From patchwork Fri Jul 10 21:43:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ferruh Yigit X-Patchwork-Id: 73782 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id B21F2A052A; Fri, 10 Jul 2020 23:44:00 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id AB64E1DBCF; Fri, 10 Jul 2020 23:43:54 +0200 (CEST) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id D5A491DB7F for ; Fri, 10 Jul 2020 23:43:52 +0200 (CEST) IronPort-SDR: Nuy451ItSDA7kLNEs0tS1EZ13EarTwLAyIt+1/5XN8iD6jUNlHhE8ZiCOlfDSxmIIGRUW4CUc6 593pPbt9/1ZQ== X-IronPort-AV: E=McAfee;i="6000,8403,9678"; a="213173757" X-IronPort-AV: E=Sophos;i="5.75,336,1589266800"; d="scan'208";a="213173757" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jul 2020 14:43:52 -0700 IronPort-SDR: s7D2WhVY20BICixFONXOgGS4csfj01Q9nyOrVdhTgsStxpa8xP6Wqh9b8PiV4TYxDBlARtSfFm FYmiBCqQ0KOw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,336,1589266800"; d="scan'208";a="458406655" Received: from silpixa00399752.ir.intel.com (HELO silpixa00399752.ger.corp.intel.com) ([10.237.222.180]) by orsmga005.jf.intel.com with ESMTP; 10 Jul 2020 14:43:50 -0700 From: Ferruh Yigit To: Thomas Monjalon , Andrew Rybchenko , Ray Kinsella , Neil Horman Cc: dev@dpdk.org, Ferruh Yigit , Renata Saiakhova Date: Fri, 10 Jul 2020 22:43:42 +0100 Message-Id: <20200710214343.1407419-2-ferruh.yigit@intel.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200710214343.1407419-1-ferruh.yigit@intel.com> References: <20200710144208.499544-1-ferruh.yigit@intel.com> <20200710214343.1407419-1-ferruh.yigit@intel.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH v7 2/3] ethdev: add function to release HW rings 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Renata Saiakhova Free previously allocated memzone for HW rings Signed-off-by: Renata Saiakhova Reviewed-by: Ferruh Yigit Acked-by: Andrew Rybchenko --- v6: * Converted macro to static inline function * Updated API return error value v7: * Application build fixed for __rte_internal usage, fix done in separate patch --- lib/librte_ethdev/rte_ethdev.c | 36 ++++++++++++++++++++++-- lib/librte_ethdev/rte_ethdev_driver.h | 17 +++++++++++ lib/librte_ethdev/rte_ethdev_version.map | 7 +++++ 3 files changed, 58 insertions(+), 2 deletions(-) diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index 598ff80a6e..7858ad5f11 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -4201,6 +4201,14 @@ rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id) return fd; } +static inline int +eth_dma_mzone_name(char *name, size_t len, uint16_t port_id, uint16_t queue_id, + const char *ring_name) +{ + return snprintf(name, len, "eth_p%d_q%d_%s", + port_id, queue_id, ring_name); +} + const struct rte_memzone * rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name, uint16_t queue_id, size_t size, unsigned align, @@ -4210,8 +4218,8 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name, const struct rte_memzone *mz; int rc; - rc = snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s", - dev->data->port_id, queue_id, ring_name); + rc = eth_dma_mzone_name(z_name, sizeof(z_name), dev->data->port_id, + queue_id, ring_name); if (rc >= RTE_MEMZONE_NAMESIZE) { RTE_ETHDEV_LOG(ERR, "ring name too long\n"); rte_errno = ENAMETOOLONG; @@ -4236,6 +4244,30 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name, RTE_MEMZONE_IOVA_CONTIG, align); } +int +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name, + uint16_t queue_id) +{ + char z_name[RTE_MEMZONE_NAMESIZE]; + const struct rte_memzone *mz; + int rc = 0; + + rc = eth_dma_mzone_name(z_name, sizeof(z_name), dev->data->port_id, + queue_id, ring_name); + if (rc >= RTE_MEMZONE_NAMESIZE) { + RTE_ETHDEV_LOG(ERR, "ring name too long\n"); + return -ENAMETOOLONG; + } + + mz = rte_memzone_lookup(z_name); + if (mz) + rc = rte_memzone_free(mz); + else + rc = -ENOENT; + + return rc; +} + int rte_eth_dev_create(struct rte_device *device, const char *name, size_t priv_data_size, diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h index 99d4cd6cd0..13fd049c0d 100644 --- a/lib/librte_ethdev/rte_ethdev_driver.h +++ b/lib/librte_ethdev/rte_ethdev_driver.h @@ -180,6 +180,23 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name, uint16_t queue_id, size_t size, unsigned align, int socket_id); +/** + * Free previously allocated memzone for HW rings. + * + * @param eth_dev + * The *eth_dev* pointer is the address of the *rte_eth_dev* structure + * @param name + * The name of the memory zone + * @param queue_id + * The index of the queue to add to name + * @return + * Negative errno value on error, 0 on success. + */ +__rte_internal +int +rte_eth_dma_zone_free(const struct rte_eth_dev *eth_dev, const char *name, + uint16_t queue_id); + /** * @internal * Atomically set the link status for the specific device. diff --git a/lib/librte_ethdev/rte_ethdev_version.map b/lib/librte_ethdev/rte_ethdev_version.map index 7155056045..664d6b86a2 100644 --- a/lib/librte_ethdev/rte_ethdev_version.map +++ b/lib/librte_ethdev/rte_ethdev_version.map @@ -242,3 +242,10 @@ EXPERIMENTAL { __rte_ethdev_trace_tx_burst; rte_flow_get_aged_flows; }; + +INTERNAL { + global: + + rte_eth_dma_zone_free; +}; +