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ovs/lib/netdev-offload-dpdk.c
David Marchand c3e410a03a netdev-offload-dpdk: Fix crash in debug log. 
The offload thread calling ufid_to_rte_flow_disassociate() may be the
last one holding a reference on the netdev and physdev.
So displaying information about them might trigger a crash when
removing a physical port.

Fixes: faf71e492263 ("netdev-dpdk: Print port name in offload API messages.")
Acked-by: Mike Pattrick <mkp@redhat.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
2023-05-29 19:22:18 +02:00

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/*
* Copyright (c) 2014, 2015, 2016, 2017 Nicira, Inc.
* Copyright (c) 2019 Mellanox Technologies, Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <rte_ethdev.h>
#include <rte_flow.h>
#include <rte_gre.h>
#include "cmap.h"
#include "dpif-netdev.h"
#include "netdev-offload-provider.h"
#include "netdev-provider.h"
#include "netdev-vport.h"
#include "odp-util.h"
#include "openvswitch/match.h"
#include "openvswitch/vlog.h"
#include "ovs-rcu.h"
#include "packets.h"
#include "uuid.h"
VLOG_DEFINE_THIS_MODULE(netdev_offload_dpdk);
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(600, 600);
/* Thread-safety
* =============
*
* Below API is NOT thread safe in following terms:
*
* - The caller must be sure that 'netdev' will not be destructed/deallocated.
*
* - The caller must be sure that 'netdev' configuration will not be changed.
* For example, simultaneous call of 'netdev_reconfigure()' for the same
* 'netdev' is forbidden.
*
* For current implementation all above restrictions are fulfilled by
* read-locking the datapath 'port_rwlock' in lib/dpif-netdev.c. */
/*
* A mapping from ufid to dpdk rte_flow.
*/
struct ufid_to_rte_flow_data {
struct cmap_node node;
ovs_u128 ufid;
struct netdev *netdev;
struct rte_flow *rte_flow;
bool actions_offloaded;
struct dpif_flow_stats stats;
struct netdev *physdev;
struct ovs_mutex lock;
unsigned int creation_tid;
bool dead;
};
struct netdev_offload_dpdk_data {
struct cmap ufid_to_rte_flow;
uint64_t *rte_flow_counters;
struct ovs_mutex map_lock;
};
static int
offload_data_init(struct netdev *netdev)
{
struct netdev_offload_dpdk_data *data;
data = xzalloc(sizeof *data);
ovs_mutex_init(&data->map_lock);
cmap_init(&data->ufid_to_rte_flow);
data->rte_flow_counters = xcalloc(netdev_offload_thread_nb(),
sizeof *data->rte_flow_counters);
ovsrcu_set(&netdev->hw_info.offload_data, (void *) data);
return 0;
}
static void
offload_data_destroy__(struct netdev_offload_dpdk_data *data)
{
ovs_mutex_destroy(&data->map_lock);
free(data->rte_flow_counters);
free(data);
}
static void
offload_data_destroy(struct netdev *netdev)
{
struct netdev_offload_dpdk_data *data;
struct ufid_to_rte_flow_data *node;
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
if (data == NULL) {
return;
}
if (!cmap_is_empty(&data->ufid_to_rte_flow)) {
VLOG_ERR("Incomplete flush: %s contains rte_flow elements",
netdev_get_name(netdev));
}
CMAP_FOR_EACH (node, node, &data->ufid_to_rte_flow) {
ovsrcu_postpone(free, node);
}
cmap_destroy(&data->ufid_to_rte_flow);
ovsrcu_postpone(offload_data_destroy__, data);
ovsrcu_set(&netdev->hw_info.offload_data, NULL);
}
static void
offload_data_lock(struct netdev *netdev)
OVS_NO_THREAD_SAFETY_ANALYSIS
{
struct netdev_offload_dpdk_data *data;
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
if (!data) {
return;
}
ovs_mutex_lock(&data->map_lock);
}
static void
offload_data_unlock(struct netdev *netdev)
OVS_NO_THREAD_SAFETY_ANALYSIS
{
struct netdev_offload_dpdk_data *data;
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
if (!data) {
return;
}
ovs_mutex_unlock(&data->map_lock);
}
static struct cmap *
offload_data_map(struct netdev *netdev)
{
struct netdev_offload_dpdk_data *data;
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
return data ? &data->ufid_to_rte_flow : NULL;
}
/* Find rte_flow with @ufid. */
static struct ufid_to_rte_flow_data *
ufid_to_rte_flow_data_find(struct netdev *netdev,
const ovs_u128 *ufid, bool warn)
{
size_t hash = hash_bytes(ufid, sizeof *ufid, 0);
struct ufid_to_rte_flow_data *data;
struct cmap *map = offload_data_map(netdev);
if (!map) {
return NULL;
}
CMAP_FOR_EACH_WITH_HASH (data, node, hash, map) {
if (ovs_u128_equals(*ufid, data->ufid)) {
return data;
}
}
if (warn) {
VLOG_WARN("ufid "UUID_FMT" is not associated with an rte flow",
UUID_ARGS((struct uuid *) ufid));
}
return NULL;
}
/* Find rte_flow with @ufid, lock-protected. */
static struct ufid_to_rte_flow_data *
ufid_to_rte_flow_data_find_protected(struct netdev *netdev,
const ovs_u128 *ufid)
{
size_t hash = hash_bytes(ufid, sizeof *ufid, 0);
struct ufid_to_rte_flow_data *data;
struct cmap *map = offload_data_map(netdev);
CMAP_FOR_EACH_WITH_HASH_PROTECTED (data, node, hash, map) {
if (ovs_u128_equals(*ufid, data->ufid)) {
return data;
}
}
return NULL;
}
static inline struct ufid_to_rte_flow_data *
ufid_to_rte_flow_associate(const ovs_u128 *ufid, struct netdev *netdev,
struct netdev *physdev, struct rte_flow *rte_flow,
bool actions_offloaded)
{
size_t hash = hash_bytes(ufid, sizeof *ufid, 0);
struct cmap *map = offload_data_map(netdev);
struct ufid_to_rte_flow_data *data_prev;
struct ufid_to_rte_flow_data *data;
if (!map) {
return NULL;
}
data = xzalloc(sizeof *data);
offload_data_lock(netdev);
/*
* We should not simply overwrite an existing rte flow.
* We should have deleted it first before re-adding it.
* Thus, if following assert triggers, something is wrong:
* the rte_flow is not destroyed.
*/
data_prev = ufid_to_rte_flow_data_find_protected(netdev, ufid);
if (data_prev) {
ovs_assert(data_prev->rte_flow == NULL);
}
data->ufid = *ufid;
data->netdev = netdev_ref(netdev);
data->physdev = netdev != physdev ? netdev_ref(physdev) : physdev;
data->rte_flow = rte_flow;
data->actions_offloaded = actions_offloaded;
data->creation_tid = netdev_offload_thread_id();
ovs_mutex_init(&data->lock);
cmap_insert(map, CONST_CAST(struct cmap_node *, &data->node), hash);
offload_data_unlock(netdev);
return data;
}
static void
rte_flow_data_unref(struct ufid_to_rte_flow_data *data)
{
ovs_mutex_destroy(&data->lock);
free(data);
}
static inline void
ufid_to_rte_flow_disassociate(struct ufid_to_rte_flow_data *data)
OVS_REQUIRES(data->lock)
{
size_t hash = hash_bytes(&data->ufid, sizeof data->ufid, 0);
struct cmap *map = offload_data_map(data->netdev);
if (!map) {
return;
}
offload_data_lock(data->netdev);
cmap_remove(map, CONST_CAST(struct cmap_node *, &data->node), hash);
offload_data_unlock(data->netdev);
if (data->netdev != data->physdev) {
netdev_close(data->netdev);
}
netdev_close(data->physdev);
ovsrcu_postpone(rte_flow_data_unref, data);
}
/*
* To avoid individual xrealloc calls for each new element, a 'curent_max'
* is used to keep track of current allocated number of elements. Starts
* by 8 and doubles on each xrealloc call.
*/
struct flow_patterns {
struct rte_flow_item *items;
int cnt;
int current_max;
struct netdev *physdev;
/* tnl_pmd_items is the opaque array of items returned by the PMD. */
struct rte_flow_item *tnl_pmd_items;
uint32_t tnl_pmd_items_cnt;
struct ds s_tnl;
};
struct flow_actions {
struct rte_flow_action *actions;
int cnt;
int current_max;
struct netdev *tnl_netdev;
/* tnl_pmd_actions is the opaque array of actions returned by the PMD. */
struct rte_flow_action *tnl_pmd_actions;
uint32_t tnl_pmd_actions_cnt;
/* tnl_pmd_actions_pos is where the tunnel actions starts within the
* 'actions' field.
*/
int tnl_pmd_actions_pos;
struct ds s_tnl;
};
static void
dump_flow_attr(struct ds *s, struct ds *s_extra,
const struct rte_flow_attr *attr,
struct flow_patterns *flow_patterns,
struct flow_actions *flow_actions)
{
if (flow_actions->tnl_pmd_actions_cnt) {
ds_clone(s_extra, &flow_actions->s_tnl);
} else if (flow_patterns->tnl_pmd_items_cnt) {
ds_clone(s_extra, &flow_patterns->s_tnl);
}
ds_put_format(s, "%s%spriority %"PRIu32" group %"PRIu32" %s%s%s",
attr->ingress ? "ingress " : "",
attr->egress ? "egress " : "", attr->priority, attr->group,
attr->transfer ? "transfer " : "",
flow_actions->tnl_pmd_actions_cnt ? "tunnel_set 1 " : "",
flow_patterns->tnl_pmd_items_cnt ? "tunnel_match 1 " : "");
}
/* Adds one pattern item 'field' with the 'mask' to dynamic string 's' using
* 'testpmd command'-like format. */
#define DUMP_PATTERN_ITEM(mask, has_last, field, fmt, spec_pri, mask_pri, \
last_pri) \
if (has_last) { \
ds_put_format(s, field " spec " fmt " " field " mask " fmt " " field \
" last " fmt " ", spec_pri, mask_pri, last_pri); \
} else if (is_all_ones(&mask, sizeof mask)) { \
ds_put_format(s, field " is " fmt " ", spec_pri); \
} else if (!is_all_zeros(&mask, sizeof mask)) { \
ds_put_format(s, field " spec " fmt " " field " mask " fmt " ", \
spec_pri, mask_pri); \
}
static void
dump_flow_pattern(struct ds *s,
struct flow_patterns *flow_patterns,
int pattern_index)
{
const struct rte_flow_item *item = &flow_patterns->items[pattern_index];
if (item->type == RTE_FLOW_ITEM_TYPE_END) {
ds_put_cstr(s, "end ");
} else if (flow_patterns->tnl_pmd_items_cnt &&
pattern_index < flow_patterns->tnl_pmd_items_cnt) {
return;
} else if (item->type == RTE_FLOW_ITEM_TYPE_ETH) {
const struct rte_flow_item_eth *eth_spec = item->spec;
const struct rte_flow_item_eth *eth_mask = item->mask;
uint8_t ea[ETH_ADDR_LEN];
ds_put_cstr(s, "eth ");
if (eth_spec) {
uint32_t has_vlan_mask;
if (!eth_mask) {
eth_mask = &rte_flow_item_eth_mask;
}
DUMP_PATTERN_ITEM(eth_mask->src, false, "src", ETH_ADDR_FMT,
ETH_ADDR_BYTES_ARGS(eth_spec->src.addr_bytes),
ETH_ADDR_BYTES_ARGS(eth_mask->src.addr_bytes),
ETH_ADDR_BYTES_ARGS(ea));
DUMP_PATTERN_ITEM(eth_mask->dst, false, "dst", ETH_ADDR_FMT,
ETH_ADDR_BYTES_ARGS(eth_spec->dst.addr_bytes),
ETH_ADDR_BYTES_ARGS(eth_mask->dst.addr_bytes),
ETH_ADDR_BYTES_ARGS(ea));
DUMP_PATTERN_ITEM(eth_mask->type, false, "type", "0x%04"PRIx16,
ntohs(eth_spec->type),
ntohs(eth_mask->type), 0);
has_vlan_mask = eth_mask->has_vlan ? UINT32_MAX : 0;
DUMP_PATTERN_ITEM(has_vlan_mask, false, "has_vlan", "%d",
eth_spec->has_vlan, eth_mask->has_vlan, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
const struct rte_flow_item_vlan *vlan_spec = item->spec;
const struct rte_flow_item_vlan *vlan_mask = item->mask;
ds_put_cstr(s, "vlan ");
if (vlan_spec) {
if (!vlan_mask) {
vlan_mask = &rte_flow_item_vlan_mask;
}
DUMP_PATTERN_ITEM(vlan_mask->inner_type, false, "inner_type",
"0x%"PRIx16, ntohs(vlan_spec->inner_type),
ntohs(vlan_mask->inner_type), 0);
DUMP_PATTERN_ITEM(vlan_mask->tci, false, "tci", "0x%"PRIx16,
ntohs(vlan_spec->tci), ntohs(vlan_mask->tci), 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_IPV4) {
const struct rte_flow_item_ipv4 *ipv4_spec = item->spec;
const struct rte_flow_item_ipv4 *ipv4_mask = item->mask;
const struct rte_flow_item_ipv4 *ipv4_last = item->last;
ds_put_cstr(s, "ipv4 ");
if (ipv4_spec) {
ovs_be16 fragment_offset_mask;
if (!ipv4_mask) {
ipv4_mask = &rte_flow_item_ipv4_mask;
}
if (!ipv4_last) {
ipv4_last = &rte_flow_item_ipv4_mask;
}
DUMP_PATTERN_ITEM(ipv4_mask->hdr.src_addr, false, "src", IP_FMT,
IP_ARGS(ipv4_spec->hdr.src_addr),
IP_ARGS(ipv4_mask->hdr.src_addr), IP_ARGS(0));
DUMP_PATTERN_ITEM(ipv4_mask->hdr.dst_addr, false, "dst", IP_FMT,
IP_ARGS(ipv4_spec->hdr.dst_addr),
IP_ARGS(ipv4_mask->hdr.dst_addr), IP_ARGS(0));
DUMP_PATTERN_ITEM(ipv4_mask->hdr.next_proto_id, false, "proto",
"0x%"PRIx8, ipv4_spec->hdr.next_proto_id,
ipv4_mask->hdr.next_proto_id, 0);
DUMP_PATTERN_ITEM(ipv4_mask->hdr.type_of_service, false, "tos",
"0x%"PRIx8, ipv4_spec->hdr.type_of_service,
ipv4_mask->hdr.type_of_service, 0);
DUMP_PATTERN_ITEM(ipv4_mask->hdr.time_to_live, false, "ttl",
"0x%"PRIx8, ipv4_spec->hdr.time_to_live,
ipv4_mask->hdr.time_to_live, 0);
fragment_offset_mask = ipv4_mask->hdr.fragment_offset ==
htons(RTE_IPV4_HDR_OFFSET_MASK |
RTE_IPV4_HDR_MF_FLAG)
? OVS_BE16_MAX
: ipv4_mask->hdr.fragment_offset;
DUMP_PATTERN_ITEM(fragment_offset_mask, item->last,
"fragment_offset", "0x%"PRIx16,
ntohs(ipv4_spec->hdr.fragment_offset),
ntohs(ipv4_mask->hdr.fragment_offset),
ntohs(ipv4_last->hdr.fragment_offset));
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_UDP) {
const struct rte_flow_item_udp *udp_spec = item->spec;
const struct rte_flow_item_udp *udp_mask = item->mask;
ds_put_cstr(s, "udp ");
if (udp_spec) {
if (!udp_mask) {
udp_mask = &rte_flow_item_udp_mask;
}
DUMP_PATTERN_ITEM(udp_mask->hdr.src_port, false, "src", "%"PRIu16,
ntohs(udp_spec->hdr.src_port),
ntohs(udp_mask->hdr.src_port), 0);
DUMP_PATTERN_ITEM(udp_mask->hdr.dst_port, false, "dst", "%"PRIu16,
ntohs(udp_spec->hdr.dst_port),
ntohs(udp_mask->hdr.dst_port), 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_SCTP) {
const struct rte_flow_item_sctp *sctp_spec = item->spec;
const struct rte_flow_item_sctp *sctp_mask = item->mask;
ds_put_cstr(s, "sctp ");
if (sctp_spec) {
if (!sctp_mask) {
sctp_mask = &rte_flow_item_sctp_mask;
}
DUMP_PATTERN_ITEM(sctp_mask->hdr.src_port, false, "src", "%"PRIu16,
ntohs(sctp_spec->hdr.src_port),
ntohs(sctp_mask->hdr.src_port), 0);
DUMP_PATTERN_ITEM(sctp_mask->hdr.dst_port, false, "dst", "%"PRIu16,
ntohs(sctp_spec->hdr.dst_port),
ntohs(sctp_mask->hdr.dst_port), 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_ICMP) {
const struct rte_flow_item_icmp *icmp_spec = item->spec;
const struct rte_flow_item_icmp *icmp_mask = item->mask;
ds_put_cstr(s, "icmp ");
if (icmp_spec) {
if (!icmp_mask) {
icmp_mask = &rte_flow_item_icmp_mask;
}
DUMP_PATTERN_ITEM(icmp_mask->hdr.icmp_type, false, "icmp_type",
"%"PRIu8, icmp_spec->hdr.icmp_type,
icmp_mask->hdr.icmp_type, 0);
DUMP_PATTERN_ITEM(icmp_mask->hdr.icmp_code, false, "icmp_code",
"%"PRIu8, icmp_spec->hdr.icmp_code,
icmp_mask->hdr.icmp_code, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_TCP) {
const struct rte_flow_item_tcp *tcp_spec = item->spec;
const struct rte_flow_item_tcp *tcp_mask = item->mask;
ds_put_cstr(s, "tcp ");
if (tcp_spec) {
if (!tcp_mask) {
tcp_mask = &rte_flow_item_tcp_mask;
}
DUMP_PATTERN_ITEM(tcp_mask->hdr.src_port, false, "src", "%"PRIu16,
ntohs(tcp_spec->hdr.src_port),
ntohs(tcp_mask->hdr.src_port), 0);
DUMP_PATTERN_ITEM(tcp_mask->hdr.dst_port, false, "dst", "%"PRIu16,
ntohs(tcp_spec->hdr.dst_port),
ntohs(tcp_mask->hdr.dst_port), 0);
DUMP_PATTERN_ITEM(tcp_mask->hdr.tcp_flags, false, "flags",
"0x%"PRIx8, tcp_spec->hdr.tcp_flags,
tcp_mask->hdr.tcp_flags, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_IPV6) {
const struct rte_flow_item_ipv6 *ipv6_spec = item->spec;
const struct rte_flow_item_ipv6 *ipv6_mask = item->mask;
char addr_str[INET6_ADDRSTRLEN];
char mask_str[INET6_ADDRSTRLEN];
struct in6_addr addr, mask;
ds_put_cstr(s, "ipv6 ");
if (ipv6_spec) {
uint8_t has_frag_ext_mask;
if (!ipv6_mask) {
ipv6_mask = &rte_flow_item_ipv6_mask;
}
memcpy(&addr, ipv6_spec->hdr.src_addr, sizeof addr);
memcpy(&mask, ipv6_mask->hdr.src_addr, sizeof mask);
ipv6_string_mapped(addr_str, &addr);
ipv6_string_mapped(mask_str, &mask);
DUMP_PATTERN_ITEM(mask, false, "src", "%s",
addr_str, mask_str, "");
memcpy(&addr, ipv6_spec->hdr.dst_addr, sizeof addr);
memcpy(&mask, ipv6_mask->hdr.dst_addr, sizeof mask);
ipv6_string_mapped(addr_str, &addr);
ipv6_string_mapped(mask_str, &mask);
DUMP_PATTERN_ITEM(mask, false, "dst", "%s",
addr_str, mask_str, "");
DUMP_PATTERN_ITEM(ipv6_mask->hdr.proto, false, "proto", "%"PRIu8,
ipv6_spec->hdr.proto, ipv6_mask->hdr.proto, 0);
DUMP_PATTERN_ITEM(ipv6_mask->hdr.vtc_flow, false,
"tc", "0x%"PRIx32,
ntohl(ipv6_spec->hdr.vtc_flow),
ntohl(ipv6_mask->hdr.vtc_flow), 0);
DUMP_PATTERN_ITEM(ipv6_mask->hdr.hop_limits, false,
"hop", "%"PRIu8,
ipv6_spec->hdr.hop_limits,
ipv6_mask->hdr.hop_limits, 0);
has_frag_ext_mask = ipv6_mask->has_frag_ext ? UINT8_MAX : 0;
DUMP_PATTERN_ITEM(has_frag_ext_mask, false, "has_frag_ext",
"%"PRIu8, ipv6_spec->has_frag_ext,
ipv6_mask->has_frag_ext, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT) {
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_spec = item->spec;
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_mask = item->mask;
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_last = item->last;
const struct rte_flow_item_ipv6_frag_ext ipv6_frag_def = {
.hdr.next_header = 0, .hdr.frag_data = 0};
ds_put_cstr(s, "ipv6_frag_ext ");
if (ipv6_frag_spec) {
if (!ipv6_frag_mask) {
ipv6_frag_mask = &ipv6_frag_def;
}
if (!ipv6_frag_last) {
ipv6_frag_last = &ipv6_frag_def;
}
DUMP_PATTERN_ITEM(ipv6_frag_mask->hdr.next_header, item->last,
"next_hdr", "%"PRIu8,
ipv6_frag_spec->hdr.next_header,
ipv6_frag_mask->hdr.next_header,
ipv6_frag_last->hdr.next_header);
DUMP_PATTERN_ITEM(ipv6_frag_mask->hdr.frag_data, item->last,
"frag_data", "0x%"PRIx16,
ntohs(ipv6_frag_spec->hdr.frag_data),
ntohs(ipv6_frag_mask->hdr.frag_data),
ntohs(ipv6_frag_last->hdr.frag_data));
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
const struct rte_flow_item_vxlan *vxlan_spec = item->spec;
const struct rte_flow_item_vxlan *vxlan_mask = item->mask;
ovs_be32 spec_vni, mask_vni;
ds_put_cstr(s, "vxlan ");
if (vxlan_spec) {
if (!vxlan_mask) {
vxlan_mask = &rte_flow_item_vxlan_mask;
}
spec_vni = get_unaligned_be32(ALIGNED_CAST(ovs_be32 *,
vxlan_spec->vni));
mask_vni = get_unaligned_be32(ALIGNED_CAST(ovs_be32 *,
vxlan_mask->vni));
DUMP_PATTERN_ITEM(vxlan_mask->vni, false, "vni", "%"PRIu32,
ntohl(spec_vni) >> 8, ntohl(mask_vni) >> 8, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_GRE) {
const struct rte_flow_item_gre *gre_spec = item->spec;
const struct rte_flow_item_gre *gre_mask = item->mask;
const struct rte_gre_hdr *greh_spec, *greh_mask;
uint8_t c_bit_spec, c_bit_mask;
uint8_t k_bit_spec, k_bit_mask;
ds_put_cstr(s, "gre ");
if (gre_spec) {
if (!gre_mask) {
gre_mask = &rte_flow_item_gre_mask;
}
greh_spec = (struct rte_gre_hdr *) gre_spec;
greh_mask = (struct rte_gre_hdr *) gre_mask;
c_bit_spec = greh_spec->c;
c_bit_mask = greh_mask->c ? UINT8_MAX : 0;
DUMP_PATTERN_ITEM(c_bit_mask, false, "c_bit", "%"PRIu8,
c_bit_spec, c_bit_mask, 0);
k_bit_spec = greh_spec->k;
k_bit_mask = greh_mask->k ? UINT8_MAX : 0;
DUMP_PATTERN_ITEM(k_bit_mask, false, "k_bit", "%"PRIu8,
k_bit_spec, k_bit_mask, 0);
}
ds_put_cstr(s, "/ ");
} else if (item->type == RTE_FLOW_ITEM_TYPE_GRE_KEY) {
const rte_be32_t gre_mask = RTE_BE32(UINT32_MAX);
const rte_be32_t *key_spec = item->spec;
const rte_be32_t *key_mask = item->mask;
ds_put_cstr(s, "gre_key ");
if (key_spec) {
if (!key_mask) {
key_mask = &gre_mask;
}
DUMP_PATTERN_ITEM(*key_mask, false, "value", "%"PRIu32,
ntohl(*key_spec), ntohl(*key_mask), 0);
}
ds_put_cstr(s, "/ ");
} else {
ds_put_format(s, "unknown rte flow pattern (%d)\n", item->type);
}
}
static void
dump_vxlan_encap(struct ds *s, const struct rte_flow_item *items)
{
const struct rte_flow_item_eth *eth = NULL;
const struct rte_flow_item_ipv4 *ipv4 = NULL;
const struct rte_flow_item_ipv6 *ipv6 = NULL;
const struct rte_flow_item_udp *udp = NULL;
const struct rte_flow_item_vxlan *vxlan = NULL;
for (; items && items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
if (items->type == RTE_FLOW_ITEM_TYPE_ETH) {
eth = items->spec;
} else if (items->type == RTE_FLOW_ITEM_TYPE_IPV4) {
ipv4 = items->spec;
} else if (items->type == RTE_FLOW_ITEM_TYPE_IPV6) {
ipv6 = items->spec;
} else if (items->type == RTE_FLOW_ITEM_TYPE_UDP) {
udp = items->spec;
} else if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
vxlan = items->spec;
}
}
ds_put_format(s, "set vxlan ip-version %s ",
ipv4 ? "ipv4" : ipv6 ? "ipv6" : "ERR");
if (vxlan) {
ovs_be32 vni;
vni = get_unaligned_be32(ALIGNED_CAST(ovs_be32 *,
vxlan->vni));
ds_put_format(s, "vni %"PRIu32" ", ntohl(vni) >> 8);
}
if (udp) {
ds_put_format(s, "udp-src %"PRIu16" udp-dst %"PRIu16" ",
ntohs(udp->hdr.src_port), ntohs(udp->hdr.dst_port));
}
if (ipv4) {
ds_put_format(s, "ip-src "IP_FMT" ip-dst "IP_FMT" ",
IP_ARGS(ipv4->hdr.src_addr),
IP_ARGS(ipv4->hdr.dst_addr));
}
if (ipv6) {
struct in6_addr addr;
ds_put_cstr(s, "ip-src ");
memcpy(&addr, ipv6->hdr.src_addr, sizeof addr);
ipv6_format_mapped(&addr, s);
ds_put_cstr(s, " ip-dst ");
memcpy(&addr, ipv6->hdr.dst_addr, sizeof addr);
ipv6_format_mapped(&addr, s);
ds_put_cstr(s, " ");
}
if (eth) {
ds_put_format(s, "eth-src "ETH_ADDR_FMT" eth-dst "ETH_ADDR_FMT,
ETH_ADDR_BYTES_ARGS(eth->src.addr_bytes),
ETH_ADDR_BYTES_ARGS(eth->dst.addr_bytes));
}
}
static void
dump_flow_action(struct ds *s, struct ds *s_extra,
struct flow_actions *flow_actions, int act_index)
{
const struct rte_flow_action *actions = &flow_actions->actions[act_index];
if (actions->type == RTE_FLOW_ACTION_TYPE_END) {
ds_put_cstr(s, "end");
} else if (flow_actions->tnl_pmd_actions_cnt &&
act_index >= flow_actions->tnl_pmd_actions_pos &&
act_index < flow_actions->tnl_pmd_actions_pos +
flow_actions->tnl_pmd_actions_cnt) {
/* Opaque PMD tunnel actions are skipped. */
return;
} else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
const struct rte_flow_action_mark *mark = actions->conf;
ds_put_cstr(s, "mark ");
if (mark) {
ds_put_format(s, "id %d ", mark->id);
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
ds_put_cstr(s, "rss / ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT) {
ds_put_cstr(s, "count / ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_PORT_ID) {
const struct rte_flow_action_port_id *port_id = actions->conf;
ds_put_cstr(s, "port_id ");
if (port_id) {
ds_put_format(s, "original %d id %d ",
port_id->original, port_id->id);
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
ds_put_cstr(s, "drop / ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_MAC_SRC ||
actions->type == RTE_FLOW_ACTION_TYPE_SET_MAC_DST) {
const struct rte_flow_action_set_mac *set_mac = actions->conf;
char *dirstr = actions->type == RTE_FLOW_ACTION_TYPE_SET_MAC_DST
? "dst" : "src";
ds_put_format(s, "set_mac_%s ", dirstr);
if (set_mac) {
ds_put_format(s, "mac_addr "ETH_ADDR_FMT" ",
ETH_ADDR_BYTES_ARGS(set_mac->mac_addr));
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC ||
actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV4_DST) {
const struct rte_flow_action_set_ipv4 *set_ipv4 = actions->conf;
char *dirstr = actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV4_DST
? "dst" : "src";
ds_put_format(s, "set_ipv4_%s ", dirstr);
if (set_ipv4) {
ds_put_format(s, "ipv4_addr "IP_FMT" ",
IP_ARGS(set_ipv4->ipv4_addr));
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_TTL) {
const struct rte_flow_action_set_ttl *set_ttl = actions->conf;
ds_put_cstr(s, "set_ttl ");
if (set_ttl) {
ds_put_format(s, "ttl_value %d ", set_ttl->ttl_value);
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_SRC ||
actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_DST) {
const struct rte_flow_action_set_tp *set_tp = actions->conf;
char *dirstr = actions->type == RTE_FLOW_ACTION_TYPE_SET_TP_DST
? "dst" : "src";
ds_put_format(s, "set_tp_%s ", dirstr);
if (set_tp) {
ds_put_format(s, "port %"PRIu16" ", ntohs(set_tp->port));
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN) {
const struct rte_flow_action_of_push_vlan *of_push_vlan =
actions->conf;
ds_put_cstr(s, "of_push_vlan ");
if (of_push_vlan) {
ds_put_format(s, "ethertype 0x%"PRIx16" ",
ntohs(of_push_vlan->ethertype));
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP) {
const struct rte_flow_action_of_set_vlan_pcp *of_set_vlan_pcp =
actions->conf;
ds_put_cstr(s, "of_set_vlan_pcp ");
if (of_set_vlan_pcp) {
ds_put_format(s, "vlan_pcp %"PRIu8" ", of_set_vlan_pcp->vlan_pcp);
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID) {
const struct rte_flow_action_of_set_vlan_vid *of_set_vlan_vid =
actions->conf;
ds_put_cstr(s, "of_set_vlan_vid ");
if (of_set_vlan_vid) {
ds_put_format(s, "vlan_vid %"PRIu16" ",
ntohs(of_set_vlan_vid->vlan_vid));
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_OF_POP_VLAN) {
ds_put_cstr(s, "of_pop_vlan / ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC ||
actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV6_DST) {
const struct rte_flow_action_set_ipv6 *set_ipv6 = actions->conf;
char *dirstr = actions->type == RTE_FLOW_ACTION_TYPE_SET_IPV6_DST
? "dst" : "src";
ds_put_format(s, "set_ipv6_%s ", dirstr);
if (set_ipv6) {
struct in6_addr addr;
ds_put_cstr(s, "ipv6_addr ");
memcpy(&addr, set_ipv6->ipv6_addr, sizeof addr);
ipv6_format_addr(&addr, s);
ds_put_cstr(s, " ");
}
ds_put_cstr(s, "/ ");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_RAW_ENCAP) {
const struct rte_flow_action_raw_encap *raw_encap = actions->conf;
ds_put_cstr(s, "raw_encap index 0 / ");
if (raw_encap) {
ds_put_format(s_extra, "Raw-encap size=%ld set raw_encap 0 raw "
"pattern is ", raw_encap->size);
for (int i = 0; i < raw_encap->size; i++) {
ds_put_format(s_extra, "%02x", raw_encap->data[i]);
}
ds_put_cstr(s_extra, " / end_set;");
}
} else if (actions->type == RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP) {
const struct rte_flow_action_vxlan_encap *vxlan_encap = actions->conf;
const struct rte_flow_item *items = vxlan_encap->definition;
ds_put_cstr(s, "vxlan_encap / ");
dump_vxlan_encap(s_extra, items);
ds_put_cstr(s_extra, ";");
} else if (actions->type == RTE_FLOW_ACTION_TYPE_JUMP) {
const struct rte_flow_action_jump *jump = actions->conf;
ds_put_cstr(s, "jump ");
if (jump) {
ds_put_format(s, "group %"PRIu32" ", jump->group);
}
ds_put_cstr(s, "/ ");
} else {
ds_put_format(s, "unknown rte flow action (%d)\n", actions->type);
}
}
static struct ds *
dump_flow(struct ds *s, struct ds *s_extra,
const struct rte_flow_attr *attr,
struct flow_patterns *flow_patterns,
struct flow_actions *flow_actions)
{
int i;
if (attr) {
dump_flow_attr(s, s_extra, attr, flow_patterns, flow_actions);
}
ds_put_cstr(s, "pattern ");
for (i = 0; i < flow_patterns->cnt; i++) {
dump_flow_pattern(s, flow_patterns, i);
}
ds_put_cstr(s, "actions ");
for (i = 0; i < flow_actions->cnt; i++) {
dump_flow_action(s, s_extra, flow_actions, i);
}
return s;
}
static struct rte_flow *
netdev_offload_dpdk_flow_create(struct netdev *netdev,
const struct rte_flow_attr *attr,
struct flow_patterns *flow_patterns,
struct flow_actions *flow_actions,
struct rte_flow_error *error)
{
const struct rte_flow_action *actions = flow_actions->actions;
const struct rte_flow_item *items = flow_patterns->items;
struct ds s_extra = DS_EMPTY_INITIALIZER;
struct ds s = DS_EMPTY_INITIALIZER;
struct rte_flow *flow;
char *extra_str;
flow = netdev_dpdk_rte_flow_create(netdev, attr, items, actions, error);
if (flow) {
struct netdev_offload_dpdk_data *data;
unsigned int tid = netdev_offload_thread_id();
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
data->rte_flow_counters[tid]++;
if (!VLOG_DROP_DBG(&rl)) {
dump_flow(&s, &s_extra, attr, flow_patterns, flow_actions);
extra_str = ds_cstr(&s_extra);
VLOG_DBG_RL(&rl, "%s: rte_flow 0x%"PRIxPTR" %s flow create %d %s",
netdev_get_name(netdev), (intptr_t) flow, extra_str,
netdev_dpdk_get_port_id(netdev), ds_cstr(&s));
}
} else {
enum vlog_level level = VLL_WARN;
if (error->type == RTE_FLOW_ERROR_TYPE_ACTION) {
level = VLL_DBG;
}
VLOG_RL(&rl, level, "%s: rte_flow creation failed: %d (%s).",
netdev_get_name(netdev), error->type, error->message);
if (!vlog_should_drop(&this_module, level, &rl)) {
dump_flow(&s, &s_extra, attr, flow_patterns, flow_actions);
extra_str = ds_cstr(&s_extra);
VLOG_RL(&rl, level, "%s: Failed flow: %s flow create %d %s",
netdev_get_name(netdev), extra_str,
netdev_dpdk_get_port_id(netdev), ds_cstr(&s));
}
}
ds_destroy(&s);
ds_destroy(&s_extra);
return flow;
}
static void
add_flow_pattern(struct flow_patterns *patterns, enum rte_flow_item_type type,
const void *spec, const void *mask, const void *last)
{
int cnt = patterns->cnt;
if (cnt == 0) {
patterns->current_max = 8;
patterns->items = xcalloc(patterns->current_max,
sizeof *patterns->items);
} else if (cnt == patterns->current_max) {
patterns->current_max *= 2;
patterns->items = xrealloc(patterns->items, patterns->current_max *
sizeof *patterns->items);
}
patterns->items[cnt].type = type;
patterns->items[cnt].spec = spec;
patterns->items[cnt].mask = mask;
patterns->items[cnt].last = last;
patterns->cnt++;
}
static void
add_flow_action(struct flow_actions *actions, enum rte_flow_action_type type,
const void *conf)
{
int cnt = actions->cnt;
if (cnt == 0) {
actions->current_max = 8;
actions->actions = xcalloc(actions->current_max,
sizeof *actions->actions);
} else if (cnt == actions->current_max) {
actions->current_max *= 2;
actions->actions = xrealloc(actions->actions, actions->current_max *
sizeof *actions->actions);
}
actions->actions[cnt].type = type;
actions->actions[cnt].conf = conf;
actions->cnt++;
}
static void
add_flow_tnl_actions(struct flow_actions *actions,
struct netdev *tnl_netdev,
struct rte_flow_action *tnl_pmd_actions,
uint32_t tnl_pmd_actions_cnt)
{
int i;
actions->tnl_netdev = tnl_netdev;
actions->tnl_pmd_actions_pos = actions->cnt;
actions->tnl_pmd_actions = tnl_pmd_actions;
actions->tnl_pmd_actions_cnt = tnl_pmd_actions_cnt;
for (i = 0; i < tnl_pmd_actions_cnt; i++) {
add_flow_action(actions, tnl_pmd_actions[i].type,
tnl_pmd_actions[i].conf);
}
}
static void
add_flow_tnl_items(struct flow_patterns *patterns,
struct netdev *physdev,
struct rte_flow_item *tnl_pmd_items,
uint32_t tnl_pmd_items_cnt)
{
int i;
patterns->physdev = physdev;
patterns->tnl_pmd_items = tnl_pmd_items;
patterns->tnl_pmd_items_cnt = tnl_pmd_items_cnt;
for (i = 0; i < tnl_pmd_items_cnt; i++) {
add_flow_pattern(patterns, tnl_pmd_items[i].type,
tnl_pmd_items[i].spec, tnl_pmd_items[i].mask, NULL);
}
}
static void
free_flow_patterns(struct flow_patterns *patterns)
{
struct rte_flow_error error;
int i;
if (patterns->tnl_pmd_items) {
struct rte_flow_item *tnl_pmd_items = patterns->tnl_pmd_items;
uint32_t tnl_pmd_items_cnt = patterns->tnl_pmd_items_cnt;
struct netdev *physdev = patterns->physdev;
if (netdev_dpdk_rte_flow_tunnel_item_release(physdev, tnl_pmd_items,
tnl_pmd_items_cnt,
&error)) {
VLOG_DBG_RL(&rl, "%s: netdev_dpdk_rte_flow_tunnel_item_release "
"failed: %d (%s).", netdev_get_name(physdev),
error.type, error.message);
}
}
for (i = patterns->tnl_pmd_items_cnt; i < patterns->cnt; i++) {
if (patterns->items[i].spec) {
free(CONST_CAST(void *, patterns->items[i].spec));
}
if (patterns->items[i].mask) {
free(CONST_CAST(void *, patterns->items[i].mask));
}
if (patterns->items[i].last) {
free(CONST_CAST(void *, patterns->items[i].last));
}
}
free(patterns->items);
patterns->items = NULL;
patterns->cnt = 0;
ds_destroy(&patterns->s_tnl);
}
static void
free_flow_actions(struct flow_actions *actions)
{
struct rte_flow_error error;
int i;
for (i = 0; i < actions->cnt; i++) {
if (actions->tnl_pmd_actions_cnt &&
i == actions->tnl_pmd_actions_pos) {
if (netdev_dpdk_rte_flow_tunnel_action_decap_release(
actions->tnl_netdev, actions->tnl_pmd_actions,
actions->tnl_pmd_actions_cnt, &error)) {
VLOG_DBG_RL(&rl, "%s: "
"netdev_dpdk_rte_flow_tunnel_action_decap_release "
"failed: %d (%s).",
netdev_get_name(actions->tnl_netdev),
error.type, error.message);
}
i += actions->tnl_pmd_actions_cnt - 1;
continue;
}
if (actions->actions[i].conf) {
free(CONST_CAST(void *, actions->actions[i].conf));
}
}
free(actions->actions);
actions->actions = NULL;
actions->cnt = 0;
ds_destroy(&actions->s_tnl);
}
static int
vport_to_rte_tunnel(struct netdev *vport,
struct rte_flow_tunnel *tunnel,
struct netdev *netdev,
struct ds *s_tnl)
{
const struct netdev_tunnel_config *tnl_cfg;
memset(tunnel, 0, sizeof *tunnel);
tnl_cfg = netdev_get_tunnel_config(vport);
if (!tnl_cfg) {
return -1;
}
if (!IN6_IS_ADDR_V4MAPPED(&tnl_cfg->ipv6_dst)) {
tunnel->is_ipv6 = true;
}
if (!strcmp(netdev_get_type(vport), "vxlan")) {
tunnel->type = RTE_FLOW_ITEM_TYPE_VXLAN;
tunnel->tp_dst = tnl_cfg->dst_port;
if (!VLOG_DROP_DBG(&rl)) {
ds_put_format(s_tnl, "flow tunnel create %d type vxlan; ",
netdev_dpdk_get_port_id(netdev));
}
} else if (!strcmp(netdev_get_type(vport), "gre")) {
tunnel->type = RTE_FLOW_ITEM_TYPE_GRE;
if (!VLOG_DROP_DBG(&rl)) {
ds_put_format(s_tnl, "flow tunnel create %d type gre; ",
netdev_dpdk_get_port_id(netdev));
}
} else {
VLOG_DBG_RL(&rl, "vport type '%s' is not supported",
netdev_get_type(vport));
return -1;
}
return 0;
}
static int
add_vport_match(struct flow_patterns *patterns,
odp_port_t orig_in_port,
struct netdev *tnldev)
{
struct rte_flow_item *tnl_pmd_items;
struct rte_flow_tunnel tunnel;
struct rte_flow_error error;
uint32_t tnl_pmd_items_cnt;
struct netdev *physdev;
int ret;
physdev = netdev_ports_get(orig_in_port, tnldev->dpif_type);
if (physdev == NULL) {
return -1;
}
ret = vport_to_rte_tunnel(tnldev, &tunnel, physdev, &patterns->s_tnl);
if (ret) {
goto out;
}
ret = netdev_dpdk_rte_flow_tunnel_match(physdev, &tunnel, &tnl_pmd_items,
&tnl_pmd_items_cnt, &error);
if (ret) {
VLOG_DBG_RL(&rl, "%s: netdev_dpdk_rte_flow_tunnel_match failed: "
"%d (%s).", netdev_get_name(physdev), error.type,
error.message);
goto out;
}
add_flow_tnl_items(patterns, physdev, tnl_pmd_items, tnl_pmd_items_cnt);
out:
netdev_close(physdev);
return ret;
}
static int
parse_tnl_ip_match(struct flow_patterns *patterns,
struct match *match,
uint8_t proto)
{
struct flow *consumed_masks;
consumed_masks = &match->wc.masks;
/* IP v4 */
if (match->wc.masks.tunnel.ip_src || match->wc.masks.tunnel.ip_dst) {
struct rte_flow_item_ipv4 *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.type_of_service = match->flow.tunnel.ip_tos;
spec->hdr.time_to_live = match->flow.tunnel.ip_ttl;
spec->hdr.next_proto_id = proto;
spec->hdr.src_addr = match->flow.tunnel.ip_src;
spec->hdr.dst_addr = match->flow.tunnel.ip_dst;
mask->hdr.type_of_service = match->wc.masks.tunnel.ip_tos;
mask->hdr.time_to_live = match->wc.masks.tunnel.ip_ttl;
mask->hdr.next_proto_id = UINT8_MAX;
mask->hdr.src_addr = match->wc.masks.tunnel.ip_src;
mask->hdr.dst_addr = match->wc.masks.tunnel.ip_dst;
consumed_masks->tunnel.ip_tos = 0;
consumed_masks->tunnel.ip_ttl = 0;
consumed_masks->tunnel.ip_src = 0;
consumed_masks->tunnel.ip_dst = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV4, spec, mask, NULL);
} else if (!is_all_zeros(&match->wc.masks.tunnel.ipv6_src,
sizeof(struct in6_addr)) ||
!is_all_zeros(&match->wc.masks.tunnel.ipv6_dst,
sizeof(struct in6_addr))) {
/* IP v6 */
struct rte_flow_item_ipv6 *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.proto = proto;
spec->hdr.hop_limits = match->flow.tunnel.ip_ttl;
spec->hdr.vtc_flow = htonl((uint32_t) match->flow.tunnel.ip_tos <<
RTE_IPV6_HDR_TC_SHIFT);
memcpy(spec->hdr.src_addr, &match->flow.tunnel.ipv6_src,
sizeof spec->hdr.src_addr);
memcpy(spec->hdr.dst_addr, &match->flow.tunnel.ipv6_dst,
sizeof spec->hdr.dst_addr);
mask->hdr.proto = UINT8_MAX;
mask->hdr.hop_limits = match->wc.masks.tunnel.ip_ttl;
mask->hdr.vtc_flow = htonl((uint32_t) match->wc.masks.tunnel.ip_tos <<
RTE_IPV6_HDR_TC_SHIFT);
memcpy(mask->hdr.src_addr, &match->wc.masks.tunnel.ipv6_src,
sizeof mask->hdr.src_addr);
memcpy(mask->hdr.dst_addr, &match->wc.masks.tunnel.ipv6_dst,
sizeof mask->hdr.dst_addr);
consumed_masks->tunnel.ip_tos = 0;
consumed_masks->tunnel.ip_ttl = 0;
memset(&consumed_masks->tunnel.ipv6_src, 0,
sizeof consumed_masks->tunnel.ipv6_src);
memset(&consumed_masks->tunnel.ipv6_dst, 0,
sizeof consumed_masks->tunnel.ipv6_dst);
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV6, spec, mask, NULL);
} else {
VLOG_ERR_RL(&rl, "Tunnel L3 protocol is neither IPv4 nor IPv6");
return -1;
}
return 0;
}
static void
parse_tnl_udp_match(struct flow_patterns *patterns,
struct match *match)
{
struct flow *consumed_masks;
struct rte_flow_item_udp *spec, *mask;
consumed_masks = &match->wc.masks;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.src_port = match->flow.tunnel.tp_src;
spec->hdr.dst_port = match->flow.tunnel.tp_dst;
mask->hdr.src_port = match->wc.masks.tunnel.tp_src;
mask->hdr.dst_port = match->wc.masks.tunnel.tp_dst;
consumed_masks->tunnel.tp_src = 0;
consumed_masks->tunnel.tp_dst = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_UDP, spec, mask, NULL);
}
static int
parse_vxlan_match(struct flow_patterns *patterns,
struct match *match)
{
struct rte_flow_item_vxlan *vx_spec, *vx_mask;
struct flow *consumed_masks;
int ret;
ret = parse_tnl_ip_match(patterns, match, IPPROTO_UDP);
if (ret) {
return -1;
}
parse_tnl_udp_match(patterns, match);
consumed_masks = &match->wc.masks;
/* VXLAN */
vx_spec = xzalloc(sizeof *vx_spec);
vx_mask = xzalloc(sizeof *vx_mask);
put_unaligned_be32(ALIGNED_CAST(ovs_be32 *, vx_spec->vni),
htonl(ntohll(match->flow.tunnel.tun_id) << 8));
put_unaligned_be32(ALIGNED_CAST(ovs_be32 *, vx_mask->vni),
htonl(ntohll(match->wc.masks.tunnel.tun_id) << 8));
consumed_masks->tunnel.tun_id = 0;
consumed_masks->tunnel.flags = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_VXLAN, vx_spec, vx_mask,
NULL);
return 0;
}
static int
parse_gre_match(struct flow_patterns *patterns,
struct match *match)
{
struct rte_flow_item_gre *gre_spec, *gre_mask;
struct rte_gre_hdr *greh_spec, *greh_mask;
rte_be32_t *key_spec, *key_mask;
struct flow *consumed_masks;
int ret;
ret = parse_tnl_ip_match(patterns, match, IPPROTO_GRE);
if (ret) {
return -1;
}
gre_spec = xzalloc(sizeof *gre_spec);
gre_mask = xzalloc(sizeof *gre_mask);
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_GRE, gre_spec, gre_mask,
NULL);
consumed_masks = &match->wc.masks;
greh_spec = (struct rte_gre_hdr *) gre_spec;
greh_mask = (struct rte_gre_hdr *) gre_mask;
if (match->wc.masks.tunnel.flags & FLOW_TNL_F_CSUM) {
greh_spec->c = !!(match->flow.tunnel.flags & FLOW_TNL_F_CSUM);
greh_mask->c = 1;
consumed_masks->tunnel.flags &= ~FLOW_TNL_F_CSUM;
}
if (match->wc.masks.tunnel.flags & FLOW_TNL_F_KEY) {
greh_spec->k = !!(match->flow.tunnel.flags & FLOW_TNL_F_KEY);
greh_mask->k = 1;
key_spec = xzalloc(sizeof *key_spec);
key_mask = xzalloc(sizeof *key_mask);
*key_spec = htonl(ntohll(match->flow.tunnel.tun_id));
*key_mask = htonl(ntohll(match->wc.masks.tunnel.tun_id));
consumed_masks->tunnel.tun_id = 0;
consumed_masks->tunnel.flags &= ~FLOW_TNL_F_KEY;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_GRE_KEY, key_spec,
key_mask, NULL);
}
consumed_masks->tunnel.flags &= ~FLOW_TNL_F_DONT_FRAGMENT;
return 0;
}
static int OVS_UNUSED
parse_flow_tnl_match(struct netdev *tnldev,
struct flow_patterns *patterns,
odp_port_t orig_in_port,
struct match *match)
{
int ret;
ret = add_vport_match(patterns, orig_in_port, tnldev);
if (ret) {
return ret;
}
if (!strcmp(netdev_get_type(tnldev), "vxlan")) {
ret = parse_vxlan_match(patterns, match);
}
else if (!strcmp(netdev_get_type(tnldev), "gre")) {
ret = parse_gre_match(patterns, match);
}
return ret;
}
static int
parse_flow_match(struct netdev *netdev,
odp_port_t orig_in_port OVS_UNUSED,
struct flow_patterns *patterns,
struct match *match)
{
struct rte_flow_item_eth *eth_spec = NULL, *eth_mask = NULL;
struct flow *consumed_masks;
uint8_t proto = 0;
consumed_masks = &match->wc.masks;
if (!flow_tnl_dst_is_set(&match->flow.tunnel)) {
memset(&consumed_masks->tunnel, 0, sizeof consumed_masks->tunnel);
}
patterns->physdev = netdev;
#ifdef ALLOW_EXPERIMENTAL_API /* Packet restoration API required. */
if (netdev_vport_is_vport_class(netdev->netdev_class) &&
parse_flow_tnl_match(netdev, patterns, orig_in_port, match)) {
return -1;
}
#endif
memset(&consumed_masks->in_port, 0, sizeof consumed_masks->in_port);
/* recirc id must be zero. */
if (match->wc.masks.recirc_id & match->flow.recirc_id) {
return -1;
}
consumed_masks->recirc_id = 0;
consumed_masks->packet_type = 0;
/* Eth */
if (match->wc.masks.dl_type ||
!eth_addr_is_zero(match->wc.masks.dl_src) ||
!eth_addr_is_zero(match->wc.masks.dl_dst)) {
struct rte_flow_item_eth *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
memcpy(&spec->dst, &match->flow.dl_dst, sizeof spec->dst);
memcpy(&spec->src, &match->flow.dl_src, sizeof spec->src);
spec->type = match->flow.dl_type;
memcpy(&mask->dst, &match->wc.masks.dl_dst, sizeof mask->dst);
memcpy(&mask->src, &match->wc.masks.dl_src, sizeof mask->src);
mask->type = match->wc.masks.dl_type;
memset(&consumed_masks->dl_dst, 0, sizeof consumed_masks->dl_dst);
memset(&consumed_masks->dl_src, 0, sizeof consumed_masks->dl_src);
consumed_masks->dl_type = 0;
spec->has_vlan = 0;
mask->has_vlan = 1;
eth_spec = spec;
eth_mask = mask;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_ETH, spec, mask, NULL);
}
/* VLAN */
if (match->wc.masks.vlans[0].tci && match->flow.vlans[0].tci) {
struct rte_flow_item_vlan *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->tci = match->flow.vlans[0].tci & ~htons(VLAN_CFI);
mask->tci = match->wc.masks.vlans[0].tci & ~htons(VLAN_CFI);
if (eth_spec && eth_mask) {
eth_spec->has_vlan = 1;
eth_mask->has_vlan = 1;
spec->inner_type = eth_spec->type;
mask->inner_type = eth_mask->type;
eth_spec->type = match->flow.vlans[0].tpid;
eth_mask->type = match->wc.masks.vlans[0].tpid;
}
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_VLAN, spec, mask, NULL);
}
/* For untagged matching match->wc.masks.vlans[0].tci is 0xFFFF and
* match->flow.vlans[0].tci is 0. Consuming is needed outside of the if
* scope to handle that.
*/
memset(&consumed_masks->vlans[0], 0, sizeof consumed_masks->vlans[0]);
/* IP v4 */
if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
struct rte_flow_item_ipv4 *spec, *mask, *last = NULL;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.type_of_service = match->flow.nw_tos;
spec->hdr.time_to_live = match->flow.nw_ttl;
spec->hdr.next_proto_id = match->flow.nw_proto;
spec->hdr.src_addr = match->flow.nw_src;
spec->hdr.dst_addr = match->flow.nw_dst;
mask->hdr.type_of_service = match->wc.masks.nw_tos;
mask->hdr.time_to_live = match->wc.masks.nw_ttl;
mask->hdr.next_proto_id = match->wc.masks.nw_proto;
mask->hdr.src_addr = match->wc.masks.nw_src;
mask->hdr.dst_addr = match->wc.masks.nw_dst;
consumed_masks->nw_tos = 0;
consumed_masks->nw_ttl = 0;
consumed_masks->nw_proto = 0;
consumed_masks->nw_src = 0;
consumed_masks->nw_dst = 0;
if (match->wc.masks.nw_frag & FLOW_NW_FRAG_ANY) {
if (!(match->flow.nw_frag & FLOW_NW_FRAG_ANY)) {
/* frag=no. */
spec->hdr.fragment_offset = 0;
mask->hdr.fragment_offset = htons(RTE_IPV4_HDR_OFFSET_MASK
| RTE_IPV4_HDR_MF_FLAG);
} else if (match->wc.masks.nw_frag & FLOW_NW_FRAG_LATER) {
if (!(match->flow.nw_frag & FLOW_NW_FRAG_LATER)) {
/* frag=first. */
spec->hdr.fragment_offset = htons(RTE_IPV4_HDR_MF_FLAG);
mask->hdr.fragment_offset = htons(RTE_IPV4_HDR_OFFSET_MASK
| RTE_IPV4_HDR_MF_FLAG);
} else {
/* frag=later. */
last = xzalloc(sizeof *last);
spec->hdr.fragment_offset =
htons(1 << RTE_IPV4_HDR_FO_SHIFT);
mask->hdr.fragment_offset =
htons(RTE_IPV4_HDR_OFFSET_MASK);
last->hdr.fragment_offset =
htons(RTE_IPV4_HDR_OFFSET_MASK);
}
} else {
VLOG_WARN_RL(&rl, "Unknown IPv4 frag (0x%x/0x%x)",
match->flow.nw_frag, match->wc.masks.nw_frag);
return -1;
}
consumed_masks->nw_frag = 0;
}
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV4, spec, mask, last);
/* Save proto for L4 protocol setup. */
proto = spec->hdr.next_proto_id &
mask->hdr.next_proto_id;
}
/* IP v6 */
if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
struct rte_flow_item_ipv6 *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.proto = match->flow.nw_proto;
spec->hdr.hop_limits = match->flow.nw_ttl;
spec->hdr.vtc_flow =
htonl((uint32_t) match->flow.nw_tos << RTE_IPV6_HDR_TC_SHIFT);
memcpy(spec->hdr.src_addr, &match->flow.ipv6_src,
sizeof spec->hdr.src_addr);
memcpy(spec->hdr.dst_addr, &match->flow.ipv6_dst,
sizeof spec->hdr.dst_addr);
if ((match->wc.masks.nw_frag & FLOW_NW_FRAG_ANY)
&& (match->flow.nw_frag & FLOW_NW_FRAG_ANY)) {
spec->has_frag_ext = 1;
}
mask->hdr.proto = match->wc.masks.nw_proto;
mask->hdr.hop_limits = match->wc.masks.nw_ttl;
mask->hdr.vtc_flow =
htonl((uint32_t) match->wc.masks.nw_tos << RTE_IPV6_HDR_TC_SHIFT);
memcpy(mask->hdr.src_addr, &match->wc.masks.ipv6_src,
sizeof mask->hdr.src_addr);
memcpy(mask->hdr.dst_addr, &match->wc.masks.ipv6_dst,
sizeof mask->hdr.dst_addr);
consumed_masks->nw_ttl = 0;
consumed_masks->nw_tos = 0;
memset(&consumed_masks->ipv6_src, 0, sizeof consumed_masks->ipv6_src);
memset(&consumed_masks->ipv6_dst, 0, sizeof consumed_masks->ipv6_dst);
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV6, spec, mask, NULL);
/* Save proto for L4 protocol setup. */
proto = spec->hdr.proto & mask->hdr.proto;
if (spec->has_frag_ext) {
struct rte_flow_item_ipv6_frag_ext *frag_spec, *frag_mask,
*frag_last = NULL;
frag_spec = xzalloc(sizeof *frag_spec);
frag_mask = xzalloc(sizeof *frag_mask);
if (match->wc.masks.nw_frag & FLOW_NW_FRAG_LATER) {
if (!(match->flow.nw_frag & FLOW_NW_FRAG_LATER)) {
/* frag=first. */
frag_spec->hdr.frag_data = htons(RTE_IPV6_EHDR_MF_MASK);
frag_mask->hdr.frag_data = htons(RTE_IPV6_EHDR_MF_MASK |
RTE_IPV6_EHDR_FO_MASK);
/* Move the proto match to the extension item. */
frag_spec->hdr.next_header = match->flow.nw_proto;
frag_mask->hdr.next_header = match->wc.masks.nw_proto;
spec->hdr.proto = 0;
mask->hdr.proto = 0;
} else {
/* frag=later. */
frag_last = xzalloc(sizeof *frag_last);
frag_spec->hdr.frag_data =
htons(1 << RTE_IPV6_EHDR_FO_SHIFT);
frag_mask->hdr.frag_data = htons(RTE_IPV6_EHDR_FO_MASK);
frag_last->hdr.frag_data = htons(RTE_IPV6_EHDR_FO_MASK);
/* There can't be a proto for later frags. */
spec->hdr.proto = 0;
mask->hdr.proto = 0;
}
} else {
VLOG_WARN_RL(&rl, "Unknown IPv6 frag (0x%x/0x%x)",
match->flow.nw_frag, match->wc.masks.nw_frag);
return -1;
}
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT,
frag_spec, frag_mask, frag_last);
}
if (match->wc.masks.nw_frag) {
/* frag=no is indicated by spec->has_frag_ext=0. */
mask->has_frag_ext = 1;
consumed_masks->nw_frag = 0;
}
consumed_masks->nw_proto = 0;
}
if (proto != IPPROTO_ICMP && proto != IPPROTO_UDP &&
proto != IPPROTO_SCTP && proto != IPPROTO_TCP &&
(match->wc.masks.tp_src ||
match->wc.masks.tp_dst ||
match->wc.masks.tcp_flags)) {
VLOG_DBG("L4 Protocol (%u) not supported", proto);
return -1;
}
if (proto == IPPROTO_TCP) {
struct rte_flow_item_tcp *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.src_port = match->flow.tp_src;
spec->hdr.dst_port = match->flow.tp_dst;
spec->hdr.data_off = ntohs(match->flow.tcp_flags) >> 8;
spec->hdr.tcp_flags = ntohs(match->flow.tcp_flags) & 0xff;
mask->hdr.src_port = match->wc.masks.tp_src;
mask->hdr.dst_port = match->wc.masks.tp_dst;
mask->hdr.data_off = ntohs(match->wc.masks.tcp_flags) >> 8;
mask->hdr.tcp_flags = ntohs(match->wc.masks.tcp_flags) & 0xff;
consumed_masks->tp_src = 0;
consumed_masks->tp_dst = 0;
consumed_masks->tcp_flags = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_TCP, spec, mask, NULL);
} else if (proto == IPPROTO_UDP) {
struct rte_flow_item_udp *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.src_port = match->flow.tp_src;
spec->hdr.dst_port = match->flow.tp_dst;
mask->hdr.src_port = match->wc.masks.tp_src;
mask->hdr.dst_port = match->wc.masks.tp_dst;
consumed_masks->tp_src = 0;
consumed_masks->tp_dst = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_UDP, spec, mask, NULL);
} else if (proto == IPPROTO_SCTP) {
struct rte_flow_item_sctp *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.src_port = match->flow.tp_src;
spec->hdr.dst_port = match->flow.tp_dst;
mask->hdr.src_port = match->wc.masks.tp_src;
mask->hdr.dst_port = match->wc.masks.tp_dst;
consumed_masks->tp_src = 0;
consumed_masks->tp_dst = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_SCTP, spec, mask, NULL);
} else if (proto == IPPROTO_ICMP) {
struct rte_flow_item_icmp *spec, *mask;
spec = xzalloc(sizeof *spec);
mask = xzalloc(sizeof *mask);
spec->hdr.icmp_type = (uint8_t) ntohs(match->flow.tp_src);
spec->hdr.icmp_code = (uint8_t) ntohs(match->flow.tp_dst);
mask->hdr.icmp_type = (uint8_t) ntohs(match->wc.masks.tp_src);
mask->hdr.icmp_code = (uint8_t) ntohs(match->wc.masks.tp_dst);
consumed_masks->tp_src = 0;
consumed_masks->tp_dst = 0;
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_ICMP, spec, mask, NULL);
}
add_flow_pattern(patterns, RTE_FLOW_ITEM_TYPE_END, NULL, NULL, NULL);
if (!is_all_zeros(consumed_masks, sizeof *consumed_masks)) {
return -1;
}
return 0;
}
static void
add_flow_mark_rss_actions(struct flow_actions *actions,
uint32_t flow_mark,
const struct netdev *netdev)
{
struct rte_flow_action_mark *mark;
struct action_rss_data {
struct rte_flow_action_rss conf;
uint16_t queue[0];
} *rss_data;
BUILD_ASSERT_DECL(offsetof(struct action_rss_data, conf) == 0);
int i;
mark = xzalloc(sizeof *mark);
mark->id = flow_mark;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_MARK, mark);
rss_data = xmalloc(sizeof *rss_data +
netdev_n_rxq(netdev) * sizeof rss_data->queue[0]);
*rss_data = (struct action_rss_data) {
.conf = (struct rte_flow_action_rss) {
.func = RTE_ETH_HASH_FUNCTION_DEFAULT,
.level = 0,
.types = RTE_ETH_RSS_IP | RTE_ETH_RSS_UDP | RTE_ETH_RSS_TCP,
.queue_num = netdev_n_rxq(netdev),
.queue = rss_data->queue,
.key_len = 0,
.key = NULL
},
};
/* Override queue array with default. */
for (i = 0; i < netdev_n_rxq(netdev); i++) {
rss_data->queue[i] = i;
}
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_RSS, &rss_data->conf);
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_END, NULL);
}
static struct rte_flow *
netdev_offload_dpdk_mark_rss(struct flow_patterns *patterns,
struct netdev *netdev,
uint32_t flow_mark)
{
struct flow_actions actions = {
.actions = NULL,
.cnt = 0,
.s_tnl = DS_EMPTY_INITIALIZER,
};
const struct rte_flow_attr flow_attr = {
.group = 0,
.priority = 0,
.ingress = 1,
.egress = 0
};
struct rte_flow_error error;
struct rte_flow *flow;
add_flow_mark_rss_actions(&actions, flow_mark, netdev);
flow = netdev_offload_dpdk_flow_create(netdev, &flow_attr, patterns,
&actions, &error);
free_flow_actions(&actions);
return flow;
}
static void
add_count_action(struct flow_actions *actions)
{
struct rte_flow_action_count *count = xzalloc(sizeof *count);
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_COUNT, count);
}
static int
add_port_id_action(struct flow_actions *actions,
struct netdev *outdev)
{
struct rte_flow_action_port_id *port_id;
int outdev_id;
outdev_id = netdev_dpdk_get_port_id(outdev);
if (outdev_id < 0) {
return -1;
}
port_id = xzalloc(sizeof *port_id);
port_id->id = outdev_id;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_PORT_ID, port_id);
return 0;
}
static int
add_output_action(struct netdev *netdev,
struct flow_actions *actions,
const struct nlattr *nla)
{
struct netdev *outdev;
odp_port_t port;
int ret = 0;
port = nl_attr_get_odp_port(nla);
outdev = netdev_ports_get(port, netdev->dpif_type);
if (outdev == NULL) {
VLOG_DBG_RL(&rl, "Cannot find netdev for odp port %"PRIu32, port);
return -1;
}
if (!netdev_flow_api_equals(netdev, outdev) ||
add_port_id_action(actions, outdev)) {
VLOG_DBG_RL(&rl, "%s: Output to port \'%s\' cannot be offloaded.",
netdev_get_name(netdev), netdev_get_name(outdev));
ret = -1;
}
netdev_close(outdev);
return ret;
}
static int
add_set_flow_action__(struct flow_actions *actions,
const void *value, void *mask,
const size_t size, const int attr)
{
void *spec;
if (mask) {
/* DPDK does not support partially masked set actions. In such
* case, fail the offload.
*/
if (is_all_zeros(mask, size)) {
return 0;
}
if (!is_all_ones(mask, size)) {
VLOG_DBG_RL(&rl, "Partial mask is not supported");
return -1;
}
}
spec = xzalloc(size);
memcpy(spec, value, size);
add_flow_action(actions, attr, spec);
/* Clear used mask for later checking. */
if (mask) {
memset(mask, 0, size);
}
return 0;
}
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_mac) ==
MEMBER_SIZEOF(struct ovs_key_ethernet, eth_src));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_mac) ==
MEMBER_SIZEOF(struct ovs_key_ethernet, eth_dst));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ipv4) ==
MEMBER_SIZEOF(struct ovs_key_ipv4, ipv4_src));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ipv4) ==
MEMBER_SIZEOF(struct ovs_key_ipv4, ipv4_dst));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ttl) ==
MEMBER_SIZEOF(struct ovs_key_ipv4, ipv4_ttl));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ipv6) ==
MEMBER_SIZEOF(struct ovs_key_ipv6, ipv6_src));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ipv6) ==
MEMBER_SIZEOF(struct ovs_key_ipv6, ipv6_dst));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_ttl) ==
MEMBER_SIZEOF(struct ovs_key_ipv6, ipv6_hlimit));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
MEMBER_SIZEOF(struct ovs_key_tcp, tcp_src));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
MEMBER_SIZEOF(struct ovs_key_tcp, tcp_dst));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
MEMBER_SIZEOF(struct ovs_key_udp, udp_src));
BUILD_ASSERT_DECL(sizeof(struct rte_flow_action_set_tp) ==
MEMBER_SIZEOF(struct ovs_key_udp, udp_dst));
static int
parse_set_actions(struct flow_actions *actions,
const struct nlattr *set_actions,
const size_t set_actions_len,
bool masked)
{
const struct nlattr *sa;
unsigned int sleft;
#define add_set_flow_action(field, type) \
if (add_set_flow_action__(actions, &key->field, \
mask ? CONST_CAST(void *, &mask->field) : NULL, \
sizeof key->field, type)) { \
return -1; \
}
NL_ATTR_FOR_EACH_UNSAFE (sa, sleft, set_actions, set_actions_len) {
if (nl_attr_type(sa) == OVS_KEY_ATTR_ETHERNET) {
const struct ovs_key_ethernet *key = nl_attr_get(sa);
const struct ovs_key_ethernet *mask = masked ? key + 1 : NULL;
add_set_flow_action(eth_src, RTE_FLOW_ACTION_TYPE_SET_MAC_SRC);
add_set_flow_action(eth_dst, RTE_FLOW_ACTION_TYPE_SET_MAC_DST);
if (mask && !is_all_zeros(mask, sizeof *mask)) {
VLOG_DBG_RL(&rl, "Unsupported ETHERNET set action");
return -1;
}
} else if (nl_attr_type(sa) == OVS_KEY_ATTR_IPV4) {
const struct ovs_key_ipv4 *key = nl_attr_get(sa);
const struct ovs_key_ipv4 *mask = masked ? key + 1 : NULL;
add_set_flow_action(ipv4_src, RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC);
add_set_flow_action(ipv4_dst, RTE_FLOW_ACTION_TYPE_SET_IPV4_DST);
add_set_flow_action(ipv4_ttl, RTE_FLOW_ACTION_TYPE_SET_TTL);
if (mask && !is_all_zeros(mask, sizeof *mask)) {
VLOG_DBG_RL(&rl, "Unsupported IPv4 set action");
return -1;
}
} else if (nl_attr_type(sa) == OVS_KEY_ATTR_IPV6) {
const struct ovs_key_ipv6 *key = nl_attr_get(sa);
const struct ovs_key_ipv6 *mask = masked ? key + 1 : NULL;
add_set_flow_action(ipv6_src, RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC);
add_set_flow_action(ipv6_dst, RTE_FLOW_ACTION_TYPE_SET_IPV6_DST);
add_set_flow_action(ipv6_hlimit, RTE_FLOW_ACTION_TYPE_SET_TTL);
if (mask && !is_all_zeros(mask, sizeof *mask)) {
VLOG_DBG_RL(&rl, "Unsupported IPv6 set action");
return -1;
}
} else if (nl_attr_type(sa) == OVS_KEY_ATTR_TCP) {
const struct ovs_key_tcp *key = nl_attr_get(sa);
const struct ovs_key_tcp *mask = masked ? key + 1 : NULL;
add_set_flow_action(tcp_src, RTE_FLOW_ACTION_TYPE_SET_TP_SRC);
add_set_flow_action(tcp_dst, RTE_FLOW_ACTION_TYPE_SET_TP_DST);
if (mask && !is_all_zeros(mask, sizeof *mask)) {
VLOG_DBG_RL(&rl, "Unsupported TCP set action");
return -1;
}
} else if (nl_attr_type(sa) == OVS_KEY_ATTR_UDP) {
const struct ovs_key_udp *key = nl_attr_get(sa);
const struct ovs_key_udp *mask = masked ? key + 1 : NULL;
add_set_flow_action(udp_src, RTE_FLOW_ACTION_TYPE_SET_TP_SRC);
add_set_flow_action(udp_dst, RTE_FLOW_ACTION_TYPE_SET_TP_DST);
if (mask && !is_all_zeros(mask, sizeof *mask)) {
VLOG_DBG_RL(&rl, "Unsupported UDP set action");
return -1;
}
} else {
VLOG_DBG_RL(&rl,
"Unsupported set action type %d", nl_attr_type(sa));
return -1;
}
}
return 0;
}
/* Maximum number of items in struct rte_flow_action_vxlan_encap.
* ETH / IPv4(6) / UDP / VXLAN / END
*/
#define ACTION_VXLAN_ENCAP_ITEMS_NUM 5
static int
add_vxlan_encap_action(struct flow_actions *actions,
const void *header)
{
const struct eth_header *eth;
const struct udp_header *udp;
struct vxlan_data {
struct rte_flow_action_vxlan_encap conf;
struct rte_flow_item items[ACTION_VXLAN_ENCAP_ITEMS_NUM];
} *vxlan_data;
BUILD_ASSERT_DECL(offsetof(struct vxlan_data, conf) == 0);
const void *vxlan;
const void *l3;
const void *l4;
int field;
vxlan_data = xzalloc(sizeof *vxlan_data);
field = 0;
eth = header;
/* Ethernet */
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_ETH;
vxlan_data->items[field].spec = eth;
vxlan_data->items[field].mask = &rte_flow_item_eth_mask;
field++;
l3 = eth + 1;
/* IP */
if (eth->eth_type == htons(ETH_TYPE_IP)) {
/* IPv4 */
const struct ip_header *ip = l3;
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_IPV4;
vxlan_data->items[field].spec = ip;
vxlan_data->items[field].mask = &rte_flow_item_ipv4_mask;
if (ip->ip_proto != IPPROTO_UDP) {
goto err;
}
l4 = (ip + 1);
} else if (eth->eth_type == htons(ETH_TYPE_IPV6)) {
const struct ovs_16aligned_ip6_hdr *ip6 = l3;
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_IPV6;
vxlan_data->items[field].spec = ip6;
vxlan_data->items[field].mask = &rte_flow_item_ipv6_mask;
if (ip6->ip6_nxt != IPPROTO_UDP) {
goto err;
}
l4 = (ip6 + 1);
} else {
goto err;
}
field++;
udp = l4;
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_UDP;
vxlan_data->items[field].spec = udp;
vxlan_data->items[field].mask = &rte_flow_item_udp_mask;
field++;
vxlan = (udp + 1);
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_VXLAN;
vxlan_data->items[field].spec = vxlan;
vxlan_data->items[field].mask = &rte_flow_item_vxlan_mask;
field++;
vxlan_data->items[field].type = RTE_FLOW_ITEM_TYPE_END;
vxlan_data->conf.definition = vxlan_data->items;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP, vxlan_data);
return 0;
err:
free(vxlan_data);
return -1;
}
static int
parse_vlan_push_action(struct flow_actions *actions,
const struct ovs_action_push_vlan *vlan_push)
{
struct rte_flow_action_of_push_vlan *rte_push_vlan;
struct rte_flow_action_of_set_vlan_pcp *rte_vlan_pcp;
struct rte_flow_action_of_set_vlan_vid *rte_vlan_vid;
rte_push_vlan = xzalloc(sizeof *rte_push_vlan);
rte_push_vlan->ethertype = vlan_push->vlan_tpid;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN, rte_push_vlan);
rte_vlan_pcp = xzalloc(sizeof *rte_vlan_pcp);
rte_vlan_pcp->vlan_pcp = vlan_tci_to_pcp(vlan_push->vlan_tci);
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP,
rte_vlan_pcp);
rte_vlan_vid = xzalloc(sizeof *rte_vlan_vid);
rte_vlan_vid->vlan_vid = htons(vlan_tci_to_vid(vlan_push->vlan_tci));
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID,
rte_vlan_vid);
return 0;
}
static void
add_tunnel_push_action(struct flow_actions *actions,
const struct ovs_action_push_tnl *tnl_push)
{
struct rte_flow_action_raw_encap *raw_encap;
if (tnl_push->tnl_type == OVS_VPORT_TYPE_VXLAN &&
!add_vxlan_encap_action(actions, tnl_push->header)) {
return;
}
raw_encap = xzalloc(sizeof *raw_encap);
raw_encap->data = (uint8_t *) tnl_push->header;
raw_encap->preserve = NULL;
raw_encap->size = tnl_push->header_len;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_RAW_ENCAP, raw_encap);
}
static int
parse_clone_actions(struct netdev *netdev,
struct flow_actions *actions,
const struct nlattr *clone_actions,
const size_t clone_actions_len)
{
const struct nlattr *ca;
unsigned int cleft;
NL_ATTR_FOR_EACH_UNSAFE (ca, cleft, clone_actions, clone_actions_len) {
int clone_type = nl_attr_type(ca);
if (clone_type == OVS_ACTION_ATTR_TUNNEL_PUSH) {
const struct ovs_action_push_tnl *tnl_push = nl_attr_get(ca);
add_tunnel_push_action(actions, tnl_push);
} else if (clone_type == OVS_ACTION_ATTR_OUTPUT) {
if (add_output_action(netdev, actions, ca)) {
return -1;
}
} else {
VLOG_DBG_RL(&rl,
"Unsupported nested action inside clone(), "
"action type: %d", clone_type);
return -1;
}
}
return 0;
}
static void
add_jump_action(struct flow_actions *actions, uint32_t group)
{
struct rte_flow_action_jump *jump = xzalloc (sizeof *jump);
jump->group = group;
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_JUMP, jump);
}
static int OVS_UNUSED
add_tnl_pop_action(struct netdev *netdev,
struct flow_actions *actions,
const struct nlattr *nla)
{
struct rte_flow_action *tnl_pmd_actions = NULL;
uint32_t tnl_pmd_actions_cnt = 0;
struct rte_flow_tunnel tunnel;
struct rte_flow_error error;
struct netdev *vport;
odp_port_t port;
int ret;
port = nl_attr_get_odp_port(nla);
vport = netdev_ports_get(port, netdev->dpif_type);
if (vport == NULL) {
return -1;
}
ret = vport_to_rte_tunnel(vport, &tunnel, netdev, &actions->s_tnl);
netdev_close(vport);
if (ret) {
return ret;
}
ret = netdev_dpdk_rte_flow_tunnel_decap_set(netdev, &tunnel,
&tnl_pmd_actions,
&tnl_pmd_actions_cnt,
&error);
if (ret) {
VLOG_DBG_RL(&rl, "%s: netdev_dpdk_rte_flow_tunnel_decap_set failed: "
"%d (%s).", netdev_get_name(netdev), error.type,
error.message);
return ret;
}
add_flow_tnl_actions(actions, netdev, tnl_pmd_actions,
tnl_pmd_actions_cnt);
/* After decap_set, the packet processing should continue. In SW, it is
* done by recirculation (recirc_id = 0). In rte_flow, the group is
* equivalent to recirc_id, thus jump to group 0 is added to instruct the
* the HW to proceed processing.
*/
add_jump_action(actions, 0);
return 0;
}
static int
parse_flow_actions(struct netdev *netdev,
struct flow_actions *actions,
struct nlattr *nl_actions,
size_t nl_actions_len)
{
struct nlattr *nla;
size_t left;
add_count_action(actions);
NL_ATTR_FOR_EACH_UNSAFE (nla, left, nl_actions, nl_actions_len) {
if (nl_attr_type(nla) == OVS_ACTION_ATTR_OUTPUT) {
if (add_output_action(netdev, actions, nla)) {
return -1;
}
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_DROP) {
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_DROP, NULL);
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_SET ||
nl_attr_type(nla) == OVS_ACTION_ATTR_SET_MASKED) {
const struct nlattr *set_actions = nl_attr_get(nla);
const size_t set_actions_len = nl_attr_get_size(nla);
bool masked = nl_attr_type(nla) == OVS_ACTION_ATTR_SET_MASKED;
if (parse_set_actions(actions, set_actions, set_actions_len,
masked)) {
return -1;
}
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_PUSH_VLAN) {
const struct ovs_action_push_vlan *vlan = nl_attr_get(nla);
if (parse_vlan_push_action(actions, vlan)) {
return -1;
}
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_POP_VLAN) {
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_OF_POP_VLAN, NULL);
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_TUNNEL_PUSH) {
const struct ovs_action_push_tnl *tnl_push = nl_attr_get(nla);
add_tunnel_push_action(actions, tnl_push);
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_CLONE &&
left <= NLA_ALIGN(nla->nla_len)) {
const struct nlattr *clone_actions = nl_attr_get(nla);
size_t clone_actions_len = nl_attr_get_size(nla);
if (parse_clone_actions(netdev, actions, clone_actions,
clone_actions_len)) {
return -1;
}
#ifdef ALLOW_EXPERIMENTAL_API /* Packet restoration API required. */
} else if (nl_attr_type(nla) == OVS_ACTION_ATTR_TUNNEL_POP) {
if (add_tnl_pop_action(netdev, actions, nla)) {
return -1;
}
#endif
} else {
VLOG_DBG_RL(&rl, "Unsupported action type %d", nl_attr_type(nla));
return -1;
}
}
if (nl_actions_len == 0) {
VLOG_DBG_RL(&rl, "No actions provided");
return -1;
}
add_flow_action(actions, RTE_FLOW_ACTION_TYPE_END, NULL);
return 0;
}
static struct rte_flow *
netdev_offload_dpdk_actions(struct netdev *netdev,
struct flow_patterns *patterns,
struct nlattr *nl_actions,
size_t actions_len)
{
const struct rte_flow_attr flow_attr = { .transfer = 1, };
struct flow_actions actions = {
.actions = NULL,
.cnt = 0,
.s_tnl = DS_EMPTY_INITIALIZER,
};
struct rte_flow *flow = NULL;
struct rte_flow_error error;
int ret;
ret = parse_flow_actions(netdev, &actions, nl_actions, actions_len);
if (ret) {
goto out;
}
flow = netdev_offload_dpdk_flow_create(netdev, &flow_attr, patterns,
&actions, &error);
out:
free_flow_actions(&actions);
return flow;
}
static struct ufid_to_rte_flow_data *
netdev_offload_dpdk_add_flow(struct netdev *netdev,
struct match *match,
struct nlattr *nl_actions,
size_t actions_len,
const ovs_u128 *ufid,
struct offload_info *info)
{
struct flow_patterns patterns = {
.items = NULL,
.cnt = 0,
.s_tnl = DS_EMPTY_INITIALIZER,
};
struct ufid_to_rte_flow_data *flows_data = NULL;
bool actions_offloaded = true;
struct rte_flow *flow;
if (parse_flow_match(netdev, info->orig_in_port, &patterns, match)) {
VLOG_DBG_RL(&rl, "%s: matches of ufid "UUID_FMT" are not supported",
netdev_get_name(netdev), UUID_ARGS((struct uuid *) ufid));
goto out;
}
flow = netdev_offload_dpdk_actions(patterns.physdev, &patterns, nl_actions,
actions_len);
if (!flow && !netdev_vport_is_vport_class(netdev->netdev_class)) {
/* If we failed to offload the rule actions fallback to MARK+RSS
* actions.
*/
flow = netdev_offload_dpdk_mark_rss(&patterns, netdev,
info->flow_mark);
actions_offloaded = false;
}
if (!flow) {
goto out;
}
flows_data = ufid_to_rte_flow_associate(ufid, netdev, patterns.physdev,
flow, actions_offloaded);
VLOG_DBG("%s/%s: installed flow %p by ufid "UUID_FMT,
netdev_get_name(netdev), netdev_get_name(patterns.physdev), flow,
UUID_ARGS((struct uuid *) ufid));
out:
free_flow_patterns(&patterns);
return flows_data;
}
static int
netdev_offload_dpdk_flow_destroy(struct ufid_to_rte_flow_data *rte_flow_data)
{
struct rte_flow_error error;
struct rte_flow *rte_flow;
struct netdev *physdev;
struct netdev *netdev;
ovs_u128 *ufid;
int ret;
ovs_mutex_lock(&rte_flow_data->lock);
if (rte_flow_data->dead) {
ovs_mutex_unlock(&rte_flow_data->lock);
return 0;
}
rte_flow_data->dead = true;
rte_flow = rte_flow_data->rte_flow;
physdev = rte_flow_data->physdev;
netdev = rte_flow_data->netdev;
ufid = &rte_flow_data->ufid;
ret = netdev_dpdk_rte_flow_destroy(physdev, rte_flow, &error);
if (ret == 0) {
struct netdev_offload_dpdk_data *data;
unsigned int tid = netdev_offload_thread_id();
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
data->rte_flow_counters[tid]--;
VLOG_DBG_RL(&rl, "%s/%s: rte_flow 0x%"PRIxPTR
" flow destroy %d ufid " UUID_FMT,
netdev_get_name(netdev), netdev_get_name(physdev),
(intptr_t) rte_flow,
netdev_dpdk_get_port_id(physdev),
UUID_ARGS((struct uuid *) ufid));
ufid_to_rte_flow_disassociate(rte_flow_data);
} else {
VLOG_ERR("Failed flow: %s/%s: flow destroy %d ufid " UUID_FMT,
netdev_get_name(netdev), netdev_get_name(physdev),
netdev_dpdk_get_port_id(physdev),
UUID_ARGS((struct uuid *) ufid));
}
ovs_mutex_unlock(&rte_flow_data->lock);
return ret;
}
struct get_netdev_odp_aux {
struct netdev *netdev;
odp_port_t odp_port;
};
static bool
get_netdev_odp_cb(struct netdev *netdev,
odp_port_t odp_port,
void *aux_)
{
struct get_netdev_odp_aux *aux = aux_;
if (netdev == aux->netdev) {
aux->odp_port = odp_port;
return true;
}
return false;
}
static int
netdev_offload_dpdk_flow_put(struct netdev *netdev, struct match *match,
struct nlattr *actions, size_t actions_len,
const ovs_u128 *ufid, struct offload_info *info,
struct dpif_flow_stats *stats)
{
struct ufid_to_rte_flow_data *rte_flow_data;
struct dpif_flow_stats old_stats;
bool modification = false;
int ret;
/*
* If an old rte_flow exists, it means it's a flow modification.
* Here destroy the old rte flow first before adding a new one.
* Keep the stats for the newly created rule.
*/
rte_flow_data = ufid_to_rte_flow_data_find(netdev, ufid, false);
if (rte_flow_data && rte_flow_data->rte_flow) {
struct get_netdev_odp_aux aux = {
.netdev = rte_flow_data->physdev,
.odp_port = ODPP_NONE,
};
/* Extract the orig_in_port from physdev as in case of modify the one
* provided by upper layer cannot be used.
*/
netdev_ports_traverse(rte_flow_data->physdev->dpif_type,
get_netdev_odp_cb, &aux);
info->orig_in_port = aux.odp_port;
old_stats = rte_flow_data->stats;
modification = true;
ret = netdev_offload_dpdk_flow_destroy(rte_flow_data);
if (ret < 0) {
return ret;
}
}
rte_flow_data = netdev_offload_dpdk_add_flow(netdev, match, actions,
actions_len, ufid, info);
if (!rte_flow_data) {
return -1;
}
if (modification) {
rte_flow_data->stats = old_stats;
}
if (stats) {
*stats = rte_flow_data->stats;
}
return 0;
}
static int
netdev_offload_dpdk_flow_del(struct netdev *netdev OVS_UNUSED,
const ovs_u128 *ufid,
struct dpif_flow_stats *stats)
{
struct ufid_to_rte_flow_data *rte_flow_data;
rte_flow_data = ufid_to_rte_flow_data_find(netdev, ufid, true);
if (!rte_flow_data || !rte_flow_data->rte_flow) {
return -1;
}
if (stats) {
memset(stats, 0, sizeof *stats);
}
return netdev_offload_dpdk_flow_destroy(rte_flow_data);
}
static int
netdev_offload_dpdk_init_flow_api(struct netdev *netdev)
{
int ret = EOPNOTSUPP;
if (netdev_vport_is_vport_class(netdev->netdev_class)
&& !strcmp(netdev_get_dpif_type(netdev), "system")) {
VLOG_DBG("%s: vport belongs to the system datapath. Skipping.",
netdev_get_name(netdev));
return EOPNOTSUPP;
}
if (netdev_dpdk_flow_api_supported(netdev)) {
ret = offload_data_init(netdev);
}
return ret;
}
static void
netdev_offload_dpdk_uninit_flow_api(struct netdev *netdev)
{
if (netdev_dpdk_flow_api_supported(netdev)) {
offload_data_destroy(netdev);
}
}
static int
netdev_offload_dpdk_flow_get(struct netdev *netdev,
struct match *match OVS_UNUSED,
struct nlattr **actions OVS_UNUSED,
const ovs_u128 *ufid,
struct dpif_flow_stats *stats,
struct dpif_flow_attrs *attrs,
struct ofpbuf *buf OVS_UNUSED)
{
struct rte_flow_query_count query = { .reset = 1 };
struct ufid_to_rte_flow_data *rte_flow_data;
struct rte_flow_error error;
int ret = 0;
attrs->dp_extra_info = NULL;
rte_flow_data = ufid_to_rte_flow_data_find(netdev, ufid, false);
if (!rte_flow_data || !rte_flow_data->rte_flow ||
rte_flow_data->dead || ovs_mutex_trylock(&rte_flow_data->lock)) {
return -1;
}
/* Check again whether the data is dead, as it could have been
* updated while the lock was not yet taken. The first check above
* was only to avoid unnecessary locking if possible.
*/
if (rte_flow_data->dead) {
ret = -1;
goto out;
}
attrs->offloaded = true;
if (!rte_flow_data->actions_offloaded) {
attrs->dp_layer = "ovs";
memset(stats, 0, sizeof *stats);
goto out;
}
attrs->dp_layer = "dpdk";
ret = netdev_dpdk_rte_flow_query_count(rte_flow_data->physdev,
rte_flow_data->rte_flow, &query,
&error);
if (ret) {
VLOG_DBG_RL(&rl, "%s: Failed to query ufid "UUID_FMT" flow: %p",
netdev_get_name(netdev), UUID_ARGS((struct uuid *) ufid),
rte_flow_data->rte_flow);
goto out;
}
rte_flow_data->stats.n_packets += (query.hits_set) ? query.hits : 0;
rte_flow_data->stats.n_bytes += (query.bytes_set) ? query.bytes : 0;
if (query.hits_set && query.hits) {
rte_flow_data->stats.used = time_msec();
}
memcpy(stats, &rte_flow_data->stats, sizeof *stats);
out:
ovs_mutex_unlock(&rte_flow_data->lock);
return ret;
}
static int
netdev_offload_dpdk_flow_flush(struct netdev *netdev)
{
struct cmap *map = offload_data_map(netdev);
struct ufid_to_rte_flow_data *data;
unsigned int tid = netdev_offload_thread_id();
if (!map) {
return -1;
}
CMAP_FOR_EACH (data, node, map) {
if (data->netdev != netdev && data->physdev != netdev) {
continue;
}
if (data->creation_tid == tid) {
netdev_offload_dpdk_flow_destroy(data);
}
}
return 0;
}
struct get_vport_netdev_aux {
struct rte_flow_tunnel *tunnel;
odp_port_t *odp_port;
struct netdev *vport;
const char *type;
};
static bool
get_vport_netdev_cb(struct netdev *netdev,
odp_port_t odp_port,
void *aux_)
{
const struct netdev_tunnel_config *tnl_cfg;
struct get_vport_netdev_aux *aux = aux_;
if (!aux->type || strcmp(netdev_get_type(netdev), aux->type)) {
return false;
}
if (!strcmp(netdev_get_type(netdev), "gre")) {
goto out;
}
tnl_cfg = netdev_get_tunnel_config(netdev);
if (!tnl_cfg) {
VLOG_ERR_RL(&rl, "Cannot get a tunnel config for netdev %s",
netdev_get_name(netdev));
return false;
}
if (tnl_cfg->dst_port != aux->tunnel->tp_dst) {
return false;
}
out:
/* Found the netdev. Store the results and stop the traversing. */
aux->vport = netdev_ref(netdev);
*aux->odp_port = odp_port;
return true;
}
static struct netdev *
get_vport_netdev(const char *dpif_type,
struct rte_flow_tunnel *tunnel,
odp_port_t *odp_port)
{
struct get_vport_netdev_aux aux = {
.tunnel = tunnel,
.odp_port = odp_port,
.vport = NULL,
.type = NULL,
};
if (tunnel->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
aux.type = "vxlan";
} else if (tunnel->type == RTE_FLOW_ITEM_TYPE_GRE) {
aux.type = "gre";
}
netdev_ports_traverse(dpif_type, get_vport_netdev_cb, &aux);
return aux.vport;
}
static int
netdev_offload_dpdk_hw_miss_packet_recover(struct netdev *netdev,
struct dp_packet *packet)
{
struct rte_flow_restore_info rte_restore_info;
struct rte_flow_tunnel *rte_tnl;
struct netdev *vport_netdev;
struct pkt_metadata *md;
struct flow_tnl *md_tnl;
odp_port_t vport_odp;
int ret = 0;
ret = netdev_dpdk_rte_flow_get_restore_info(netdev, packet,
&rte_restore_info, NULL);
if (ret) {
if (ret == -EOPNOTSUPP) {
return -ret;
}
/* This function is called for every packet, and in most cases there
* will be no restore info from the HW, thus error is expected.
*/
return 0;
}
if (!(rte_restore_info.flags & RTE_FLOW_RESTORE_INFO_TUNNEL)) {
return EOPNOTSUPP;
}
rte_tnl = &rte_restore_info.tunnel;
vport_netdev = get_vport_netdev(netdev->dpif_type, rte_tnl,
&vport_odp);
if (!vport_netdev) {
VLOG_WARN_RL(&rl, "Could not find vport netdev");
return EOPNOTSUPP;
}
md = &packet->md;
/* For tunnel recovery (RTE_FLOW_RESTORE_INFO_TUNNEL), it is possible
* to have the packet to still be encapsulated, or not. This is reflected
* by the RTE_FLOW_RESTORE_INFO_ENCAPSULATED flag.
* In the case it is on, the packet is still encapsulated, and we do
* the pop in SW.
* In the case it is off, the packet is already decapsulated by HW, and
* the tunnel info is provided in the tunnel struct. For this case we
* take it to OVS metadata.
*/
if (rte_restore_info.flags & RTE_FLOW_RESTORE_INFO_ENCAPSULATED) {
if (!vport_netdev->netdev_class ||
!vport_netdev->netdev_class->pop_header) {
VLOG_ERR_RL(&rl, "vport nedtdev=%s with no pop_header method",
netdev_get_name(vport_netdev));
ret = EOPNOTSUPP;
goto close_vport_netdev;
}
parse_tcp_flags(packet, NULL, NULL, NULL);
if (vport_netdev->netdev_class->pop_header(packet) == NULL) {
/* If there is an error with popping the header, the packet is
* freed. In this case it should not continue SW processing.
*/
ret = EINVAL;
goto close_vport_netdev;
}
} else {
md_tnl = &md->tunnel;
if (rte_tnl->is_ipv6) {
memcpy(&md_tnl->ipv6_src, &rte_tnl->ipv6.src_addr,
sizeof md_tnl->ipv6_src);
memcpy(&md_tnl->ipv6_dst, &rte_tnl->ipv6.dst_addr,
sizeof md_tnl->ipv6_dst);
} else {
md_tnl->ip_src = rte_tnl->ipv4.src_addr;
md_tnl->ip_dst = rte_tnl->ipv4.dst_addr;
}
md_tnl->tun_id = htonll(rte_tnl->tun_id);
md_tnl->flags = rte_tnl->tun_flags;
md_tnl->ip_tos = rte_tnl->tos;
md_tnl->ip_ttl = rte_tnl->ttl;
md_tnl->tp_src = rte_tnl->tp_src;
}
/* Change the in_port to the vport's one, in order to continue packet
* processing in SW.
*/
md->in_port.odp_port = vport_odp;
dp_packet_reset_offload(packet);
close_vport_netdev:
netdev_close(vport_netdev);
return ret;
}
static int
netdev_offload_dpdk_get_n_flows(struct netdev *netdev,
uint64_t *n_flows)
{
struct netdev_offload_dpdk_data *data;
unsigned int tid;
data = (struct netdev_offload_dpdk_data *)
ovsrcu_get(void *, &netdev->hw_info.offload_data);
if (!data) {
return -1;
}
for (tid = 0; tid < netdev_offload_thread_nb(); tid++) {
n_flows[tid] = data->rte_flow_counters[tid];
}
return 0;
}
const struct netdev_flow_api netdev_offload_dpdk = {
.type = "dpdk_flow_api",
.flow_put = netdev_offload_dpdk_flow_put,
.flow_del = netdev_offload_dpdk_flow_del,
.init_flow_api = netdev_offload_dpdk_init_flow_api,
.uninit_flow_api = netdev_offload_dpdk_uninit_flow_api,
.flow_get = netdev_offload_dpdk_flow_get,
.flow_flush = netdev_offload_dpdk_flow_flush,
.hw_miss_packet_recover = netdev_offload_dpdk_hw_miss_packet_recover,
.flow_get_n_flows = netdev_offload_dpdk_get_n_flows,
};
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