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 C2CDD682C for ; Sun, 5 Oct 2014 01:08:57 +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 s94NFv0i154355; Sat, 4 Oct 2014 18:15:57 -0500 Received: (from keithw@localhost) by keithw-W2600CR.windriver.com (8.14.4/8.14.4/Submit) id s94NFvK4154350; Sat, 4 Oct 2014 18:15:57 -0500 From: Keith Wiles To: dev@dpdk.org Date: Sat, 4 Oct 2014 18:15:55 -0500 Message-Id: <1412464555-154270-1-git-send-email-keith.wiles@windriver.com> X-Mailer: git-send-email 2.1.0 Subject: [dpdk-dev] [PATCH 1/1] 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: Sat, 04 Oct 2014 23:08:58 -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(). Signed-off-by: Keith Wiles --- lib/librte_mbuf/rte_mbuf.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index 1c6e115..f298621 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -546,6 +546,41 @@ static inline void rte_pktmbuf_reset(struct rte_mbuf *m) } /** + * @internal Allocate a list of mbufs from mempool *mp*. + * The use of that function is reserved for RTE internal needs. + * Please use rte_pktmbuf_alloc_bulk(). + * + * @param mp + * The mempool from which mbuf is allocated. + * @param m_list + * The array to place the allocated rte_mbufs pointers. + * @param cnt + * The number of mbufs to allocate + * @return + * - 0 if the number of mbufs allocated was ok + * - <0 is an ERROR. + */ +static inline int __rte_mbuf_raw_alloc_bulk(struct rte_mempool *mp, struct rte_mbuf *m_list[], int cnt) +{ + struct rte_mbuf *m; + int ret; + + ret = rte_mempool_get_bulk(mp, (void **)m_list, cnt); + if ( ret == 0 ) { + int i; + for(i = 0; i < cnt; i++) { + m = *m_list++; +#ifdef RTE_MBUF_REFCNT + rte_mbuf_refcnt_set(m, 1); +#endif /* RTE_MBUF_REFCNT */ + rte_pktmbuf_reset(m); + } + ret = cnt; + } + return ret; +} + +/** * Allocate a new mbuf from a mempool. * * This new mbuf contains one segment, which has a length of 0. The pointer @@ -671,6 +706,32 @@ __rte_pktmbuf_prefree_seg(struct rte_mbuf *m) } /** + * Allocate a list of mbufs from a mempool into a mbufs 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 list. + * @param cnt + * Number of slots in the m_list array to fill. + * @return + * - The number of valid mbufs pointers in the m_list array. + * - Zero if the request cnt could not be allocated. + */ +static inline int __attribute__((always_inline)) +rte_pktmbuf_alloc_bulk(struct rte_mempool *mp, struct rte_mbuf *m_list[], int16_t cnt) +{ + return __rte_mbuf_raw_alloc_bulk(mp, m_list, cnt); +} + +/** * Free a segment of a packet mbuf into its original mempool. * * Free an mbuf, without parsing other segments in case of chained @@ -708,6 +769,22 @@ 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 list. + */ +static inline void 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