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numam-dpdk/drivers/net/mlx5/mlx5_flow.c
Dekel Peled b1d63d8293 net/mlx5: support RSS on src or dst fields only 
This patch implements the feature described in RFC [1], adding
support of RSS action on L3 and/or L4 source or destination only.

[1] http://mails.dpdk.org/archives/dev/2019-December/152796.html

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
2020-01-17 19:46:01 +01:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2016 6WIND S.A.
* Copyright 2016 Mellanox Technologies, Ltd
*/
#include <netinet/in.h>
#include <sys/queue.h>
#include <stdalign.h>
#include <stdint.h>
#include <string.h>
/* Verbs header. */
/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <infiniband/verbs.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
#include <rte_common.h>
#include <rte_ether.h>
#include <rte_ethdev_driver.h>
#include <rte_flow.h>
#include <rte_flow_driver.h>
#include <rte_malloc.h>
#include <rte_ip.h>
#include "mlx5.h"
#include "mlx5_defs.h"
#include "mlx5_flow.h"
#include "mlx5_glue.h"
#include "mlx5_prm.h"
#include "mlx5_rxtx.h"
/* Dev ops structure defined in mlx5.c */
extern const struct eth_dev_ops mlx5_dev_ops;
extern const struct eth_dev_ops mlx5_dev_ops_isolate;
/** Device flow drivers. */
#ifdef HAVE_IBV_FLOW_DV_SUPPORT
extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
#endif
extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
[MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
#ifdef HAVE_IBV_FLOW_DV_SUPPORT
[MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
#endif
[MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
[MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
};
enum mlx5_expansion {
MLX5_EXPANSION_ROOT,
MLX5_EXPANSION_ROOT_OUTER,
MLX5_EXPANSION_ROOT_ETH_VLAN,
MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
MLX5_EXPANSION_OUTER_ETH,
MLX5_EXPANSION_OUTER_ETH_VLAN,
MLX5_EXPANSION_OUTER_VLAN,
MLX5_EXPANSION_OUTER_IPV4,
MLX5_EXPANSION_OUTER_IPV4_UDP,
MLX5_EXPANSION_OUTER_IPV4_TCP,
MLX5_EXPANSION_OUTER_IPV6,
MLX5_EXPANSION_OUTER_IPV6_UDP,
MLX5_EXPANSION_OUTER_IPV6_TCP,
MLX5_EXPANSION_VXLAN,
MLX5_EXPANSION_VXLAN_GPE,
MLX5_EXPANSION_GRE,
MLX5_EXPANSION_MPLS,
MLX5_EXPANSION_ETH,
MLX5_EXPANSION_ETH_VLAN,
MLX5_EXPANSION_VLAN,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV4_UDP,
MLX5_EXPANSION_IPV4_TCP,
MLX5_EXPANSION_IPV6,
MLX5_EXPANSION_IPV6_UDP,
MLX5_EXPANSION_IPV6_TCP,
};
/** Supported expansion of items. */
static const struct rte_flow_expand_node mlx5_support_expansion[] = {
[MLX5_EXPANSION_ROOT] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_END,
},
[MLX5_EXPANSION_ROOT_OUTER] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
MLX5_EXPANSION_OUTER_IPV4,
MLX5_EXPANSION_OUTER_IPV6),
.type = RTE_FLOW_ITEM_TYPE_END,
},
[MLX5_EXPANSION_ROOT_ETH_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
.type = RTE_FLOW_ITEM_TYPE_END,
},
[MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
.type = RTE_FLOW_ITEM_TYPE_END,
},
[MLX5_EXPANSION_OUTER_ETH] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
MLX5_EXPANSION_OUTER_IPV6,
MLX5_EXPANSION_MPLS),
.type = RTE_FLOW_ITEM_TYPE_ETH,
.rss_types = 0,
},
[MLX5_EXPANSION_OUTER_ETH_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
.type = RTE_FLOW_ITEM_TYPE_ETH,
.rss_types = 0,
},
[MLX5_EXPANSION_OUTER_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
MLX5_EXPANSION_OUTER_IPV6),
.type = RTE_FLOW_ITEM_TYPE_VLAN,
},
[MLX5_EXPANSION_OUTER_IPV4] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT
(MLX5_EXPANSION_OUTER_IPV4_UDP,
MLX5_EXPANSION_OUTER_IPV4_TCP,
MLX5_EXPANSION_GRE,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_IPV4,
.rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
ETH_RSS_NONFRAG_IPV4_OTHER,
},
[MLX5_EXPANSION_OUTER_IPV4_UDP] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
MLX5_EXPANSION_VXLAN_GPE),
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
},
[MLX5_EXPANSION_OUTER_IPV4_TCP] = {
.type = RTE_FLOW_ITEM_TYPE_TCP,
.rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
},
[MLX5_EXPANSION_OUTER_IPV6] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT
(MLX5_EXPANSION_OUTER_IPV6_UDP,
MLX5_EXPANSION_OUTER_IPV6_TCP,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_IPV6,
.rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
ETH_RSS_NONFRAG_IPV6_OTHER,
},
[MLX5_EXPANSION_OUTER_IPV6_UDP] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
MLX5_EXPANSION_VXLAN_GPE),
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
},
[MLX5_EXPANSION_OUTER_IPV6_TCP] = {
.type = RTE_FLOW_ITEM_TYPE_TCP,
.rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
},
[MLX5_EXPANSION_VXLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
.type = RTE_FLOW_ITEM_TYPE_VXLAN,
},
[MLX5_EXPANSION_VXLAN_GPE] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
},
[MLX5_EXPANSION_GRE] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
.type = RTE_FLOW_ITEM_TYPE_GRE,
},
[MLX5_EXPANSION_MPLS] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_MPLS,
},
[MLX5_EXPANSION_ETH] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_ETH,
},
[MLX5_EXPANSION_ETH_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
.type = RTE_FLOW_ITEM_TYPE_ETH,
},
[MLX5_EXPANSION_VLAN] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
.type = RTE_FLOW_ITEM_TYPE_VLAN,
},
[MLX5_EXPANSION_IPV4] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
MLX5_EXPANSION_IPV4_TCP),
.type = RTE_FLOW_ITEM_TYPE_IPV4,
.rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
ETH_RSS_NONFRAG_IPV4_OTHER,
},
[MLX5_EXPANSION_IPV4_UDP] = {
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
},
[MLX5_EXPANSION_IPV4_TCP] = {
.type = RTE_FLOW_ITEM_TYPE_TCP,
.rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
},
[MLX5_EXPANSION_IPV6] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
MLX5_EXPANSION_IPV6_TCP),
.type = RTE_FLOW_ITEM_TYPE_IPV6,
.rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
ETH_RSS_NONFRAG_IPV6_OTHER,
},
[MLX5_EXPANSION_IPV6_UDP] = {
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
},
[MLX5_EXPANSION_IPV6_TCP] = {
.type = RTE_FLOW_ITEM_TYPE_TCP,
.rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
},
};
static const struct rte_flow_ops mlx5_flow_ops = {
.validate = mlx5_flow_validate,
.create = mlx5_flow_create,
.destroy = mlx5_flow_destroy,
.flush = mlx5_flow_flush,
.isolate = mlx5_flow_isolate,
.query = mlx5_flow_query,
};
/* Convert FDIR request to Generic flow. */
struct mlx5_fdir {
struct rte_flow_attr attr;
struct rte_flow_item items[4];
struct rte_flow_item_eth l2;
struct rte_flow_item_eth l2_mask;
union {
struct rte_flow_item_ipv4 ipv4;
struct rte_flow_item_ipv6 ipv6;
} l3;
union {
struct rte_flow_item_ipv4 ipv4;
struct rte_flow_item_ipv6 ipv6;
} l3_mask;
union {
struct rte_flow_item_udp udp;
struct rte_flow_item_tcp tcp;
} l4;
union {
struct rte_flow_item_udp udp;
struct rte_flow_item_tcp tcp;
} l4_mask;
struct rte_flow_action actions[2];
struct rte_flow_action_queue queue;
};
/* Map of Verbs to Flow priority with 8 Verbs priorities. */
static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
{ 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
};
/* Map of Verbs to Flow priority with 16 Verbs priorities. */
static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
{ 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
{ 9, 10, 11 }, { 12, 13, 14 },
};
/* Tunnel information. */
struct mlx5_flow_tunnel_info {
uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
};
static struct mlx5_flow_tunnel_info tunnels_info[] = {
{
.tunnel = MLX5_FLOW_LAYER_VXLAN,
.ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
},
{
.tunnel = MLX5_FLOW_LAYER_GENEVE,
.ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
},
{
.tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
.ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
},
{
.tunnel = MLX5_FLOW_LAYER_GRE,
.ptype = RTE_PTYPE_TUNNEL_GRE,
},
{
.tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
.ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
},
{
.tunnel = MLX5_FLOW_LAYER_MPLS,
.ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
},
{
.tunnel = MLX5_FLOW_LAYER_NVGRE,
.ptype = RTE_PTYPE_TUNNEL_NVGRE,
},
{
.tunnel = MLX5_FLOW_LAYER_IPIP,
.ptype = RTE_PTYPE_TUNNEL_IP,
},
{
.tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
.ptype = RTE_PTYPE_TUNNEL_IP,
},
};
/**
* Translate tag ID to register.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] feature
* The feature that request the register.
* @param[in] id
* The request register ID.
* @param[out] error
* Error description in case of any.
*
* @return
* The request register on success, a negative errno
* value otherwise and rte_errno is set.
*/
enum modify_reg
mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
enum mlx5_feature_name feature,
uint32_t id,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
enum modify_reg start_reg;
switch (feature) {
case MLX5_HAIRPIN_RX:
return REG_B;
case MLX5_HAIRPIN_TX:
return REG_A;
case MLX5_METADATA_RX:
switch (config->dv_xmeta_en) {
case MLX5_XMETA_MODE_LEGACY:
return REG_B;
case MLX5_XMETA_MODE_META16:
return REG_C_0;
case MLX5_XMETA_MODE_META32:
return REG_C_1;
}
break;
case MLX5_METADATA_TX:
return REG_A;
case MLX5_METADATA_FDB:
switch (config->dv_xmeta_en) {
case MLX5_XMETA_MODE_LEGACY:
return REG_NONE;
case MLX5_XMETA_MODE_META16:
return REG_C_0;
case MLX5_XMETA_MODE_META32:
return REG_C_1;
}
break;
case MLX5_FLOW_MARK:
switch (config->dv_xmeta_en) {
case MLX5_XMETA_MODE_LEGACY:
return REG_NONE;
case MLX5_XMETA_MODE_META16:
return REG_C_1;
case MLX5_XMETA_MODE_META32:
return REG_C_0;
}
break;
case MLX5_COPY_MARK:
case MLX5_MTR_SFX:
/*
* Metadata COPY_MARK register using is in meter suffix sub
* flow while with meter. It's safe to share the same register.
*/
return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
case MLX5_MTR_COLOR:
RTE_ASSERT(priv->mtr_color_reg != REG_NONE);
return priv->mtr_color_reg;
case MLX5_APP_TAG:
/*
* If meter is enable, it will engage two registers for color
* match and flow match. If meter color match is not using the
* REG_C_2, need to skip the REG_C_x be used by meter color
* match.
* If meter is disable, free to use all available registers.
*/
if (priv->mtr_color_reg != REG_NONE)
start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_3 :
REG_C_4;
else
start_reg = REG_C_2;
if (id > (REG_C_7 - start_reg))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM,
NULL, "invalid tag id");
if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
NULL, "unsupported tag id");
/*
* This case means meter is using the REG_C_x great than 2.
* Take care not to conflict with meter color REG_C_x.
* If the available index REG_C_y >= REG_C_x, skip the
* color register.
*/
if (start_reg == REG_C_3 && config->flow_mreg_c
[id + REG_C_3 - REG_C_0] >= priv->mtr_color_reg) {
if (config->flow_mreg_c[id + 1 + REG_C_3 - REG_C_0] !=
REG_NONE)
return config->flow_mreg_c
[id + 1 + REG_C_3 - REG_C_0];
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
NULL, "unsupported tag id");
}
return config->flow_mreg_c[id + start_reg - REG_C_0];
}
assert(false);
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL, "invalid feature name");
}
/**
* Check extensive flow metadata register support.
*
* @param dev
* Pointer to rte_eth_dev structure.
*
* @return
* True if device supports extensive flow metadata register, otherwise false.
*/
bool
mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
/*
* Having available reg_c can be regarded inclusively as supporting
* extensive flow metadata register, which could mean,
* - metadata register copy action by modify header.
* - 16 modify header actions is supported.
* - reg_c's are preserved across different domain (FDB and NIC) on
* packet loopback by flow lookup miss.
*/
return config->flow_mreg_c[2] != REG_NONE;
}
/**
* Discover the maximum number of priority available.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
*
* @return
* number of supported flow priority on success, a negative errno
* value otherwise and rte_errno is set.
*/
int
mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct {
struct ibv_flow_attr attr;
struct ibv_flow_spec_eth eth;
struct ibv_flow_spec_action_drop drop;
} flow_attr = {
.attr = {
.num_of_specs = 2,
.port = (uint8_t)priv->ibv_port,
},
.eth = {
.type = IBV_FLOW_SPEC_ETH,
.size = sizeof(struct ibv_flow_spec_eth),
},
.drop = {
.size = sizeof(struct ibv_flow_spec_action_drop),
.type = IBV_FLOW_SPEC_ACTION_DROP,
},
};
struct ibv_flow *flow;
struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
uint16_t vprio[] = { 8, 16 };
int i;
int priority = 0;
if (!drop) {
rte_errno = ENOTSUP;
return -rte_errno;
}
for (i = 0; i != RTE_DIM(vprio); i++) {
flow_attr.attr.priority = vprio[i] - 1;
flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
if (!flow)
break;
claim_zero(mlx5_glue->destroy_flow(flow));
priority = vprio[i];
}
mlx5_hrxq_drop_release(dev);
switch (priority) {
case 8:
priority = RTE_DIM(priority_map_3);
break;
case 16:
priority = RTE_DIM(priority_map_5);
break;
default:
rte_errno = ENOTSUP;
DRV_LOG(ERR,
"port %u verbs maximum priority: %d expected 8/16",
dev->data->port_id, priority);
return -rte_errno;
}
DRV_LOG(INFO, "port %u flow maximum priority: %d",
dev->data->port_id, priority);
return priority;
}
/**
* Adjust flow priority based on the highest layer and the request priority.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] priority
* The rule base priority.
* @param[in] subpriority
* The priority based on the items.
*
* @return
* The new priority.
*/
uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
uint32_t subpriority)
{
uint32_t res = 0;
struct mlx5_priv *priv = dev->data->dev_private;
switch (priv->config.flow_prio) {
case RTE_DIM(priority_map_3):
res = priority_map_3[priority][subpriority];
break;
case RTE_DIM(priority_map_5):
res = priority_map_5[priority][subpriority];
break;
}
return res;
}
/**
* Verify the @p item specifications (spec, last, mask) are compatible with the
* NIC capabilities.
*
* @param[in] item
* Item specification.
* @param[in] mask
* @p item->mask or flow default bit-masks.
* @param[in] nic_mask
* Bit-masks covering supported fields by the NIC to compare with user mask.
* @param[in] size
* Bit-masks size in bytes.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_item_acceptable(const struct rte_flow_item *item,
const uint8_t *mask,
const uint8_t *nic_mask,
unsigned int size,
struct rte_flow_error *error)
{
unsigned int i;
assert(nic_mask);
for (i = 0; i < size; ++i)
if ((nic_mask[i] | mask[i]) != nic_mask[i])
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"mask enables non supported"
" bits");
if (!item->spec && (item->mask || item->last))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"mask/last without a spec is not"
" supported");
if (item->spec && item->last) {
uint8_t spec[size];
uint8_t last[size];
unsigned int i;
int ret;
for (i = 0; i < size; ++i) {
spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
last[i] = ((const uint8_t *)item->last)[i] & mask[i];
}
ret = memcmp(spec, last, size);
if (ret != 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"range is not valid");
}
return 0;
}
/**
* Adjust the hash fields according to the @p flow information.
*
* @param[in] dev_flow.
* Pointer to the mlx5_flow.
* @param[in] tunnel
* 1 when the hash field is for a tunnel item.
* @param[in] layer_types
* ETH_RSS_* types.
* @param[in] hash_fields
* Item hash fields.
*
* @return
* The hash fields that should be used.
*/
uint64_t
mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
int tunnel __rte_unused, uint64_t layer_types,
uint64_t hash_fields)
{
struct rte_flow *flow = dev_flow->flow;
#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
int rss_request_inner = flow->rss.level >= 2;
/* Check RSS hash level for tunnel. */
if (tunnel && rss_request_inner)
hash_fields |= IBV_RX_HASH_INNER;
else if (tunnel || rss_request_inner)
return 0;
#endif
/* Check if requested layer matches RSS hash fields. */
if (!(flow->rss.types & layer_types))
return 0;
return hash_fields;
}
/**
* Lookup and set the ptype in the data Rx part. A single Ptype can be used,
* if several tunnel rules are used on this queue, the tunnel ptype will be
* cleared.
*
* @param rxq_ctrl
* Rx queue to update.
*/
static void
flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
{
unsigned int i;
uint32_t tunnel_ptype = 0;
/* Look up for the ptype to use. */
for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
if (!rxq_ctrl->flow_tunnels_n[i])
continue;
if (!tunnel_ptype) {
tunnel_ptype = tunnels_info[i].ptype;
} else {
tunnel_ptype = 0;
break;
}
}
rxq_ctrl->rxq.tunnel = tunnel_ptype;
}
/**
* Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
* flow.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] dev_flow
* Pointer to device flow structure.
*/
static void
flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow = dev_flow->flow;
const int mark = !!(dev_flow->actions &
(MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
unsigned int i;
for (i = 0; i != flow->rss.queue_num; ++i) {
int idx = (*flow->rss.queue)[i];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of((*priv->rxqs)[idx],
struct mlx5_rxq_ctrl, rxq);
/*
* To support metadata register copy on Tx loopback,
* this must be always enabled (metadata may arive
* from other port - not from local flows only.
*/
if (priv->config.dv_flow_en &&
priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
mlx5_flow_ext_mreg_supported(dev)) {
rxq_ctrl->rxq.mark = 1;
rxq_ctrl->flow_mark_n = 1;
} else if (mark) {
rxq_ctrl->rxq.mark = 1;
rxq_ctrl->flow_mark_n++;
}
if (tunnel) {
unsigned int j;
/* Increase the counter matching the flow. */
for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
if ((tunnels_info[j].tunnel &
dev_flow->layers) ==
tunnels_info[j].tunnel) {
rxq_ctrl->flow_tunnels_n[j]++;
break;
}
}
flow_rxq_tunnel_ptype_update(rxq_ctrl);
}
}
}
/**
* Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] flow
* Pointer to flow structure.
*/
static void
flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
{
struct mlx5_flow *dev_flow;
LIST_FOREACH(dev_flow, &flow->dev_flows, next)
flow_drv_rxq_flags_set(dev, dev_flow);
}
/**
* Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
* device flow if no other flow uses it with the same kind of request.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] dev_flow
* Pointer to the device flow.
*/
static void
flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow = dev_flow->flow;
const int mark = !!(dev_flow->actions &
(MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
unsigned int i;
assert(dev->data->dev_started);
for (i = 0; i != flow->rss.queue_num; ++i) {
int idx = (*flow->rss.queue)[i];
struct mlx5_rxq_ctrl *rxq_ctrl =
container_of((*priv->rxqs)[idx],
struct mlx5_rxq_ctrl, rxq);
if (priv->config.dv_flow_en &&
priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
mlx5_flow_ext_mreg_supported(dev)) {
rxq_ctrl->rxq.mark = 1;
rxq_ctrl->flow_mark_n = 1;
} else if (mark) {
rxq_ctrl->flow_mark_n--;
rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
}
if (tunnel) {
unsigned int j;
/* Decrease the counter matching the flow. */
for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
if ((tunnels_info[j].tunnel &
dev_flow->layers) ==
tunnels_info[j].tunnel) {
rxq_ctrl->flow_tunnels_n[j]--;
break;
}
}
flow_rxq_tunnel_ptype_update(rxq_ctrl);
}
}
}
/**
* Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
* @p flow if no other flow uses it with the same kind of request.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] flow
* Pointer to the flow.
*/
static void
flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
{
struct mlx5_flow *dev_flow;
LIST_FOREACH(dev_flow, &flow->dev_flows, next)
flow_drv_rxq_flags_trim(dev, dev_flow);
}
/**
* Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
*
* @param dev
* Pointer to Ethernet device.
*/
static void
flow_rxq_flags_clear(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
unsigned int i;
for (i = 0; i != priv->rxqs_n; ++i) {
struct mlx5_rxq_ctrl *rxq_ctrl;
unsigned int j;
if (!(*priv->rxqs)[i])
continue;
rxq_ctrl = container_of((*priv->rxqs)[i],
struct mlx5_rxq_ctrl, rxq);
rxq_ctrl->flow_mark_n = 0;
rxq_ctrl->rxq.mark = 0;
for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
rxq_ctrl->flow_tunnels_n[j] = 0;
rxq_ctrl->rxq.tunnel = 0;
}
}
/*
* return a pointer to the desired action in the list of actions.
*
* @param[in] actions
* The list of actions to search the action in.
* @param[in] action
* The action to find.
*
* @return
* Pointer to the action in the list, if found. NULL otherwise.
*/
const struct rte_flow_action *
mlx5_flow_find_action(const struct rte_flow_action *actions,
enum rte_flow_action_type action)
{
if (actions == NULL)
return NULL;
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
if (actions->type == action)
return actions;
return NULL;
}
/*
* Validate the flag action.
*
* @param[in] action_flags
* Bit-fields that holds the actions detected until now.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_flag(uint64_t action_flags,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
if (action_flags & MLX5_FLOW_ACTION_DROP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't drop and flag in same flow");
if (action_flags & MLX5_FLOW_ACTION_MARK)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't mark and flag in same flow");
if (action_flags & MLX5_FLOW_ACTION_FLAG)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 flag"
" actions in same flow");
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"flag action not supported for "
"egress");
return 0;
}
/*
* Validate the mark action.
*
* @param[in] action
* Pointer to the queue action.
* @param[in] action_flags
* Bit-fields that holds the actions detected until now.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
uint64_t action_flags,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
const struct rte_flow_action_mark *mark = action->conf;
if (!mark)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION,
action,
"configuration cannot be null");
if (mark->id >= MLX5_FLOW_MARK_MAX)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&mark->id,
"mark id must in 0 <= id < "
RTE_STR(MLX5_FLOW_MARK_MAX));
if (action_flags & MLX5_FLOW_ACTION_DROP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't drop and mark in same flow");
if (action_flags & MLX5_FLOW_ACTION_FLAG)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't flag and mark in same flow");
if (action_flags & MLX5_FLOW_ACTION_MARK)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 mark actions in same"
" flow");
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"mark action not supported for "
"egress");
return 0;
}
/*
* Validate the drop action.
*
* @param[in] action_flags
* Bit-fields that holds the actions detected until now.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_drop(uint64_t action_flags,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
if (action_flags & MLX5_FLOW_ACTION_FLAG)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't drop and flag in same flow");
if (action_flags & MLX5_FLOW_ACTION_MARK)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't drop and mark in same flow");
if (action_flags & (MLX5_FLOW_FATE_ACTIONS |
MLX5_FLOW_FATE_ESWITCH_ACTIONS))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 fate actions in"
" same flow");
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"drop action not supported for "
"egress");
return 0;
}
/*
* Validate the queue action.
*
* @param[in] action
* Pointer to the queue action.
* @param[in] action_flags
* Bit-fields that holds the actions detected until now.
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
uint64_t action_flags,
struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_action_queue *queue = action->conf;
if (action_flags & MLX5_FLOW_FATE_ACTIONS)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 fate actions in"
" same flow");
if (!priv->rxqs_n)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
NULL, "No Rx queues configured");
if (queue->index >= priv->rxqs_n)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&queue->index,
"queue index out of range");
if (!(*priv->rxqs)[queue->index])
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&queue->index,
"queue is not configured");
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"queue action not supported for "
"egress");
return 0;
}
/*
* Validate the rss action.
*
* @param[in] action
* Pointer to the queue action.
* @param[in] action_flags
* Bit-fields that holds the actions detected until now.
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[in] item_flags
* Items that were detected.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
uint64_t action_flags,
struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
uint64_t item_flags,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_action_rss *rss = action->conf;
int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
unsigned int i;
if (action_flags & MLX5_FLOW_FATE_ACTIONS)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION, NULL,
"can't have 2 fate actions"
" in same flow");
if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->func,
"RSS hash function not supported");
#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
if (rss->level > 2)
#else
if (rss->level > 1)
#endif
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->level,
"tunnel RSS is not supported");
/* allow RSS key_len 0 in case of NULL (default) RSS key. */
if (rss->key_len == 0 && rss->key != NULL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->key_len,
"RSS hash key length 0");
if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->key_len,
"RSS hash key too small");
if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->key_len,
"RSS hash key too large");
if (rss->queue_num > priv->config.ind_table_max_size)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->queue_num,
"number of queues too large");
if (rss->types & MLX5_RSS_HF_MASK)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->types,
"some RSS protocols are not"
" supported");
if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
!(rss->types & ETH_RSS_IP))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
"L3 partial RSS requested but L3 RSS"
" type not specified");
if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
!(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
"L4 partial RSS requested but L4 RSS"
" type not specified");
if (!priv->rxqs_n)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
NULL, "No Rx queues configured");
if (!rss->queue_num)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
NULL, "No queues configured");
for (i = 0; i != rss->queue_num; ++i) {
if (rss->queue[i] >= priv->rxqs_n)
return rte_flow_error_set
(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->queue[i], "queue index out of range");
if (!(*priv->rxqs)[rss->queue[i]])
return rte_flow_error_set
(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
&rss->queue[i], "queue is not configured");
}
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"rss action not supported for "
"egress");
if (rss->level > 1 && !tunnel)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
"inner RSS is not supported for "
"non-tunnel flows");
return 0;
}
/*
* Validate the count action.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] attr
* Attributes of flow that includes this action.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
const struct rte_flow_attr *attr,
struct rte_flow_error *error)
{
if (attr->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"count action not supported for "
"egress");
return 0;
}
/**
* Verify the @p attributes will be correctly understood by the NIC and store
* them in the @p flow if everything is correct.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
* @param[in] attributes
* Pointer to flow attributes
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
const struct rte_flow_attr *attributes,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
uint32_t priority_max = priv->config.flow_prio - 1;
if (attributes->group)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
NULL, "groups is not supported");
if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
attributes->priority >= priority_max)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
NULL, "priority out of range");
if (attributes->egress)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
"egress is not supported");
if (attributes->transfer && !priv->config.dv_esw_en)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
NULL, "transfer is not supported");
if (!attributes->ingress)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
NULL,
"ingress attribute is mandatory");
return 0;
}
/**
* Validate ICMP6 item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
struct rte_flow_error *error)
{
const struct rte_flow_item_icmp6 *mask = item->mask;
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
MLX5_FLOW_LAYER_OUTER_L3_IPV6;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with ICMP6 layer");
if (!(item_flags & l3m))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"IPv6 is mandatory to filter on"
" ICMP6");
if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L4 layers not supported");
if (!mask)
mask = &rte_flow_item_icmp6_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_icmp6_mask,
sizeof(struct rte_flow_item_icmp6), error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate ICMP item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
struct rte_flow_error *error)
{
const struct rte_flow_item_icmp *mask = item->mask;
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
MLX5_FLOW_LAYER_OUTER_L3_IPV4;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with ICMP layer");
if (!(item_flags & l3m))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"IPv4 is mandatory to filter"
" on ICMP");
if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L4 layers not supported");
if (!mask)
mask = &rte_flow_item_icmp_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_icmp_mask,
sizeof(struct rte_flow_item_icmp), error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate Ethernet item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
uint64_t item_flags,
struct rte_flow_error *error)
{
const struct rte_flow_item_eth *mask = item->mask;
const struct rte_flow_item_eth nic_mask = {
.dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
.src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
.type = RTE_BE16(0xffff),
};
int ret;
int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
MLX5_FLOW_LAYER_OUTER_L2;
if (item_flags & ethm)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L2 layers not supported");
if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
(tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L2 layer should not follow "
"L3 layers");
if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
(tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L2 layer should not follow VLAN");
if (!mask)
mask = &rte_flow_item_eth_mask;
ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
(const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_eth),
error);
return ret;
}
/**
* Validate VLAN item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] dev
* Ethernet device flow is being created on.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
uint64_t item_flags,
struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
const struct rte_flow_item_vlan *spec = item->spec;
const struct rte_flow_item_vlan *mask = item->mask;
const struct rte_flow_item_vlan nic_mask = {
.tci = RTE_BE16(UINT16_MAX),
.inner_type = RTE_BE16(UINT16_MAX),
};
uint16_t vlan_tag = 0;
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
int ret;
const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
MLX5_FLOW_LAYER_INNER_L4) :
(MLX5_FLOW_LAYER_OUTER_L3 |
MLX5_FLOW_LAYER_OUTER_L4);
const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
MLX5_FLOW_LAYER_OUTER_VLAN;
if (item_flags & vlanm)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple VLAN layers not supported");
else if ((item_flags & l34m) != 0)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"VLAN cannot follow L3/L4 layer");
if (!mask)
mask = &rte_flow_item_vlan_mask;
ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
(const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_vlan),
error);
if (ret)
return ret;
if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
struct mlx5_priv *priv = dev->data->dev_private;
if (priv->vmwa_context) {
/*
* Non-NULL context means we have a virtual machine
* and SR-IOV enabled, we have to create VLAN interface
* to make hypervisor to setup E-Switch vport
* context correctly. We avoid creating the multiple
* VLAN interfaces, so we cannot support VLAN tag mask.
*/
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"VLAN tag mask is not"
" supported in virtual"
" environment");
}
}
if (spec) {
vlan_tag = spec->tci;
vlan_tag &= mask->tci;
}
/*
* From verbs perspective an empty VLAN is equivalent
* to a packet without VLAN layer.
*/
if (!vlan_tag)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
item->spec,
"VLAN cannot be empty");
return 0;
}
/**
* Validate IPV4 item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] acc_mask
* Acceptable mask, if NULL default internal default mask
* will be used to check whether item fields are supported.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
uint64_t item_flags,
uint64_t last_item,
uint16_t ether_type,
const struct rte_flow_item_ipv4 *acc_mask,
struct rte_flow_error *error)
{
const struct rte_flow_item_ipv4 *mask = item->mask;
const struct rte_flow_item_ipv4 *spec = item->spec;
const struct rte_flow_item_ipv4 nic_mask = {
.hdr = {
.src_addr = RTE_BE32(0xffffffff),
.dst_addr = RTE_BE32(0xffffffff),
.type_of_service = 0xff,
.next_proto_id = 0xff,
},
};
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
MLX5_FLOW_LAYER_OUTER_L3;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
uint8_t next_proto = 0xFF;
const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
MLX5_FLOW_LAYER_OUTER_VLAN |
MLX5_FLOW_LAYER_INNER_VLAN);
if ((last_item & l2_vlan) && ether_type &&
ether_type != RTE_ETHER_TYPE_IPV4)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"IPv4 cannot follow L2/VLAN layer "
"which ether type is not IPv4");
if (item_flags & MLX5_FLOW_LAYER_IPIP) {
if (mask && spec)
next_proto = mask->hdr.next_proto_id &
spec->hdr.next_proto_id;
if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"multiple tunnel "
"not supported");
}
if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"wrong tunnel type - IPv6 specified "
"but IPv4 item provided");
if (item_flags & l3m)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L3 layers not supported");
else if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 cannot follow an L4 layer.");
else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
!(item_flags & MLX5_FLOW_LAYER_INNER_L2))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 cannot follow an NVGRE layer.");
if (!mask)
mask = &rte_flow_item_ipv4_mask;
else if (mask->hdr.next_proto_id != 0 &&
mask->hdr.next_proto_id != 0xff)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
"partial mask is not supported"
" for protocol");
ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
acc_mask ? (const uint8_t *)acc_mask
: (const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_ipv4),
error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate IPV6 item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] acc_mask
* Acceptable mask, if NULL default internal default mask
* will be used to check whether item fields are supported.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
uint64_t item_flags,
uint64_t last_item,
uint16_t ether_type,
const struct rte_flow_item_ipv6 *acc_mask,
struct rte_flow_error *error)
{
const struct rte_flow_item_ipv6 *mask = item->mask;
const struct rte_flow_item_ipv6 *spec = item->spec;
const struct rte_flow_item_ipv6 nic_mask = {
.hdr = {
.src_addr =
"\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff",
.dst_addr =
"\xff\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff\xff\xff\xff\xff\xff\xff",
.vtc_flow = RTE_BE32(0xffffffff),
.proto = 0xff,
.hop_limits = 0xff,
},
};
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
MLX5_FLOW_LAYER_OUTER_L3;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
uint8_t next_proto = 0xFF;
const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
MLX5_FLOW_LAYER_OUTER_VLAN |
MLX5_FLOW_LAYER_INNER_VLAN);
if ((last_item & l2_vlan) && ether_type &&
ether_type != RTE_ETHER_TYPE_IPV6)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"IPv6 cannot follow L2/VLAN layer "
"which ether type is not IPv6");
if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
if (mask && spec)
next_proto = mask->hdr.proto & spec->hdr.proto;
if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"multiple tunnel "
"not supported");
}
if (item_flags & MLX5_FLOW_LAYER_IPIP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"wrong tunnel type - IPv4 specified "
"but IPv6 item provided");
if (item_flags & l3m)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L3 layers not supported");
else if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 cannot follow an L4 layer.");
else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
!(item_flags & MLX5_FLOW_LAYER_INNER_L2))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 cannot follow an NVGRE layer.");
if (!mask)
mask = &rte_flow_item_ipv6_mask;
ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
acc_mask ? (const uint8_t *)acc_mask
: (const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_ipv6),
error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate UDP item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[in] flow_mask
* mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
struct rte_flow_error *error)
{
const struct rte_flow_item_udp *mask = item->mask;
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
MLX5_FLOW_LAYER_OUTER_L3;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with UDP layer");
if (!(item_flags & l3m))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 is mandatory to filter on L4");
if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L4 layers not supported");
if (!mask)
mask = &rte_flow_item_udp_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_udp_mask,
sizeof(struct rte_flow_item_udp), error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate TCP item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
const struct rte_flow_item_tcp *flow_mask,
struct rte_flow_error *error)
{
const struct rte_flow_item_tcp *mask = item->mask;
const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
MLX5_FLOW_LAYER_OUTER_L3;
const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
MLX5_FLOW_LAYER_OUTER_L4;
int ret;
assert(flow_mask);
if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with TCP layer");
if (!(item_flags & l3m))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 is mandatory to filter on L4");
if (item_flags & l4m)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple L4 layers not supported");
if (!mask)
mask = &rte_flow_item_tcp_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)flow_mask,
sizeof(struct rte_flow_item_tcp), error);
if (ret < 0)
return ret;
return 0;
}
/**
* Validate VXLAN item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
uint64_t item_flags,
struct rte_flow_error *error)
{
const struct rte_flow_item_vxlan *spec = item->spec;
const struct rte_flow_item_vxlan *mask = item->mask;
int ret;
union vni {
uint32_t vlan_id;
uint8_t vni[4];
} id = { .vlan_id = 0, };
uint32_t vlan_id = 0;
if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
/*
* Verify only UDPv4 is present as defined in
* https://tools.ietf.org/html/rfc7348
*/
if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"no outer UDP layer found");
if (!mask)
mask = &rte_flow_item_vxlan_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_vxlan_mask,
sizeof(struct rte_flow_item_vxlan),
error);
if (ret < 0)
return ret;
if (spec) {
memcpy(&id.vni[1], spec->vni, 3);
vlan_id = id.vlan_id;
memcpy(&id.vni[1], mask->vni, 3);
vlan_id &= id.vlan_id;
}
/*
* Tunnel id 0 is equivalent as not adding a VXLAN layer, if
* only this layer is defined in the Verbs specification it is
* interpreted as wildcard and all packets will match this
* rule, if it follows a full stack layer (ex: eth / ipv4 /
* udp), all packets matching the layers before will also
* match this rule. To avoid such situation, VNI 0 is
* currently refused.
*/
if (!vlan_id)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"VXLAN vni cannot be 0");
if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"VXLAN tunnel must be fully defined");
return 0;
}
/**
* Validate VXLAN_GPE item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] priv
* Pointer to the private data structure.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
uint64_t item_flags,
struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_item_vxlan_gpe *spec = item->spec;
const struct rte_flow_item_vxlan_gpe *mask = item->mask;
int ret;
union vni {
uint32_t vlan_id;
uint8_t vni[4];
} id = { .vlan_id = 0, };
uint32_t vlan_id = 0;
if (!priv->config.l3_vxlan_en)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 VXLAN is not enabled by device"
" parameter and/or not configured in"
" firmware");
if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
/*
* Verify only UDPv4 is present as defined in
* https://tools.ietf.org/html/rfc7348
*/
if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"no outer UDP layer found");
if (!mask)
mask = &rte_flow_item_vxlan_gpe_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
sizeof(struct rte_flow_item_vxlan_gpe),
error);
if (ret < 0)
return ret;
if (spec) {
if (spec->protocol)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"VxLAN-GPE protocol"
" not supported");
memcpy(&id.vni[1], spec->vni, 3);
vlan_id = id.vlan_id;
memcpy(&id.vni[1], mask->vni, 3);
vlan_id &= id.vlan_id;
}
/*
* Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
* layer is defined in the Verbs specification it is interpreted as
* wildcard and all packets will match this rule, if it follows a full
* stack layer (ex: eth / ipv4 / udp), all packets matching the layers
* before will also match this rule. To avoid such situation, VNI 0
* is currently refused.
*/
if (!vlan_id)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"VXLAN-GPE vni cannot be 0");
if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"VXLAN-GPE tunnel must be fully"
" defined");
return 0;
}
/**
* Validate GRE Key item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit flags to mark detected items.
* @param[in] gre_item
* Pointer to gre_item
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
uint64_t item_flags,
const struct rte_flow_item *gre_item,
struct rte_flow_error *error)
{
const rte_be32_t *mask = item->mask;
int ret = 0;
rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
const struct rte_flow_item_gre *gre_spec;
const struct rte_flow_item_gre *gre_mask;
if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Multiple GRE key not support");
if (!(item_flags & MLX5_FLOW_LAYER_GRE))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"No preceding GRE header");
if (item_flags & MLX5_FLOW_LAYER_INNER)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"GRE key following a wrong item");
gre_mask = gre_item->mask;
if (!gre_mask)
gre_mask = &rte_flow_item_gre_mask;
gre_spec = gre_item->spec;
if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
!(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Key bit must be on");
if (!mask)
mask = &gre_key_default_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&gre_key_default_mask,
sizeof(rte_be32_t), error);
return ret;
}
/**
* Validate GRE item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit flags to mark detected items.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
struct rte_flow_error *error)
{
const struct rte_flow_item_gre *spec __rte_unused = item->spec;
const struct rte_flow_item_gre *mask = item->mask;
int ret;
const struct rte_flow_item_gre nic_mask = {
.c_rsvd0_ver = RTE_BE16(0xB000),
.protocol = RTE_BE16(UINT16_MAX),
};
if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with this GRE layer");
if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 Layer is missing");
if (!mask)
mask = &rte_flow_item_gre_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_gre), error);
if (ret < 0)
return ret;
#ifndef HAVE_MLX5DV_DR
#ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
if (spec && (spec->protocol & mask->protocol))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"without MPLS support the"
" specification cannot be used for"
" filtering");
#endif
#endif
return 0;
}
/**
* Validate Geneve item.
*
* @param[in] item
* Item specification.
* @param[in] itemFlags
* Bit-fields that holds the items detected until now.
* @param[in] enPriv
* Pointer to the private data structure.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
uint64_t item_flags,
struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_item_geneve *spec = item->spec;
const struct rte_flow_item_geneve *mask = item->mask;
int ret;
uint16_t gbhdr;
uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
const struct rte_flow_item_geneve nic_mask = {
.ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
.vni = "\xff\xff\xff",
.protocol = RTE_BE16(UINT16_MAX),
};
if (!(priv->config.hca_attr.flex_parser_protocols &
MLX5_HCA_FLEX_GENEVE_ENABLED) ||
!priv->config.hca_attr.tunnel_stateless_geneve_rx)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 Geneve is not enabled by device"
" parameter and/or not configured in"
" firmware");
if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
/*
* Verify only UDPv4 is present as defined in
* https://tools.ietf.org/html/rfc7348
*/
if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"no outer UDP layer found");
if (!mask)
mask = &rte_flow_item_geneve_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&nic_mask,
sizeof(struct rte_flow_item_geneve), error);
if (ret)
return ret;
if (spec) {
gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
if (MLX5_GENEVE_VER_VAL(gbhdr) ||
MLX5_GENEVE_CRITO_VAL(gbhdr) ||
MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"Geneve protocol unsupported"
" fields are being used");
if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
return rte_flow_error_set
(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"Unsupported Geneve options length");
}
if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
return rte_flow_error_set
(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Geneve tunnel must be fully defined");
return 0;
}
/**
* Validate MPLS item.
*
* @param[in] dev
* Pointer to the rte_eth_dev structure.
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit-fields that holds the items detected until now.
* @param[in] prev_layer
* The protocol layer indicated in previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
const struct rte_flow_item *item __rte_unused,
uint64_t item_flags __rte_unused,
uint64_t prev_layer __rte_unused,
struct rte_flow_error *error)
{
#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
const struct rte_flow_item_mpls *mask = item->mask;
struct mlx5_priv *priv = dev->data->dev_private;
int ret;
if (!priv->config.mpls_en)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"MPLS not supported or"
" disabled in firmware"
" configuration.");
/* MPLS over IP, UDP, GRE is allowed */
if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
MLX5_FLOW_LAYER_OUTER_L4_UDP |
MLX5_FLOW_LAYER_GRE)))
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with MPLS layer");
/* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
!(item_flags & MLX5_FLOW_LAYER_GRE))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
if (!mask)
mask = &rte_flow_item_mpls_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_mpls_mask,
sizeof(struct rte_flow_item_mpls), error);
if (ret < 0)
return ret;
return 0;
#endif
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"MPLS is not supported by Verbs, please"
" update.");
}
/**
* Validate NVGRE item.
*
* @param[in] item
* Item specification.
* @param[in] item_flags
* Bit flags to mark detected items.
* @param[in] target_protocol
* The next protocol in the previous item.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
uint64_t item_flags,
uint8_t target_protocol,
struct rte_flow_error *error)
{
const struct rte_flow_item_nvgre *mask = item->mask;
int ret;
if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
return rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"protocol filtering not compatible"
" with this GRE layer");
if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"multiple tunnel layers not"
" supported");
if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"L3 Layer is missing");
if (!mask)
mask = &rte_flow_item_nvgre_mask;
ret = mlx5_flow_item_acceptable
(item, (const uint8_t *)mask,
(const uint8_t *)&rte_flow_item_nvgre_mask,
sizeof(struct rte_flow_item_nvgre), error);
if (ret < 0)
return ret;
return 0;
}
/* Allocate unique ID for the split Q/RSS subflows. */
static uint32_t
flow_qrss_get_id(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
uint32_t qrss_id, ret;
ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
if (ret)
return 0;
assert(qrss_id);
return qrss_id;
}
/* Free unique ID for the split Q/RSS subflows. */
static void
flow_qrss_free_id(struct rte_eth_dev *dev, uint32_t qrss_id)
{
struct mlx5_priv *priv = dev->data->dev_private;
if (qrss_id)
mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
}
/**
* Release resource related QUEUE/RSS action split.
*
* @param dev
* Pointer to Ethernet device.
* @param flow
* Flow to release id's from.
*/
static void
flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
struct rte_flow *flow)
{
struct mlx5_flow *dev_flow;
LIST_FOREACH(dev_flow, &flow->dev_flows, next)
if (dev_flow->qrss_id)
flow_qrss_free_id(dev, dev_flow->qrss_id);
}
static int
flow_null_validate(struct rte_eth_dev *dev __rte_unused,
const struct rte_flow_attr *attr __rte_unused,
const struct rte_flow_item items[] __rte_unused,
const struct rte_flow_action actions[] __rte_unused,
bool external __rte_unused,
struct rte_flow_error *error)
{
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
}
static struct mlx5_flow *
flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
const struct rte_flow_item items[] __rte_unused,
const struct rte_flow_action actions[] __rte_unused,
struct rte_flow_error *error)
{
rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
return NULL;
}
static int
flow_null_translate(struct rte_eth_dev *dev __rte_unused,
struct mlx5_flow *dev_flow __rte_unused,
const struct rte_flow_attr *attr __rte_unused,
const struct rte_flow_item items[] __rte_unused,
const struct rte_flow_action actions[] __rte_unused,
struct rte_flow_error *error)
{
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
}
static int
flow_null_apply(struct rte_eth_dev *dev __rte_unused,
struct rte_flow *flow __rte_unused,
struct rte_flow_error *error)
{
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
}
static void
flow_null_remove(struct rte_eth_dev *dev __rte_unused,
struct rte_flow *flow __rte_unused)
{
}
static void
flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
struct rte_flow *flow __rte_unused)
{
}
static int
flow_null_query(struct rte_eth_dev *dev __rte_unused,
struct rte_flow *flow __rte_unused,
const struct rte_flow_action *actions __rte_unused,
void *data __rte_unused,
struct rte_flow_error *error)
{
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
}
/* Void driver to protect from null pointer reference. */
const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
.validate = flow_null_validate,
.prepare = flow_null_prepare,
.translate = flow_null_translate,
.apply = flow_null_apply,
.remove = flow_null_remove,
.destroy = flow_null_destroy,
.query = flow_null_query,
};
/**
* Select flow driver type according to flow attributes and device
* configuration.
*
* @param[in] dev
* Pointer to the dev structure.
* @param[in] attr
* Pointer to the flow attributes.
*
* @return
* flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
*/
static enum mlx5_flow_drv_type
flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
{
struct mlx5_priv *priv = dev->data->dev_private;
enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
if (attr->transfer && priv->config.dv_esw_en)
type = MLX5_FLOW_TYPE_DV;
if (!attr->transfer)
type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
MLX5_FLOW_TYPE_VERBS;
return type;
}
#define flow_get_drv_ops(type) flow_drv_ops[type]
/**
* Flow driver validation API. This abstracts calling driver specific functions.
* The type of flow driver is determined according to flow attributes.
*
* @param[in] dev
* Pointer to the dev structure.
* @param[in] attr
* Pointer to the flow attributes.
* @param[in] items
* Pointer to the list of items.
* @param[in] actions
* Pointer to the list of actions.
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static inline int
flow_drv_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
fops = flow_get_drv_ops(type);
return fops->validate(dev, attr, items, actions, external, error);
}
/**
* Flow driver preparation API. This abstracts calling driver specific
* functions. Parent flow (rte_flow) should have driver type (drv_type). It
* calculates the size of memory required for device flow, allocates the memory,
* initializes the device flow and returns the pointer.
*
* @note
* This function initializes device flow structure such as dv or verbs in
* struct mlx5_flow. However, it is caller's responsibility to initialize the
* rest. For example, adding returning device flow to flow->dev_flow list and
* setting backward reference to the flow should be done out of this function.
* layers field is not filled either.
*
* @param[in] attr
* Pointer to the flow attributes.
* @param[in] items
* Pointer to the list of items.
* @param[in] actions
* Pointer to the list of actions.
* @param[out] error
* Pointer to the error structure.
*
* @return
* Pointer to device flow on success, otherwise NULL and rte_errno is set.
*/
static inline struct mlx5_flow *
flow_drv_prepare(const struct rte_flow *flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = flow->drv_type;
assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(type);
return fops->prepare(attr, items, actions, error);
}
/**
* Flow driver translation API. This abstracts calling driver specific
* functions. Parent flow (rte_flow) should have driver type (drv_type). It
* translates a generic flow into a driver flow. flow_drv_prepare() must
* precede.
*
* @note
* dev_flow->layers could be filled as a result of parsing during translation
* if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
* if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
* flow->actions could be overwritten even though all the expanded dev_flows
* have the same actions.
*
* @param[in] dev
* Pointer to the rte dev structure.
* @param[in, out] dev_flow
* Pointer to the mlx5 flow.
* @param[in] attr
* Pointer to the flow attributes.
* @param[in] items
* Pointer to the list of items.
* @param[in] actions
* Pointer to the list of actions.
* @param[out] error
* Pointer to the error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static inline int
flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(type);
return fops->translate(dev, dev_flow, attr, items, actions, error);
}
/**
* Flow driver apply API. This abstracts calling driver specific functions.
* Parent flow (rte_flow) should have driver type (drv_type). It applies
* translated driver flows on to device. flow_drv_translate() must precede.
*
* @param[in] dev
* Pointer to Ethernet device structure.
* @param[in, out] flow
* Pointer to flow structure.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static inline int
flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
struct rte_flow_error *error)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = flow->drv_type;
assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(type);
return fops->apply(dev, flow, error);
}
/**
* Flow driver remove API. This abstracts calling driver specific functions.
* Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
* on device. All the resources of the flow should be freed by calling
* flow_drv_destroy().
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in, out] flow
* Pointer to flow structure.
*/
static inline void
flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = flow->drv_type;
assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(type);
fops->remove(dev, flow);
}
/**
* Flow driver destroy API. This abstracts calling driver specific functions.
* Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
* on device and releases resources of the flow.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in, out] flow
* Pointer to flow structure.
*/
static inline void
flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type type = flow->drv_type;
flow_mreg_split_qrss_release(dev, flow);
assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(type);
fops->destroy(dev, flow);
}
/**
* Validate a flow supported by the NIC.
*
* @see rte_flow_validate()
* @see rte_flow_ops
*/
int
mlx5_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
int ret;
ret = flow_drv_validate(dev, attr, items, actions, true, error);
if (ret < 0)
return ret;
return 0;
}
/**
* Get port id item from the item list.
*
* @param[in] item
* Pointer to the list of items.
*
* @return
* Pointer to the port id item if exist, else return NULL.
*/
static const struct rte_flow_item *
find_port_id_item(const struct rte_flow_item *item)
{
assert(item);
for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
if (item->type == RTE_FLOW_ITEM_TYPE_PORT_ID)
return item;
}
return NULL;
}
/**
* Get RSS action from the action list.
*
* @param[in] actions
* Pointer to the list of actions.
*
* @return
* Pointer to the RSS action if exist, else return NULL.
*/
static const struct rte_flow_action_rss*
flow_get_rss_action(const struct rte_flow_action actions[])
{
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_RSS:
return (const struct rte_flow_action_rss *)
actions->conf;
default:
break;
}
}
return NULL;
}
static unsigned int
find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
{
const struct rte_flow_item *item;
unsigned int has_vlan = 0;
for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
has_vlan = 1;
break;
}
}
if (has_vlan)
return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
return rss_level < 2 ? MLX5_EXPANSION_ROOT :
MLX5_EXPANSION_ROOT_OUTER;
}
/**
* Get QUEUE/RSS action from the action list.
*
* @param[in] actions
* Pointer to the list of actions.
* @param[out] qrss
* Pointer to the return pointer.
* @param[out] qrss_type
* Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
* if no QUEUE/RSS is found.
*
* @return
* Total number of actions.
*/
static int
flow_parse_qrss_action(const struct rte_flow_action actions[],
const struct rte_flow_action **qrss)
{
int actions_n = 0;
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_QUEUE:
case RTE_FLOW_ACTION_TYPE_RSS:
*qrss = actions;
break;
default:
break;
}
actions_n++;
}
/* Count RTE_FLOW_ACTION_TYPE_END. */
return actions_n + 1;
}
/**
* Check meter action from the action list.
*
* @param[in] actions
* Pointer to the list of actions.
* @param[out] mtr
* Pointer to the meter exist flag.
*
* @return
* Total number of actions.
*/
static int
flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
{
int actions_n = 0;
assert(mtr);
*mtr = 0;
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_METER:
*mtr = 1;
break;
default:
break;
}
actions_n++;
}
/* Count RTE_FLOW_ACTION_TYPE_END. */
return actions_n + 1;
}
/**
* Check if the flow should be splited due to hairpin.
* The reason for the split is that in current HW we can't
* support encap on Rx, so if a flow have encap we move it
* to Tx.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] attr
* Flow rule attributes.
* @param[in] actions
* Associated actions (list terminated by the END action).
*
* @return
* > 0 the number of actions and the flow should be split,
* 0 when no split required.
*/
static int
flow_check_hairpin_split(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_action actions[])
{
int queue_action = 0;
int action_n = 0;
int encap = 0;
const struct rte_flow_action_queue *queue;
const struct rte_flow_action_rss *rss;
const struct rte_flow_action_raw_encap *raw_encap;
if (!attr->ingress)
return 0;
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_QUEUE:
queue = actions->conf;
if (queue == NULL)
return 0;
if (mlx5_rxq_get_type(dev, queue->index) !=
MLX5_RXQ_TYPE_HAIRPIN)
return 0;
queue_action = 1;
action_n++;
break;
case RTE_FLOW_ACTION_TYPE_RSS:
rss = actions->conf;
if (rss == NULL || rss->queue_num == 0)
return 0;
if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
MLX5_RXQ_TYPE_HAIRPIN)
return 0;
queue_action = 1;
action_n++;
break;
case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
encap = 1;
action_n++;
break;
case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
raw_encap = actions->conf;
if (raw_encap->size >
(sizeof(struct rte_flow_item_eth) +
sizeof(struct rte_flow_item_ipv4)))
encap = 1;
action_n++;
break;
default:
action_n++;
break;
}
}
if (encap == 1 && queue_action)
return action_n;
return 0;
}
/* Declare flow create/destroy prototype in advance. */
static struct rte_flow *
flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error);
static void
flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
struct rte_flow *flow);
/**
* Add a flow of copying flow metadata registers in RX_CP_TBL.
*
* As mark_id is unique, if there's already a registered flow for the mark_id,
* return by increasing the reference counter of the resource. Otherwise, create
* the resource (mcp_res) and flow.
*
* Flow looks like,
* - If ingress port is ANY and reg_c[1] is mark_id,
* flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
*
* For default flow (zero mark_id), flow is like,
* - If ingress port is ANY,
* reg_b := reg_c[0] and jump to RX_ACT_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @param mark_id
* ID of MARK action, zero means default flow for META.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* Associated resource on success, NULL otherwise and rte_errno is set.
*/
static struct mlx5_flow_mreg_copy_resource *
flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow_attr attr = {
.group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
.ingress = 1,
};
struct mlx5_rte_flow_item_tag tag_spec = {
.data = mark_id,
};
struct rte_flow_item items[] = {
[1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
};
struct rte_flow_action_mark ftag = {
.id = mark_id,
};
struct mlx5_flow_action_copy_mreg cp_mreg = {
.dst = REG_B,
.src = 0,
};
struct rte_flow_action_jump jump = {
.group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
};
struct rte_flow_action actions[] = {
[3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
};
struct mlx5_flow_mreg_copy_resource *mcp_res;
int ret;
/* Fill the register fileds in the flow. */
ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
if (ret < 0)
return NULL;
tag_spec.id = ret;
ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
if (ret < 0)
return NULL;
cp_mreg.src = ret;
/* Check if already registered. */
assert(priv->mreg_cp_tbl);
mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
if (mcp_res) {
/* For non-default rule. */
if (mark_id != MLX5_DEFAULT_COPY_ID)
mcp_res->refcnt++;
assert(mark_id != MLX5_DEFAULT_COPY_ID || mcp_res->refcnt == 1);
return mcp_res;
}
/* Provide the full width of FLAG specific value. */
if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
/* Build a new flow. */
if (mark_id != MLX5_DEFAULT_COPY_ID) {
items[0] = (struct rte_flow_item){
.type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
.spec = &tag_spec,
};
items[1] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_END,
};
actions[0] = (struct rte_flow_action){
.type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
.conf = &ftag,
};
actions[1] = (struct rte_flow_action){
.type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
.conf = &cp_mreg,
};
actions[2] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_JUMP,
.conf = &jump,
};
actions[3] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_END,
};
} else {
/* Default rule, wildcard match. */
attr.priority = MLX5_FLOW_PRIO_RSVD;
items[0] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_END,
};
actions[0] = (struct rte_flow_action){
.type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
.conf = &cp_mreg,
};
actions[1] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_JUMP,
.conf = &jump,
};
actions[2] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_END,
};
}
/* Build a new entry. */
mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
if (!mcp_res) {
rte_errno = ENOMEM;
return NULL;
}
/*
* The copy Flows are not included in any list. There
* ones are referenced from other Flows and can not
* be applied, removed, deleted in ardbitrary order
* by list traversing.
*/
mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
actions, false, error);
if (!mcp_res->flow)
goto error;
mcp_res->refcnt++;
mcp_res->hlist_ent.key = mark_id;
ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
&mcp_res->hlist_ent);
assert(!ret);
if (ret)
goto error;
return mcp_res;
error:
if (mcp_res->flow)
flow_list_destroy(dev, NULL, mcp_res->flow);
rte_free(mcp_res);
return NULL;
}
/**
* Release flow in RX_CP_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @flow
* Parent flow for wich copying is provided.
*/
static void
flow_mreg_del_copy_action(struct rte_eth_dev *dev,
struct rte_flow *flow)
{
struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
struct mlx5_priv *priv = dev->data->dev_private;
if (!mcp_res || !priv->mreg_cp_tbl)
return;
if (flow->copy_applied) {
assert(mcp_res->appcnt);
flow->copy_applied = 0;
--mcp_res->appcnt;
if (!mcp_res->appcnt)
flow_drv_remove(dev, mcp_res->flow);
}
/*
* We do not check availability of metadata registers here,
* because copy resources are not allocated in this case.
*/
if (--mcp_res->refcnt)
return;
assert(mcp_res->flow);
flow_list_destroy(dev, NULL, mcp_res->flow);
mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
rte_free(mcp_res);
flow->mreg_copy = NULL;
}
/**
* Start flow in RX_CP_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @flow
* Parent flow for wich copying is provided.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_mreg_start_copy_action(struct rte_eth_dev *dev,
struct rte_flow *flow)
{
struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
int ret;
if (!mcp_res || flow->copy_applied)
return 0;
if (!mcp_res->appcnt) {
ret = flow_drv_apply(dev, mcp_res->flow, NULL);
if (ret)
return ret;
}
++mcp_res->appcnt;
flow->copy_applied = 1;
return 0;
}
/**
* Stop flow in RX_CP_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @flow
* Parent flow for wich copying is provided.
*/
static void
flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
struct rte_flow *flow)
{
struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
if (!mcp_res || !flow->copy_applied)
return;
assert(mcp_res->appcnt);
--mcp_res->appcnt;
flow->copy_applied = 0;
if (!mcp_res->appcnt)
flow_drv_remove(dev, mcp_res->flow);
}
/**
* Remove the default copy action from RX_CP_TBL.
*
* @param dev
* Pointer to Ethernet device.
*/
static void
flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
{
struct mlx5_flow_mreg_copy_resource *mcp_res;
struct mlx5_priv *priv = dev->data->dev_private;
/* Check if default flow is registered. */
if (!priv->mreg_cp_tbl)
return;
mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
MLX5_DEFAULT_COPY_ID);
if (!mcp_res)
return;
assert(mcp_res->flow);
flow_list_destroy(dev, NULL, mcp_res->flow);
mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
rte_free(mcp_res);
}
/**
* Add the default copy action in in RX_CP_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* 0 for success, negative value otherwise and rte_errno is set.
*/
static int
flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_flow_mreg_copy_resource *mcp_res;
/* Check whether extensive metadata feature is engaged. */
if (!priv->config.dv_flow_en ||
priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
!mlx5_flow_ext_mreg_supported(dev) ||
!priv->sh->dv_regc0_mask)
return 0;
mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
if (!mcp_res)
return -rte_errno;
return 0;
}
/**
* Add a flow of copying flow metadata registers in RX_CP_TBL.
*
* All the flow having Q/RSS action should be split by
* flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
* performs the following,
* - CQE->flow_tag := reg_c[1] (MARK)
* - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
* As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
* but there should be a flow per each MARK ID set by MARK action.
*
* For the aforementioned reason, if there's a MARK action in flow's action
* list, a corresponding flow should be added to the RX_CP_TBL in order to copy
* the MARK ID to CQE's flow_tag like,
* - If reg_c[1] is mark_id,
* flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
*
* For SET_META action which stores value in reg_c[0], as the destination is
* also a flow metadata register (reg_b), adding a default flow is enough. Zero
* MARK ID means the default flow. The default flow looks like,
* - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
*
* @param dev
* Pointer to Ethernet device.
* @param flow
* Pointer to flow structure.
* @param[in] actions
* Pointer to the list of actions.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* 0 on success, negative value otherwise and rte_errno is set.
*/
static int
flow_mreg_update_copy_table(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_action *actions,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
struct mlx5_flow_mreg_copy_resource *mcp_res;
const struct rte_flow_action_mark *mark;
/* Check whether extensive metadata feature is engaged. */
if (!config->dv_flow_en ||
config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
!mlx5_flow_ext_mreg_supported(dev) ||
!priv->sh->dv_regc0_mask)
return 0;
/* Find MARK action. */
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_FLAG:
mcp_res = flow_mreg_add_copy_action
(dev, MLX5_FLOW_MARK_DEFAULT, error);
if (!mcp_res)
return -rte_errno;
flow->mreg_copy = mcp_res;
if (dev->data->dev_started) {
mcp_res->appcnt++;
flow->copy_applied = 1;
}
return 0;
case RTE_FLOW_ACTION_TYPE_MARK:
mark = (const struct rte_flow_action_mark *)
actions->conf;
mcp_res =
flow_mreg_add_copy_action(dev, mark->id, error);
if (!mcp_res)
return -rte_errno;
flow->mreg_copy = mcp_res;
if (dev->data->dev_started) {
mcp_res->appcnt++;
flow->copy_applied = 1;
}
return 0;
default:
break;
}
}
return 0;
}
#define MLX5_MAX_SPLIT_ACTIONS 24
#define MLX5_MAX_SPLIT_ITEMS 24
/**
* Split the hairpin flow.
* Since HW can't support encap on Rx we move the encap to Tx.
* If the count action is after the encap then we also
* move the count action. in this case the count will also measure
* the outer bytes.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[out] actions_rx
* Rx flow actions.
* @param[out] actions_tx
* Tx flow actions..
* @param[out] pattern_tx
* The pattern items for the Tx flow.
* @param[out] flow_id
* The flow ID connected to this flow.
*
* @return
* 0 on success.
*/
static int
flow_hairpin_split(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct rte_flow_action actions_rx[],
struct rte_flow_action actions_tx[],
struct rte_flow_item pattern_tx[],
uint32_t *flow_id)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_action_raw_encap *raw_encap;
const struct rte_flow_action_raw_decap *raw_decap;
struct mlx5_rte_flow_action_set_tag *set_tag;
struct rte_flow_action *tag_action;
struct mlx5_rte_flow_item_tag *tag_item;
struct rte_flow_item *item;
char *addr;
int encap = 0;
mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
rte_memcpy(actions_tx, actions,
sizeof(struct rte_flow_action));
actions_tx++;
break;
case RTE_FLOW_ACTION_TYPE_COUNT:
if (encap) {
rte_memcpy(actions_tx, actions,
sizeof(struct rte_flow_action));
actions_tx++;
} else {
rte_memcpy(actions_rx, actions,
sizeof(struct rte_flow_action));
actions_rx++;
}
break;
case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
raw_encap = actions->conf;
if (raw_encap->size >
(sizeof(struct rte_flow_item_eth) +
sizeof(struct rte_flow_item_ipv4))) {
memcpy(actions_tx, actions,
sizeof(struct rte_flow_action));
actions_tx++;
encap = 1;
} else {
rte_memcpy(actions_rx, actions,
sizeof(struct rte_flow_action));
actions_rx++;
}
break;
case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
raw_decap = actions->conf;
if (raw_decap->size <
(sizeof(struct rte_flow_item_eth) +
sizeof(struct rte_flow_item_ipv4))) {
memcpy(actions_tx, actions,
sizeof(struct rte_flow_action));
actions_tx++;
} else {
rte_memcpy(actions_rx, actions,
sizeof(struct rte_flow_action));
actions_rx++;
}
break;
default:
rte_memcpy(actions_rx, actions,
sizeof(struct rte_flow_action));
actions_rx++;
break;
}
}
/* Add set meta action and end action for the Rx flow. */
tag_action = actions_rx;
tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
actions_rx++;
rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
actions_rx++;
set_tag = (void *)actions_rx;
set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
assert(set_tag->id > REG_NONE);
set_tag->data = *flow_id;
tag_action->conf = set_tag;
/* Create Tx item list. */
rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
addr = (void *)&pattern_tx[2];
item = pattern_tx;
item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
tag_item = (void *)addr;
tag_item->data = *flow_id;
tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
assert(set_tag->id > REG_NONE);
item->spec = tag_item;
addr += sizeof(struct mlx5_rte_flow_item_tag);
tag_item = (void *)addr;
tag_item->data = UINT32_MAX;
tag_item->id = UINT16_MAX;
item->mask = tag_item;
addr += sizeof(struct mlx5_rte_flow_item_tag);
item->last = NULL;
item++;
item->type = RTE_FLOW_ITEM_TYPE_END;
return 0;
}
/**
* The last stage of splitting chain, just creates the subflow
* without any modification.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] flow
* Parent flow structure pointer.
* @param[in, out] sub_flow
* Pointer to return the created subflow, may be NULL.
* @param[in] attr
* Flow rule attributes.
* @param[in] items
* Pattern specification (list terminated by the END pattern item).
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Perform verbose error reporting if not NULL.
* @return
* 0 on success, negative value otherwise
*/
static int
flow_create_split_inner(struct rte_eth_dev *dev,
struct rte_flow *flow,
struct mlx5_flow **sub_flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
struct mlx5_flow *dev_flow;
dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
if (!dev_flow)
return -rte_errno;
dev_flow->flow = flow;
dev_flow->external = external;
/* Subflow object was created, we must include one in the list. */
LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
if (sub_flow)
*sub_flow = dev_flow;
return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
}
/**
* Split the meter flow.
*
* As meter flow will split to three sub flow, other than meter
* action, the other actions make sense to only meter accepts
* the packet. If it need to be dropped, no other additional
* actions should be take.
*
* One kind of special action which decapsulates the L3 tunnel
* header will be in the prefix sub flow, as not to take the
* L3 tunnel header into account.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[out] actions_sfx
* Suffix flow actions.
* @param[out] actions_pre
* Prefix flow actions.
* @param[out] pattern_sfx
* The pattern items for the suffix flow.
* @param[out] tag_sfx
* Pointer to suffix flow tag.
*
* @return
* 0 on success.
*/
static int
flow_meter_split_prep(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct rte_flow_action actions_sfx[],
struct rte_flow_action actions_pre[])
{
struct rte_flow_action *tag_action;
struct mlx5_rte_flow_action_set_tag *set_tag;
struct rte_flow_error error;
const struct rte_flow_action_raw_encap *raw_encap;
const struct rte_flow_action_raw_decap *raw_decap;
uint32_t tag_id;
/* Add the extra tag action first. */
tag_action = actions_pre;
tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
actions_pre++;
/* Prepare the actions for prefix and suffix flow. */
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
switch (actions->type) {
case RTE_FLOW_ACTION_TYPE_METER:
case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
memcpy(actions_pre, actions,
sizeof(struct rte_flow_action));
actions_pre++;
break;
case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
raw_encap = actions->conf;
if (raw_encap->size >
(sizeof(struct rte_flow_item_eth) +
sizeof(struct rte_flow_item_ipv4))) {
memcpy(actions_sfx, actions,
sizeof(struct rte_flow_action));
actions_sfx++;
} else {
rte_memcpy(actions_pre, actions,
sizeof(struct rte_flow_action));
actions_pre++;
}
break;
case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
raw_decap = actions->conf;
/* Size 0 decap means 50 bytes as vxlan decap. */
if (raw_decap->size && (raw_decap->size <
(sizeof(struct rte_flow_item_eth) +
sizeof(struct rte_flow_item_ipv4)))) {
memcpy(actions_sfx, actions,
sizeof(struct rte_flow_action));
actions_sfx++;
} else {
rte_memcpy(actions_pre, actions,
sizeof(struct rte_flow_action));
actions_pre++;
}
break;
default:
memcpy(actions_sfx, actions,
sizeof(struct rte_flow_action));
actions_sfx++;
break;
}
}
/* Add end action to the actions. */
actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
actions_pre++;
/* Set the tag. */
set_tag = (void *)actions_pre;
set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
/*
* Get the id from the qrss_pool to make qrss share the id with meter.
*/
tag_id = flow_qrss_get_id(dev);
set_tag->data = rte_cpu_to_be_32(tag_id);
tag_action->conf = set_tag;
return tag_id;
}
/**
* Split action list having QUEUE/RSS for metadata register copy.
*
* Once Q/RSS action is detected in user's action list, the flow action
* should be split in order to copy metadata registers, which will happen in
* RX_CP_TBL like,
* - CQE->flow_tag := reg_c[1] (MARK)
* - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
* The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
* This is because the last action of each flow must be a terminal action
* (QUEUE, RSS or DROP).
*
* Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
* stored and kept in the mlx5_flow structure per each sub_flow.
*
* The Q/RSS action is replaced with,
* - SET_TAG, setting the allocated flow ID to reg_c[2].
* And the following JUMP action is added at the end,
* - JUMP, to RX_CP_TBL.
*
* A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
* flow_create_split_metadata() routine. The flow will look like,
* - If flow ID matches (reg_c[2]), perform Q/RSS.
*
* @param dev
* Pointer to Ethernet device.
* @param[out] split_actions
* Pointer to store split actions to jump to CP_TBL.
* @param[in] actions
* Pointer to the list of original flow actions.
* @param[in] qrss
* Pointer to the Q/RSS action.
* @param[in] actions_n
* Number of original actions.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* non-zero unique flow_id on success, otherwise 0 and
* error/rte_error are set.
*/
static uint32_t
flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
struct rte_flow_action *split_actions,
const struct rte_flow_action *actions,
const struct rte_flow_action *qrss,
int actions_n, struct rte_flow_error *error)
{
struct mlx5_rte_flow_action_set_tag *set_tag;
struct rte_flow_action_jump *jump;
const int qrss_idx = qrss - actions;
uint32_t flow_id = 0;
int ret = 0;
/*
* Given actions will be split
* - Replace QUEUE/RSS action with SET_TAG to set flow ID.
* - Add jump to mreg CP_TBL.
* As a result, there will be one more action.
*/
++actions_n;
memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
set_tag = (void *)(split_actions + actions_n);
/*
* If tag action is not set to void(it means we are not the meter
* suffix flow), add the tag action. Since meter suffix flow already
* has the tag added.
*/
if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
/*
* Allocate the new subflow ID. This one is unique within
* device and not shared with representors. Otherwise,
* we would have to resolve multi-thread access synch
* issue. Each flow on the shared device is appended
* with source vport identifier, so the resulting
* flows will be unique in the shared (by master and
* representors) domain even if they have coinciding
* IDs.
*/
flow_id = flow_qrss_get_id(dev);
if (!flow_id)
return rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL, "can't allocate id "
"for split Q/RSS subflow");
/* Internal SET_TAG action to set flow ID. */
*set_tag = (struct mlx5_rte_flow_action_set_tag){
.data = flow_id,
};
ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
if (ret < 0)
return ret;
set_tag->id = ret;
/* Construct new actions array. */
/* Replace QUEUE/RSS action. */
split_actions[qrss_idx] = (struct rte_flow_action){
.type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
.conf = set_tag,
};
}
/* JUMP action to jump to mreg copy table (CP_TBL). */
jump = (void *)(set_tag + 1);
*jump = (struct rte_flow_action_jump){
.group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
};
split_actions[actions_n - 2] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_JUMP,
.conf = jump,
};
split_actions[actions_n - 1] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_END,
};
return flow_id;
}
/**
* Extend the given action list for Tx metadata copy.
*
* Copy the given action list to the ext_actions and add flow metadata register
* copy action in order to copy reg_a set by WQE to reg_c[0].
*
* @param[out] ext_actions
* Pointer to the extended action list.
* @param[in] actions
* Pointer to the list of actions.
* @param[in] actions_n
* Number of actions in the list.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* 0 on success, negative value otherwise
*/
static int
flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
struct rte_flow_action *ext_actions,
const struct rte_flow_action *actions,
int actions_n, struct rte_flow_error *error)
{
struct mlx5_flow_action_copy_mreg *cp_mreg =
(struct mlx5_flow_action_copy_mreg *)
(ext_actions + actions_n + 1);
int ret;
ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
if (ret < 0)
return ret;
cp_mreg->dst = ret;
ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
if (ret < 0)
return ret;
cp_mreg->src = ret;
memcpy(ext_actions, actions,
sizeof(*ext_actions) * actions_n);
ext_actions[actions_n - 1] = (struct rte_flow_action){
.type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
.conf = cp_mreg,
};
ext_actions[actions_n] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_END,
};
return 0;
}
/**
* The splitting for metadata feature.
*
* - Q/RSS action on NIC Rx should be split in order to pass by
* the mreg copy table (RX_CP_TBL) and then it jumps to the
* action table (RX_ACT_TBL) which has the split Q/RSS action.
*
* - All the actions on NIC Tx should have a mreg copy action to
* copy reg_a from WQE to reg_c[0].
*
* @param dev
* Pointer to Ethernet device.
* @param[in] flow
* Parent flow structure pointer.
* @param[in] attr
* Flow rule attributes.
* @param[in] items
* Pattern specification (list terminated by the END pattern item).
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Perform verbose error reporting if not NULL.
* @return
* 0 on success, negative value otherwise
*/
static int
flow_create_split_metadata(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
const struct rte_flow_action *qrss = NULL;
struct rte_flow_action *ext_actions = NULL;
struct mlx5_flow *dev_flow = NULL;
uint32_t qrss_id = 0;
int mtr_sfx = 0;
size_t act_size;
int actions_n;
int ret;
/* Check whether extensive metadata feature is engaged. */
if (!config->dv_flow_en ||
config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
!mlx5_flow_ext_mreg_supported(dev))
return flow_create_split_inner(dev, flow, NULL, attr, items,
actions, external, error);
actions_n = flow_parse_qrss_action(actions, &qrss);
if (qrss) {
/* Exclude hairpin flows from splitting. */
if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
const struct rte_flow_action_queue *queue;
queue = qrss->conf;
if (mlx5_rxq_get_type(dev, queue->index) ==
MLX5_RXQ_TYPE_HAIRPIN)
qrss = NULL;
} else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
const struct rte_flow_action_rss *rss;
rss = qrss->conf;
if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
MLX5_RXQ_TYPE_HAIRPIN)
qrss = NULL;
}
}
if (qrss) {
/* Check if it is in meter suffix table. */
mtr_sfx = attr->group == (attr->transfer ?
(MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
MLX5_FLOW_TABLE_LEVEL_SUFFIX);
/*
* Q/RSS action on NIC Rx should be split in order to pass by
* the mreg copy table (RX_CP_TBL) and then it jumps to the
* action table (RX_ACT_TBL) which has the split Q/RSS action.
*/
act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
sizeof(struct rte_flow_action_set_tag) +
sizeof(struct rte_flow_action_jump);
ext_actions = rte_zmalloc(__func__, act_size, 0);
if (!ext_actions)
return rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL, "no memory to split "
"metadata flow");
/*
* If we are the suffix flow of meter, tag already exist.
* Set the tag action to void.
*/
if (mtr_sfx)
ext_actions[qrss - actions].type =
RTE_FLOW_ACTION_TYPE_VOID;
else
ext_actions[qrss - actions].type =
MLX5_RTE_FLOW_ACTION_TYPE_TAG;
/*
* Create the new actions list with removed Q/RSS action
* and appended set tag and jump to register copy table
* (RX_CP_TBL). We should preallocate unique tag ID here
* in advance, because it is needed for set tag action.
*/
qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
qrss, actions_n, error);
if (!mtr_sfx && !qrss_id) {
ret = -rte_errno;
goto exit;
}
} else if (attr->egress && !attr->transfer) {
/*
* All the actions on NIC Tx should have a metadata register
* copy action to copy reg_a from WQE to reg_c[meta]
*/
act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
sizeof(struct mlx5_flow_action_copy_mreg);
ext_actions = rte_zmalloc(__func__, act_size, 0);
if (!ext_actions)
return rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL, "no memory to split "
"metadata flow");
/* Create the action list appended with copy register. */
ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
actions_n, error);
if (ret < 0)
goto exit;
}
/* Add the unmodified original or prefix subflow. */
ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
ext_actions ? ext_actions : actions,
external, error);
if (ret < 0)
goto exit;
assert(dev_flow);
if (qrss) {
const struct rte_flow_attr q_attr = {
.group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
.ingress = 1,
};
/* Internal PMD action to set register. */
struct mlx5_rte_flow_item_tag q_tag_spec = {
.data = qrss_id,
.id = 0,
};
struct rte_flow_item q_items[] = {
{
.type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
.spec = &q_tag_spec,
.last = NULL,
.mask = NULL,
},
{
.type = RTE_FLOW_ITEM_TYPE_END,
},
};
struct rte_flow_action q_actions[] = {
{
.type = qrss->type,
.conf = qrss->conf,
},
{
.type = RTE_FLOW_ACTION_TYPE_END,
},
};
uint64_t hash_fields = dev_flow->hash_fields;
/*
* Configure the tag item only if there is no meter subflow.
* Since tag is already marked in the meter suffix subflow
* we can just use the meter suffix items as is.
*/
if (qrss_id) {
/* Not meter subflow. */
assert(!mtr_sfx);
/*
* Put unique id in prefix flow due to it is destroyed
* after suffix flow and id will be freed after there
* is no actual flows with this id and identifier
* reallocation becomes possible (for example, for
* other flows in other threads).
*/
dev_flow->qrss_id = qrss_id;
qrss_id = 0;
ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
error);
if (ret < 0)
goto exit;
q_tag_spec.id = ret;
}
dev_flow = NULL;
/* Add suffix subflow to execute Q/RSS. */
ret = flow_create_split_inner(dev, flow, &dev_flow,
&q_attr, mtr_sfx ? items :
q_items, q_actions,
external, error);
if (ret < 0)
goto exit;
assert(dev_flow);
dev_flow->hash_fields = hash_fields;
}
exit:
/*
* We do not destroy the partially created sub_flows in case of error.
* These ones are included into parent flow list and will be destroyed
* by flow_drv_destroy.
*/
flow_qrss_free_id(dev, qrss_id);
rte_free(ext_actions);
return ret;
}
/**
* The splitting for meter feature.
*
* - The meter flow will be split to two flows as prefix and
* suffix flow. The packets make sense only it pass the prefix
* meter action.
*
* - Reg_C_5 is used for the packet to match betweend prefix and
* suffix flow.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] flow
* Parent flow structure pointer.
* @param[in] attr
* Flow rule attributes.
* @param[in] items
* Pattern specification (list terminated by the END pattern item).
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Perform verbose error reporting if not NULL.
* @return
* 0 on success, negative value otherwise
*/
static int
flow_create_split_meter(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow_action *sfx_actions = NULL;
struct rte_flow_action *pre_actions = NULL;
struct rte_flow_item *sfx_items = NULL;
const struct rte_flow_item *sfx_port_id_item;
struct mlx5_flow *dev_flow = NULL;
struct rte_flow_attr sfx_attr = *attr;
uint32_t mtr = 0;
uint32_t mtr_tag_id = 0;
size_t act_size;
size_t item_size;
int actions_n = 0;
int ret;
if (priv->mtr_en)
actions_n = flow_check_meter_action(actions, &mtr);
if (mtr) {
struct mlx5_rte_flow_item_tag *tag_spec;
/* The five prefix actions: meter, decap, encap, tag, end. */
act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
sizeof(struct rte_flow_action_set_tag);
/* tag, end. */
#define METER_SUFFIX_ITEM 3
item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
sizeof(struct mlx5_rte_flow_item_tag);
sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
if (!sfx_actions)
return rte_flow_error_set(error, ENOMEM,
RTE_FLOW_ERROR_TYPE_ACTION,
NULL, "no memory to split "
"meter flow");
pre_actions = sfx_actions + actions_n;
mtr_tag_id = flow_meter_split_prep(dev, actions, sfx_actions,
pre_actions);
if (!mtr_tag_id) {
ret = -rte_errno;
goto exit;
}
/* Add the prefix subflow. */
ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
pre_actions, external, error);
if (ret) {
ret = -rte_errno;
goto exit;
}
dev_flow->mtr_flow_id = mtr_tag_id;
/* Prepare the suffix flow match pattern. */
sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
act_size);
tag_spec = (struct mlx5_rte_flow_item_tag *)(sfx_items +
METER_SUFFIX_ITEM);
tag_spec->data = rte_cpu_to_be_32(dev_flow->mtr_flow_id);
tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0,
error);
sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
sfx_items->spec = tag_spec;
sfx_items->last = NULL;
sfx_items->mask = NULL;
sfx_items++;
sfx_port_id_item = find_port_id_item(items);
if (sfx_port_id_item) {
memcpy(sfx_items, sfx_port_id_item,
sizeof(*sfx_items));
sfx_items++;
}
sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
sfx_items -= METER_SUFFIX_ITEM;
/* Setting the sfx group atrr. */
sfx_attr.group = sfx_attr.transfer ?
(MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
MLX5_FLOW_TABLE_LEVEL_SUFFIX;
}
/* Add the prefix subflow. */
ret = flow_create_split_metadata(dev, flow, &sfx_attr,
sfx_items ? sfx_items : items,
sfx_actions ? sfx_actions : actions,
external, error);
exit:
if (sfx_actions)
rte_free(sfx_actions);
return ret;
}
/**
* Split the flow to subflow set. The splitters might be linked
* in the chain, like this:
* flow_create_split_outer() calls:
* flow_create_split_meter() calls:
* flow_create_split_metadata(meter_subflow_0) calls:
* flow_create_split_inner(metadata_subflow_0)
* flow_create_split_inner(metadata_subflow_1)
* flow_create_split_inner(metadata_subflow_2)
* flow_create_split_metadata(meter_subflow_1) calls:
* flow_create_split_inner(metadata_subflow_0)
* flow_create_split_inner(metadata_subflow_1)
* flow_create_split_inner(metadata_subflow_2)
*
* This provide flexible way to add new levels of flow splitting.
* The all of successfully created subflows are included to the
* parent flow dev_flow list.
*
* @param dev
* Pointer to Ethernet device.
* @param[in] flow
* Parent flow structure pointer.
* @param[in] attr
* Flow rule attributes.
* @param[in] items
* Pattern specification (list terminated by the END pattern item).
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Perform verbose error reporting if not NULL.
* @return
* 0 on success, negative value otherwise
*/
static int
flow_create_split_outer(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
int ret;
ret = flow_create_split_meter(dev, flow, attr, items,
actions, external, error);
assert(ret <= 0);
return ret;
}
/**
* Create a flow and add it to @p list.
*
* @param dev
* Pointer to Ethernet device.
* @param list
* Pointer to a TAILQ flow list. If this parameter NULL,
* no list insertion occurred, flow is just created,
* this is caller's responsibility to track the
* created flow.
* @param[in] attr
* Flow rule attributes.
* @param[in] items
* Pattern specification (list terminated by the END pattern item).
* @param[in] actions
* Associated actions (list terminated by the END action).
* @param[in] external
* This flow rule is created by request external to PMD.
* @param[out] error
* Perform verbose error reporting if not NULL.
*
* @return
* A flow on success, NULL otherwise and rte_errno is set.
*/
static struct rte_flow *
flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
bool external, struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow = NULL;
struct mlx5_flow *dev_flow;
const struct rte_flow_action_rss *rss;
union {
struct rte_flow_expand_rss buf;
uint8_t buffer[2048];
} expand_buffer;
union {
struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
uint8_t buffer[2048];
} actions_rx;
union {
struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
uint8_t buffer[2048];
} actions_hairpin_tx;
union {
struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
uint8_t buffer[2048];
} items_tx;
struct rte_flow_expand_rss *buf = &expand_buffer.buf;
const struct rte_flow_action *p_actions_rx = actions;
int ret;
uint32_t i;
uint32_t flow_size;
int hairpin_flow = 0;
uint32_t hairpin_id = 0;
struct rte_flow_attr attr_tx = { .priority = 0 };
hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
if (hairpin_flow > 0) {
if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
rte_errno = EINVAL;
return NULL;
}
flow_hairpin_split(dev, actions, actions_rx.actions,
actions_hairpin_tx.actions, items_tx.items,
&hairpin_id);
p_actions_rx = actions_rx.actions;
}
ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
error);
if (ret < 0)
goto error_before_flow;
flow_size = sizeof(struct rte_flow);
rss = flow_get_rss_action(p_actions_rx);
if (rss)
flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
sizeof(void *));
else
flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
flow = rte_calloc(__func__, 1, flow_size, 0);
if (!flow) {
rte_errno = ENOMEM;
goto error_before_flow;
}
flow->drv_type = flow_get_drv_type(dev, attr);
if (hairpin_id != 0)
flow->hairpin_flow_id = hairpin_id;
assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
flow->drv_type < MLX5_FLOW_TYPE_MAX);
flow->rss.queue = (void *)(flow + 1);
if (rss) {
/*
* The following information is required by
* mlx5_flow_hashfields_adjust() in advance.
*/
flow->rss.level = rss->level;
/* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
}
LIST_INIT(&flow->dev_flows);
if (rss && rss->types) {
unsigned int graph_root;
graph_root = find_graph_root(items, rss->level);
ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
items, rss->types,
mlx5_support_expansion,
graph_root);
assert(ret > 0 &&
(unsigned int)ret < sizeof(expand_buffer.buffer));
} else {
buf->entries = 1;
buf->entry[0].pattern = (void *)(uintptr_t)items;
}
for (i = 0; i < buf->entries; ++i) {
/*
* The splitter may create multiple dev_flows,
* depending on configuration. In the simplest
* case it just creates unmodified original flow.
*/
ret = flow_create_split_outer(dev, flow, attr,
buf->entry[i].pattern,
p_actions_rx, external,
error);
if (ret < 0)
goto error;
}
/* Create the tx flow. */
if (hairpin_flow) {
attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
attr_tx.ingress = 0;
attr_tx.egress = 1;
dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
actions_hairpin_tx.actions, error);
if (!dev_flow)
goto error;
dev_flow->flow = flow;
dev_flow->external = 0;
LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
ret = flow_drv_translate(dev, dev_flow, &attr_tx,
items_tx.items,
actions_hairpin_tx.actions, error);
if (ret < 0)
goto error;
}
/*
* Update the metadata register copy table. If extensive
* metadata feature is enabled and registers are supported
* we might create the extra rte_flow for each unique
* MARK/FLAG action ID.
*
* The table is updated for ingress Flows only, because
* the egress Flows belong to the different device and
* copy table should be updated in peer NIC Rx domain.
*/
if (attr->ingress &&
(external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
ret = flow_mreg_update_copy_table(dev, flow, actions, error);
if (ret)
goto error;
}
if (dev->data->dev_started) {
ret = flow_drv_apply(dev, flow, error);
if (ret < 0)
goto error;
}
if (list)
TAILQ_INSERT_TAIL(list, flow, next);
flow_rxq_flags_set(dev, flow);
return flow;
error_before_flow:
if (hairpin_id)
mlx5_flow_id_release(priv->sh->flow_id_pool,
hairpin_id);
return NULL;
error:
assert(flow);
flow_mreg_del_copy_action(dev, flow);
ret = rte_errno; /* Save rte_errno before cleanup. */
if (flow->hairpin_flow_id)
mlx5_flow_id_release(priv->sh->flow_id_pool,
flow->hairpin_flow_id);
assert(flow);
flow_drv_destroy(dev, flow);
rte_free(flow);
rte_errno = ret; /* Restore rte_errno. */
return NULL;
}
/**
* Create a dedicated flow rule on e-switch table 0 (root table), to direct all
* incoming packets to table 1.
*
* Other flow rules, requested for group n, will be created in
* e-switch table n+1.
* Jump action to e-switch group n will be created to group n+1.
*
* Used when working in switchdev mode, to utilise advantages of table 1
* and above.
*
* @param dev
* Pointer to Ethernet device.
*
* @return
* Pointer to flow on success, NULL otherwise and rte_errno is set.
*/
struct rte_flow *
mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
{
const struct rte_flow_attr attr = {
.group = 0,
.priority = 0,
.ingress = 1,
.egress = 0,
.transfer = 1,
};
const struct rte_flow_item pattern = {
.type = RTE_FLOW_ITEM_TYPE_END,
};
struct rte_flow_action_jump jump = {
.group = 1,
};
const struct rte_flow_action actions[] = {
{
.type = RTE_FLOW_ACTION_TYPE_JUMP,
.conf = &jump,
},
{
.type = RTE_FLOW_ACTION_TYPE_END,
},
};
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow_error error;
return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
actions, false, &error);
}
/**
* Create a flow.
*
* @see rte_flow_create()
* @see rte_flow_ops
*/
struct rte_flow *
mlx5_flow_create(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item items[],
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
return flow_list_create(dev, &priv->flows,
attr, items, actions, true, error);
}
/**
* Destroy a flow in a list.
*
* @param dev
* Pointer to Ethernet device.
* @param list
* Pointer to a TAILQ flow list. If this parameter NULL,
* there is no flow removal from the list.
* @param[in] flow
* Flow to destroy.
*/
static void
flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
struct rte_flow *flow)
{
struct mlx5_priv *priv = dev->data->dev_private;
/*
* Update RX queue flags only if port is started, otherwise it is
* already clean.
*/
if (dev->data->dev_started)
flow_rxq_flags_trim(dev, flow);
if (flow->hairpin_flow_id)
mlx5_flow_id_release(priv->sh->flow_id_pool,
flow->hairpin_flow_id);
flow_drv_destroy(dev, flow);
if (list)
TAILQ_REMOVE(list, flow, next);
flow_mreg_del_copy_action(dev, flow);
rte_free(flow->fdir);
rte_free(flow);
}
/**
* Destroy all flows.
*
* @param dev
* Pointer to Ethernet device.
* @param list
* Pointer to a TAILQ flow list.
*/
void
mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
{
while (!TAILQ_EMPTY(list)) {
struct rte_flow *flow;
flow = TAILQ_FIRST(list);
flow_list_destroy(dev, list, flow);
}
}
/**
* Remove all flows.
*
* @param dev
* Pointer to Ethernet device.
* @param list
* Pointer to a TAILQ flow list.
*/
void
mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
{
struct rte_flow *flow;
TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
flow_drv_remove(dev, flow);
flow_mreg_stop_copy_action(dev, flow);
}
flow_mreg_del_default_copy_action(dev);
flow_rxq_flags_clear(dev);
}
/**
* Add all flows.
*
* @param dev
* Pointer to Ethernet device.
* @param list
* Pointer to a TAILQ flow list.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
{
struct rte_flow *flow;
struct rte_flow_error error;
int ret = 0;
/* Make sure default copy action (reg_c[0] -> reg_b) is created. */
ret = flow_mreg_add_default_copy_action(dev, &error);
if (ret < 0)
return -rte_errno;
/* Apply Flows created by application. */
TAILQ_FOREACH(flow, list, next) {
ret = flow_mreg_start_copy_action(dev, flow);
if (ret < 0)
goto error;
ret = flow_drv_apply(dev, flow, &error);
if (ret < 0)
goto error;
flow_rxq_flags_set(dev, flow);
}
return 0;
error:
ret = rte_errno; /* Save rte_errno before cleanup. */
mlx5_flow_stop(dev, list);
rte_errno = ret; /* Restore rte_errno. */
return -rte_errno;
}
/**
* Verify the flow list is empty
*
* @param dev
* Pointer to Ethernet device.
*
* @return the number of flows not released.
*/
int
mlx5_flow_verify(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow;
int ret = 0;
TAILQ_FOREACH(flow, &priv->flows, next) {
DRV_LOG(DEBUG, "port %u flow %p still referenced",
dev->data->port_id, (void *)flow);
++ret;
}
return ret;
}
/**
* Enable default hairpin egress flow.
*
* @param dev
* Pointer to Ethernet device.
* @param queue
* The queue index.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
uint32_t queue)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_attr attr = {
.egress = 1,
.priority = 0,
};
struct mlx5_rte_flow_item_tx_queue queue_spec = {
.queue = queue,
};
struct mlx5_rte_flow_item_tx_queue queue_mask = {
.queue = UINT32_MAX,
};
struct rte_flow_item items[] = {
{
.type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
.spec = &queue_spec,
.last = NULL,
.mask = &queue_mask,
},
{
.type = RTE_FLOW_ITEM_TYPE_END,
},
};
struct rte_flow_action_jump jump = {
.group = MLX5_HAIRPIN_TX_TABLE,
};
struct rte_flow_action actions[2];
struct rte_flow *flow;
struct rte_flow_error error;
actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
actions[0].conf = &jump;
actions[1].type = RTE_FLOW_ACTION_TYPE_END;
flow = flow_list_create(dev, &priv->ctrl_flows,
&attr, items, actions, false, &error);
if (!flow) {
DRV_LOG(DEBUG,
"Failed to create ctrl flow: rte_errno(%d),"
" type(%d), message(%s)",
rte_errno, error.type,
error.message ? error.message : " (no stated reason)");
return -rte_errno;
}
return 0;
}
/**
* Enable a control flow configured from the control plane.
*
* @param dev
* Pointer to Ethernet device.
* @param eth_spec
* An Ethernet flow spec to apply.
* @param eth_mask
* An Ethernet flow mask to apply.
* @param vlan_spec
* A VLAN flow spec to apply.
* @param vlan_mask
* A VLAN flow mask to apply.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
struct rte_flow_item_eth *eth_spec,
struct rte_flow_item_eth *eth_mask,
struct rte_flow_item_vlan *vlan_spec,
struct rte_flow_item_vlan *vlan_mask)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_flow_attr attr = {
.ingress = 1,
.priority = MLX5_FLOW_PRIO_RSVD,
};
struct rte_flow_item items[] = {
{
.type = RTE_FLOW_ITEM_TYPE_ETH,
.spec = eth_spec,
.last = NULL,
.mask = eth_mask,
},
{
.type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
RTE_FLOW_ITEM_TYPE_END,
.spec = vlan_spec,
.last = NULL,
.mask = vlan_mask,
},
{
.type = RTE_FLOW_ITEM_TYPE_END,
},
};
uint16_t queue[priv->reta_idx_n];
struct rte_flow_action_rss action_rss = {
.func = RTE_ETH_HASH_FUNCTION_DEFAULT,
.level = 0,
.types = priv->rss_conf.rss_hf,
.key_len = priv->rss_conf.rss_key_len,
.queue_num = priv->reta_idx_n,
.key = priv->rss_conf.rss_key,
.queue = queue,
};
struct rte_flow_action actions[] = {
{
.type = RTE_FLOW_ACTION_TYPE_RSS,
.conf = &action_rss,
},
{
.type = RTE_FLOW_ACTION_TYPE_END,
},
};
struct rte_flow *flow;
struct rte_flow_error error;
unsigned int i;
if (!priv->reta_idx_n || !priv->rxqs_n) {
return 0;
}
for (i = 0; i != priv->reta_idx_n; ++i)
queue[i] = (*priv->reta_idx)[i];
flow = flow_list_create(dev, &priv->ctrl_flows,
&attr, items, actions, false, &error);
if (!flow)
return -rte_errno;
return 0;
}
/**
* Enable a flow control configured from the control plane.
*
* @param dev
* Pointer to Ethernet device.
* @param eth_spec
* An Ethernet flow spec to apply.
* @param eth_mask
* An Ethernet flow mask to apply.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_ctrl_flow(struct rte_eth_dev *dev,
struct rte_flow_item_eth *eth_spec,
struct rte_flow_item_eth *eth_mask)
{
return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
}
/**
* Destroy a flow.
*
* @see rte_flow_destroy()
* @see rte_flow_ops
*/
int
mlx5_flow_destroy(struct rte_eth_dev *dev,
struct rte_flow *flow,
struct rte_flow_error *error __rte_unused)
{
struct mlx5_priv *priv = dev->data->dev_private;
flow_list_destroy(dev, &priv->flows, flow);
return 0;
}
/**
* Destroy all flows.
*
* @see rte_flow_flush()
* @see rte_flow_ops
*/
int
mlx5_flow_flush(struct rte_eth_dev *dev,
struct rte_flow_error *error __rte_unused)
{
struct mlx5_priv *priv = dev->data->dev_private;
mlx5_flow_list_flush(dev, &priv->flows);
return 0;
}
/**
* Isolated mode.
*
* @see rte_flow_isolate()
* @see rte_flow_ops
*/
int
mlx5_flow_isolate(struct rte_eth_dev *dev,
int enable,
struct rte_flow_error *error)
{
struct mlx5_priv *priv = dev->data->dev_private;
if (dev->data->dev_started) {
rte_flow_error_set(error, EBUSY,
RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
NULL,
"port must be stopped first");
return -rte_errno;
}
priv->isolated = !!enable;
if (enable)
dev->dev_ops = &mlx5_dev_ops_isolate;
else
dev->dev_ops = &mlx5_dev_ops;
return 0;
}
/**
* Query a flow.
*
* @see rte_flow_query()
* @see rte_flow_ops
*/
static int
flow_drv_query(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_action *actions,
void *data,
struct rte_flow_error *error)
{
const struct mlx5_flow_driver_ops *fops;
enum mlx5_flow_drv_type ftype = flow->drv_type;
assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
fops = flow_get_drv_ops(ftype);
return fops->query(dev, flow, actions, data, error);
}
/**
* Query a flow.
*
* @see rte_flow_query()
* @see rte_flow_ops
*/
int
mlx5_flow_query(struct rte_eth_dev *dev,
struct rte_flow *flow,
const struct rte_flow_action *actions,
void *data,
struct rte_flow_error *error)
{
int ret;
ret = flow_drv_query(dev, flow, actions, data, error);
if (ret < 0)
return ret;
return 0;
}
/**
* Convert a flow director filter to a generic flow.
*
* @param dev
* Pointer to Ethernet device.
* @param fdir_filter
* Flow director filter to add.
* @param attributes
* Generic flow parameters structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_fdir_filter_convert(struct rte_eth_dev *dev,
const struct rte_eth_fdir_filter *fdir_filter,
struct mlx5_fdir *attributes)
{
struct mlx5_priv *priv = dev->data->dev_private;
const struct rte_eth_fdir_input *input = &fdir_filter->input;
const struct rte_eth_fdir_masks *mask =
&dev->data->dev_conf.fdir_conf.mask;
/* Validate queue number. */
if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
DRV_LOG(ERR, "port %u invalid queue number %d",
dev->data->port_id, fdir_filter->action.rx_queue);
rte_errno = EINVAL;
return -rte_errno;
}
attributes->attr.ingress = 1;
attributes->items[0] = (struct rte_flow_item) {
.type = RTE_FLOW_ITEM_TYPE_ETH,
.spec = &attributes->l2,
.mask = &attributes->l2_mask,
};
switch (fdir_filter->action.behavior) {
case RTE_ETH_FDIR_ACCEPT:
attributes->actions[0] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_QUEUE,
.conf = &attributes->queue,
};
break;
case RTE_ETH_FDIR_REJECT:
attributes->actions[0] = (struct rte_flow_action){
.type = RTE_FLOW_ACTION_TYPE_DROP,
};
break;
default:
DRV_LOG(ERR, "port %u invalid behavior %d",
dev->data->port_id,
fdir_filter->action.behavior);
rte_errno = ENOTSUP;
return -rte_errno;
}
attributes->queue.index = fdir_filter->action.rx_queue;
/* Handle L3. */
switch (fdir_filter->input.flow_type) {
case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
.src_addr = input->flow.ip4_flow.src_ip,
.dst_addr = input->flow.ip4_flow.dst_ip,
.time_to_live = input->flow.ip4_flow.ttl,
.type_of_service = input->flow.ip4_flow.tos,
};
attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
.src_addr = mask->ipv4_mask.src_ip,
.dst_addr = mask->ipv4_mask.dst_ip,
.time_to_live = mask->ipv4_mask.ttl,
.type_of_service = mask->ipv4_mask.tos,
.next_proto_id = mask->ipv4_mask.proto,
};
attributes->items[1] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_IPV4,
.spec = &attributes->l3,
.mask = &attributes->l3_mask,
};
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
.hop_limits = input->flow.ipv6_flow.hop_limits,
.proto = input->flow.ipv6_flow.proto,
};
memcpy(attributes->l3.ipv6.hdr.src_addr,
input->flow.ipv6_flow.src_ip,
RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
memcpy(attributes->l3.ipv6.hdr.dst_addr,
input->flow.ipv6_flow.dst_ip,
RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
mask->ipv6_mask.src_ip,
RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
mask->ipv6_mask.dst_ip,
RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
attributes->items[1] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_IPV6,
.spec = &attributes->l3,
.mask = &attributes->l3_mask,
};
break;
default:
DRV_LOG(ERR, "port %u invalid flow type%d",
dev->data->port_id, fdir_filter->input.flow_type);
rte_errno = ENOTSUP;
return -rte_errno;
}
/* Handle L4. */
switch (fdir_filter->input.flow_type) {
case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
attributes->l4.udp.hdr = (struct rte_udp_hdr){
.src_port = input->flow.udp4_flow.src_port,
.dst_port = input->flow.udp4_flow.dst_port,
};
attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
.src_port = mask->src_port_mask,
.dst_port = mask->dst_port_mask,
};
attributes->items[2] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_UDP,
.spec = &attributes->l4,
.mask = &attributes->l4_mask,
};
break;
case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
.src_port = input->flow.tcp4_flow.src_port,
.dst_port = input->flow.tcp4_flow.dst_port,
};
attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
.src_port = mask->src_port_mask,
.dst_port = mask->dst_port_mask,
};
attributes->items[2] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_TCP,
.spec = &attributes->l4,
.mask = &attributes->l4_mask,
};
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
attributes->l4.udp.hdr = (struct rte_udp_hdr){
.src_port = input->flow.udp6_flow.src_port,
.dst_port = input->flow.udp6_flow.dst_port,
};
attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
.src_port = mask->src_port_mask,
.dst_port = mask->dst_port_mask,
};
attributes->items[2] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_UDP,
.spec = &attributes->l4,
.mask = &attributes->l4_mask,
};
break;
case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
.src_port = input->flow.tcp6_flow.src_port,
.dst_port = input->flow.tcp6_flow.dst_port,
};
attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
.src_port = mask->src_port_mask,
.dst_port = mask->dst_port_mask,
};
attributes->items[2] = (struct rte_flow_item){
.type = RTE_FLOW_ITEM_TYPE_TCP,
.spec = &attributes->l4,
.mask = &attributes->l4_mask,
};
break;
case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
break;
default:
DRV_LOG(ERR, "port %u invalid flow type%d",
dev->data->port_id, fdir_filter->input.flow_type);
rte_errno = ENOTSUP;
return -rte_errno;
}
return 0;
}
#define FLOW_FDIR_CMP(f1, f2, fld) \
memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
/**
* Compare two FDIR flows. If items and actions are identical, the two flows are
* regarded as same.
*
* @param dev
* Pointer to Ethernet device.
* @param f1
* FDIR flow to compare.
* @param f2
* FDIR flow to compare.
*
* @return
* Zero on match, 1 otherwise.
*/
static int
flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
{
if (FLOW_FDIR_CMP(f1, f2, attr) ||
FLOW_FDIR_CMP(f1, f2, l2) ||
FLOW_FDIR_CMP(f1, f2, l2_mask) ||
FLOW_FDIR_CMP(f1, f2, l3) ||
FLOW_FDIR_CMP(f1, f2, l3_mask) ||
FLOW_FDIR_CMP(f1, f2, l4) ||
FLOW_FDIR_CMP(f1, f2, l4_mask) ||
FLOW_FDIR_CMP(f1, f2, actions[0].type))
return 1;
if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
FLOW_FDIR_CMP(f1, f2, queue))
return 1;
return 0;
}
/**
* Search device flow list to find out a matched FDIR flow.
*
* @param dev
* Pointer to Ethernet device.
* @param fdir_flow
* FDIR flow to lookup.
*
* @return
* Pointer of flow if found, NULL otherwise.
*/
static struct rte_flow *
flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow = NULL;
assert(fdir_flow);
TAILQ_FOREACH(flow, &priv->flows, next) {
if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
DRV_LOG(DEBUG, "port %u found FDIR flow %p",
dev->data->port_id, (void *)flow);
break;
}
}
return flow;
}
/**
* Add new flow director filter and store it in list.
*
* @param dev
* Pointer to Ethernet device.
* @param fdir_filter
* Flow director filter to add.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_fdir_filter_add(struct rte_eth_dev *dev,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_fdir *fdir_flow;
struct rte_flow *flow;
int ret;
fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
if (!fdir_flow) {
rte_errno = ENOMEM;
return -rte_errno;
}
ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
if (ret)
goto error;
flow = flow_fdir_filter_lookup(dev, fdir_flow);
if (flow) {
rte_errno = EEXIST;
goto error;
}
flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
fdir_flow->items, fdir_flow->actions, true,
NULL);
if (!flow)
goto error;
assert(!flow->fdir);
flow->fdir = fdir_flow;
DRV_LOG(DEBUG, "port %u created FDIR flow %p",
dev->data->port_id, (void *)flow);
return 0;
error:
rte_free(fdir_flow);
return -rte_errno;
}
/**
* Delete specific filter.
*
* @param dev
* Pointer to Ethernet device.
* @param fdir_filter
* Filter to be deleted.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_fdir_filter_delete(struct rte_eth_dev *dev,
const struct rte_eth_fdir_filter *fdir_filter)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct rte_flow *flow;
struct mlx5_fdir fdir_flow = {
.attr.group = 0,
};
int ret;
ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
if (ret)
return -rte_errno;
flow = flow_fdir_filter_lookup(dev, &fdir_flow);
if (!flow) {
rte_errno = ENOENT;
return -rte_errno;
}
flow_list_destroy(dev, &priv->flows, flow);
DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
dev->data->port_id, (void *)flow);
return 0;
}
/**
* Update queue for specific filter.
*
* @param dev
* Pointer to Ethernet device.
* @param fdir_filter
* Filter to be updated.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_fdir_filter_update(struct rte_eth_dev *dev,
const struct rte_eth_fdir_filter *fdir_filter)
{
int ret;
ret = flow_fdir_filter_delete(dev, fdir_filter);
if (ret)
return ret;
return flow_fdir_filter_add(dev, fdir_filter);
}
/**
* Flush all filters.
*
* @param dev
* Pointer to Ethernet device.
*/
static void
flow_fdir_filter_flush(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
mlx5_flow_list_flush(dev, &priv->flows);
}
/**
* Get flow director information.
*
* @param dev
* Pointer to Ethernet device.
* @param[out] fdir_info
* Resulting flow director information.
*/
static void
flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
{
struct rte_eth_fdir_masks *mask =
&dev->data->dev_conf.fdir_conf.mask;
fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
fdir_info->guarant_spc = 0;
rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
fdir_info->max_flexpayload = 0;
fdir_info->flow_types_mask[0] = 0;
fdir_info->flex_payload_unit = 0;
fdir_info->max_flex_payload_segment_num = 0;
fdir_info->flex_payload_limit = 0;
memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
}
/**
* Deal with flow director operations.
*
* @param dev
* Pointer to Ethernet device.
* @param filter_op
* Operation to perform.
* @param arg
* Pointer to operation-specific structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
static int
flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
void *arg)
{
enum rte_fdir_mode fdir_mode =
dev->data->dev_conf.fdir_conf.mode;
if (filter_op == RTE_ETH_FILTER_NOP)
return 0;
if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
DRV_LOG(ERR, "port %u flow director mode %d not supported",
dev->data->port_id, fdir_mode);
rte_errno = EINVAL;
return -rte_errno;
}
switch (filter_op) {
case RTE_ETH_FILTER_ADD:
return flow_fdir_filter_add(dev, arg);
case RTE_ETH_FILTER_UPDATE:
return flow_fdir_filter_update(dev, arg);
case RTE_ETH_FILTER_DELETE:
return flow_fdir_filter_delete(dev, arg);
case RTE_ETH_FILTER_FLUSH:
flow_fdir_filter_flush(dev);
break;
case RTE_ETH_FILTER_INFO:
flow_fdir_info_get(dev, arg);
break;
default:
DRV_LOG(DEBUG, "port %u unknown operation %u",
dev->data->port_id, filter_op);
rte_errno = EINVAL;
return -rte_errno;
}
return 0;
}
/**
* Manage filter operations.
*
* @param dev
* Pointer to Ethernet device structure.
* @param filter_type
* Filter type.
* @param filter_op
* Operation to perform.
* @param arg
* Pointer to operation-specific structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
enum rte_filter_type filter_type,
enum rte_filter_op filter_op,
void *arg)
{
switch (filter_type) {
case RTE_ETH_FILTER_GENERIC:
if (filter_op != RTE_ETH_FILTER_GET) {
rte_errno = EINVAL;
return -rte_errno;
}
*(const void **)arg = &mlx5_flow_ops;
return 0;
case RTE_ETH_FILTER_FDIR:
return flow_fdir_ctrl_func(dev, filter_op, arg);
default:
DRV_LOG(ERR, "port %u filter type (%d) not supported",
dev->data->port_id, filter_type);
rte_errno = ENOTSUP;
return -rte_errno;
}
return 0;
}
/**
* Create the needed meter and suffix tables.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] fm
* Pointer to the flow meter.
*
* @return
* Pointer to table set on success, NULL otherwise.
*/
struct mlx5_meter_domains_infos *
mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
const struct mlx5_flow_meter *fm)
{
const struct mlx5_flow_driver_ops *fops;
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->create_mtr_tbls(dev, fm);
}
/**
* Destroy the meter table set.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] tbl
* Pointer to the meter table set.
*
* @return
* 0 on success.
*/
int
mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
struct mlx5_meter_domains_infos *tbls)
{
const struct mlx5_flow_driver_ops *fops;
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->destroy_mtr_tbls(dev, tbls);
}
/**
* Create policer rules.
*
* @param[in] dev
* Pointer to Ethernet device.
* @param[in] fm
* Pointer to flow meter structure.
* @param[in] attr
* Pointer to flow attributes.
*
* @return
* 0 on success, -1 otherwise.
*/
int
mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
struct mlx5_flow_meter *fm,
const struct rte_flow_attr *attr)
{
const struct mlx5_flow_driver_ops *fops;
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->create_policer_rules(dev, fm, attr);
}
/**
* Destroy policer rules.
*
* @param[in] fm
* Pointer to flow meter structure.
* @param[in] attr
* Pointer to flow attributes.
*
* @return
* 0 on success, -1 otherwise.
*/
int
mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
struct mlx5_flow_meter *fm,
const struct rte_flow_attr *attr)
{
const struct mlx5_flow_driver_ops *fops;
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->destroy_policer_rules(dev, fm, attr);
}
/**
* Allocate a counter.
*
* @param[in] dev
* Pointer to Ethernet device structure.
*
* @return
* Pointer to allocated counter on success, NULL otherwise.
*/
struct mlx5_flow_counter *
mlx5_counter_alloc(struct rte_eth_dev *dev)
{
const struct mlx5_flow_driver_ops *fops;
struct rte_flow_attr attr = { .transfer = 0 };
if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->counter_alloc(dev);
}
DRV_LOG(ERR,
"port %u counter allocate is not supported.",
dev->data->port_id);
return NULL;
}
/**
* Free a counter.
*
* @param[in] dev
* Pointer to Ethernet device structure.
* @param[in] cnt
* Pointer to counter to be free.
*/
void
mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
{
const struct mlx5_flow_driver_ops *fops;
struct rte_flow_attr attr = { .transfer = 0 };
if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
fops->counter_free(dev, cnt);
return;
}
DRV_LOG(ERR,
"port %u counter free is not supported.",
dev->data->port_id);
}
/**
* Query counter statistics.
*
* @param[in] dev
* Pointer to Ethernet device structure.
* @param[in] cnt
* Pointer to counter to query.
* @param[in] clear
* Set to clear counter statistics.
* @param[out] pkts
* The counter hits packets number to save.
* @param[out] bytes
* The counter hits bytes number to save.
*
* @return
* 0 on success, a negative errno value otherwise.
*/
int
mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
bool clear, uint64_t *pkts, uint64_t *bytes)
{
const struct mlx5_flow_driver_ops *fops;
struct rte_flow_attr attr = { .transfer = 0 };
if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
return fops->counter_query(dev, cnt, clear, pkts, bytes);
}
DRV_LOG(ERR,
"port %u counter query is not supported.",
dev->data->port_id);
return -ENOTSUP;
}
#define MLX5_POOL_QUERY_FREQ_US 1000000
/**
* Set the periodic procedure for triggering asynchronous batch queries for all
* the counter pools.
*
* @param[in] sh
* Pointer to mlx5_ibv_shared object.
*/
void
mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
{
struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
uint32_t us;
cont = MLX5_CNT_CONTAINER(sh, 1, 0);
pools_n += rte_atomic16_read(&cont->n_valid);
us = MLX5_POOL_QUERY_FREQ_US / pools_n;
DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
sh->cmng.query_thread_on = 0;
DRV_LOG(ERR, "Cannot reinitialize query alarm");
} else {
sh->cmng.query_thread_on = 1;
}
}
/**
* The periodic procedure for triggering asynchronous batch queries for all the
* counter pools. This function is probably called by the host thread.
*
* @param[in] arg
* The parameter for the alarm process.
*/
void
mlx5_flow_query_alarm(void *arg)
{
struct mlx5_ibv_shared *sh = arg;
struct mlx5_devx_obj *dcs;
uint16_t offset;
int ret;
uint8_t batch = sh->cmng.batch;
uint16_t pool_index = sh->cmng.pool_index;
struct mlx5_pools_container *cont;
struct mlx5_pools_container *mcont;
struct mlx5_flow_counter_pool *pool;
if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
goto set_alarm;
next_container:
cont = MLX5_CNT_CONTAINER(sh, batch, 1);
mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
/* Check if resize was done and need to flip a container. */
if (cont != mcont) {
if (cont->pools) {
/* Clean the old container. */
rte_free(cont->pools);
memset(cont, 0, sizeof(*cont));
}
rte_cio_wmb();
/* Flip the host container. */
sh->cmng.mhi[batch] ^= (uint8_t)2;
cont = mcont;
}
if (!cont->pools) {
/* 2 empty containers case is unexpected. */
if (unlikely(batch != sh->cmng.batch))
goto set_alarm;
batch ^= 0x1;
pool_index = 0;
goto next_container;
}
pool = cont->pools[pool_index];
if (pool->raw_hw)
/* There is a pool query in progress. */
goto set_alarm;
pool->raw_hw =
LIST_FIRST(&sh->cmng.free_stat_raws);
if (!pool->raw_hw)
/* No free counter statistics raw memory. */
goto set_alarm;
dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
(&pool->a64_dcs);
offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
offset, NULL, NULL,
pool->raw_hw->mem_mng->dm->id,
(void *)(uintptr_t)
(pool->raw_hw->data + offset),
sh->devx_comp,
(uint64_t)(uintptr_t)pool);
if (ret) {
DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
" %d", pool->min_dcs->id);
pool->raw_hw = NULL;
goto set_alarm;
}
pool->raw_hw->min_dcs_id = dcs->id;
LIST_REMOVE(pool->raw_hw, next);
sh->cmng.pending_queries++;
pool_index++;
if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
batch ^= 0x1;
pool_index = 0;
}
set_alarm:
sh->cmng.batch = batch;
sh->cmng.pool_index = pool_index;
mlx5_set_query_alarm(sh);
}
/**
* Handler for the HW respond about ready values from an asynchronous batch
* query. This function is probably called by the host thread.
*
* @param[in] sh
* The pointer to the shared IB device context.
* @param[in] async_id
* The Devx async ID.
* @param[in] status
* The status of the completion.
*/
void
mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
uint64_t async_id, int status)
{
struct mlx5_flow_counter_pool *pool =
(struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
struct mlx5_counter_stats_raw *raw_to_free;
if (unlikely(status)) {
raw_to_free = pool->raw_hw;
} else {
raw_to_free = pool->raw;
rte_spinlock_lock(&pool->sl);
pool->raw = pool->raw_hw;
rte_spinlock_unlock(&pool->sl);
rte_atomic64_add(&pool->query_gen, 1);
/* Be sure the new raw counters data is updated in memory. */
rte_cio_wmb();
}
LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
pool->raw_hw = NULL;
sh->cmng.pending_queries--;
}
/**
* Translate the rte_flow group index to HW table value.
*
* @param[in] attributes
* Pointer to flow attributes
* @param[in] external
* Value is part of flow rule created by request external to PMD.
* @param[in] group
* rte_flow group index value.
* @param[out] table
* HW table value.
* @param[out] error
* Pointer to error structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
uint32_t group, uint32_t *table,
struct rte_flow_error *error)
{
if (attributes->transfer && external) {
if (group == UINT32_MAX)
return rte_flow_error_set
(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
NULL,
"group index not supported");
*table = group + 1;
} else {
*table = group;
}
return 0;
}
/**
* Discover availability of metadata reg_c's.
*
* Iteratively use test flows to check availability.
*
* @param[in] dev
* Pointer to the Ethernet device structure.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
{
struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
enum modify_reg idx;
int n = 0;
/* reg_c[0] and reg_c[1] are reserved. */
config->flow_mreg_c[n++] = REG_C_0;
config->flow_mreg_c[n++] = REG_C_1;
/* Discover availability of other reg_c's. */
for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
struct rte_flow_attr attr = {
.group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
.priority = MLX5_FLOW_PRIO_RSVD,
.ingress = 1,
};
struct rte_flow_item items[] = {
[0] = {
.type = RTE_FLOW_ITEM_TYPE_END,
},
};
struct rte_flow_action actions[] = {
[0] = {
.type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
.conf = &(struct mlx5_flow_action_copy_mreg){
.src = REG_C_1,
.dst = idx,
},
},
[1] = {
.type = RTE_FLOW_ACTION_TYPE_JUMP,
.conf = &(struct rte_flow_action_jump){
.group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
},
},
[2] = {
.type = RTE_FLOW_ACTION_TYPE_END,
},
};
struct rte_flow *flow;
struct rte_flow_error error;
if (!config->dv_flow_en)
break;
/* Create internal flow, validation skips copy action. */
flow = flow_list_create(dev, NULL, &attr, items,
actions, false, &error);
if (!flow)
continue;
if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
config->flow_mreg_c[n++] = idx;
flow_list_destroy(dev, NULL, flow);
}
for (; n < MLX5_MREG_C_NUM; ++n)
config->flow_mreg_c[n] = REG_NONE;
return 0;
}
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