From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id 2BE7F1B891 for ; Mon, 9 Apr 2018 20:01:42 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Apr 2018 11:01:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,427,1517904000"; d="scan'208";a="219003947" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by fmsmga005.fm.intel.com with ESMTP; 09 Apr 2018 11:01:37 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id w39I1aaE031178; Mon, 9 Apr 2018 19:01:36 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id w39I1aTU028007; Mon, 9 Apr 2018 19:01:36 +0100 Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with LOCAL id w39I1a6P028003; Mon, 9 Apr 2018 19:01:36 +0100 From: Anatoly Burakov To: dev@dpdk.org Cc: keith.wiles@intel.com, jianfeng.tan@intel.com, andras.kovacs@ericsson.com, laszlo.vadkeri@ericsson.com, benjamin.walker@intel.com, bruce.richardson@intel.com, thomas@monjalon.net, konstantin.ananyev@intel.com, kuralamudhan.ramakrishnan@intel.com, louise.m.daly@intel.com, nelio.laranjeiro@6wind.com, yskoh@mellanox.com, pepperjo@japf.ch, jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com, olivier.matz@6wind.com, shreyansh.jain@nxp.com, gowrishankar.m@linux.vnet.ibm.com Date: Mon, 9 Apr 2018 19:00:43 +0100 Message-Id: <79765f1276ee835b7051d28032e1b087f2617650.1523296700.git.anatoly.burakov@intel.com> X-Mailer: git-send-email 1.7.0.7 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v5 40/70] eal: add virt2memseg function 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: Mon, 09 Apr 2018 18:01:43 -0000 This can be used as a virt2iova function that only looks up memory that is owned by DPDK (as opposed to doing pagemap walks). Using this will result in less dependency on internals of mem API. Signed-off-by: Anatoly Burakov Tested-by: Santosh Shukla Tested-by: Hemant Agrawal --- lib/librte_eal/common/eal_common_memory.c | 37 ++++++++++++++++++++++++++++++ lib/librte_eal/common/include/rte_memory.h | 11 +++++++++ lib/librte_eal/rte_eal_version.map | 1 + 3 files changed, 49 insertions(+) diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c index ea3c5a7..fd78d2f 100644 --- a/lib/librte_eal/common/eal_common_memory.c +++ b/lib/librte_eal/common/eal_common_memory.c @@ -161,6 +161,43 @@ rte_mem_iova2virt(rte_iova_t iova) return vi.virt; } +struct virtms { + const void *virt; + struct rte_memseg *ms; +}; +static int +find_memseg(const struct rte_memseg *ms, void *arg) +{ + struct virtms *vm = arg; + + if (arg >= ms->addr && arg < RTE_PTR_ADD(ms->addr, ms->len)) { + struct rte_memseg *memseg, *found_ms; + int idx; + + memseg = rte_eal_get_configuration()->mem_config->memseg; + idx = ms - memseg; + found_ms = &memseg[idx]; + + vm->ms = found_ms; + return 1; + } + return 0; +} + +__rte_experimental struct rte_memseg * +rte_mem_virt2memseg(const void *addr) +{ + struct virtms vm; + + memset(&vm, 0, sizeof(vm)); + + vm.virt = addr; + + rte_memseg_walk(find_memseg, &vm); + + return vm.ms; +} + static int physmem_size(const struct rte_memseg *ms, void *arg) { diff --git a/lib/librte_eal/common/include/rte_memory.h b/lib/librte_eal/common/include/rte_memory.h index 5c60b91..b3d7e61 100644 --- a/lib/librte_eal/common/include/rte_memory.h +++ b/lib/librte_eal/common/include/rte_memory.h @@ -143,6 +143,17 @@ __rte_experimental void * rte_mem_iova2virt(rte_iova_t iova); /** + * Get memseg to which a particular virtual address belongs. + * + * @param virt + * The virtual address. + * @return + * Memseg pointer on success, or NULL on error. + */ +__rte_experimental struct rte_memseg * +rte_mem_virt2memseg(const void *virt); + +/** * Memseg walk function prototype. * * Returning 0 will continue walk diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index dccfc35..79433b7 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -224,6 +224,7 @@ EXPERIMENTAL { rte_log_register_type_and_pick_level; rte_malloc_dump_heaps; rte_mem_iova2virt; + rte_mem_virt2memseg; rte_memseg_contig_walk; rte_memseg_walk; rte_mp_action_register; -- 2.7.4