// SPDX-License-Identifier: GPL-2.0-only
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2019 Solarflare Communications Inc.
* Copyright 2020-2022 Xilinx Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#include <linux/rhashtable.h>
#include "ef100_nic.h"
#include "mae.h"
#include "mcdi.h"
#include "mcdi_pcol.h"
#include "mcdi_pcol_mae.h"
#include "tc_encap_actions.h"
#include "tc_conntrack.h"
int efx_mae_allocate_mport(struct efx_nic *efx, u32 *id, u32 *label)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MPORT_ALLOC_ALIAS_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_ALLOC_ALIAS_IN_LEN);
size_t outlen;
int rc;
if (WARN_ON_ONCE(!id))
return -EINVAL;
if (WARN_ON_ONCE(!label))
return -EINVAL;
MCDI_SET_DWORD(inbuf, MAE_MPORT_ALLOC_ALIAS_IN_TYPE,
MC_CMD_MAE_MPORT_ALLOC_ALIAS_IN_MPORT_TYPE_ALIAS);
MCDI_SET_DWORD(inbuf, MAE_MPORT_ALLOC_ALIAS_IN_DELIVER_MPORT,
MAE_MPORT_SELECTOR_ASSIGNED);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_ALLOC, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
*id = MCDI_DWORD(outbuf, MAE_MPORT_ALLOC_ALIAS_OUT_MPORT_ID);
*label = MCDI_DWORD(outbuf, MAE_MPORT_ALLOC_ALIAS_OUT_LABEL);
return 0;
}
int efx_mae_free_mport(struct efx_nic *efx, u32 id)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_FREE_IN_LEN);
BUILD_BUG_ON(MC_CMD_MAE_MPORT_FREE_OUT_LEN);
MCDI_SET_DWORD(inbuf, MAE_MPORT_FREE_IN_MPORT_ID, id);
return efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_FREE, inbuf, sizeof(inbuf),
NULL, 0, NULL);
}
void efx_mae_mport_wire(struct efx_nic *efx, u32 *out)
{
efx_dword_t mport;
EFX_POPULATE_DWORD_2(mport,
MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_PPORT,
MAE_MPORT_SELECTOR_PPORT_ID, efx->port_num);
*out = EFX_DWORD_VAL(mport);
}
void efx_mae_mport_uplink(struct efx_nic *efx __always_unused, u32 *out)
{
efx_dword_t mport;
EFX_POPULATE_DWORD_3(mport,
MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_FUNC,
MAE_MPORT_SELECTOR_FUNC_PF_ID, MAE_MPORT_SELECTOR_FUNC_PF_ID_CALLER,
MAE_MPORT_SELECTOR_FUNC_VF_ID, MAE_MPORT_SELECTOR_FUNC_VF_ID_NULL);
*out = EFX_DWORD_VAL(mport);
}
void efx_mae_mport_vf(struct efx_nic *efx __always_unused, u32 vf_id, u32 *out)
{
efx_dword_t mport;
EFX_POPULATE_DWORD_3(mport,
MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_FUNC,
MAE_MPORT_SELECTOR_FUNC_PF_ID, MAE_MPORT_SELECTOR_FUNC_PF_ID_CALLER,
MAE_MPORT_SELECTOR_FUNC_VF_ID, vf_id);
*out = EFX_DWORD_VAL(mport);
}
/* Constructs an mport selector from an mport ID, because they're not the same */
void efx_mae_mport_mport(struct efx_nic *efx __always_unused, u32 mport_id, u32 *out)
{
efx_dword_t mport;
EFX_POPULATE_DWORD_2(mport,
MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_MPORT_ID,
MAE_MPORT_SELECTOR_MPORT_ID, mport_id);
*out = EFX_DWORD_VAL(mport);
}
/* id is really only 24 bits wide */
int efx_mae_fw_lookup_mport(struct efx_nic *efx, u32 selector, u32 *id)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MPORT_LOOKUP_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_LOOKUP_IN_LEN);
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_MPORT_LOOKUP_IN_MPORT_SELECTOR, selector);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_LOOKUP, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
*id = MCDI_DWORD(outbuf, MAE_MPORT_LOOKUP_OUT_MPORT_ID);
return 0;
}
int efx_mae_start_counters(struct efx_nic *efx, struct efx_rx_queue *rx_queue)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_START_V2_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTERS_STREAM_START_OUT_LEN);
u32 out_flags;
size_t outlen;
int rc;
MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_QID,
efx_rx_queue_index(rx_queue));
MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_PACKET_SIZE,
efx->net_dev->mtu);
MCDI_SET_DWORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_COUNTER_TYPES_MASK,
BIT(MAE_COUNTER_TYPE_AR) | BIT(MAE_COUNTER_TYPE_CT) |
BIT(MAE_COUNTER_TYPE_OR));
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_START,
inbuf, sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
out_flags = MCDI_DWORD(outbuf, MAE_COUNTERS_STREAM_START_OUT_FLAGS);
if (out_flags & BIT(MC_CMD_MAE_COUNTERS_STREAM_START_OUT_USES_CREDITS_OFST)) {
netif_dbg(efx, drv, efx->net_dev,
"MAE counter stream uses credits\n");
rx_queue->grant_credits = true;
out_flags &= ~BIT(MC_CMD_MAE_COUNTERS_STREAM_START_OUT_USES_CREDITS_OFST);
}
if (out_flags) {
netif_err(efx, drv, efx->net_dev,
"MAE counter stream start: unrecognised flags %x\n",
out_flags);
goto out_stop;
}
return 0;
out_stop:
efx_mae_stop_counters(efx, rx_queue);
return -EOPNOTSUPP;
}
static bool efx_mae_counters_flushed(u32 *flush_gen, u32 *seen_gen)
{
int i;
for (i = 0; i < EFX_TC_COUNTER_TYPE_MAX; i++)
if ((s32)(flush_gen[i] - seen_gen[i]) > 0)
return false;
return true;
}
int efx_mae_stop_counters(struct efx_nic *efx, struct efx_rx_queue *rx_queue)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTERS_STREAM_STOP_V2_OUT_LENMAX);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_STOP_IN_LEN);
size_t outlen;
int rc, i;
MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_STOP_IN_QID,
efx_rx_queue_index(rx_queue));
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_STOP,
inbuf, sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
netif_dbg(efx, drv, efx->net_dev, "Draining counters:\n");
/* Only process received generation counts */
for (i = 0; (i < (outlen / 4)) && (i < EFX_TC_COUNTER_TYPE_MAX); i++) {
efx->tc->flush_gen[i] = MCDI_ARRAY_DWORD(outbuf,
MAE_COUNTERS_STREAM_STOP_V2_OUT_GENERATION_COUNT,
i);
netif_dbg(efx, drv, efx->net_dev,
"\ttype %u, awaiting gen %u\n", i,
efx->tc->flush_gen[i]);
}
efx->tc->flush_counters = true;
/* Drain can take up to 2 seconds owing to FWRIVERHD-2884; whatever
* timeout we use, that delay is added to unload on nonresponsive
* hardware, so 2500ms seems like a reasonable compromise.
*/
if (!wait_event_timeout(efx->tc->flush_wq,
efx_mae_counters_flushed(efx->tc->flush_gen,
efx->tc->seen_gen),
msecs_to_jiffies(2500)))
netif_warn(efx, drv, efx->net_dev,
"Failed to drain counters RXQ, FW may be unhappy\n");
efx->tc->flush_counters = false;
return rc;
}
void efx_mae_counters_grant_credits(struct work_struct *work)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS_IN_LEN);
struct efx_rx_queue *rx_queue = container_of(work, struct efx_rx_queue,
grant_work);
struct efx_nic *efx = rx_queue->efx;
unsigned int credits;
BUILD_BUG_ON(MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS_OUT_LEN);
credits = READ_ONCE(rx_queue->notified_count) - rx_queue->granted_count;
MCDI_SET_DWORD(inbuf, MAE_COUNTERS_STREAM_GIVE_CREDITS_IN_NUM_CREDITS,
credits);
if (!efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS,
inbuf, sizeof(inbuf), NULL, 0, NULL))
rx_queue->granted_count += credits;
}
static int efx_mae_table_get_desc(struct efx_nic *efx,
struct efx_tc_table_desc *desc,
u32 table_id)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(16));
MCDI_DECLARE_BUF(inbuf, MC_CMD_TABLE_DESCRIPTOR_IN_LEN);
unsigned int offset = 0, i;
size_t outlen;
int rc;
memset(desc, 0, sizeof(*desc));
MCDI_SET_DWORD(inbuf, TABLE_DESCRIPTOR_IN_TABLE_ID, table_id);
more:
MCDI_SET_DWORD(inbuf, TABLE_DESCRIPTOR_IN_FIRST_FIELDS_INDEX, offset);
rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_DESCRIPTOR, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
goto fail;
if (outlen < MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(1)) {
rc = -EIO;
goto fail;
}
if (!offset) { /* first iteration: get metadata */
desc->type = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_TYPE);
desc->key_width = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_KEY_WIDTH);
desc->resp_width = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_RESP_WIDTH);
desc->n_keys = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_KEY_FIELDS);
desc->n_resps = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_RESP_FIELDS);
desc->n_prios = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_PRIORITIES);
desc->flags = MCDI_BYTE(outbuf, TABLE_DESCRIPTOR_OUT_FLAGS);
rc = -EOPNOTSUPP;
if (desc->flags)
goto fail;
desc->scheme = MCDI_BYTE(outbuf, TABLE_DESCRIPTOR_OUT_SCHEME);
if (desc->scheme)
goto fail;
rc = -ENOMEM;
desc->keys = kcalloc(desc->n_keys,
sizeof(struct efx_tc_table_field_fmt),
GFP_KERNEL);
if (!desc->keys)
goto fail;
desc->resps = kcalloc(desc->n_resps,
sizeof(struct efx_tc_table_field_fmt),
GFP_KERNEL);
if (!desc->resps)
goto fail;
}
/* FW could have returned more than the 16 field_descrs we
* made room for in our outbuf
*/
outlen = min(outlen, sizeof(outbuf));
for (i = 0; i + offset < desc->n_keys + desc->n_resps; i++) {
struct efx_tc_table_field_fmt *field;
MCDI_DECLARE_STRUCT_PTR(fdesc);
if (outlen < MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(i + 1)) {
offset += i;
goto more;
}
if (i + offset < desc->n_keys)
field = desc->keys + i + offset;
else
field = desc->resps + (i + offset - desc->n_keys);
fdesc = MCDI_ARRAY_STRUCT_PTR(outbuf,
TABLE_DESCRIPTOR_OUT_FIELDS, i);
field->field_id = MCDI_STRUCT_WORD(fdesc,
TABLE_FIELD_DESCR_FIELD_ID);
field->lbn = MCDI_STRUCT_WORD(fdesc, TABLE_FIELD_DESCR_LBN);
field->width = MCDI_STRUCT_WORD(fdesc, TABLE_FIELD_DESCR_WIDTH);
field->masking = MCDI_STRUCT_BYTE(fdesc, TABLE_FIELD_DESCR_MASK_TYPE);
field->scheme = MCDI_STRUCT_BYTE(fdesc, TABLE_FIELD_DESCR_SCHEME);
}
return 0;
fail:
kfree(desc->keys);
kfree(desc->resps);
return rc;
}
static int efx_mae_table_hook_find(u16 n_fields,
struct efx_tc_table_field_fmt *fields,
u16 field_id)
{
unsigned int i;
for (i = 0; i < n_fields; i++) {
if (fields[i].field_id == field_id)
return i;
}
return -EPROTO;
}
#define TABLE_FIND_KEY(_desc, _id) \
efx_mae_table_hook_find((_desc)->n_keys, (_desc)->keys, _id)
#define TABLE_FIND_RESP(_desc, _id) \
efx_mae_table_hook_find((_desc)->n_resps, (_desc)->resps, _id)
#define TABLE_HOOK_KEY(_meta, _name, _mcdi_name) ({ \
int _rc = TABLE_FIND_KEY(&_meta->desc, TABLE_FIELD_ID_##_mcdi_name); \
\
if (_rc > U8_MAX) \
_rc = -EOPNOTSUPP; \
if (_rc >= 0) { \
_meta->keys._name##_idx = _rc; \
_rc = 0; \
} \
_rc; \
})
#define TABLE_HOOK_RESP(_meta, _name, _mcdi_name) ({ \
int _rc = TABLE_FIND_RESP(&_meta->desc, TABLE_FIELD_ID_##_mcdi_name); \
\
if (_rc > U8_MAX) \
_rc = -EOPNOTSUPP; \
if (_rc >= 0) { \
_meta->resps._name##_idx = _rc; \
_rc = 0; \
} \
_rc; \
})
static int efx_mae_table_hook_ct(struct efx_nic *efx,
struct efx_tc_table_ct *meta_ct)
{
int rc;
rc = TABLE_HOOK_KEY(meta_ct, eth_proto, ETHER_TYPE);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, ip_proto, IP_PROTO);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, src_ip, SRC_IP);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, dst_ip, DST_IP);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, l4_sport, SRC_PORT);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, l4_dport, DST_PORT);
if (rc)
return rc;
rc = TABLE_HOOK_KEY(meta_ct, zone, DOMAIN);
if (rc)
return rc;
rc = TABLE_HOOK_RESP(meta_ct, dnat, NAT_DIR);
if (rc)
return rc;
rc = TABLE_HOOK_RESP(meta_ct, nat_ip, NAT_IP);
if (rc)
return rc;
rc = TABLE_HOOK_RESP(meta_ct, l4_natport, NAT_PORT);
if (rc)
return rc;
rc = TABLE_HOOK_RESP(meta_ct, mark, CT_MARK);
if (rc)
return rc;
rc = TABLE_HOOK_RESP(meta_ct, counter_id, COUNTER_ID);
if (rc)
return rc;
meta_ct->hooked = true;
return 0;
}
static void efx_mae_table_free_desc(struct efx_tc_table_desc *desc)
{
kfree(desc->keys);
kfree(desc->resps);
memset(desc, 0, sizeof(*desc));
}
static bool efx_mae_check_table_exists(struct efx_nic *efx, u32 tbl_req)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_TABLE_LIST_OUT_LEN(16));
MCDI_DECLARE_BUF(inbuf, MC_CMD_TABLE_LIST_IN_LEN);
u32 tbl_id, tbl_total, tbl_cnt, pos = 0;
size_t outlen, msg_max;
bool ct_tbl = false;
int rc, idx;
msg_max = sizeof(outbuf);
efx->tc->meta_ct.hooked = false;
more:
memset(outbuf, 0, sizeof(*outbuf));
MCDI_SET_DWORD(inbuf, TABLE_LIST_IN_FIRST_TABLE_ID_INDEX, pos);
rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_LIST, inbuf, sizeof(inbuf), outbuf,
msg_max, &outlen);
if (rc)
return false;
if (outlen < MC_CMD_TABLE_LIST_OUT_LEN(1))
return false;
tbl_total = MCDI_DWORD(outbuf, TABLE_LIST_OUT_N_TABLES);
tbl_cnt = MC_CMD_TABLE_LIST_OUT_TABLE_ID_NUM(min(outlen, msg_max));
for (idx = 0; idx < tbl_cnt; idx++) {
tbl_id = MCDI_ARRAY_DWORD(outbuf, TABLE_LIST_OUT_TABLE_ID, idx);
if (tbl_id == tbl_req) {
ct_tbl = true;
break;
}
}
pos += tbl_cnt;
if (!ct_tbl && pos < tbl_total)
goto more;
return ct_tbl;
}
int efx_mae_get_tables(struct efx_nic *efx)
{
int rc;
efx->tc->meta_ct.hooked = false;
if (efx_mae_check_table_exists(efx, TABLE_ID_CONNTRACK_TABLE)) {
rc = efx_mae_table_get_desc(efx, &efx->tc->meta_ct.desc,
TABLE_ID_CONNTRACK_TABLE);
if (rc) {
pci_info(efx->pci_dev,
"FW does not support conntrack desc rc %d\n",
rc);
return 0;
}
rc = efx_mae_table_hook_ct(efx, &efx->tc->meta_ct);
if (rc) {
pci_info(efx->pci_dev,
"FW does not support conntrack hook rc %d\n",
rc);
return 0;
}
} else {
pci_info(efx->pci_dev,
"FW does not support conntrack table\n");
}
return 0;
}
void efx_mae_free_tables(struct efx_nic *efx)
{
efx_mae_table_free_desc(&efx->tc->meta_ct.desc);
efx->tc->meta_ct.hooked = false;
}
static int efx_mae_get_basic_caps(struct efx_nic *efx, struct mae_caps *caps)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_GET_CAPS_OUT_LEN);
size_t outlen;
int rc;
BUILD_BUG_ON(MC_CMD_MAE_GET_CAPS_IN_LEN);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_GET_CAPS, NULL, 0, outbuf,
sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
caps->match_field_count = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_MATCH_FIELD_COUNT);
caps->encap_types = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_ENCAP_TYPES_SUPPORTED);
caps->action_prios = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_ACTION_PRIOS);
return 0;
}
static int efx_mae_get_rule_fields(struct efx_nic *efx, u32 cmd,
u8 *field_support)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(MAE_NUM_FIELDS));
MCDI_DECLARE_STRUCT_PTR(caps);
unsigned int count;
size_t outlen;
int rc, i;
/* AR and OR caps MCDIs have identical layout, so we are using the
* same code for both.
*/
BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(MAE_NUM_FIELDS) <
MC_CMD_MAE_GET_OR_CAPS_OUT_LEN(MAE_NUM_FIELDS));
BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_IN_LEN);
BUILD_BUG_ON(MC_CMD_MAE_GET_OR_CAPS_IN_LEN);
rc = efx_mcdi_rpc(efx, cmd, NULL, 0, outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_COUNT_OFST !=
MC_CMD_MAE_GET_OR_CAPS_OUT_COUNT_OFST);
count = MCDI_DWORD(outbuf, MAE_GET_AR_CAPS_OUT_COUNT);
memset(field_support, MAE_FIELD_UNSUPPORTED, MAE_NUM_FIELDS);
BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_FIELD_FLAGS_OFST !=
MC_CMD_MAE_GET_OR_CAPS_OUT_FIELD_FLAGS_OFST);
caps = _MCDI_DWORD(outbuf, MAE_GET_AR_CAPS_OUT_FIELD_FLAGS);
/* We're only interested in the support status enum, not any other
* flags, so just extract that from each entry.
*/
for (i = 0; i < count; i++)
if (i * sizeof(*outbuf) + MC_CMD_MAE_GET_AR_CAPS_OUT_FIELD_FLAGS_OFST < outlen)
field_support[i] = EFX_DWORD_FIELD(caps[i], MAE_FIELD_FLAGS_SUPPORT_STATUS);
return 0;
}
int efx_mae_get_caps(struct efx_nic *efx, struct mae_caps *caps)
{
int rc;
rc = efx_mae_get_basic_caps(efx, caps);
if (rc)
return rc;
rc = efx_mae_get_rule_fields(efx, MC_CMD_MAE_GET_AR_CAPS,
caps->action_rule_fields);
if (rc)
return rc;
return efx_mae_get_rule_fields(efx, MC_CMD_MAE_GET_OR_CAPS,
caps->outer_rule_fields);
}
/* Bit twiddling:
* Prefix: 1...110...0
* ~: 0...001...1
* + 1: 0...010...0 is power of two
* so (~x) & ((~x) + 1) == 0. Converse holds also.
*/
#define is_prefix_byte(_x) !(((_x) ^ 0xff) & (((_x) ^ 0xff) + 1))
enum mask_type { MASK_ONES, MASK_ZEROES, MASK_PREFIX, MASK_OTHER };
static const char *mask_type_name(enum mask_type typ)
{
switch (typ) {
case MASK_ONES:
return "all-1s";
case MASK_ZEROES:
return "all-0s";
case MASK_PREFIX:
return "prefix";
case MASK_OTHER:
return "arbitrary";
default: /* can't happen */
return "unknown";
}
}
/* Checks a (big-endian) bytestring is a bit prefix */
static enum mask_type classify_mask(const u8 *mask, size_t len)
{
bool zeroes = true; /* All bits seen so far are zeroes */
bool ones = true; /* All bits seen so far are ones */
bool prefix = true; /* Valid prefix so far */
size_t i;
for (i = 0; i < len; i++) {
if (ones) {
if (!is_prefix_byte(mask[i]))
prefix = false;
} else if (mask[i]) {
prefix = false;
}
if (mask[i] != 0xff)
ones = false;
if (mask[i])
zeroes = false;
}
if (ones)
return MASK_ONES;
if (zeroes)
return MASK_ZEROES;
if (prefix)
return MASK_PREFIX;
return MASK_OTHER;
}
static int efx_mae_match_check_cap_typ(u8 support, enum mask_type typ)
{
switch (support) {
case MAE_FIELD_UNSUPPORTED:
case MAE_FIELD_SUPPORTED_MATCH_NEVER:
if (typ == MASK_ZEROES)
return 0;
return -EOPNOTSUPP;
case MAE_FIELD_SUPPORTED_MATCH_OPTIONAL:
if (typ == MASK_ZEROES)
return 0;
fallthrough;
case MAE_FIELD_SUPPORTED_MATCH_ALWAYS:
if (typ == MASK_ONES)
return 0;
return -EINVAL;
case MAE_FIELD_SUPPORTED_MATCH_PREFIX:
if (typ == MASK_OTHER)
return -EOPNOTSUPP;
return 0;
case MAE_FIELD_SUPPORTED_MATCH_MASK:
return 0;
default:
return -EIO;
}
}
/* Validate field mask against hardware capabilities. Captures caller's 'rc' */
#define CHECK(_mcdi, _field) ({ \
enum mask_type typ = classify_mask((const u8 *)&mask->_field, \
sizeof(mask->_field)); \
\
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
typ); \
if (rc) \
NL_SET_ERR_MSG_FMT_MOD(extack, \
"No support for %s mask in field %s", \
mask_type_name(typ), #_field); \
rc; \
})
/* Booleans need special handling */
#define CHECK_BIT(_mcdi, _field) ({ \
enum mask_type typ = mask->_field ? MASK_ONES : MASK_ZEROES; \
\
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
typ); \
if (rc) \
NL_SET_ERR_MSG_FMT_MOD(extack, \
"No support for %s mask in field %s", \
mask_type_name(typ), #_field); \
rc; \
})
int efx_mae_match_check_caps(struct efx_nic *efx,
const struct efx_tc_match_fields *mask,
struct netlink_ext_ack *extack)
{
const u8 *supported_fields = efx->tc->caps->action_rule_fields;
__be32 ingress_port = cpu_to_be32(mask->ingress_port);
enum mask_type ingress_port_mask_type;
int rc;
/* Check for _PREFIX assumes big-endian, so we need to convert */
ingress_port_mask_type = classify_mask((const u8 *)&ingress_port,
sizeof(ingress_port));
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_INGRESS_PORT],
ingress_port_mask_type);
if (rc) {
NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field ingress_port",
mask_type_name(ingress_port_mask_type));
return rc;
}
if (CHECK(ETHER_TYPE, eth_proto) ||
CHECK(VLAN0_TCI, vlan_tci[0]) ||
CHECK(VLAN0_PROTO, vlan_proto[0]) ||
CHECK(VLAN1_TCI, vlan_tci[1]) ||
CHECK(VLAN1_PROTO, vlan_proto[1]) ||
CHECK(ETH_SADDR, eth_saddr) ||
CHECK(ETH_DADDR, eth_daddr) ||
CHECK(IP_PROTO, ip_proto) ||
CHECK(IP_TOS, ip_tos) ||
CHECK(IP_TTL, ip_ttl) ||
CHECK(SRC_IP4, src_ip) ||
CHECK(DST_IP4, dst_ip) ||
#ifdef CONFIG_IPV6
CHECK(SRC_IP6, src_ip6) ||
CHECK(DST_IP6, dst_ip6) ||
#endif
CHECK(L4_SPORT, l4_sport) ||
CHECK(L4_DPORT, l4_dport) ||
CHECK(TCP_FLAGS, tcp_flags) ||
CHECK_BIT(TCP_SYN_FIN_RST, tcp_syn_fin_rst) ||
CHECK_BIT(IS_IP_FRAG, ip_frag) ||
CHECK_BIT(IP_FIRST_FRAG, ip_firstfrag) ||
CHECK_BIT(DO_CT, ct_state_trk) ||
CHECK_BIT(CT_HIT, ct_state_est) ||
CHECK(CT_MARK, ct_mark) ||
CHECK(CT_DOMAIN, ct_zone) ||
CHECK(RECIRC_ID, recirc_id))
return rc;
/* Matches on outer fields are done in a separate hardware table,
* the Outer Rule table. Thus the Action Rule merely does an
* exact match on Outer Rule ID if any outer field matches are
* present. The exception is the VNI/VSID (enc_keyid), which is
* available to the Action Rule match iff the Outer Rule matched
* (and thus identified the encap protocol to use to extract it).
*/
if (efx_tc_match_is_encap(mask)) {
rc = efx_mae_match_check_cap_typ(
supported_fields[MAE_FIELD_OUTER_RULE_ID],
MASK_ONES);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "No support for encap rule ID matches");
return rc;
}
if (CHECK(ENC_VNET_ID, enc_keyid))
return rc;
} else if (mask->enc_keyid) {
NL_SET_ERR_MSG_MOD(extack, "Match on enc_keyid requires other encap fields");
return -EINVAL;
}
return 0;
}
/* Checks for match fields not supported in LHS Outer Rules */
#define UNSUPPORTED(_field) ({ \
enum mask_type typ = classify_mask((const u8 *)&mask->_field, \
sizeof(mask->_field)); \
\
if (typ != MASK_ZEROES) { \
NL_SET_ERR_MSG_MOD(extack, "Unsupported match field " #_field);\
rc = -EOPNOTSUPP; \
} \
rc; \
})
#define UNSUPPORTED_BIT(_field) ({ \
if (mask->_field) { \
NL_SET_ERR_MSG_MOD(extack, "Unsupported match field " #_field);\
rc = -EOPNOTSUPP; \
} \
rc; \
})
/* LHS rules are (normally) inserted in the Outer Rule table, which means
* they use ENC_ fields in hardware to match regular (not enc_) fields from
* &struct efx_tc_match_fields.
*/
int efx_mae_match_check_caps_lhs(struct efx_nic *efx,
const struct efx_tc_match_fields *mask,
struct netlink_ext_ack *extack)
{
const u8 *supported_fields = efx->tc->caps->outer_rule_fields;
__be32 ingress_port = cpu_to_be32(mask->ingress_port);
enum mask_type ingress_port_mask_type;
int rc;
/* Check for _PREFIX assumes big-endian, so we need to convert */
ingress_port_mask_type = classify_mask((const u8 *)&ingress_port,
sizeof(ingress_port));
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_INGRESS_PORT],
ingress_port_mask_type);
if (rc) {
NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s\n",
mask_type_name(ingress_port_mask_type),
"ingress_port");
return rc;
}
if (CHECK(ENC_ETHER_TYPE, eth_proto) ||
CHECK(ENC_VLAN0_TCI, vlan_tci[0]) ||
CHECK(ENC_VLAN0_PROTO, vlan_proto[0]) ||
CHECK(ENC_VLAN1_TCI, vlan_tci[1]) ||
CHECK(ENC_VLAN1_PROTO, vlan_proto[1]) ||
CHECK(ENC_ETH_SADDR, eth_saddr) ||
CHECK(ENC_ETH_DADDR, eth_daddr) ||
CHECK(ENC_IP_PROTO, ip_proto) ||
CHECK(ENC_IP_TOS, ip_tos) ||
CHECK(ENC_IP_TTL, ip_ttl) ||
CHECK_BIT(ENC_IP_FRAG, ip_frag) ||
UNSUPPORTED_BIT(ip_firstfrag) ||
CHECK(ENC_SRC_IP4, src_ip) ||
CHECK(ENC_DST_IP4, dst_ip) ||
#ifdef CONFIG_IPV6
CHECK(ENC_SRC_IP6, src_ip6) ||
CHECK(ENC_DST_IP6, dst_ip6) ||
#endif
CHECK(ENC_L4_SPORT, l4_sport) ||
CHECK(ENC_L4_DPORT, l4_dport) ||
UNSUPPORTED(tcp_flags) ||
CHECK_BIT(TCP_SYN_FIN_RST, tcp_syn_fin_rst))
return rc;
if (efx_tc_match_is_encap(mask)) {
/* can't happen; disallowed for local rules, translated
* for foreign rules.
*/
NL_SET_ERR_MSG_MOD(extack, "Unexpected encap match in LHS rule");
return -EOPNOTSUPP;
}
if (UNSUPPORTED(enc_keyid) ||
/* Can't filter on conntrack in LHS rules */
UNSUPPORTED_BIT(ct_state_trk) ||
UNSUPPORTED_BIT(ct_state_est) ||
UNSUPPORTED(ct_mark) ||
UNSUPPORTED(recirc_id))
return rc;
return 0;
}
#undef UNSUPPORTED
#undef CHECK_BIT
#undef CHECK
#define CHECK(_mcdi) ({ \
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
MASK_ONES); \
if (rc) \
NL_SET_ERR_MSG_FMT_MOD(extack, \
"No support for field %s", #_mcdi); \
rc; \
})
/* Checks that the fields needed for encap-rule matches are supported by the
* MAE. All the fields are exact-match, except possibly ENC_IP_TOS.
*/
int efx_mae_check_encap_match_caps(struct efx_nic *efx, bool ipv6,
u8 ip_tos_mask, __be16 udp_sport_mask,
struct netlink_ext_ack *extack)
{
u8 *supported_fields = efx->tc->caps->outer_rule_fields;
enum mask_type typ;
int rc;
if (CHECK(ENC_ETHER_TYPE))
return rc;
if (ipv6) {
if (CHECK(ENC_SRC_IP6) ||
CHECK(ENC_DST_IP6))
return rc;
} else {
if (CHECK(ENC_SRC_IP4) ||
CHECK(ENC_DST_IP4))
return rc;
}
if (CHECK(ENC_L4_DPORT) ||
CHECK(ENC_IP_PROTO))
return rc;
typ = classify_mask((const u8 *)&udp_sport_mask, sizeof(udp_sport_mask));
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ENC_L4_SPORT],
typ);
if (rc) {
NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s",
mask_type_name(typ), "enc_src_port");
return rc;
}
typ = classify_mask(&ip_tos_mask, sizeof(ip_tos_mask));
rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ENC_IP_TOS],
typ);
if (rc) {
NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s",
mask_type_name(typ), "enc_ip_tos");
return rc;
}
return 0;
}
#undef CHECK
int efx_mae_check_encap_type_supported(struct efx_nic *efx, enum efx_encap_type typ)
{
unsigned int bit;
switch (typ & EFX_ENCAP_TYPES_MASK) {
case EFX_ENCAP_TYPE_VXLAN:
bit = MC_CMD_MAE_GET_CAPS_OUT_ENCAP_TYPE_VXLAN_LBN;
break;
case EFX_ENCAP_TYPE_GENEVE:
bit = MC_CMD_MAE_GET_CAPS_OUT_ENCAP_TYPE_GENEVE_LBN;
break;
default:
return -EOPNOTSUPP;
}
if (efx->tc->caps->encap_types & BIT(bit))
return 0;
return -EOPNOTSUPP;
}
int efx_mae_allocate_counter(struct efx_nic *efx, struct efx_tc_counter *cnt)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTER_ALLOC_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTER_ALLOC_V2_IN_LEN);
size_t outlen;
int rc;
if (!cnt)
return -EINVAL;
MCDI_SET_DWORD(inbuf, MAE_COUNTER_ALLOC_V2_IN_REQUESTED_COUNT, 1);
MCDI_SET_DWORD(inbuf, MAE_COUNTER_ALLOC_V2_IN_COUNTER_TYPE, cnt->type);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTER_ALLOC, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
/* pcol says this can't happen, since count is 1 */
if (outlen < sizeof(outbuf))
return -EIO;
cnt->fw_id = MCDI_DWORD(outbuf, MAE_COUNTER_ALLOC_OUT_COUNTER_ID);
cnt->gen = MCDI_DWORD(outbuf, MAE_COUNTER_ALLOC_OUT_GENERATION_COUNT);
return 0;
}
int efx_mae_free_counter(struct efx_nic *efx, struct efx_tc_counter *cnt)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTER_FREE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTER_FREE_V2_IN_LEN);
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_COUNTER_ID_COUNT, 1);
MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_FREE_COUNTER_ID, cnt->fw_id);
MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_COUNTER_TYPE, cnt->type);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTER_FREE, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
/* pcol says this can't happen, since count is 1 */
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what counters exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_COUNTER_FREE_OUT_FREED_COUNTER_ID) !=
cnt->fw_id))
return -EIO;
return 0;
}
static int efx_mae_encap_type_to_mae_type(enum efx_encap_type type)
{
switch (type & EFX_ENCAP_TYPES_MASK) {
case EFX_ENCAP_TYPE_NONE:
return MAE_MCDI_ENCAP_TYPE_NONE;
case EFX_ENCAP_TYPE_VXLAN:
return MAE_MCDI_ENCAP_TYPE_VXLAN;
case EFX_ENCAP_TYPE_GENEVE:
return MAE_MCDI_ENCAP_TYPE_GENEVE;
default:
return -EOPNOTSUPP;
}
}
int efx_mae_allocate_encap_md(struct efx_nic *efx,
struct efx_tc_encap_action *encap)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LEN(EFX_TC_MAX_ENCAP_HDR));
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_LEN);
size_t inlen, outlen;
int rc;
rc = efx_mae_encap_type_to_mae_type(encap->type);
if (rc < 0)
return rc;
MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_ALLOC_IN_ENCAP_TYPE, rc);
inlen = MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LEN(encap->encap_hdr_len);
if (WARN_ON(inlen > sizeof(inbuf))) /* can't happen */
return -EINVAL;
memcpy(MCDI_PTR(inbuf, MAE_ENCAP_HEADER_ALLOC_IN_HDR_DATA),
encap->encap_hdr,
encap->encap_hdr_len);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_ALLOC, inbuf,
inlen, outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
encap->fw_id = MCDI_DWORD(outbuf, MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID);
return 0;
}
int efx_mae_update_encap_md(struct efx_nic *efx,
struct efx_tc_encap_action *encap)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_UPDATE_IN_LEN(EFX_TC_MAX_ENCAP_HDR));
size_t inlen;
int rc;
rc = efx_mae_encap_type_to_mae_type(encap->type);
if (rc < 0)
return rc;
MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_ENCAP_TYPE, rc);
MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_EH_ID,
encap->fw_id);
inlen = MC_CMD_MAE_ENCAP_HEADER_UPDATE_IN_LEN(encap->encap_hdr_len);
if (WARN_ON(inlen > sizeof(inbuf))) /* can't happen */
return -EINVAL;
memcpy(MCDI_PTR(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_HDR_DATA),
encap->encap_hdr,
encap->encap_hdr_len);
BUILD_BUG_ON(MC_CMD_MAE_ENCAP_HEADER_UPDATE_OUT_LEN != 0);
return efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_UPDATE, inbuf,
inlen, NULL, 0, NULL);
}
int efx_mae_free_encap_md(struct efx_nic *efx,
struct efx_tc_encap_action *encap)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ENCAP_HEADER_FREE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_FREE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_FREE_IN_EH_ID, encap->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_FREE, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what encap_mds exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_ENCAP_HEADER_FREE_OUT_FREED_EH_ID) != encap->fw_id))
return -EIO;
/* We're probably about to free @encap, but let's just make sure its
* fw_id is blatted so that it won't look valid if it leaks out.
*/
encap->fw_id = MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_NULL;
return 0;
}
int efx_mae_lookup_mport(struct efx_nic *efx, u32 vf_idx, u32 *id)
{
struct ef100_nic_data *nic_data = efx->nic_data;
struct efx_mae *mae = efx->mae;
struct rhashtable_iter walk;
struct mae_mport_desc *m;
int rc = -ENOENT;
rhashtable_walk_enter(&mae->mports_ht, &walk);
rhashtable_walk_start(&walk);
while ((m = rhashtable_walk_next(&walk)) != NULL) {
if (m->mport_type == MAE_MPORT_DESC_MPORT_TYPE_VNIC &&
m->interface_idx == nic_data->local_mae_intf &&
m->pf_idx == 0 &&
m->vf_idx == vf_idx) {
*id = m->mport_id;
rc = 0;
break;
}
}
rhashtable_walk_stop(&walk);
rhashtable_walk_exit(&walk);
return rc;
}
static bool efx_mae_asl_id(u32 id)
{
return !!(id & BIT(31));
}
/* mport handling */
static const struct rhashtable_params efx_mae_mports_ht_params = {
.key_len = sizeof(u32),
.key_offset = offsetof(struct mae_mport_desc, mport_id),
.head_offset = offsetof(struct mae_mport_desc, linkage),
};
struct mae_mport_desc *efx_mae_get_mport(struct efx_nic *efx, u32 mport_id)
{
return rhashtable_lookup_fast(&efx->mae->mports_ht, &mport_id,
efx_mae_mports_ht_params);
}
static int efx_mae_add_mport(struct efx_nic *efx, struct mae_mport_desc *desc)
{
struct efx_mae *mae = efx->mae;
int rc;
rc = rhashtable_insert_fast(&mae->mports_ht, &desc->linkage,
efx_mae_mports_ht_params);
if (rc) {
pci_err(efx->pci_dev, "Failed to insert MPORT %08x, rc %d\n",
desc->mport_id, rc);
kfree(desc);
return rc;
}
return rc;
}
void efx_mae_remove_mport(void *desc, void *arg)
{
struct mae_mport_desc *mport = desc;
synchronize_rcu();
kfree(mport);
}
static int efx_mae_process_mport(struct efx_nic *efx,
struct mae_mport_desc *desc)
{
struct ef100_nic_data *nic_data = efx->nic_data;
struct mae_mport_desc *mport;
mport = efx_mae_get_mport(efx, desc->mport_id);
if (!IS_ERR_OR_NULL(mport)) {
netif_err(efx, drv, efx->net_dev,
"mport with id %u does exist!!!\n", desc->mport_id);
return -EEXIST;
}
if (nic_data->have_own_mport &&
desc->mport_id == nic_data->own_mport) {
WARN_ON(desc->mport_type != MAE_MPORT_DESC_MPORT_TYPE_VNIC);
WARN_ON(desc->vnic_client_type !=
MAE_MPORT_DESC_VNIC_CLIENT_TYPE_FUNCTION);
nic_data->local_mae_intf = desc->interface_idx;
nic_data->have_local_intf = true;
pci_dbg(efx->pci_dev, "MAE interface_idx is %u\n",
nic_data->local_mae_intf);
}
return efx_mae_add_mport(efx, desc);
}
#define MCDI_MPORT_JOURNAL_LEN \
ALIGN(MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_LENMAX_MCDI2, 4)
int efx_mae_enumerate_mports(struct efx_nic *efx)
{
efx_dword_t *outbuf = kzalloc(MCDI_MPORT_JOURNAL_LEN, GFP_KERNEL);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_READ_JOURNAL_IN_LEN);
MCDI_DECLARE_STRUCT_PTR(desc);
size_t outlen, stride, count;
int rc = 0, i;
if (!outbuf)
return -ENOMEM;
do {
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_READ_JOURNAL, inbuf,
sizeof(inbuf), outbuf,
MCDI_MPORT_JOURNAL_LEN, &outlen);
if (rc)
goto fail;
if (outlen < MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_DATA_OFST) {
rc = -EIO;
goto fail;
}
count = MCDI_DWORD(outbuf, MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_COUNT);
if (!count)
continue; /* not break; we want to look at MORE flag */
stride = MCDI_DWORD(outbuf, MAE_MPORT_READ_JOURNAL_OUT_SIZEOF_MPORT_DESC);
if (stride < MAE_MPORT_DESC_LEN) {
rc = -EIO;
goto fail;
}
if (outlen < MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_LEN(count * stride)) {
rc = -EIO;
goto fail;
}
for (i = 0; i < count; i++) {
struct mae_mport_desc *d;
d = kzalloc(sizeof(*d), GFP_KERNEL);
if (!d) {
rc = -ENOMEM;
goto fail;
}
desc = (efx_dword_t *)
_MCDI_PTR(outbuf, MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_DATA_OFST +
i * stride);
d->mport_id = MCDI_STRUCT_DWORD(desc, MAE_MPORT_DESC_MPORT_ID);
d->flags = MCDI_STRUCT_DWORD(desc, MAE_MPORT_DESC_FLAGS);
d->caller_flags = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_CALLER_FLAGS);
d->mport_type = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_MPORT_TYPE);
switch (d->mport_type) {
case MAE_MPORT_DESC_MPORT_TYPE_NET_PORT:
d->port_idx = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_NET_PORT_IDX);
break;
case MAE_MPORT_DESC_MPORT_TYPE_ALIAS:
d->alias_mport_id = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_ALIAS_DELIVER_MPORT_ID);
break;
case MAE_MPORT_DESC_MPORT_TYPE_VNIC:
d->vnic_client_type = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_VNIC_CLIENT_TYPE);
d->interface_idx = MCDI_STRUCT_DWORD(desc,
MAE_MPORT_DESC_VNIC_FUNCTION_INTERFACE);
d->pf_idx = MCDI_STRUCT_WORD(desc,
MAE_MPORT_DESC_VNIC_FUNCTION_PF_IDX);
d->vf_idx = MCDI_STRUCT_WORD(desc,
MAE_MPORT_DESC_VNIC_FUNCTION_VF_IDX);
break;
default:
/* Unknown mport_type, just accept it */
break;
}
rc = efx_mae_process_mport(efx, d);
/* Any failure will be due to memory allocation faiure,
* so there is no point to try subsequent entries.
*/
if (rc)
goto fail;
}
} while (MCDI_FIELD(outbuf, MAE_MPORT_READ_JOURNAL_OUT, MORE) &&
!WARN_ON(!count));
fail:
kfree(outbuf);
return rc;
}
/**
* efx_mae_allocate_pedit_mac() - allocate pedit MAC address in HW.
* @efx: NIC we're installing a pedit MAC address on
* @ped: pedit MAC action to be installed
*
* Attempts to install @ped in HW and populates its id with an index of this
* entry in the firmware MAC address table on success.
*
* Return: negative value on error, 0 in success.
*/
int efx_mae_allocate_pedit_mac(struct efx_nic *efx,
struct efx_tc_mac_pedit_action *ped)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MAC_ADDR_ALLOC_IN_LEN);
size_t outlen;
int rc;
BUILD_BUG_ON(MC_CMD_MAE_MAC_ADDR_ALLOC_IN_MAC_ADDR_LEN !=
sizeof(ped->h_addr));
memcpy(MCDI_PTR(inbuf, MAE_MAC_ADDR_ALLOC_IN_MAC_ADDR), ped->h_addr,
sizeof(ped->h_addr));
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MAC_ADDR_ALLOC, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
ped->fw_id = MCDI_DWORD(outbuf, MAE_MAC_ADDR_ALLOC_OUT_MAC_ID);
return 0;
}
/**
* efx_mae_free_pedit_mac() - free pedit MAC address in HW.
* @efx: NIC we're installing a pedit MAC address on
* @ped: pedit MAC action that needs to be freed
*
* Frees @ped in HW, check that firmware did not free a different one and clears
* the id (which denotes the index of the entry in the MAC address table).
*/
void efx_mae_free_pedit_mac(struct efx_nic *efx,
struct efx_tc_mac_pedit_action *ped)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MAC_ADDR_FREE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MAC_ADDR_FREE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_MAC_ADDR_FREE_IN_MAC_ID, ped->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MAC_ADDR_FREE, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc || outlen < sizeof(outbuf))
return;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what MAC addresses exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_MAC_ADDR_FREE_OUT_FREED_MAC_ID) != ped->fw_id))
return;
/* We're probably about to free @ped, but let's just make sure its
* fw_id is blatted so that it won't look valid if it leaks out.
*/
ped->fw_id = MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL;
}
int efx_mae_alloc_action_set(struct efx_nic *efx, struct efx_tc_action_set *act)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_ALLOC_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_ALLOC_IN_LEN);
size_t outlen;
int rc;
MCDI_POPULATE_DWORD_5(inbuf, MAE_ACTION_SET_ALLOC_IN_FLAGS,
MAE_ACTION_SET_ALLOC_IN_VLAN_PUSH, act->vlan_push,
MAE_ACTION_SET_ALLOC_IN_VLAN_POP, act->vlan_pop,
MAE_ACTION_SET_ALLOC_IN_DECAP, act->decap,
MAE_ACTION_SET_ALLOC_IN_DO_NAT, act->do_nat,
MAE_ACTION_SET_ALLOC_IN_DO_DECR_IP_TTL,
act->do_ttl_dec);
if (act->src_mac)
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_SRC_MAC_ID,
act->src_mac->fw_id);
else
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_SRC_MAC_ID,
MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL);
if (act->dst_mac)
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DST_MAC_ID,
act->dst_mac->fw_id);
else
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DST_MAC_ID,
MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL);
if (act->count && !WARN_ON(!act->count->cnt))
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_ID,
act->count->cnt->fw_id);
else
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_ID,
MC_CMD_MAE_COUNTER_ALLOC_OUT_COUNTER_ID_NULL);
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_LIST_ID,
MC_CMD_MAE_COUNTER_LIST_ALLOC_OUT_COUNTER_LIST_ID_NULL);
if (act->vlan_push) {
MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN0_TCI_BE,
act->vlan_tci[0]);
MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN0_PROTO_BE,
act->vlan_proto[0]);
}
if (act->vlan_push >= 2) {
MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN1_TCI_BE,
act->vlan_tci[1]);
MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN1_PROTO_BE,
act->vlan_proto[1]);
}
if (act->encap_md)
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_ENCAP_HEADER_ID,
act->encap_md->fw_id);
else
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_ENCAP_HEADER_ID,
MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_NULL);
if (act->deliver)
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DELIVER,
act->dest_mport);
BUILD_BUG_ON(MAE_MPORT_SELECTOR_NULL);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_ALLOC, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
act->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_SET_ALLOC_OUT_AS_ID);
/* We rely on the high bit of AS IDs always being clear.
* The firmware API guarantees this, but let's check it ourselves.
*/
if (WARN_ON_ONCE(efx_mae_asl_id(act->fw_id))) {
efx_mae_free_action_set(efx, act->fw_id);
return -EIO;
}
return 0;
}
int efx_mae_free_action_set(struct efx_nic *efx, u32 fw_id)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_FREE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_FREE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_FREE_IN_AS_ID, fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_FREE, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should never happen.
* Warn because it means we've now got a different idea to the FW of
* what action-sets exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_SET_FREE_OUT_FREED_AS_ID) != fw_id))
return -EIO;
return 0;
}
int efx_mae_alloc_action_set_list(struct efx_nic *efx,
struct efx_tc_action_set_list *acts)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_LEN);
struct efx_tc_action_set *act;
size_t inlen, outlen, i = 0;
efx_dword_t *inbuf;
int rc;
list_for_each_entry(act, &acts->list, list)
i++;
if (i == 0)
return -EINVAL;
if (i == 1) {
/* Don't wrap an ASL around a single AS, just use the AS_ID
* directly. ASLs are a more limited resource.
*/
act = list_first_entry(&acts->list, struct efx_tc_action_set, list);
acts->fw_id = act->fw_id;
return 0;
}
if (i > MC_CMD_MAE_ACTION_SET_LIST_ALLOC_IN_AS_IDS_MAXNUM_MCDI2)
return -EOPNOTSUPP; /* Too many actions */
inlen = MC_CMD_MAE_ACTION_SET_LIST_ALLOC_IN_LEN(i);
inbuf = kzalloc(inlen, GFP_KERNEL);
if (!inbuf)
return -ENOMEM;
i = 0;
list_for_each_entry(act, &acts->list, list) {
MCDI_SET_ARRAY_DWORD(inbuf, MAE_ACTION_SET_LIST_ALLOC_IN_AS_IDS,
i, act->fw_id);
i++;
}
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_LIST_ALLOC_IN_COUNT, i);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_LIST_ALLOC, inbuf, inlen,
outbuf, sizeof(outbuf), &outlen);
if (rc)
goto out_free;
if (outlen < sizeof(outbuf)) {
rc = -EIO;
goto out_free;
}
acts->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_SET_LIST_ALLOC_OUT_ASL_ID);
/* We rely on the high bit of ASL IDs always being set.
* The firmware API guarantees this, but let's check it ourselves.
*/
if (WARN_ON_ONCE(!efx_mae_asl_id(acts->fw_id))) {
efx_mae_free_action_set_list(efx, acts);
rc = -EIO;
}
out_free:
kfree(inbuf);
return rc;
}
int efx_mae_free_action_set_list(struct efx_nic *efx,
struct efx_tc_action_set_list *acts)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_LIST_FREE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_LIST_FREE_IN_LEN(1));
size_t outlen;
int rc;
/* If this is just an AS_ID with no ASL wrapper, then there is
* nothing for us to free. (The AS will be freed later.)
*/
if (efx_mae_asl_id(acts->fw_id)) {
MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_LIST_FREE_IN_ASL_ID,
acts->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_LIST_FREE, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should never happen.
* Warn because it means we've now got a different idea to the FW of
* what action-set-lists exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_SET_LIST_FREE_OUT_FREED_ASL_ID) != acts->fw_id))
return -EIO;
}
/* We're probably about to free @acts, but let's just make sure its
* fw_id is blatted so that it won't look valid if it leaks out.
*/
acts->fw_id = MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL;
return 0;
}
int efx_mae_register_encap_match(struct efx_nic *efx,
struct efx_tc_encap_match *encap)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_INSERT_IN_LEN(MAE_ENC_FIELD_PAIRS_LEN));
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_INSERT_OUT_LEN);
MCDI_DECLARE_STRUCT_PTR(match_crit);
size_t outlen;
int rc;
rc = efx_mae_encap_type_to_mae_type(encap->tun_type);
if (rc < 0)
return rc;
match_crit = _MCDI_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_FIELD_MATCH_CRITERIA);
/* The struct contains IP src and dst, and udp dport.
* So we actually need to filter on IP src and dst, L4 dport, and
* ipproto == udp.
*/
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_ENCAP_TYPE, rc);
#ifdef CONFIG_IPV6
if (encap->src_ip | encap->dst_ip) {
#endif
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE,
encap->src_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE_MASK,
~(__be32)0);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE,
encap->dst_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE_MASK,
~(__be32)0);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
htons(ETH_P_IP));
#ifdef CONFIG_IPV6
} else {
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE),
&encap->src_ip6, sizeof(encap->src_ip6));
memset(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE_MASK),
0xff, sizeof(encap->src_ip6));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE),
&encap->dst_ip6, sizeof(encap->dst_ip6));
memset(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE_MASK),
0xff, sizeof(encap->dst_ip6));
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
htons(ETH_P_IPV6));
}
#endif
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE_MASK,
~(__be16)0);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
encap->udp_dport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
~(__be16)0);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
encap->udp_sport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
encap->udp_sport_mask);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO, IPPROTO_UDP);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO_MASK, ~0);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS,
encap->ip_tos);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS_MASK,
encap->ip_tos_mask);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_INSERT, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
encap->fw_id = MCDI_DWORD(outbuf, MAE_OUTER_RULE_INSERT_OUT_OR_ID);
return 0;
}
int efx_mae_unregister_encap_match(struct efx_nic *efx,
struct efx_tc_encap_match *encap)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_REMOVE_IN_OR_ID, encap->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_REMOVE, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what encap_mds exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_OUTER_RULE_REMOVE_OUT_REMOVED_OR_ID) != encap->fw_id))
return -EIO;
/* We're probably about to free @encap, but let's just make sure its
* fw_id is blatted so that it won't look valid if it leaks out.
*/
encap->fw_id = MC_CMD_MAE_OUTER_RULE_INSERT_OUT_OUTER_RULE_ID_NULL;
return 0;
}
static int efx_mae_populate_lhs_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
const struct efx_tc_match *match)
{
if (match->mask.ingress_port) {
if (~match->mask.ingress_port)
return -EOPNOTSUPP;
MCDI_STRUCT_SET_DWORD(match_crit,
MAE_ENC_FIELD_PAIRS_INGRESS_MPORT_SELECTOR,
match->value.ingress_port);
}
MCDI_STRUCT_SET_DWORD(match_crit, MAE_ENC_FIELD_PAIRS_INGRESS_MPORT_SELECTOR_MASK,
match->mask.ingress_port);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
match->value.eth_proto);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE_MASK,
match->mask.eth_proto);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_TCI_BE,
match->value.vlan_tci[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_TCI_BE_MASK,
match->mask.vlan_tci[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_PROTO_BE,
match->value.vlan_proto[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_PROTO_BE_MASK,
match->mask.vlan_proto[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_TCI_BE,
match->value.vlan_tci[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_TCI_BE_MASK,
match->mask.vlan_tci[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_PROTO_BE,
match->value.vlan_proto[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_PROTO_BE_MASK,
match->mask.vlan_proto[1]);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_SADDR_BE),
match->value.eth_saddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_SADDR_BE_MASK),
match->mask.eth_saddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_DADDR_BE),
match->value.eth_daddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_DADDR_BE_MASK),
match->mask.eth_daddr, ETH_ALEN);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO,
match->value.ip_proto);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO_MASK,
match->mask.ip_proto);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS,
match->value.ip_tos);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS_MASK,
match->mask.ip_tos);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TTL,
match->value.ip_ttl);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TTL_MASK,
match->mask.ip_ttl);
MCDI_STRUCT_POPULATE_BYTE_1(match_crit,
MAE_ENC_FIELD_PAIRS_ENC_VLAN_FLAGS,
MAE_ENC_FIELD_PAIRS_ENC_IP_FRAG,
match->value.ip_frag);
MCDI_STRUCT_POPULATE_BYTE_1(match_crit,
MAE_ENC_FIELD_PAIRS_ENC_VLAN_FLAGS_MASK,
MAE_ENC_FIELD_PAIRS_ENC_IP_FRAG_MASK,
match->mask.ip_frag);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE,
match->value.src_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE_MASK,
match->mask.src_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE,
match->value.dst_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE_MASK,
match->mask.dst_ip);
#ifdef CONFIG_IPV6
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE),
&match->value.src_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE_MASK),
&match->mask.src_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE),
&match->value.dst_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE_MASK),
&match->mask.dst_ip6, sizeof(struct in6_addr));
#endif
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_SPORT_BE,
match->value.l4_sport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_SPORT_BE_MASK,
match->mask.l4_sport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
match->value.l4_dport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
match->mask.l4_dport);
/* No enc-keys in LHS rules. Caps check should have caught this; any
* enc-keys from an fLHS should have been translated to regular keys
* and any EM should be a pseudo (we're an OR so can't have a direct
* EM with another OR).
*/
if (WARN_ON_ONCE(match->encap && !match->encap->type))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_src_ip))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_dst_ip))
return -EOPNOTSUPP;
#ifdef CONFIG_IPV6
if (WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_src_ip6)))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_dst_ip6)))
return -EOPNOTSUPP;
#endif
if (WARN_ON_ONCE(match->mask.enc_ip_tos))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_ip_ttl))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_sport))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_dport))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(match->mask.enc_keyid))
return -EOPNOTSUPP;
return 0;
}
static int efx_mae_insert_lhs_outer_rule(struct efx_nic *efx,
struct efx_tc_lhs_rule *rule, u32 prio)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_INSERT_IN_LEN(MAE_ENC_FIELD_PAIRS_LEN));
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_INSERT_OUT_LEN);
MCDI_DECLARE_STRUCT_PTR(match_crit);
const struct efx_tc_lhs_action *act;
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_PRIO, prio);
/* match */
match_crit = _MCDI_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_FIELD_MATCH_CRITERIA);
rc = efx_mae_populate_lhs_match_criteria(match_crit, &rule->match);
if (rc)
return rc;
/* action */
act = &rule->lhs_act;
rc = efx_mae_encap_type_to_mae_type(act->tun_type);
if (rc < 0)
return rc;
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_ENCAP_TYPE, rc);
/* We always inhibit CT lookup on TCP_INTERESTING_FLAGS, since the
* SW path needs to process the packet to update the conntrack tables
* on connection establishment (SYN) or termination (FIN, RST).
*/
MCDI_POPULATE_DWORD_6(inbuf, MAE_OUTER_RULE_INSERT_IN_LOOKUP_CONTROL,
MAE_OUTER_RULE_INSERT_IN_DO_CT, !!act->zone,
MAE_OUTER_RULE_INSERT_IN_CT_TCP_FLAGS_INHIBIT, 1,
MAE_OUTER_RULE_INSERT_IN_CT_DOMAIN,
act->zone ? act->zone->zone : 0,
MAE_OUTER_RULE_INSERT_IN_CT_VNI_MODE,
MAE_CT_VNI_MODE_ZERO,
MAE_OUTER_RULE_INSERT_IN_DO_COUNT, !!act->count,
MAE_OUTER_RULE_INSERT_IN_RECIRC_ID,
act->rid ? act->rid->fw_id : 0);
if (act->count)
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_COUNTER_ID,
act->count->cnt->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_INSERT, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
rule->fw_id = MCDI_DWORD(outbuf, MAE_OUTER_RULE_INSERT_OUT_OR_ID);
return 0;
}
static int efx_mae_populate_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
const struct efx_tc_match *match);
static int efx_mae_insert_lhs_action_rule(struct efx_nic *efx,
struct efx_tc_lhs_rule *rule,
u32 prio)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_INSERT_IN_LEN(MAE_FIELD_MASK_VALUE_PAIRS_V2_LEN));
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_INSERT_OUT_LEN);
struct efx_tc_lhs_action *act = &rule->lhs_act;
MCDI_DECLARE_STRUCT_PTR(match_crit);
MCDI_DECLARE_STRUCT_PTR(response);
size_t outlen;
int rc;
match_crit = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_MATCH_CRITERIA);
response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_RESPONSE);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(response, MAE_ACTION_RULE_RESPONSE_LOOKUP_CONTROL),
MAE_ACTION_RULE_RESPONSE_DO_CT, !!act->zone,
MAE_ACTION_RULE_RESPONSE_DO_RECIRC,
act->rid && !act->zone,
MAE_ACTION_RULE_RESPONSE_CT_VNI_MODE,
MAE_CT_VNI_MODE_ZERO,
MAE_ACTION_RULE_RESPONSE_RECIRC_ID,
act->rid ? act->rid->fw_id : 0,
MAE_ACTION_RULE_RESPONSE_CT_DOMAIN,
act->zone ? act->zone->zone : 0);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_COUNTER_ID,
act->count ? act->count->cnt->fw_id :
MC_CMD_MAE_COUNTER_ALLOC_OUT_COUNTER_ID_NULL);
MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_PRIO, prio);
rc = efx_mae_populate_match_criteria(match_crit, &rule->match);
if (rc)
return rc;
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_INSERT, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
rule->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_RULE_INSERT_OUT_AR_ID);
return 0;
}
int efx_mae_insert_lhs_rule(struct efx_nic *efx, struct efx_tc_lhs_rule *rule,
u32 prio)
{
if (rule->is_ar)
return efx_mae_insert_lhs_action_rule(efx, rule, prio);
return efx_mae_insert_lhs_outer_rule(efx, rule, prio);
}
static int efx_mae_remove_lhs_outer_rule(struct efx_nic *efx,
struct efx_tc_lhs_rule *rule)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_REMOVE_IN_OR_ID, rule->fw_id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_REMOVE, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what encap_mds exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_OUTER_RULE_REMOVE_OUT_REMOVED_OR_ID) != rule->fw_id))
return -EIO;
/* We're probably about to free @rule, but let's just make sure its
* fw_id is blatted so that it won't look valid if it leaks out.
*/
rule->fw_id = MC_CMD_MAE_OUTER_RULE_INSERT_OUT_OUTER_RULE_ID_NULL;
return 0;
}
int efx_mae_remove_lhs_rule(struct efx_nic *efx, struct efx_tc_lhs_rule *rule)
{
if (rule->is_ar)
return efx_mae_delete_rule(efx, rule->fw_id);
return efx_mae_remove_lhs_outer_rule(efx, rule);
}
/* Populating is done by taking each byte of @value in turn and storing
* it in the appropriate bits of @row. @value must be big-endian; we
* convert it to little-endianness as we go.
*/
static int efx_mae_table_populate(struct efx_tc_table_field_fmt field,
__le32 *row, size_t row_bits,
void *value, size_t value_size)
{
unsigned int i;
/* For now only scheme 0 is supported for any field, so we check here
* (rather than, say, in calling code, which knows the semantics and
* could in principle encode for other schemes).
*/
if (field.scheme)
return -EOPNOTSUPP;
if (DIV_ROUND_UP(field.width, 8) != value_size)
return -EINVAL;
if (field.lbn + field.width > row_bits)
return -EINVAL;
for (i = 0; i < value_size; i++) {
unsigned int bn = field.lbn + i * 8;
unsigned int wn = bn / 32;
u64 v;
v = ((u8 *)value)[value_size - i - 1];
v <<= (bn % 32);
row[wn] |= cpu_to_le32(v & 0xffffffff);
if (wn * 32 < row_bits)
row[wn + 1] |= cpu_to_le32(v >> 32);
}
return 0;
}
static int efx_mae_table_populate_bool(struct efx_tc_table_field_fmt field,
__le32 *row, size_t row_bits, bool value)
{
u8 v = value ? 1 : 0;
if (field.width != 1)
return -EINVAL;
return efx_mae_table_populate(field, row, row_bits, &v, 1);
}
static int efx_mae_table_populate_ipv4(struct efx_tc_table_field_fmt field,
__le32 *row, size_t row_bits, __be32 value)
{
/* IPv4 is placed in the first 4 bytes of an IPv6-sized field */
struct in6_addr v = {};
if (field.width != 128)
return -EINVAL;
v.s6_addr32[0] = value;
return efx_mae_table_populate(field, row, row_bits, &v, sizeof(v));
}
static int efx_mae_table_populate_u24(struct efx_tc_table_field_fmt field,
__le32 *row, size_t row_bits, u32 value)
{
__be32 v = cpu_to_be32(value);
/* We adjust value_size here since just 3 bytes will be copied, and
* the pointer to the value is set discarding the first byte which is
* the most significant byte for a big-endian 4-bytes value.
*/
return efx_mae_table_populate(field, row, row_bits, ((void *)&v) + 1,
sizeof(v) - 1);
}
#define _TABLE_POPULATE(dst, dw, _field, _value) ({ \
typeof(_value) _v = _value; \
\
(_field.width == sizeof(_value) * 8) ? \
efx_mae_table_populate(_field, dst, dw, &_v, \
sizeof(_v)) : -EINVAL; \
})
#define TABLE_POPULATE_KEY_IPV4(dst, _table, _field, _value) \
efx_mae_table_populate_ipv4(efx->tc->meta_##_table.desc.keys \
[efx->tc->meta_##_table.keys._field##_idx],\
dst, efx->tc->meta_##_table.desc.key_width,\
_value)
#define TABLE_POPULATE_KEY(dst, _table, _field, _value) \
_TABLE_POPULATE(dst, efx->tc->meta_##_table.desc.key_width, \
efx->tc->meta_##_table.desc.keys \
[efx->tc->meta_##_table.keys._field##_idx], \
_value)
#define TABLE_POPULATE_RESP_BOOL(dst, _table, _field, _value) \
efx_mae_table_populate_bool(efx->tc->meta_##_table.desc.resps \
[efx->tc->meta_##_table.resps._field##_idx],\
dst, efx->tc->meta_##_table.desc.resp_width,\
_value)
#define TABLE_POPULATE_RESP(dst, _table, _field, _value) \
_TABLE_POPULATE(dst, efx->tc->meta_##_table.desc.resp_width, \
efx->tc->meta_##_table.desc.resps \
[efx->tc->meta_##_table.resps._field##_idx], \
_value)
#define TABLE_POPULATE_RESP_U24(dst, _table, _field, _value) \
efx_mae_table_populate_u24(efx->tc->meta_##_table.desc.resps \
[efx->tc->meta_##_table.resps._field##_idx],\
dst, efx->tc->meta_##_table.desc.resp_width,\
_value)
static int efx_mae_populate_ct_key(struct efx_nic *efx, __le32 *key, size_t kw,
struct efx_tc_ct_entry *conn)
{
bool ipv6 = conn->eth_proto == htons(ETH_P_IPV6);
int rc;
rc = TABLE_POPULATE_KEY(key, ct, eth_proto, conn->eth_proto);
if (rc)
return rc;
rc = TABLE_POPULATE_KEY(key, ct, ip_proto, conn->ip_proto);
if (rc)
return rc;
if (ipv6)
rc = TABLE_POPULATE_KEY(key, ct, src_ip, conn->src_ip6);
else
rc = TABLE_POPULATE_KEY_IPV4(key, ct, src_ip, conn->src_ip);
if (rc)
return rc;
if (ipv6)
rc = TABLE_POPULATE_KEY(key, ct, dst_ip, conn->dst_ip6);
else
rc = TABLE_POPULATE_KEY_IPV4(key, ct, dst_ip, conn->dst_ip);
if (rc)
return rc;
rc = TABLE_POPULATE_KEY(key, ct, l4_sport, conn->l4_sport);
if (rc)
return rc;
rc = TABLE_POPULATE_KEY(key, ct, l4_dport, conn->l4_dport);
if (rc)
return rc;
return TABLE_POPULATE_KEY(key, ct, zone, cpu_to_be16(conn->zone->zone));
}
int efx_mae_insert_ct(struct efx_nic *efx, struct efx_tc_ct_entry *conn)
{
bool ipv6 = conn->eth_proto == htons(ETH_P_IPV6);
__le32 *key = NULL, *resp = NULL;
size_t inlen, kw, rw;
efx_dword_t *inbuf;
int rc = -ENOMEM;
/* Check table access is supported */
if (!efx->tc->meta_ct.hooked)
return -EOPNOTSUPP;
/* key/resp widths are in bits; convert to dwords for IN_LEN */
kw = DIV_ROUND_UP(efx->tc->meta_ct.desc.key_width, 32);
rw = DIV_ROUND_UP(efx->tc->meta_ct.desc.resp_width, 32);
BUILD_BUG_ON(sizeof(__le32) != MC_CMD_TABLE_INSERT_IN_DATA_LEN);
inlen = MC_CMD_TABLE_INSERT_IN_LEN(kw + rw);
if (inlen > MC_CMD_TABLE_INSERT_IN_LENMAX_MCDI2)
return -E2BIG;
inbuf = kzalloc(inlen, GFP_KERNEL);
if (!inbuf)
return -ENOMEM;
key = kcalloc(kw, sizeof(__le32), GFP_KERNEL);
if (!key)
goto out_free;
resp = kcalloc(rw, sizeof(__le32), GFP_KERNEL);
if (!resp)
goto out_free;
rc = efx_mae_populate_ct_key(efx, key, kw, conn);
if (rc)
goto out_free;
rc = TABLE_POPULATE_RESP_BOOL(resp, ct, dnat, conn->dnat);
if (rc)
goto out_free;
/* No support in hw for IPv6 NAT; field is only 32 bits */
if (!ipv6)
rc = TABLE_POPULATE_RESP(resp, ct, nat_ip, conn->nat_ip);
if (rc)
goto out_free;
rc = TABLE_POPULATE_RESP(resp, ct, l4_natport, conn->l4_natport);
if (rc)
goto out_free;
rc = TABLE_POPULATE_RESP(resp, ct, mark, cpu_to_be32(conn->mark));
if (rc)
goto out_free;
rc = TABLE_POPULATE_RESP_U24(resp, ct, counter_id, conn->cnt->fw_id);
if (rc)
goto out_free;
MCDI_SET_DWORD(inbuf, TABLE_INSERT_IN_TABLE_ID, TABLE_ID_CONNTRACK_TABLE);
MCDI_SET_WORD(inbuf, TABLE_INSERT_IN_KEY_WIDTH,
efx->tc->meta_ct.desc.key_width);
/* MASK_WIDTH is zero as CT is a BCAM */
MCDI_SET_WORD(inbuf, TABLE_INSERT_IN_RESP_WIDTH,
efx->tc->meta_ct.desc.resp_width);
memcpy(MCDI_PTR(inbuf, TABLE_INSERT_IN_DATA), key, kw * sizeof(__le32));
memcpy(MCDI_PTR(inbuf, TABLE_INSERT_IN_DATA) + kw * sizeof(__le32),
resp, rw * sizeof(__le32));
BUILD_BUG_ON(MC_CMD_TABLE_INSERT_OUT_LEN);
rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_INSERT, inbuf, inlen, NULL, 0, NULL);
out_free:
kfree(resp);
kfree(key);
kfree(inbuf);
return rc;
}
int efx_mae_remove_ct(struct efx_nic *efx, struct efx_tc_ct_entry *conn)
{
__le32 *key = NULL;
efx_dword_t *inbuf;
size_t inlen, kw;
int rc = -ENOMEM;
/* Check table access is supported */
if (!efx->tc->meta_ct.hooked)
return -EOPNOTSUPP;
/* key width is in bits; convert to dwords for IN_LEN */
kw = DIV_ROUND_UP(efx->tc->meta_ct.desc.key_width, 32);
BUILD_BUG_ON(sizeof(__le32) != MC_CMD_TABLE_DELETE_IN_DATA_LEN);
inlen = MC_CMD_TABLE_DELETE_IN_LEN(kw);
if (inlen > MC_CMD_TABLE_DELETE_IN_LENMAX_MCDI2)
return -E2BIG;
inbuf = kzalloc(inlen, GFP_KERNEL);
if (!inbuf)
return -ENOMEM;
key = kcalloc(kw, sizeof(__le32), GFP_KERNEL);
if (!key)
goto out_free;
rc = efx_mae_populate_ct_key(efx, key, kw, conn);
if (rc)
goto out_free;
MCDI_SET_DWORD(inbuf, TABLE_DELETE_IN_TABLE_ID, TABLE_ID_CONNTRACK_TABLE);
MCDI_SET_WORD(inbuf, TABLE_DELETE_IN_KEY_WIDTH,
efx->tc->meta_ct.desc.key_width);
/* MASK_WIDTH is zero as CT is a BCAM */
/* RESP_WIDTH is zero for DELETE */
memcpy(MCDI_PTR(inbuf, TABLE_DELETE_IN_DATA), key, kw * sizeof(__le32));
BUILD_BUG_ON(MC_CMD_TABLE_DELETE_OUT_LEN);
rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_DELETE, inbuf, inlen, NULL, 0, NULL);
out_free:
kfree(key);
kfree(inbuf);
return rc;
}
static int efx_mae_populate_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
const struct efx_tc_match *match)
{
if (match->mask.ingress_port) {
if (~match->mask.ingress_port)
return -EOPNOTSUPP;
MCDI_STRUCT_SET_DWORD(match_crit,
MAE_FIELD_MASK_VALUE_PAIRS_V2_INGRESS_MPORT_SELECTOR,
match->value.ingress_port);
}
MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_INGRESS_MPORT_SELECTOR_MASK,
match->mask.ingress_port);
EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_FLAGS),
MAE_FIELD_MASK_VALUE_PAIRS_V2_DO_CT,
match->value.ct_state_trk,
MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_HIT,
match->value.ct_state_est,
MAE_FIELD_MASK_VALUE_PAIRS_V2_IS_IP_FRAG,
match->value.ip_frag,
MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_FIRST_FRAG,
match->value.ip_firstfrag,
MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_SYN_FIN_RST,
match->value.tcp_syn_fin_rst);
EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_FLAGS_MASK),
MAE_FIELD_MASK_VALUE_PAIRS_V2_DO_CT,
match->mask.ct_state_trk,
MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_HIT,
match->mask.ct_state_est,
MAE_FIELD_MASK_VALUE_PAIRS_V2_IS_IP_FRAG,
match->mask.ip_frag,
MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_FIRST_FRAG,
match->mask.ip_firstfrag,
MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_SYN_FIN_RST,
match->mask.tcp_syn_fin_rst);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_RECIRC_ID,
match->value.recirc_id);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_RECIRC_ID_MASK,
match->mask.recirc_id);
MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_MARK,
match->value.ct_mark);
MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_MARK_MASK,
match->mask.ct_mark);
MCDI_STRUCT_SET_WORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_DOMAIN,
match->value.ct_zone);
MCDI_STRUCT_SET_WORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_DOMAIN_MASK,
match->mask.ct_zone);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETHER_TYPE_BE,
match->value.eth_proto);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETHER_TYPE_BE_MASK,
match->mask.eth_proto);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_TCI_BE,
match->value.vlan_tci[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_TCI_BE_MASK,
match->mask.vlan_tci[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_PROTO_BE,
match->value.vlan_proto[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_PROTO_BE_MASK,
match->mask.vlan_proto[0]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_TCI_BE,
match->value.vlan_tci[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_TCI_BE_MASK,
match->mask.vlan_tci[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_PROTO_BE,
match->value.vlan_proto[1]);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_PROTO_BE_MASK,
match->mask.vlan_proto[1]);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_SADDR_BE),
match->value.eth_saddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_SADDR_BE_MASK),
match->mask.eth_saddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_DADDR_BE),
match->value.eth_daddr, ETH_ALEN);
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_DADDR_BE_MASK),
match->mask.eth_daddr, ETH_ALEN);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_PROTO,
match->value.ip_proto);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_PROTO_MASK,
match->mask.ip_proto);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TOS,
match->value.ip_tos);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TOS_MASK,
match->mask.ip_tos);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TTL,
match->value.ip_ttl);
MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TTL_MASK,
match->mask.ip_ttl);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP4_BE,
match->value.src_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP4_BE_MASK,
match->mask.src_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP4_BE,
match->value.dst_ip);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP4_BE_MASK,
match->mask.dst_ip);
#ifdef CONFIG_IPV6
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP6_BE),
&match->value.src_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP6_BE_MASK),
&match->mask.src_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP6_BE),
&match->value.dst_ip6, sizeof(struct in6_addr));
memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP6_BE_MASK),
&match->mask.dst_ip6, sizeof(struct in6_addr));
#endif
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_SPORT_BE,
match->value.l4_sport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_SPORT_BE_MASK,
match->mask.l4_sport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_DPORT_BE,
match->value.l4_dport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_DPORT_BE_MASK,
match->mask.l4_dport);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_FLAGS_BE,
match->value.tcp_flags);
MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_FLAGS_BE_MASK,
match->mask.tcp_flags);
/* enc-keys are handled indirectly, through encap_match ID */
if (match->encap) {
MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_OUTER_RULE_ID,
match->encap->fw_id);
MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_OUTER_RULE_ID_MASK,
U32_MAX);
/* enc_keyid (VNI/VSID) is not part of the encap_match */
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ENC_VNET_ID_BE,
match->value.enc_keyid);
MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ENC_VNET_ID_BE_MASK,
match->mask.enc_keyid);
} else if (WARN_ON_ONCE(match->mask.enc_src_ip) ||
WARN_ON_ONCE(match->mask.enc_dst_ip) ||
WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_src_ip6)) ||
WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_dst_ip6)) ||
WARN_ON_ONCE(match->mask.enc_ip_tos) ||
WARN_ON_ONCE(match->mask.enc_ip_ttl) ||
WARN_ON_ONCE(match->mask.enc_sport) ||
WARN_ON_ONCE(match->mask.enc_dport) ||
WARN_ON_ONCE(match->mask.enc_keyid)) {
/* No enc-keys should appear in a rule without an encap_match */
return -EOPNOTSUPP;
}
return 0;
}
int efx_mae_insert_rule(struct efx_nic *efx, const struct efx_tc_match *match,
u32 prio, u32 acts_id, u32 *id)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_INSERT_IN_LEN(MAE_FIELD_MASK_VALUE_PAIRS_V2_LEN));
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_INSERT_OUT_LEN);
MCDI_DECLARE_STRUCT_PTR(match_crit);
MCDI_DECLARE_STRUCT_PTR(response);
size_t outlen;
int rc;
if (!id)
return -EINVAL;
match_crit = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_MATCH_CRITERIA);
response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_RESPONSE);
if (efx_mae_asl_id(acts_id)) {
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID, acts_id);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
} else {
/* We only had one AS, so we didn't wrap it in an ASL */
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID, acts_id);
}
MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_PRIO, prio);
rc = efx_mae_populate_match_criteria(match_crit, match);
if (rc)
return rc;
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_INSERT, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
*id = MCDI_DWORD(outbuf, MAE_ACTION_RULE_INSERT_OUT_AR_ID);
return 0;
}
int efx_mae_update_rule(struct efx_nic *efx, u32 acts_id, u32 id)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_UPDATE_IN_LEN);
MCDI_DECLARE_STRUCT_PTR(response);
BUILD_BUG_ON(MC_CMD_MAE_ACTION_RULE_UPDATE_OUT_LEN);
response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_UPDATE_IN_RESPONSE);
MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_UPDATE_IN_AR_ID, id);
if (efx_mae_asl_id(acts_id)) {
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID, acts_id);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
} else {
/* We only had one AS, so we didn't wrap it in an ASL */
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID, acts_id);
}
return efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_UPDATE, inbuf, sizeof(inbuf),
NULL, 0, NULL);
}
int efx_mae_delete_rule(struct efx_nic *efx, u32 id)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_DELETE_OUT_LEN(1));
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_DELETE_IN_LEN(1));
size_t outlen;
int rc;
MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_DELETE_IN_AR_ID, id);
rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_DELETE, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (rc)
return rc;
if (outlen < sizeof(outbuf))
return -EIO;
/* FW freed a different ID than we asked for, should also never happen.
* Warn because it means we've now got a different idea to the FW of
* what rules exist, which could cause mayhem later.
*/
if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_RULE_DELETE_OUT_DELETED_AR_ID) != id))
return -EIO;
return 0;
}
int efx_init_mae(struct efx_nic *efx)
{
struct ef100_nic_data *nic_data = efx->nic_data;
struct efx_mae *mae;
int rc;
if (!nic_data->have_mport)
return -EINVAL;
mae = kmalloc(sizeof(*mae), GFP_KERNEL);
if (!mae)
return -ENOMEM;
rc = rhashtable_init(&mae->mports_ht, &efx_mae_mports_ht_params);
if (rc < 0) {
kfree(mae);
return rc;
}
efx->mae = mae;
mae->efx = efx;
return 0;
}
void efx_fini_mae(struct efx_nic *efx)
{
struct efx_mae *mae = efx->mae;
kfree(mae);
efx->mae = NULL;
}
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