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linuxdebug/drivers/infiniband/hw/mlx5/fs.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
*/
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_verbs.h>
#include <rdma/uverbs_types.h>
#include <rdma/uverbs_ioctl.h>
#include <rdma/uverbs_std_types.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>
#include <rdma/ib_hdrs.h>
#include <rdma/ib_umem.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/fs.h>
#include <linux/mlx5/fs_helpers.h>
#include <linux/mlx5/eswitch.h>
#include <net/inet_ecn.h>
#include "mlx5_ib.h"
#include "counters.h"
#include "devx.h"
#include "fs.h"
#define UVERBS_MODULE_NAME mlx5_ib
#include <rdma/uverbs_named_ioctl.h>
enum {
MATCH_CRITERIA_ENABLE_OUTER_BIT,
MATCH_CRITERIA_ENABLE_MISC_BIT,
MATCH_CRITERIA_ENABLE_INNER_BIT,
MATCH_CRITERIA_ENABLE_MISC2_BIT
};
#define HEADER_IS_ZERO(match_criteria, headers) \
!(memchr_inv(MLX5_ADDR_OF(fte_match_param, match_criteria, headers), \
0, MLX5_FLD_SZ_BYTES(fte_match_param, headers))) \
static u8 get_match_criteria_enable(u32 *match_criteria)
{
u8 match_criteria_enable;
match_criteria_enable =
(!HEADER_IS_ZERO(match_criteria, outer_headers)) <<
MATCH_CRITERIA_ENABLE_OUTER_BIT;
match_criteria_enable |=
(!HEADER_IS_ZERO(match_criteria, misc_parameters)) <<
MATCH_CRITERIA_ENABLE_MISC_BIT;
match_criteria_enable |=
(!HEADER_IS_ZERO(match_criteria, inner_headers)) <<
MATCH_CRITERIA_ENABLE_INNER_BIT;
match_criteria_enable |=
(!HEADER_IS_ZERO(match_criteria, misc_parameters_2)) <<
MATCH_CRITERIA_ENABLE_MISC2_BIT;
return match_criteria_enable;
}
static int set_proto(void *outer_c, void *outer_v, u8 mask, u8 val)
{
u8 entry_mask;
u8 entry_val;
int err = 0;
if (!mask)
goto out;
entry_mask = MLX5_GET(fte_match_set_lyr_2_4, outer_c,
ip_protocol);
entry_val = MLX5_GET(fte_match_set_lyr_2_4, outer_v,
ip_protocol);
if (!entry_mask) {
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_protocol, mask);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_protocol, val);
goto out;
}
/* Don't override existing ip protocol */
if (mask != entry_mask || val != entry_val)
err = -EINVAL;
out:
return err;
}
static void set_flow_label(void *misc_c, void *misc_v, u32 mask, u32 val,
bool inner)
{
if (inner) {
MLX5_SET(fte_match_set_misc,
misc_c, inner_ipv6_flow_label, mask);
MLX5_SET(fte_match_set_misc,
misc_v, inner_ipv6_flow_label, val);
} else {
MLX5_SET(fte_match_set_misc,
misc_c, outer_ipv6_flow_label, mask);
MLX5_SET(fte_match_set_misc,
misc_v, outer_ipv6_flow_label, val);
}
}
static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
{
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_ecn, mask);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_ecn, val);
MLX5_SET(fte_match_set_lyr_2_4, outer_c, ip_dscp, mask >> 2);
MLX5_SET(fte_match_set_lyr_2_4, outer_v, ip_dscp, val >> 2);
}
static int check_mpls_supp_fields(u32 field_support, const __be32 *set_mask)
{
if (MLX5_GET(fte_match_mpls, set_mask, mpls_label) &&
!(field_support & MLX5_FIELD_SUPPORT_MPLS_LABEL))
return -EOPNOTSUPP;
if (MLX5_GET(fte_match_mpls, set_mask, mpls_exp) &&
!(field_support & MLX5_FIELD_SUPPORT_MPLS_EXP))
return -EOPNOTSUPP;
if (MLX5_GET(fte_match_mpls, set_mask, mpls_s_bos) &&
!(field_support & MLX5_FIELD_SUPPORT_MPLS_S_BOS))
return -EOPNOTSUPP;
if (MLX5_GET(fte_match_mpls, set_mask, mpls_ttl) &&
!(field_support & MLX5_FIELD_SUPPORT_MPLS_TTL))
return -EOPNOTSUPP;
return 0;
}
#define LAST_ETH_FIELD vlan_tag
#define LAST_IB_FIELD sl
#define LAST_IPV4_FIELD tos
#define LAST_IPV6_FIELD traffic_class
#define LAST_TCP_UDP_FIELD src_port
#define LAST_TUNNEL_FIELD tunnel_id
#define LAST_FLOW_TAG_FIELD tag_id
#define LAST_DROP_FIELD size
#define LAST_COUNTERS_FIELD counters
/* Field is the last supported field */
#define FIELDS_NOT_SUPPORTED(filter, field) \
memchr_inv((void *)&filter.field + sizeof(filter.field), 0, \
sizeof(filter) - offsetofend(typeof(filter), field))
int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
bool is_egress,
struct mlx5_flow_act *action)
{
switch (maction->ib_action.type) {
case IB_FLOW_ACTION_UNSPECIFIED:
if (maction->flow_action_raw.sub_type ==
MLX5_IB_FLOW_ACTION_MODIFY_HEADER) {
if (action->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
return -EINVAL;
action->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
action->modify_hdr =
maction->flow_action_raw.modify_hdr;
return 0;
}
if (maction->flow_action_raw.sub_type ==
MLX5_IB_FLOW_ACTION_DECAP) {
if (action->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
return -EINVAL;
action->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
return 0;
}
if (maction->flow_action_raw.sub_type ==
MLX5_IB_FLOW_ACTION_PACKET_REFORMAT) {
if (action->action &
MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
return -EINVAL;
action->action |=
MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
action->pkt_reformat =
maction->flow_action_raw.pkt_reformat;
return 0;
}
fallthrough;
default:
return -EOPNOTSUPP;
}
}
static int parse_flow_attr(struct mlx5_core_dev *mdev,
struct mlx5_flow_spec *spec,
const union ib_flow_spec *ib_spec,
const struct ib_flow_attr *flow_attr,
struct mlx5_flow_act *action, u32 prev_type)
{
struct mlx5_flow_context *flow_context = &spec->flow_context;
u32 *match_c = spec->match_criteria;
u32 *match_v = spec->match_value;
void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters);
void *misc_params_v = MLX5_ADDR_OF(fte_match_param, match_v,
misc_parameters);
void *misc_params2_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters_2);
void *misc_params2_v = MLX5_ADDR_OF(fte_match_param, match_v,
misc_parameters_2);
void *headers_c;
void *headers_v;
int match_ipv;
int ret;
if (ib_spec->type & IB_FLOW_SPEC_INNER) {
headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
inner_headers);
headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
inner_headers);
match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.inner_ip_version);
} else {
headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_ip_version);
}
switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
case IB_FLOW_SPEC_ETH:
if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD))
return -EOPNOTSUPP;
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dmac_47_16),
ib_spec->eth.mask.dst_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dmac_47_16),
ib_spec->eth.val.dst_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
smac_47_16),
ib_spec->eth.mask.src_mac);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
smac_47_16),
ib_spec->eth.val.src_mac);
if (ib_spec->eth.mask.vlan_tag) {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
cvlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
cvlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
first_vid, ntohs(ib_spec->eth.mask.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
first_vid, ntohs(ib_spec->eth.val.vlan_tag));
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
first_cfi,
ntohs(ib_spec->eth.mask.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
first_cfi,
ntohs(ib_spec->eth.val.vlan_tag) >> 12);
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
first_prio,
ntohs(ib_spec->eth.mask.vlan_tag) >> 13);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
first_prio,
ntohs(ib_spec->eth.val.vlan_tag) >> 13);
}
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
ethertype, ntohs(ib_spec->eth.mask.ether_type));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
ethertype, ntohs(ib_spec->eth.val.ether_type));
break;
case IB_FLOW_SPEC_IPV4:
if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD))
return -EOPNOTSUPP;
if (match_ipv) {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
ip_version, 0xf);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
ip_version, MLX5_FS_IPV4_VERSION);
} else {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
ethertype, 0xffff);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
ethertype, ETH_P_IP);
}
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.src_ip,
sizeof(ib_spec->ipv4.mask.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.src_ip,
sizeof(ib_spec->ipv4.val.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.mask.dst_ip,
sizeof(ib_spec->ipv4.mask.dst_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&ib_spec->ipv4.val.dst_ip,
sizeof(ib_spec->ipv4.val.dst_ip));
set_tos(headers_c, headers_v,
ib_spec->ipv4.mask.tos, ib_spec->ipv4.val.tos);
if (set_proto(headers_c, headers_v,
ib_spec->ipv4.mask.proto,
ib_spec->ipv4.val.proto))
return -EINVAL;
break;
case IB_FLOW_SPEC_IPV6:
if (FIELDS_NOT_SUPPORTED(ib_spec->ipv6.mask, LAST_IPV6_FIELD))
return -EOPNOTSUPP;
if (match_ipv) {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
ip_version, 0xf);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
ip_version, MLX5_FS_IPV6_VERSION);
} else {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
ethertype, 0xffff);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
ethertype, ETH_P_IPV6);
}
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.mask.src_ip,
sizeof(ib_spec->ipv6.mask.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.val.src_ip,
sizeof(ib_spec->ipv6.val.src_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.mask.dst_ip,
sizeof(ib_spec->ipv6.mask.dst_ip));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&ib_spec->ipv6.val.dst_ip,
sizeof(ib_spec->ipv6.val.dst_ip));
set_tos(headers_c, headers_v,
ib_spec->ipv6.mask.traffic_class,
ib_spec->ipv6.val.traffic_class);
if (set_proto(headers_c, headers_v,
ib_spec->ipv6.mask.next_hdr,
ib_spec->ipv6.val.next_hdr))
return -EINVAL;
set_flow_label(misc_params_c, misc_params_v,
ntohl(ib_spec->ipv6.mask.flow_label),
ntohl(ib_spec->ipv6.val.flow_label),
ib_spec->type & IB_FLOW_SPEC_INNER);
break;
case IB_FLOW_SPEC_ESP:
return -EOPNOTSUPP;
case IB_FLOW_SPEC_TCP:
if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
LAST_TCP_UDP_FIELD))
return -EOPNOTSUPP;
if (set_proto(headers_c, headers_v, 0xff, IPPROTO_TCP))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
case IB_FLOW_SPEC_UDP:
if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask,
LAST_TCP_UDP_FIELD))
return -EOPNOTSUPP;
if (set_proto(headers_c, headers_v, 0xff, IPPROTO_UDP))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport,
ntohs(ib_spec->tcp_udp.mask.src_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport,
ntohs(ib_spec->tcp_udp.val.src_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport,
ntohs(ib_spec->tcp_udp.mask.dst_port));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport,
ntohs(ib_spec->tcp_udp.val.dst_port));
break;
case IB_FLOW_SPEC_GRE:
if (ib_spec->gre.mask.c_ks_res0_ver)
return -EOPNOTSUPP;
if (set_proto(headers_c, headers_v, 0xff, IPPROTO_GRE))
return -EINVAL;
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
0xff);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
IPPROTO_GRE);
MLX5_SET(fte_match_set_misc, misc_params_c, gre_protocol,
ntohs(ib_spec->gre.mask.protocol));
MLX5_SET(fte_match_set_misc, misc_params_v, gre_protocol,
ntohs(ib_spec->gre.val.protocol));
memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c,
gre_key.nvgre.hi),
&ib_spec->gre.mask.key,
sizeof(ib_spec->gre.mask.key));
memcpy(MLX5_ADDR_OF(fte_match_set_misc, misc_params_v,
gre_key.nvgre.hi),
&ib_spec->gre.val.key,
sizeof(ib_spec->gre.val.key));
break;
case IB_FLOW_SPEC_MPLS:
switch (prev_type) {
case IB_FLOW_SPEC_UDP:
if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_first_mpls_over_udp),
&ib_spec->mpls.mask.tag))
return -EOPNOTSUPP;
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
outer_first_mpls_over_udp),
&ib_spec->mpls.val.tag,
sizeof(ib_spec->mpls.val.tag));
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
outer_first_mpls_over_udp),
&ib_spec->mpls.mask.tag,
sizeof(ib_spec->mpls.mask.tag));
break;
case IB_FLOW_SPEC_GRE:
if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_first_mpls_over_gre),
&ib_spec->mpls.mask.tag))
return -EOPNOTSUPP;
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
outer_first_mpls_over_gre),
&ib_spec->mpls.val.tag,
sizeof(ib_spec->mpls.val.tag));
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
outer_first_mpls_over_gre),
&ib_spec->mpls.mask.tag,
sizeof(ib_spec->mpls.mask.tag));
break;
default:
if (ib_spec->type & IB_FLOW_SPEC_INNER) {
if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.inner_first_mpls),
&ib_spec->mpls.mask.tag))
return -EOPNOTSUPP;
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
inner_first_mpls),
&ib_spec->mpls.val.tag,
sizeof(ib_spec->mpls.val.tag));
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
inner_first_mpls),
&ib_spec->mpls.mask.tag,
sizeof(ib_spec->mpls.mask.tag));
} else {
if (check_mpls_supp_fields(MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_first_mpls),
&ib_spec->mpls.mask.tag))
return -EOPNOTSUPP;
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_v,
outer_first_mpls),
&ib_spec->mpls.val.tag,
sizeof(ib_spec->mpls.val.tag));
memcpy(MLX5_ADDR_OF(fte_match_set_misc2, misc_params2_c,
outer_first_mpls),
&ib_spec->mpls.mask.tag,
sizeof(ib_spec->mpls.mask.tag));
}
}
break;
case IB_FLOW_SPEC_VXLAN_TUNNEL:
if (FIELDS_NOT_SUPPORTED(ib_spec->tunnel.mask,
LAST_TUNNEL_FIELD))
return -EOPNOTSUPP;
MLX5_SET(fte_match_set_misc, misc_params_c, vxlan_vni,
ntohl(ib_spec->tunnel.mask.tunnel_id));
MLX5_SET(fte_match_set_misc, misc_params_v, vxlan_vni,
ntohl(ib_spec->tunnel.val.tunnel_id));
break;
case IB_FLOW_SPEC_ACTION_TAG:
if (FIELDS_NOT_SUPPORTED(ib_spec->flow_tag,
LAST_FLOW_TAG_FIELD))
return -EOPNOTSUPP;
if (ib_spec->flow_tag.tag_id >= BIT(24))
return -EINVAL;
flow_context->flow_tag = ib_spec->flow_tag.tag_id;
flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
break;
case IB_FLOW_SPEC_ACTION_DROP:
if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
LAST_DROP_FIELD))
return -EOPNOTSUPP;
action->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
break;
case IB_FLOW_SPEC_ACTION_HANDLE:
ret = parse_flow_flow_action(to_mflow_act(ib_spec->action.act),
flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS, action);
if (ret)
return ret;
break;
case IB_FLOW_SPEC_ACTION_COUNT:
if (FIELDS_NOT_SUPPORTED(ib_spec->flow_count,
LAST_COUNTERS_FIELD))
return -EOPNOTSUPP;
/* for now support only one counters spec per flow */
if (action->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
return -EINVAL;
action->counters = ib_spec->flow_count.counters;
action->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
break;
default:
return -EINVAL;
}
return 0;
}
/* If a flow could catch both multicast and unicast packets,
* it won't fall into the multicast flow steering table and this rule
* could steal other multicast packets.
*/
static bool flow_is_multicast_only(const struct ib_flow_attr *ib_attr)
{
union ib_flow_spec *flow_spec;
if (ib_attr->type != IB_FLOW_ATTR_NORMAL ||
ib_attr->num_of_specs < 1)
return false;
flow_spec = (union ib_flow_spec *)(ib_attr + 1);
if (flow_spec->type == IB_FLOW_SPEC_IPV4) {
struct ib_flow_spec_ipv4 *ipv4_spec;
ipv4_spec = (struct ib_flow_spec_ipv4 *)flow_spec;
if (ipv4_is_multicast(ipv4_spec->val.dst_ip))
return true;
return false;
}
if (flow_spec->type == IB_FLOW_SPEC_ETH) {
struct ib_flow_spec_eth *eth_spec;
eth_spec = (struct ib_flow_spec_eth *)flow_spec;
return is_multicast_ether_addr(eth_spec->mask.dst_mac) &&
is_multicast_ether_addr(eth_spec->val.dst_mac);
}
return false;
}
static bool is_valid_ethertype(struct mlx5_core_dev *mdev,
const struct ib_flow_attr *flow_attr,
bool check_inner)
{
union ib_flow_spec *ib_spec = (union ib_flow_spec *)(flow_attr + 1);
int match_ipv = check_inner ?
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.inner_ip_version) :
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_ip_version);
int inner_bit = check_inner ? IB_FLOW_SPEC_INNER : 0;
bool ipv4_spec_valid, ipv6_spec_valid;
unsigned int ip_spec_type = 0;
bool has_ethertype = false;
unsigned int spec_index;
bool mask_valid = true;
u16 eth_type = 0;
bool type_valid;
/* Validate that ethertype is correct */
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
if ((ib_spec->type == (IB_FLOW_SPEC_ETH | inner_bit)) &&
ib_spec->eth.mask.ether_type) {
mask_valid = (ib_spec->eth.mask.ether_type ==
htons(0xffff));
has_ethertype = true;
eth_type = ntohs(ib_spec->eth.val.ether_type);
} else if ((ib_spec->type == (IB_FLOW_SPEC_IPV4 | inner_bit)) ||
(ib_spec->type == (IB_FLOW_SPEC_IPV6 | inner_bit))) {
ip_spec_type = ib_spec->type;
}
ib_spec = (void *)ib_spec + ib_spec->size;
}
type_valid = (!has_ethertype) || (!ip_spec_type);
if (!type_valid && mask_valid) {
ipv4_spec_valid = (eth_type == ETH_P_IP) &&
(ip_spec_type == (IB_FLOW_SPEC_IPV4 | inner_bit));
ipv6_spec_valid = (eth_type == ETH_P_IPV6) &&
(ip_spec_type == (IB_FLOW_SPEC_IPV6 | inner_bit));
type_valid = (ipv4_spec_valid) || (ipv6_spec_valid) ||
(((eth_type == ETH_P_MPLS_UC) ||
(eth_type == ETH_P_MPLS_MC)) && match_ipv);
}
return type_valid;
}
static bool is_valid_attr(struct mlx5_core_dev *mdev,
const struct ib_flow_attr *flow_attr)
{
return is_valid_ethertype(mdev, flow_attr, false) &&
is_valid_ethertype(mdev, flow_attr, true);
}
static void put_flow_table(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *prio, bool ft_added)
{
prio->refcount -= !!ft_added;
if (!prio->refcount) {
mlx5_destroy_flow_table(prio->flow_table);
prio->flow_table = NULL;
}
}
static int mlx5_ib_destroy_flow(struct ib_flow *flow_id)
{
struct mlx5_ib_flow_handler *handler = container_of(flow_id,
struct mlx5_ib_flow_handler,
ibflow);
struct mlx5_ib_flow_handler *iter, *tmp;
struct mlx5_ib_dev *dev = handler->dev;
mutex_lock(&dev->flow_db->lock);
list_for_each_entry_safe(iter, tmp, &handler->list, list) {
mlx5_del_flow_rules(iter->rule);
put_flow_table(dev, iter->prio, true);
list_del(&iter->list);
kfree(iter);
}
mlx5_del_flow_rules(handler->rule);
put_flow_table(dev, handler->prio, true);
mlx5_ib_counters_clear_description(handler->ibcounters);
mutex_unlock(&dev->flow_db->lock);
if (handler->flow_matcher)
atomic_dec(&handler->flow_matcher->usecnt);
kfree(handler);
return 0;
}
static int ib_prio_to_core_prio(unsigned int priority, bool dont_trap)
{
priority *= 2;
if (!dont_trap)
priority++;
return priority;
}
enum flow_table_type {
MLX5_IB_FT_RX,
MLX5_IB_FT_TX
};
#define MLX5_FS_MAX_TYPES 6
#define MLX5_FS_MAX_ENTRIES BIT(16)
static bool mlx5_ib_shared_ft_allowed(struct ib_device *device)
{
struct mlx5_ib_dev *dev = to_mdev(device);
return MLX5_CAP_GEN(dev->mdev, shared_object_to_user_object_allowed);
}
static struct mlx5_ib_flow_prio *_get_prio(struct mlx5_ib_dev *dev,
struct mlx5_flow_namespace *ns,
struct mlx5_ib_flow_prio *prio,
int priority,
int num_entries, int num_groups,
u32 flags)
{
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_flow_table *ft;
ft_attr.prio = priority;
ft_attr.max_fte = num_entries;
ft_attr.flags = flags;
ft_attr.autogroup.max_num_groups = num_groups;
ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
if (IS_ERR(ft))
return ERR_CAST(ft);
prio->flow_table = ft;
prio->refcount = 0;
return prio;
}
static struct mlx5_ib_flow_prio *get_flow_table(struct mlx5_ib_dev *dev,
struct ib_flow_attr *flow_attr,
enum flow_table_type ft_type)
{
bool dont_trap = flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP;
struct mlx5_flow_namespace *ns = NULL;
enum mlx5_flow_namespace_type fn_type;
struct mlx5_ib_flow_prio *prio;
struct mlx5_flow_table *ft;
int max_table_size;
int num_entries;
int num_groups;
bool esw_encap;
u32 flags = 0;
int priority;
max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
log_max_ft_size));
esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
DEVLINK_ESWITCH_ENCAP_MODE_NONE;
switch (flow_attr->type) {
case IB_FLOW_ATTR_NORMAL:
if (flow_is_multicast_only(flow_attr) && !dont_trap)
priority = MLX5_IB_FLOW_MCAST_PRIO;
else
priority = ib_prio_to_core_prio(flow_attr->priority,
dont_trap);
if (ft_type == MLX5_IB_FT_RX) {
fn_type = MLX5_FLOW_NAMESPACE_BYPASS;
prio = &dev->flow_db->prios[priority];
if (!dev->is_rep && !esw_encap &&
MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap))
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
if (!dev->is_rep && !esw_encap &&
MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
reformat_l3_tunnel_to_l2))
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
} else {
max_table_size = BIT(MLX5_CAP_FLOWTABLE_NIC_TX(
dev->mdev, log_max_ft_size));
fn_type = MLX5_FLOW_NAMESPACE_EGRESS;
prio = &dev->flow_db->egress_prios[priority];
if (!dev->is_rep && !esw_encap &&
MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat))
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
}
ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
num_entries = MLX5_FS_MAX_ENTRIES;
num_groups = MLX5_FS_MAX_TYPES;
break;
case IB_FLOW_ATTR_ALL_DEFAULT:
case IB_FLOW_ATTR_MC_DEFAULT:
ns = mlx5_get_flow_namespace(dev->mdev,
MLX5_FLOW_NAMESPACE_LEFTOVERS);
build_leftovers_ft_param(&priority, &num_entries, &num_groups);
prio = &dev->flow_db->prios[MLX5_IB_FLOW_LEFTOVERS_PRIO];
break;
case IB_FLOW_ATTR_SNIFFER:
if (!MLX5_CAP_FLOWTABLE(dev->mdev,
allow_sniffer_and_nic_rx_shared_tir))
return ERR_PTR(-EOPNOTSUPP);
ns = mlx5_get_flow_namespace(
dev->mdev, ft_type == MLX5_IB_FT_RX ?
MLX5_FLOW_NAMESPACE_SNIFFER_RX :
MLX5_FLOW_NAMESPACE_SNIFFER_TX);
prio = &dev->flow_db->sniffer[ft_type];
priority = 0;
num_entries = 1;
num_groups = 1;
break;
default:
break;
}
if (!ns)
return ERR_PTR(-EOPNOTSUPP);
max_table_size = min_t(int, num_entries, max_table_size);
ft = prio->flow_table;
if (!ft)
return _get_prio(dev, ns, prio, priority, max_table_size,
num_groups, flags);
return prio;
}
enum {
RDMA_RX_ECN_OPCOUNTER_PRIO,
RDMA_RX_CNP_OPCOUNTER_PRIO,
};
enum {
RDMA_TX_CNP_OPCOUNTER_PRIO,
};
static int set_vhca_port_spec(struct mlx5_ib_dev *dev, u32 port_num,
struct mlx5_flow_spec *spec)
{
if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
ft_field_support.source_vhca_port) ||
!MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
ft_field_support.source_vhca_port))
return -EOPNOTSUPP;
MLX5_SET_TO_ONES(fte_match_param, &spec->match_criteria,
misc_parameters.source_vhca_port);
MLX5_SET(fte_match_param, &spec->match_value,
misc_parameters.source_vhca_port, port_num);
return 0;
}
static int set_ecn_ce_spec(struct mlx5_ib_dev *dev, u32 port_num,
struct mlx5_flow_spec *spec, int ipv)
{
if (!MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev,
ft_field_support.outer_ip_version))
return -EOPNOTSUPP;
if (mlx5_core_mp_enabled(dev->mdev) &&
set_vhca_port_spec(dev, port_num, spec))
return -EOPNOTSUPP;
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
outer_headers.ip_ecn);
MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_ecn,
INET_ECN_CE);
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
outer_headers.ip_version);
MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_version,
ipv);
spec->match_criteria_enable =
get_match_criteria_enable(spec->match_criteria);
return 0;
}
static int set_cnp_spec(struct mlx5_ib_dev *dev, u32 port_num,
struct mlx5_flow_spec *spec)
{
if (mlx5_core_mp_enabled(dev->mdev) &&
set_vhca_port_spec(dev, port_num, spec))
return -EOPNOTSUPP;
MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
misc_parameters.bth_opcode);
MLX5_SET(fte_match_param, spec->match_value, misc_parameters.bth_opcode,
IB_BTH_OPCODE_CNP);
spec->match_criteria_enable =
get_match_criteria_enable(spec->match_criteria);
return 0;
}
int mlx5_ib_fs_add_op_fc(struct mlx5_ib_dev *dev, u32 port_num,
struct mlx5_ib_op_fc *opfc,
enum mlx5_ib_optional_counter_type type)
{
enum mlx5_flow_namespace_type fn_type;
int priority, i, err, spec_num;
struct mlx5_flow_act flow_act = {};
struct mlx5_flow_destination dst;
struct mlx5_flow_namespace *ns;
struct mlx5_ib_flow_prio *prio;
struct mlx5_flow_spec *spec;
spec = kcalloc(MAX_OPFC_RULES, sizeof(*spec), GFP_KERNEL);
if (!spec)
return -ENOMEM;
switch (type) {
case MLX5_IB_OPCOUNTER_CC_RX_CE_PKTS:
if (set_ecn_ce_spec(dev, port_num, &spec[0],
MLX5_FS_IPV4_VERSION) ||
set_ecn_ce_spec(dev, port_num, &spec[1],
MLX5_FS_IPV6_VERSION)) {
err = -EOPNOTSUPP;
goto free;
}
spec_num = 2;
fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
priority = RDMA_RX_ECN_OPCOUNTER_PRIO;
break;
case MLX5_IB_OPCOUNTER_CC_RX_CNP_PKTS:
if (!MLX5_CAP_FLOWTABLE(dev->mdev,
ft_field_support_2_nic_receive_rdma.bth_opcode) ||
set_cnp_spec(dev, port_num, &spec[0])) {
err = -EOPNOTSUPP;
goto free;
}
spec_num = 1;
fn_type = MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS;
priority = RDMA_RX_CNP_OPCOUNTER_PRIO;
break;
case MLX5_IB_OPCOUNTER_CC_TX_CNP_PKTS:
if (!MLX5_CAP_FLOWTABLE(dev->mdev,
ft_field_support_2_nic_transmit_rdma.bth_opcode) ||
set_cnp_spec(dev, port_num, &spec[0])) {
err = -EOPNOTSUPP;
goto free;
}
spec_num = 1;
fn_type = MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS;
priority = RDMA_TX_CNP_OPCOUNTER_PRIO;
break;
default:
err = -EOPNOTSUPP;
goto free;
}
ns = mlx5_get_flow_namespace(dev->mdev, fn_type);
if (!ns) {
err = -EOPNOTSUPP;
goto free;
}
prio = &dev->flow_db->opfcs[type];
if (!prio->flow_table) {
prio = _get_prio(dev, ns, prio, priority,
dev->num_ports * MAX_OPFC_RULES, 1, 0);
if (IS_ERR(prio)) {
err = PTR_ERR(prio);
goto free;
}
}
dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dst.counter_id = mlx5_fc_id(opfc->fc);
flow_act.action =
MLX5_FLOW_CONTEXT_ACTION_COUNT | MLX5_FLOW_CONTEXT_ACTION_ALLOW;
for (i = 0; i < spec_num; i++) {
opfc->rule[i] = mlx5_add_flow_rules(prio->flow_table, &spec[i],
&flow_act, &dst, 1);
if (IS_ERR(opfc->rule[i])) {
err = PTR_ERR(opfc->rule[i]);
goto del_rules;
}
}
prio->refcount += spec_num;
kfree(spec);
return 0;
del_rules:
for (i -= 1; i >= 0; i--)
mlx5_del_flow_rules(opfc->rule[i]);
put_flow_table(dev, prio, false);
free:
kfree(spec);
return err;
}
void mlx5_ib_fs_remove_op_fc(struct mlx5_ib_dev *dev,
struct mlx5_ib_op_fc *opfc,
enum mlx5_ib_optional_counter_type type)
{
int i;
for (i = 0; i < MAX_OPFC_RULES && opfc->rule[i]; i++) {
mlx5_del_flow_rules(opfc->rule[i]);
put_flow_table(dev, &dev->flow_db->opfcs[type], true);
}
}
static void set_underlay_qp(struct mlx5_ib_dev *dev,
struct mlx5_flow_spec *spec,
u32 underlay_qpn)
{
void *misc_params_c = MLX5_ADDR_OF(fte_match_param,
spec->match_criteria,
misc_parameters);
void *misc_params_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
if (underlay_qpn &&
MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
ft_field_support.bth_dst_qp)) {
MLX5_SET(fte_match_set_misc,
misc_params_v, bth_dst_qp, underlay_qpn);
MLX5_SET(fte_match_set_misc,
misc_params_c, bth_dst_qp, 0xffffff);
}
}
static void mlx5_ib_set_rule_source_port(struct mlx5_ib_dev *dev,
struct mlx5_flow_spec *spec,
struct mlx5_eswitch_rep *rep)
{
struct mlx5_eswitch *esw = dev->mdev->priv.eswitch;
void *misc;
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_for_match(rep->esw,
rep->vport));
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
} else {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, rep->vport);
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
}
}
static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
const struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst,
u32 underlay_qpn,
struct mlx5_ib_create_flow *ucmd)
{
struct mlx5_flow_table *ft = ft_prio->flow_table;
struct mlx5_ib_flow_handler *handler;
struct mlx5_flow_act flow_act = {};
struct mlx5_flow_spec *spec;
struct mlx5_flow_destination dest_arr[2] = {};
struct mlx5_flow_destination *rule_dst = dest_arr;
const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
unsigned int spec_index;
u32 prev_type = 0;
int err = 0;
int dest_num = 0;
bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
if (!is_valid_attr(dev->mdev, flow_attr))
return ERR_PTR(-EINVAL);
if (dev->is_rep && is_egress)
return ERR_PTR(-EINVAL);
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
handler = kzalloc(sizeof(*handler), GFP_KERNEL);
if (!handler || !spec) {
err = -ENOMEM;
goto free;
}
INIT_LIST_HEAD(&handler->list);
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
err = parse_flow_attr(dev->mdev, spec,
ib_flow, flow_attr, &flow_act,
prev_type);
if (err < 0)
goto free;
prev_type = ((union ib_flow_spec *)ib_flow)->type;
ib_flow += ((union ib_flow_spec *)ib_flow)->size;
}
if (dst && !(flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP)) {
memcpy(&dest_arr[0], dst, sizeof(*dst));
dest_num++;
}
if (!flow_is_multicast_only(flow_attr))
set_underlay_qp(dev, spec, underlay_qpn);
if (dev->is_rep && flow_attr->type != IB_FLOW_ATTR_SNIFFER) {
struct mlx5_eswitch_rep *rep;
rep = dev->port[flow_attr->port - 1].rep;
if (!rep) {
err = -EINVAL;
goto free;
}
mlx5_ib_set_rule_source_port(dev, spec, rep);
}
spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
struct mlx5_ib_mcounters *mcounters;
err = mlx5_ib_flow_counters_set_data(flow_act.counters, ucmd);
if (err)
goto free;
mcounters = to_mcounters(flow_act.counters);
handler->ibcounters = flow_act.counters;
dest_arr[dest_num].type =
MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dest_arr[dest_num].counter_id =
mlx5_fc_id(mcounters->hw_cntrs_hndl);
dest_num++;
}
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DROP) {
if (!dest_num)
rule_dst = NULL;
} else {
if (flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP)
flow_act.action |=
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
if (is_egress)
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
else if (dest_num)
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
}
if ((spec->flow_context.flags & FLOW_CONTEXT_HAS_TAG) &&
(flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
mlx5_ib_warn(dev, "Flow tag %u and attribute type %x isn't allowed in leftovers\n",
spec->flow_context.flow_tag, flow_attr->type);
err = -EINVAL;
goto free;
}
handler->rule = mlx5_add_flow_rules(ft, spec,
&flow_act,
rule_dst, dest_num);
if (IS_ERR(handler->rule)) {
err = PTR_ERR(handler->rule);
goto free;
}
ft_prio->refcount++;
handler->prio = ft_prio;
handler->dev = dev;
ft_prio->flow_table = ft;
free:
if (err && handler) {
mlx5_ib_counters_clear_description(handler->ibcounters);
kfree(handler);
}
kvfree(spec);
return err ? ERR_PTR(err) : handler;
}
static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
const struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
return _create_flow_rule(dev, ft_prio, flow_attr, dst, 0, NULL);
}
enum {
LEFTOVERS_MC,
LEFTOVERS_UC,
};
static struct mlx5_ib_flow_handler *create_leftovers_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct ib_flow_attr *flow_attr,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_ucast = NULL;
struct mlx5_ib_flow_handler *handler = NULL;
static struct {
struct ib_flow_attr flow_attr;
struct ib_flow_spec_eth eth_flow;
} leftovers_specs[] = {
[LEFTOVERS_MC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {0x1} }
}
},
[LEFTOVERS_UC] = {
.flow_attr = {
.num_of_specs = 1,
.size = sizeof(leftovers_specs[0])
},
.eth_flow = {
.type = IB_FLOW_SPEC_ETH,
.size = sizeof(struct ib_flow_spec_eth),
.mask = {.dst_mac = {0x1} },
.val = {.dst_mac = {} }
}
}
};
handler = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_MC].flow_attr,
dst);
if (!IS_ERR(handler) &&
flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT) {
handler_ucast = create_flow_rule(dev, ft_prio,
&leftovers_specs[LEFTOVERS_UC].flow_attr,
dst);
if (IS_ERR(handler_ucast)) {
mlx5_del_flow_rules(handler->rule);
ft_prio->refcount--;
kfree(handler);
handler = handler_ucast;
} else {
list_add(&handler_ucast->list, &handler->list);
}
}
return handler;
}
static struct mlx5_ib_flow_handler *create_sniffer_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_rx,
struct mlx5_ib_flow_prio *ft_tx,
struct mlx5_flow_destination *dst)
{
struct mlx5_ib_flow_handler *handler_rx;
struct mlx5_ib_flow_handler *handler_tx;
int err;
static const struct ib_flow_attr flow_attr = {
.num_of_specs = 0,
.type = IB_FLOW_ATTR_SNIFFER,
.size = sizeof(flow_attr)
};
handler_rx = create_flow_rule(dev, ft_rx, &flow_attr, dst);
if (IS_ERR(handler_rx)) {
err = PTR_ERR(handler_rx);
goto err;
}
handler_tx = create_flow_rule(dev, ft_tx, &flow_attr, dst);
if (IS_ERR(handler_tx)) {
err = PTR_ERR(handler_tx);
goto err_tx;
}
list_add(&handler_tx->list, &handler_rx->list);
return handler_rx;
err_tx:
mlx5_del_flow_rules(handler_rx->rule);
ft_rx->refcount--;
kfree(handler_rx);
err:
return ERR_PTR(err);
}
static struct ib_flow *mlx5_ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr,
struct ib_udata *udata)
{
struct mlx5_ib_dev *dev = to_mdev(qp->device);
struct mlx5_ib_qp *mqp = to_mqp(qp);
struct mlx5_ib_flow_handler *handler = NULL;
struct mlx5_flow_destination *dst = NULL;
struct mlx5_ib_flow_prio *ft_prio_tx = NULL;
struct mlx5_ib_flow_prio *ft_prio;
bool is_egress = flow_attr->flags & IB_FLOW_ATTR_FLAGS_EGRESS;
struct mlx5_ib_create_flow *ucmd = NULL, ucmd_hdr;
size_t min_ucmd_sz, required_ucmd_sz;
int err;
int underlay_qpn;
if (udata && udata->inlen) {
min_ucmd_sz = offsetofend(struct mlx5_ib_create_flow, reserved);
if (udata->inlen < min_ucmd_sz)
return ERR_PTR(-EOPNOTSUPP);
err = ib_copy_from_udata(&ucmd_hdr, udata, min_ucmd_sz);
if (err)
return ERR_PTR(err);
/* currently supports only one counters data */
if (ucmd_hdr.ncounters_data > 1)
return ERR_PTR(-EINVAL);
required_ucmd_sz = min_ucmd_sz +
sizeof(struct mlx5_ib_flow_counters_data) *
ucmd_hdr.ncounters_data;
if (udata->inlen > required_ucmd_sz &&
!ib_is_udata_cleared(udata, required_ucmd_sz,
udata->inlen - required_ucmd_sz))
return ERR_PTR(-EOPNOTSUPP);
ucmd = kzalloc(required_ucmd_sz, GFP_KERNEL);
if (!ucmd)
return ERR_PTR(-ENOMEM);
err = ib_copy_from_udata(ucmd, udata, required_ucmd_sz);
if (err)
goto free_ucmd;
}
if (flow_attr->priority > MLX5_IB_FLOW_LAST_PRIO) {
err = -ENOMEM;
goto free_ucmd;
}
if (flow_attr->flags &
~(IB_FLOW_ATTR_FLAGS_DONT_TRAP | IB_FLOW_ATTR_FLAGS_EGRESS)) {
err = -EINVAL;
goto free_ucmd;
}
if (is_egress &&
(flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
flow_attr->type == IB_FLOW_ATTR_MC_DEFAULT)) {
err = -EINVAL;
goto free_ucmd;
}
dst = kzalloc(sizeof(*dst), GFP_KERNEL);
if (!dst) {
err = -ENOMEM;
goto free_ucmd;
}
mutex_lock(&dev->flow_db->lock);
ft_prio = get_flow_table(dev, flow_attr,
is_egress ? MLX5_IB_FT_TX : MLX5_IB_FT_RX);
if (IS_ERR(ft_prio)) {
err = PTR_ERR(ft_prio);
goto unlock;
}
if (flow_attr->type == IB_FLOW_ATTR_SNIFFER) {
ft_prio_tx = get_flow_table(dev, flow_attr, MLX5_IB_FT_TX);
if (IS_ERR(ft_prio_tx)) {
err = PTR_ERR(ft_prio_tx);
ft_prio_tx = NULL;
goto destroy_ft;
}
}
if (is_egress) {
dst->type = MLX5_FLOW_DESTINATION_TYPE_PORT;
} else {
dst->type = MLX5_FLOW_DESTINATION_TYPE_TIR;
if (mqp->is_rss)
dst->tir_num = mqp->rss_qp.tirn;
else
dst->tir_num = mqp->raw_packet_qp.rq.tirn;
}
switch (flow_attr->type) {
case IB_FLOW_ATTR_NORMAL:
underlay_qpn = (mqp->flags & IB_QP_CREATE_SOURCE_QPN) ?
mqp->underlay_qpn :
0;
handler = _create_flow_rule(dev, ft_prio, flow_attr, dst,
underlay_qpn, ucmd);
break;
case IB_FLOW_ATTR_ALL_DEFAULT:
case IB_FLOW_ATTR_MC_DEFAULT:
handler = create_leftovers_rule(dev, ft_prio, flow_attr, dst);
break;
case IB_FLOW_ATTR_SNIFFER:
handler = create_sniffer_rule(dev, ft_prio, ft_prio_tx, dst);
break;
default:
err = -EINVAL;
goto destroy_ft;
}
if (IS_ERR(handler)) {
err = PTR_ERR(handler);
handler = NULL;
goto destroy_ft;
}
mutex_unlock(&dev->flow_db->lock);
kfree(dst);
kfree(ucmd);
return &handler->ibflow;
destroy_ft:
put_flow_table(dev, ft_prio, false);
if (ft_prio_tx)
put_flow_table(dev, ft_prio_tx, false);
unlock:
mutex_unlock(&dev->flow_db->lock);
kfree(dst);
free_ucmd:
kfree(ucmd);
return ERR_PTR(err);
}
static struct mlx5_ib_flow_prio *
_get_flow_table(struct mlx5_ib_dev *dev, u16 user_priority,
enum mlx5_flow_namespace_type ns_type,
bool mcast)
{
struct mlx5_flow_namespace *ns = NULL;
struct mlx5_ib_flow_prio *prio = NULL;
int max_table_size = 0;
bool esw_encap;
u32 flags = 0;
int priority;
if (mcast)
priority = MLX5_IB_FLOW_MCAST_PRIO;
else
priority = ib_prio_to_core_prio(user_priority, false);
esw_encap = mlx5_eswitch_get_encap_mode(dev->mdev) !=
DEVLINK_ESWITCH_ENCAP_MODE_NONE;
switch (ns_type) {
case MLX5_FLOW_NAMESPACE_BYPASS:
max_table_size = BIT(
MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, log_max_ft_size));
if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev, decap) && !esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
if (MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
reformat_l3_tunnel_to_l2) &&
!esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
break;
case MLX5_FLOW_NAMESPACE_EGRESS:
max_table_size = BIT(
MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, log_max_ft_size));
if (MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev, reformat) &&
!esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
break;
case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
max_table_size = BIT(
MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, log_max_ft_size));
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev, decap) && esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_DECAP;
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev->mdev,
reformat_l3_tunnel_to_l2) &&
esw_encap)
flags |= MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT;
priority = user_priority;
break;
case MLX5_FLOW_NAMESPACE_RDMA_RX:
max_table_size = BIT(
MLX5_CAP_FLOWTABLE_RDMA_RX(dev->mdev, log_max_ft_size));
priority = user_priority;
break;
case MLX5_FLOW_NAMESPACE_RDMA_TX:
max_table_size = BIT(
MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev, log_max_ft_size));
priority = user_priority;
break;
default:
break;
}
max_table_size = min_t(int, max_table_size, MLX5_FS_MAX_ENTRIES);
ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
if (!ns)
return ERR_PTR(-EOPNOTSUPP);
switch (ns_type) {
case MLX5_FLOW_NAMESPACE_BYPASS:
prio = &dev->flow_db->prios[priority];
break;
case MLX5_FLOW_NAMESPACE_EGRESS:
prio = &dev->flow_db->egress_prios[priority];
break;
case MLX5_FLOW_NAMESPACE_FDB_BYPASS:
prio = &dev->flow_db->fdb[priority];
break;
case MLX5_FLOW_NAMESPACE_RDMA_RX:
prio = &dev->flow_db->rdma_rx[priority];
break;
case MLX5_FLOW_NAMESPACE_RDMA_TX:
prio = &dev->flow_db->rdma_tx[priority];
break;
default: return ERR_PTR(-EINVAL);
}
if (!prio)
return ERR_PTR(-EINVAL);
if (prio->flow_table)
return prio;
return _get_prio(dev, ns, prio, priority, max_table_size,
MLX5_FS_MAX_TYPES, flags);
}
static struct mlx5_ib_flow_handler *
_create_raw_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
struct mlx5_flow_destination *dst,
struct mlx5_ib_flow_matcher *fs_matcher,
struct mlx5_flow_context *flow_context,
struct mlx5_flow_act *flow_act,
void *cmd_in, int inlen,
int dst_num)
{
struct mlx5_ib_flow_handler *handler;
struct mlx5_flow_spec *spec;
struct mlx5_flow_table *ft = ft_prio->flow_table;
int err = 0;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
handler = kzalloc(sizeof(*handler), GFP_KERNEL);
if (!handler || !spec) {
err = -ENOMEM;
goto free;
}
INIT_LIST_HEAD(&handler->list);
memcpy(spec->match_value, cmd_in, inlen);
memcpy(spec->match_criteria, fs_matcher->matcher_mask.match_params,
fs_matcher->mask_len);
spec->match_criteria_enable = fs_matcher->match_criteria_enable;
spec->flow_context = *flow_context;
handler->rule = mlx5_add_flow_rules(ft, spec,
flow_act, dst, dst_num);
if (IS_ERR(handler->rule)) {
err = PTR_ERR(handler->rule);
goto free;
}
ft_prio->refcount++;
handler->prio = ft_prio;
handler->dev = dev;
ft_prio->flow_table = ft;
free:
if (err)
kfree(handler);
kvfree(spec);
return err ? ERR_PTR(err) : handler;
}
static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
void *match_v)
{
void *match_c;
void *match_v_set_lyr_2_4, *match_c_set_lyr_2_4;
void *dmac, *dmac_mask;
void *ipv4, *ipv4_mask;
if (!(fs_matcher->match_criteria_enable &
(1 << MATCH_CRITERIA_ENABLE_OUTER_BIT)))
return false;
match_c = fs_matcher->matcher_mask.match_params;
match_v_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
match_c_set_lyr_2_4 = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
dmac = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
dmac_47_16);
dmac_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
dmac_47_16);
if (is_multicast_ether_addr(dmac) &&
is_multicast_ether_addr(dmac_mask))
return true;
ipv4 = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_v_set_lyr_2_4,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
ipv4_mask = MLX5_ADDR_OF(fte_match_set_lyr_2_4, match_c_set_lyr_2_4,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
if (ipv4_is_multicast(*(__be32 *)(ipv4)) &&
ipv4_is_multicast(*(__be32 *)(ipv4_mask)))
return true;
return false;
}
static struct mlx5_ib_flow_handler *raw_fs_rule_add(
struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
struct mlx5_flow_context *flow_context, struct mlx5_flow_act *flow_act,
u32 counter_id, void *cmd_in, int inlen, int dest_id, int dest_type)
{
struct mlx5_flow_destination *dst;
struct mlx5_ib_flow_prio *ft_prio;
struct mlx5_ib_flow_handler *handler;
int dst_num = 0;
bool mcast;
int err;
if (fs_matcher->flow_type != MLX5_IB_FLOW_TYPE_NORMAL)
return ERR_PTR(-EOPNOTSUPP);
if (fs_matcher->priority > MLX5_IB_FLOW_LAST_PRIO)
return ERR_PTR(-ENOMEM);
dst = kcalloc(2, sizeof(*dst), GFP_KERNEL);
if (!dst)
return ERR_PTR(-ENOMEM);
mcast = raw_fs_is_multicast(fs_matcher, cmd_in);
mutex_lock(&dev->flow_db->lock);
ft_prio = _get_flow_table(dev, fs_matcher->priority,
fs_matcher->ns_type, mcast);
if (IS_ERR(ft_prio)) {
err = PTR_ERR(ft_prio);
goto unlock;
}
switch (dest_type) {
case MLX5_FLOW_DESTINATION_TYPE_TIR:
dst[dst_num].type = dest_type;
dst[dst_num++].tir_num = dest_id;
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
break;
case MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE:
dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM;
dst[dst_num++].ft_num = dest_id;
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
break;
case MLX5_FLOW_DESTINATION_TYPE_PORT:
dst[dst_num++].type = MLX5_FLOW_DESTINATION_TYPE_PORT;
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_ALLOW;
break;
default:
break;
}
if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dst[dst_num].counter_id = counter_id;
dst_num++;
}
handler = _create_raw_flow_rule(dev, ft_prio, dst_num ? dst : NULL,
fs_matcher, flow_context, flow_act,
cmd_in, inlen, dst_num);
if (IS_ERR(handler)) {
err = PTR_ERR(handler);
goto destroy_ft;
}
mutex_unlock(&dev->flow_db->lock);
atomic_inc(&fs_matcher->usecnt);
handler->flow_matcher = fs_matcher;
kfree(dst);
return handler;
destroy_ft:
put_flow_table(dev, ft_prio, false);
unlock:
mutex_unlock(&dev->flow_db->lock);
kfree(dst);
return ERR_PTR(err);
}
static void destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
{
switch (maction->flow_action_raw.sub_type) {
case MLX5_IB_FLOW_ACTION_MODIFY_HEADER:
mlx5_modify_header_dealloc(maction->flow_action_raw.dev->mdev,
maction->flow_action_raw.modify_hdr);
break;
case MLX5_IB_FLOW_ACTION_PACKET_REFORMAT:
mlx5_packet_reformat_dealloc(maction->flow_action_raw.dev->mdev,
maction->flow_action_raw.pkt_reformat);
break;
case MLX5_IB_FLOW_ACTION_DECAP:
break;
default:
break;
}
}
static int mlx5_ib_destroy_flow_action(struct ib_flow_action *action)
{
struct mlx5_ib_flow_action *maction = to_mflow_act(action);
switch (action->type) {
case IB_FLOW_ACTION_UNSPECIFIED:
destroy_flow_action_raw(maction);
break;
default:
WARN_ON(true);
break;
}
kfree(maction);
return 0;
}
static int
mlx5_ib_ft_type_to_namespace(enum mlx5_ib_uapi_flow_table_type table_type,
enum mlx5_flow_namespace_type *namespace)
{
switch (table_type) {
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX:
*namespace = MLX5_FLOW_NAMESPACE_BYPASS;
break;
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX:
*namespace = MLX5_FLOW_NAMESPACE_EGRESS;
break;
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_FDB:
*namespace = MLX5_FLOW_NAMESPACE_FDB_BYPASS;
break;
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_RX:
*namespace = MLX5_FLOW_NAMESPACE_RDMA_RX;
break;
case MLX5_IB_UAPI_FLOW_TABLE_TYPE_RDMA_TX:
*namespace = MLX5_FLOW_NAMESPACE_RDMA_TX;
break;
default:
return -EINVAL;
}
return 0;
}
static const struct uverbs_attr_spec mlx5_ib_flow_type[] = {
[MLX5_IB_FLOW_TYPE_NORMAL] = {
.type = UVERBS_ATTR_TYPE_PTR_IN,
.u.ptr = {
.len = sizeof(u16), /* data is priority */
.min_len = sizeof(u16),
}
},
[MLX5_IB_FLOW_TYPE_SNIFFER] = {
.type = UVERBS_ATTR_TYPE_PTR_IN,
UVERBS_ATTR_NO_DATA(),
},
[MLX5_IB_FLOW_TYPE_ALL_DEFAULT] = {
.type = UVERBS_ATTR_TYPE_PTR_IN,
UVERBS_ATTR_NO_DATA(),
},
[MLX5_IB_FLOW_TYPE_MC_DEFAULT] = {
.type = UVERBS_ATTR_TYPE_PTR_IN,
UVERBS_ATTR_NO_DATA(),
},
};
static bool is_flow_dest(void *obj, int *dest_id, int *dest_type)
{
struct devx_obj *devx_obj = obj;
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
switch (opcode) {
case MLX5_CMD_OP_DESTROY_TIR:
*dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
*dest_id = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox,
obj_id);
return true;
case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
*dest_type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
*dest_id = MLX5_GET(destroy_flow_table_in, devx_obj->dinbox,
table_id);
return true;
default:
return false;
}
}
static int get_dests(struct uverbs_attr_bundle *attrs,
struct mlx5_ib_flow_matcher *fs_matcher, int *dest_id,
int *dest_type, struct ib_qp **qp, u32 *flags)
{
bool dest_devx, dest_qp;
void *devx_obj;
int err;
dest_devx = uverbs_attr_is_valid(attrs,
MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
dest_qp = uverbs_attr_is_valid(attrs,
MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
*flags = 0;
err = uverbs_get_flags32(flags, attrs, MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS |
MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP);
if (err)
return err;
/* Both flags are not allowed */
if (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS &&
*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
return -EINVAL;
if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_BYPASS) {
if (dest_devx && (dest_qp || *flags))
return -EINVAL;
else if (dest_qp && *flags)
return -EINVAL;
}
/* Allow only DEVX object, drop as dest for FDB */
if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
!(dest_devx || (*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)))
return -EINVAL;
/* Allow only DEVX object or QP as dest when inserting to RDMA_RX */
if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
((!dest_devx && !dest_qp) || (dest_devx && dest_qp)))
return -EINVAL;
*qp = NULL;
if (dest_devx) {
devx_obj =
uverbs_attr_get_obj(attrs,
MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
/* Verify that the given DEVX object is a flow
* steering destination.
*/
if (!is_flow_dest(devx_obj, dest_id, dest_type))
return -EINVAL;
/* Allow only flow table as dest when inserting to FDB or RDMA_RX */
if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS ||
fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_RX) &&
*dest_type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
return -EINVAL;
} else if (dest_qp) {
struct mlx5_ib_qp *mqp;
*qp = uverbs_attr_get_obj(attrs,
MLX5_IB_ATTR_CREATE_FLOW_DEST_QP);
if (IS_ERR(*qp))
return PTR_ERR(*qp);
if ((*qp)->qp_type != IB_QPT_RAW_PACKET)
return -EINVAL;
mqp = to_mqp(*qp);
if (mqp->is_rss)
*dest_id = mqp->rss_qp.tirn;
else
*dest_id = mqp->raw_packet_qp.rq.tirn;
*dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
} else if ((fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) &&
!(*flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)) {
*dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
}
if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
(fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
return -EINVAL;
return 0;
}
static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
{
struct devx_obj *devx_obj = obj;
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
if (opcode == MLX5_CMD_OP_DEALLOC_FLOW_COUNTER) {
if (offset && offset >= devx_obj->flow_counter_bulk_size)
return false;
*counter_id = MLX5_GET(dealloc_flow_counter_in,
devx_obj->dinbox,
flow_counter_id);
*counter_id += offset;
return true;
}
return false;
}
#define MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS 2
static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
struct uverbs_attr_bundle *attrs)
{
struct mlx5_flow_context flow_context = {.flow_tag =
MLX5_FS_DEFAULT_FLOW_TAG};
u32 *offset_attr, offset = 0, counter_id = 0;
int dest_id, dest_type = -1, inlen, len, ret, i;
struct mlx5_ib_flow_handler *flow_handler;
struct mlx5_ib_flow_matcher *fs_matcher;
struct ib_uobject **arr_flow_actions;
struct ib_uflow_resources *uflow_res;
struct mlx5_flow_act flow_act = {};
struct ib_qp *qp = NULL;
void *devx_obj, *cmd_in;
struct ib_uobject *uobj;
struct mlx5_ib_dev *dev;
u32 flags;
if (!capable(CAP_NET_RAW))
return -EPERM;
fs_matcher = uverbs_attr_get_obj(attrs,
MLX5_IB_ATTR_CREATE_FLOW_MATCHER);
uobj = uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
dev = mlx5_udata_to_mdev(&attrs->driver_udata);
if (get_dests(attrs, fs_matcher, &dest_id, &dest_type, &qp, &flags))
return -EINVAL;
if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DEFAULT_MISS)
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS;
if (flags & MLX5_IB_ATTR_CREATE_FLOW_FLAGS_DROP)
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
len = uverbs_attr_get_uobjs_arr(attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
if (len) {
devx_obj = arr_flow_actions[0]->object;
if (uverbs_attr_is_valid(attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET)) {
int num_offsets = uverbs_attr_ptr_get_array_size(
attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
sizeof(u32));
if (num_offsets != 1)
return -EINVAL;
offset_attr = uverbs_attr_get_alloced_ptr(
attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET);
offset = *offset_attr;
}
if (!is_flow_counter(devx_obj, offset, &counter_id))
return -EINVAL;
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
}
cmd_in = uverbs_attr_get_alloced_ptr(
attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
inlen = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
if (!uflow_res)
return -ENOMEM;
len = uverbs_attr_get_uobjs_arr(attrs,
MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
for (i = 0; i < len; i++) {
struct mlx5_ib_flow_action *maction =
to_mflow_act(arr_flow_actions[i]->object);
ret = parse_flow_flow_action(maction, false, &flow_act);
if (ret)
goto err_out;
flow_resources_add(uflow_res, IB_FLOW_SPEC_ACTION_HANDLE,
arr_flow_actions[i]->object);
}
ret = uverbs_copy_from(&flow_context.flow_tag, attrs,
MLX5_IB_ATTR_CREATE_FLOW_TAG);
if (!ret) {
if (flow_context.flow_tag >= BIT(24)) {
ret = -EINVAL;
goto err_out;
}
flow_context.flags |= FLOW_CONTEXT_HAS_TAG;
}
flow_handler =
raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
counter_id, cmd_in, inlen, dest_id, dest_type);
if (IS_ERR(flow_handler)) {
ret = PTR_ERR(flow_handler);
goto err_out;
}
ib_set_flow(uobj, &flow_handler->ibflow, qp, &dev->ib_dev, uflow_res);
return 0;
err_out:
ib_uverbs_flow_resources_free(uflow_res);
return ret;
}
static int flow_matcher_cleanup(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_flow_matcher *obj = uobject->object;
if (atomic_read(&obj->usecnt))
return -EBUSY;
kfree(obj);
return 0;
}
static int steering_anchor_create_ft(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
enum mlx5_flow_namespace_type ns_type)
{
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_flow_namespace *ns;
struct mlx5_flow_table *ft;
if (ft_prio->anchor.ft)
return 0;
ns = mlx5_get_flow_namespace(dev->mdev, ns_type);
if (!ns)
return -EOPNOTSUPP;
ft_attr.flags = MLX5_FLOW_TABLE_UNMANAGED;
ft_attr.uid = MLX5_SHARED_RESOURCE_UID;
ft_attr.prio = 0;
ft_attr.max_fte = 2;
ft_attr.level = 1;
ft = mlx5_create_flow_table(ns, &ft_attr);
if (IS_ERR(ft))
return PTR_ERR(ft);
ft_prio->anchor.ft = ft;
return 0;
}
static void steering_anchor_destroy_ft(struct mlx5_ib_flow_prio *ft_prio)
{
if (ft_prio->anchor.ft) {
mlx5_destroy_flow_table(ft_prio->anchor.ft);
ft_prio->anchor.ft = NULL;
}
}
static int
steering_anchor_create_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_group *fg;
void *flow_group_in;
int err = 0;
if (ft_prio->anchor.fg_drop)
return 0;
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in)
return -ENOMEM;
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1);
fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
if (IS_ERR(fg)) {
err = PTR_ERR(fg);
goto out;
}
ft_prio->anchor.fg_drop = fg;
out:
kvfree(flow_group_in);
return err;
}
static void
steering_anchor_destroy_fg_drop(struct mlx5_ib_flow_prio *ft_prio)
{
if (ft_prio->anchor.fg_drop) {
mlx5_destroy_flow_group(ft_prio->anchor.fg_drop);
ft_prio->anchor.fg_drop = NULL;
}
}
static int
steering_anchor_create_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_group *fg;
void *flow_group_in;
int err = 0;
if (ft_prio->anchor.fg_goto_table)
return 0;
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in)
return -ENOMEM;
fg = mlx5_create_flow_group(ft_prio->anchor.ft, flow_group_in);
if (IS_ERR(fg)) {
err = PTR_ERR(fg);
goto out;
}
ft_prio->anchor.fg_goto_table = fg;
out:
kvfree(flow_group_in);
return err;
}
static void
steering_anchor_destroy_fg_goto_table(struct mlx5_ib_flow_prio *ft_prio)
{
if (ft_prio->anchor.fg_goto_table) {
mlx5_destroy_flow_group(ft_prio->anchor.fg_goto_table);
ft_prio->anchor.fg_goto_table = NULL;
}
}
static int
steering_anchor_create_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
{
struct mlx5_flow_act flow_act = {};
struct mlx5_flow_handle *handle;
if (ft_prio->anchor.rule_drop)
return 0;
flow_act.fg = ft_prio->anchor.fg_drop;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
NULL, 0);
if (IS_ERR(handle))
return PTR_ERR(handle);
ft_prio->anchor.rule_drop = handle;
return 0;
}
static void steering_anchor_destroy_rule_drop(struct mlx5_ib_flow_prio *ft_prio)
{
if (ft_prio->anchor.rule_drop) {
mlx5_del_flow_rules(ft_prio->anchor.rule_drop);
ft_prio->anchor.rule_drop = NULL;
}
}
static int
steering_anchor_create_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
{
struct mlx5_flow_destination dest = {};
struct mlx5_flow_act flow_act = {};
struct mlx5_flow_handle *handle;
if (ft_prio->anchor.rule_goto_table)
return 0;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
flow_act.fg = ft_prio->anchor.fg_goto_table;
dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest.ft = ft_prio->flow_table;
handle = mlx5_add_flow_rules(ft_prio->anchor.ft, NULL, &flow_act,
&dest, 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
ft_prio->anchor.rule_goto_table = handle;
return 0;
}
static void
steering_anchor_destroy_rule_goto_table(struct mlx5_ib_flow_prio *ft_prio)
{
if (ft_prio->anchor.rule_goto_table) {
mlx5_del_flow_rules(ft_prio->anchor.rule_goto_table);
ft_prio->anchor.rule_goto_table = NULL;
}
}
static int steering_anchor_create_res(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_prio *ft_prio,
enum mlx5_flow_namespace_type ns_type)
{
int err;
err = steering_anchor_create_ft(dev, ft_prio, ns_type);
if (err)
return err;
err = steering_anchor_create_fg_drop(ft_prio);
if (err)
goto destroy_ft;
err = steering_anchor_create_fg_goto_table(ft_prio);
if (err)
goto destroy_fg_drop;
err = steering_anchor_create_rule_drop(ft_prio);
if (err)
goto destroy_fg_goto_table;
err = steering_anchor_create_rule_goto_table(ft_prio);
if (err)
goto destroy_rule_drop;
return 0;
destroy_rule_drop:
steering_anchor_destroy_rule_drop(ft_prio);
destroy_fg_goto_table:
steering_anchor_destroy_fg_goto_table(ft_prio);
destroy_fg_drop:
steering_anchor_destroy_fg_drop(ft_prio);
destroy_ft:
steering_anchor_destroy_ft(ft_prio);
return err;
}
static void mlx5_steering_anchor_destroy_res(struct mlx5_ib_flow_prio *ft_prio)
{
steering_anchor_destroy_rule_goto_table(ft_prio);
steering_anchor_destroy_rule_drop(ft_prio);
steering_anchor_destroy_fg_goto_table(ft_prio);
steering_anchor_destroy_fg_drop(ft_prio);
steering_anchor_destroy_ft(ft_prio);
}
static int steering_anchor_cleanup(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_steering_anchor *obj = uobject->object;
if (atomic_read(&obj->usecnt))
return -EBUSY;
mutex_lock(&obj->dev->flow_db->lock);
if (!--obj->ft_prio->anchor.rule_goto_table_ref)
steering_anchor_destroy_rule_goto_table(obj->ft_prio);
put_flow_table(obj->dev, obj->ft_prio, true);
mutex_unlock(&obj->dev->flow_db->lock);
kfree(obj);
return 0;
}
static void fs_cleanup_anchor(struct mlx5_ib_flow_prio *prio,
int count)
{
while (count--)
mlx5_steering_anchor_destroy_res(&prio[count]);
}
void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev)
{
fs_cleanup_anchor(dev->flow_db->prios, MLX5_IB_NUM_FLOW_FT);
fs_cleanup_anchor(dev->flow_db->egress_prios, MLX5_IB_NUM_FLOW_FT);
fs_cleanup_anchor(dev->flow_db->sniffer, MLX5_IB_NUM_SNIFFER_FTS);
fs_cleanup_anchor(dev->flow_db->egress, MLX5_IB_NUM_EGRESS_FTS);
fs_cleanup_anchor(dev->flow_db->fdb, MLX5_IB_NUM_FDB_FTS);
fs_cleanup_anchor(dev->flow_db->rdma_rx, MLX5_IB_NUM_FLOW_FT);
fs_cleanup_anchor(dev->flow_db->rdma_tx, MLX5_IB_NUM_FLOW_FT);
}
static int mlx5_ib_matcher_ns(struct uverbs_attr_bundle *attrs,
struct mlx5_ib_flow_matcher *obj)
{
enum mlx5_ib_uapi_flow_table_type ft_type =
MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX;
u32 flags;
int err;
/* New users should use MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE and older
* users should switch to it. We leave this to not break userspace
*/
if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE) &&
uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS))
return -EINVAL;
if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE)) {
err = uverbs_get_const(&ft_type, attrs,
MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE);
if (err)
return err;
err = mlx5_ib_ft_type_to_namespace(ft_type, &obj->ns_type);
if (err)
return err;
return 0;
}
if (uverbs_attr_is_valid(attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS)) {
err = uverbs_get_flags32(&flags, attrs,
MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
IB_FLOW_ATTR_FLAGS_EGRESS);
if (err)
return err;
if (flags)
return mlx5_ib_ft_type_to_namespace(
MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX,
&obj->ns_type);
}
obj->ns_type = MLX5_FLOW_NAMESPACE_BYPASS;
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
struct mlx5_ib_flow_matcher *obj;
int err;
obj = kzalloc(sizeof(struct mlx5_ib_flow_matcher), GFP_KERNEL);
if (!obj)
return -ENOMEM;
obj->mask_len = uverbs_attr_get_len(
attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
err = uverbs_copy_from(&obj->matcher_mask,
attrs,
MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
if (err)
goto end;
obj->flow_type = uverbs_attr_get_enum_id(
attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
err = uverbs_copy_from(&obj->priority,
attrs,
MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
if (err)
goto end;
}
err = uverbs_copy_from(&obj->match_criteria_enable,
attrs,
MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA);
if (err)
goto end;
err = mlx5_ib_matcher_ns(attrs, obj);
if (err)
goto end;
if (obj->ns_type == MLX5_FLOW_NAMESPACE_FDB_BYPASS &&
mlx5_eswitch_mode(dev->mdev) != MLX5_ESWITCH_OFFLOADS) {
err = -EINVAL;
goto end;
}
uobj->object = obj;
obj->mdev = dev->mdev;
atomic_set(&obj->usecnt, 0);
return 0;
end:
kfree(obj);
return err;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE);
struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
enum mlx5_ib_uapi_flow_table_type ib_uapi_ft_type;
enum mlx5_flow_namespace_type ns_type;
struct mlx5_ib_steering_anchor *obj;
struct mlx5_ib_flow_prio *ft_prio;
u16 priority;
u32 ft_id;
int err;
if (!capable(CAP_NET_RAW))
return -EPERM;
err = uverbs_get_const(&ib_uapi_ft_type, attrs,
MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE);
if (err)
return err;
err = mlx5_ib_ft_type_to_namespace(ib_uapi_ft_type, &ns_type);
if (err)
return err;
err = uverbs_copy_from(&priority, attrs,
MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY);
if (err)
return err;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
return -ENOMEM;
mutex_lock(&dev->flow_db->lock);
ft_prio = _get_flow_table(dev, priority, ns_type, 0);
if (IS_ERR(ft_prio)) {
err = PTR_ERR(ft_prio);
goto free_obj;
}
ft_prio->refcount++;
if (!ft_prio->anchor.rule_goto_table_ref) {
err = steering_anchor_create_res(dev, ft_prio, ns_type);
if (err)
goto put_flow_table;
}
ft_prio->anchor.rule_goto_table_ref++;
ft_id = mlx5_flow_table_id(ft_prio->anchor.ft);
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
&ft_id, sizeof(ft_id));
if (err)
goto destroy_res;
mutex_unlock(&dev->flow_db->lock);
uobj->object = obj;
obj->dev = dev;
obj->ft_prio = ft_prio;
atomic_set(&obj->usecnt, 0);
return 0;
destroy_res:
--ft_prio->anchor.rule_goto_table_ref;
mlx5_steering_anchor_destroy_res(ft_prio);
put_flow_table:
put_flow_table(dev, ft_prio, true);
mutex_unlock(&dev->flow_db->lock);
free_obj:
kfree(obj);
return err;
}
static struct ib_flow_action *
mlx5_ib_create_modify_header(struct mlx5_ib_dev *dev,
enum mlx5_ib_uapi_flow_table_type ft_type,
u8 num_actions, void *in)
{
enum mlx5_flow_namespace_type namespace;
struct mlx5_ib_flow_action *maction;
int ret;
ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
if (ret)
return ERR_PTR(-EINVAL);
maction = kzalloc(sizeof(*maction), GFP_KERNEL);
if (!maction)
return ERR_PTR(-ENOMEM);
maction->flow_action_raw.modify_hdr =
mlx5_modify_header_alloc(dev->mdev, namespace, num_actions, in);
if (IS_ERR(maction->flow_action_raw.modify_hdr)) {
ret = PTR_ERR(maction->flow_action_raw.modify_hdr);
kfree(maction);
return ERR_PTR(ret);
}
maction->flow_action_raw.sub_type =
MLX5_IB_FLOW_ACTION_MODIFY_HEADER;
maction->flow_action_raw.dev = dev;
return &maction->ib_action;
}
static bool mlx5_ib_modify_header_supported(struct mlx5_ib_dev *dev)
{
return MLX5_CAP_FLOWTABLE_NIC_RX(dev->mdev,
max_modify_header_actions) ||
MLX5_CAP_FLOWTABLE_NIC_TX(dev->mdev,
max_modify_header_actions) ||
MLX5_CAP_FLOWTABLE_RDMA_TX(dev->mdev,
max_modify_header_actions);
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE);
struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
enum mlx5_ib_uapi_flow_table_type ft_type;
struct ib_flow_action *action;
int num_actions;
void *in;
int ret;
if (!mlx5_ib_modify_header_supported(mdev))
return -EOPNOTSUPP;
in = uverbs_attr_get_alloced_ptr(attrs,
MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM);
num_actions = uverbs_attr_ptr_get_array_size(
attrs, MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto));
if (num_actions < 0)
return num_actions;
ret = uverbs_get_const(&ft_type, attrs,
MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE);
if (ret)
return ret;
action = mlx5_ib_create_modify_header(mdev, ft_type, num_actions, in);
if (IS_ERR(action))
return PTR_ERR(action);
uverbs_flow_action_fill_action(action, uobj, &mdev->ib_dev,
IB_FLOW_ACTION_UNSPECIFIED);
return 0;
}
static bool mlx5_ib_flow_action_packet_reformat_valid(struct mlx5_ib_dev *ibdev,
u8 packet_reformat_type,
u8 ft_type)
{
switch (packet_reformat_type) {
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
return MLX5_CAP_FLOWTABLE(ibdev->mdev,
encap_general_header);
break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_TX)
return MLX5_CAP_FLOWTABLE_NIC_TX(ibdev->mdev,
reformat_l2_to_l3_tunnel);
break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev,
reformat_l3_tunnel_to_l2);
break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2:
if (ft_type == MLX5_IB_UAPI_FLOW_TABLE_TYPE_NIC_RX)
return MLX5_CAP_FLOWTABLE_NIC_RX(ibdev->mdev, decap);
break;
default:
break;
}
return false;
}
static int mlx5_ib_dv_to_prm_packet_reforamt_type(u8 dv_prt, u8 *prm_prt)
{
switch (dv_prt) {
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL:
*prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L2_TUNNEL;
break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2:
*prm_prt = MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2;
break;
case MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L3_TUNNEL:
*prm_prt = MLX5_REFORMAT_TYPE_L2_TO_L3_TUNNEL;
break;
default:
return -EINVAL;
}
return 0;
}
static int mlx5_ib_flow_action_create_packet_reformat_ctx(
struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_action *maction,
u8 ft_type, u8 dv_prt,
void *in, size_t len)
{
struct mlx5_pkt_reformat_params reformat_params;
enum mlx5_flow_namespace_type namespace;
u8 prm_prt;
int ret;
ret = mlx5_ib_ft_type_to_namespace(ft_type, &namespace);
if (ret)
return ret;
ret = mlx5_ib_dv_to_prm_packet_reforamt_type(dv_prt, &prm_prt);
if (ret)
return ret;
memset(&reformat_params, 0, sizeof(reformat_params));
reformat_params.type = prm_prt;
reformat_params.size = len;
reformat_params.data = in;
maction->flow_action_raw.pkt_reformat =
mlx5_packet_reformat_alloc(dev->mdev, &reformat_params,
namespace);
if (IS_ERR(maction->flow_action_raw.pkt_reformat)) {
ret = PTR_ERR(maction->flow_action_raw.pkt_reformat);
return ret;
}
maction->flow_action_raw.sub_type =
MLX5_IB_FLOW_ACTION_PACKET_REFORMAT;
maction->flow_action_raw.dev = dev;
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE);
struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
enum mlx5_ib_uapi_flow_action_packet_reformat_type dv_prt;
enum mlx5_ib_uapi_flow_table_type ft_type;
struct mlx5_ib_flow_action *maction;
int ret;
ret = uverbs_get_const(&ft_type, attrs,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE);
if (ret)
return ret;
ret = uverbs_get_const(&dv_prt, attrs,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE);
if (ret)
return ret;
if (!mlx5_ib_flow_action_packet_reformat_valid(mdev, dv_prt, ft_type))
return -EOPNOTSUPP;
maction = kzalloc(sizeof(*maction), GFP_KERNEL);
if (!maction)
return -ENOMEM;
if (dv_prt ==
MLX5_IB_UAPI_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2) {
maction->flow_action_raw.sub_type =
MLX5_IB_FLOW_ACTION_DECAP;
maction->flow_action_raw.dev = mdev;
} else {
void *in;
int len;
in = uverbs_attr_get_alloced_ptr(attrs,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
if (IS_ERR(in)) {
ret = PTR_ERR(in);
goto free_maction;
}
len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF);
ret = mlx5_ib_flow_action_create_packet_reformat_ctx(mdev,
maction, ft_type, dv_prt, in, len);
if (ret)
goto free_maction;
}
uverbs_flow_action_fill_action(&maction->ib_action, uobj, &mdev->ib_dev,
IB_FLOW_ACTION_UNSPECIFIED);
return 0;
free_maction:
kfree(maction);
return ret;
}
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_CREATE_FLOW,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
UVERBS_OBJECT_FLOW,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
MLX5_IB_OBJECT_FLOW_MATCHER,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
UVERBS_OBJECT_QP,
UVERBS_ACCESS_READ),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_READ),
UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS,
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_ACCESS_READ, 1,
MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS,
UA_OPTIONAL),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_TAG,
UVERBS_ATTR_TYPE(u32),
UA_OPTIONAL),
UVERBS_ATTR_IDRS_ARR(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_READ, 1, 1,
UA_OPTIONAL),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX_OFFSET,
UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
UA_OPTIONAL,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_CREATE_FLOW_FLAGS,
enum mlx5_ib_create_flow_flags,
UA_OPTIONAL));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_DESTROY_FLOW,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
UVERBS_OBJECT_FLOW,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
ADD_UVERBS_METHODS(mlx5_ib_fs,
UVERBS_OBJECT_FLOW,
&UVERBS_METHOD(MLX5_IB_METHOD_CREATE_FLOW),
&UVERBS_METHOD(MLX5_IB_METHOD_DESTROY_FLOW));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_HANDLE,
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_ACTIONS_PRM,
UVERBS_ATTR_MIN_SIZE(MLX5_UN_SZ_BYTES(
set_add_copy_action_in_auto)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_MODIFY_HEADER_FT_TYPE,
enum mlx5_ib_uapi_flow_table_type,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_HANDLE,
UVERBS_OBJECT_FLOW_ACTION,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_DATA_BUF,
UVERBS_ATTR_MIN_SIZE(1),
UA_ALLOC_AND_COPY,
UA_OPTIONAL),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_TYPE,
enum mlx5_ib_uapi_flow_action_packet_reformat_type,
UA_MANDATORY),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_CREATE_PACKET_REFORMAT_FT_TYPE,
enum mlx5_ib_uapi_flow_table_type,
UA_MANDATORY));
ADD_UVERBS_METHODS(
mlx5_ib_flow_actions,
UVERBS_OBJECT_FLOW_ACTION,
&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_MODIFY_HEADER),
&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_ACTION_CREATE_PACKET_REFORMAT));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
MLX5_IB_OBJECT_FLOW_MATCHER,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
UA_MANDATORY),
UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
mlx5_ib_flow_type,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
UVERBS_ATTR_TYPE(u8),
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_FLAGS,
enum ib_flow_flags,
UA_OPTIONAL),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_FLOW_MATCHER_FT_TYPE,
enum mlx5_ib_uapi_flow_table_type,
UA_OPTIONAL));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
MLX5_IB_OBJECT_FLOW_MATCHER,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
&UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_STEERING_ANCHOR_CREATE,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_CREATE_HANDLE,
MLX5_IB_OBJECT_STEERING_ANCHOR,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_TYPE,
enum mlx5_ib_uapi_flow_table_type,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_PRIORITY,
UVERBS_ATTR_TYPE(u16),
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_STEERING_ANCHOR_FT_ID,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_STEERING_ANCHOR_DESTROY_HANDLE,
MLX5_IB_OBJECT_STEERING_ANCHOR,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
MLX5_IB_OBJECT_STEERING_ANCHOR,
UVERBS_TYPE_ALLOC_IDR(steering_anchor_cleanup),
&UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE),
&UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY));
const struct uapi_definition mlx5_ib_flow_defs[] = {
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_FLOW_MATCHER),
UAPI_DEF_CHAIN_OBJ_TREE(
UVERBS_OBJECT_FLOW,
&mlx5_ib_fs),
UAPI_DEF_CHAIN_OBJ_TREE(UVERBS_OBJECT_FLOW_ACTION,
&mlx5_ib_flow_actions),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_STEERING_ANCHOR,
UAPI_DEF_IS_OBJ_SUPPORTED(mlx5_ib_shared_ft_allowed)),
{},
};
static const struct ib_device_ops flow_ops = {
.create_flow = mlx5_ib_create_flow,
.destroy_flow = mlx5_ib_destroy_flow,
.destroy_flow_action = mlx5_ib_destroy_flow_action,
};
int mlx5_ib_fs_init(struct mlx5_ib_dev *dev)
{
dev->flow_db = kzalloc(sizeof(*dev->flow_db), GFP_KERNEL);
if (!dev->flow_db)
return -ENOMEM;
mutex_init(&dev->flow_db->lock);
ib_set_device_ops(&dev->ib_dev, &flow_ops);
return 0;
}