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Commit d4134d41 authored by Steen Hegelund's avatar Steen Hegelund Committed by David S. Miller
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net: microchip: sparx5: Add raw VCAP debugFS support for the VCAP API 

This adds support for decoding VCAP rules with a minimum number of
attributes: address, rule size and keyset.

This allows for a quick inspection of a VCAP instance to determine if the
rule are present and in the correct order.
Signed-off-by: default avatarSteen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e0305cc1
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Inline Side-by-side
Showing with 535 additions and 56 deletions
drivers/net/ethernet/microchip/sparx5/sparx5_vcap_debugfs.c
View file @ d4134d41
......@@ -13,11 +13,188 @@
#include "sparx5_vcap_impl.h"
#include "sparx5_vcap_ag_api.h"
static void sparx5_vcap_port_keys(struct sparx5 *sparx5,
struct vcap_admin *admin,
struct sparx5_port *port,
struct vcap_output_print *out)
{
int lookup;
u32 value;
out->prf(out->dst, " port[%02d] (%s): ", port->portno,
netdev_name(port->ndev));
for (lookup = 0; lookup < admin->lookups; ++lookup) {
out->prf(out->dst, "\n Lookup %d: ", lookup);
/* Get lookup state */
value = spx5_rd(sparx5, ANA_ACL_VCAP_S2_CFG(port->portno));
out->prf(out->dst, "\n state: ");
if (ANA_ACL_VCAP_S2_CFG_SEC_ENA_GET(value))
out->prf(out->dst, "on");
else
out->prf(out->dst, "off");
/* Get key selection state */
value = spx5_rd(sparx5,
ANA_ACL_VCAP_S2_KEY_SEL(port->portno, lookup));
out->prf(out->dst, "\n noneth: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_NONETH_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_NONETH_CUSTOM_1:
out->prf(out->dst, "custom1");
break;
case VCAP_IS2_PS_NONETH_CUSTOM_2:
out->prf(out->dst, "custom2");
break;
case VCAP_IS2_PS_NONETH_NO_LOOKUP:
out->prf(out->dst, "none");
break;
}
out->prf(out->dst, "\n ipv4_mc: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_IP4_MC_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_IPV4_MC_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_IPV4_MC_IP4_TCP_UDP_OTHER:
out->prf(out->dst, "ip4_tcp_udp ip4_other");
break;
case VCAP_IS2_PS_IPV4_MC_IP_7TUPLE:
out->prf(out->dst, "ip_7tuple");
break;
case VCAP_IS2_PS_IPV4_MC_IP4_VID:
out->prf(out->dst, "ip4_vid");
break;
}
out->prf(out->dst, "\n ipv4_uc: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_IP4_UC_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_IPV4_UC_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER:
out->prf(out->dst, "ip4_tcp_udp ip4_other");
break;
case VCAP_IS2_PS_IPV4_UC_IP_7TUPLE:
out->prf(out->dst, "ip_7tuple");
break;
}
out->prf(out->dst, "\n ipv6_mc: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_IP6_MC_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_IPV6_MC_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_IPV6_MC_IP_7TUPLE:
out->prf(out->dst, "ip_7tuple");
break;
case VCAP_IS2_PS_IPV6_MC_IP6_VID:
out->prf(out->dst, "ip6_vid");
break;
case VCAP_IS2_PS_IPV6_MC_IP6_STD:
out->prf(out->dst, "ip6_std");
break;
case VCAP_IS2_PS_IPV6_MC_IP4_TCP_UDP_OTHER:
out->prf(out->dst, "ip4_tcp_udp ipv4_other");
break;
}
out->prf(out->dst, "\n ipv6_uc: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_IPV6_UC_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_IPV6_UC_IP_7TUPLE:
out->prf(out->dst, "ip_7tuple");
break;
case VCAP_IS2_PS_IPV6_UC_IP6_STD:
out->prf(out->dst, "ip6_std");
break;
case VCAP_IS2_PS_IPV6_UC_IP4_TCP_UDP_OTHER:
out->prf(out->dst, "ip4_tcp_udp ip4_other");
break;
}
out->prf(out->dst, "\n arp: ");
switch (ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_GET(value)) {
case VCAP_IS2_PS_ARP_MAC_ETYPE:
out->prf(out->dst, "mac_etype");
break;
case VCAP_IS2_PS_ARP_ARP:
out->prf(out->dst, "arp");
break;
}
}
out->prf(out->dst, "\n");
}
static void sparx5_vcap_port_stickies(struct sparx5 *sparx5,
struct vcap_admin *admin,
struct vcap_output_print *out)
{
int lookup;
u32 value;
out->prf(out->dst, " Sticky bits: ");
for (lookup = 0; lookup < admin->lookups; ++lookup) {
out->prf(out->dst, "\n Lookup %d: ", lookup);
/* Get lookup sticky bits */
value = spx5_rd(sparx5, ANA_ACL_SEC_LOOKUP_STICKY(lookup));
if (ANA_ACL_SEC_LOOKUP_STICKY_KEY_SEL_CLM_STICKY_GET(value))
out->prf(out->dst, " sel_clm");
if (ANA_ACL_SEC_LOOKUP_STICKY_KEY_SEL_IRLEG_STICKY_GET(value))
out->prf(out->dst, " sel_irleg");
if (ANA_ACL_SEC_LOOKUP_STICKY_KEY_SEL_ERLEG_STICKY_GET(value))
out->prf(out->dst, " sel_erleg");
if (ANA_ACL_SEC_LOOKUP_STICKY_KEY_SEL_PORT_STICKY_GET(value))
out->prf(out->dst, " sel_port");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_CUSTOM2_STICKY_GET(value))
out->prf(out->dst, " custom2");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_CUSTOM1_STICKY_GET(value))
out->prf(out->dst, " custom1");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_OAM_STICKY_GET(value))
out->prf(out->dst, " oam");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP6_VID_STICKY_GET(value))
out->prf(out->dst, " ip6_vid");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP6_STD_STICKY_GET(value))
out->prf(out->dst, " ip6_std");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP6_TCPUDP_STICKY_GET(value))
out->prf(out->dst, " ip6_tcpudp");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP_7TUPLE_STICKY_GET(value))
out->prf(out->dst, " ip_7tuple");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP4_VID_STICKY_GET(value))
out->prf(out->dst, " ip4_vid");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP4_TCPUDP_STICKY_GET(value))
out->prf(out->dst, " ip4_tcpudp");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_IP4_OTHER_STICKY_GET(value))
out->prf(out->dst, " ip4_other");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_ARP_STICKY_GET(value))
out->prf(out->dst, " arp");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_MAC_SNAP_STICKY_GET(value))
out->prf(out->dst, " mac_snap");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_MAC_LLC_STICKY_GET(value))
out->prf(out->dst, " mac_llc");
if (ANA_ACL_SEC_LOOKUP_STICKY_SEC_TYPE_MAC_ETYPE_STICKY_GET(value))
out->prf(out->dst, " mac_etype");
/* Clear stickies */
spx5_wr(value, sparx5, ANA_ACL_SEC_LOOKUP_STICKY(lookup));
}
out->prf(out->dst, "\n");
}
/* Provide port information via a callback interface */
int sparx5_port_info(struct net_device *ndev,
struct vcap_admin *admin,
struct vcap_output_print *out)
{
/* this will be added later */
struct sparx5_port *port = netdev_priv(ndev);
struct sparx5 *sparx5 = port->sparx5;
const struct vcap_info *vcap;
struct vcap_control *vctrl;
vctrl = sparx5->vcap_ctrl;
vcap = &vctrl->vcaps[admin->vtype];
out->prf(out->dst, "%s:\n", vcap->name);
sparx5_vcap_port_keys(sparx5, admin, port, out);
sparx5_vcap_port_stickies(sparx5, admin, out);
return 0;
}
drivers/net/ethernet/microchip/vcap/vcap_api.c
View file @ d4134d41
......@@ -6,28 +6,7 @@
#include <linux/types.h>
#include "vcap_api.h"
#include "vcap_api_client.h"
#define to_intrule(rule) container_of((rule), struct vcap_rule_internal, data)
/* Private VCAP API rule data */
struct vcap_rule_internal {
struct vcap_rule data; /* provided by the client */
struct list_head list; /* for insertion in the vcap admin list of rules */
struct vcap_admin *admin; /* vcap hw instance */
struct net_device *ndev; /* the interface that the rule applies to */
struct vcap_control *vctrl; /* the client control */
u32 sort_key; /* defines the position in the VCAP */
int keyset_sw; /* subwords in a keyset */
int actionset_sw; /* subwords in an actionset */
int keyset_sw_regs; /* registers in a subword in an keyset */
int actionset_sw_regs; /* registers in a subword in an actionset */
int size; /* the size of the rule: max(entry, action) */
u32 addr; /* address in the VCAP at insertion */
u32 counter_id; /* counter id (if a dedicated counter is available) */
struct vcap_counter counter; /* last read counter value */
};
#include "vcap_api_private.h"
/* Moving a rule in the VCAP address space */
struct vcap_rule_move {
......@@ -36,16 +15,6 @@ struct vcap_rule_move {
int count; /* blocksize of addresses to move */
};
/* Bit iterator for the VCAP cache streams */
struct vcap_stream_iter {
u32 offset; /* bit offset from the stream start */
u32 sw_width; /* subword width in bits */
u32 regs_per_sw; /* registers per subword */
u32 reg_idx; /* current register index */
u32 reg_bitpos; /* bit offset in current register */
const struct vcap_typegroup *tg; /* current typegroup */
};
/* Stores the filter cookie that enabled the port */
struct vcap_enabled_port {
struct list_head list; /* for insertion in enabled ports list */
......@@ -53,7 +22,7 @@ struct vcap_enabled_port {
unsigned long cookie; /* filter that enabled the port */
};
static void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width,
void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width,
const struct vcap_typegroup *tg, u32 offset)
{
memset(itr, 0, sizeof(*itr));
......@@ -74,7 +43,7 @@ static void vcap_iter_skip_tg(struct vcap_stream_iter *itr)
}
}
static void vcap_iter_update(struct vcap_stream_iter *itr)
void vcap_iter_update(struct vcap_stream_iter *itr)
{
int sw_idx, sw_bitpos;
......@@ -86,7 +55,7 @@ static void vcap_iter_update(struct vcap_stream_iter *itr)
itr->reg_bitpos = sw_bitpos % 32;
}
static void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width,
void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width,
const struct vcap_typegroup *tg, u32 offset)
{
vcap_iter_set(itr, sw_width, tg, offset);
......@@ -94,7 +63,7 @@ static void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width,
vcap_iter_update(itr);
}
static void vcap_iter_next(struct vcap_stream_iter *itr)
void vcap_iter_next(struct vcap_stream_iter *itr)
{
itr->offset++;
vcap_iter_skip_tg(itr);
......@@ -179,7 +148,7 @@ static void vcap_encode_typegroups(u32 *stream, int sw_width,
}
/* Return the list of keyfields for the keyset */
static const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl,
const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl,
enum vcap_type vt,
enum vcap_keyfield_set keyset)
{
......@@ -190,7 +159,7 @@ static const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl,
}
/* Return the keyset information for the keyset */
static const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl,
const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl,
enum vcap_type vt,
enum vcap_keyfield_set keyset)
{
......@@ -206,7 +175,7 @@ static const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl,
}
/* Return the typegroup table for the matching keyset (using subword size) */
static const struct vcap_typegroup *
const struct vcap_typegroup *
vcap_keyfield_typegroup(struct vcap_control *vctrl,
enum vcap_type vt, enum vcap_keyfield_set keyset)
{
......@@ -219,7 +188,7 @@ vcap_keyfield_typegroup(struct vcap_control *vctrl,
}
/* Return the number of keyfields in the keyset */
static int vcap_keyfield_count(struct vcap_control *vctrl,
int vcap_keyfield_count(struct vcap_control *vctrl,
enum vcap_type vt, enum vcap_keyfield_set keyset)
{
/* Check that the keyset exists in the vcap keyset list */
......@@ -515,7 +484,7 @@ static int vcap_encode_rule(struct vcap_rule_internal *ri)
return 0;
}
static int vcap_api_check(struct vcap_control *ctrl)
int vcap_api_check(struct vcap_control *ctrl)
{
if (!ctrl) {
pr_err("%s:%d: vcap control is missing\n", __func__, __LINE__);
......
drivers/net/ethernet/microchip/vcap/vcap_api_debugfs.c
View file @ d4134d41
......@@ -5,11 +5,7 @@
*
*/
#include <linux/types.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/netdevice.h>
#include "vcap_api_private.h"
#include "vcap_api_debugfs.h"
struct vcap_admin_debugfs_info {
......@@ -22,6 +18,265 @@ struct vcap_port_debugfs_info {
struct net_device *ndev;
};
static bool vcap_bitarray_zero(int width, u8 *value)
{
int bytes = DIV_ROUND_UP(width, BITS_PER_BYTE);
u8 total = 0, bmask = 0xff;
int rwidth = width;
int idx;
for (idx = 0; idx < bytes; ++idx, rwidth -= BITS_PER_BYTE) {
if (rwidth && rwidth < BITS_PER_BYTE)
bmask = (1 << rwidth) - 1;
total += value[idx] & bmask;
}
return total == 0;
}
static bool vcap_get_bit(u32 *stream, struct vcap_stream_iter *itr)
{
u32 mask = BIT(itr->reg_bitpos);
u32 *p = &stream[itr->reg_idx];
return !!(*p & mask);
}
static void vcap_decode_field(u32 *stream, struct vcap_stream_iter *itr,
int width, u8 *value)
{
int idx;
/* Loop over the field value bits and get the field bits and
* set them in the output value byte array
*/
for (idx = 0; idx < width; idx++) {
u8 bidx = idx & 0x7;
/* Decode one field value bit */
if (vcap_get_bit(stream, itr))
*value |= 1 << bidx;
vcap_iter_next(itr);
if (bidx == 7)
value++;
}
}
/* Verify that the typegroup bits have the correct values */
static int vcap_verify_typegroups(u32 *stream, int sw_width,
const struct vcap_typegroup *tgt, bool mask,
int sw_max)
{
struct vcap_stream_iter iter;
int sw_cnt, idx;
vcap_iter_set(&iter, sw_width, tgt, 0);
sw_cnt = 0;
while (iter.tg->width) {
u32 value = 0;
u32 tg_value = iter.tg->value;
if (mask)
tg_value = (1 << iter.tg->width) - 1;
/* Set position to current typegroup bit */
iter.offset = iter.tg->offset;
vcap_iter_update(&iter);
for (idx = 0; idx < iter.tg->width; idx++) {
/* Decode one typegroup bit */
if (vcap_get_bit(stream, &iter))
value |= 1 << idx;
iter.offset++;
vcap_iter_update(&iter);
}
if (value != tg_value)
return -EINVAL;
iter.tg++; /* next typegroup */
sw_cnt++;
/* Stop checking more typegroups */
if (sw_max && sw_cnt >= sw_max)
break;
}
return 0;
}
/* Find the subword width of the key typegroup that matches the stream data */
static int vcap_find_keystream_typegroup_sw(struct vcap_control *vctrl,
enum vcap_type vt, u32 *stream,
bool mask, int sw_max)
{
const struct vcap_typegroup **tgt;
int sw_idx, res;
tgt = vctrl->vcaps[vt].keyfield_set_typegroups;
/* Try the longest subword match first */
for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) {
if (!tgt[sw_idx])
continue;
res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].sw_width,
tgt[sw_idx], mask, sw_max);
if (res == 0)
return sw_idx;
}
return -EINVAL;
}
/* Verify that the type id in the stream matches the type id of the keyset */
static bool vcap_verify_keystream_keyset(struct vcap_control *vctrl,
enum vcap_type vt,
u32 *keystream,
u32 *mskstream,
enum vcap_keyfield_set keyset)
{
const struct vcap_info *vcap = &vctrl->vcaps[vt];
const struct vcap_field *typefld;
const struct vcap_typegroup *tgt;
const struct vcap_field *fields;
struct vcap_stream_iter iter;
const struct vcap_set *info;
u32 value = 0;
u32 mask = 0;
if (vcap_keyfield_count(vctrl, vt, keyset) == 0)
return false;
info = vcap_keyfieldset(vctrl, vt, keyset);
/* Check that the keyset is valid */
if (!info)
return false;
/* a type_id of value -1 means that there is no type field */
if (info->type_id == (u8)-1)
return true;
/* Get a valid typegroup for the specific keyset */
tgt = vcap_keyfield_typegroup(vctrl, vt, keyset);
if (!tgt)
return false;
fields = vcap_keyfields(vctrl, vt, keyset);
if (!fields)
return false;
typefld = &fields[VCAP_KF_TYPE];
vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset);
vcap_decode_field(mskstream, &iter, typefld->width, (u8 *)&mask);
/* no type info if there are no mask bits */
if (vcap_bitarray_zero(typefld->width, (u8 *)&mask))
return false;
/* Get the value of the type field in the stream and compare to the
* one define in the vcap keyset
*/
vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset);
vcap_decode_field(keystream, &iter, typefld->width, (u8 *)&value);
return (value == info->type_id);
}
/* Verify that the typegroup information, subword count, keyset and type id
* are in sync and correct, return the keyset
*/
static enum
vcap_keyfield_set vcap_find_keystream_keyset(struct vcap_control *vctrl,
enum vcap_type vt,
u32 *keystream,
u32 *mskstream,
bool mask, int sw_max)
{
const struct vcap_set *keyfield_set;
int sw_count, idx;
bool res;
sw_count = vcap_find_keystream_typegroup_sw(vctrl, vt, keystream, mask,
sw_max);
if (sw_count < 0)
return sw_count;
keyfield_set = vctrl->vcaps[vt].keyfield_set;
for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) {
if (keyfield_set[idx].sw_per_item != sw_count)
continue;
res = vcap_verify_keystream_keyset(vctrl, vt, keystream,
mskstream, idx);
if (res)
return idx;
}
return -EINVAL;
}
/* Read key data from a VCAP address and discover if there is a rule keyset
* here
*/
static int vcap_addr_keyset(struct vcap_control *vctrl,
struct net_device *ndev,
struct vcap_admin *admin,
int addr)
{
enum vcap_type vt = admin->vtype;
int keyset_sw_regs, idx;
u32 key = 0, mask = 0;
/* Read the cache at the specified address */
keyset_sw_regs = DIV_ROUND_UP(vctrl->vcaps[vt].sw_width, 32);
vctrl->ops->update(ndev, admin, VCAP_CMD_READ, VCAP_SEL_ALL, addr);
vctrl->ops->cache_read(ndev, admin, VCAP_SEL_ENTRY, 0,
keyset_sw_regs);
/* Skip uninitialized key/mask entries */
for (idx = 0; idx < keyset_sw_regs; ++idx) {
key |= ~admin->cache.keystream[idx];
mask |= admin->cache.maskstream[idx];
}
if (key == 0 && mask == 0)
return -EINVAL;
/* Decode and locate the keyset */
return vcap_find_keystream_keyset(vctrl, vt, admin->cache.keystream,
admin->cache.maskstream, false, 0);
}
static int vcap_show_admin_raw(struct vcap_control *vctrl,
struct vcap_admin *admin,
struct vcap_output_print *out)
{
enum vcap_type vt = admin->vtype;
struct vcap_rule_internal *ri;
const struct vcap_set *info;
int keyset;
int addr;
int ret;
if (list_empty(&admin->rules))
return 0;
ret = vcap_api_check(vctrl);
if (ret)
return ret;
ri = list_first_entry(&admin->rules, struct vcap_rule_internal, list);
/* Go from higher to lower addresses searching for a keyset */
for (addr = admin->last_valid_addr; addr >= admin->first_valid_addr;
--addr) {
keyset = vcap_addr_keyset(vctrl, ri->ndev, admin, addr);
if (keyset < 0)
continue;
info = vcap_keyfieldset(vctrl, vt, keyset);
if (!info)
continue;
if (addr % info->sw_per_item)
pr_info("addr: %d X%d error rule, keyset: %s\n",
addr,
info->sw_per_item,
vcap_keyset_name(vctrl, keyset));
else
out->prf(out->dst, " addr: %d, X%d rule, keyset: %s\n",
addr,
info->sw_per_item,
vcap_keyset_name(vctrl, keyset));
}
return 0;
}
/* Show the port configuration and status */
static int vcap_port_debugfs_show(struct seq_file *m, void *unused)
{
......@@ -61,8 +316,13 @@ EXPORT_SYMBOL_GPL(vcap_port_debugfs);
/* Show the raw VCAP instance data (rules with address info) */
static int vcap_raw_debugfs_show(struct seq_file *m, void *unused)
{
/* The output will be added later */
return 0;
struct vcap_admin_debugfs_info *info = m->private;
struct vcap_output_print out = {
.prf = (void *)seq_printf,
.dst = m,
};
return vcap_show_admin_raw(info->vctrl, info->admin, &out);
}
DEFINE_SHOW_ATTRIBUTE(vcap_raw_debugfs);
......
drivers/net/ethernet/microchip/vcap/vcap_api_private.h 0 → 100644
View file @ d4134d41
/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (C) 2022 Microchip Technology Inc. and its subsidiaries.
* Microchip VCAP API
*/
#ifndef __VCAP_API_PRIVATE__
#define __VCAP_API_PRIVATE__
#include <linux/types.h>
#include "vcap_api.h"
#include "vcap_api_client.h"
#define to_intrule(rule) container_of((rule), struct vcap_rule_internal, data)
/* Private VCAP API rule data */
struct vcap_rule_internal {
struct vcap_rule data; /* provided by the client */
struct list_head list; /* the vcap admin list of rules */
struct vcap_admin *admin; /* vcap hw instance */
struct net_device *ndev; /* the interface that the rule applies to */
struct vcap_control *vctrl; /* the client control */
u32 sort_key; /* defines the position in the VCAP */
int keyset_sw; /* subwords in a keyset */
int actionset_sw; /* subwords in an actionset */
int keyset_sw_regs; /* registers in a subword in an keyset */
int actionset_sw_regs; /* registers in a subword in an actionset */
int size; /* the size of the rule: max(entry, action) */
u32 addr; /* address in the VCAP at insertion */
u32 counter_id; /* counter id (if a dedicated counter is available) */
struct vcap_counter counter; /* last read counter value */
};
/* Bit iterator for the VCAP cache streams */
struct vcap_stream_iter {
u32 offset; /* bit offset from the stream start */
u32 sw_width; /* subword width in bits */
u32 regs_per_sw; /* registers per subword */
u32 reg_idx; /* current register index */
u32 reg_bitpos; /* bit offset in current register */
const struct vcap_typegroup *tg; /* current typegroup */
};
/* Check that the control has a valid set of callbacks */
int vcap_api_check(struct vcap_control *ctrl);
/* Iterator functionality */
void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width,
const struct vcap_typegroup *tg, u32 offset);
void vcap_iter_next(struct vcap_stream_iter *itr);
void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width,
const struct vcap_typegroup *tg, u32 offset);
void vcap_iter_update(struct vcap_stream_iter *itr);
/* Keyset and keyfield functionality */
/* Return the keyset information for the keyset */
const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl,
enum vcap_type vt,
enum vcap_keyfield_set keyset);
/* Return the number of keyfields in the keyset */
int vcap_keyfield_count(struct vcap_control *vctrl,
enum vcap_type vt, enum vcap_keyfield_set keyset);
/* Return the typegroup table for the matching keyset (using subword size) */
const struct vcap_typegroup *
vcap_keyfield_typegroup(struct vcap_control *vctrl,
enum vcap_type vt, enum vcap_keyfield_set keyset);
/* Return the list of keyfields for the keyset */
const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl,
enum vcap_type vt,
enum vcap_keyfield_set keyset);
#endif /* __VCAP_API_PRIVATE__ */
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