X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=doc%2Fguides%2Fsample_app_ug%2Fl2_forward_job_stats.rst;fp=doc%2Fguides%2Fsample_app_ug%2Fl2_forward_job_stats.rst;h=1029cc8ff53e437993f5ea8463c1c20072812102;hb=7595afa4d30097c1177b69257118d8ad89a539be;hp=2444e36e345134e21bec72d18315a61384197806;hpb=ce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6;p=deb_dpdk.git diff --git a/doc/guides/sample_app_ug/l2_forward_job_stats.rst b/doc/guides/sample_app_ug/l2_forward_job_stats.rst index 2444e36e..1029cc8f 100644 --- a/doc/guides/sample_app_ug/l2_forward_job_stats.rst +++ b/doc/guides/sample_app_ug/l2_forward_job_stats.rst @@ -140,7 +140,7 @@ thousands separator printing, issue the command: .. code-block:: console - $ ./build/l2fwd-jobstats -c f -n 4 -- -q 8 -p ffff -l + $ ./build/l2fwd-jobstats -l 0-3 -n 4 -- -q 8 -p ffff -l Refer to the *DPDK Getting Started Guide* for general information on running applications and the Environment Abstraction Layer (EAL) options. @@ -193,36 +193,25 @@ and the application to store network packet data: .. code-block:: c /* create the mbuf pool */ - l2fwd_pktmbuf_pool = - rte_mempool_create("mbuf_pool", NB_MBUF, - MBUF_SIZE, 32, - sizeof(struct rte_pktmbuf_pool_private), - rte_pktmbuf_pool_init, NULL, - rte_pktmbuf_init, NULL, - rte_socket_id(), 0); + l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, + MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, + rte_socket_id()); if (l2fwd_pktmbuf_pool == NULL) rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); The rte_mempool is a generic structure used to handle pools of objects. -In this case, it is necessary to create a pool that will be used by the driver, -which expects to have some reserved space in the mempool structure, -sizeof(struct rte_pktmbuf_pool_private) bytes. -The number of allocated pkt mbufs is NB_MBUF, with a size of MBUF_SIZE each. -A per-lcore cache of 32 mbufs is kept. +In this case, it is necessary to create a pool that will be used by the driver. +The number of allocated pkt mbufs is NB_MBUF, with a data room size of +RTE_MBUF_DEFAULT_BUF_SIZE each. +A per-lcore cache of MEMPOOL_CACHE_SIZE mbufs is kept. The memory is allocated in rte_socket_id() socket, but it is possible to extend this code to allocate one mbuf pool per socket. -Two callback pointers are also given to the rte_mempool_create() function: - -* The first callback pointer is to rte_pktmbuf_pool_init() and is used - to initialize the private data of the mempool, which is needed by the driver. - This function is provided by the mbuf API, but can be copied and extended by the developer. - -* The second callback pointer given to rte_mempool_create() is the mbuf initializer. - The default is used, that is, rte_pktmbuf_init(), which is provided in the rte_mbuf library. - If a more complex application wants to extend the rte_pktmbuf structure for its own needs, - a new function derived from rte_pktmbuf_init( ) can be created. +The rte_pktmbuf_pool_create() function uses the default mbuf pool and mbuf +initializers, respectively rte_pktmbuf_pool_init() and rte_pktmbuf_init(). +An advanced application may want to use the mempool API to create the +mbuf pool with more control. Driver Initialization ~~~~~~~~~~~~~~~~~~~~~