi0KDy0W8wo4+\n XxEZOO8DdLYAXRzt5eEGhghpu680qZZ5O+yhL58I12s/ukNjVBT4Yq6ci\n A==;", "X-Mailman-Original-Authentication-Results": [ "smtp3.osuosl.org;\n dmarc=pass (p=none dis=none)\n header.from=intel.com", "smtp3.osuosl.org;\n dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com\n header.a=rsa-sha256 header.s=Intel header.b=QzwMnKz8" ], "Subject": "[Intel-wired-lan] [PATCH iwl-next v2 5/5] ice: add support for\n transmitting unreadable frags", "X-BeenThere": "intel-wired-lan@osuosl.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n <intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "Advertise netmem Tx support in ice. The only change needed is to set\nICE_TX_BUF_FRAG conditionally, only when skb_frag_is_net_iov() is\nfalse. Otherwise, the Tx buffer type will be ICE_TX_BUF_EMPTY and\nthe driver will skip the DMA unmapping operation.\n\nReviewed-by: Jacob Keller <jacob.e.keller@intel.com>\nReviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>\nSigned-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>\n---\n drivers/net/ethernet/intel/ice/ice_main.c | 1 +\n drivers/net/ethernet/intel/ice/ice_sf_eth.c | 1 +\n drivers/net/ethernet/intel/ice/ice_txrx.c | 17 +++++++++++++----\n 3 files changed, 15 insertions(+), 4 deletions(-)", "diff": "diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c\nindex 25e9091ca309..66601b1b7fec 100644\n--- a/drivers/net/ethernet/intel/ice/ice_main.c\n+++ b/drivers/net/ethernet/intel/ice/ice_main.c\n@@ -3524,6 +3524,7 @@ static void ice_set_ops(struct ice_vsi *vsi)\n \n \tnetdev->netdev_ops = &ice_netdev_ops;\n \tnetdev->queue_mgmt_ops = &ice_queue_mgmt_ops;\n+\tnetdev->netmem_tx = true;\n \tnetdev->udp_tunnel_nic_info = &pf->hw.udp_tunnel_nic;\n \tnetdev->xdp_metadata_ops = &ice_xdp_md_ops;\n \tice_set_ethtool_ops(netdev);\ndiff --git a/drivers/net/ethernet/intel/ice/ice_sf_eth.c b/drivers/net/ethernet/intel/ice/ice_sf_eth.c\nindex 41e1606a8222..51ad13c9d7f9 100644\n--- a/drivers/net/ethernet/intel/ice/ice_sf_eth.c\n+++ b/drivers/net/ethernet/intel/ice/ice_sf_eth.c\n@@ -59,6 +59,7 @@ static int ice_sf_cfg_netdev(struct ice_dynamic_port *dyn_port,\n \tether_addr_copy(netdev->perm_addr, dyn_port->hw_addr);\n \tnetdev->netdev_ops = &ice_sf_netdev_ops;\n \tnetdev->queue_mgmt_ops = &ice_queue_mgmt_ops;\n+\tnetdev->netmem_tx = true;\n \tSET_NETDEV_DEVLINK_PORT(netdev, devlink_port);\n \n \terr = register_netdev(netdev);\ndiff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c\nindex b6f56cb81f93..e8e1acbd5a7d 100644\n--- a/drivers/net/ethernet/intel/ice/ice_txrx.c\n+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c\n@@ -113,11 +113,17 @@ ice_prgm_fdir_fltr(struct ice_vsi *vsi, struct ice_fltr_desc *fdir_desc,\n static void\n ice_unmap_and_free_tx_buf(struct ice_tx_ring *ring, struct ice_tx_buf *tx_buf)\n {\n-\tif (tx_buf->type != ICE_TX_BUF_XDP_TX && dma_unmap_len(tx_buf, len))\n+\tswitch (tx_buf->type) {\n+\tcase ICE_TX_BUF_DUMMY:\n+\tcase ICE_TX_BUF_FRAG:\n+\tcase ICE_TX_BUF_SKB:\n+\tcase ICE_TX_BUF_XDP_XMIT:\n \t\tdma_unmap_page(ring->dev,\n \t\t\t dma_unmap_addr(tx_buf, dma),\n \t\t\t dma_unmap_len(tx_buf, len),\n \t\t\t DMA_TO_DEVICE);\n+\t\tbreak;\n+\t}\n \n \tswitch (tx_buf->type) {\n \tcase ICE_TX_BUF_DUMMY:\n@@ -337,12 +343,14 @@ static bool ice_clean_tx_irq(struct ice_tx_ring *tx_ring, int napi_budget)\n \t\t\t}\n \n \t\t\t/* unmap any remaining paged data */\n-\t\t\tif (dma_unmap_len(tx_buf, len)) {\n+\t\t\tif (tx_buf->type != ICE_TX_BUF_EMPTY) {\n \t\t\t\tdma_unmap_page(tx_ring->dev,\n \t\t\t\t\t dma_unmap_addr(tx_buf, dma),\n \t\t\t\t\t dma_unmap_len(tx_buf, len),\n \t\t\t\t\t DMA_TO_DEVICE);\n+\n \t\t\t\tdma_unmap_len_set(tx_buf, len, 0);\n+\t\t\t\ttx_buf->type = ICE_TX_BUF_EMPTY;\n \t\t\t}\n \t\t}\n \t\tice_trace(clean_tx_irq_unmap_eop, tx_ring, tx_desc, tx_buf);\n@@ -1493,7 +1501,8 @@ ice_tx_map(struct ice_tx_ring *tx_ring, struct ice_tx_buf *first,\n \t\t\t\t DMA_TO_DEVICE);\n \n \t\ttx_buf = &tx_ring->tx_buf[i];\n-\t\ttx_buf->type = ICE_TX_BUF_FRAG;\n+\t\tif (!skb_frag_is_net_iov(frag))\n+\t\t\ttx_buf->type = ICE_TX_BUF_FRAG;\n \t}\n \n \t/* record SW timestamp if HW timestamp is not available */\n@@ -2368,7 +2377,7 @@ void ice_clean_ctrl_tx_irq(struct ice_tx_ring *tx_ring)\n \t\t}\n \n \t\t/* unmap the data header */\n-\t\tif (dma_unmap_len(tx_buf, len))\n+\t\tif (tx_buf->type != ICE_TX_BUF_EMPTY)\n \t\t\tdma_unmap_single(tx_ring->dev,\n \t\t\t\t\t dma_unmap_addr(tx_buf, dma),\n \t\t\t\t\t dma_unmap_len(tx_buf, len),\n", "prefixes": [ "iwl-next", "v2", "5/5" ] }