rte_distributor.h

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/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
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 *
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#ifndef _RTE_DISTRIBUTE_H_
#define _RTE_DISTRIBUTE_H_

#ifdef __cplusplus
extern "C" {
#endif

#define RTE_DISTRIBUTOR_NAMESIZE 32 
struct rte_distributor;
struct rte_mbuf;

struct rte_distributor *
rte_distributor_create(const char *name, unsigned socket_id,
                unsigned num_workers);

/*  *** APIS to be called on the distributor lcore ***  */
/*
 * The following APIs are the public APIs which are designed for use on a
 * single lcore which acts as the distributor lcore for a given distributor
 * instance. These functions cannot be called on multiple cores simultaneously
 * without using locking to protect access to the internals of the distributor.
 *
 * NOTE: a given lcore cannot act as both a distributor lcore and a worker lcore
 * for the same distributor instance, otherwise deadlock will result.
 */

int
rte_distributor_process(struct rte_distributor *d,
                struct rte_mbuf **mbufs, unsigned num_mbufs);

int
rte_distributor_returned_pkts(struct rte_distributor *d,
                struct rte_mbuf **mbufs, unsigned max_mbufs);

int
rte_distributor_flush(struct rte_distributor *d);

void
rte_distributor_clear_returns(struct rte_distributor *d);

/*  *** APIS to be called on the worker lcores ***  */
/*
 * The following APIs are the public APIs which are designed for use on
 * multiple lcores which act as workers for a distributor. Each lcore should use
 * a unique worker id when requesting packets.
 *
 * NOTE: a given lcore cannot act as both a distributor lcore and a worker lcore
 * for the same distributor instance, otherwise deadlock will result.
 */

struct rte_mbuf *
rte_distributor_get_pkt(struct rte_distributor *d,
                unsigned worker_id, struct rte_mbuf *oldpkt);

int
rte_distributor_return_pkt(struct rte_distributor *d, unsigned worker_id,
                struct rte_mbuf *mbuf);

void
rte_distributor_request_pkt(struct rte_distributor *d,
                unsigned worker_id, struct rte_mbuf *oldpkt);

struct rte_mbuf *
rte_distributor_poll_pkt(struct rte_distributor *d,
                unsigned worker_id);

#ifdef __cplusplus
}
#endif

#endif