2 * Copyright (c) 2016 Adrian Chadd <adrian@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 RSS_BUCKET_TYPE_NONE = 0,
41 RSS_BUCKET_TYPE_KERNEL_ALL = 1,
42 RSS_BUCKET_TYPE_KERNEL_TX = 2,
43 RSS_BUCKET_TYPE_KERNEL_RX = 3,
44 RSS_BUCKET_TYPE_MAX = 3,
47 typedef void rss_bucket_rebalance_cb_t(void *arg);
50 * Enable/disable whether to allow for multiple bind()s to the
53 * This must be done before bind().
55 extern int rss_sock_set_bindmulti(int fd, int af, int val);
58 * Set the RSS bucket for the given file descriptor.
60 * This must be done before bind().
62 extern int rss_sock_set_rss_bucket(int fd, int af, int rss_bucket);
65 * Enable or disable receiving RSS/flowid information on
66 * received UDP frames.
68 extern int rss_sock_set_recvrss(int fd, int af, int val);
71 * Fetch RSS configuration information.
73 extern struct rss_config * rss_config_get(void);
76 * Free an RSS configuration structure.
78 extern void rss_config_free(struct rss_config *rc);
81 * Return how many RSS buckets there are.
83 extern int rss_config_get_bucket_count(struct rss_config *rc);
86 * Fetch the cpuset configuration for the given RSS bucket and
89 extern int rss_get_bucket_cpuset(struct rss_config *rc,
90 rss_bucket_type_t btype, int bucket, cpuset_t *cs);
93 * Set a callback for bucket rebalancing.
95 * This will occur in a separate thread context rather than
98 extern int rss_set_bucket_rebalance_cb(rss_bucket_rebalance_cb_t *cb,
101 #endif /* __LIBRSS_H__ */