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Add support for hardware filters to cxgb(4). The T3 chip can inspect

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L2/3/4 headers and can drop or steer packets as instructed.  Filtering
based on src ip, dst ip, src port, dst port, 802.1q, udp/tcp, and mac
addr is possible.  Add support in cxgbtool to program these filters.
Some simple examples:

Drop all tcp/80 traffic coming from the subnet specified.
# cxgbtool cxgb2 filter 0 sip 192.168.1.0/24 dport 80 type tcp action drop

Steer all incoming UDP traffic to qset 0.
# cxgbtool cxgb2 filter 1 type udp queue 0 action pass

Steer all tcp traffic from 192.168.1.1 to qset 1.
# cxgbtool cxgb2 filter 2 sip 192.168.1.1 type tcp queue 1 action pass

Drop fragments.
# cxgbtool cxgb2 filter 3 type frag action drop

List all filters.
# cxgbtool cxgb2 filter list
index         SIP                DIP     sport dport VLAN PRI P/MAC type Q
    0     192.168.1.0/24         0.0.0.0     *    80    0 0/1 */*    tcp -
    1         0.0.0.0/0          0.0.0.0     *     *    0 0/1 */*    udp 0
    2     192.168.1.1/32         0.0.0.0     *     *    0 0/1 */*    tcp 1
    3         0.0.0.0/0          0.0.0.0     *     *    0 0/1 */*   frag -
16367         0.0.0.0/0          0.0.0.0     *     *    0 0/1 */*      * *

MFC after:	2 weeks
This commit is contained in:
Navdeep Parhar 2010-05-05 00:41:40 +00:00
parent 2caefebb07
commit d6da836201
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207643
3 changed files with 482 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
sys/dev/cxgb/cxgb_ioctl.h
View File

@ -59,6 +59,9 @@ enum {
CH_CLEAR_STATS,
CH_GET_UP_LA,
CH_GET_UP_IOQS,
CH_SET_FILTER,
CH_DEL_FILTER,
CH_GET_FILTER,
};
/* statistics categories */
@ -215,6 +218,29 @@ struct ch_up_ioqs {
struct t3_ioq_entry *data;
};
struct ch_filter_tuple {
uint32_t sip;
uint32_t dip;
uint16_t sport;
uint16_t dport;
uint16_t vlan:12;
uint16_t vlan_prio:3;
};
struct ch_filter {
uint32_t filter_id;
struct ch_filter_tuple val;
struct ch_filter_tuple mask;
uint16_t mac_addr_idx;
uint8_t mac_hit:1;
uint8_t proto:2;
uint8_t want_filter_id:1;
uint8_t pass:1;
uint8_t rss:1;
uint8_t qset;
};
#define CHELSIO_SETREG _IOW('f', CH_SETREG, struct ch_reg)
#define CHELSIO_GETREG _IOWR('f', CH_GETREG, struct ch_reg)
#define CHELSIO_GETMTUTAB _IOR('f', CH_GETMTUTAB, struct ch_mtus)
@ -239,4 +265,7 @@ struct ch_up_ioqs {
#define CHELSIO_GET_EEPROM _IOWR('f', CH_GET_EEPROM, struct ch_eeprom)
#define CHELSIO_GET_UP_LA _IOWR('f', CH_GET_UP_LA, struct ch_up_la)
#define CHELSIO_GET_UP_IOQS _IOWR('f', CH_GET_UP_IOQS, struct ch_up_ioqs)
#define CHELSIO_SET_FILTER _IOW('f', CH_SET_FILTER, struct ch_filter)
#define CHELSIO_DEL_FILTER _IOW('f', CH_DEL_FILTER, struct ch_filter)
#define CHELSIO_GET_FILTER _IOWR('f', CH_GET_FILTER, struct ch_filter)
#endif

273
sys/dev/cxgb/cxgb_main.c
View File

@ -99,6 +99,13 @@ static void cxgb_ext_intr_handler(void *, int);
static void cxgb_tick_handler(void *, int);
static void cxgb_tick(void *);
static void setup_rss(adapter_t *sc);
static int alloc_filters(struct adapter *);
static int setup_hw_filters(struct adapter *);
static int set_filter(struct adapter *, int, const struct filter_info *);
static inline void mk_set_tcb_field(struct cpl_set_tcb_field *, unsigned int,
unsigned int, u64, u64);
static inline void set_tcb_field_ulp(struct cpl_set_tcb_field *, unsigned int,
unsigned int, u64, u64);
/* Attachment glue for the PCI controller end of the device. Each port of
* the device is attached separately, as defined later.
@ -1661,6 +1668,13 @@ cxgb_up(struct adapter *sc)
if ((err = update_tpsram(sc)))
goto out;
if (is_offload(sc)) {
sc->params.mc5.nservers = 0;
sc->params.mc5.nroutes = 0;
sc->params.mc5.nfilters = t3_mc5_size(&sc->mc5) -
MC5_MIN_TIDS;
}
err = t3_init_hw(sc, 0);
if (err)
goto out;
@ -1672,6 +1686,7 @@ cxgb_up(struct adapter *sc)
if (err)
goto out;
alloc_filters(sc);
setup_rss(sc);
t3_intr_clear(sc);
@ -1698,6 +1713,7 @@ cxgb_up(struct adapter *sc)
if (!(sc->flags & QUEUES_BOUND)) {
bind_qsets(sc);
setup_hw_filters(sc);
sc->flags |= QUEUES_BOUND;
}
@ -3076,6 +3092,139 @@ cxgb_extension_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data,
free(buf, M_DEVBUF);
break;
}
case CHELSIO_SET_FILTER: {
struct ch_filter *f = (struct ch_filter *)data;;
struct filter_info *p;
unsigned int nfilters = sc->params.mc5.nfilters;
if (!is_offload(sc))
return (EOPNOTSUPP); /* No TCAM */
if (!(sc->flags & FULL_INIT_DONE))
return (EAGAIN); /* mc5 not setup yet */
if (nfilters == 0)
return (EBUSY); /* TOE will use TCAM */
/* sanity checks */
if (f->filter_id >= nfilters ||
(f->val.dip && f->mask.dip != 0xffffffff) ||
(f->val.sport && f->mask.sport != 0xffff) ||
(f->val.dport && f->mask.dport != 0xffff) ||
(f->val.vlan && f->mask.vlan != 0xfff) ||
(f->val.vlan_prio &&
f->mask.vlan_prio != FILTER_NO_VLAN_PRI) ||
(f->mac_addr_idx != 0xffff && f->mac_addr_idx > 15) ||
f->qset >= SGE_QSETS ||
sc->rrss_map[f->qset] >= RSS_TABLE_SIZE)
return (EINVAL);
/* Was allocated with M_WAITOK */
KASSERT(sc->filters, ("filter table NULL\n"));
p = &sc->filters[f->filter_id];
if (p->locked)
return (EPERM);
bzero(p, sizeof(*p));
p->sip = f->val.sip;
p->sip_mask = f->mask.sip;
p->dip = f->val.dip;
p->sport = f->val.sport;
p->dport = f->val.dport;
p->vlan = f->mask.vlan ? f->val.vlan : 0xfff;
p->vlan_prio = f->mask.vlan_prio ? (f->val.vlan_prio & 6) :
FILTER_NO_VLAN_PRI;
p->mac_hit = f->mac_hit;
p->mac_vld = f->mac_addr_idx != 0xffff;
p->mac_idx = f->mac_addr_idx;
p->pkt_type = f->proto;
p->report_filter_id = f->want_filter_id;
p->pass = f->pass;
p->rss = f->rss;
p->qset = f->qset;
error = set_filter(sc, f->filter_id, p);
if (error == 0)
p->valid = 1;
break;
}
case CHELSIO_DEL_FILTER: {
struct ch_filter *f = (struct ch_filter *)data;
struct filter_info *p;
unsigned int nfilters = sc->params.mc5.nfilters;
if (!is_offload(sc))
return (EOPNOTSUPP);
if (!(sc->flags & FULL_INIT_DONE))
return (EAGAIN);
if (nfilters == 0 || sc->filters == NULL)
return (EINVAL);
if (f->filter_id >= nfilters)
return (EINVAL);
p = &sc->filters[f->filter_id];
if (p->locked)
return (EPERM);
if (!p->valid)
return (EFAULT); /* Read "Bad address" as "Bad index" */
bzero(p, sizeof(*p));
p->sip = p->sip_mask = 0xffffffff;
p->vlan = 0xfff;
p->vlan_prio = FILTER_NO_VLAN_PRI;
p->pkt_type = 1;
error = set_filter(sc, f->filter_id, p);
break;
}
case CHELSIO_GET_FILTER: {
struct ch_filter *f = (struct ch_filter *)data;
struct filter_info *p;
unsigned int i, nfilters = sc->params.mc5.nfilters;
if (!is_offload(sc))
return (EOPNOTSUPP);
if (!(sc->flags & FULL_INIT_DONE))
return (EAGAIN);
if (nfilters == 0 || sc->filters == NULL)
return (EINVAL);
i = f->filter_id == 0xffffffff ? 0 : f->filter_id + 1;
for (; i < nfilters; i++) {
p = &sc->filters[i];
if (!p->valid)
continue;
bzero(f, sizeof(*f));
f->filter_id = i;
f->val.sip = p->sip;
f->mask.sip = p->sip_mask;
f->val.dip = p->dip;
f->mask.dip = p->dip ? 0xffffffff : 0;
f->val.sport = p->sport;
f->mask.sport = p->sport ? 0xffff : 0;
f->val.dport = p->dport;
f->mask.dport = p->dport ? 0xffff : 0;
f->val.vlan = p->vlan == 0xfff ? 0 : p->vlan;
f->mask.vlan = p->vlan == 0xfff ? 0 : 0xfff;
f->val.vlan_prio = p->vlan_prio == FILTER_NO_VLAN_PRI ?
0 : p->vlan_prio;
f->mask.vlan_prio = p->vlan_prio == FILTER_NO_VLAN_PRI ?
0 : FILTER_NO_VLAN_PRI;
f->mac_hit = p->mac_hit;
f->mac_addr_idx = p->mac_vld ? p->mac_idx : 0xffff;
f->proto = p->pkt_type;
f->want_filter_id = p->report_filter_id;
f->pass = p->pass;
f->rss = p->rss;
f->qset = p->qset;
break;
}
if (i == nfilters)
f->filter_id = 0xffffffff;
break;
}
default:
return (EOPNOTSUPP);
break;
@ -3130,5 +3279,129 @@ cxgb_get_regs(adapter_t *sc, struct ch_ifconf_regs *regs, uint8_t *buf)
XGM_REG(A_XGM_RX_SPI4_SOP_EOP_CNT, 1));
}
static int
alloc_filters(struct adapter *sc)
{
struct filter_info *p;
unsigned int nfilters = sc->params.mc5.nfilters;
if (nfilters == 0)
return (0);
p = malloc(sizeof(*p) * nfilters, M_DEVBUF, M_WAITOK | M_ZERO);
sc->filters = p;
p = &sc->filters[nfilters - 1];
p->vlan = 0xfff;
p->vlan_prio = FILTER_NO_VLAN_PRI;
p->pass = p->rss = p->valid = p->locked = 1;
return (0);
}
static int
setup_hw_filters(struct adapter *sc)
{
int i, rc;
unsigned int nfilters = sc->params.mc5.nfilters;
if (!sc->filters)
return (0);
t3_enable_filters(sc);
for (i = rc = 0; i < nfilters && !rc; i++) {
if (sc->filters[i].locked)
rc = set_filter(sc, i, &sc->filters[i]);
}
return (rc);
}
static int
set_filter(struct adapter *sc, int id, const struct filter_info *f)
{
int len;
struct mbuf *m;
struct ulp_txpkt *txpkt;
struct work_request_hdr *wr;
struct cpl_pass_open_req *oreq;
struct cpl_set_tcb_field *sreq;
len = sizeof(*wr) + sizeof(*oreq) + 2 * sizeof(*sreq);
KASSERT(len <= MHLEN, ("filter request too big for an mbuf"));
id += t3_mc5_size(&sc->mc5) - sc->params.mc5.nroutes -
sc->params.mc5.nfilters;
m = m_gethdr(M_WAITOK, MT_DATA);
m->m_len = m->m_pkthdr.len = len;
bzero(mtod(m, char *), len);
wr = mtod(m, struct work_request_hdr *);
wr->wrh_hi = htonl(V_WR_OP(FW_WROPCODE_BYPASS) | F_WR_ATOMIC);
oreq = (struct cpl_pass_open_req *)(wr + 1);
txpkt = (struct ulp_txpkt *)oreq;
txpkt->cmd_dest = htonl(V_ULPTX_CMD(ULP_TXPKT));
txpkt->len = htonl(V_ULPTX_NFLITS(sizeof(*oreq) / 8));
OPCODE_TID(oreq) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, id));
oreq->local_port = htons(f->dport);
oreq->peer_port = htons(f->sport);
oreq->local_ip = htonl(f->dip);
oreq->peer_ip = htonl(f->sip);
oreq->peer_netmask = htonl(f->sip_mask);
oreq->opt0h = 0;
oreq->opt0l = htonl(F_NO_OFFLOAD);
oreq->opt1 = htonl(V_MAC_MATCH_VALID(f->mac_vld) |
V_CONN_POLICY(CPL_CONN_POLICY_FILTER) |
V_VLAN_PRI(f->vlan_prio >> 1) |
V_VLAN_PRI_VALID(f->vlan_prio != FILTER_NO_VLAN_PRI) |
V_PKT_TYPE(f->pkt_type) | V_OPT1_VLAN(f->vlan) |
V_MAC_MATCH(f->mac_idx | (f->mac_hit << 4)));
sreq = (struct cpl_set_tcb_field *)(oreq + 1);
set_tcb_field_ulp(sreq, id, 1, 0x1800808000ULL,
(f->report_filter_id << 15) | (1 << 23) |
((u64)f->pass << 35) | ((u64)!f->rss << 36));
set_tcb_field_ulp(sreq + 1, id, 0, 0xffffffff, (2 << 19) | 1);
t3_mgmt_tx(sc, m);
if (f->pass && !f->rss) {
len = sizeof(*sreq);
m = m_gethdr(M_WAITOK, MT_DATA);
m->m_len = m->m_pkthdr.len = len;
bzero(mtod(m, char *), len);
sreq = mtod(m, struct cpl_set_tcb_field *);
sreq->wr.wrh_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
mk_set_tcb_field(sreq, id, 25, 0x3f80000,
(u64)sc->rrss_map[f->qset] << 19);
t3_mgmt_tx(sc, m);
}
return 0;
}
static inline void
mk_set_tcb_field(struct cpl_set_tcb_field *req, unsigned int tid,
unsigned int word, u64 mask, u64 val)
{
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid));
req->reply = V_NO_REPLY(1);
req->cpu_idx = 0;
req->word = htons(word);
req->mask = htobe64(mask);
req->val = htobe64(val);
}
static inline void
set_tcb_field_ulp(struct cpl_set_tcb_field *req, unsigned int tid,
unsigned int word, u64 mask, u64 val)
{
struct ulp_txpkt *txpkt = (struct ulp_txpkt *)req;
txpkt->cmd_dest = htonl(V_ULPTX_CMD(ULP_TXPKT));
txpkt->len = htonl(V_ULPTX_NFLITS(sizeof(*req) / 8));
mk_set_tcb_field(req, tid, word, mask, val);
}
MODULE_DEPEND(if_cxgb, cxgb_t3fw, 1, 1, 1);

186
usr.sbin/cxgbtool/cxgbtool.c
View File

@ -1,6 +1,6 @@
/**************************************************************************
Copyright (c) 2007-2009, Chelsio Inc.
Copyright (c) 2007-2010, Chelsio Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
@ -93,6 +93,9 @@ usage(FILE *fp)
"\tclearstats clear MAC statistics\n"
"\tcontext <type> <id> show an SGE context\n"
"\tdesc <qset> <queue> <idx> [<cnt>] dump SGE descriptors\n"
"\tfilter <idx> [<param> <val>] ... set a filter\n"
"\tfilter <idx> delete|clear delete a filter\n"
"\tfilter list list all filters\n"
"\tioqs dump uP IOQs\n"
"\tla dump uP logic analyzer info\n"
"\tloadboot <boot image> download boot image\n"
@ -1177,24 +1180,25 @@ parse_ipaddr(const char *s, uint32_t *addr, uint32_t *mask)
* Parse a string containing a value and an optional colon separated mask.
*/
static int
parse_val_mask_param(const char *s, uint32_t *val, uint32_t *mask)
parse_val_mask_param(const char *s, uint32_t *val, uint32_t *mask,
uint32_t default_mask)
{
char *p;
*mask = 0xffffffffU;
*mask = default_mask;
*val = strtoul(s, &p, 0);
if (p == s)
if (p == s || *val > default_mask)
return -1;
if (*p == ':' && p[1])
*mask = strtoul(p + 1, &p, 0);
return *p ? -1 : 0;
return *p || *mask > default_mask ? -1 : 0;
}
static int
parse_trace_param(const char *s, uint32_t *val, uint32_t *mask)
{
return strchr(s, '.') ? parse_ipaddr(s, val, mask) :
parse_val_mask_param(s, val, mask);
parse_val_mask_param(s, val, mask, 0xffffffffU);
}
static int
@ -1273,6 +1277,174 @@ trace_config(int argc, char *argv[], int start_arg, const char *iff_name)
return 0;
}
static void
show_filters(const char *iff_name)
{
static const char *pkt_type[] = { "*", "tcp", "udp", "frag" };
struct ch_filter op;
union {
uint32_t nip;
uint8_t octet[4];
} nsip, ndip;
char sip[20], dip[20];
int header = 0;
bzero(&op, sizeof(op));
op.filter_id = 0xffffffff;
do {
if (doit(iff_name, CHELSIO_GET_FILTER, &op) < 0)
err(1, "list filters");
if (op.filter_id == 0xffffffff)
break;
if (!header) {
printf("index SIP DIP sport "
"dport VLAN PRI P/MAC type Q\n");
header = 1;
}
nsip.nip = htonl(op.val.sip);
ndip.nip = htonl(op.val.dip);
sprintf(sip, "%u.%u.%u.%u/%-2u", nsip.octet[0], nsip.octet[1],
nsip.octet[2], nsip.octet[3],
op.mask.sip ? 33 - ffs(op.mask.sip) : 0);
sprintf(dip, "%u.%u.%u.%u", ndip.octet[0], ndip.octet[1],
ndip.octet[2], ndip.octet[3]);
printf("%5zu %18s %15s ", (size_t)op.filter_id, sip, dip);
printf(op.val.sport ? "%5u " : " * ", op.val.sport);
printf(op.val.dport ? "%5u " : " * ", op.val.dport);
printf(op.val.vlan != 0xfff ? "%4u " : " * ", op.val.vlan);
printf(op.val.vlan_prio == 7 ? " * " :
"%1u/%1u ", op.val.vlan_prio, op.val.vlan_prio | 1);
if (op.mac_addr_idx == 0xffff)
printf("*/* ");
else if (op.mac_hit)
printf("%1u/%3u ", (op.mac_addr_idx >> 3) & 0x1,
(op.mac_addr_idx) & 0x7);
else
printf("%1u/ * ", (op.mac_addr_idx >> 3) & 0x1);
printf("%4s ", pkt_type[op.proto]);
if (!op.pass)
printf("-\n");
else if (op.rss)
printf("*\n");
else
printf("%1u\n", op.qset);
} while (1);
}
static int
filter_config(int argc, char *argv[], int start_arg, const char *iff_name)
{
int ret = 0;
uint32_t val, mask;
struct ch_filter op;
if (argc < start_arg + 1)
return -1;
memset(&op, 0, sizeof(op));
op.mac_addr_idx = 0xffff;
op.rss = 1;
if (argc == start_arg + 1 && !strcmp(argv[start_arg], "list")) {
show_filters(iff_name);
return 0;
}
if (get_int_arg(argv[start_arg++], &op.filter_id))
return -1;
if (argc == start_arg + 1 && (!strcmp(argv[start_arg], "delete") ||
!strcmp(argv[start_arg], "clear"))) {
if (doit(iff_name, CHELSIO_DEL_FILTER, &op) < 0) {
if (errno == EBUSY)
err(1, "no filter support when offload in use");
err(1, "delete filter");
}
return 0;
}
while (start_arg + 2 <= argc) {
if (!strcmp(argv[start_arg], "sip")) {
ret = parse_ipaddr(argv[start_arg + 1], &op.val.sip,
&op.mask.sip);
} else if (!strcmp(argv[start_arg], "dip")) {
ret = parse_ipaddr(argv[start_arg + 1], &op.val.dip,
&op.mask.dip);
} else if (!strcmp(argv[start_arg], "sport")) {
ret = parse_val_mask_param(argv[start_arg + 1],
&val, &mask, 0xffff);
op.val.sport = val;
op.mask.sport = mask;
} else if (!strcmp(argv[start_arg], "dport")) {
ret = parse_val_mask_param(argv[start_arg + 1],
&val, &mask, 0xffff);
op.val.dport = val;
op.mask.dport = mask;
} else if (!strcmp(argv[start_arg], "vlan")) {
ret = parse_val_mask_param(argv[start_arg + 1],
&val, &mask, 0xfff);
op.val.vlan = val;
op.mask.vlan = mask;
} else if (!strcmp(argv[start_arg], "prio")) {
ret = parse_val_mask_param(argv[start_arg + 1],
&val, &mask, 7);
op.val.vlan_prio = val;
op.mask.vlan_prio = mask;
} else if (!strcmp(argv[start_arg], "mac")) {
if (!strcmp(argv[start_arg + 1], "none"))
val = -1;
else
ret = get_int_arg(argv[start_arg + 1], &val);
op.mac_hit = val != (uint32_t)-1;
op.mac_addr_idx = op.mac_hit ? val : 0;
} else if (!strcmp(argv[start_arg], "type")) {
if (!strcmp(argv[start_arg + 1], "tcp"))
op.proto = 1;
else if (!strcmp(argv[start_arg + 1], "udp"))
op.proto = 2;
else if (!strcmp(argv[start_arg + 1], "frag"))
op.proto = 3;
else
errx(1, "unknown type \"%s\"; must be one of "
"\"tcp\", \"udp\", or \"frag\"",
argv[start_arg + 1]);
} else if (!strcmp(argv[start_arg], "queue")) {
ret = get_int_arg(argv[start_arg + 1], &val);
op.qset = val;
op.rss = 0;
} else if (!strcmp(argv[start_arg], "action")) {
if (!strcmp(argv[start_arg + 1], "pass"))
op.pass = 1;
else if (strcmp(argv[start_arg + 1], "drop"))
errx(1, "unknown action \"%s\"; must be one of "
"\"pass\" or \"drop\"",
argv[start_arg + 1]);
} else
errx(1, "unknown filter parameter \"%s\"\n"
"known parameters are \"mac\", \"sip\", "
"\"dip\", \"sport\", \"dport\", \"vlan\", "
"\"prio\", \"type\", \"queue\", and \"action\"",
argv[start_arg]);
if (ret < 0)
errx(1, "bad value \"%s\" for parameter \"%s\"",
argv[start_arg + 1], argv[start_arg]);
start_arg += 2;
}
if (start_arg != argc)
errx(1, "no value for \"%s\"", argv[start_arg]);
if (doit(iff_name, CHELSIO_SET_FILTER, &op) < 0) {
if (errno == EBUSY)
err(1, "no filter support when offload in use");
err(1, "set filter");
}
return 0;
}
static int
get_sched_param(int argc, char *argv[], int pos, unsigned int *valp)
{
@ -1501,6 +1673,8 @@ run_cmd(int argc, char *argv[], const char *iff_name)
r = pktsched(argc, argv, 3, iff_name);
else if (!strcmp(argv[2], "tcb"))
r = get_tcb2(argc, argv, 3, iff_name);
else if (!strcmp(argv[2], "filter"))
r = filter_config(argc, argv, 3, iff_name);
else if (!strcmp(argv[2], "clearstats"))
r = clear_stats(argc, argv, 3, iff_name);
else if (!strcmp(argv[2], "la"))