rte_distributor_single.h(3) DPDK rte_distributor_single.h(3) NAME rte_distributor_single.h SYNOPSIS Macros #define RTE_DISTRIBUTOR_NAMESIZE 32 Functions struct rte_distributor_single * rte_distributor_create_single (const char *name, unsigned int socket_id, unsigned int num_workers) int rte_distributor_process_single (struct rte_distributor_single *d, struct rte_mbuf **mbufs, unsigned int num_mbufs) int rte_distributor_returned_pkts_single (struct rte_distributor_single *d, struct rte_mbuf **mbufs, unsigned int max_mbufs) int rte_distributor_flush_single (struct rte_distributor_single *d) void rte_distributor_clear_returns_single (struct rte_distributor_single *d) struct rte_mbuf * rte_distributor_get_pkt_single (struct rte_distribu- tor_single *d, unsigned int worker_id, struct rte_mbuf *oldpkt) int rte_distributor_return_pkt_single (struct rte_distributor_single *d, unsigned int worker_id, struct rte_mbuf *mbuf) void rte_distributor_request_pkt_single (struct rte_distributor_single *d, unsigned int worker_id, struct rte_mbuf *oldpkt) struct rte_mbuf * rte_distributor_poll_pkt_single (struct rte_distribu- tor_single *d, unsigned int worker_id) Detailed Description RTE distributor The distributor is a component which is designed to pass packets one-at-a- time to workers, with dynamic load balancing. Definition in file rte_distributor_single.h. Macro Definition Documentation #define RTE_DISTRIBUTOR_NAMESIZE 32 Length of name for instance Definition at line 20 of file rte_distributor_single.h. Function Documentation struct rte_distributor_single * rte_distributor_create_single (const char * name, unsigned int socket_id, unsigned int num_workers) Function to create a new distributor instance Reserves the memory needed for the distributor operation and initializes the distributor to work with the configured number of workers. Parameters name The name to be given to the distributor instance. socket_id The NUMA node on which the memory is to be allocated num_workers The maximum number of workers that will request packets from this distributor Returns The newly created distributor instance int rte_distributor_process_single (struct rte_distributor_single * d, struct rte_mbuf ** mbufs, unsigned int num_mbufs) Process a set of packets by distributing them among workers that request packets. The distributor will ensure that no two packets that have the same flow id, or tag, in the mbuf will be processed at the same time. The user is advocated to set tag for each mbuf before calling this func- tion. If user doesn't set the tag, the tag value can be various values de- pending on driver implementation and configuration. This is not multi-thread safe and should only be called on a single lcore. Parameters d The distributor instance to be used mbufs The mbufs to be distributed num_mbufs The number of mbufs in the mbufs array Returns The number of mbufs processed. int rte_distributor_returned_pkts_single (struct rte_distributor_single * d, struct rte_mbuf ** mbufs, unsigned int max_mbufs) Get a set of mbufs that have been returned to the distributor by workers This should only be called on the same lcore as rte_distributor_process() Parameters d The distributor instance to be used mbufs The mbufs pointer array to be filled in max_mbufs The size of the mbufs array Returns The number of mbufs returned in the mbufs array. int rte_distributor_flush_single (struct rte_distributor_single * d) Flush the distributor component, so that there are no in-flight or back- logged packets awaiting processing This should only be called on the same lcore as rte_distributor_process() Parameters d The distributor instance to be used Returns The number of queued/in-flight packets that were completed by this call. void rte_distributor_clear_returns_single (struct rte_distributor_single * d) Clears the array of returned packets used as the source for the rte_dis- tributor_returned_pkts() API call. This should only be called on the same lcore as rte_distributor_process() Parameters d The distributor instance to be used struct rte_mbuf * rte_distributor_get_pkt_single (struct rte_distributor_sin- gle * d, unsigned int worker_id, struct rte_mbuf * oldpkt) API called by a worker to get a new packet to process. Any previous packet given to the worker is assumed to have completed processing, and may be op- tionally returned to the distributor via the oldpkt parameter. Parameters d The distributor instance to be used worker_id The worker instance number to use - must be less that num_workers passed at distributor creation time. oldpkt The previous packet, if any, being processed by the worker Returns A new packet to be processed by the worker thread. int rte_distributor_return_pkt_single (struct rte_distributor_single * d, un- signed int worker_id, struct rte_mbuf * mbuf) API called by a worker to return a completed packet without requesting a new packet, for example, because a worker thread is shutting down Parameters d The distributor instance to be used worker_id The worker instance number to use - must be less that num_workers passed at distributor creation time. mbuf The previous packet being processed by the worker void rte_distributor_request_pkt_single (struct rte_distributor_single * d, unsigned int worker_id, struct rte_mbuf * oldpkt) API called by a worker to request a new packet to process. Any previous packet given to the worker is assumed to have completed processing, and may be optionally returned to the distributor via the oldpkt parameter. Unlike rte_distributor_get_pkt(), this function does not wait for a new packet to be provided by the distributor. NOTE: after calling this function, rte_distributor_poll_pkt() should be used to poll for the packet requested. The rte_distributor_get_pkt() API should not be used to try and retrieve the new packet. Parameters d The distributor instance to be used worker_id The worker instance number to use - must be less that num_workers passed at distributor creation time. oldpkt The previous packet, if any, being processed by the worker struct rte_mbuf * rte_distributor_poll_pkt_single (struct rte_distribu- tor_single * d, unsigned int worker_id) API called by a worker to check for a new packet that was previously re- quested by a call to rte_distributor_request_pkt(). It does not wait for the new packet to be available, but returns NULL if the request has not yet been fulfilled by the distributor. Parameters d The distributor instance to be used worker_id The worker instance number to use - must be less that num_workers passed at distributor creation time. Returns A new packet to be processed by the worker thread, or NULL if no packet is yet available. Author Generated automatically by Doxygen for DPDK from the source code. Version 25.11.0 Thu Aug 27 2026 rte_distributor_single.h(3)
NAME | SYNOPSIS | Detailed Description | Macro Definition Documentation | Function Documentation | Author
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