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numam-dpdk/drivers/net/igc/igc_flow.c
Thomas Monjalon f17c5d7abd net/igc: remove use of uint type 
Improve portability (especially with musl libc)
by replacing the non-standard type 'uint' with 'size_t'.

Fixes: 746664d546 ("net/igc: support flow API")
Cc: stable@dpdk.org

Suggested-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>
2021-03-23 08:41:05 +01:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2020 Intel Corporation
*/
#include "rte_malloc.h"
#include "igc_logs.h"
#include "igc_txrx.h"
#include "igc_filter.h"
#include "igc_flow.h"
/*******************************************************************************
* All Supported Rule Type
*
* Notes:
* `para` or `(para)`, the para must been set
* `[para]`, the para is optional
* `([para1][para2]...)`, all paras is optional, but must one of them been set
* `para1 | para2 | ...`, only one of the paras can be set
*
* ether-type filter
* pattern: ETH(type)/END
* action: QUEUE/END
* attribute:
*
* n-tuple filter
* pattern: [ETH/]([IPv4(protocol)|IPv6(protocol)/][UDP(dst_port)|
* TCP([dst_port],[flags])|SCTP(dst_port)/])END
* action: QUEUE/END
* attribute: [priority(0-7)]
*
* SYN filter
* pattern: [ETH/][IPv4|IPv6/]TCP(flags=SYN)/END
* action: QUEUE/END
* attribute: [priority(0,1)]
*
* RSS filter
* pattern:
* action: RSS/END
* attribute:
******************************************************************************/
/* Structure to store all filters */
struct igc_all_filter {
struct igc_ethertype_filter ethertype;
struct igc_ntuple_filter ntuple;
struct igc_syn_filter syn;
struct igc_rss_filter rss;
uint32_t mask; /* see IGC_FILTER_MASK_* definition */
};
#define IGC_FILTER_MASK_ETHER (1u << IGC_FILTER_TYPE_ETHERTYPE)
#define IGC_FILTER_MASK_NTUPLE (1u << IGC_FILTER_TYPE_NTUPLE)
#define IGC_FILTER_MASK_TCP_SYN (1u << IGC_FILTER_TYPE_SYN)
#define IGC_FILTER_MASK_RSS (1u << IGC_FILTER_TYPE_HASH)
#define IGC_FILTER_MASK_ALL (IGC_FILTER_MASK_ETHER | \
IGC_FILTER_MASK_NTUPLE | \
IGC_FILTER_MASK_TCP_SYN | \
IGC_FILTER_MASK_RSS)
#define IGC_SET_FILTER_MASK(_filter, _mask_bits) \
((_filter)->mask &= (_mask_bits))
#define IGC_IS_ALL_BITS_SET(_val) ((_val) == (typeof(_val))~0)
#define IGC_NOT_ALL_BITS_SET(_val) ((_val) != (typeof(_val))~0)
/* Parse rule attribute */
static int
igc_parse_attribute(const struct rte_flow_attr *attr,
struct igc_all_filter *filter, struct rte_flow_error *error)
{
if (!attr)
return 0;
if (attr->group)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_GROUP, attr,
"Not support");
if (attr->egress)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, attr,
"Not support");
if (attr->transfer)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER, attr,
"Not support");
if (!attr->ingress)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, attr,
"A rule must apply to ingress traffic");
if (attr->priority == 0)
return 0;
/* only n-tuple and SYN filter have priority level */
IGC_SET_FILTER_MASK(filter,
IGC_FILTER_MASK_NTUPLE | IGC_FILTER_MASK_TCP_SYN);
if (IGC_IS_ALL_BITS_SET(attr->priority)) {
/* only SYN filter match this value */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_TCP_SYN);
filter->syn.hig_pri = 1;
return 0;
}
if (attr->priority > IGC_NTUPLE_MAX_PRI)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, attr,
"Priority value is invalid.");
if (attr->priority > 1) {
/* only n-tuple filter match this value */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
/* get priority */
filter->ntuple.tuple_info.priority = (uint8_t)attr->priority;
return 0;
}
/* get priority */
filter->ntuple.tuple_info.priority = (uint8_t)attr->priority;
filter->syn.hig_pri = (uint8_t)attr->priority;
return 0;
}
/* function type of parse pattern */
typedef int (*igc_pattern_parse)(const struct rte_flow_item *,
struct igc_all_filter *, struct rte_flow_error *);
static int igc_parse_pattern_void(__rte_unused const struct rte_flow_item *item,
__rte_unused struct igc_all_filter *filter,
__rte_unused struct rte_flow_error *error);
static int igc_parse_pattern_ether(const struct rte_flow_item *item,
struct igc_all_filter *filter, struct rte_flow_error *error);
static int igc_parse_pattern_ip(const struct rte_flow_item *item,
struct igc_all_filter *filter, struct rte_flow_error *error);
static int igc_parse_pattern_ipv6(const struct rte_flow_item *item,
struct igc_all_filter *filter, struct rte_flow_error *error);
static int igc_parse_pattern_udp(const struct rte_flow_item *item,
struct igc_all_filter *filter, struct rte_flow_error *error);
static int igc_parse_pattern_tcp(const struct rte_flow_item *item,
struct igc_all_filter *filter, struct rte_flow_error *error);
static igc_pattern_parse pattern_parse_list[] = {
[RTE_FLOW_ITEM_TYPE_VOID] = igc_parse_pattern_void,
[RTE_FLOW_ITEM_TYPE_ETH] = igc_parse_pattern_ether,
[RTE_FLOW_ITEM_TYPE_IPV4] = igc_parse_pattern_ip,
[RTE_FLOW_ITEM_TYPE_IPV6] = igc_parse_pattern_ipv6,
[RTE_FLOW_ITEM_TYPE_UDP] = igc_parse_pattern_udp,
[RTE_FLOW_ITEM_TYPE_TCP] = igc_parse_pattern_tcp,
};
/* Parse rule patterns */
static int
igc_parse_patterns(const struct rte_flow_item patterns[],
struct igc_all_filter *filter, struct rte_flow_error *error)
{
const struct rte_flow_item *item = patterns;
if (item == NULL) {
/* only RSS filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_RSS);
return 0;
}
for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
int ret;
if (item->type >= RTE_DIM(pattern_parse_list))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Not been supported");
if (item->last)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_LAST, item,
"Range not been supported");
/* check pattern format is valid */
if (!!item->spec ^ !!item->mask)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Format error");
/* get the pattern type callback */
igc_pattern_parse parse_func =
pattern_parse_list[item->type];
if (!parse_func)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Not been supported");
/* call the pattern type function */
ret = parse_func(item, filter, error);
if (ret)
return ret;
/* if no filter match the pattern */
if (filter->mask == 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Not been supported");
}
return 0;
}
static int igc_parse_action_queue(struct rte_eth_dev *dev,
const struct rte_flow_action *act,
struct igc_all_filter *filter, struct rte_flow_error *error);
static int igc_parse_action_rss(struct rte_eth_dev *dev,
const struct rte_flow_action *act,
struct igc_all_filter *filter, struct rte_flow_error *error);
/* Parse flow actions */
static int
igc_parse_actions(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_action *act = actions;
int ret;
if (act == NULL)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_NUM, act,
"Action is needed");
for (; act->type != RTE_FLOW_ACTION_TYPE_END; act++) {
switch (act->type) {
case RTE_FLOW_ACTION_TYPE_QUEUE:
ret = igc_parse_action_queue(dev, act, filter, error);
if (ret)
return ret;
break;
case RTE_FLOW_ACTION_TYPE_RSS:
ret = igc_parse_action_rss(dev, act, filter, error);
if (ret)
return ret;
break;
case RTE_FLOW_ACTION_TYPE_VOID:
break;
default:
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, act,
"Not been supported");
}
/* if no filter match the action */
if (filter->mask == 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, act,
"Not been supported");
}
return 0;
}
/* Parse a flow rule */
static int
igc_parse_flow(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item patterns[],
const struct rte_flow_action actions[],
struct rte_flow_error *error,
struct igc_all_filter *filter)
{
int ret;
/* clear all filters */
memset(filter, 0, sizeof(*filter));
/* set default filter mask */
filter->mask = IGC_FILTER_MASK_ALL;
ret = igc_parse_attribute(attr, filter, error);
if (ret)
return ret;
ret = igc_parse_patterns(patterns, filter, error);
if (ret)
return ret;
ret = igc_parse_actions(dev, actions, filter, error);
if (ret)
return ret;
/* if no or more than one filter matched this flow */
if (filter->mask == 0 || (filter->mask & (filter->mask - 1)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, NULL,
"Flow can't be recognized");
return 0;
}
/* Parse pattern type of void */
static int
igc_parse_pattern_void(__rte_unused const struct rte_flow_item *item,
__rte_unused struct igc_all_filter *filter,
__rte_unused struct rte_flow_error *error)
{
return 0;
}
/* Parse pattern type of ethernet header */
static int
igc_parse_pattern_ether(const struct rte_flow_item *item,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_item_eth *spec = item->spec;
const struct rte_flow_item_eth *mask = item->mask;
struct igc_ethertype_filter *ether;
if (mask == NULL) {
/* only n-tuple and SYN filter match the pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE |
IGC_FILTER_MASK_TCP_SYN);
return 0;
}
/* only ether-type filter match the pattern*/
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_ETHER);
/* destination and source MAC address are not supported */
if (!rte_is_zero_ether_addr(&mask->src) ||
!rte_is_zero_ether_addr(&mask->dst))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"Only support ether-type");
/* ether-type mask bits must be all 1 */
if (IGC_NOT_ALL_BITS_SET(mask->type))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"Ethernet type mask bits must be all 1");
ether = &filter->ethertype;
/* get ether-type */
ether->ether_type = rte_be_to_cpu_16(spec->type);
/* ether-type should not be IPv4 and IPv6 */
if (ether->ether_type == RTE_ETHER_TYPE_IPV4 ||
ether->ether_type == RTE_ETHER_TYPE_IPV6 ||
ether->ether_type == 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, NULL,
"IPv4/IPv6/0 not supported by ethertype filter");
return 0;
}
/* Parse pattern type of IP */
static int
igc_parse_pattern_ip(const struct rte_flow_item *item,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_item_ipv4 *spec = item->spec;
const struct rte_flow_item_ipv4 *mask = item->mask;
if (mask == NULL) {
/* only n-tuple and SYN filter match this pattern */
IGC_SET_FILTER_MASK(filter,
IGC_FILTER_MASK_NTUPLE | IGC_FILTER_MASK_TCP_SYN);
return 0;
}
/* only n-tuple filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
/* only protocol is used */
if (mask->hdr.version_ihl ||
mask->hdr.type_of_service ||
mask->hdr.total_length ||
mask->hdr.packet_id ||
mask->hdr.fragment_offset ||
mask->hdr.time_to_live ||
mask->hdr.hdr_checksum ||
mask->hdr.dst_addr ||
mask->hdr.src_addr)
return rte_flow_error_set(error,
EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"IPv4 only support protocol");
if (mask->hdr.next_proto_id == 0)
return 0;
if (IGC_NOT_ALL_BITS_SET(mask->hdr.next_proto_id))
return rte_flow_error_set(error,
EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"IPv4 protocol mask bits must be all 0 or 1");
/* get protocol type */
filter->ntuple.tuple_info.proto_mask = 1;
filter->ntuple.tuple_info.proto = spec->hdr.next_proto_id;
return 0;
}
/*
* Check ipv6 address is 0
* Return 1 if true, 0 for false.
*/
static inline bool
igc_is_zero_ipv6_addr(const void *ipv6_addr)
{
const uint64_t *ddw = ipv6_addr;
return ddw[0] == 0 && ddw[1] == 0;
}
/* Parse pattern type of IPv6 */
static int
igc_parse_pattern_ipv6(const struct rte_flow_item *item,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_item_ipv6 *spec = item->spec;
const struct rte_flow_item_ipv6 *mask = item->mask;
if (mask == NULL) {
/* only n-tuple and syn filter match this pattern */
IGC_SET_FILTER_MASK(filter,
IGC_FILTER_MASK_NTUPLE | IGC_FILTER_MASK_TCP_SYN);
return 0;
}
/* only n-tuple filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
/* only protocol is used */
if (mask->hdr.vtc_flow ||
mask->hdr.payload_len ||
mask->hdr.hop_limits ||
!igc_is_zero_ipv6_addr(mask->hdr.src_addr) ||
!igc_is_zero_ipv6_addr(mask->hdr.dst_addr))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"IPv6 only support protocol");
if (mask->hdr.proto == 0)
return 0;
if (IGC_NOT_ALL_BITS_SET(mask->hdr.proto))
return rte_flow_error_set(error,
EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"IPv6 protocol mask bits must be all 0 or 1");
/* get protocol type */
filter->ntuple.tuple_info.proto_mask = 1;
filter->ntuple.tuple_info.proto = spec->hdr.proto;
return 0;
}
/* Parse pattern type of UDP */
static int
igc_parse_pattern_udp(const struct rte_flow_item *item,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_item_udp *spec = item->spec;
const struct rte_flow_item_udp *mask = item->mask;
/* only n-tuple filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
if (mask == NULL)
return 0;
/* only destination port is used */
if (mask->hdr.dgram_len || mask->hdr.dgram_cksum || mask->hdr.src_port)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"UDP only support destination port");
if (mask->hdr.dst_port == 0)
return 0;
if (IGC_NOT_ALL_BITS_SET(mask->hdr.dst_port))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"UDP port mask bits must be all 0 or 1");
/* get destination port info. */
filter->ntuple.tuple_info.dst_port_mask = 1;
filter->ntuple.tuple_info.dst_port = spec->hdr.dst_port;
return 0;
}
/* Parse pattern type of TCP */
static int
igc_parse_pattern_tcp(const struct rte_flow_item *item,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_item_tcp *spec = item->spec;
const struct rte_flow_item_tcp *mask = item->mask;
struct igc_ntuple_info *tuple_info = &filter->ntuple.tuple_info;
if (mask == NULL) {
/* only n-tuple filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
return 0;
}
/* only n-tuple and SYN filter match this pattern */
IGC_SET_FILTER_MASK(filter,
IGC_FILTER_MASK_NTUPLE | IGC_FILTER_MASK_TCP_SYN);
/* only destination port and TCP flags are used */
if (mask->hdr.sent_seq ||
mask->hdr.recv_ack ||
mask->hdr.data_off ||
mask->hdr.rx_win ||
mask->hdr.cksum ||
mask->hdr.tcp_urp ||
mask->hdr.src_port)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"TCP only support destination port and flags");
/* if destination port is used */
if (mask->hdr.dst_port) {
/* only n-tuple match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
if (IGC_NOT_ALL_BITS_SET(mask->hdr.dst_port))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"TCP port mask bits must be all 1");
/* get destination port info. */
tuple_info->dst_port = spec->hdr.dst_port;
tuple_info->dst_port_mask = 1;
}
/* if TCP flags are used */
if (mask->hdr.tcp_flags) {
if (IGC_IS_ALL_BITS_SET(mask->hdr.tcp_flags)) {
/* only n-tuple match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
/* get TCP flags */
tuple_info->tcp_flags = spec->hdr.tcp_flags;
} else if (mask->hdr.tcp_flags == RTE_TCP_SYN_FLAG) {
/* only TCP SYN filter match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_TCP_SYN);
} else {
/* no filter match this pattern */
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, item,
"TCP flags can't match");
}
} else {
/* only n-tuple match this pattern */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_NTUPLE);
}
return 0;
}
static int
igc_parse_action_queue(struct rte_eth_dev *dev,
const struct rte_flow_action *act,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
uint16_t queue_idx;
if (act->conf == NULL)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"NULL pointer");
/* only ether-type, n-tuple, SYN filter match the action */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_ETHER |
IGC_FILTER_MASK_NTUPLE | IGC_FILTER_MASK_TCP_SYN);
/* get queue index */
queue_idx = ((const struct rte_flow_action_queue *)act->conf)->index;
/* check the queue index is valid */
if (queue_idx >= dev->data->nb_rx_queues)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"Queue id is invalid");
/* get queue info. */
filter->ethertype.queue = queue_idx;
filter->ntuple.queue = queue_idx;
filter->syn.queue = queue_idx;
return 0;
}
/* Parse action of RSS */
static int
igc_parse_action_rss(struct rte_eth_dev *dev,
const struct rte_flow_action *act,
struct igc_all_filter *filter,
struct rte_flow_error *error)
{
const struct rte_flow_action_rss *rss = act->conf;
uint32_t i;
if (act->conf == NULL)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"NULL pointer");
/* only RSS match the action */
IGC_SET_FILTER_MASK(filter, IGC_FILTER_MASK_RSS);
/* RSS redirect table can't be zero and can't exceed 128 */
if (!rss || !rss->queue_num || rss->queue_num > IGC_RSS_RDT_SIZD)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"No valid queues");
/* queue index can't exceed max queue index */
for (i = 0; i < rss->queue_num; i++) {
if (rss->queue[i] >= dev->data->nb_rx_queues)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"Queue id is invalid");
}
/* only default RSS hash function is supported */
if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"Only default RSS hash functions is supported");
if (rss->level)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"Only 0 RSS encapsulation level is supported");
/* check key length is valid */
if (rss->key_len && rss->key_len != sizeof(filter->rss.key))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, act,
"RSS hash key must be exactly 40 bytes");
/* get RSS info. */
igc_rss_conf_set(&filter->rss, rss);
return 0;
}
/**
* Allocate a rte_flow from the heap
* Return the pointer of the flow, or NULL for failed
**/
static inline struct rte_flow *
igc_alloc_flow(const void *filter, enum igc_filter_type type, size_t inbytes)
{
/* allocate memory, 8 bytes boundary aligned */
struct rte_flow *flow = rte_malloc("igc flow filter",
sizeof(struct rte_flow) + inbytes, 8);
if (flow == NULL) {
PMD_DRV_LOG(ERR, "failed to allocate memory");
return NULL;
}
flow->filter_type = type;
/* copy filter data */
memcpy(flow->filter, filter, inbytes);
return flow;
}
/* Append a rte_flow to the list */
static inline void
igc_append_flow(struct igc_flow_list *list, struct rte_flow *flow)
{
TAILQ_INSERT_TAIL(list, flow, node);
}
/**
* Remove the flow and free the flow buffer
* The caller should make sure the flow is really exist in the list
**/
static inline void
igc_remove_flow(struct igc_flow_list *list, struct rte_flow *flow)
{
TAILQ_REMOVE(list, flow, node);
rte_free(flow);
}
/* Check whether the flow is really in the list or not */
static inline bool
igc_is_flow_in_list(struct igc_flow_list *list, struct rte_flow *flow)
{
struct rte_flow *it;
TAILQ_FOREACH(it, list, node) {
if (it == flow)
return true;
}
return false;
}
/**
* Create a flow rule.
* Theoretically one rule can match more than one filters.
* We will let it use the filter which it hit first.
* So, the sequence matters.
**/
static struct rte_flow *
igc_flow_create(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item patterns[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct rte_flow *flow = NULL;
struct igc_all_filter filter;
int ret;
ret = igc_parse_flow(dev, attr, patterns, actions, error, &filter);
if (ret)
return NULL;
ret = -ENOMEM;
switch (filter.mask) {
case IGC_FILTER_MASK_ETHER:
flow = igc_alloc_flow(&filter.ethertype,
IGC_FILTER_TYPE_ETHERTYPE,
sizeof(filter.ethertype));
if (flow)
ret = igc_add_ethertype_filter(dev, &filter.ethertype);
break;
case IGC_FILTER_MASK_NTUPLE:
/* Check n-tuple filter is valid */
if (filter.ntuple.tuple_info.dst_port_mask == 0 &&
filter.ntuple.tuple_info.proto_mask == 0) {
rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_NONE, NULL,
"Flow can't be recognized");
return NULL;
}
flow = igc_alloc_flow(&filter.ntuple, IGC_FILTER_TYPE_NTUPLE,
sizeof(filter.ntuple));
if (flow)
ret = igc_add_ntuple_filter(dev, &filter.ntuple);
break;
case IGC_FILTER_MASK_TCP_SYN:
flow = igc_alloc_flow(&filter.syn, IGC_FILTER_TYPE_SYN,
sizeof(filter.syn));
if (flow)
ret = igc_set_syn_filter(dev, &filter.syn);
break;
case IGC_FILTER_MASK_RSS:
flow = igc_alloc_flow(&filter.rss, IGC_FILTER_TYPE_HASH,
sizeof(filter.rss));
if (flow) {
struct igc_rss_filter *rss =
(struct igc_rss_filter *)flow->filter;
rss->conf.key = rss->key;
rss->conf.queue = rss->queue;
ret = igc_add_rss_filter(dev, &filter.rss);
}
break;
default:
rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_NONE, NULL,
"Flow can't be recognized");
return NULL;
}
if (ret) {
/* check and free the memory */
if (flow)
rte_free(flow);
rte_flow_error_set(error, -ret,
RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
"Failed to create flow.");
return NULL;
}
/* append the flow to the tail of the list */
igc_append_flow(IGC_DEV_PRIVATE_FLOW_LIST(dev), flow);
return flow;
}
/**
* Check if the flow rule is supported by the device.
* It only checks the format. Don't guarantee the rule can be programmed into
* the HW. Because there can be no enough room for the rule.
**/
static int
igc_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item patterns[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct igc_all_filter filter;
int ret;
ret = igc_parse_flow(dev, attr, patterns, actions, error, &filter);
if (ret)
return ret;
switch (filter.mask) {
case IGC_FILTER_MASK_NTUPLE:
/* Check n-tuple filter is valid */
if (filter.ntuple.tuple_info.dst_port_mask == 0 &&
filter.ntuple.tuple_info.proto_mask == 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_NONE, NULL,
"Flow can't be recognized");
break;
}
return 0;
}
/**
* Disable a valid flow, the flow must be not NULL and
* chained in the device flow list.
**/
static int
igc_disable_flow(struct rte_eth_dev *dev, struct rte_flow *flow)
{
int ret = 0;
switch (flow->filter_type) {
case IGC_FILTER_TYPE_ETHERTYPE:
ret = igc_del_ethertype_filter(dev,
(struct igc_ethertype_filter *)&flow->filter);
break;
case IGC_FILTER_TYPE_NTUPLE:
ret = igc_del_ntuple_filter(dev,
(struct igc_ntuple_filter *)&flow->filter);
break;
case IGC_FILTER_TYPE_SYN:
igc_clear_syn_filter(dev);
break;
case IGC_FILTER_TYPE_HASH:
ret = igc_del_rss_filter(dev);
break;
default:
PMD_DRV_LOG(ERR, "Filter type (%d) not supported",
flow->filter_type);
ret = -EINVAL;
}
return ret;
}
/* Destroy a flow rule */
static int
igc_flow_destroy(struct rte_eth_dev *dev,
struct rte_flow *flow,
struct rte_flow_error *error)
{
struct igc_flow_list *list = IGC_DEV_PRIVATE_FLOW_LIST(dev);
int ret;
if (!flow) {
PMD_DRV_LOG(ERR, "NULL flow!");
return -EINVAL;
}
/* check the flow is create by IGC PMD */
if (!igc_is_flow_in_list(list, flow)) {
PMD_DRV_LOG(ERR, "Flow(%p) not been found!", flow);
return -ENOENT;
}
ret = igc_disable_flow(dev, flow);
if (ret)
rte_flow_error_set(error, -ret,
RTE_FLOW_ERROR_TYPE_HANDLE,
NULL, "Failed to destroy flow");
igc_remove_flow(list, flow);
return ret;
}
/* Initiate device flow list header */
void
igc_flow_init(struct rte_eth_dev *dev)
{
TAILQ_INIT(IGC_DEV_PRIVATE_FLOW_LIST(dev));
}
/* Destroy all flow in the list and free memory */
int
igc_flow_flush(struct rte_eth_dev *dev,
__rte_unused struct rte_flow_error *error)
{
struct igc_flow_list *list = IGC_DEV_PRIVATE_FLOW_LIST(dev);
struct rte_flow *flow;
while ((flow = TAILQ_FIRST(list)) != NULL) {
igc_disable_flow(dev, flow);
igc_remove_flow(list, flow);
}
return 0;
}
const struct rte_flow_ops igc_flow_ops = {
.validate = igc_flow_validate,
.create = igc_flow_create,
.destroy = igc_flow_destroy,
.flush = igc_flow_flush,
};
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