[ovs-dev] [PATCH ovs V4 01/24] tc: Add tc flower interface
Roi Dayan
roid at mellanox.com
Mon Mar 13 13:36:51 UTC 2017
From: Paul Blakey <paulb at mellanox.com>
Add tc flower interface that will be used to offload flows via tc
flower classifier. Depending on the flag used (skip_sw/hw) flower
will pass those to HW or handle them itself.
Move some tc related functions from netdev-linux.c to tc.c
Co-authored-by: Shahar Klein <shahark at mellanox.com>
Signed-off-by: Shahar Klein <shahark at mellanox.com>
Signed-off-by: Paul Blakey <paulb at mellanox.com>
Reviewed-by: Roi Dayan <roid at mellanox.com>
---
lib/automake.mk | 2 +
lib/netdev-linux.c | 164 ++-------
lib/tc.c | 1042 ++++++++++++++++++++++++++++++++++++++++++++++++++++
lib/tc.h | 119 ++++++
4 files changed, 1203 insertions(+), 124 deletions(-)
create mode 100644 lib/tc.c
create mode 100644 lib/tc.h
diff --git a/lib/automake.mk b/lib/automake.mk
index abc9d0d..a6141ea 100644
--- a/lib/automake.mk
+++ b/lib/automake.mk
@@ -351,6 +351,8 @@ if LINUX
lib_libopenvswitch_la_SOURCES += \
lib/dpif-netlink.c \
lib/dpif-netlink.h \
+ lib/tc.h \
+ lib/tc.c \
lib/if-notifier.c \
lib/if-notifier.h \
lib/netdev-linux.c \
diff --git a/lib/netdev-linux.c b/lib/netdev-linux.c
index 9ff1333..085f530 100644
--- a/lib/netdev-linux.c
+++ b/lib/netdev-linux.c
@@ -29,8 +29,6 @@
#include <linux/types.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
-#include <linux/pkt_cls.h>
-#include <linux/pkt_sched.h>
#include <linux/rtnetlink.h>
#include <linux/sockios.h>
#include <sys/types.h>
@@ -74,6 +72,7 @@
#include "unaligned.h"
#include "openvswitch/vlog.h"
#include "util.h"
+#include "tc.h"
VLOG_DEFINE_THIS_MODULE(netdev_linux);
@@ -434,18 +433,14 @@ static const struct tc_ops *const tcs[] = {
NULL
};
-static unsigned int tc_make_handle(unsigned int major, unsigned int minor);
-static unsigned int tc_get_major(unsigned int handle);
-static unsigned int tc_get_minor(unsigned int handle);
-
static unsigned int tc_ticks_to_bytes(unsigned int rate, unsigned int ticks);
static unsigned int tc_bytes_to_ticks(unsigned int rate, unsigned int size);
static unsigned int tc_buffer_per_jiffy(unsigned int rate);
+static struct tcmsg *netdev_linux_tc_make_request(const struct netdev *,
+ int type,
+ unsigned int flags,
+ struct ofpbuf *);
-static struct tcmsg *tc_make_request(const struct netdev *, int type,
- unsigned int flags, struct ofpbuf *);
-static int tc_transact(struct ofpbuf *request, struct ofpbuf **replyp);
-static int tc_add_del_ingress_qdisc(struct netdev *netdev, bool add);
static int tc_add_policer(struct netdev *,
uint32_t kbits_rate, uint32_t kbits_burst);
@@ -2055,12 +2050,18 @@ netdev_linux_set_policing(struct netdev *netdev_,
struct netdev_linux *netdev = netdev_linux_cast(netdev_);
const char *netdev_name = netdev_get_name(netdev_);
int error;
+ int ifindex;
kbits_burst = (!kbits_rate ? 0 /* Force to 0 if no rate specified. */
: !kbits_burst ? 8000 /* Default to 8000 kbits if 0. */
: kbits_burst); /* Stick with user-specified value. */
ovs_mutex_lock(&netdev->mutex);
+ error = get_ifindex(netdev_, &ifindex);
+ if (error) {
+ goto out;
+ }
+
if (netdev->cache_valid & VALID_POLICING) {
error = netdev->netdev_policing_error;
if (error || (netdev->kbits_rate == kbits_rate &&
@@ -2073,7 +2074,7 @@ netdev_linux_set_policing(struct netdev *netdev_,
COVERAGE_INC(netdev_set_policing);
/* Remove any existing ingress qdisc. */
- error = tc_add_del_ingress_qdisc(netdev_, false);
+ error = tc_add_del_ingress_qdisc(ifindex, false);
if (error) {
VLOG_WARN_RL(&rl, "%s: removing policing failed: %s",
netdev_name, ovs_strerror(error));
@@ -2081,7 +2082,7 @@ netdev_linux_set_policing(struct netdev *netdev_,
}
if (kbits_rate) {
- error = tc_add_del_ingress_qdisc(netdev_, true);
+ error = tc_add_del_ingress_qdisc(ifindex, true);
if (error) {
VLOG_WARN_RL(&rl, "%s: adding policing qdisc failed: %s",
netdev_name, ovs_strerror(error));
@@ -2350,7 +2351,7 @@ start_queue_dump(const struct netdev *netdev, struct queue_dump_state *state)
struct ofpbuf request;
struct tcmsg *tcmsg;
- tcmsg = tc_make_request(netdev, RTM_GETTCLASS, 0, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_GETTCLASS, 0, &request);
if (!tcmsg) {
return false;
}
@@ -2909,8 +2910,8 @@ codel_setup_qdisc__(struct netdev *netdev, uint32_t target, uint32_t limit,
tc_del_qdisc(netdev);
- tcmsg = tc_make_request(netdev, RTM_NEWQDISC,
- NLM_F_EXCL | NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWQDISC,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -3127,8 +3128,8 @@ fqcodel_setup_qdisc__(struct netdev *netdev, uint32_t target, uint32_t limit,
tc_del_qdisc(netdev);
- tcmsg = tc_make_request(netdev, RTM_NEWQDISC,
- NLM_F_EXCL | NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWQDISC,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -3351,8 +3352,8 @@ sfq_setup_qdisc__(struct netdev *netdev, uint32_t quantum, uint32_t perturb)
tc_del_qdisc(netdev);
- tcmsg = tc_make_request(netdev, RTM_NEWQDISC,
- NLM_F_EXCL | NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWQDISC,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -3538,8 +3539,8 @@ htb_setup_qdisc__(struct netdev *netdev)
tc_del_qdisc(netdev);
- tcmsg = tc_make_request(netdev, RTM_NEWQDISC,
- NLM_F_EXCL | NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWQDISC,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -3592,7 +3593,8 @@ htb_setup_class__(struct netdev *netdev, unsigned int handle,
opt.cbuffer = tc_calc_buffer(opt.ceil.rate, mtu, class->burst);
opt.prio = class->priority;
- tcmsg = tc_make_request(netdev, RTM_NEWTCLASS, NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWTCLASS,
+ NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -4201,13 +4203,11 @@ hfsc_setup_qdisc__(struct netdev * netdev)
tc_del_qdisc(netdev);
- tcmsg = tc_make_request(netdev, RTM_NEWQDISC,
- NLM_F_EXCL | NLM_F_CREATE, &request);
-
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWQDISC,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
-
tcmsg->tcm_handle = tc_make_handle(1, 0);
tcmsg->tcm_parent = TC_H_ROOT;
@@ -4234,12 +4234,11 @@ hfsc_setup_class__(struct netdev *netdev, unsigned int handle,
struct ofpbuf request;
struct tc_service_curve min, max;
- tcmsg = tc_make_request(netdev, RTM_NEWTCLASS, NLM_F_CREATE, &request);
-
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWTCLASS,
+ NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
-
tcmsg->tcm_handle = handle;
tcmsg->tcm_parent = parent;
@@ -4610,102 +4609,17 @@ static double ticks_per_s;
*/
static unsigned int buffer_hz;
-/* Returns tc handle 'major':'minor'. */
-static unsigned int
-tc_make_handle(unsigned int major, unsigned int minor)
-{
- return TC_H_MAKE(major << 16, minor);
-}
-
-/* Returns the major number from 'handle'. */
-static unsigned int
-tc_get_major(unsigned int handle)
-{
- return TC_H_MAJ(handle) >> 16;
-}
-
-/* Returns the minor number from 'handle'. */
-static unsigned int
-tc_get_minor(unsigned int handle)
-{
- return TC_H_MIN(handle);
-}
-
static struct tcmsg *
-tc_make_request(const struct netdev *netdev, int type, unsigned int flags,
- struct ofpbuf *request)
+netdev_linux_tc_make_request(const struct netdev *netdev, int type,
+ unsigned int flags, struct ofpbuf *request)
{
- struct tcmsg *tcmsg;
int ifindex;
- int error;
- error = get_ifindex(netdev, &ifindex);
- if (error) {
+ if (get_ifindex(netdev, &ifindex)) {
return NULL;
}
- ofpbuf_init(request, 512);
- nl_msg_put_nlmsghdr(request, sizeof *tcmsg, type, NLM_F_REQUEST | flags);
- tcmsg = ofpbuf_put_zeros(request, sizeof *tcmsg);
- tcmsg->tcm_family = AF_UNSPEC;
- tcmsg->tcm_ifindex = ifindex;
- /* Caller should fill in tcmsg->tcm_handle. */
- /* Caller should fill in tcmsg->tcm_parent. */
-
- return tcmsg;
-}
-
-static int
-tc_transact(struct ofpbuf *request, struct ofpbuf **replyp)
-{
- int error = nl_transact(NETLINK_ROUTE, request, replyp);
- ofpbuf_uninit(request);
- return error;
-}
-
-/* Adds or deletes a root ingress qdisc on 'netdev'. We use this for
- * policing configuration.
- *
- * This function is equivalent to running the following when 'add' is true:
- * /sbin/tc qdisc add dev <devname> handle ffff: ingress
- *
- * This function is equivalent to running the following when 'add' is false:
- * /sbin/tc qdisc del dev <devname> handle ffff: ingress
- *
- * The configuration and stats may be seen with the following command:
- * /sbin/tc -s qdisc show dev <devname>
- *
- * Returns 0 if successful, otherwise a positive errno value.
- */
-static int
-tc_add_del_ingress_qdisc(struct netdev *netdev, bool add)
-{
- struct ofpbuf request;
- struct tcmsg *tcmsg;
- int error;
- int type = add ? RTM_NEWQDISC : RTM_DELQDISC;
- int flags = add ? NLM_F_EXCL | NLM_F_CREATE : 0;
-
- tcmsg = tc_make_request(netdev, type, flags, &request);
- if (!tcmsg) {
- return ENODEV;
- }
- tcmsg->tcm_handle = tc_make_handle(0xffff, 0);
- tcmsg->tcm_parent = TC_H_INGRESS;
- nl_msg_put_string(&request, TCA_KIND, "ingress");
- nl_msg_put_unspec(&request, TCA_OPTIONS, NULL, 0);
-
- error = tc_transact(&request, NULL);
- if (error) {
- /* If we're deleting the qdisc, don't worry about some of the
- * error conditions. */
- if (!add && (error == ENOENT || error == EINVAL)) {
- return 0;
- }
- return error;
- }
-
- return 0;
+ return tc_make_request(ifindex, type, flags, request);
}
/* Adds a policer to 'netdev' with a rate of 'kbits_rate' and a burst size
@@ -4748,8 +4662,8 @@ tc_add_policer(struct netdev *netdev,
tc_police.burst = tc_bytes_to_ticks(
tc_police.rate.rate, MIN(UINT32_MAX / 1024, kbits_burst) * 1024 / 8);
- tcmsg = tc_make_request(netdev, RTM_NEWTFILTER,
- NLM_F_EXCL | NLM_F_CREATE, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_NEWTFILTER,
+ NLM_F_EXCL | NLM_F_CREATE, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -5014,7 +4928,8 @@ tc_query_class(const struct netdev *netdev,
struct tcmsg *tcmsg;
int error;
- tcmsg = tc_make_request(netdev, RTM_GETTCLASS, NLM_F_ECHO, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_GETTCLASS,
+ NLM_F_ECHO, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -5040,7 +4955,7 @@ tc_delete_class(const struct netdev *netdev, unsigned int handle)
struct tcmsg *tcmsg;
int error;
- tcmsg = tc_make_request(netdev, RTM_DELTCLASS, 0, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev, RTM_DELTCLASS, 0, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -5066,7 +4981,7 @@ tc_del_qdisc(struct netdev *netdev_)
struct tcmsg *tcmsg;
int error;
- tcmsg = tc_make_request(netdev_, RTM_DELQDISC, 0, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev_, RTM_DELQDISC, 0, &request);
if (!tcmsg) {
return ENODEV;
}
@@ -5147,7 +5062,8 @@ tc_query_qdisc(const struct netdev *netdev_)
* in such a case we get no response at all from the kernel (!) if a
* builtin qdisc is in use (which is later caught by "!error &&
* !qdisc->size"). */
- tcmsg = tc_make_request(netdev_, RTM_GETQDISC, NLM_F_ECHO, &request);
+ tcmsg = netdev_linux_tc_make_request(netdev_, RTM_GETQDISC,
+ NLM_F_ECHO, &request);
if (!tcmsg) {
return ENODEV;
}
diff --git a/lib/tc.c b/lib/tc.c
new file mode 100644
index 0000000..0c9c15e
--- /dev/null
+++ b/lib/tc.c
@@ -0,0 +1,1042 @@
+/*
+ * Copyright (c) 2016 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 <errno.h>
+#include <linux/rtnetlink.h>
+#include <net/if.h>
+#include <linux/tc_act/tc_gact.h>
+#include <linux/tc_act/tc_mirred.h>
+#include <linux/tc_act/tc_vlan.h>
+#include <linux/tc_act/tc_tunnel_key.h>
+#include <linux/gen_stats.h>
+#include "timeval.h"
+#include "netlink-socket.h"
+#include "netlink.h"
+#include "rtnetlink.h"
+#include "openvswitch/vlog.h"
+#include "openvswitch/ofpbuf.h"
+#include "tc.h"
+#include "util.h"
+#include "byte-order.h"
+
+VLOG_DEFINE_THIS_MODULE(tc);
+
+static struct vlog_rate_limit parse_err = VLOG_RATE_LIMIT_INIT(5, 5);
+
+/* Returns tc handle 'major':'minor'. */
+unsigned int
+tc_make_handle(unsigned int major, unsigned int minor)
+{
+ return TC_H_MAKE(major << 16, minor);
+}
+
+/* Returns the major number from 'handle'. */
+unsigned int
+tc_get_major(unsigned int handle)
+{
+ return TC_H_MAJ(handle) >> 16;
+}
+
+/* Returns the minor number from 'handle'. */
+unsigned int
+tc_get_minor(unsigned int handle)
+{
+ return TC_H_MIN(handle);
+}
+
+struct tcmsg *
+tc_make_request(int ifindex, int type, unsigned int flags,
+ struct ofpbuf *request)
+{
+ struct tcmsg *tcmsg;
+
+ ofpbuf_init(request, 512);
+ nl_msg_put_nlmsghdr(request, sizeof *tcmsg, type, NLM_F_REQUEST | flags);
+ tcmsg = ofpbuf_put_zeros(request, sizeof *tcmsg);
+ tcmsg->tcm_family = AF_UNSPEC;
+ tcmsg->tcm_ifindex = ifindex;
+ /* Caller should fill in tcmsg->tcm_handle. */
+ /* Caller should fill in tcmsg->tcm_parent. */
+
+ return tcmsg;
+}
+
+int
+tc_transact(struct ofpbuf *request, struct ofpbuf **replyp)
+{
+ int error = nl_transact(NETLINK_ROUTE, request, replyp);
+ ofpbuf_uninit(request);
+ return error;
+}
+
+/* Adds or deletes a root ingress qdisc on device with specified ifindex.
+ *
+ * This function is equivalent to running the following when 'add' is true:
+ * /sbin/tc qdisc add dev <devname> handle ffff: ingress
+ *
+ * This function is equivalent to running the following when 'add' is false:
+ * /sbin/tc qdisc del dev <devname> handle ffff: ingress
+ *
+ * Where dev <devname> is the device with specified ifindex name.
+ *
+ * The configuration and stats may be seen with the following command:
+ * /sbin/tc -s qdisc show dev <devname>
+ *
+ *
+ * Returns 0 if successful, otherwise a positive errno value.
+ */
+int
+tc_add_del_ingress_qdisc(int ifindex, bool add)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+ int error;
+ int type = add ? RTM_NEWQDISC : RTM_DELQDISC;
+ int flags = add ? NLM_F_EXCL | NLM_F_CREATE : 0;
+
+ tcmsg = tc_make_request(ifindex, type, flags, &request);
+ tcmsg->tcm_handle = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_parent = TC_H_INGRESS;
+ nl_msg_put_string(&request, TCA_KIND, "ingress");
+ nl_msg_put_unspec(&request, TCA_OPTIONS, NULL, 0);
+
+ error = tc_transact(&request, NULL);
+ if (error) {
+ /* If we're deleting the qdisc, don't worry about some of the
+ * error conditions. */
+ if (!add && (error == ENOENT || error == EINVAL)) {
+ return 0;
+ }
+ return error;
+ }
+
+ return 0;
+}
+
+static const struct nl_policy tca_policy[] = {
+ [TCA_KIND] = { .type = NL_A_STRING, .optional = false, },
+ [TCA_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
+ [TCA_STATS] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tc_stats), .optional = true, },
+ [TCA_STATS2] = { .type = NL_A_NESTED, .optional = true, },
+};
+
+static const struct nl_policy tca_flower_policy[] = {
+ [TCA_FLOWER_CLASSID] = { .type = NL_A_U32, .optional = true, },
+ [TCA_FLOWER_INDEV] = { .type = NL_A_STRING, .max_len = IFNAMSIZ,
+ .optional = true, },
+ [TCA_FLOWER_KEY_ETH_SRC] = { .type = NL_A_UNSPEC,
+ .min_len = ETH_ALEN, .optional = true, },
+ [TCA_FLOWER_KEY_ETH_DST] = { .type = NL_A_UNSPEC,
+ .min_len = ETH_ALEN, .optional = true, },
+ [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .type = NL_A_UNSPEC,
+ .min_len = ETH_ALEN,
+ .optional = true, },
+ [TCA_FLOWER_KEY_ETH_DST_MASK] = { .type = NL_A_UNSPEC,
+ .min_len = ETH_ALEN,
+ .optional = true, },
+ [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NL_A_U16, .optional = false, },
+ [TCA_FLOWER_FLAGS] = { .type = NL_A_U32, .optional = false, },
+ [TCA_FLOWER_ACT] = { .type = NL_A_NESTED, .optional = false, },
+ [TCA_FLOWER_KEY_IP_PROTO] = { .type = NL_A_U8, .optional = true, },
+ [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NL_A_U32, .optional = true, },
+ [TCA_FLOWER_KEY_IPV4_DST] = {.type = NL_A_U32, .optional = true, },
+ [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NL_A_U32, .optional = true, },
+ [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NL_A_U32, .optional = true, },
+ [TCA_FLOWER_KEY_IPV6_SRC] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct in6_addr),
+ .optional = true, },
+ [TCA_FLOWER_KEY_IPV6_DST] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct in6_addr),
+ .optional = true, },
+ [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct in6_addr),
+ .optional = true, },
+ [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct in6_addr),
+ .optional = true, },
+ [TCA_FLOWER_KEY_TCP_SRC] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_TCP_DST] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_UDP_SRC] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_UDP_DST] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NL_A_U8, .optional = true, },
+ [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NL_A_U16, .optional = true, },
+ [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NL_A_BE32, .optional = true, },
+ [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NL_A_BE32, .optional = true, },
+ [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NL_A_BE32, .optional = true, },
+ [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NL_A_BE16,
+ .optional = true, },
+};
+
+static void
+nl_parse_flower_eth(struct nlattr **attrs, struct tc_flower *flower)
+{
+ const struct eth_addr *eth;
+
+ if (attrs[TCA_FLOWER_KEY_ETH_SRC_MASK]) {
+ eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC], ETH_ALEN);
+ memcpy(&flower->key.src_mac, eth, sizeof flower->key.src_mac);
+
+ eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_SRC_MASK], ETH_ALEN);
+ memcpy(&flower->mask.src_mac, eth, sizeof flower->mask.src_mac);
+ }
+ if (attrs[TCA_FLOWER_KEY_ETH_DST_MASK]) {
+ eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST], ETH_ALEN);
+ memcpy(&flower->key.dst_mac, eth, sizeof flower->key.dst_mac);
+
+ eth = nl_attr_get_unspec(attrs[TCA_FLOWER_KEY_ETH_DST_MASK], ETH_ALEN);
+ memcpy(&flower->mask.dst_mac, eth, sizeof flower->mask.dst_mac);
+ }
+}
+
+static void
+nl_parse_flower_vlan(struct nlattr **attrs, struct tc_flower *flower)
+{
+ if (flower->key.eth_type != htons(ETH_P_8021Q)) {
+ return;
+ }
+
+ flower->key.encap_eth_type =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ETH_TYPE]);
+
+ if (attrs[TCA_FLOWER_KEY_VLAN_ID]) {
+ flower->key.vlan_id =
+ nl_attr_get_u16(attrs[TCA_FLOWER_KEY_VLAN_ID]);
+ }
+ if (attrs[TCA_FLOWER_KEY_VLAN_PRIO]) {
+ flower->key.vlan_prio =
+ nl_attr_get_u8(attrs[TCA_FLOWER_KEY_VLAN_PRIO]);
+ }
+}
+
+static void
+nl_parse_flower_tunnel(struct nlattr **attrs, struct tc_flower *flower)
+{
+ if (attrs[TCA_FLOWER_KEY_ENC_KEY_ID]) {
+ ovs_be32 id = nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_KEY_ID]);
+
+ flower->tunnel.id = be32_to_be64(id);
+ }
+ if (attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC]) {
+ flower->tunnel.ipv4_src =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_SRC]);
+ }
+ if (attrs[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
+ flower->tunnel.ipv4_dst =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_ENC_IPV4_DST]);
+ }
+ if (attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]) {
+ flower->tunnel.tp_dst =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_ENC_UDP_DST_PORT]);
+ }
+}
+
+static void
+nl_parse_flower_ip(struct nlattr **attrs, struct tc_flower *flower) {
+ uint8_t ip_proto = 0;
+ const size_t ipv6_size = sizeof flower->mask.ipv6.ipv6_src;
+ struct tc_flower_key *key = &flower->key;
+ struct tc_flower_key *mask = &flower->mask;
+
+ if (attrs[TCA_FLOWER_KEY_IP_PROTO]) {
+ ip_proto = nl_attr_get_u8(attrs[TCA_FLOWER_KEY_IP_PROTO]);
+ key->ip_proto = ip_proto;
+ mask->ip_proto = UINT8_MAX;
+ }
+
+ if (attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]) {
+ key->ipv4.ipv4_src =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC]);
+ mask->ipv4.ipv4_src =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_SRC_MASK]);
+ }
+ if (attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]) {
+ key->ipv4.ipv4_dst =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST]);
+ mask->ipv4.ipv4_dst =
+ nl_attr_get_be32(attrs[TCA_FLOWER_KEY_IPV4_DST_MASK]);
+ }
+ if (attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK]) {
+ struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_SRC];
+ struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_SRC_MASK];
+ const void *data = nl_attr_get_unspec(attr, ipv6_size);
+ const void *mask_data = nl_attr_get_unspec(attr_mask, ipv6_size);
+
+ memcpy(&key->ipv6.ipv6_src, data, ipv6_size);
+ memcpy(&mask->ipv6.ipv6_src, mask_data, ipv6_size);
+ }
+ if (attrs[TCA_FLOWER_KEY_IPV6_DST_MASK]) {
+ struct nlattr *attr = attrs[TCA_FLOWER_KEY_IPV6_DST];
+ struct nlattr *attr_mask = attrs[TCA_FLOWER_KEY_IPV6_DST_MASK];
+ const void *data = nl_attr_get_unspec(attr, ipv6_size);
+ const void *mask_data = nl_attr_get_unspec(attr_mask, ipv6_size);
+
+ memcpy(&key->ipv6.ipv6_dst, data, ipv6_size);
+ memcpy(&mask->ipv6.ipv6_dst, mask_data, ipv6_size);
+ }
+
+ if (ip_proto == IPPROTO_TCP) {
+ if (attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]) {
+ key->src_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC]);
+ mask->src_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_SRC_MASK]);
+ }
+ if (attrs[TCA_FLOWER_KEY_TCP_DST_MASK]) {
+ key->dst_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST]);
+ mask->dst_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_TCP_DST_MASK]);
+ }
+ } else if (ip_proto == IPPROTO_UDP) {
+ if (attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]) {
+ key->src_port = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC]);
+ mask->src_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_SRC_MASK]);
+ }
+ if (attrs[TCA_FLOWER_KEY_UDP_DST_MASK]) {
+ key->dst_port = nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST]);
+ mask->dst_port =
+ nl_attr_get_be16(attrs[TCA_FLOWER_KEY_UDP_DST_MASK]);
+ }
+ }
+}
+
+static const struct nl_policy tunnel_key_policy[] = {
+ [TCA_TUNNEL_KEY_PARMS] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tc_tunnel_key),
+ .optional = false, },
+ [TCA_TUNNEL_KEY_ENC_KEY_ID] = { .type = NL_A_BE32, .optional = true, },
+ [TCA_TUNNEL_KEY_ENC_DST_PORT] = { .type = NL_A_BE16, .optional = true, },
+ [TCA_TUNNEL_KEY_ENC_IPV4_SRC] = { .type = NL_A_BE32, .optional = true, },
+ [TCA_TUNNEL_KEY_ENC_IPV4_DST] = { .type = NL_A_BE32, .optional = true, },
+};
+
+static int
+nl_parse_act_tunnel_key(struct nlattr *options, struct tc_flower *flower)
+{
+ struct nlattr *tun_attrs[ARRAY_SIZE(tunnel_key_policy)];
+ const struct nlattr *tun_parms;
+ const struct tc_tunnel_key *tun;
+
+ if (!nl_parse_nested(options, tunnel_key_policy, tun_attrs,
+ ARRAY_SIZE(tunnel_key_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse tunnel_key action options");
+ return EPROTO;
+ }
+
+ tun_parms = tun_attrs[TCA_TUNNEL_KEY_PARMS];
+ tun = nl_attr_get_unspec(tun_parms, sizeof *tun);
+ if (tun->t_action == TCA_TUNNEL_KEY_ACT_SET) {
+ struct nlattr *id = tun_attrs[TCA_TUNNEL_KEY_ENC_KEY_ID];
+ struct nlattr *dst_port = tun_attrs[TCA_TUNNEL_KEY_ENC_DST_PORT];
+ struct nlattr *ipv4_src = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_SRC];
+ struct nlattr *ipv4_dst = tun_attrs[TCA_TUNNEL_KEY_ENC_IPV4_DST];
+
+ flower->set.set = true;
+ flower->set.ipv4_src = ipv4_src ? nl_attr_get_be32(ipv4_src) : 0;
+ flower->set.ipv4_dst = ipv4_dst ? nl_attr_get_be32(ipv4_dst) : 0;
+ flower->set.id = id ? be32_to_be64(nl_attr_get_be32(id)) : 0;
+ flower->set.tp_dst = dst_port ? nl_attr_get_be16(dst_port) : 0;
+ } else if (tun->t_action == TCA_TUNNEL_KEY_ACT_RELEASE) {
+ flower->tunnel.tunnel = true;
+ } else {
+ VLOG_ERR_RL(&parse_err, "unknown tunnel actions: %d, %d",
+ tun->action, tun->t_action);
+ return EINVAL;
+ }
+ return 0;
+}
+
+static const struct nl_policy gact_policy[] = {
+ [TCA_GACT_PARMS] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tc_gact),
+ .optional = false, },
+ [TCA_GACT_TM] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tcf_t),
+ .optional = false, },
+};
+
+static void
+nl_parse_tcf(const struct tcf_t *tm, struct tc_flower *flower)
+{
+ unsigned long long int lastuse = tm->lastuse * 10;
+ unsigned long long int now = time_msec();
+
+ flower->lastused = now - lastuse;
+}
+
+static int
+nl_parse_act_drop(struct nlattr *options, struct tc_flower *flower)
+{
+ struct nlattr *gact_attrs[ARRAY_SIZE(gact_policy)];
+ const struct tc_gact *p;
+ struct nlattr *gact_parms;
+ const struct tcf_t *tm;
+
+ if (!nl_parse_nested(options, gact_policy, gact_attrs,
+ ARRAY_SIZE(gact_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse gact action options");
+ return EPROTO;
+ }
+
+ gact_parms = gact_attrs[TCA_GACT_PARMS];
+ p = nl_attr_get_unspec(gact_parms, sizeof *p);
+
+ if (p->action == TC_ACT_SHOT) {
+ } else {
+ VLOG_ERR_RL(&parse_err, "unknown gact action: %d", p->action);
+ return EINVAL;
+ }
+
+ tm = nl_attr_get_unspec(gact_attrs[TCA_GACT_TM], sizeof *tm);
+ nl_parse_tcf(tm, flower);
+
+ return 0;
+}
+
+static const struct nl_policy mirred_policy[] = {
+ [TCA_MIRRED_PARMS] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tc_mirred),
+ .optional = false, },
+ [TCA_MIRRED_TM] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tcf_t),
+ .optional = false, },
+};
+
+static int
+nl_parse_act_mirred(struct nlattr *options, struct tc_flower *flower)
+{
+
+ struct nlattr *mirred_attrs[ARRAY_SIZE(mirred_policy)];
+ const struct tc_mirred *m;
+ const struct nlattr *mirred_parms;
+ const struct tcf_t *tm;
+ struct nlattr *mirred_tm;
+
+ if (!nl_parse_nested(options, mirred_policy, mirred_attrs,
+ ARRAY_SIZE(mirred_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse mirred action options");
+ return EPROTO;
+ }
+
+ mirred_parms = mirred_attrs[TCA_MIRRED_PARMS];
+ m = nl_attr_get_unspec(mirred_parms, sizeof *m);
+
+ if (m->action != TC_ACT_STOLEN || m->eaction != TCA_EGRESS_REDIR) {
+ VLOG_ERR_RL(&parse_err, "unknown mirred action: %d, %d, %d",
+ m->action, m->eaction, m->ifindex);
+ return EINVAL;
+ }
+
+ flower->ifindex_out = m->ifindex;
+
+ mirred_tm = mirred_attrs[TCA_MIRRED_TM];
+ tm = nl_attr_get_unspec(mirred_tm, sizeof *tm);
+ nl_parse_tcf(tm, flower);
+
+ return 0;
+}
+
+static const struct nl_policy vlan_policy[] = {
+ [TCA_VLAN_PARMS] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct tc_vlan),
+ .optional = false, },
+ [TCA_VLAN_PUSH_VLAN_ID] = { .type = NL_A_U16, .optional = true, },
+ [TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NL_A_U16, .optional = true, },
+ [TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NL_A_U8, .optional = true, },
+};
+
+static int
+nl_parse_act_vlan(struct nlattr *options, struct tc_flower *flower)
+{
+ struct nlattr *vlan_attrs[ARRAY_SIZE(vlan_policy)];
+ const struct tc_vlan *v;
+ const struct nlattr *vlan_parms;
+
+ if (!nl_parse_nested(options, vlan_policy, vlan_attrs,
+ ARRAY_SIZE(vlan_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse vlan action options");
+ return EPROTO;
+ }
+
+ vlan_parms = vlan_attrs[TCA_VLAN_PARMS];
+ v = nl_attr_get_unspec(vlan_parms, sizeof *v);
+ if (v->v_action == TCA_VLAN_ACT_PUSH) {
+ struct nlattr *vlan_id = vlan_attrs[TCA_VLAN_PUSH_VLAN_ID];
+ struct nlattr *vlan_prio = vlan_attrs[TCA_VLAN_PUSH_VLAN_PRIORITY];
+
+ flower->vlan_push_id = nl_attr_get_u16(vlan_id);
+ flower->vlan_push_prio = nl_attr_get_u8(vlan_prio);
+ } else if (v->v_action == TCA_VLAN_ACT_POP) {
+ flower->vlan_pop = 1;
+ } else {
+ VLOG_ERR_RL(&parse_err, "unknown vlan action: %d, %d",
+ v->action, v->v_action);
+ return EINVAL;
+ }
+ return 0;
+}
+
+static const struct nl_policy act_policy[] = {
+ [TCA_ACT_KIND] = { .type = NL_A_STRING, .optional = false, },
+ [TCA_ACT_OPTIONS] = { .type = NL_A_NESTED, .optional = false, },
+ [TCA_ACT_STATS] = { .type = NL_A_NESTED, .optional = false, },
+};
+
+static const struct nl_policy stats_policy[] = {
+ [TCA_STATS_BASIC] = { .type = NL_A_UNSPEC,
+ .min_len = sizeof(struct gnet_stats_basic),
+ .optional = false, },
+};
+
+static int
+nl_parse_single_action(struct nlattr *action, struct tc_flower *flower)
+{
+ struct nlattr *act_options;
+ struct nlattr *act_stats;
+ const struct nlattr *stats_basic;
+ const char *act_kind;
+ struct nlattr *action_attrs[ARRAY_SIZE(act_policy)];
+ struct nlattr *stats_attrs[ARRAY_SIZE(stats_policy)];
+ struct ovs_flow_stats *stats = &flower->stats;
+ const struct gnet_stats_basic *bs;
+
+ if (!nl_parse_nested(action, act_policy, action_attrs,
+ ARRAY_SIZE(act_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse single action options");
+ return EPROTO;
+ }
+
+ act_kind = nl_attr_get_string(action_attrs[TCA_ACT_KIND]);
+ act_options = action_attrs[TCA_ACT_OPTIONS];
+
+ if (!strcmp(act_kind, "gact")) {
+ nl_parse_act_drop(act_options, flower);
+ } else if (!strcmp(act_kind, "mirred")) {
+ nl_parse_act_mirred(act_options, flower);
+ } else if (!strcmp(act_kind, "vlan")) {
+ nl_parse_act_vlan(act_options, flower);
+ } else if (!strcmp(act_kind, "tunnel_key")) {
+ nl_parse_act_tunnel_key(act_options, flower);
+ } else {
+ VLOG_ERR_RL(&parse_err, "unknown tc action kind: %s", act_kind);
+ return EINVAL;
+ }
+
+ act_stats = action_attrs[TCA_ACT_STATS];
+
+ if (!nl_parse_nested(act_stats, stats_policy, stats_attrs,
+ ARRAY_SIZE(stats_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse action stats policy");
+ return EPROTO;
+ }
+
+ stats_basic = stats_attrs[TCA_STATS_BASIC];
+ bs = nl_attr_get_unspec(stats_basic, sizeof *bs);
+
+ stats->n_packets.lo = bs->packets;
+ stats->n_packets.hi = 0;
+ stats->n_bytes.hi = bs->bytes >> 32;
+ stats->n_bytes.lo = bs->bytes & 0x00000000FFFFFFFF;
+
+ return 0;
+}
+
+#define TCA_ACT_MIN_PRIO 1
+
+static int
+nl_parse_flower_actions(struct nlattr **attrs, struct tc_flower *flower)
+{
+ const struct nlattr *actions = attrs[TCA_FLOWER_ACT];
+ static struct nl_policy actions_orders_policy[TCA_ACT_MAX_PRIO + 1] = {};
+ struct nlattr *actions_orders[ARRAY_SIZE(actions_orders_policy)];
+ const int max_size = ARRAY_SIZE(actions_orders_policy);
+
+ for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
+ actions_orders_policy[i].type = NL_A_NESTED;
+ actions_orders_policy[i].optional = true;
+ }
+
+ if (!nl_parse_nested(actions, actions_orders_policy, actions_orders,
+ ARRAY_SIZE(actions_orders_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse flower order of actions");
+ return EPROTO;
+ }
+
+ for (int i = TCA_ACT_MIN_PRIO; i < max_size; i++) {
+ if (actions_orders[i]) {
+ int err = nl_parse_single_action(actions_orders[i], flower);
+
+ if (err) {
+ return err;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int
+nl_parse_flower_options(struct nlattr *nl_options, struct tc_flower *flower)
+{
+ struct nlattr *attrs[ARRAY_SIZE(tca_flower_policy)];
+
+ if (!nl_parse_nested(nl_options, tca_flower_policy,
+ attrs, ARRAY_SIZE(tca_flower_policy))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse flower classifier options");
+ return EPROTO;
+ }
+
+ nl_parse_flower_eth(attrs, flower);
+ nl_parse_flower_vlan(attrs, flower);
+ nl_parse_flower_ip(attrs, flower);
+ nl_parse_flower_tunnel(attrs, flower);
+ return nl_parse_flower_actions(attrs, flower);
+}
+
+int
+parse_netlink_to_tc_flower(struct ofpbuf *reply, struct tc_flower *flower)
+{
+ struct tcmsg *tc;
+ struct nlattr *ta[ARRAY_SIZE(tca_policy)];
+ const char *kind;
+
+ memset(flower, 0, sizeof *flower);
+ if (NLMSG_HDRLEN + (sizeof *tc) > reply->size) {
+ return EPROTO;
+ }
+
+ tc = ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
+ flower->handle = tc->tcm_handle;
+ flower->key.eth_type = (OVS_FORCE ovs_be16) tc_get_minor(tc->tcm_info);
+ flower->mask.eth_type = OVS_BE16_MAX;
+ flower->prio = tc_get_major(tc->tcm_info);
+
+ if (!flower->handle) {
+ return EAGAIN;
+ }
+
+ if (!nl_policy_parse(reply, NLMSG_HDRLEN + sizeof *tc,
+ tca_policy, ta, ARRAY_SIZE(ta))) {
+ VLOG_ERR_RL(&parse_err, "failed to parse tca policy");
+ return EPROTO;
+ }
+
+ kind = nl_attr_get_string(ta[TCA_KIND]);
+ if (strcmp(kind, "flower")) {
+ VLOG_ERR_RL(&parse_err, "failed to parse filter: not flower");
+ return EPROTO;
+ }
+
+ return nl_parse_flower_options(ta[TCA_OPTIONS], flower);
+}
+
+int
+tc_dump_flower_start(int ifindex, struct nl_dump *dump)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+
+ tcmsg = tc_make_request(ifindex, RTM_GETTFILTER, NLM_F_DUMP, &request);
+ tcmsg->tcm_parent = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_info = TC_H_UNSPEC;
+ tcmsg->tcm_handle = 0;
+
+ nl_dump_start(dump, NETLINK_ROUTE, &request);
+ ofpbuf_uninit(&request);
+
+ return 0;
+}
+
+int
+tc_flush(int ifindex)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+
+ tcmsg = tc_make_request(ifindex, RTM_DELTFILTER, NLM_F_ACK, &request);
+ tcmsg->tcm_parent = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_info = TC_H_UNSPEC;
+
+ return tc_transact(&request, NULL);
+}
+
+int
+tc_del_filter(int ifindex, int prio, int handle)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+ struct ofpbuf *reply;
+ int error;
+
+ tcmsg = tc_make_request(ifindex, RTM_DELTFILTER, NLM_F_ECHO, &request);
+ tcmsg->tcm_parent = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_info = tc_make_handle(prio, 0);
+ tcmsg->tcm_handle = handle;
+
+ error = tc_transact(&request, &reply);
+ if (!error) {
+ ofpbuf_delete(reply);
+ }
+ return error;
+}
+
+int
+tc_get_flower(int ifindex, int prio, int handle, struct tc_flower *flower)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+ struct ofpbuf *reply;
+ int error;
+
+ tcmsg = tc_make_request(ifindex, RTM_GETTFILTER, NLM_F_ECHO, &request);
+ tcmsg->tcm_parent = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_info = tc_make_handle(prio, 0);
+ tcmsg->tcm_handle = handle;
+
+ error = tc_transact(&request, &reply);
+ if (error) {
+ return error;
+ }
+
+ error = parse_netlink_to_tc_flower(reply, flower);
+ ofpbuf_delete(reply);
+ return error;
+}
+
+static void
+nl_msg_put_act_push_vlan(struct ofpbuf *request, uint16_t vid, uint8_t prio)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_vlan parm = { .action = TC_ACT_PIPE,
+ .v_action = TCA_VLAN_ACT_PUSH };
+
+ nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
+ nl_msg_put_u16(request, TCA_VLAN_PUSH_VLAN_ID, vid);
+ nl_msg_put_u8(request, TCA_VLAN_PUSH_VLAN_PRIORITY, prio);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_act_pop_vlan(struct ofpbuf *request)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "vlan");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_vlan parm = { .action = TC_ACT_PIPE,
+ .v_action = TCA_VLAN_ACT_POP };
+
+ nl_msg_put_unspec(request, TCA_VLAN_PARMS, &parm, sizeof parm);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_act_tunnel_key_release(struct ofpbuf *request)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
+ .t_action = TCA_TUNNEL_KEY_ACT_RELEASE };
+
+ nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_act_tunnel_key_set(struct ofpbuf *request, ovs_be64 id,
+ ovs_be32 ipv4_src, ovs_be32 ipv4_dst,
+ ovs_be16 tp_dst)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "tunnel_key");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_tunnel_key tun = { .action = TC_ACT_PIPE,
+ .t_action = TCA_TUNNEL_KEY_ACT_SET };
+
+ nl_msg_put_unspec(request, TCA_TUNNEL_KEY_PARMS, &tun, sizeof tun);
+
+ ovs_be32 id32 = be64_to_be32(id);
+ nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_KEY_ID, id32);
+ nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_SRC, ipv4_src);
+ nl_msg_put_be32(request, TCA_TUNNEL_KEY_ENC_IPV4_DST, ipv4_dst);
+ nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_DST_PORT, tp_dst);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_act_drop(struct ofpbuf *request)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "gact");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_gact p = { .action = TC_ACT_SHOT };
+
+ nl_msg_put_unspec(request, TCA_GACT_PARMS, &p, sizeof p);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_act_redirect(struct ofpbuf *request, int ifindex)
+{
+ size_t offset;
+
+ nl_msg_put_string(request, TCA_ACT_KIND, "mirred");
+ offset = nl_msg_start_nested(request, TCA_ACT_OPTIONS);
+ {
+ struct tc_mirred m = { .action = TC_ACT_STOLEN,
+ .eaction = TCA_EGRESS_REDIR,
+ .ifindex = ifindex };
+
+ nl_msg_put_unspec(request, TCA_MIRRED_PARMS, &m, sizeof m);
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_flower_acts(struct ofpbuf *request, struct tc_flower *flower)
+{
+ size_t offset;
+ size_t act_offset;
+
+ offset = nl_msg_start_nested(request, TCA_FLOWER_ACT);
+ {
+ uint16_t act_index = 1;
+
+ if (flower->set.set) {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_tunnel_key_set(request, flower->set.id,
+ flower->set.ipv4_src,
+ flower->set.ipv4_dst,
+ flower->set.tp_dst);
+ nl_msg_end_nested(request, act_offset);
+ }
+ if (flower->tunnel.tunnel) {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_tunnel_key_release(request);
+ nl_msg_end_nested(request, act_offset);
+ }
+ if (flower->vlan_pop) {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_pop_vlan(request);
+ nl_msg_end_nested(request, act_offset);
+ }
+ if (flower->vlan_push_id) {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_push_vlan(request,
+ flower->vlan_push_id,
+ flower->vlan_push_prio);
+ nl_msg_end_nested(request, act_offset);
+ }
+ if (flower->ifindex_out) {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_redirect(request, flower->ifindex_out);
+ nl_msg_end_nested(request, act_offset);
+ } else {
+ act_offset = nl_msg_start_nested(request, act_index++);
+ nl_msg_put_act_drop(request);
+ nl_msg_end_nested(request, act_offset);
+ }
+ }
+ nl_msg_end_nested(request, offset);
+}
+
+static void
+nl_msg_put_masked_value(struct ofpbuf *request, uint16_t type,
+ uint16_t mask_type, const void *data,
+ const void *mask_data, size_t len)
+{
+ if (mask_type != TCA_FLOWER_UNSPEC) {
+ if (is_all_zeros(mask_data, len)) {
+ return;
+ }
+ nl_msg_put_unspec(request, mask_type, mask_data, len);
+ }
+ nl_msg_put_unspec(request, type, data, len);
+}
+
+static void
+nl_msg_put_flower_tunnel(struct ofpbuf *request, struct tc_flower *flower)
+{
+ ovs_be32 ipv4_src = flower->tunnel.ipv4_src;
+ ovs_be32 ipv4_dst = flower->tunnel.ipv4_dst;
+ ovs_be16 tp_dst = flower->tunnel.tp_dst;
+ ovs_be32 id = be64_to_be32(flower->tunnel.id);
+
+ nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_KEY_ID, id);
+ nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_SRC, ipv4_src);
+ nl_msg_put_be32(request, TCA_FLOWER_KEY_ENC_IPV4_DST, ipv4_dst);
+ nl_msg_put_be16(request, TCA_FLOWER_KEY_ENC_UDP_DST_PORT, tp_dst);
+}
+
+static void
+nl_msg_put_flower_options(struct ofpbuf *request, struct tc_flower *flower)
+{
+ uint16_t host_eth_type = ntohs(flower->key.eth_type);
+
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_ETH_DST,
+ TCA_FLOWER_KEY_ETH_DST_MASK,
+ &flower->key.dst_mac,
+ &flower->mask.dst_mac, ETH_ALEN);
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_ETH_SRC,
+ TCA_FLOWER_KEY_ETH_SRC_MASK,
+ &flower->key.src_mac,
+ &flower->mask.src_mac, ETH_ALEN);
+
+ if (host_eth_type == ETH_P_IP || host_eth_type == ETH_P_IPV6) {
+ if (flower->mask.ip_proto && flower->key.ip_proto) {
+ nl_msg_put_u8(request, TCA_FLOWER_KEY_IP_PROTO,
+ flower->key.ip_proto);
+ }
+ if (flower->key.ip_proto == IPPROTO_UDP) {
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_UDP_SRC,
+ TCA_FLOWER_KEY_UDP_SRC_MASK,
+ &flower->key.src_port,
+ &flower->mask.src_port, 2);
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_UDP_DST,
+ TCA_FLOWER_KEY_UDP_DST_MASK,
+ &flower->key.dst_port,
+ &flower->mask.dst_port, 2);
+ } else if (flower->key.ip_proto == IPPROTO_TCP) {
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_TCP_SRC,
+ TCA_FLOWER_KEY_TCP_SRC_MASK,
+ &flower->key.src_port,
+ &flower->mask.src_port, 2);
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_TCP_DST,
+ TCA_FLOWER_KEY_TCP_DST_MASK,
+ &flower->key.dst_port,
+ &flower->mask.dst_port, 2);
+ }
+ }
+ if (host_eth_type == ETH_P_IP) {
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_IPV4_SRC,
+ TCA_FLOWER_KEY_IPV4_SRC_MASK,
+ &flower->key.ipv4.ipv4_src,
+ &flower->mask.ipv4.ipv4_src,
+ sizeof flower->key.ipv4.ipv4_src);
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_IPV4_DST,
+ TCA_FLOWER_KEY_IPV4_DST_MASK,
+ &flower->key.ipv4.ipv4_dst,
+ &flower->mask.ipv4.ipv4_dst,
+ sizeof flower->key.ipv4.ipv4_dst);
+ } else if (host_eth_type == ETH_P_IPV6) {
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_IPV6_SRC,
+ TCA_FLOWER_KEY_IPV6_SRC_MASK,
+ &flower->key.ipv6.ipv6_src,
+ &flower->mask.ipv6.ipv6_src,
+ sizeof flower->key.ipv6.ipv6_src);
+ nl_msg_put_masked_value(request,
+ TCA_FLOWER_KEY_IPV6_DST,
+ TCA_FLOWER_KEY_IPV6_DST_MASK,
+ &flower->key.ipv6.ipv6_dst,
+ &flower->mask.ipv6.ipv6_dst,
+ sizeof flower->key.ipv6.ipv6_dst);
+ }
+
+ nl_msg_put_be16(request, TCA_FLOWER_KEY_ETH_TYPE, flower->key.eth_type);
+
+ if (host_eth_type == ETH_P_8021Q) {
+ if (flower->key.vlan_id || flower->key.vlan_prio) {
+ nl_msg_put_u16(request, TCA_FLOWER_KEY_VLAN_ID,
+ flower->key.vlan_id);
+ nl_msg_put_u8(request, TCA_FLOWER_KEY_VLAN_PRIO,
+ flower->key.vlan_prio);
+ }
+ if (flower->key.encap_eth_type) {
+ nl_msg_put_be16(request, TCA_FLOWER_KEY_VLAN_ETH_TYPE,
+ flower->key.encap_eth_type);
+ }
+ }
+
+ nl_msg_put_u32(request, TCA_FLOWER_FLAGS, 0);
+
+ if (flower->tunnel.tunnel) {
+ nl_msg_put_flower_tunnel(request, flower);
+ }
+
+ nl_msg_put_flower_acts(request, flower);
+}
+
+int
+tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle,
+ struct tc_flower *flower)
+{
+ struct ofpbuf request;
+ struct tcmsg *tcmsg;
+ struct ofpbuf *reply;
+ int error = 0;
+ size_t basic_offset;
+ uint16_t eth_type = (OVS_FORCE uint16_t) flower->key.eth_type;
+
+ tcmsg = tc_make_request(ifindex, RTM_NEWTFILTER,
+ NLM_F_CREATE | NLM_F_ECHO, &request);
+ tcmsg->tcm_parent = tc_make_handle(0xffff, 0);
+ tcmsg->tcm_info = tc_make_handle(prio, eth_type);
+ tcmsg->tcm_handle = handle;
+
+ nl_msg_put_string(&request, TCA_KIND, "flower");
+ basic_offset = nl_msg_start_nested(&request, TCA_OPTIONS);
+ {
+ nl_msg_put_flower_options(&request, flower);
+ }
+ nl_msg_end_nested(&request, basic_offset);
+
+ error = tc_transact(&request, &reply);
+ if (!error) {
+ struct tcmsg *tc =
+ ofpbuf_at_assert(reply, NLMSG_HDRLEN, sizeof *tc);
+
+ flower->prio = tc_get_major(tc->tcm_info);
+ flower->handle = tc->tcm_handle;
+ ofpbuf_delete(reply);
+ }
+
+ return error;
+}
diff --git a/lib/tc.h b/lib/tc.h
new file mode 100644
index 0000000..5ca6c55
--- /dev/null
+++ b/lib/tc.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+
+#ifndef TC_H
+#define TC_H 1
+
+#include <linux/pkt_cls.h>
+#include <linux/pkt_sched.h>
+#include "odp-netlink.h"
+#include "netlink-socket.h"
+
+#define TC_POLICY_DEFAULT "none"
+
+unsigned int tc_make_handle(unsigned int major, unsigned int minor);
+unsigned int tc_get_major(unsigned int handle);
+unsigned int tc_get_minor(unsigned int handle);
+struct tcmsg *tc_make_request(int ifindex, int type, unsigned int flags,
+ struct ofpbuf *request);
+int tc_transact(struct ofpbuf *request, struct ofpbuf **replyp);
+int tc_add_del_ingress_qdisc(int ifindex, bool add);
+
+struct tc_flower_key {
+ ovs_be16 eth_type;
+ uint8_t ip_proto;
+
+ struct eth_addr dst_mac;
+ struct eth_addr src_mac;
+
+ ovs_be16 src_port;
+ ovs_be16 dst_port;
+
+ uint16_t vlan_id;
+ uint8_t vlan_prio;
+
+ ovs_be16 encap_eth_type;
+ uint8_t encap_ip_proto;
+ union {
+ struct {
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ } encap_ipv4;
+ struct {
+ ovs_be32 ipv6_src[4];
+ ovs_be32 ipv6_dst[4];
+ } encap_ipv6;
+ };
+
+ union {
+ struct {
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ } ipv4;
+ struct {
+ ovs_be32 ipv6_src[4];
+ ovs_be32 ipv6_dst[4];
+ } ipv6;
+ };
+};
+
+struct tc_flower {
+ uint32_t handle;
+ uint32_t prio;
+
+ struct tc_flower_key key;
+ struct tc_flower_key mask;
+
+ uint8_t vlan_pop;
+ uint16_t vlan_push_id;
+ uint8_t vlan_push_prio;
+
+ int ifindex;
+ int ifindex_out;
+
+ struct ovs_flow_stats stats;
+ uint64_t lastused;
+
+ struct {
+ bool set;
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ ovs_be64 id;
+ ovs_be16 tp_src;
+ ovs_be16 tp_dst;
+ } set;
+
+ struct {
+ bool tunnel;
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ ovs_be64 id;
+ ovs_be16 tp_src;
+ ovs_be16 tp_dst;
+ } tunnel;
+};
+
+int tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle,
+ struct tc_flower *flower);
+int tc_del_filter(int ifindex, int prio, int handle);
+int tc_get_flower(int ifindex, int prio, int handle,
+ struct tc_flower *flower);
+int tc_flush(int ifindex);
+int tc_dump_flower_start(int ifindex, struct nl_dump *dump);
+int parse_netlink_to_tc_flower(struct ofpbuf *reply,
+ struct tc_flower *flower);
+
+#endif /* tc.h */
--
1.7.1
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