diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index 7bf110c..61bca31 100644
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -207,6 +207,58 @@ Using the DPDK with ovs-vswitchd:
    ./ovs-ofctl add-flow br0 in_port=2,action=output:1
    ```
 
+8. QoS usage example
+
+   OVS supports egress QoS for physical and virtual DPDK port types. Currently
+   there is only one supported QoS type 'us-policer'.
+
+   Assuming you have a vhost-user port transmitting traffic consisting of
+   packets of size 64 bytes, the following command would limit the egress
+   transmission rate of the port to ~1,000,000 packets per second:
+
+   `ovs-vsctl set port vhost-user0 qos=@newqos -- --id=@newqos create qos
+   type=us-policer other-config:cir=46000000 other-config:cbs=2048
+   other-config:ebs=2048`
+
+   An explanation of the us-policer specific parameters are detailed below.
+
+   `type=us-policer`: Sets the QoS type to userspace-policer. This is required
+   so that the dpdk-netdev can be configured with the correct QoS type.
+   The specifics of us-policer can be found in the vswitch.xml file.
+
+   `other-config:cir=46000000`: The Committed Information Rate (cir)
+   represents the bytes per second rate at which the token buckets will be
+   updated. See RFC2697 for specific details. The cir value is calculated by
+   (pps x packet data size). For example the value 46000000 can be broken
+   into '1,000,000 x 46'. Where 1,000,000 is the policing rate for the number
+   of packets per second and 46 represents the size of the packet data for a 64
+   byte ip packet.
+
+   `other-config:cbs=2048`: This represents the value of the Commited Burst Size
+   (cbs) token bucket. At a minimum this value should be be set to the expected
+   largest size packet in the traffic stream. In practice larger values may be
+   used to increase the size of the token bucket. If a packet can be
+   transmitted then the cbs will be decremented by the number of bytes/tokens of
+   the packet. If there are not enough tokens in the cbs bucket then the Excess
+   Burst Size (ebs) token bucket will be used too and excess bytes decremented
+   in the ebs.
+
+   `other-config:ebs=2048`: This represents the value of the Excess Burst Size
+   (ebs). At a minimum this value should be set to the expected largest size
+   packet in the traffic stream. In practice larger values may be used to
+   increase the size of the token bucket. In the us-policer implementation any
+   packet that requires tokens from the ebs token bucket will be marked to be
+   dropped. Any packet that has exhausted the ebs bucket will also be dropped.
+
+   To examine the QoS configuration of the port:
+
+   `ovs-appctl -t ovs-vswitchd qos/show vhost-user0`
+
+   To clear the QoS configuration from the port and ovsdb use the following:
+
+   `ovs-vsctl -- destroy QoS vhost-user0 -- clear Port vhost-user0 qos`
+
+
 Performance Tuning:
 -------------------
 
diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
index b72a33b..7e7fca1 100644
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -44,6 +44,7 @@
 #include "ovs-rcu.h"
 #include "packets.h"
 #include "shash.h"
+#include "smap.h"
 #include "sset.h"
 #include "unaligned.h"
 #include "timeval.h"
@@ -52,12 +53,14 @@
 
 #include "rte_config.h"
 #include "rte_mbuf.h"
+#include "rte_meter.h"
 #include "rte_virtio_net.h"
 
 VLOG_DEFINE_THIS_MODULE(dpdk);
 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
 
 #define DPDK_PORT_WATCHDOG_INTERVAL 5
+#define DPDK_MAX_QOS_NAME_SIZE 10
 
 #define OVS_CACHE_LINE_SIZE CACHE_LINE_SIZE
 #define OVS_VPORT_DPDK "ovs_dpdk"
@@ -142,6 +145,122 @@ static int rte_eal_init_ret = ENODEV;
 
 static struct ovs_mutex dpdk_mutex = OVS_MUTEX_INITIALIZER;
 
+/* Quality of Service */
+
+/* An instance of a QoS configuration.  Always associated with a particular
+ * network device.
+ *
+ * Each QoS implementation subclasses this with whatever additional data it
+ * needs.
+ */
+struct qos_conf{
+    const struct dpdk_qos_ops *ops;
+};
+
+/* A particular implementation of dpdk QoS operations.
+ *
+ * The functions below return 0 if successful or a positive errno value on
+ * failure, except where otherwise noted. All of them must be provided, except
+ * where otherwise noted.
+ */
+struct dpdk_qos_ops{
+
+    /* Name of the QoS type */
+    const char *qos_name;
+
+    /* Called to construct the QoS implementation on 'netdev'. The
+     * implementation should make the appropriate calls to configure QoS
+     * according to 'details'. The implementation may assume that any current
+     * QoS configuration already installed should be destroyed before
+     * constructing the new configuration.
+     *
+     * The contents of 'details' should be documented as valid for 'ovs_name'
+     * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml
+     * (which is built as ovs-vswitchd.conf.db(8)).
+     *
+     * This function must return 0 if and only if it sets 'netdev->qos_conf'
+     * to an initialized 'struct qos_conf'.
+     *
+     * For all QoS implementations it should always be non-null.
+     */
+    int (*qos_construct)(struct netdev *netdev, const struct smap *details);
+
+    /* Destroys the data structures allocated by the implementation as part of
+     * 'qos_conf.
+     *
+     * For all QoS implementations it should always be non-null.
+     */
+    void (*qos_destruct)(struct netdev *netdev, struct qos_conf *conf);
+
+    /* Retrieves details of 'netdev->qos_conf' configuration into 'details'.
+     *
+     * The contents of 'details' should be documented as valid for 'ovs_name'
+     * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml
+     * (which is built as ovs-vswitchd.conf.db(8)).
+     */
+    int (*qos_get)(const struct netdev *netdev, struct smap *details);
+
+    /* Reconfigures 'netdev->qos_conf' according to 'details', performing any
+     * required calls to complete the reconfiguration.
+     *
+     * The contents of 'details' should be documented as valid for 'ovs_name'
+     * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml
+     * (which is built as ovs-vswitchd.conf.db(8)).
+     *
+     * This function may be null if 'qos_conf' is not configurable.
+     */
+    int (*qos_set)(struct netdev *netdev, const struct smap *details);
+
+    /* Modify an array of rte_mbufs. The modification is specific to
+     * each qos implementation.
+     *
+     * The function should take and array of mbufs and an int representing
+     * the current number of mbufs present in the array.
+     *
+     * After the function has performed a qos modification to the array of mbufs
+     * it returns an int representing the number of mbufs now present in the
+     * array. This value is can then be passed to the port send function along
+     * with the modified array for transmission.
+     *
+     * For all QoS implementations it should always be non-null.
+     */
+    int (*qos_alg_process)(struct netdev *netdev, struct rte_mbuf **pkts,
+                           int pkt_cnt);
+};
+
+/* dpdk_qos_ops for each type of user space QoS implementation */
+static const struct dpdk_qos_ops us_policer_ops;
+
+/*
+ * Array of dpdk_qos_ops, contains pointer to all supported QoS
+ * operations.
+ */
+static const struct dpdk_qos_ops *const qos_confs[] = {
+    &us_policer_ops,               /*User Space Strict Priority Queuing*/
+    NULL
+};
+
+/* Action that can be set for a packet for rte_meter */
+enum us_policer_action {
+        GREEN = e_RTE_METER_GREEN,
+        YELLOW = e_RTE_METER_YELLOW,
+        RED = e_RTE_METER_RED,
+        DROP = 3,
+};
+
+/*
+ * Table representing the policing policy. Rows indicate the input color,
+ * columns indicate the output color, and the value that is stored in
+ * the table indicates the action to be taken for that particular case.
+ */
+enum us_policer_action us_policer_table[e_RTE_METER_COLORS]
+                                       [e_RTE_METER_COLORS] =
+{
+	{ GREEN, DROP, DROP},
+	{ DROP, DROP, DROP},
+	{ DROP, DROP, DROP}
+};
+
 /* Contains all 'struct dpdk_dev's. */
 static struct ovs_list dpdk_list OVS_GUARDED_BY(dpdk_mutex)
     = OVS_LIST_INITIALIZER(&dpdk_list);
@@ -235,6 +354,11 @@ struct netdev_dpdk {
 
     /* In dpdk_list. */
     struct ovs_list list_node OVS_GUARDED_BY(dpdk_mutex);
+
+    /* QoS configuration and lock for the device */
+    struct qos_conf *qos_conf;
+    rte_spinlock_t qos_lock;
+
 };
 
 struct netdev_rxq_dpdk {
@@ -614,6 +738,10 @@ netdev_dpdk_init(struct netdev *netdev_, unsigned int port_no,
         goto unlock;
     }
 
+    /* Initialise QoS configuration to NULL and qos lock to unlocked */
+    netdev->qos_conf = NULL;
+    rte_spinlock_init(&netdev->qos_lock);
+
     netdev_->n_txq = NR_QUEUE;
     netdev_->n_rxq = NR_QUEUE;
     netdev->real_n_txq = NR_QUEUE;
@@ -1072,6 +1200,13 @@ __netdev_dpdk_vhost_send(struct netdev *netdev, struct dp_packet **pkts,
         goto out;
     }
 
+    /* Check has QoS has been configured for the netdev */
+    rte_spinlock_lock(&vhost_dev->qos_lock);
+    if (vhost_dev->qos_conf != NULL) {
+        cnt = vhost_dev->qos_conf->ops->qos_alg_process(netdev, cur_pkts, cnt);
+    }
+    rte_spinlock_unlock(&vhost_dev->qos_lock);
+
     /* There is vHost TX single queue, So we need to lock it for TX. */
     rte_spinlock_lock(&vhost_dev->vhost_tx_lock);
 
@@ -1216,6 +1351,14 @@ dpdk_do_tx_copy(struct netdev *netdev, int qid, struct dp_packet **pkts,
     if (dev->type == DPDK_DEV_VHOST) {
         __netdev_dpdk_vhost_send(netdev, (struct dp_packet **) mbufs, newcnt, true);
     } else {
+
+        /* Check if QoS has been configured for this netdev. */
+        rte_spinlock_lock(&dev->qos_lock);
+        if (dev->qos_conf != NULL) {
+            newcnt = dev->qos_conf->ops->qos_alg_process(netdev, mbufs, newcnt);
+        }
+        rte_spinlock_unlock(&dev->qos_lock);
+
         dpdk_queue_pkts(dev, qid, mbufs, newcnt);
         dpdk_queue_flush(dev, qid);
     }
@@ -1289,9 +1432,18 @@ netdev_dpdk_send__(struct netdev_dpdk *dev, int qid,
             }
         }
         if (next_tx_idx != cnt) {
-           dpdk_queue_pkts(dev, qid,
-                            (struct rte_mbuf **)&pkts[next_tx_idx],
-                            cnt-next_tx_idx);
+            cnt -= next_tx_idx;
+
+            /* Check if QoS has been configured for this netdev. */
+            rte_spinlock_lock(&dev->qos_lock);
+            if (dev->qos_conf != NULL) {
+                struct netdev *netdev = &dev->up;
+                cnt = dev->qos_conf->ops->qos_alg_process(netdev,
+                        (struct rte_mbuf**)pkts, cnt);
+            }
+            rte_spinlock_unlock(&dev->qos_lock);
+
+            dpdk_queue_pkts(dev, qid, (struct rte_mbuf **)&pkts[next_tx_idx], cnt);
         }
 
         if (OVS_UNLIKELY(dropped)) {
@@ -2032,6 +2184,256 @@ unlock_dpdk:
     return err;
 }
 
+/* QoS Functions */
+
+/*
+ * Initialize QoS configuration operations.
+ */
+static void
+qos_conf_init(struct qos_conf *conf, const struct dpdk_qos_ops *ops)
+{
+    conf->ops = ops;
+}
+
+/*
+ * Search existing QoS operations in qos_ops and compare each set of operations
+ * qos_name to name. Return a dpdk_qos_ops pointer to a match, else return
+ * NULL
+ */
+static const struct dpdk_qos_ops *
+qos_lookup_name(const char *name)
+{
+    const struct dpdk_qos_ops *const *opsp;
+
+    for (opsp = qos_confs; *opsp != NULL; opsp++) {
+        const struct dpdk_qos_ops *ops = *opsp;
+        if (!strncmp(name, ops->qos_name,DPDK_MAX_QOS_NAME_SIZE)) {
+            return ops;
+        }
+    }
+    return NULL;
+}
+
+/*
+ * Call qos_destruct to clean up items associated with the netdevs
+ * qos_conf. Set netdevs qos_conf to NULL.
+ */
+static void
+qos_delete_conf(struct netdev *netdev_)
+{
+    struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+
+    rte_spinlock_lock(&netdev->qos_lock);
+    if (netdev->qos_conf) {
+        if (netdev->qos_conf->ops->qos_destruct) {
+            netdev->qos_conf->ops->qos_destruct(netdev_, netdev->qos_conf);
+        }
+        netdev->qos_conf = NULL;
+    }
+    rte_spinlock_unlock(&netdev->qos_lock);
+}
+
+static int
+netdev_dpdk_get_qos_types(const struct netdev *netdev OVS_UNUSED,
+                           struct sset *types)
+{
+    const struct dpdk_qos_ops *const *opsp;
+
+    for (opsp = qos_confs; *opsp != NULL; opsp++) {
+        const struct dpdk_qos_ops *ops = *opsp;
+        if (ops->qos_construct && ops->qos_name[0] != '\0') {
+            sset_add(types, ops->qos_name);
+        }
+    }
+    return 0;
+}
+
+static int
+netdev_dpdk_get_qos(const struct netdev *netdev_,
+                    const char **typep, struct smap *details)
+{
+    struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+    int error = 0;
+
+    ovs_mutex_lock(&netdev->mutex);
+    if(netdev->qos_conf){
+        *typep = netdev->qos_conf->ops->qos_name;
+        error = (netdev->qos_conf->ops->qos_get
+                 ? netdev->qos_conf->ops->qos_get(netdev_, details): 0);
+    }
+    ovs_mutex_unlock(&netdev->mutex);
+
+    return error;
+}
+
+static int
+netdev_dpdk_set_qos(struct netdev *netdev_,
+                    const char *type, const struct smap *details)
+{
+    struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+    const struct dpdk_qos_ops *new_ops = NULL;
+    int error = 0;
+
+    /* If type is empty the current QoS configuration
+	   for the dpdk-netdev can be destroyed */
+    if(type[0] == '\0') {
+        qos_delete_conf(netdev_);
+    }
+
+    new_ops = qos_lookup_name(type);
+    if (!new_ops || !new_ops->qos_construct) {
+        return EOPNOTSUPP;
+    }
+
+    ovs_mutex_lock(&netdev->mutex);
+    if (netdev->qos_conf) {
+        if (new_ops == netdev->qos_conf->ops) {
+            error = new_ops->qos_set ? new_ops->qos_set(netdev_, details) : 0;
+        }
+        else {
+            /* Delete existing QoS configuration. */
+            qos_delete_conf(netdev_);
+            ovs_assert(netdev->qos_conf == NULL);
+
+            /* Install new QoS configuration. */
+            error = new_ops->qos_construct(netdev_, details);
+            ovs_assert((error == 0) == (netdev->qos_conf != NULL));
+        }
+    } else {
+        error = new_ops->qos_construct(netdev_, details);
+        ovs_assert((error == 0) == (netdev->qos_conf != NULL));
+    }
+
+    ovs_mutex_unlock(&netdev->mutex);
+    return error;
+}
+
+/* us-policer details */
+
+struct us_policer {
+    struct qos_conf qos_conf;
+    struct rte_meter_srtcm_params app_srtcm_params;
+    struct rte_meter_srtcm test_meter;
+};
+
+static struct us_policer *
+us_policer_get__(const struct netdev *netdev_)
+{
+    struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+    return CONTAINER_OF(netdev->qos_conf, struct us_policer, qos_conf);
+}
+
+static int
+us_policer_qos_construct(struct netdev *netdev_, const struct smap *details)
+{
+    struct netdev_dpdk *netdev = netdev_dpdk_cast(netdev_);
+    struct us_policer *policer;
+    const char *cir_s;
+    const char *cbs_s;
+    const char *ebs_s;
+    int err = 0;
+
+    rte_spinlock_lock(&netdev->qos_lock);
+    policer = xmalloc(sizeof *policer);
+    qos_conf_init(&policer->qos_conf, &us_policer_ops);
+    netdev->qos_conf = &policer->qos_conf;
+    cir_s = smap_get(details, "cir");
+    cbs_s = smap_get(details, "cbs");
+    ebs_s = smap_get(details, "ebs");
+    policer->app_srtcm_params.cir = cir_s ? strtoull(cir_s, NULL, 10) : 0;
+    policer->app_srtcm_params.cbs = cbs_s ? strtoull(cbs_s, NULL, 10) : 0;
+    policer->app_srtcm_params.ebs = ebs_s ? strtoull(ebs_s, NULL, 10) : 0;
+    err = rte_meter_srtcm_config(&policer->test_meter, &policer->app_srtcm_params);
+    rte_spinlock_unlock(&netdev->qos_lock);
+
+    return err;
+}
+
+static void
+us_policer_qos_destruct(struct netdev *netdev_ OVS_UNUSED, struct qos_conf *conf)
+{
+    struct us_policer *policer = CONTAINER_OF(conf, struct us_policer, qos_conf);
+    free(policer);
+}
+
+static int
+us_policer_qos_get(const struct netdev *netdev, struct smap *details)
+{
+    struct us_policer *policer = us_policer_get__(netdev);
+    smap_add_format(details, "cir", "%llu", 1ULL * policer->app_srtcm_params.cir);
+    smap_add_format(details, "cbs", "%llu", 1ULL * policer->app_srtcm_params.cbs);
+    smap_add_format(details, "ebs", "%llu", 1ULL * policer->app_srtcm_params.ebs);
+    return 0;
+}
+
+static int
+us_policer_qos_set(struct netdev *netdev_, const struct smap *details)
+{
+    struct us_policer *policer;
+    const char *cir_s;
+    const char *cbs_s;
+    const char *ebs_s;
+    int err = 0;
+
+    policer = us_policer_get__(netdev_);
+    cir_s = smap_get(details, "cir");
+    cbs_s = smap_get(details, "cbs");
+    ebs_s = smap_get(details, "ebs");
+    policer->app_srtcm_params.cir = cir_s ? strtoull(cir_s, NULL, 10) : 0;
+    policer->app_srtcm_params.cbs = cbs_s ? strtoull(cbs_s, NULL, 10) : 0;
+    policer->app_srtcm_params.ebs = ebs_s ? strtoull(ebs_s, NULL, 10) : 0;
+    err = rte_meter_srtcm_config(&policer->test_meter, &policer->app_srtcm_params);
+
+    return err;
+}
+
+static inline int
+__us_policer_pkt_handle(struct rte_meter_srtcm *meter, struct rte_mbuf *pkt, uint64_t time)
+{
+	uint8_t input_color, output_color;
+	uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) - sizeof(struct ether_hdr);
+	input_color = 0;
+	enum us_policer_action action;
+
+	/* color input is not used for blind modes */
+	output_color = (uint8_t) rte_meter_srtcm_color_blind_check(meter, time, pkt_len);
+
+	/* Apply policing and set the output color */
+	action = us_policer_table[input_color][output_color];
+
+	return action;
+}
+
+static int
+us_policer_alg_process(struct netdev *netdev_, struct rte_mbuf **pkts, int pkt_cnt)
+{
+	int i = 0;
+    int cnt = pkt_cnt;
+    struct us_policer *policer = us_policer_get__(netdev_);
+    struct rte_mbuf *pkt = NULL;
+    uint64_t current_time = rte_rdtsc();
+
+    for(i = 0; i < pkt_cnt; i++) {
+        pkt = pkts[i];
+        /* Handle current packet */
+        if (__us_policer_pkt_handle(&policer->test_meter, pkt, current_time) == DROP) {
+            rte_pktmbuf_free(pkt);
+            cnt = cnt - 1;
+        }
+    }
+
+    return cnt;
+}
+
+static const struct dpdk_qos_ops us_policer_ops = {
+    "us-policer",    /* qos_name */
+    us_policer_qos_construct,
+	us_policer_qos_destruct,
+    us_policer_qos_get,
+    us_policer_qos_set,
+	us_policer_alg_process
+};
+
 #define NETDEV_DPDK_CLASS(NAME, INIT, CONSTRUCT, DESTRUCT, MULTIQ, SEND, \
     GET_CARRIER, GET_STATS, GET_FEATURES, GET_STATUS, RXQ_RECV)          \
 {                                                             \
@@ -2069,10 +2471,10 @@ unlock_dpdk:
     NULL,                       /* set_advertisements */      \
                                                               \
     NULL,                       /* set_policing */            \
-    NULL,                       /* get_qos_types */           \
+    netdev_dpdk_get_qos_types,                                \
     NULL,                       /* get_qos_capabilities */    \
-    NULL,                       /* get_qos */                 \
-    NULL,                       /* set_qos */                 \
+    netdev_dpdk_get_qos,                                      \
+    netdev_dpdk_set_qos,                                      \
     NULL,                       /* get_queue */               \
     NULL,                       /* set_queue */               \
     NULL,                       /* delete_queue */            \
diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 0ab4a9a..77f70a4 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -3283,6 +3283,18 @@
           for information on how this classifier works.
         </dd>
       </dl>
+      <dl>
+        <dt><code>us-policer</code></dt>
+        <dd>
+          Userspace egress policer algorithm. This implementation uses the DPDK
+          rte_meter library. The rte_meter library provides an implementation of
+          srTCM (RFC2697) which allows the metering and policing of traffic.
+          For more information regarding the usage of the DPDK rte_meter see
+          <code>http://dpdk.org/doc/guides/sample_app_ug/qos_metering.html</code>
+          For more information regarding srTCM see
+          <code>https://tools.ietf.org/html/rfc2697</code>
+        </dd>
+      </dl>
     </column>
 
     <column name="queues">
@@ -3319,6 +3331,34 @@
       </column>
     </group>
 
+    <group title="Configuration for us-policer QoS">
+      <p>
+        <ref table="QoS"/> <ref table="QoS" column="type"/>
+        <code>us-policer</code> provides egress policing for userspace port
+        types with DPDK.
+
+        It has the following key-value pairs defined.
+      </p>
+
+      <column name="other_config" key="cir" type='{"type": "integer"}'>
+        The Committed Information Rate (CIR) is measured in bytes of IP packets
+        per second, i.e., it includes the IP header, but not link specific
+        (e.g. Ethernet) headers. See RFC2697 for more details.
+      </column>
+      <column name="other_config" key="cbs" type='{"type": "integer"}'>
+        The Committed Burst Size (CBS) is measured in bytes. It must be set to a
+        value greater than 0. It is recommended that the minimum value for CBS
+        be the size of the largest possible IP packet in the stream.
+        See RFC2697 for more details.
+      </column>
+      <column name="other_config" key="ebs" type='{"type": "integer"}'>
+        The Excess Burst Size (EBS) is measured in bytes. It must be set to a
+        value greater than 0. It is recommended that the minimum value for EBS
+        be the size of the largest possible IP packet in the stream.
+        See RFC2697 for more details.
+      </column>
+    </group>
+
     <group title="Common Columns">
       The overall purpose of these columns is described under <code>Common
       Columns</code> at the beginning of this document.
