538 lines
16 KiB
C
538 lines
16 KiB
C
/*******************************************************************************
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Copyright (C) Marvell International Ltd. and its affiliates
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This software file (the "File") is owned and distributed by Marvell
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International Ltd. and/or its affiliates ("Marvell") under the following
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alternative licensing terms. Once you have made an election to distribute the
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File under one of the following license alternatives, please (i) delete this
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introductory statement regarding license alternatives, (ii) delete the two
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license alternatives that you have not elected to use and (iii) preserve the
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Marvell copyright notice above.
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********************************************************************************
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Marvell Commercial License Option
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If you received this File from Marvell and you have entered into a commercial
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license agreement (a "Commercial License") with Marvell, the File is licensed
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to you under the terms of the applicable Commercial License.
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********************************************************************************
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Marvell GPL License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File in accordance with the terms and conditions of the General
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Public License Version 2, June 1991 (the "GPL License"), a copy of which is
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available along with the File in the license.txt file or by writing to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
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on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
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THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
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WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
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DISCLAIMED. The GPL License provides additional details about this warranty
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disclaimer.
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********************************************************************************
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Marvell BSD License Option
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If you received this File from Marvell, you may opt to use, redistribute and/or
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modify this File under the following licensing terms.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* 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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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Marvell nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************/
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/*******************************************************************************
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* mvNfp.h - Header File for Marvell NFP (Routing and NAT)
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*
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* DESCRIPTION:
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* This header file contains macros, typedefs and function declarations
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* specific to the Marvell Network Fast Processing (Routing and NAT).
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*
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* DEPENDENCIES:
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* None.
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*
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*******************************************************************************/
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#ifndef __mvNfp_h__
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#define __mvNfp_h__
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/* includes */
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#include "mvTypes.h"
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#include "mvCommon.h"
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#include "mvStack.h"
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#include "mv802_3.h"
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#include "eth/mvEth.h"
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#include "mvSysHwConfig.h"
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/* defines */
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#define ETH_FP_IFINDEX_MAX 128
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#define ETH_FP_PPPOE_HDR 8 /* PPP header is 6, PPPoE header is 2 */
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#define ETH_FP_MTU 1518 + ETH_MV_HEADER_SIZE /* maximum frame size incluing MH */
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#define ETH_FP_PPPOE_MTU (ETH_FP_MTU - ETH_FP_PPPOE_HDR) /* maximum frame size for PPPoE */
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/* uncomment to open some debug prints on adding and updating NFP rules */
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#define MV_FP_DEBUG
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#undef MV_FP_DEBUG
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#ifdef MV_FP_DEBUG
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# define MV_NFP_DBG(fmt, arg...) printk(KERN_INFO fmt, ##arg)
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#else
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# define MV_NFP_DBG(fmt, arg...)
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#endif
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#ifdef MV_FP_STATISTICS
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# define MV_NFP_STAT(CODE) CODE;
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#else
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# define MV_NFP_STAT(CODE)
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#endif
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/* enumerations */
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typedef enum {
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MV_FP_ROUTE_CMD, /* perform NFP routing */
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MV_FP_DROP_CMD, /* drop packet */
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MV_FP_TO_STACK_CMD, /* pass packet to linux stack */
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MV_FP_DIP_CMD, /* replace DIP */
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MV_FP_SIP_CMD, /* replace SIP */
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MV_FP_DPORT_CMD, /* replace DPORT */
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MV_FP_SPORT_CMD, /* replace SPORT */
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MV_FP_BRIDGE_CMD, /* perform fast path bridging */
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MV_FP_PPP_CMD, /* perform fast path pppoe */
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} MV_FP_CMD_TYPE;
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typedef enum {
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MV_NFP_DROP = -3,
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MV_NFP_STOLEN = -2,
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MV_NFP_NONE = -1,
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/* positive values are valid */
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} MV_NFP_IF_INDEX;
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#define MV_FP_DIP_CMD_MAP (1 << MV_FP_DIP_CMD)
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#define MV_FP_DPORT_CMD_MAP (1 << MV_FP_DPORT_CMD)
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#define MV_FP_DNAT_CMD_MAP (MV_FP_DIP_CMD_MAP | MV_FP_DPORT_CMD_MAP)
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#define MV_FP_SIP_CMD_MAP (1 << MV_FP_SIP_CMD)
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#define MV_FP_SPORT_CMD_MAP (1 << MV_FP_SPORT_CMD)
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#define MV_FP_SNAT_CMD_MAP (MV_FP_SIP_CMD_MAP | MV_FP_SPORT_CMD_MAP)
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typedef enum {
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MV_FP_STATIC_RULE, /* a static rule created by the user */
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MV_FP_DYNAMIC_RULE /* a dynamic rule */
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} MV_FP_RULE_TYPE;
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/* structure definitions (used by the NFP Manager and the NFP Database)*/
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typedef struct {
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MV_FP_CMD_TYPE actionType;
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MV_U32 old_count;
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MV_U32 new_count;
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MV_FP_RULE_TYPE ruleType;
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int dnat_aware_refcnt;
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int snat_aware_refcnt;
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} MV_FP_RULE_MGMT_INFO;
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typedef struct {
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MV_U32 dstIp;
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MV_U32 srcIp;
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MV_U32 defGtwIp;
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MV_U8 dscp;
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MV_U8 txq;
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MV_U16 reserved1;
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MV_U8 reserved2;
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MV_U8 aware_flags;
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/* dstMac should be 2 byte aligned */
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MV_U8 dstMac[MV_MAC_ADDR_SIZE];
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MV_U8 srcMac[MV_MAC_ADDR_SIZE];
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MV_U8 inIfIndex; /* Linux interface index */
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MV_U8 outIfIndex; /* Linux interface index */
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} MV_FP_RULE_ROUTING_INFO;
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typedef struct _mv_fp_rule {
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struct _mv_fp_rule *next;
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MV_FP_RULE_MGMT_INFO mgmtInfo;
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MV_FP_RULE_ROUTING_INFO routingInfo;
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} MV_FP_RULE;
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struct ruleHashBucket {
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MV_FP_RULE *ruleChain; /* This is an entry in the rule hash table. */
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/* Add additional fields (such as a lock) here if required */
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};
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#define MV_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 MV_JHASH_GOLDEN_RATIO 0x9e3779b9
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extern MV_U32 fp_ip_jhash_iv;
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static INLINE MV_U32 mv_jhash_3words(MV_U32 a, MV_U32 b, MV_U32 c, MV_U32 initval)
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{
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a += MV_JHASH_GOLDEN_RATIO;
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b += MV_JHASH_GOLDEN_RATIO;
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c += initval;
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MV_JHASH_MIX(a, b, c);
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return c;
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}
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#ifdef CONFIG_MV_ETH_NFP_NAT_SUPPORT
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typedef struct _mv_fp_nat_rule {
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struct _mv_fp_nat_rule *next;
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MV_U32 count;
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MV_U32 new_count;
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/* Original packet information */
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/* Fields will contain invalid values if they are irrelevant */
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MV_U32 srcIp;
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MV_U32 dstIp;
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MV_U16 srcPort;
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MV_U16 dstPort;
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MV_U8 proto;
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/* NAT information */
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MV_U8 flags;
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MV_U32 newIp;
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MV_U16 newPort;
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} MV_FP_NAT_RULE;
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struct natRuleHashBucket {
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MV_FP_NAT_RULE *natRuleChain; /* This is an entry in the NAT rule hash table. */
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/* Add additional fields (such as a lock) here if required */
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};
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extern struct natRuleHashBucket *natRuleDb;
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extern MV_U32 natRuleDbSize;
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extern MV_U32 natRuleUpdateCount, natRuleSetCount, natRuleDeleteCount;
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extern MV_U32 natHashMaxDepth;
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#endif /* CONFIG_MV_ETH_NFP_NAT_SUPPORT */
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/*
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* PPPoE Support
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*/
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#ifdef CONFIG_MV_ETH_NFP_PPP
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typedef struct
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{
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MV_U16 tag;
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MV_U8 da[MV_MAC_ADDR_SIZE];
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MV_U8 sa[MV_MAC_ADDR_SIZE];
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MV_U16 ethertype;
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MV_U8 version;
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MV_U8 code;
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MV_U16 session;
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MV_U16 len;
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MV_U16 proto;
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} __attribute__((packed)) MV_PPPoE_HEADER;
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typedef struct {
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union {
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MV_PPPoE_HEADER ppp;
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MV_U32 u32[6];
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} u;
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MV_U32 if_ppp; /* e.g. ppp0 */
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MV_U32 if_eth; /* e.g. eth0 */
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MV_U32 channel;
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} MV_FP_RULE_PPP_INFO;
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typedef struct _mv_fp_ppp_rule {
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struct _mv_fp_ppp_rule *next;
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MV_FP_RULE_MGMT_INFO mgmtInfo;
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MV_FP_RULE_PPP_INFO pppInfo;
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} MV_FP_PPP_RULE;
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extern MV_FP_PPP_RULE pppOpen[];
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#endif /* CONFIG_MV_ETH_NFP_PPP */
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/*
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* 802.1D Support
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*/
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#ifdef CONFIG_MV_ETH_NFP_FDB_SUPPORT
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#define MV_FP_FDB_IS_LOCAL 1
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typedef struct {
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MV_U16 flags;
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MV_U8 mac[6];
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MV_U32 ifIndex;
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MV_U32 bridge;
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} MV_FP_RULE_FDB_INFO;
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typedef struct _mv_fp_fdb_rule {
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struct _mv_fp_fdb_rule *next;
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MV_FP_RULE_MGMT_INFO mgmtInfo;
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MV_FP_RULE_FDB_INFO fdbInfo;
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} MV_FP_FDB_RULE;
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struct fdbRuleHashBucket {
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MV_FP_FDB_RULE *ruleChain;
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};
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extern struct fdbRuleHashBucket *fdbRuleDb;
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extern MV_U32 fdbRuleDbSize;
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extern MV_U32 fdbMember[];
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extern MV_U32 fdbRuleUpdateCount, fdbRuleSetCount, fdbRuleDeleteCount;
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extern MV_U32 fdbHashMaxDepth;
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#endif /* CONFIG_MV_ETH_NFP_FDB_SUPPORT */
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typedef struct
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{
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MV_U32 process;
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MV_U32 route_miss;
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MV_U32 route_hit;
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MV_U32 ip_ttl_expired;
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MV_U32 slowpath;
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MV_U32 multicast;
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MV_U32 non_ip;
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MV_U32 ip_frag;
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MV_U32 vlan_tagged;
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#ifdef CONFIG_MV_ETH_NFP_NAT_SUPPORT
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MV_U32 nat_bad_proto;
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MV_U32 dnat_aware;
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MV_U32 snat_aware;
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MV_U32 dnat_found;
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MV_U32 snat_found;
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MV_U32 dnat_not_found;
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MV_U32 snat_not_found;
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#endif /* CONFIG_MV_ETH_NFP_NAT_SUPPORT */
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#ifdef CONFIG_MV_ETH_NFP_FDB_SUPPORT
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MV_U32 fdb_rx_local;
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MV_U32 fdb_rx_unknown;
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MV_U32 fdb_tx_found;
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MV_U32 fdb_bridged;
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#endif /* CONFIG_MV_ETH_NFP_FDB_SUPPORT */
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#ifdef CONFIG_MV_ETH_NFP_PPP
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MV_U32 ppp_rx;
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MV_U32 ppp_rx_slow;
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MV_U32 ppp_rx_frag;
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MV_U32 ppp_tx;
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MV_U32 ppp_tx_slow;
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MV_U32 ppp_tx_esp;
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MV_U32 ppp_err;
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#endif /* CONFIG_MV_ETH_NFP_PPP */
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#ifdef CONFIG_MV_ETH_NFP_SEC
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MV_U32 sec_in;
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MV_U32 sec_in_drop;
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MV_U32 sec_out;
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MV_U32 sec_out_drop;
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MV_U32 sec_out_slow;
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#endif /* CONFIG_MV_ETH_NFP_SEC */
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} MV_FP_STATS;
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/* Initialize NFP Rule Database (Routing + ARP information table) */
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MV_STATUS mvFpRuleDbInit(MV_U32 dbSize);
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/* Clear NFP Rule Database (Routing + ARP information table) */
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MV_STATUS mvFpRuleDbClear(void);
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/* Free Rule Database memory */
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void mvFpRuleDbDestroy(void);
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/* Print NFP Rule Database (Routing + ARP information table) */
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MV_STATUS mvFpRuleDbPrint(void);
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/* Copy all the information from src_rule to new_rule */
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/* Warning - doesn't perform any checks on memory, just copies */
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/* count is set to zero in new_rule */
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/* Note: the next pointer is not updated . */
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void mvFpRuleCopy(MV_FP_RULE *newRule, const MV_FP_RULE *srcRule);
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/* Get the maximum count value for a rule with srcIp == given ip */
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MV_U32 mvFpMaxArpCountGet(MV_U32 ip);
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/* Get the count value for a rule that matches the given SIP, DIP */
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MV_U32 mvFpRouteCountGet(MV_U32 srcIp, MV_U32 dstIp);
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/* Set a Routing Rule: create a new rule or update an existing rule */
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/* in the Routing + ARP information table */
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MV_STATUS mvFpRuleSet(MV_FP_RULE *rule);
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/* Delete a specified rule from the Routing + ARP information table */
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MV_STATUS mvFpRuleDelete(MV_FP_RULE *rule);
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/* Set a Routing ToS Rule */
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MV_STATUS mvFpToSSet(MV_FP_RULE *rule);
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/* Print a Rule */
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void mvFpRulePrint(const MV_FP_RULE *rule);
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/* Enable NFP */
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void mvFpEnable(void);
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/* Give all packets to Linux IP stack */
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void mvFpDisable(void);
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MV_STATUS mvFpInit(void);
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int mvFpProcess(MV_U32 ifIndex, MV_PKT_INFO* pPkt, MV_FP_STATS* pFpStats);
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void mvFpStatsPrint(MV_FP_STATS *pFpStats);
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/* NAT SUPPORT Functions */
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#ifdef CONFIG_MV_ETH_NFP_NAT_SUPPORT
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/* Find and return the first matching rule */
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static INLINE MV_FP_NAT_RULE* mvFpNatRuleFind(MV_U32 dstIp, MV_U32 srcIp,
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MV_U8 proto, MV_U16 dport, MV_U16 sport)
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{
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MV_U32 hash, hash_tr;
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MV_FP_NAT_RULE* pNatRule;
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hash = mv_jhash_3words(dstIp, srcIp, (MV_U32)((dport << 16) | sport),
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(MV_U32)((fp_ip_jhash_iv << 8) | proto));
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hash_tr = hash & (natRuleDbSize - 1);
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/*
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mvOsPrintf("mvFpNatRuleFind: DIP=0x%08x, SIP=0x%08x, proto=%d, DPort=%d, SPort=%d, hash=0x%08x (0x%x)\n",
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dstIp, srcIp, proto, dport, sport, hash, hash_tr);
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*/
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pNatRule = natRuleDb[hash_tr].natRuleChain;
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while(pNatRule)
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{
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/* look for a matching rule */
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if( (pNatRule->dstIp == dstIp) &&
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(pNatRule->srcIp == srcIp) &&
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(pNatRule->proto == proto) &&
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(pNatRule->dstPort == dport) &&
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(pNatRule->srcPort == sport) )
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{
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pNatRule->new_count++;
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return pNatRule;
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}
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pNatRule = pNatRule->next;
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}
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return NULL;
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}
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/* Initialize NFP NAT Rule Database (SNAT + DNAT table) */
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MV_STATUS mvFpNatDbInit(MV_U32 dbSize);
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/* Clear NFP NAT Rule Database (SNAT + DNAT table) */
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MV_STATUS mvFpNatDbClear(void);
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/* Free NAT Database memory */
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void mvFpNatDbDestroy(void);
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/* Set a NAT rule: create a new rule or update an existing rule in the SNAT + DNAT table */
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MV_STATUS mvFpNatRuleSet(MV_FP_NAT_RULE *natRule);
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MV_STATUS mvFpRuleAwareSet(MV_FP_RULE *pSetRule);
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/* Delete a specified NAT rule from the SNAT + DNAT table */
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MV_STATUS mvFpNatRuleDelete(MV_FP_NAT_RULE *natRule);
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/* Get the count value for a NAT rule */
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MV_U32 mvFpNatCountGet(MV_U32 srcIp, MV_U32 dstIp, MV_U16 srcPort, MV_U16 dstPort, MV_U8 proto);
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/* Print NFP NAT Rule Database (SNAT + DNAT table) */
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MV_STATUS mvFpNatDbPrint(void);
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/* Print a NAT Rule */
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void mvFpNatRulePrint(const MV_FP_NAT_RULE *rule);
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/* Extract dstPort and srcPort values from the packet */
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MV_U8 mvFpNatPortsGet(MV_IP_HEADER* pIpHdr, MV_U16* pDstPort, MV_U16* pSrcPort);
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int mvFpNatPktUpdate(MV_IP_HEADER* pIpHdr, MV_FP_NAT_RULE* pDnatRule, MV_FP_NAT_RULE* pSnatRule);
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#endif /* CONFIG_MV_ETH_NFP_NAT_SUPPORT */
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#ifdef CONFIG_MV_ETH_NFP_FDB_SUPPORT
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/* Init NFP Bridge Rule Database */
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MV_STATUS mvFpFdbInit(MV_U32 dbSize);
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/* Clear NFP Bridge Rule Database */
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MV_STATUS mvFpFdbClear(void);
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/* Destroy NFP Bridge Rule Database */
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void mvFpFdbDestroy(void);
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/* Add NFP Bridge Rule */
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MV_STATUS mvFpFdbRuleSet(MV_FP_FDB_RULE *rule);
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/* Delete NFP Bridge Rule Database */
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MV_STATUS mvFpFdbRuleDel(MV_FP_FDB_RULE *rule);
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/* Aging NFP Bridge Rule Database */
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MV_U32 mvFpFdbRuleAge(MV_FP_FDB_RULE *rule);
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/* Print NFP Bridge Rule Database */
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MV_STATUS mvFpFdbPrint(void);
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#endif /* CONFIG_MV_ETH_NFP_FDB_SUPPORT */
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#ifdef CONFIG_MV_ETH_NFP_PPP
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/* Init NFP PPPoE Rule Database */
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MV_STATUS mvFpPppInit(void);
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/* Clear NFP PPPoE Rule Database */
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MV_STATUS mvFpPppClear(void);
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/* Destroy NFP PPPoE Rule Database */
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void mvFpPppDestroy(void);
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/* Add NFP PPPoE Rule */
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MV_STATUS mvFpPppRuleSet(MV_FP_PPP_RULE *rule);
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/* Delete NFP PPPoE Rule Database */
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MV_STATUS mvFpPppRuleDel(MV_FP_PPP_RULE *rule);
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/* Aging NFP PPPoE Rule Database */
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MV_U32 mvFpPppRuleAge(MV_FP_PPP_RULE *rule);
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/* Print NFP PPPoE Rule Database */
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MV_STATUS mvFpPppPrint(void);
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/* Add PPPoE header */
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int mvFpPPPoE(MV_U32 ifIndex, MV_PKT_INFO* pPkt, MV_FP_STATS* pFpStats);
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/* Get physical interface the PPP runs over */
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MV_U32 mvFpPppPhyIf(MV_U32 ifIndex);
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#endif /* CONFIG_MV_ETH_NFP_PPP */
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#ifdef CONFIG_MV_ETH_NFP_SEC
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MV_VOID mvNfpSecDbPrint(MV_VOID);
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#endif /* CONFIG_MV_ETH_NFP_SEC */
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#endif /* __mvNfp_h__ */
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