On 3/22/19 2:01 PM, Xiaolong Ye wrote:
This allows applications to create mbuf mempool with specific flags such as MEMPOOL_F_NO_SPREAD if they want fixed size memory objects. Signed-off-by: Qi Zhang <qi.z.zh...@intel.com> Signed-off-by: Xiaolong Ye <xiaolong...@intel.com> --- lib/librte_mbuf/rte_mbuf.c | 29 +++++++++++++++++++----- lib/librte_mbuf/rte_mbuf.h | 45 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 5 deletions(-)
+/** + * Create a mbuf pool with flags. + * + * This function creates and initializes a packet mbuf pool. It is + * a wrapper to rte_mempool functions. + * + * @warning + * @b EXPERIMENTAL: This API may change without prior notice. + * + * @param name + * The name of the mbuf pool. + * @param n + * The number of elements in the mbuf pool. The optimum size (in terms + * of memory usage) for a mempool is when n is a power of two minus one: + * n = (2^q - 1). + * @param cache_size + * Size of the per-core object cache. See rte_mempool_create() for + * details. + * @param priv_size + * Size of application private are between the rte_mbuf structure + * and the data buffer. This value must be aligned to RTE_MBUF_PRIV_ALIGN. + * @param data_room_size + * Size of data buffer in each mbuf, including RTE_PKTMBUF_HEADROOM. + * @param flags + * Flags controlling the behavior of the mempool. See + * rte_mempool_create() for details. + * @param socket_id + * The socket identifier where the memory should be allocated. The + * value can be *SOCKET_ID_ANY* if there is no NUMA constraint for the + * reserved zone. + * @return + * The pointer to the new allocated mempool, on success. NULL on error + * with rte_errno set appropriately. Possible rte_errno values include: + * - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure + * - E_RTE_SECONDARY - function was called from a secondary process instance + * - EINVAL - cache size provided is too large, or priv_size is not aligned. + * - ENOSPC - the maximum number of memzones has already been allocated + * - EEXIST - a memzone with the same name already exists + * - ENOMEM - no appropriate memory area found in which to create memzone + */ +struct rte_mempool * __rte_experimental +rte_pktmbuf_pool_create_with_flags(const char *name, unsigned int n, + unsigned int cache_size, uint16_t priv_size, uint16_t data_room_size, + unsigned int flags, int socket_id); + /** * Create a mbuf pool with a given mempool ops name *
You need to add it to rte_mbuf_version.map too.
