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freebsd/sys/dev/cxgbe/t4_clip.h
Navdeep Parhar 24b98f288d cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.
- Process the list of local IPs once instead of once per adapter.  Add
  addresses from all VNETs to the driver's list but leave hardware
  updates for later when the global VNET/IFADDR list locks have been
  released.

- Add address to the hardware table synchronously when a CLIP entry is
  requested for an address that's not already in there.

- Provide ioctls that allow userspace tools to manage addresses in the
  CLIP table.

- Add a knob (hw.cxgbe.clip_db_auto) that controls whether local IPs are
  automatically added to the CLIP table or not.

MFC after:	2 weeks
Sponsored by:	Chelsio Communications
2021-05-23 16:07:29 -07:00

51 lines
2.0 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 Chelsio Communications, Inc.
* All rights reserved.
* Written by: Navdeep Parhar <np@FreeBSD.org>
*
* 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 __T4_CLIP_H
#define __T4_CLIP_H
#define CLIP_HASH_SIZE 32
struct clip_entry;
struct in6_addr;
void t4_clip_modload(void);
void t4_clip_modunload(void);
void t4_init_clip_table(struct adapter *);
void t4_destroy_clip_table(struct adapter *);
struct clip_entry *t4_get_clip_entry(struct adapter *, struct in6_addr *, bool);
void t4_hold_clip_entry(struct adapter *, struct clip_entry *);
void t4_release_clip_entry(struct adapter *, struct clip_entry *);
int t4_release_clip_addr(struct adapter *, struct in6_addr *);
int sysctl_clip(SYSCTL_HANDLER_ARGS);
#endif /* __T4_CLIP_H */