case OVS_ACTION_ATTR_OUTPUT:
p = dp_netdev_lookup_port(dp, u32_to_odp(nl_attr_get_u32(a)));
if (OVS_LIKELY(p)) {
- netdev_send(p->netdev, packets, cnt, may_steal);
+ netdev_send(p->netdev, NETDEV_QID_NONE, packets, cnt, may_steal);
} else if (may_steal) {
for (i = 0; i < cnt; i++) {
dpif_packet_delete(packets[i]);
}
}
+#define NETDEV_QID_NONE INT_MAX
+
#define NR_QUEUE 1
#define NR_PMD_THREADS 1
* system or a tap device.
*/
static int
-netdev_bsd_send(struct netdev *netdev_, struct dpif_packet **pkts, int cnt,
- bool may_steal)
+netdev_bsd_send(struct netdev *netdev_, int qid OVS_UNUSED,
+ struct dpif_packet **pkts, int cnt, bool may_steal)
{
struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
const char *name = netdev_get_name(netdev_);
* with netdev_send().
*/
static void
-netdev_bsd_send_wait(struct netdev *netdev_)
+netdev_bsd_send_wait(struct netdev *netdev_, int qid OVS_UNUSED)
{
struct netdev_bsd *dev = netdev_bsd_cast(netdev_);
if (err) {
goto unlock;
}
+ netdev_->n_txq = NR_QUEUE;
netdev_->n_rxq = NR_QUEUE;
list_push_back(&dpdk_list, &netdev->list_node);
}
static int
-netdev_dpdk_send(struct netdev *netdev, struct dpif_packet **pkts, int cnt,
- bool may_steal)
+netdev_dpdk_send(struct netdev *netdev, int qid, struct dpif_packet **pkts,
+ int cnt, bool may_steal)
{
struct netdev_dpdk *dev = netdev_dpdk_cast(netdev);
int ret;
}
}
} else {
- int qid;
int next_tx_idx = 0;
int dropped = 0;
}
static int
-netdev_dummy_send(struct netdev *netdev, struct dpif_packet **pkts, int cnt,
- bool may_steal)
+netdev_dummy_send(struct netdev *netdev, int qid OVS_UNUSED,
+ struct dpif_packet **pkts, int cnt, bool may_steal)
{
struct netdev_dummy *dev = netdev_dummy_cast(netdev);
int error = 0;
* The kernel maintains a packet transmission queue, so the caller is not
* expected to do additional queuing of packets. */
static int
-netdev_linux_send(struct netdev *netdev_, struct dpif_packet **pkts, int cnt,
- bool may_steal)
+netdev_linux_send(struct netdev *netdev_, int qid OVS_UNUSED,
+ struct dpif_packet **pkts, int cnt, bool may_steal)
{
int i;
int error = 0;
* expected to do additional queuing of packets. Thus, this function is
* unlikely to ever be used. It is included for completeness. */
static void
-netdev_linux_send_wait(struct netdev *netdev)
+netdev_linux_send_wait(struct netdev *netdev, int qid OVS_UNUSED)
{
if (is_tap_netdev(netdev)) {
/* TAP device always accepts packets.*/
uint64_t change_seq;
/* The following are protected by 'netdev_mutex' (internal to netdev.c). */
+ int n_txq;
int n_rxq;
int ref_cnt; /* Times this devices was opened. */
struct shash_node *node; /* Pointer to element in global map. */
int (*get_numa_id)(const struct netdev *netdev);
/* Sends buffers on 'netdev'.
- * Returns 0 if successful (for every buffer), otherwise a positive errno value.
- * Returns EAGAIN without blocking if one or more packets cannot be
+ * Returns 0 if successful (for every buffer), otherwise a positive errno
+ * value. Returns EAGAIN without blocking if one or more packets cannot be
* queued immediately. Returns EMSGSIZE if a partial packet was transmitted
* or if a packet is too big or too small to transmit on the device.
*
*
* To retain ownership of 'buffers' caller can set may_steal to false.
*
- * The network device is expected to maintain a packet transmission queue,
- * so that the caller does not ordinarily have to do additional queuing of
- * packets.
+ * The network device is expected to maintain one or more packet
+ * transmission queues, so that the caller does not ordinarily have to
+ * do additional queuing of packets. 'qid' specifies the queue to use
+ * and can be ignored if the implementation does not support multiple
+ * queues.
*
* May return EOPNOTSUPP if a network device does not implement packet
* transmission through this interface. This function may be set to null
* network device from being usefully used by the netdev-based "userspace
* datapath". It will also prevent the OVS implementation of bonding from
* working properly over 'netdev'.) */
- int (*send)(struct netdev *netdev, struct dpif_packet **buffers, int cnt,
- bool may_steal);
+ int (*send)(struct netdev *netdev, int qid, struct dpif_packet **buffers,
+ int cnt, bool may_steal);
/* Registers with the poll loop to wake up from the next call to
* poll_block() when the packet transmission queue for 'netdev' has
* sufficient room to transmit a packet with netdev_send().
*
- * The network device is expected to maintain a packet transmission queue,
- * so that the caller does not ordinarily have to do additional queuing of
- * packets. Thus, this function is unlikely to ever be useful.
+ * The network device is expected to maintain one or more packet
+ * transmission queues, so that the caller does not ordinarily have to
+ * do additional queuing of packets. 'qid' specifies the queue to use
+ * and can be ignored if the implementation does not support multiple
+ * queues.
*
* May be null if not needed, such as for a network device that does not
* implement packet transmission through the 'send' member function. */
- void (*send_wait)(struct netdev *netdev);
+ void (*send_wait)(struct netdev *netdev, int qid);
/* Sets 'netdev''s Ethernet address to 'mac' */
int (*set_etheraddr)(struct netdev *netdev, const uint8_t mac[6]);
static void restore_all_flags(void *aux OVS_UNUSED);
void update_device_args(struct netdev *, const struct shash *args);
+int
+netdev_n_txq(const struct netdev *netdev)
+{
+ return netdev->n_txq;
+}
+
int
netdev_n_rxq(const struct netdev *netdev)
{
netdev->change_seq = 1;
netdev->node = shash_add(&netdev_shash, name, netdev);
- /* By default enable one rx queue per netdev. */
- if (netdev->netdev_class->rxq_alloc) {
- netdev->n_rxq = 1;
- } else {
- netdev->n_rxq = 0;
- }
+ /* By default enable one tx and rx queue per netdev. */
+ netdev->n_txq = netdev->netdev_class->send ? 1 : 0;
+ netdev->n_rxq = netdev->netdev_class->rxq_alloc ? 1 : 0;
+
list_init(&netdev->saved_flags_list);
error = rc->class->construct(netdev);
*
* To retain ownership of 'buffer' caller can set may_steal to false.
*
- * The kernel maintains a packet transmission queue, so the caller is not
- * expected to do additional queuing of packets.
+ * The network device is expected to maintain one or more packet
+ * transmission queues, so that the caller does not ordinarily have to
+ * do additional queuing of packets. 'qid' specifies the queue to use
+ * and can be ignored if the implementation does not support multiple
+ * queues.
*
* Some network devices may not implement support for this function. In such
* cases this function will always return EOPNOTSUPP. */
int
-netdev_send(struct netdev *netdev, struct dpif_packet **buffers, int cnt,
- bool may_steal)
+netdev_send(struct netdev *netdev, int qid, struct dpif_packet **buffers,
+ int cnt, bool may_steal)
{
int error;
error = (netdev->netdev_class->send
- ? netdev->netdev_class->send(netdev, buffers, cnt, may_steal)
+ ? netdev->netdev_class->send(netdev, qid, buffers, cnt, may_steal)
: EOPNOTSUPP);
if (!error) {
COVERAGE_INC(netdev_sent);
* when the packet transmission queue has sufficient room to transmit a packet
* with netdev_send().
*
- * The kernel maintains a packet transmission queue, so the client is not
- * expected to do additional queuing of packets. Thus, this function is
- * unlikely to ever be used. It is included for completeness. */
+ * The network device is expected to maintain one or more packet
+ * transmission queues, so that the caller does not ordinarily have to
+ * do additional queuing of packets. 'qid' specifies the queue to use
+ * and can be ignored if the implementation does not support multiple
+ * queues. */
void
-netdev_send_wait(struct netdev *netdev)
+netdev_send_wait(struct netdev *netdev, int qid)
{
if (netdev->netdev_class->send_wait) {
- netdev->netdev_class->send_wait(netdev);
+ netdev->netdev_class->send_wait(netdev, qid);
}
}
void netdev_enumerate_types(struct sset *types);
bool netdev_is_reserved_name(const char *name);
+int netdev_n_txq(const struct netdev *netdev);
int netdev_n_rxq(const struct netdev *netdev);
bool netdev_is_pmd(const struct netdev *netdev);
int netdev_rxq_drain(struct netdev_rxq *);
/* Packet transmission. */
-int netdev_send(struct netdev *, struct dpif_packet **, int cnt,
+int netdev_send(struct netdev *, int qid, struct dpif_packet **, int cnt,
bool may_steal);
-void netdev_send_wait(struct netdev *);
+void netdev_send_wait(struct netdev *, int qid);
/* Hardware address. */
int netdev_set_etheraddr(struct netdev *, const uint8_t mac[6]);