8820ce5fe7
- Enable 5-tuple and every-packet lookup. - Setup the default filter mode to allow filtering/steering based on IP protocol, ingress port, inner VLAN ID, IP frag, FCoE, and MPS match type; all combined together. You can also filter based on MAC index, Ethernet type, IP TOS/IPv6 Traffic Class, and outer VLAN ID but you'll have to modify the default filter mode and exclude some of the match-fields in it. IPv4 and IPv6 SIP/DIP/SPORT/DPORT are always available in all filter rules. - Add driver ioctls to get/set the global filter mode. - Add driver ioctls to program and delete hardware filters. A couple of the "switch" actions that rewrite Ethernet and VLAN information and switch the packet out of another port may not work as the L2 code is not yet in place. Everything else, including all "drop" and "pass" rules with RSS or absolute qid, should work. Obtained from: Chelsio Communications
194 lines
6.9 KiB
C
194 lines
6.9 KiB
C
/*-
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* Copyright (c) 2011 Chelsio Communications, Inc.
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* All rights reserved.
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* Written by: Navdeep Parhar <np@FreeBSD.org>
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*
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __T4_IOCTL_H__
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#define __T4_IOCTL_H__
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#include <sys/types.h>
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#include <net/ethernet.h>
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/*
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* Ioctl commands specific to this driver.
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*/
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enum {
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T4_GETREG = 0x40, /* read register */
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T4_SETREG, /* write register */
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T4_REGDUMP, /* dump of all registers */
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T4_GET_FILTER_MODE, /* get global filter mode */
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T4_SET_FILTER_MODE, /* set global filter mode */
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T4_GET_FILTER, /* get information about a filter */
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T4_SET_FILTER, /* program a filter */
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T4_DEL_FILTER, /* delete a filter */
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};
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struct t4_reg {
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uint32_t addr;
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uint32_t size;
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uint64_t val;
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};
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#define T4_REGDUMP_SIZE (160 * 1024)
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struct t4_regdump {
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uint32_t version;
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uint32_t len; /* bytes */
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uint32_t *data;
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};
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/*
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* A hardware filter is some valid combination of these.
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*/
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#define T4_FILTER_IPv4 0x1 /* IPv4 packet */
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#define T4_FILTER_IPv6 0x2 /* IPv6 packet */
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#define T4_FILTER_IP_SADDR 0x4 /* Source IP address or network */
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#define T4_FILTER_IP_DADDR 0x8 /* Destination IP address or network */
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#define T4_FILTER_IP_SPORT 0x10 /* Source IP port */
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#define T4_FILTER_IP_DPORT 0x20 /* Destination IP port */
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#define T4_FILTER_FCoE 0x40 /* Fibre Channel over Ethernet packet */
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#define T4_FILTER_PORT 0x80 /* Physical ingress port */
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#define T4_FILTER_OVLAN 0x100 /* Outer VLAN ID */
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#define T4_FILTER_IVLAN 0x200 /* Inner VLAN ID */
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#define T4_FILTER_IP_TOS 0x400 /* IPv4 TOS/IPv6 Traffic Class */
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#define T4_FILTER_IP_PROTO 0x800 /* IP protocol */
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#define T4_FILTER_ETH_TYPE 0x1000 /* Ethernet Type */
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#define T4_FILTER_MAC_IDX 0x2000 /* MPS MAC address match index */
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#define T4_FILTER_MPS_HIT_TYPE 0x4000 /* MPS match type */
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#define T4_FILTER_IP_FRAGMENT 0x8000 /* IP fragment */
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/* Filter action */
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enum {
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FILTER_PASS = 0, /* default */
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FILTER_DROP,
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FILTER_SWITCH
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};
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/* 802.1q manipulation on FILTER_SWITCH */
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enum {
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VLAN_NOCHANGE = 0, /* default */
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VLAN_REMOVE,
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VLAN_INSERT,
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VLAN_REWRITE
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};
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/* MPS match type */
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enum {
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UCAST_EXACT = 0, /* exact unicast match */
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UCAST_HASH = 1, /* inexact (hashed) unicast match */
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MCAST_EXACT = 2, /* exact multicast match */
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MCAST_HASH = 3, /* inexact (hashed) multicast match */
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PROMISC = 4, /* no match but port is promiscuous */
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HYPPROMISC = 5, /* port is hypervisor-promisuous + not bcast */
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BCAST = 6, /* broadcast packet */
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};
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/* Rx steering */
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enum {
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DST_MODE_QUEUE, /* queue is directly specified by filter */
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DST_MODE_RSS_QUEUE, /* filter specifies RSS entry containing queue */
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DST_MODE_RSS, /* queue selected by default RSS hash lookup */
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DST_MODE_FILT_RSS /* queue selected by hashing in filter-specified
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RSS subtable */
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};
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struct t4_filter_tuple {
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/*
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* These are always available.
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*/
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uint8_t sip[16]; /* source IP address (IPv4 in [3:0]) */
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uint8_t dip[16]; /* destinatin IP address (IPv4 in [3:0]) */
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uint16_t sport; /* source port */
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uint16_t dport; /* destination port */
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/*
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* A combination of these (upto 36 bits) is available. TP_VLAN_PRI_MAP
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* is used to select the global mode and all filters are limited to the
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* set of fields allowed by the global mode.
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*/
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uint16_t ovlan; /* outer VLAN */
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uint16_t ivlan; /* inner VLAN */
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uint16_t ethtype; /* Ethernet type */
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uint8_t tos; /* TOS/Traffic Type */
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uint8_t proto; /* protocol type */
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uint32_t fcoe:1; /* FCoE packet */
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uint32_t iport:3; /* ingress port */
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uint32_t matchtype:3; /* MPS match type */
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uint32_t frag:1; /* fragmentation extension header */
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uint32_t macidx:9; /* exact match MAC index */
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uint32_t ivlan_vld:1; /* inner VLAN valid */
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uint32_t ovlan_vld:1; /* outer VLAN valid */
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};
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struct t4_filter_specification {
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uint32_t hitcnts:1; /* count filter hits in TCB */
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uint32_t prio:1; /* filter has priority over active/server */
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uint32_t type:1; /* 0 => IPv4, 1 => IPv6 */
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uint32_t action:2; /* drop, pass, switch */
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uint32_t rpttid:1; /* report TID in RSS hash field */
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uint32_t dirsteer:1; /* 0 => RSS, 1 => steer to iq */
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uint32_t iq:10; /* ingress queue */
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uint32_t maskhash:1; /* dirsteer=0: store RSS hash in TCB */
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uint32_t dirsteerhash:1;/* dirsteer=1: 0 => TCB contains RSS hash */
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/* 1 => TCB contains IQ ID */
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/*
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* Switch proxy/rewrite fields. An ingress packet which matches a
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* filter with "switch" set will be looped back out as an egress
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* packet -- potentially with some Ethernet header rewriting.
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*/
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uint32_t eport:2; /* egress port to switch packet out */
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uint32_t newdmac:1; /* rewrite destination MAC address */
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uint32_t newsmac:1; /* rewrite source MAC address */
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uint32_t newvlan:2; /* rewrite VLAN Tag */
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uint8_t dmac[ETHER_ADDR_LEN]; /* new destination MAC address */
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uint8_t smac[ETHER_ADDR_LEN]; /* new source MAC address */
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uint16_t vlan; /* VLAN Tag to insert */
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/*
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* Filter rule value/mask pairs.
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*/
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struct t4_filter_tuple val;
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struct t4_filter_tuple mask;
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};
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struct t4_filter {
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uint32_t idx;
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uint64_t hits;
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struct t4_filter_specification fs;
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};
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#define CHELSIO_T4_GETREG _IOWR('f', T4_GETREG, struct t4_reg)
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#define CHELSIO_T4_SETREG _IOW('f', T4_SETREG, struct t4_reg)
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#define CHELSIO_T4_REGDUMP _IOWR('f', T4_REGDUMP, struct t4_regdump)
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#define CHELSIO_T4_GET_FILTER_MODE _IOWR('f', T4_GET_FILTER_MODE, uint32_t)
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#define CHELSIO_T4_SET_FILTER_MODE _IOW('f', T4_SET_FILTER_MODE, uint32_t)
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#define CHELSIO_T4_GET_FILTER _IOWR('f', T4_GET_FILTER, struct t4_filter)
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#define CHELSIO_T4_SET_FILTER _IOW('f', T4_SET_FILTER, struct t4_filter)
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#define CHELSIO_T4_DEL_FILTER _IOW('f', T4_DEL_FILTER, struct t4_filter)
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#endif
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