These files (cxgb*) are for the Chelsio T3 10 gigabit ethernet card from
the FreeBSD driver by Kip Macy (kmacy@FreeBSD.org).
This commit is contained in:
jklos
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#ifndef _JHASH_H
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#define _JHASH_H
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/* jhash.h: Jenkins hash support.
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*
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* Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net)
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*
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* http://burtleburtle.net/bob/hash/
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*
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* These are the credits from Bob's sources:
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*
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* lookup2.c, by Bob Jenkins, December 1996, Public Domain.
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* hash(), hash2(), hash3, and mix() are externally useful functions.
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* Routines to test the hash are included if SELF_TEST is defined.
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* You can use this free for any purpose. It has no warranty.
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*
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* $FreeBSD: src/sys/dev/cxgb/common/jhash.h,v 1.1 2007/05/25 09:48:19 kmacy Exp $
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*/
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/* NOTE: Arguments are modified. */
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#define __jhash_mix(a, b, c) \
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{ \
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a -= b; a -= c; a ^= (c>>13); \
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b -= c; b -= a; b ^= (a<<8); \
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c -= a; c -= b; c ^= (b>>13); \
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a -= b; a -= c; a ^= (c>>12); \
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b -= c; b -= a; b ^= (a<<16); \
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c -= a; c -= b; c ^= (b>>5); \
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a -= b; a -= c; a ^= (c>>3); \
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b -= c; b -= a; b ^= (a<<10); \
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c -= a; c -= b; c ^= (b>>15); \
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}
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/* The golden ration: an arbitrary value */
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#define JHASH_GOLDEN_RATIO 0x9e3779b9
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/* The most generic version, hashes an arbitrary sequence
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* of bytes. No alignment or length assumptions are made about
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* the input key.
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*/
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static inline u32 jhash(const void *key, u32 length, u32 initval)
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{
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u32 a, b, c, len;
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const u8 *k = key;
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len = length;
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a = b = JHASH_GOLDEN_RATIO;
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c = initval;
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while (len >= 12) {
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a += (k[0] +((u32)k[1]<<8) +((u32)k[2]<<16) +((u32)k[3]<<24));
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b += (k[4] +((u32)k[5]<<8) +((u32)k[6]<<16) +((u32)k[7]<<24));
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c += (k[8] +((u32)k[9]<<8) +((u32)k[10]<<16)+((u32)k[11]<<24));
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__jhash_mix(a,b,c);
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k += 12;
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len -= 12;
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}
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c += length;
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switch (len) {
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case 11: c += ((u32)k[10]<<24);
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case 10: c += ((u32)k[9]<<16);
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case 9 : c += ((u32)k[8]<<8);
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case 8 : b += ((u32)k[7]<<24);
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case 7 : b += ((u32)k[6]<<16);
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case 6 : b += ((u32)k[5]<<8);
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case 5 : b += k[4];
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case 4 : a += ((u32)k[3]<<24);
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case 3 : a += ((u32)k[2]<<16);
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case 2 : a += ((u32)k[1]<<8);
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case 1 : a += k[0];
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};
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__jhash_mix(a,b,c);
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return c;
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}
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/* A special optimized version that handles 1 or more of u32s.
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* The length parameter here is the number of u32s in the key.
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*/
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static inline u32 jhash2(u32 *k, u32 length, u32 initval)
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{
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u32 a, b, c, len;
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a = b = JHASH_GOLDEN_RATIO;
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c = initval;
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len = length;
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while (len >= 3) {
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a += k[0];
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b += k[1];
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c += k[2];
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__jhash_mix(a, b, c);
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k += 3; len -= 3;
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}
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c += length * 4;
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switch (len) {
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case 2 : b += k[1];
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case 1 : a += k[0];
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};
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__jhash_mix(a,b,c);
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return c;
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}
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/* A special ultra-optimized versions that knows they are hashing exactly
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* 3, 2 or 1 word(s).
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*
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* NOTE: In partilar the "c += length; __jhash_mix(a,b,c);" normally
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* done at the end is not done here.
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*/
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static inline u32 jhash_3words(u32 a, u32 b, u32 c, u32 initval)
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{
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a += JHASH_GOLDEN_RATIO;
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b += JHASH_GOLDEN_RATIO;
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c += initval;
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__jhash_mix(a, b, c);
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return c;
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}
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static inline u32 jhash_2words(u32 a, u32 b, u32 initval)
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{
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return jhash_3words(a, b, 0, initval);
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}
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static inline u32 jhash_1word(u32 a, u32 initval)
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{
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return jhash_3words(a, 0, 0, initval);
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}
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#endif /* _JHASH_H */
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@ -0,0 +1,173 @@
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/**************************************************************************
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Copyright (c) 2007, Chelsio Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the Chelsio Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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$FreeBSD: src/sys/dev/cxgb/ulp/toecore/toedev.h,v 1.1 2007/05/25 16:17:59 kmacy Exp $
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***************************************************************************/
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#ifndef _OFFLOAD_DEV_H_
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#define _OFFLOAD_DEV_H_
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/* Parameter values for offload_get_phys_egress() */
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enum {
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TOE_OPEN,
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TOE_FAILOVER,
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};
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/* Parameter values for toe_failover() */
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enum {
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TOE_ACTIVE_SLAVE,
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TOE_LINK_DOWN,
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TOE_LINK_UP,
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TOE_RELEASE,
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TOE_RELEASE_ALL,
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};
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#define TOENAMSIZ 16
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/* belongs in linux/netdevice.h */
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#define NETIF_F_TCPIP_OFFLOAD (1 << 15)
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/* Get the toedev associated with a ifnet */
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#define TOEDEV(netdev) (*(struct toedev **)&(netdev)->if_softc)
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/* offload type ids */
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enum {
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TOE_ID_CHELSIO_T1 = 1,
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TOE_ID_CHELSIO_T1C,
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TOE_ID_CHELSIO_T2,
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TOE_ID_CHELSIO_T3,
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TOE_ID_CHELSIO_T3B,
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};
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struct offload_id {
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unsigned int id;
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unsigned long data;
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};
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struct ifnet;
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struct rt_entry;
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struct tom_info;
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struct sysctl_oid;
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struct socket;
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struct mbuf;
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enum toetype {
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T3A = 0,
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T3B
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};
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}}}
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struct toedev {
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char name[TOENAMSIZ]; /* TOE device name */
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enum toetype type;
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struct adapter *adapter;
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unsigned int ttid; /* TOE type id */
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unsigned long flags; /* device flags */
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unsigned int mtu; /* max size of TX offloaded data */
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unsigned int nconn; /* max # of offloaded connections */
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struct ifnet *lldev; /* LL device associated with TOE messages */
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const struct tom_info *offload_mod; /* attached TCP offload module */
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struct sysctl_oid *sysctl_root; /* root of proc dir for this TOE */
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TAILQ_ENTRY(toedev) ofld_entry; /* for list linking */
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int (*open)(struct toedev *dev);
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int (*close)(struct toedev *dev);
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int (*can_offload)(struct toedev *dev, struct socket *so);
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int (*connect)(struct toedev *dev, struct socket *so,
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struct ifnet *egress_ifp);
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int (*send)(struct toedev *dev, struct mbuf *m);
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int (*recv)(struct toedev *dev, struct mbuf **m, int n);
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int (*ctl)(struct toedev *dev, unsigned int req, void *data);
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void (*neigh_update)(struct toedev *dev, struct rtentry *neigh);
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void (*failover)(struct toedev *dev, struct ifnet *bond_ifp,
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struct ifnet *ndev, int event);
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void *priv; /* driver private data */
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void *l2opt; /* optional layer 2 data */
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void *l3opt; /* optional layer 3 data */
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void *l4opt; /* optional layer 4 data */
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void *ulp; /* ulp stuff */
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};
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struct tom_info {
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int (*attach)(struct toedev *dev, const struct offload_id *entry);
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int (*detach)(struct toedev *dev);
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const char *name;
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const struct offload_id *id_table;
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TAILQ_ENTRY(tom_info) entry;
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};
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static inline void init_offload_dev(struct toedev *dev)
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{
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}
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extern int register_tom(struct tom_info *t);
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extern int unregister_tom(struct tom_info *t);
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extern int register_toedev(struct toedev *dev, const char *name);
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extern int unregister_toedev(struct toedev *dev);
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extern int activate_offload(struct toedev *dev);
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extern int toe_send(struct toedev *dev, struct mbuf *m);
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extern struct ifnet *offload_get_phys_egress(struct ifnet *dev,
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struct socket *so,
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int context);
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#if defined(CONFIG_TCP_OFFLOAD_MODULE)
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static inline int toe_receive_mbuf(struct toedev *dev, struct mbuf **m,
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int n)
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{
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return dev->recv(dev, m, n);
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}
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extern int prepare_tcp_for_offload(void);
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extern void restore_tcp_to_nonoffload(void);
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#elif defined(CONFIG_TCP_OFFLOAD)
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extern int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n);
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#endif
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#if defined(CONFIG_TCP_OFFLOAD) || \
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(defined(CONFIG_TCP_OFFLOAD_MODULE) && defined(MODULE))
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extern void toe_neigh_update(struct rtentry *neigh);
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extern void toe_failover(struct ifnet *bond_ifp,
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struct ifnet *fail_ifp, int event);
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extern int toe_enslave(struct ifnet *bond_ifp,
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struct ifnet *slave_ifp);
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#else
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static inline void toe_neigh_update(struct ifnet *neigh) {}
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static inline void toe_failover(struct ifnet *bond_ifp,
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struct ifnet *fail_ifp, int event)
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{}
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static inline int toe_enslave(struct ifnet *bond_ifp,
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struct ifnet *slave_ifp)
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{
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return 0;
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}
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#endif /* CONFIG_TCP_OFFLOAD */
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#endif /* _OFFLOAD_DEV_H_ */
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