From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.52]) by dpdk.org (Postfix) with ESMTP id 10BE91B00B for ; Tue, 23 Jan 2018 14:16:52 +0100 (CET) X-Virus-Scanned: Proofpoint Essentials engine Received: from webmail.solarflare.com (webmail.solarflare.com [12.187.104.26]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1-us4.ppe-hosted.com (Proofpoint Essentials ESMTP Server) with ESMTPS id ED601BC006B; Tue, 23 Jan 2018 13:16:51 +0000 (UTC) Received: from ocex03.SolarFlarecom.com (10.20.40.36) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Tue, 23 Jan 2018 05:16:49 -0800 Received: from opal.uk.solarflarecom.com (10.17.10.1) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25 via Frontend Transport; Tue, 23 Jan 2018 05:16:48 -0800 Received: from uklogin.uk.solarflarecom.com (uklogin.uk.solarflarecom.com [10.17.10.10]) by opal.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id w0NDGlNV006402; Tue, 23 Jan 2018 13:16:48 GMT Received: from uklogin.uk.solarflarecom.com (localhost.localdomain [127.0.0.1]) by uklogin.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id w0NDGled010689; Tue, 23 Jan 2018 13:16:47 GMT From: Andrew Rybchenko To: CC: Olivier Matz Date: Tue, 23 Jan 2018 13:15:59 +0000 Message-ID: <1516713372-10572-5-git-send-email-arybchenko@solarflare.com> X-Mailer: git-send-email 1.8.2.3 In-Reply-To: <1516713372-10572-1-git-send-email-arybchenko@solarflare.com> References: <1511539591-20966-1-git-send-email-arybchenko@solarflare.com> <1516713372-10572-1-git-send-email-arybchenko@solarflare.com> MIME-Version: 1.0 Content-Type: text/plain X-MDID: 1516713412-nHu87yZiK8ix Subject: [dpdk-dev] [RFC v2 04/17] mempool: add op to populate objects using provided memory 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: Tue, 23 Jan 2018 13:16:53 -0000 The callback allows to customize how objects are stored in the memory chunk. Default implementation of the callback which simply puts objects one by one is available. Suggested-by: Olivier Matz Signed-off-by: Andrew Rybchenko --- lib/librte_mempool/rte_mempool.c | 44 +++++++++++----- lib/librte_mempool/rte_mempool.h | 83 ++++++++++++++++++++++++++++++ lib/librte_mempool/rte_mempool_ops.c | 18 +++++++ lib/librte_mempool/rte_mempool_version.map | 1 + 4 files changed, 133 insertions(+), 13 deletions(-) diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c index 1f54f95..c5003a9 100644 --- a/lib/librte_mempool/rte_mempool.c +++ b/lib/librte_mempool/rte_mempool.c @@ -145,9 +145,6 @@ mempool_add_elem(struct rte_mempool *mp, void *obj, rte_iova_t iova) tlr = __mempool_get_trailer(obj); tlr->cookie = RTE_MEMPOOL_TRAILER_COOKIE; #endif - - /* enqueue in ring */ - rte_mempool_ops_enqueue_bulk(mp, &obj, 1); } /* call obj_cb() for each mempool element */ @@ -396,6 +393,30 @@ rte_mempool_free_memchunks(struct rte_mempool *mp) } } +int +rte_mempool_populate_one_by_one(struct rte_mempool *mp, unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb) +{ + size_t total_elt_sz; + size_t off; + unsigned int i; + void *obj; + + total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size; + + for (off = 0, i = 0; off + total_elt_sz <= len && i < max_objs; i++) { + off += mp->header_size; + obj = (char *)vaddr + off; + obj_cb(mp, obj, + (iova == RTE_BAD_IOVA) ? RTE_BAD_IOVA : (iova + off)); + rte_mempool_ops_enqueue_bulk(mp, &obj, 1); + off += mp->elt_size + mp->trailer_size; + } + + return i; +} + /* Add objects in the pool, using a physically contiguous memory * zone. Return the number of objects added, or a negative value * on error. @@ -466,16 +487,13 @@ rte_mempool_populate_iova(struct rte_mempool *mp, char *vaddr, else off = RTE_PTR_ALIGN_CEIL(vaddr, RTE_CACHE_LINE_SIZE) - vaddr; - while (off + total_elt_sz <= len && mp->populated_size < mp->size) { - off += mp->header_size; - if (iova == RTE_BAD_IOVA) - mempool_add_elem(mp, (char *)vaddr + off, - RTE_BAD_IOVA); - else - mempool_add_elem(mp, (char *)vaddr + off, iova + off); - off += mp->elt_size + mp->trailer_size; - i++; - } + if (off > len) + return -EINVAL; + + i = rte_mempool_ops_populate(mp, mp->size - mp->populated_size, + (char *)vaddr + off, + (iova == RTE_BAD_IOVA) ? RTE_BAD_IOVA : (iova + off), + len - off, mempool_add_elem); /* not enough room to store one object */ if (i == 0) diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h index be8a371..f6ffab9 100644 --- a/lib/librte_mempool/rte_mempool.h +++ b/lib/librte_mempool/rte_mempool.h @@ -461,6 +461,59 @@ ssize_t rte_mempool_calc_mem_size_def(const struct rte_mempool *mp, uint32_t obj_num, uint32_t pg_shift, size_t *min_chunk_size, size_t *align); +/** + * Function to be called for each populated object. + * + * @param mp + * A pointer to the mempool structure. + * @param vaddr + * Object virtual address. + * @param iova + * Input/output virtual addresss of the object or #RTE_BAD_IOVA. + */ +typedef void (rte_mempool_populate_obj_cb_t)(struct rte_mempool *mp, + void *vaddr, rte_iova_t iova); + +/** + * Populate memory pool objects using provided memory chunk. + * + * Populated objects should be enqueued to the pool, e.g. using + * rte_mempool_ops_enqueue_bulk(). + * + * If the given IO address is unknown (iova = RTE_BAD_IOVA), + * the chunk doesn't need to be physically contiguous (only virtually), + * and allocated objects may span two pages. + * + * @param mp + * A pointer to the mempool structure. + * @param max_objs + * Maximum number of objects to be populated. + * @param vaddr + * The virtual address of memory that should be used to store objects. + * @param iova + * The IO address + * @param len + * The length of memory in bytes. + * @param obj_cb + * Callback function to be executed for each populated object. + * @return + * The number of objects added on success. + * On error, no objects are populated and a negative errno is returned. + */ +typedef int (*rte_mempool_populate_t)(struct rte_mempool *mp, + unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb); + +/** + * Default way to populate memory pool object using provided memory + * chunk: just slice objects one by one. + */ +int rte_mempool_populate_one_by_one(struct rte_mempool *mp, + unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb); + /** Structure defining mempool operations structure */ struct rte_mempool_ops { char name[RTE_MEMPOOL_OPS_NAMESIZE]; /**< Name of mempool ops struct. */ @@ -482,6 +535,11 @@ struct rte_mempool_ops { * store specified number of objects. */ rte_mempool_calc_mem_size_t calc_mem_size; + /** + * Optional callback to populate mempool objects using + * provided memory chunk. + */ + rte_mempool_populate_t populate; } __rte_cache_aligned; #define RTE_MEMPOOL_MAX_OPS_IDX 16 /**< Max registered ops structs */ @@ -654,6 +712,31 @@ ssize_t rte_mempool_ops_calc_mem_size(const struct rte_mempool *mp, size_t *min_chunk_size, size_t *align); /** + * @internal wrapper for mempool_ops populate callback. + * + * Populate memory pool objects using provided memory chunk. + * + * @param mp + * A pointer to the mempool structure. + * @param max_objs + * Maximum number of objects to be populated. + * @param vaddr + * The virtual address of memory that should be used to store objects. + * @param iova + * The IO address + * @param len + * The length of memory in bytes. + * @param obj_cb + * Callback function to be executed for each populated object. + * @return + * The number of objects added on success. + * On error, no objects are populated and a negative errno is returned. + */ +int rte_mempool_ops_populate(struct rte_mempool *mp, unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb); + +/** * @internal wrapper for mempool_ops free callback. * * @param mp diff --git a/lib/librte_mempool/rte_mempool_ops.c b/lib/librte_mempool/rte_mempool_ops.c index d048b37..7c4a22b 100644 --- a/lib/librte_mempool/rte_mempool_ops.c +++ b/lib/librte_mempool/rte_mempool_ops.c @@ -89,6 +89,7 @@ rte_mempool_register_ops(const struct rte_mempool_ops *h) ops->get_capabilities = h->get_capabilities; ops->register_memory_area = h->register_memory_area; ops->calc_mem_size = h->calc_mem_size; + ops->populate = h->populate; rte_spinlock_unlock(&rte_mempool_ops_table.sl); @@ -170,6 +171,23 @@ rte_mempool_ops_calc_mem_size(const struct rte_mempool *mp, return ops->calc_mem_size(mp, obj_num, pg_shift, min_chunk_size, align); } +/* wrapper to populate memory pool objects using provided memory chunk */ +int +rte_mempool_ops_populate(struct rte_mempool *mp, unsigned int max_objs, + void *vaddr, rte_iova_t iova, size_t len, + rte_mempool_populate_obj_cb_t *obj_cb) +{ + struct rte_mempool_ops *ops; + + ops = rte_mempool_get_ops(mp->ops_index); + + if (ops->populate == NULL) + return rte_mempool_populate_one_by_one(mp, max_objs, vaddr, + iova, len, obj_cb); + + return ops->populate(mp, max_objs, vaddr, iova, len, obj_cb); +} + /* sets mempool ops previously registered by rte_mempool_register_ops. */ int rte_mempool_set_ops_byname(struct rte_mempool *mp, const char *name, diff --git a/lib/librte_mempool/rte_mempool_version.map b/lib/librte_mempool/rte_mempool_version.map index 9fa7270..00288de 100644 --- a/lib/librte_mempool/rte_mempool_version.map +++ b/lib/librte_mempool/rte_mempool_version.map @@ -56,6 +56,7 @@ DPDK_18.05 { global: rte_mempool_calc_mem_size_def; + rte_mempool_populate_one_by_one; } DPDK_17.11; -- 2.7.4