/* * Copyright (c) 2016 Adrian Chadd <adrian@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef __LIBRSS_H__ #define __LIBRSS_H__ struct rss_config { int rss_ncpus; int rss_nbuckets; int rss_basecpu; int *rss_bucket_map; }; typedef enum { RSS_BUCKET_TYPE_NONE = 0, RSS_BUCKET_TYPE_KERNEL_ALL = 1, RSS_BUCKET_TYPE_KERNEL_TX = 2, RSS_BUCKET_TYPE_KERNEL_RX = 3, RSS_BUCKET_TYPE_MAX = 3, } rss_bucket_type_t; typedef void rss_bucket_rebalance_cb_t(void *arg); /* * Enable/disable whether to allow for multiple bind()s to the * given PCB entry. * * This must be done before bind(). */ extern int rss_sock_set_bindmulti(int fd, int af, int val); /* * Set the RSS bucket for the given file descriptor. * * This must be done before bind(). */ extern int rss_sock_set_rss_bucket(int fd, int af, int rss_bucket); /* * Enable or disable receiving RSS/flowid information on * received UDP frames. */ extern int rss_sock_set_recvrss(int fd, int af, int val); /* * Fetch RSS configuration information. */ extern struct rss_config * rss_config_get(void); /* * Free an RSS configuration structure. */ extern void rss_config_free(struct rss_config *rc); /* * Return how many RSS buckets there are. */ extern int rss_config_get_bucket_count(struct rss_config *rc); /* * Fetch the cpuset configuration for the given RSS bucket and * type. */ extern int rss_get_bucket_cpuset(struct rss_config *rc, rss_bucket_type_t btype, int bucket, cpuset_t *cs); /* * Set a callback for bucket rebalancing. * * This will occur in a separate thread context rather than * a signal handler. */ extern int rss_set_bucket_rebalance_cb(rss_bucket_rebalance_cb_t *cb, void *cbdata); #endif /* __LIBRSS_H__ */ |