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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR03MB2703 Subject: [dpdk-dev] [PATCH v2 3/5] mbuf: support register mempool Hw ops name APIs 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, 15 Jan 2018 06:12:33 -0000 With this patch the specific HW mempool are no longer required to be specified in the config file at compile. A default platform hw mempool can be detected dynamically and published to config at run time. Only one type of HW mempool can be active default. Signed-off-by: Hemant Agrawal --- lib/librte_mbuf/Makefile | 1 + lib/librte_mbuf/rte_mbuf.c | 42 +++++++++++++++++++++++++++++++++--- lib/librte_mbuf/rte_mbuf.h | 20 +++++++++++++++++ lib/librte_mbuf/rte_mbuf_version.map | 8 +++++++ 4 files changed, 68 insertions(+), 3 deletions(-) diff --git a/lib/librte_mbuf/Makefile b/lib/librte_mbuf/Makefile index 398f724..85c4f9e 100644 --- a/lib/librte_mbuf/Makefile +++ b/lib/librte_mbuf/Makefile @@ -7,6 +7,7 @@ include $(RTE_SDK)/mk/rte.vars.mk LIB = librte_mbuf.a CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 +CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common LDLIBS += -lrte_eal -lrte_mempool EXPORT_MAP := rte_mbuf_version.map diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c index c085c37..fd3b6f5 100644 --- a/lib/librte_mbuf/rte_mbuf.c +++ b/lib/librte_mbuf/rte_mbuf.c @@ -58,6 +58,7 @@ #include #include #include +#include /* * ctrlmbuf constructor, given as a callback function to @@ -148,6 +149,43 @@ rte_pktmbuf_init(struct rte_mempool *mp, m->next = NULL; } +int +rte_mbuf_register_platform_mempool_ops(const char *ops_name) +{ + if (internal_config.plat_mbuf_pool_ops_name == NULL) { + internal_config.plat_mbuf_pool_ops_name = ops_name; + return 0; + } + RTE_LOG(ERR, MBUF, + "%s is already registered as platform mbuf pool ops\n", + internal_config.plat_mbuf_pool_ops_name); + return -EACCES; +} + +const char * +rte_mbuf_platform_mempool_ops(void) +{ + return internal_config.plat_mbuf_pool_ops_name; +} + +/* Return mbuf pool ops name */ +static const char * +rte_mbuf_best_mempool_ops(void) +{ + /* User defined mempool ops takes the priority */ + const char *best_ops = rte_eal_mbuf_default_mempool_ops(); + if (best_ops) + return best_ops; + + /* Next choice is platform configured mempool ops */ + best_ops = rte_mbuf_platform_mempool_ops(); + if (best_ops) + return best_ops; + + /* Last choice is to use the compile time config pool */ + return RTE_MBUF_DEFAULT_MEMPOOL_OPS; +} + /* helper to create a mbuf pool */ struct rte_mempool * rte_pktmbuf_pool_create(const char *name, unsigned n, @@ -176,9 +214,7 @@ rte_pktmbuf_pool_create(const char *name, unsigned n, if (mp == NULL) return NULL; - mp_ops_name = rte_eal_mbuf_default_mempool_ops(); - if (mp_ops_name == NULL) - mp_ops_name = RTE_MBUF_DEFAULT_MEMPOOL_OPS; + mp_ops_name = rte_mbuf_best_mempool_ops(); ret = rte_mempool_set_ops_byname(mp, mp_ops_name, NULL); if (ret != 0) { RTE_LOG(ERR, MBUF, "error setting mempool handler\n"); diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index e4e3917..d26e8cd 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -1081,6 +1081,26 @@ rte_pktmbuf_pool_create(const char *name, unsigned n, int socket_id); /** + * Register the platform supported pktmbuf HW pool + * + * @param pool ops name + * @return + * - 0: Success + * - -EACCES: platform mempool is already registered. + */ +int +rte_mbuf_register_platform_mempool_ops(const char *ops_name); + +/** + * Get registered platform supported pool ops name for mbuf + * + * @return + * returns platform pool ops name. + */ +const char* +rte_mbuf_platform_mempool_ops(void); + +/** * Get the data room size of mbufs stored in a pktmbuf_pool * * The data room size is the amount of data that can be stored in a diff --git a/lib/librte_mbuf/rte_mbuf_version.map b/lib/librte_mbuf/rte_mbuf_version.map index 6e2ea84..b8e258f 100644 --- a/lib/librte_mbuf/rte_mbuf_version.map +++ b/lib/librte_mbuf/rte_mbuf_version.map @@ -35,3 +35,11 @@ DPDK_16.11 { rte_get_tx_ol_flag_list; } DPDK_2.1; + +DPDK_18.02 { + global: + + rte_mbuf_platform_mempool_ops; + rte_mbuf_register_platform_mempool_ops; + +} DPDK_16.11; -- 2.7.4