From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 48B542C52 for ; Wed, 27 Feb 2019 22:45:53 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Feb 2019 13:45:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,420,1544515200"; d="scan'208";a="127759223" Received: from sivswdev08.ir.intel.com (HELO localhost.localdomain) ([10.237.217.47]) by fmsmga008.fm.intel.com with ESMTP; 27 Feb 2019 13:45:51 -0800 From: Ian Stokes To: dev@dpdk.org Cc: stephen@networkplumber.org, Ian Stokes Date: Wed, 27 Feb 2019 21:45:43 +0000 Message-Id: <1551303948-19746-2-git-send-email-ian.stokes@intel.com> X-Mailer: git-send-email 1.7.0.7 In-Reply-To: <1551303948-19746-1-git-send-email-ian.stokes@intel.com> References: <1551303948-19746-1-git-send-email-ian.stokes@intel.com> Subject: [dpdk-dev] [PATCH v1 1/6] ethdev: add min/max MTU to device info X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 21:45:53 -0000 From: Stephen Hemminger This addresses the usability issue raised by OVS at DPDK Userspace summit. It adds general min/max mtu into device info. For compatiablity, and to save space, it fits in a hole in existing structure. The initial version sets max mtu to normal Ethernet, it is up to PMD to set larger value if it supports Jumbo frames. Also remove the deprecation notice introduced in 18.11 regarding this change and bump ethdev ABI version. Signed-off-by: Stephen Hemminger Signed-off-by: Ian Stokes Acked-by: Andrew Rybchenko --- RFC -> v1 * Removed RFC status. * dev_info->max_mtu set to UINT16_MAX initially instead of ETHER_MTU to avoid breaking jumbo frame support. ETHER_MTU to be re-introduced when all PMD drivers modified to support min/max mtu support. * Bump ethdev ABI version. * Added ACK from Andrew Rybchenko. --- doc/guides/rel_notes/deprecation.rst | 12 ------------ doc/guides/rel_notes/release_19_05.rst | 8 +++++++- lib/librte_ethdev/Makefile | 2 +- lib/librte_ethdev/meson.build | 2 +- lib/librte_ethdev/rte_ethdev.c | 7 +++++++ lib/librte_ethdev/rte_ethdev.h | 2 ++ 6 files changed, 18 insertions(+), 15 deletions(-) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 1b4fcb7e6..0e85c47f3 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -56,18 +56,6 @@ Deprecation Notices Target release for removal of the legacy API will be defined once most PMDs have switched to rte_flow. -* ethdev: Maximum and minimum MTU values vary between hardware devices. In - hardware agnostic DPDK applications access to such information would allow - a more accurate way of validating and setting supported MTU values on a per - device basis rather than using a defined default for all devices. To - resolve this, the following members will be added to ``rte_eth_dev_info``. - Note: these can be added to fit a hole in the existing structure for amd64 - but not for 32-bit, as such ABI change will occur as size of the structure - will increase. - - - Member ``uint16_t min_mtu`` the minimum MTU allowed. - - Member ``uint16_t max_mtu`` the maximum MTU allowed. - * meter: New ``rte_color`` definition will be added in 19.02 and that will replace ``enum rte_meter_color`` in meter library in 19.05. This will help to consolidate color definition, which is currently replicated in many places, diff --git a/doc/guides/rel_notes/release_19_05.rst b/doc/guides/rel_notes/release_19_05.rst index c0390ca16..a5790352c 100644 --- a/doc/guides/rel_notes/release_19_05.rst +++ b/doc/guides/rel_notes/release_19_05.rst @@ -116,6 +116,12 @@ ABI Changes Also, make sure to start the actual text at the margin. ========================================================= +* ethdev: Additional fields in rte_eth_dev_info. + + The ``rte_eth_dev_info`` structure has had two extra fields + added: ``min_mtu`` and ``max_mtu``. Each of these are of type ``uint16_t``. + The values of these fields can be set specifically by the PMD drivers as + supported values can vary from device to device. Shared Library Versions ----------------------- @@ -151,7 +157,7 @@ The libraries prepended with a plus sign were incremented in this version. librte_distributor.so.1 librte_eal.so.9 librte_efd.so.1 - librte_ethdev.so.11 + + librte_ethdev.so.12 librte_eventdev.so.6 librte_flow_classify.so.1 librte_gro.so.1 diff --git a/lib/librte_ethdev/Makefile b/lib/librte_ethdev/Makefile index e09c4263a..8d4a02630 100644 --- a/lib/librte_ethdev/Makefile +++ b/lib/librte_ethdev/Makefile @@ -16,7 +16,7 @@ LDLIBS += -lrte_mbuf -lrte_kvargs -lrte_cmdline -lrte_meter EXPORT_MAP := rte_ethdev_version.map -LIBABIVER := 11 +LIBABIVER := 12 SRCS-y += ethdev_private.c SRCS-y += rte_ethdev.c diff --git a/lib/librte_ethdev/meson.build b/lib/librte_ethdev/meson.build index e98942ff8..8d6165b2a 100644 --- a/lib/librte_ethdev/meson.build +++ b/lib/librte_ethdev/meson.build @@ -2,7 +2,7 @@ # Copyright(c) 2017 Intel Corporation name = 'ethdev' -version = 11 +version = 12 allow_experimental_apis = true sources = files('ethdev_private.c', 'ethdev_profile.c', diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index 85c179496..bdb5f2b0d 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -2524,6 +2524,8 @@ rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info) dev_info->rx_desc_lim = lim; dev_info->tx_desc_lim = lim; dev_info->device = dev->device; + dev_info->min_mtu = ETHER_MIN_MTU; + dev_info->max_mtu = UINT16_MAX; RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_infos_get); (*dev->dev_ops->dev_infos_get)(dev, dev_info); @@ -2587,12 +2589,17 @@ int rte_eth_dev_set_mtu(uint16_t port_id, uint16_t mtu) { int ret; + struct rte_eth_dev_info dev_info; struct rte_eth_dev *dev; RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV); dev = &rte_eth_devices[port_id]; RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->mtu_set, -ENOTSUP); + rte_eth_dev_info_get(port_id, &dev_info); + if (mtu < dev_info.min_mtu || mtu > dev_info.max_mtu) + return -EINVAL; + ret = (*dev->dev_ops->mtu_set)(dev, mtu); if (!ret) dev->data->mtu = mtu; diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index a3c864a13..9fe51b2bd 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -1086,6 +1086,8 @@ struct rte_eth_dev_info { const char *driver_name; /**< Device Driver name. */ unsigned int if_index; /**< Index to bound host interface, or 0 if none. Use if_indextoname() to translate into an interface name. */ + uint16_t min_mtu; /**< Minimum MTU allowed */ + uint16_t max_mtu; /**< Maximum MTU allowed */ const uint32_t *dev_flags; /**< Device flags */ uint32_t min_rx_bufsize; /**< Minimum size of RX buffer. */ uint32_t max_rx_pktlen; /**< Maximum configurable length of RX pkt. */ -- 2.13.6