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linux / linux / kernel / git / bpf / bpf / 46ea929b2b3f66e6a9bc91adbb9ca2157065f9b2 / . / drivers / net / ethernet / chelsio / cxgb4 / cxgb4_filter.c
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/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
* Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <net/ipv6.h>
#include "cxgb4.h"
#include "t4_regs.h"
#include "t4_tcb.h"
#include "t4_values.h"
#include "clip_tbl.h"
#include "l2t.h"
#include "smt.h"
#include "t4fw_api.h"
#include "cxgb4_filter.h"
static inline bool is_field_set(u32 val, u32 mask)
{
return val || mask;
}
static inline bool unsupported(u32 conf, u32 conf_mask, u32 val, u32 mask)
{
return !(conf & conf_mask) && is_field_set(val, mask);
}
static int set_tcb_field(struct adapter *adap, struct filter_entry *f,
unsigned int ftid, u16 word, u64 mask, u64 val,
int no_reply)
{
struct cpl_set_tcb_field *req;
struct sk_buff *skb;
skb = alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_ATOMIC);
if (!skb)
return -ENOMEM;
req = (struct cpl_set_tcb_field *)__skb_put_zero(skb, sizeof(*req));
INIT_TP_WR_CPL(req, CPL_SET_TCB_FIELD, ftid);
req->reply_ctrl = htons(REPLY_CHAN_V(0) |
QUEUENO_V(adap->sge.fw_evtq.abs_id) |
NO_REPLY_V(no_reply));
req->word_cookie = htons(TCB_WORD_V(word) | TCB_COOKIE_V(ftid));
req->mask = cpu_to_be64(mask);
req->val = cpu_to_be64(val);
set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3);
t4_ofld_send(adap, skb);
return 0;
}
/* Set one of the t_flags bits in the TCB.
*/
static int set_tcb_tflag(struct adapter *adap, struct filter_entry *f,
unsigned int ftid, unsigned int bit_pos,
unsigned int val, int no_reply)
{
return set_tcb_field(adap, f, ftid, TCB_T_FLAGS_W, 1ULL << bit_pos,
(unsigned long long)val << bit_pos, no_reply);
}
static void mk_abort_req_ulp(struct cpl_abort_req *abort_req, unsigned int tid)
{
struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_req;
struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1);
txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0));
txpkt->len = htonl(DIV_ROUND_UP(sizeof(*abort_req), 16));
sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM));
sc->len = htonl(sizeof(*abort_req) - sizeof(struct work_request_hdr));
OPCODE_TID(abort_req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, tid));
abort_req->rsvd0 = htonl(0);
abort_req->rsvd1 = 0;
abort_req->cmd = CPL_ABORT_NO_RST;
}
static void mk_abort_rpl_ulp(struct cpl_abort_rpl *abort_rpl, unsigned int tid)
{
struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_rpl;
struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1);
txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0));
txpkt->len = htonl(DIV_ROUND_UP(sizeof(*abort_rpl), 16));
sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM));
sc->len = htonl(sizeof(*abort_rpl) - sizeof(struct work_request_hdr));
OPCODE_TID(abort_rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
abort_rpl->rsvd0 = htonl(0);
abort_rpl->rsvd1 = 0;
abort_rpl->cmd = CPL_ABORT_NO_RST;
}
static void mk_set_tcb_ulp(struct filter_entry *f,
struct cpl_set_tcb_field *req,
unsigned int word, u64 mask, u64 val,
u8 cookie, int no_reply)
{
struct ulp_txpkt *txpkt = (struct ulp_txpkt *)req;
struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1);
txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0));
txpkt->len = htonl(DIV_ROUND_UP(sizeof(*req), 16));
sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM));
sc->len = htonl(sizeof(*req) - sizeof(struct work_request_hdr));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, f->tid));
req->reply_ctrl = htons(NO_REPLY_V(no_reply) | REPLY_CHAN_V(0) |
QUEUENO_V(0));
req->word_cookie = htons(TCB_WORD_V(word) | TCB_COOKIE_V(cookie));
req->mask = cpu_to_be64(mask);
req->val = cpu_to_be64(val);
sc = (struct ulptx_idata *)(req + 1);
sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP));
sc->len = htonl(0);
}
static int configure_filter_smac(struct adapter *adap, struct filter_entry *f)
{
int err;
/* do a set-tcb for smac-sel and CWR bit.. */
err = set_tcb_tflag(adap, f, f->tid, TF_CCTRL_CWR_S, 1, 1);
if (err)
goto smac_err;
err = set_tcb_field(adap, f, f->tid, TCB_SMAC_SEL_W,
TCB_SMAC_SEL_V(TCB_SMAC_SEL_M),
TCB_SMAC_SEL_V(f->smt->idx), 1);
if (!err)
return 0;
smac_err:
dev_err(adap->pdev_dev, "filter %u smac config failed with error %u\n",
f->tid, err);
return err;
}
static void set_nat_params(struct adapter *adap, struct filter_entry *f,
unsigned int tid, bool dip, bool sip, bool dp,
bool sp)
{
if (dip) {
if (f->fs.type) {
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W,
WORD_MASK, f->fs.nat_lip[15] |
f->fs.nat_lip[14] << 8 |
f->fs.nat_lip[13] << 16 |
f->fs.nat_lip[12] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 1,
WORD_MASK, f->fs.nat_lip[11] |
f->fs.nat_lip[10] << 8 |
f->fs.nat_lip[9] << 16 |
f->fs.nat_lip[8] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 2,
WORD_MASK, f->fs.nat_lip[7] |
f->fs.nat_lip[6] << 8 |
f->fs.nat_lip[5] << 16 |
f->fs.nat_lip[4] << 24, 1);
set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 3,
WORD_MASK, f->fs.nat_lip[3] |
f->fs.nat_lip[2] << 8 |
f->fs.nat_lip[1] << 16 |
f->fs.nat_lip[0] << 24, 1);
} else {
set_tcb_field(adap, f, tid, TCB_RX_FRAG3_LEN_RAW_W,
WORD_MASK, f->fs.nat_lip[3] |
f->fs.nat_lip[2] << 8 |
f->fs.nat_lip[1] << 16 |
f->fs.nat_lip[0] << 24, 1);
}
}
if (sip) {
if (f->fs.type) {
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W,
WORD_MASK, f->fs.nat_fip[15] |
f->fs.nat_fip[14] << 8 |
f->fs.nat_fip[13] << 16 |
f->fs.nat_fip[12] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 1,
WORD_MASK, f->fs.nat_fip[11] |
f->fs.nat_fip[10] << 8 |
f->fs.nat_fip[9] << 16 |
f->fs.nat_fip[8] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 2,
WORD_MASK, f->fs.nat_fip[7] |
f->fs.nat_fip[6] << 8 |
f->fs.nat_fip[5] << 16 |
f->fs.nat_fip[4] << 24, 1);
set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 3,
WORD_MASK, f->fs.nat_fip[3] |
f->fs.nat_fip[2] << 8 |
f->fs.nat_fip[1] << 16 |
f->fs.nat_fip[0] << 24, 1);
} else {
set_tcb_field(adap, f, tid,
TCB_RX_FRAG3_START_IDX_OFFSET_RAW_W,
WORD_MASK, f->fs.nat_fip[3] |
f->fs.nat_fip[2] << 8 |
f->fs.nat_fip[1] << 16 |
f->fs.nat_fip[0] << 24, 1);
}
}
set_tcb_field(adap, f, tid, TCB_PDU_HDR_LEN_W, WORD_MASK,
(dp ? f->fs.nat_lport : 0) |
(sp ? f->fs.nat_fport << 16 : 0), 1);
}
/* Validate filter spec against configuration done on the card. */
static int validate_filter(struct net_device *dev,
struct ch_filter_specification *fs)
{
struct adapter *adapter = netdev2adap(dev);
u32 fconf, iconf;
/* Check for unconfigured fields being used. */
iconf = adapter->params.tp.ingress_config;
fconf = fs->hash ? adapter->params.tp.filter_mask :
adapter->params.tp.vlan_pri_map;
if (unsupported(fconf, FCOE_F, fs->val.fcoe, fs->mask.fcoe) ||
unsupported(fconf, PORT_F, fs->val.iport, fs->mask.iport) ||
unsupported(fconf, TOS_F, fs->val.tos, fs->mask.tos) ||
unsupported(fconf, ETHERTYPE_F, fs->val.ethtype,
fs->mask.ethtype) ||
unsupported(fconf, MACMATCH_F, fs->val.macidx, fs->mask.macidx) ||
unsupported(fconf, MPSHITTYPE_F, fs->val.matchtype,
fs->mask.matchtype) ||
unsupported(fconf, FRAGMENTATION_F, fs->val.frag, fs->mask.frag) ||
unsupported(fconf, PROTOCOL_F, fs->val.proto, fs->mask.proto) ||
unsupported(fconf, VNIC_ID_F, fs->val.pfvf_vld,
fs->mask.pfvf_vld) ||
unsupported(fconf, VNIC_ID_F, fs->val.ovlan_vld,
fs->mask.ovlan_vld) ||
unsupported(fconf, VNIC_ID_F, fs->val.encap_vld,
fs->mask.encap_vld) ||
unsupported(fconf, VLAN_F, fs->val.ivlan_vld, fs->mask.ivlan_vld))
return -EOPNOTSUPP;
/* T4 inconveniently uses the same FT_VNIC_ID_W bits for both the Outer
* VLAN Tag and PF/VF/VFvld fields based on VNIC_F being set
* in TP_INGRESS_CONFIG. Hense the somewhat crazy checks
* below. Additionally, since the T4 firmware interface also
* carries that overlap, we need to translate any PF/VF
* specification into that internal format below.
*/
if ((is_field_set(fs->val.pfvf_vld, fs->mask.pfvf_vld) &&
is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld)) ||
(is_field_set(fs->val.pfvf_vld, fs->mask.pfvf_vld) &&
is_field_set(fs->val.encap_vld, fs->mask.encap_vld)) ||
(is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld) &&
is_field_set(fs->val.encap_vld, fs->mask.encap_vld)))
return -EOPNOTSUPP;
if (unsupported(iconf, VNIC_F, fs->val.pfvf_vld, fs->mask.pfvf_vld) ||
(is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld) &&
(iconf & VNIC_F)))
return -EOPNOTSUPP;
if (fs->val.pf > 0x7 || fs->val.vf > 0x7f)
return -ERANGE;
fs->mask.pf &= 0x7;
fs->mask.vf &= 0x7f;
/* If the user is requesting that the filter action loop
* matching packets back out one of our ports, make sure that
* the egress port is in range.
*/
if (fs->action == FILTER_SWITCH &&
fs->eport >= adapter->params.nports)
return -ERANGE;
/* Don't allow various trivially obvious bogus out-of-range values... */
if (fs->val.iport >= adapter->params.nports)
return -ERANGE;
/* T4 doesn't support removing VLAN Tags for loop back filters. */
if (is_t4(adapter->params.chip) &&
fs->action == FILTER_SWITCH &&
(fs->newvlan == VLAN_REMOVE ||
fs->newvlan == VLAN_REWRITE))
return -EOPNOTSUPP;
if (fs->val.encap_vld &&
CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6)
return -EOPNOTSUPP;
return 0;
}
static int get_filter_steerq(struct net_device *dev,
struct ch_filter_specification *fs)
{
struct adapter *adapter = netdev2adap(dev);
int iq;
/* If the user has requested steering matching Ingress Packets
* to a specific Queue Set, we need to make sure it's in range
* for the port and map that into the Absolute Queue ID of the
* Queue Set's Response Queue.
*/
if (!fs->dirsteer) {
if (fs->iq)
return -EINVAL;
iq = 0;
} else {
struct port_info *pi = netdev_priv(dev);
/* If the iq id is greater than the number of qsets,
* then assume it is an absolute qid.
*/
if (fs->iq < pi->nqsets)
iq = adapter->sge.ethrxq[pi->first_qset +
fs->iq].rspq.abs_id;
else
iq = fs->iq;
}
return iq;
}
static int get_filter_count(struct adapter *adapter, unsigned int fidx,
u64 *pkts, u64 *bytes, bool hash)
{
unsigned int tcb_base, tcbaddr;
unsigned int word_offset;
struct filter_entry *f;
__be64 be64_byte_count;
int ret;
tcb_base = t4_read_reg(adapter, TP_CMM_TCB_BASE_A);
if (is_hashfilter(adapter) && hash) {
if (tid_out_of_range(&adapter->tids, fidx))
return -E2BIG;
f = adapter->tids.tid_tab[fidx - adapter->tids.tid_base];
if (!f)
return -EINVAL;
} else {
if ((fidx != (adapter->tids.nftids + adapter->tids.nsftids +
adapter->tids.nhpftids - 1)) &&
fidx >= (adapter->tids.nftids + adapter->tids.nhpftids))
return -E2BIG;
if (fidx < adapter->tids.nhpftids)
f = &adapter->tids.hpftid_tab[fidx];
else
f = &adapter->tids.ftid_tab[fidx -
adapter->tids.nhpftids];
if (!f->valid)
return -EINVAL;
}
tcbaddr = tcb_base + f->tid * TCB_SIZE;
spin_lock(&adapter->win0_lock);
if (is_t4(adapter->params.chip)) {
__be64 be64_count;
/* T4 doesn't maintain byte counts in hw */
*bytes = 0;
/* Get pkts */
word_offset = 4;
ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
tcbaddr + (word_offset * sizeof(__be32)),
sizeof(be64_count),
(__be32 *)&be64_count,
T4_MEMORY_READ);
if (ret < 0)
goto out;
*pkts = be64_to_cpu(be64_count);
} else {
__be32 be32_count;
/* Get bytes */
word_offset = 4;
ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
tcbaddr + (word_offset * sizeof(__be32)),
sizeof(be64_byte_count),
&be64_byte_count,
T4_MEMORY_READ);
if (ret < 0)
goto out;
*bytes = be64_to_cpu(be64_byte_count);
/* Get pkts */
word_offset = 6;
ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0,
tcbaddr + (word_offset * sizeof(__be32)),
sizeof(be32_count),
&be32_count,
T4_MEMORY_READ);
if (ret < 0)
goto out;
*pkts = (u64)be32_to_cpu(be32_count);
}
out:
spin_unlock(&adapter->win0_lock);
return ret;
}
int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx,
u64 *hitcnt, u64 *bytecnt, bool hash)
{
struct adapter *adapter = netdev2adap(dev);
return get_filter_count(adapter, fidx, hitcnt, bytecnt, hash);
}
int cxgb4_get_free_ftid(struct net_device *dev, int family)
{
struct adapter *adap = netdev2adap(dev);
struct tid_info *t = &adap->tids;
bool found = false;
u8 i, n, cnt;
int ftid;
/* IPv4 occupy 1 slot. IPv6 occupy 2 slots on T6 and 4 slots
* on T5.
*/
n = 1;
if (family == PF_INET6) {
n++;
if (CHELSIO_CHIP_VERSION(adap->params.chip) < CHELSIO_T6)
n += 2;
}
if (n > t->nftids)
return -ENOMEM;
/* Find free filter slots from the end of TCAM. Appropriate
* checks must be done by caller later to ensure the prio
* passed by TC doesn't conflict with prio saved by existing
* rules in the TCAM.
*/
spin_lock_bh(&t->ftid_lock);
ftid = t->nftids - 1;
while (ftid >= n - 1) {
cnt = 0;
for (i = 0; i < n; i++) {
if (test_bit(ftid - i, t->ftid_bmap))
break;
cnt++;
}
if (cnt == n) {
ftid &= ~(n - 1);
found = true;
break;
}
ftid -= n;
}
spin_unlock_bh(&t->ftid_lock);
ftid += t->nhpftids;
return found ? ftid : -ENOMEM;
}
static int cxgb4_set_ftid(struct tid_info *t, int fidx, int family,
unsigned int chip_ver)
{
spin_lock_bh(&t->ftid_lock);
if (test_bit(fidx, t->ftid_bmap)) {
spin_unlock_bh(&t->ftid_lock);
return -EBUSY;
}
if (family == PF_INET) {
__set_bit(fidx, t->ftid_bmap);
} else {
if (chip_ver < CHELSIO_T6)
bitmap_allocate_region(t->ftid_bmap, fidx, 2);
else
bitmap_allocate_region(t->ftid_bmap, fidx, 1);
}
spin_unlock_bh(&t->ftid_lock);
return 0;
}
static int cxgb4_set_hpftid(struct tid_info *t, int fidx, int family)
{
spin_lock_bh(&t->ftid_lock);
if (test_bit(fidx, t->hpftid_bmap)) {
spin_unlock_bh(&t->ftid_lock);
return -EBUSY;
}
if (family == PF_INET)
__set_bit(fidx, t->hpftid_bmap);
else
bitmap_allocate_region(t->hpftid_bmap, fidx, 1);
spin_unlock_bh(&t->ftid_lock);
return 0;
}
static void cxgb4_clear_ftid(struct tid_info *t, int fidx, int family,
unsigned int chip_ver)
{
spin_lock_bh(&t->ftid_lock);
if (family == PF_INET) {
__clear_bit(fidx, t->ftid_bmap);
} else {
if (chip_ver < CHELSIO_T6)
bitmap_release_region(t->ftid_bmap, fidx, 2);
else
bitmap_release_region(t->ftid_bmap, fidx, 1);
}
spin_unlock_bh(&t->ftid_lock);
}
static void cxgb4_clear_hpftid(struct tid_info *t, int fidx, int family)
{
spin_lock_bh(&t->ftid_lock);
if (family == PF_INET)
__clear_bit(fidx, t->hpftid_bmap);
else
bitmap_release_region(t->hpftid_bmap, fidx, 1);
spin_unlock_bh(&t->ftid_lock);
}
bool cxgb4_filter_prio_in_range(struct net_device *dev, u32 idx, u32 prio)
{
struct filter_entry *prev_fe, *next_fe, *tab;
struct adapter *adap = netdev2adap(dev);
u32 prev_ftid, next_ftid, max_tid;
struct tid_info *t = &adap->tids;
unsigned long *bmap;
bool valid = true;
if (idx < t->nhpftids) {
bmap = t->hpftid_bmap;
tab = t->hpftid_tab;
max_tid = t->nhpftids;
} else {
idx -= t->nhpftids;
bmap = t->ftid_bmap;
tab = t->ftid_tab;
max_tid = t->nftids;
}
/* Only insert the rule if both of the following conditions
* are met:
* 1. The immediate previous rule has priority <= @prio.
* 2. The immediate next rule has priority >= @prio.
*/
spin_lock_bh(&t->ftid_lock);
/* Don't insert if there's a rule already present at @idx. */
if (test_bit(idx, bmap)) {
valid = false;
goto out_unlock;
}
next_ftid = find_next_bit(bmap, max_tid, idx);
if (next_ftid >= max_tid)
next_ftid = idx;
next_fe = &tab[next_ftid];
prev_ftid = find_last_bit(bmap, idx);
if (prev_ftid >= idx)
prev_ftid = idx;
/* See if the filter entry belongs to an IPv6 rule, which
* occupy 4 slots on T5 and 2 slots on T6. Adjust the
* reference to the previously inserted filter entry
* accordingly.
*/
if (CHELSIO_CHIP_VERSION(adap->params.chip) < CHELSIO_T6) {
prev_fe = &tab[prev_ftid & ~0x3];
if (!prev_fe->fs.type)
prev_fe = &tab[prev_ftid];
} else {
prev_fe = &tab[prev_ftid & ~0x1];
if (!prev_fe->fs.type)
prev_fe = &tab[prev_ftid];
}
if ((prev_fe->valid && prio < prev_fe->fs.tc_prio) ||
(next_fe->valid && prio > next_fe->fs.tc_prio))
valid = false;
out_unlock:
spin_unlock_bh(&t->ftid_lock);
return valid;
}
/* Delete the filter at a specified index. */
static int del_filter_wr(struct adapter *adapter, int fidx)
{
struct fw_filter_wr *fwr;
struct filter_entry *f;
struct sk_buff *skb;
unsigned int len;
if (fidx < adapter->tids.nhpftids)
f = &adapter->tids.hpftid_tab[fidx];
else
f = &adapter->tids.ftid_tab[fidx - adapter->tids.nhpftids];
len = sizeof(*fwr);
skb = alloc_skb(len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
fwr = __skb_put(skb, len);
t4_mk_filtdelwr(f->tid, fwr, adapter->sge.fw_evtq.abs_id);
/* Mark the filter as "pending" and ship off the Filter Work Request.
* When we get the Work Request Reply we'll clear the pending status.
*/
f->pending = 1;
t4_mgmt_tx(adapter, skb);
return 0;
}
/* Send a Work Request to write the filter at a specified index. We construct
* a Firmware Filter Work Request to have the work done and put the indicated
* filter into "pending" mode which will prevent any further actions against
* it till we get a reply from the firmware on the completion status of the
* request.
*/
int set_filter_wr(struct adapter *adapter, int fidx)
{
struct fw_filter2_wr *fwr;
struct filter_entry *f;
struct sk_buff *skb;
if (fidx < adapter->tids.nhpftids)
f = &adapter->tids.hpftid_tab[fidx];
else
f = &adapter->tids.ftid_tab[fidx - adapter->tids.nhpftids];
skb = alloc_skb(sizeof(*fwr), GFP_KERNEL);
if (!skb)
return -ENOMEM;
/* If the new filter requires loopback Destination MAC and/or VLAN
* rewriting then we need to allocate a Layer 2 Table (L2T) entry for
* the filter.
*/
if (f->fs.newdmac || f->fs.newvlan) {
/* allocate L2T entry for new filter */
f->l2t = t4_l2t_alloc_switching(adapter, f->fs.vlan,
f->fs.eport, f->fs.dmac);
if (!f->l2t) {
kfree_skb(skb);
return -ENOMEM;
}
}
/* If the new filter requires loopback Source MAC rewriting then
* we need to allocate a SMT entry for the filter.
*/
if (f->fs.newsmac) {
f->smt = cxgb4_smt_alloc_switching(f->dev, f->fs.smac);
if (!f->smt) {
if (f->l2t) {
cxgb4_l2t_release(f->l2t);
f->l2t = NULL;
}
kfree_skb(skb);
return -ENOMEM;
}
}
fwr = __skb_put_zero(skb, sizeof(*fwr));
/* It would be nice to put most of the following in t4_hw.c but most
* of the work is translating the cxgbtool ch_filter_specification
* into the Work Request and the definition of that structure is
* currently in cxgbtool.h which isn't appropriate to pull into the
* common code. We may eventually try to come up with a more neutral
* filter specification structure but for now it's easiest to simply
* put this fairly direct code in line ...
*/
if (adapter->params.filter2_wr_support)
fwr->op_pkd = htonl(FW_WR_OP_V(FW_FILTER2_WR));
else
fwr->op_pkd = htonl(FW_WR_OP_V(FW_FILTER_WR));
fwr->len16_pkd = htonl(FW_WR_LEN16_V(sizeof(*fwr) / 16));
fwr->tid_to_iq =
htonl(FW_FILTER_WR_TID_V(f->tid) |
FW_FILTER_WR_RQTYPE_V(f->fs.type) |
FW_FILTER_WR_NOREPLY_V(0) |
FW_FILTER_WR_IQ_V(f->fs.iq));
fwr->del_filter_to_l2tix =
htonl(FW_FILTER_WR_RPTTID_V(f->fs.rpttid) |
FW_FILTER_WR_DROP_V(f->fs.action == FILTER_DROP) |
FW_FILTER_WR_DIRSTEER_V(f->fs.dirsteer) |
FW_FILTER_WR_MASKHASH_V(f->fs.maskhash) |
FW_FILTER_WR_DIRSTEERHASH_V(f->fs.dirsteerhash) |
FW_FILTER_WR_LPBK_V(f->fs.action == FILTER_SWITCH) |
FW_FILTER_WR_DMAC_V(f->fs.newdmac) |
FW_FILTER_WR_INSVLAN_V(f->fs.newvlan == VLAN_INSERT ||
f->fs.newvlan == VLAN_REWRITE) |
FW_FILTER_WR_RMVLAN_V(f->fs.newvlan == VLAN_REMOVE ||
f->fs.newvlan == VLAN_REWRITE) |
FW_FILTER_WR_HITCNTS_V(f->fs.hitcnts) |
FW_FILTER_WR_TXCHAN_V(f->fs.eport) |
FW_FILTER_WR_PRIO_V(f->fs.prio) |
FW_FILTER_WR_L2TIX_V(f->l2t ? f->l2t->idx : 0));
fwr->ethtype = htons(f->fs.val.ethtype);
fwr->ethtypem = htons(f->fs.mask.ethtype);
fwr->frag_to_ovlan_vldm =
(FW_FILTER_WR_FRAG_V(f->fs.val.frag) |
FW_FILTER_WR_FRAGM_V(f->fs.mask.frag) |
FW_FILTER_WR_IVLAN_VLD_V(f->fs.val.ivlan_vld) |
FW_FILTER_WR_OVLAN_VLD_V(f->fs.val.ovlan_vld) |
FW_FILTER_WR_IVLAN_VLDM_V(f->fs.mask.ivlan_vld) |
FW_FILTER_WR_OVLAN_VLDM_V(f->fs.mask.ovlan_vld));
fwr->smac_sel = 0;
fwr->rx_chan_rx_rpl_iq =
htons(FW_FILTER_WR_RX_CHAN_V(0) |
FW_FILTER_WR_RX_RPL_IQ_V(adapter->sge.fw_evtq.abs_id));
fwr->maci_to_matchtypem =
htonl(FW_FILTER_WR_MACI_V(f->fs.val.macidx) |
FW_FILTER_WR_MACIM_V(f->fs.mask.macidx) |
FW_FILTER_WR_FCOE_V(f->fs.val.fcoe) |
FW_FILTER_WR_FCOEM_V(f->fs.mask.fcoe) |
FW_FILTER_WR_PORT_V(f->fs.val.iport) |
FW_FILTER_WR_PORTM_V(f->fs.mask.iport) |
FW_FILTER_WR_MATCHTYPE_V(f->fs.val.matchtype) |
FW_FILTER_WR_MATCHTYPEM_V(f->fs.mask.matchtype));
fwr->ptcl = f->fs.val.proto;
fwr->ptclm = f->fs.mask.proto;
fwr->ttyp = f->fs.val.tos;
fwr->ttypm = f->fs.mask.tos;
fwr->ivlan = htons(f->fs.val.ivlan);
fwr->ivlanm = htons(f->fs.mask.ivlan);
fwr->ovlan = htons(f->fs.val.ovlan);
fwr->ovlanm = htons(f->fs.mask.ovlan);
memcpy(fwr->lip, f->fs.val.lip, sizeof(fwr->lip));
memcpy(fwr->lipm, f->fs.mask.lip, sizeof(fwr->lipm));
memcpy(fwr->fip, f->fs.val.fip, sizeof(fwr->fip));
memcpy(fwr->fipm, f->fs.mask.fip, sizeof(fwr->fipm));
fwr->lp = htons(f->fs.val.lport);
fwr->lpm = htons(f->fs.mask.lport);
fwr->fp = htons(f->fs.val.fport);
fwr->fpm = htons(f->fs.mask.fport);
if (adapter->params.filter2_wr_support) {
fwr->natmode_to_ulp_type =
FW_FILTER2_WR_ULP_TYPE_V(f->fs.nat_mode ?
ULP_MODE_TCPDDP :
ULP_MODE_NONE) |
FW_FILTER2_WR_NATMODE_V(f->fs.nat_mode);
memcpy(fwr->newlip, f->fs.nat_lip, sizeof(fwr->newlip));
memcpy(fwr->newfip, f->fs.nat_fip, sizeof(fwr->newfip));
fwr->newlport = htons(f->fs.nat_lport);
fwr->newfport = htons(f->fs.nat_fport);
}
/* Mark the filter as "pending" and ship off the Filter Work Request.
* When we get the Work Request Reply we'll clear the pending status.
*/
f->pending = 1;
set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3);
t4_ofld_send(adapter, skb);
return 0;
}
/* Return an error number if the indicated filter isn't writable ... */
int writable_filter(struct filter_entry *f)
{
if (f->locked)
return -EPERM;
if (f->pending)
return -EBUSY;
return 0;
}
/* Delete the filter at the specified index (if valid). The checks for all
* the common problems with doing this like the filter being locked, currently
* pending in another operation, etc.
*/
int delete_filter(struct adapter *adapter, unsigned int fidx)
{
struct filter_entry *f;
int ret;
if (fidx >= adapter->tids.nftids + adapter->tids.nsftids +
adapter->tids.nhpftids)
return -EINVAL;
if (fidx < adapter->tids.nhpftids)
f = &adapter->tids.hpftid_tab[fidx];
else
f = &adapter->tids.ftid_tab[fidx - adapter->tids.nhpftids];
ret = writable_filter(f);
if (ret)
return ret;
if (f->valid)
return del_filter_wr(adapter, fidx);
return 0;
}
/* Clear a filter and release any of its resources that we own. This also
* clears the filter's "pending" status.
*/
void clear_filter(struct adapter *adap, struct filter_entry *f)
{
struct port_info *pi = netdev_priv(f->dev);
/* If the new or old filter have loopback rewriteing rules then we'll
* need to free any existing L2T, SMT, CLIP entries of filter
* rule.
*/
if (f->l2t)
cxgb4_l2t_release(f->l2t);
if (f->smt)
cxgb4_smt_release(f->smt);
if (f->fs.val.encap_vld && f->fs.val.ovlan_vld)
t4_free_encap_mac_filt(adap, pi->viid,
f->fs.val.ovlan & 0x1ff, 0);
if ((f->fs.hash || is_t6(adap->params.chip)) && f->fs.type)
cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1);
/* The zeroing of the filter rule below clears the filter valid,
* pending, locked flags, l2t pointer, etc. so it's all we need for
* this operation.
*/
memset(f, 0, sizeof(*f));
}
void clear_all_filters(struct adapter *adapter)
{
struct net_device *dev = adapter->port[0];
unsigned int i;
if (adapter->tids.hpftid_tab) {
struct filter_entry *f = &adapter->tids.hpftid_tab[0];
for (i = 0; i < adapter->tids.nhpftids; i++, f++)
if (f->valid || f->pending)
cxgb4_del_filter(dev, i, &f->fs);
}
if (adapter->tids.ftid_tab) {
struct filter_entry *f = &adapter->tids.ftid_tab[0];
unsigned int max_ftid = adapter->tids.nftids +
adapter->tids.nsftids +
adapter->tids.nhpftids;
/* Clear all TCAM filters */
for (i = adapter->tids.nhpftids; i < max_ftid; i++, f++)
if (f->valid || f->pending)
cxgb4_del_filter(dev, i, &f->fs);
}
/* Clear all hash filters */
if (is_hashfilter(adapter) && adapter->tids.tid_tab) {
struct filter_entry *f;
unsigned int sb;
for (i = adapter->tids.hash_base;
i <= adapter->tids.ntids; i++) {
f = (struct filter_entry *)
adapter->tids.tid_tab[i];
if (f && (f->valid || f->pending))
cxgb4_del_filter(dev, f->tid, &f->fs);
}
sb = t4_read_reg(adapter, LE_DB_SRVR_START_INDEX_A);
for (i = 0; i < sb; i++) {
f = (struct filter_entry *)adapter->tids.tid_tab[i];
if (f && (f->valid || f->pending))
cxgb4_del_filter(dev, f->tid, &f->fs);
}
}
}
/* Fill up default masks for set match fields. */
static void fill_default_mask(struct ch_filter_specification *fs)
{
unsigned int lip = 0, lip_mask = 0;
unsigned int fip = 0, fip_mask = 0;
unsigned int i;
if (fs->val.iport && !fs->mask.iport)
fs->mask.iport |= ~0;
if (fs->val.fcoe && !fs->mask.fcoe)
fs->mask.fcoe |= ~0;
if (fs->val.matchtype && !fs->mask.matchtype)
fs->mask.matchtype |= ~0;
if (fs->val.macidx && !fs->mask.macidx)
fs->mask.macidx |= ~0;
if (fs->val.ethtype && !fs->mask.ethtype)
fs->mask.ethtype |= ~0;
if (fs->val.ivlan && !fs->mask.ivlan)
fs->mask.ivlan |= ~0;
if (fs->val.ovlan && !fs->mask.ovlan)
fs->mask.ovlan |= ~0;
if (fs->val.frag && !fs->mask.frag)
fs->mask.frag |= ~0;
if (fs->val.tos && !fs->mask.tos)
fs->mask.tos |= ~0;
if (fs->val.proto && !fs->mask.proto)
fs->mask.proto |= ~0;
if (fs->val.pfvf_vld && !fs->mask.pfvf_vld)
fs->mask.pfvf_vld |= ~0;
if (fs->val.pf && !fs->mask.pf)
fs->mask.pf |= ~0;
if (fs->val.vf && !fs->mask.vf)
fs->mask.vf |= ~0;
for (i = 0; i < ARRAY_SIZE(fs->val.lip); i++) {
lip |= fs->val.lip[i];
lip_mask |= fs->mask.lip[i];
fip |= fs->val.fip[i];
fip_mask |= fs->mask.fip[i];
}
if (lip && !lip_mask)
memset(fs->mask.lip, ~0, sizeof(fs->mask.lip));
if (fip && !fip_mask)
memset(fs->mask.fip, ~0, sizeof(fs->mask.lip));
if (fs->val.lport && !fs->mask.lport)
fs->mask.lport = ~0;
if (fs->val.fport && !fs->mask.fport)
fs->mask.fport = ~0;
}
static bool is_addr_all_mask(u8 *ipmask, int family)
{
if (family == AF_INET) {
struct in_addr *addr;
addr = (struct in_addr *)ipmask;
if (addr->s_addr == 0xffffffff)
return true;
} else if (family == AF_INET6) {
struct in6_addr *addr6;
addr6 = (struct in6_addr *)ipmask;
if (addr6->s6_addr32[0] == 0xffffffff &&
addr6->s6_addr32[1] == 0xffffffff &&
addr6->s6_addr32[2] == 0xffffffff &&
addr6->s6_addr32[3] == 0xffffffff)
return true;
}
return false;
}
static bool is_inaddr_any(u8 *ip, int family)
{
int addr_type;
if (family == AF_INET) {
struct in_addr *addr;
addr = (struct in_addr *)ip;
if (addr->s_addr == htonl(INADDR_ANY))
return true;
} else if (family == AF_INET6) {
struct in6_addr *addr6;
addr6 = (struct in6_addr *)ip;
addr_type = ipv6_addr_type((const struct in6_addr *)
&addr6);
if (addr_type == IPV6_ADDR_ANY)
return true;
}
return false;
}
bool is_filter_exact_match(struct adapter *adap,
struct ch_filter_specification *fs)
{
struct tp_params *tp = &adap->params.tp;
u64 hash_filter_mask = tp->hash_filter_mask;
u64 ntuple_mask = 0;
if (!is_hashfilter(adap))
return false;
/* Keep tunnel VNI match disabled for hash-filters for now */
if (fs->mask.encap_vld)
return false;
if (fs->type) {
if (is_inaddr_any(fs->val.fip, AF_INET6) ||
!is_addr_all_mask(fs->mask.fip, AF_INET6))
return false;
if (is_inaddr_any(fs->val.lip, AF_INET6) ||
!is_addr_all_mask(fs->mask.lip, AF_INET6))
return false;
} else {
if (is_inaddr_any(fs->val.fip, AF_INET) ||
!is_addr_all_mask(fs->mask.fip, AF_INET))
return false;
if (is_inaddr_any(fs->val.lip, AF_INET) ||
!is_addr_all_mask(fs->mask.lip, AF_INET))
return false;
}
if (!fs->val.lport || fs->mask.lport != 0xffff)
return false;
if (!fs->val.fport || fs->mask.fport != 0xffff)
return false;
/* calculate tuple mask and compare with mask configured in hw */
if (tp->fcoe_shift >= 0)
ntuple_mask |= (u64)fs->mask.fcoe << tp->fcoe_shift;
if (tp->port_shift >= 0)
ntuple_mask |= (u64)fs->mask.iport << tp->port_shift;
if (tp->vnic_shift >= 0) {
if ((adap->params.tp.ingress_config & VNIC_F))
ntuple_mask |= (u64)fs->mask.pfvf_vld << tp->vnic_shift;
else
ntuple_mask |= (u64)fs->mask.ovlan_vld <<
tp->vnic_shift;
}
if (tp->vlan_shift >= 0)
ntuple_mask |= (u64)fs->mask.ivlan << tp->vlan_shift;
if (tp->tos_shift >= 0)
ntuple_mask |= (u64)fs->mask.tos << tp->tos_shift;
if (tp->protocol_shift >= 0)
ntuple_mask |= (u64)fs->mask.proto << tp->protocol_shift;
if (tp->ethertype_shift >= 0)
ntuple_mask |= (u64)fs->mask.ethtype << tp->ethertype_shift;
if (tp->macmatch_shift >= 0)
ntuple_mask |= (u64)fs->mask.macidx << tp->macmatch_shift;
if (tp->matchtype_shift >= 0)
ntuple_mask |= (u64)fs->mask.matchtype << tp->matchtype_shift;
if (tp->frag_shift >= 0)
ntuple_mask |= (u64)fs->mask.frag << tp->frag_shift;
if (ntuple_mask != hash_filter_mask)
return false;
return true;
}
static u64 hash_filter_ntuple(struct ch_filter_specification *fs,
struct net_device *dev)
{
struct adapter *adap = netdev2adap(dev);
struct tp_params *tp = &adap->params.tp;
u64 ntuple = 0;
/* Initialize each of the fields which we care about which are present
* in the Compressed Filter Tuple.
*/
if (tp->vlan_shift >= 0 && fs->mask.ivlan)
ntuple |= (FT_VLAN_VLD_F | fs->val.ivlan) << tp->vlan_shift;
if (tp->port_shift >= 0 && fs->mask.iport)
ntuple |= (u64)fs->val.iport << tp->port_shift;
if (tp->protocol_shift >= 0) {
if (!fs->val.proto)
ntuple |= (u64)IPPROTO_TCP << tp->protocol_shift;
else
ntuple |= (u64)fs->val.proto << tp->protocol_shift;
}
if (tp->tos_shift >= 0 && fs->mask.tos)
ntuple |= (u64)(fs->val.tos) << tp->tos_shift;
if (tp->vnic_shift >= 0) {
if ((adap->params.tp.ingress_config & USE_ENC_IDX_F) &&
fs->mask.encap_vld)
ntuple |= (u64)((fs->val.encap_vld << 16) |
(fs->val.ovlan)) << tp->vnic_shift;
else if ((adap->params.tp.ingress_config & VNIC_F) &&
fs->mask.pfvf_vld)
ntuple |= (u64)((fs->val.pfvf_vld << 16) |
(fs->val.pf << 13) |
(fs->val.vf)) << tp->vnic_shift;
else
ntuple |= (u64)((fs->val.ovlan_vld << 16) |
(fs->val.ovlan)) << tp->vnic_shift;
}
if (tp->macmatch_shift >= 0 && fs->mask.macidx)
ntuple |= (u64)(fs->val.macidx) << tp->macmatch_shift;
if (tp->ethertype_shift >= 0 && fs->mask.ethtype)
ntuple |= (u64)(fs->val.ethtype) << tp->ethertype_shift;
if (tp->matchtype_shift >= 0 && fs->mask.matchtype)
ntuple |= (u64)(fs->val.matchtype) << tp->matchtype_shift;
if (tp->frag_shift >= 0 && fs->mask.frag)
ntuple |= (u64)(fs->val.frag) << tp->frag_shift;
if (tp->fcoe_shift >= 0 && fs->mask.fcoe)
ntuple |= (u64)(fs->val.fcoe) << tp->fcoe_shift;
return ntuple;
}
static void mk_act_open_req6(struct filter_entry *f, struct sk_buff *skb,
unsigned int qid_filterid, struct adapter *adap)
{
struct cpl_t6_act_open_req6 *t6req = NULL;
struct cpl_act_open_req6 *req = NULL;
t6req = (struct cpl_t6_act_open_req6 *)__skb_put(skb, sizeof(*t6req));
INIT_TP_WR(t6req, 0);
req = (struct cpl_act_open_req6 *)t6req;
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, qid_filterid));
req->local_port = cpu_to_be16(f->fs.val.lport);
req->peer_port = cpu_to_be16(f->fs.val.fport);
req->local_ip_hi = *(__be64 *)(&f->fs.val.lip);
req->local_ip_lo = *(((__be64 *)&f->fs.val.lip) + 1);
req->peer_ip_hi = *(__be64 *)(&f->fs.val.fip);
req->peer_ip_lo = *(((__be64 *)&f->fs.val.fip) + 1);
req->opt0 = cpu_to_be64(NAGLE_V(f->fs.newvlan == VLAN_REMOVE ||
f->fs.newvlan == VLAN_REWRITE) |
DELACK_V(f->fs.hitcnts) |
L2T_IDX_V(f->l2t ? f->l2t->idx : 0) |
SMAC_SEL_V((cxgb4_port_viid(f->dev) &
0x7F) << 1) |
TX_CHAN_V(f->fs.eport) |
NO_CONG_V(f->fs.rpttid) |
ULP_MODE_V(f->fs.nat_mode ?
ULP_MODE_TCPDDP : ULP_MODE_NONE) |
TCAM_BYPASS_F | NON_OFFLOAD_F);
t6req->params = cpu_to_be64(FILTER_TUPLE_V(hash_filter_ntuple(&f->fs,
f->dev)));
t6req->opt2 = htonl(RSS_QUEUE_VALID_F |
RSS_QUEUE_V(f->fs.iq) |
TX_QUEUE_V(f->fs.nat_mode) |
T5_OPT_2_VALID_F |
RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
(f->fs.dirsteer << 1)) |
PACE_V((f->fs.maskhash) |
((f->fs.dirsteerhash) << 1)) |
CCTRL_ECN_V(f->fs.action == FILTER_SWITCH));
}
static void mk_act_open_req(struct filter_entry *f, struct sk_buff *skb,
unsigned int qid_filterid, struct adapter *adap)
{
struct cpl_t6_act_open_req *t6req = NULL;
struct cpl_act_open_req *req = NULL;
t6req = (struct cpl_t6_act_open_req *)__skb_put(skb, sizeof(*t6req));
INIT_TP_WR(t6req, 0);
req = (struct cpl_act_open_req *)t6req;
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, qid_filterid));
req->local_port = cpu_to_be16(f->fs.val.lport);
req->peer_port = cpu_to_be16(f->fs.val.fport);
memcpy(&req->local_ip, f->fs.val.lip, 4);
memcpy(&req->peer_ip, f->fs.val.fip, 4);
req->opt0 = cpu_to_be64(NAGLE_V(f->fs.newvlan == VLAN_REMOVE ||
f->fs.newvlan == VLAN_REWRITE) |
DELACK_V(f->fs.hitcnts) |
L2T_IDX_V(f->l2t ? f->l2t->idx : 0) |
SMAC_SEL_V((cxgb4_port_viid(f->dev) &
0x7F) << 1) |
TX_CHAN_V(f->fs.eport) |
NO_CONG_V(f->fs.rpttid) |
ULP_MODE_V(f->fs.nat_mode ?
ULP_MODE_TCPDDP : ULP_MODE_NONE) |
TCAM_BYPASS_F | NON_OFFLOAD_F);
t6req->params = cpu_to_be64(FILTER_TUPLE_V(hash_filter_ntuple(&f->fs,
f->dev)));
t6req->opt2 = htonl(RSS_QUEUE_VALID_F |
RSS_QUEUE_V(f->fs.iq) |
TX_QUEUE_V(f->fs.nat_mode) |
T5_OPT_2_VALID_F |
RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
(f->fs.dirsteer << 1)) |
PACE_V((f->fs.maskhash) |
((f->fs.dirsteerhash) << 1)) |
CCTRL_ECN_V(f->fs.action == FILTER_SWITCH));
}
static int cxgb4_set_hash_filter(struct net_device *dev,
struct ch_filter_specification *fs,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
struct port_info *pi = netdev_priv(dev);
struct tid_info *t = &adapter->tids;
struct filter_entry *f;
struct sk_buff *skb;
int iq, atid, size;
int ret = 0;
u32 iconf;
fill_default_mask(fs);
ret = validate_filter(dev, fs);
if (ret)
return ret;
iq = get_filter_steerq(dev, fs);
if (iq < 0)
return iq;
f = kzalloc(sizeof(*f), GFP_KERNEL);
if (!f)
return -ENOMEM;
f->fs = *fs;
f->ctx = ctx;
f->dev = dev;
f->fs.iq = iq;
/* If the new filter requires loopback Destination MAC and/or VLAN
* rewriting then we need to allocate a Layer 2 Table (L2T) entry for
* the filter.
*/
if (f->fs.newdmac || f->fs.newvlan) {
/* allocate L2T entry for new filter */
f->l2t = t4_l2t_alloc_switching(adapter, f->fs.vlan,
f->fs.eport, f->fs.dmac);
if (!f->l2t) {
ret = -ENOMEM;
goto out_err;
}
}
/* If the new filter requires loopback Source MAC rewriting then
* we need to allocate a SMT entry for the filter.
*/
if (f->fs.newsmac) {
f->smt = cxgb4_smt_alloc_switching(f->dev, f->fs.smac);
if (!f->smt) {
if (f->l2t) {
cxgb4_l2t_release(f->l2t);
f->l2t = NULL;
}
ret = -ENOMEM;
goto free_l2t;
}
}
atid = cxgb4_alloc_atid(t, f);
if (atid < 0) {
ret = atid;
goto free_smt;
}
iconf = adapter->params.tp.ingress_config;
if (iconf & VNIC_F) {
f->fs.val.ovlan = (fs->val.pf << 13) | fs->val.vf;
f->fs.mask.ovlan = (fs->mask.pf << 13) | fs->mask.vf;
f->fs.val.ovlan_vld = fs->val.pfvf_vld;
f->fs.mask.ovlan_vld = fs->mask.pfvf_vld;
} else if (iconf & USE_ENC_IDX_F) {
if (f->fs.val.encap_vld) {
struct port_info *pi = netdev_priv(f->dev);
u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
/* allocate MPS TCAM entry */
ret = t4_alloc_encap_mac_filt(adapter, pi->viid,
match_all_mac,
match_all_mac,
f->fs.val.vni,
f->fs.mask.vni,
0, 1, 1);
if (ret < 0)
goto free_atid;
f->fs.val.ovlan = ret;
f->fs.mask.ovlan = 0xffff;
f->fs.val.ovlan_vld = 1;
f->fs.mask.ovlan_vld = 1;
}
}
size = sizeof(struct cpl_t6_act_open_req);
if (f->fs.type) {
ret = cxgb4_clip_get(f->dev, (const u32 *)&f->fs.val.lip, 1);
if (ret)
goto free_mps;
skb = alloc_skb(size, GFP_KERNEL);
if (!skb) {
ret = -ENOMEM;
goto free_clip;
}
mk_act_open_req6(f, skb,
((adapter->sge.fw_evtq.abs_id << 14) | atid),
adapter);
} else {
skb = alloc_skb(size, GFP_KERNEL);
if (!skb) {
ret = -ENOMEM;
goto free_mps;
}
mk_act_open_req(f, skb,
((adapter->sge.fw_evtq.abs_id << 14) | atid),
adapter);
}
f->pending = 1;
set_wr_txq(skb, CPL_PRIORITY_SETUP, f->fs.val.iport & 0x3);
t4_ofld_send(adapter, skb);
return 0;
free_clip:
cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1);
free_mps:
if (f->fs.val.encap_vld && f->fs.val.ovlan_vld)
t4_free_encap_mac_filt(adapter, pi->viid, f->fs.val.ovlan, 1);
free_atid:
cxgb4_free_atid(t, atid);
free_smt:
if (f->smt) {
cxgb4_smt_release(f->smt);
f->smt = NULL;
}
free_l2t:
if (f->l2t) {
cxgb4_l2t_release(f->l2t);
f->l2t = NULL;
}
out_err:
kfree(f);
return ret;
}
/* Check a Chelsio Filter Request for validity, convert it into our internal
* format and send it to the hardware. Return 0 on success, an error number
* otherwise. We attach any provided filter operation context to the internal
* filter specification in order to facilitate signaling completion of the
* operation.
*/
int __cxgb4_set_filter(struct net_device *dev, int ftid,
struct ch_filter_specification *fs,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
unsigned int max_fidx, fidx, chip_ver;
int iq, ret, filter_id = ftid;
struct filter_entry *f, *tab;
u32 iconf;
chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip);
if (fs->hash) {
if (is_hashfilter(adapter))
return cxgb4_set_hash_filter(dev, fs, ctx);
netdev_err(dev, "%s: Exact-match filters only supported with Hash Filter configuration\n",
__func__);
return -EINVAL;
}
max_fidx = adapter->tids.nftids + adapter->tids.nhpftids;
if (filter_id != (max_fidx + adapter->tids.nsftids - 1) &&
filter_id >= max_fidx)
return -E2BIG;
fill_default_mask(fs);
ret = validate_filter(dev, fs);
if (ret)
return ret;
iq = get_filter_steerq(dev, fs);
if (iq < 0)
return iq;
if (fs->prio) {
tab = &adapter->tids.hpftid_tab[0];
} else {
tab = &adapter->tids.ftid_tab[0];
filter_id = ftid - adapter->tids.nhpftids;
}
/* IPv6 filters occupy four slots and must be aligned on
* four-slot boundaries. IPv4 filters only occupy a single
* slot and have no alignment requirements but writing a new
* IPv4 filter into the middle of an existing IPv6 filter
* requires clearing the old IPv6 filter and hence we prevent
* insertion.
*/
if (fs->type == 0) { /* IPv4 */
/* For T6, If our IPv4 filter isn't being written to a
* multiple of two filter index and there's an IPv6
* filter at the multiple of 2 base slot, then we need
* to delete that IPv6 filter ...
* For adapters below T6, IPv6 filter occupies 4 entries.
* Hence we need to delete the filter in multiple of 4 slot.
*/
if (chip_ver < CHELSIO_T6)
fidx = filter_id & ~0x3;
else
fidx = filter_id & ~0x1;
if (fidx != filter_id && tab[fidx].fs.type) {
f = &tab[fidx];
if (f->valid) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 requires 4 slots and is occupying slots %u to %u\n",
fidx, fidx + 3);
return -EINVAL;
}
}
} else { /* IPv6 */
if (chip_ver < CHELSIO_T6) {
/* Ensure that the IPv6 filter is aligned on a
* multiple of 4 boundary.
*/
if (filter_id & 0x3) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 must be aligned on a 4-slot boundary\n");
return -EINVAL;
}
/* Check all except the base overlapping IPv4 filter
* slots.
*/
for (fidx = filter_id + 1; fidx < filter_id + 4;
fidx++) {
f = &tab[fidx];
if (f->valid) {
dev_err(adapter->pdev_dev,
"Invalid location. IPv6 requires 4 slots and an IPv4 filter exists at %u\n",
fidx);
return -EBUSY;
}
}
} else {
/* For T6, CLIP being enabled, IPv6 filter would occupy
* 2 entries.
*/
if (filter_id & 0x1)
return -EINVAL;
/* Check overlapping IPv4 filter slot */
fidx = filter_id + 1;
f = &tab[fidx];
if (f->valid) {
pr_err("%s: IPv6 filter requires 2 indices. IPv4 filter already present at %d. Please remove IPv4 filter first.\n",
__func__, fidx);
return -EBUSY;
}
}
}
/* Check to make sure that provided filter index is not
* already in use by someone else
*/
f = &tab[filter_id];
if (f->valid)
return -EBUSY;
if (fs->prio) {
fidx = filter_id + adapter->tids.hpftid_base;
ret = cxgb4_set_hpftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET);
} else {
fidx = filter_id + adapter->tids.ftid_base;
ret = cxgb4_set_ftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET,
chip_ver);
}
if (ret)
return ret;
/* Check t make sure the filter requested is writable ... */
ret = writable_filter(f);
if (ret)
goto free_tid;
if (is_t6(adapter->params.chip) && fs->type &&
ipv6_addr_type((const struct in6_addr *)fs->val.lip) !=
IPV6_ADDR_ANY) {
ret = cxgb4_clip_get(dev, (const u32 *)&fs->val.lip, 1);
if (ret)
goto free_tid;
}
/* Convert the filter specification into our internal format.
* We copy the PF/VF specification into the Outer VLAN field
* here so the rest of the code -- including the interface to
* the firmware -- doesn't have to constantly do these checks.
*/
f->fs = *fs;
f->fs.iq = iq;
f->dev = dev;
iconf = adapter->params.tp.ingress_config;
if (iconf & VNIC_F) {
f->fs.val.ovlan = (fs->val.pf << 13) | fs->val.vf;
f->fs.mask.ovlan = (fs->mask.pf << 13) | fs->mask.vf;
f->fs.val.ovlan_vld = fs->val.pfvf_vld;
f->fs.mask.ovlan_vld = fs->mask.pfvf_vld;
} else if (iconf & USE_ENC_IDX_F) {
if (f->fs.val.encap_vld) {
struct port_info *pi = netdev_priv(f->dev);
u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
/* allocate MPS TCAM entry */
ret = t4_alloc_encap_mac_filt(adapter, pi->viid,
match_all_mac,
match_all_mac,
f->fs.val.vni,
f->fs.mask.vni,
0, 1, 1);
if (ret < 0)
goto free_tid;
f->fs.val.ovlan = ret;
f->fs.mask.ovlan = 0x1ff;
f->fs.val.ovlan_vld = 1;
f->fs.mask.ovlan_vld = 1;
}
}
/* Attempt to set the filter. If we don't succeed, we clear
* it and return the failure.
*/
f->ctx = ctx;
f->tid = fidx; /* Save the actual tid */
ret = set_filter_wr(adapter, ftid);
if (ret)
goto free_tid;
return ret;
free_tid:
if (f->fs.prio)
cxgb4_clear_hpftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET);
else
cxgb4_clear_ftid(&adapter->tids, filter_id,
fs->type ? PF_INET6 : PF_INET,
chip_ver);
clear_filter(adapter, f);
return ret;
}
static int cxgb4_del_hash_filter(struct net_device *dev, int filter_id,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
struct tid_info *t = &adapter->tids;
struct cpl_abort_req *abort_req;
struct cpl_abort_rpl *abort_rpl;
struct cpl_set_tcb_field *req;
struct ulptx_idata *aligner;
struct work_request_hdr *wr;
struct filter_entry *f;
struct sk_buff *skb;
unsigned int wrlen;
int ret;
netdev_dbg(dev, "%s: filter_id = %d ; nftids = %d\n",
__func__, filter_id, adapter->tids.nftids);
if (tid_out_of_range(t, filter_id))
return -E2BIG;
f = lookup_tid(t, filter_id);
if (!f) {
netdev_err(dev, "%s: no filter entry for filter_id = %d",
__func__, filter_id);
return -EINVAL;
}
ret = writable_filter(f);
if (ret)
return ret;
if (!f->valid)
return -EINVAL;
f->ctx = ctx;
f->pending = 1;
wrlen = roundup(sizeof(*wr) + (sizeof(*req) + sizeof(*aligner))
+ sizeof(*abort_req) + sizeof(*abort_rpl), 16);
skb = alloc_skb(wrlen, GFP_KERNEL);
if (!skb) {
netdev_err(dev, "%s: could not allocate skb ..\n", __func__);
return -ENOMEM;
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3);
req = (struct cpl_set_tcb_field *)__skb_put(skb, wrlen);
INIT_ULPTX_WR(req, wrlen, 0, 0);
wr = (struct work_request_hdr *)req;
wr++;
req = (struct cpl_set_tcb_field *)wr;
mk_set_tcb_ulp(f, req, TCB_RSS_INFO_W, TCB_RSS_INFO_V(TCB_RSS_INFO_M),
TCB_RSS_INFO_V(adapter->sge.fw_evtq.abs_id), 0, 1);
aligner = (struct ulptx_idata *)(req + 1);
abort_req = (struct cpl_abort_req *)(aligner + 1);
mk_abort_req_ulp(abort_req, f->tid);
abort_rpl = (struct cpl_abort_rpl *)(abort_req + 1);
mk_abort_rpl_ulp(abort_rpl, f->tid);
t4_ofld_send(adapter, skb);
return 0;
}
/* Check a delete filter request for validity and send it to the hardware.
* Return 0 on success, an error number otherwise. We attach any provided
* filter operation context to the internal filter specification in order to
* facilitate signaling completion of the operation.
*/
int __cxgb4_del_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs,
struct filter_ctx *ctx)
{
struct adapter *adapter = netdev2adap(dev);
unsigned int max_fidx, chip_ver;
struct filter_entry *f;
int ret;
chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip);
if (fs && fs->hash) {
if (is_hashfilter(adapter))
return cxgb4_del_hash_filter(dev, filter_id, ctx);
netdev_err(dev, "%s: Exact-match filters only supported with Hash Filter configuration\n",
__func__);
return -EINVAL;
}
max_fidx = adapter->tids.nftids + adapter->tids.nhpftids;
if (filter_id != (max_fidx + adapter->tids.nsftids - 1) &&
filter_id >= max_fidx)
return -E2BIG;
if (filter_id < adapter->tids.nhpftids)
f = &adapter->tids.hpftid_tab[filter_id];
else
f = &adapter->tids.ftid_tab[filter_id - adapter->tids.nhpftids];
ret = writable_filter(f);
if (ret)
return ret;
if (f->valid) {
f->ctx = ctx;
if (f->fs.prio)
cxgb4_clear_hpftid(&adapter->tids,
f->tid - adapter->tids.hpftid_base,
f->fs.type ? PF_INET6 : PF_INET);
else
cxgb4_clear_ftid(&adapter->tids,
f->tid - adapter->tids.ftid_base,
f->fs.type ? PF_INET6 : PF_INET,
chip_ver);
return del_filter_wr(adapter, filter_id);
}
/* If the caller has passed in a Completion Context then we need to
* mark it as a successful completion so they don't stall waiting
* for it.
*/
if (ctx) {
ctx->result = 0;
complete(&ctx->completion);
}
return ret;
}
int cxgb4_set_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs)
{
struct filter_ctx ctx;
int ret;
init_completion(&ctx.completion);
ret = __cxgb4_set_filter(dev, filter_id, fs, &ctx);
if (ret)
goto out;
/* Wait for reply */
ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
if (!ret)
return -ETIMEDOUT;
ret = ctx.result;
out:
return ret;
}
int cxgb4_del_filter(struct net_device *dev, int filter_id,
struct ch_filter_specification *fs)
{
struct filter_ctx ctx;
int ret;
if (netdev2adap(dev)->flags & CXGB4_SHUTTING_DOWN)
return 0;
init_completion(&ctx.completion);
ret = __cxgb4_del_filter(dev, filter_id, fs, &ctx);
if (ret)
goto out;
/* Wait for reply */
ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
if (!ret)
return -ETIMEDOUT;
ret = ctx.result;
out:
return ret;
}
static int configure_filter_tcb(struct adapter *adap, unsigned int tid,
struct filter_entry *f)
{
if (f->fs.hitcnts)
set_tcb_field(adap, f, tid, TCB_TIMESTAMP_W,
TCB_TIMESTAMP_V(TCB_TIMESTAMP_M) |
TCB_RTT_TS_RECENT_AGE_V(TCB_RTT_TS_RECENT_AGE_M),
TCB_TIMESTAMP_V(0ULL) |
TCB_RTT_TS_RECENT_AGE_V(0ULL),
1);
if (f->fs.newdmac)
set_tcb_tflag(adap, f, tid, TF_CCTRL_ECE_S, 1,
1);
if (f->fs.newvlan == VLAN_INSERT ||
f->fs.newvlan == VLAN_REWRITE)
set_tcb_tflag(adap, f, tid, TF_CCTRL_RFR_S, 1,
1);
if (f->fs.newsmac)
configure_filter_smac(adap, f);
if (f->fs.nat_mode) {
switch (f->fs.nat_mode) {
case NAT_MODE_DIP:
set_nat_params(adap, f, tid, true, false, false, false);
break;
case NAT_MODE_DIP_DP:
set_nat_params(adap, f, tid, true, false, true, false);
break;
case NAT_MODE_DIP_DP_SIP:
set_nat_params(adap, f, tid, true, true, true, false);
break;
case NAT_MODE_DIP_DP_SP:
set_nat_params(adap, f, tid, true, false, true, true);
break;
case NAT_MODE_SIP_SP:
set_nat_params(adap, f, tid, false, true, false, true);
break;
case NAT_MODE_DIP_SIP_SP:
set_nat_params(adap, f, tid, true, true, false, true);
break;
case NAT_MODE_ALL:
set_nat_params(adap, f, tid, true, true, true, true);
break;
default:
pr_err("%s: Invalid NAT mode: %d\n",
__func__, f->fs.nat_mode);
return -EINVAL;
}
}
return 0;
}
void hash_del_filter_rpl(struct adapter *adap,
const struct cpl_abort_rpl_rss *rpl)
{
unsigned int status = rpl->status;
struct tid_info *t = &adap->tids;
unsigned int tid = GET_TID(rpl);
struct filter_ctx *ctx = NULL;
struct filter_entry *f;
dev_dbg(adap->pdev_dev, "%s: status = %u; tid = %u\n",
__func__, status, tid);
f = lookup_tid(t, tid);
if (!f) {
dev_err(adap->pdev_dev, "%s:could not find filter entry",
__func__);
return;
}
ctx = f->ctx;
f->ctx = NULL;
clear_filter(adap, f);
cxgb4_remove_tid(t, 0, tid, 0);
kfree(f);
if (ctx) {
ctx->result = 0;
complete(&ctx->completion);
}
}
void hash_filter_rpl(struct adapter *adap, const struct cpl_act_open_rpl *rpl)
{
unsigned int ftid = TID_TID_G(AOPEN_ATID_G(ntohl(rpl->atid_status)));
unsigned int status = AOPEN_STATUS_G(ntohl(rpl->atid_status));
struct tid_info *t = &adap->tids;
unsigned int tid = GET_TID(rpl);
struct filter_ctx *ctx = NULL;
struct filter_entry *f;
dev_dbg(adap->pdev_dev, "%s: tid = %u; atid = %u; status = %u\n",
__func__, tid, ftid, status);
f = lookup_atid(t, ftid);
if (!f) {
dev_err(adap->pdev_dev, "%s:could not find filter entry",
__func__);
return;
}
ctx = f->ctx;
f->ctx = NULL;
switch (status) {
case CPL_ERR_NONE:
f->tid = tid;
f->pending = 0;
f->valid = 1;
cxgb4_insert_tid(t, f, f->tid, 0);
cxgb4_free_atid(t, ftid);
if (ctx) {
ctx->tid = f->tid;
ctx->result = 0;
}
if (configure_filter_tcb(adap, tid, f)) {
clear_filter(adap, f);
cxgb4_remove_tid(t, 0, tid, 0);
kfree(f);
if (ctx) {
ctx->result = -EINVAL;
complete(&ctx->completion);
}
return;
}
break;
default:
if (status != CPL_ERR_TCAM_FULL)
dev_err(adap->pdev_dev, "%s: filter creation PROBLEM; status = %u\n",
__func__, status);
if (ctx) {
if (status == CPL_ERR_TCAM_FULL)
ctx->result = -ENOSPC;
else
ctx->result = -EINVAL;
}
clear_filter(adap, f);
cxgb4_free_atid(t, ftid);
kfree(f);
}
if (ctx)
complete(&ctx->completion);
}
/* Handle a filter write/deletion reply. */
void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
{
unsigned int tid = GET_TID(rpl);
struct filter_entry *f = NULL;
unsigned int max_fidx;
int idx;
max_fidx = adap->tids.nftids + adap->tids.nsftids;
/* Get the corresponding filter entry for this tid */
if (adap->tids.ftid_tab) {
idx = tid - adap->tids.hpftid_base;
if (idx < adap->tids.nhpftids) {
f = &adap->tids.hpftid_tab[idx];
} else {
/* Check this in normal filter region */
idx = tid - adap->tids.ftid_base;
if (idx >= max_fidx)
return;
f = &adap->tids.ftid_tab[idx];
idx += adap->tids.nhpftids;
}
if (f->tid != tid)
return;
}
/* We found the filter entry for this tid */
if (f) {
unsigned int ret = TCB_COOKIE_G(rpl->cookie);
struct filter_ctx *ctx;
/* Pull off any filter operation context attached to the
* filter.
*/
ctx = f->ctx;
f->ctx = NULL;
if (ret == FW_FILTER_WR_FLT_DELETED) {
/* Clear the filter when we get confirmation from the
* hardware that the filter has been deleted.
*/
clear_filter(adap, f);
if (ctx)
ctx->result = 0;
} else if (ret == FW_FILTER_WR_FLT_ADDED) {
int err = 0;
if (f->fs.newsmac)
err = configure_filter_smac(adap, f);
if (!err) {
f->pending = 0; /* async setup completed */
f->valid = 1;
if (ctx) {
ctx->result = 0;
ctx->tid = idx;
}
} else {
clear_filter(adap, f);
if (ctx)
ctx->result = err;
}
} else {
/* Something went wrong. Issue a warning about the
* problem and clear everything out.
*/
dev_err(adap->pdev_dev, "filter %u setup failed with error %u\n",
idx, ret);
clear_filter(adap, f);
if (ctx)
ctx->result = -EINVAL;
}
if (ctx)
complete(&ctx->completion);
}
}
void init_hash_filter(struct adapter *adap)
{
u32 reg;
/* On T6, verify the necessary register configs and warn the user in
* case of improper config
*/
if (is_t6(adap->params.chip)) {
if (is_offload(adap)) {
if (!(t4_read_reg(adap, TP_GLOBAL_CONFIG_A)
& ACTIVEFILTERCOUNTS_F)) {
dev_err(adap->pdev_dev, "Invalid hash filter + ofld config\n");
return;
}
} else {
reg = t4_read_reg(adap, LE_DB_RSP_CODE_0_A);
if (TCAM_ACTV_HIT_G(reg) != 4) {
dev_err(adap->pdev_dev, "Invalid hash filter config\n");
return;
}
reg = t4_read_reg(adap, LE_DB_RSP_CODE_1_A);
if (HASH_ACTV_HIT_G(reg) != 4) {
dev_err(adap->pdev_dev, "Invalid hash filter config\n");
return;
}
}
} else {
dev_err(adap->pdev_dev, "Hash filter supported only on T6\n");
return;
}
adap->params.hash_filter = 1;
}