From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from keithw-W2600CR.windriver.com (97-94-195-106.dhcp.ftwo.tx.charter.com [97.94.195.106]) by dpdk.org (Postfix) with ESMTP id 655823B5 for ; Mon, 6 Oct 2014 22:19:01 +0200 (CEST) Received: from keithw-W2600CR.windriver.com (localhost.localdomain [127.0.0.1]) by keithw-W2600CR.windriver.com (8.14.4/8.14.4/Debian-4.1ubuntu1) with ESMTP id s96KQ8qR078515 for ; Mon, 6 Oct 2014 15:26:08 -0500 Received: (from keithw@localhost) by keithw-W2600CR.windriver.com (8.14.4/8.14.4/Submit) id s96KQ8ba078514 for dev@dpdk.org; Mon, 6 Oct 2014 15:26:08 -0500 From: Keith Wiles To: dev@dpdk.org Date: Mon, 6 Oct 2014 15:26:08 -0500 Message-Id: <1412627168-78475-1-git-send-email-keith.wiles@windriver.com> X-Mailer: git-send-email 2.1.0 Subject: [dpdk-dev] [PATCH v2] Adding the routines rte_pktmbuf_alloc_bulk() and rte_pktmbuf_free_bulk() X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Oct 2014 20:19:01 -0000 Minor helper routines to mirror the mempool routines and remove the code from applications. The ixgbe_rxtx_vec.c routine could be changed to use the ret_pktmbuf_alloc_bulk() routine inplace of rte_mempool_get_bulk(). Combined __rte_mbuf_raw_alloc_bulk into the rte_pktmbuf_alloc_bulk function. Fixed up the comments to state the correct return values. Signed-off-by: Keith Wiles --- lib/librte_mbuf/rte_mbuf.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index 1c6e115..337611b 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -671,6 +671,44 @@ __rte_pktmbuf_prefree_seg(struct rte_mbuf *m) } /** + * Allocate a list of mbufs from a mempool into a mbuf array. + * + * This mbuf list contains one segment per mbuf, which has a length of 0. The pointer + * to data is initialized to have some bytes of headroom in the buffer + * (if buffer size allows). + * + * The routine is just a simple wrapper routine to reduce code in the application and + * provide a cleaner API for multiple mbuf requests. + * + * @param mp + * The mempool from which the mbuf is allocated. + * @param m_list + * An array of mbuf pointers, cnt must be less then or equal to the size of the array. + * @param cnt + * Number of slots in the m_list array to fill. + * @return + * - cnt is returned if a successful allocation. + * - <0 negative number is an error code. + */ +static inline int __attribute__((always_inline)) +rte_pktmbuf_alloc_bulk(struct rte_mempool *mp, struct rte_mbuf *m_list[], int16_t cnt) +{ + int ret; + + ret = rte_mempool_get_bulk(mp, (void **)m_list, cnt); + if ( ret == 0 ) { + ret = cnt; + while(cnt--) { +#ifdef RTE_MBUF_REFCNT + rte_mbuf_refcnt_set(*m_list, 1); +#endif /* RTE_MBUF_REFCNT */ + rte_pktmbuf_reset(*m_list++); + } + } + return ret; +} + +/** * Free a segment of a packet mbuf into its original mempool. * * Free an mbuf, without parsing other segments in case of chained @@ -708,6 +746,23 @@ static inline void rte_pktmbuf_free(struct rte_mbuf *m) } } +/** + * Free a list of packet mbufs back into its original mempool. + * + * Free a list of mbufs by calling rte_pktmbuf_free() in a loop as a wrapper function. + * + * @param m_list + * An array of rte_mbuf pointers to be freed. + * @param npkts + * Number of packets to free in m_list. + */ +static inline void __attribute__((always_inline)) +rte_pktmbuf_free_bulk(struct rte_mbuf *m_list[], int16_t npkts) +{ + while(npkts--) + rte_pktmbuf_free(*m_list++); +} + #ifdef RTE_MBUF_REFCNT /** -- 2.1.0