ethdev: retrieve RX available descriptors
[dpdk.git] / lib / librte_ether / rte_ethdev.c
index 7aadbd3..f7535c8 100644 (file)
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  * 
- *   Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
  *   Redistribution and use in source and binary forms, with or without 
@@ -124,6 +124,7 @@ struct rte_eth_dev_callback {
        rte_eth_dev_cb_fn cb_fn;                /**< Callback address */
        void *cb_arg;                           /**< Parameter for callback */
        enum rte_eth_event_type event;          /**< Interrupt event type */
+       uint32_t active;                        /**< Callback is executing */
 };
 
 enum {
@@ -240,6 +241,14 @@ rte_eth_driver_register(struct eth_driver *eth_drv)
        rte_eal_pci_register(&eth_drv->pci_drv);
 }
 
+int
+rte_eth_dev_socket_id(uint8_t port_id)
+{
+       if (port_id >= nb_ports)
+               return -1;
+       return rte_eth_devices[port_id].pci_dev->numa_node;
+}
+
 uint8_t
 rte_eth_dev_count(void)
 {
@@ -1381,13 +1390,102 @@ rte_eth_dev_flow_ctrl_set(uint8_t port_id, struct rte_eth_fc_conf *fc_conf)
        }
 
        dev = &rte_eth_devices[port_id];
+       FUNC_PTR_OR_ERR_RET(*dev->dev_ops->flow_ctrl_set, -ENOTSUP);
+       return (*dev->dev_ops->flow_ctrl_set)(dev, fc_conf);
+}
+
+int
+rte_eth_dev_priority_flow_ctrl_set(uint8_t port_id, struct rte_eth_pfc_conf *pfc_conf)
+{
+       struct rte_eth_dev *dev;
+
+       if (port_id >= nb_ports) {
+               PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+               return (-ENODEV);
+       }
+
+       if (pfc_conf->priority > (ETH_DCB_NUM_USER_PRIORITIES - 1)) {
+               PMD_DEBUG_TRACE("Invalid priority, only 0-7 allowed\n");
+               return (-EINVAL);
+       }
 
+       dev = &rte_eth_devices[port_id];
        /* High water, low water validation are device specific */
-       FUNC_PTR_OR_ERR_RET(*dev->dev_ops->flow_ctrl_set, -ENOTSUP);
-       if  (*dev->dev_ops->flow_ctrl_set)
-               return (*dev->dev_ops->flow_ctrl_set)(dev, fc_conf);
+       if  (*dev->dev_ops->priority_flow_ctrl_set)
+               return (*dev->dev_ops->priority_flow_ctrl_set)(dev, pfc_conf);
+       return (-ENOTSUP);
+}
+
+int
+rte_eth_dev_rss_reta_update(uint8_t port_id, struct rte_eth_rss_reta *reta_conf)
+{
+       struct rte_eth_dev *dev;
+       uint8_t i,j;
+
+       if (port_id >= nb_ports) {
+               PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+               return (-ENODEV);
+       }
+
+       /* Invalid mask bit(s) setting */
+       if ((reta_conf->mask_lo == 0) && (reta_conf->mask_hi == 0)) {
+               PMD_DEBUG_TRACE("Invalid update mask bits for port=%d\n",port_id);
+               return (-EINVAL);
+       }
+
+       if (reta_conf->mask_lo != 0) {
+               for (i = 0; i < ETH_RSS_RETA_NUM_ENTRIES/2; i++) {
+                       if ((reta_conf->mask_lo & (1ULL << i)) &&
+                               (reta_conf->reta[i] >= ETH_RSS_RETA_MAX_QUEUE)) {
+                               PMD_DEBUG_TRACE("RETA hash index output"
+                                       "configration for port=%d,invalid"
+                                       "queue=%d\n",port_id,reta_conf->reta[i]);
+
+                               return (-EINVAL);
+                       } 
+               }
+       }
+
+       if (reta_conf->mask_hi != 0) {
+               for (i = 0; i< ETH_RSS_RETA_NUM_ENTRIES/2; i++) {       
+                       j = (uint8_t)(i + ETH_RSS_RETA_NUM_ENTRIES/2);
+
+                       /* Check if the max entry >= 128 */
+                       if ((reta_conf->mask_hi & (1ULL << i)) && 
+                               (reta_conf->reta[j] >= ETH_RSS_RETA_MAX_QUEUE)) {
+                               PMD_DEBUG_TRACE("RETA hash index output"
+                                       "configration for port=%d,invalid"
+                                       "queue=%d\n",port_id,reta_conf->reta[j]);
+
+                               return (-EINVAL);
+                       }
+               }
+       }
+
+       dev = &rte_eth_devices[port_id];
 
-       return -ENOTSUP;
+       FUNC_PTR_OR_ERR_RET(*dev->dev_ops->reta_update, -ENOTSUP);
+       return (*dev->dev_ops->reta_update)(dev, reta_conf);
+}
+
+int 
+rte_eth_dev_rss_reta_query(uint8_t port_id, struct rte_eth_rss_reta *reta_conf)
+{
+       struct rte_eth_dev *dev;
+       
+       if (port_id >= nb_ports) {
+               PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+               return (-ENODEV);
+       }
+
+       if((reta_conf->mask_lo == 0) && (reta_conf->mask_hi == 0)) {
+               PMD_DEBUG_TRACE("Invalid update mask bits for the port=%d\n",port_id);
+               return (-EINVAL);
+       }
+
+       dev = &rte_eth_devices[port_id];
+       FUNC_PTR_OR_ERR_RET(*dev->dev_ops->reta_query, -ENOTSUP);
+       return (*dev->dev_ops->reta_query)(dev, reta_conf);
 }
 
 int
@@ -1551,6 +1649,20 @@ rte_eth_tx_burst(uint8_t port_id, uint16_t queue_id,
        return (*dev->tx_pkt_burst)(dev->data->tx_queues[queue_id],
                                                tx_pkts, nb_pkts);
 }
+
+uint32_t
+rte_eth_rx_queue_count(uint8_t port_id, uint16_t queue_id)
+{
+       struct rte_eth_dev *dev;
+
+       if (port_id >= nb_ports) {
+               PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+               return 0;
+       }
+       dev = &rte_eth_devices[port_id];
+       FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_count, -ENOTSUP);
+       return (*dev->dev_ops->rx_queue_count)(dev, queue_id);  
+}
 #endif
 
 int
@@ -1558,40 +1670,38 @@ rte_eth_dev_callback_register(uint8_t port_id,
                        enum rte_eth_event_type event,
                        rte_eth_dev_cb_fn cb_fn, void *cb_arg)
 {
-       int ret = -1;
        struct rte_eth_dev *dev;
-       struct rte_eth_dev_callback *user_cb = NULL;
+       struct rte_eth_dev_callback *user_cb;
 
        if (!cb_fn)
-               return -1;
+               return (-EINVAL);
        if (port_id >= nb_ports) {
                PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
-               return -1;
+               return (-EINVAL);
        }
+
        dev = &rte_eth_devices[port_id];
        rte_spinlock_lock(&rte_eth_dev_cb_lock);
+
        TAILQ_FOREACH(user_cb, &(dev->callbacks), next) {
                if (user_cb->cb_fn == cb_fn &&
                        user_cb->cb_arg == cb_arg &&
                        user_cb->event == event) {
-                       ret = 0;
-                       goto out;
+                       break;
                }
        }
-       user_cb = rte_malloc("INTR_USER_CALLBACK",
-               sizeof(struct rte_eth_dev_callback), 0);
-       if (!user_cb)
-               goto out;
-       user_cb->cb_fn = cb_fn;
-       user_cb->cb_arg = cb_arg;
-       user_cb->event = event;
-       TAILQ_INSERT_TAIL(&(dev->callbacks), user_cb, next);
-       ret = 0;
 
-out:
-       rte_spinlock_unlock(&rte_eth_dev_cb_lock);
+       /* create a new callback. */
+       if (user_cb == NULL && (user_cb = rte_zmalloc("INTR_USER_CALLBACK",
+                       sizeof(struct rte_eth_dev_callback), 0)) != NULL) {
+               user_cb->cb_fn = cb_fn;
+               user_cb->cb_arg = cb_arg;
+               user_cb->event = event;
+               TAILQ_INSERT_TAIL(&(dev->callbacks), user_cb, next);
+       }
 
-       return ret;
+       rte_spinlock_unlock(&rte_eth_dev_cb_lock);
+       return ((user_cb == NULL) ? -ENOMEM : 0);
 }
 
 int
@@ -1599,38 +1709,51 @@ rte_eth_dev_callback_unregister(uint8_t port_id,
                        enum rte_eth_event_type event,
                        rte_eth_dev_cb_fn cb_fn, void *cb_arg)
 {
-       int ret = -1;
+       int ret;
        struct rte_eth_dev *dev;
-       struct rte_eth_dev_callback *cb_lst = NULL;
+       struct rte_eth_dev_callback *cb, *next;
 
        if (!cb_fn)
-               return -1;
+               return (-EINVAL);
        if (port_id >= nb_ports) {
                PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
-               return -1;
+               return (-EINVAL);
        }
+
        dev = &rte_eth_devices[port_id];
        rte_spinlock_lock(&rte_eth_dev_cb_lock);
-       TAILQ_FOREACH(cb_lst, &(dev->callbacks), next) {
-               if (cb_lst->cb_fn != cb_fn || cb_lst->event != event)
+
+       ret = 0;
+       for (cb = TAILQ_FIRST(&dev->callbacks); cb != NULL; cb = next) {
+
+               next = TAILQ_NEXT(cb, next);
+
+               if (cb->cb_fn != cb_fn || cb->event != event ||
+                               (cb->cb_arg != (void *)-1 &&
+                               cb->cb_arg != cb_arg))
                        continue;
-               if (cb_lst->cb_arg == (void *)-1 ||
-                               cb_lst->cb_arg == cb_arg) {
-                       TAILQ_REMOVE(&(dev->callbacks), cb_lst, next);
-                       rte_free(cb_lst);
-                       ret = 0;
+
+               /*
+                * if this callback is not executing right now,
+                * then remove it.
+                */
+               if (cb->active == 0) {
+                       TAILQ_REMOVE(&(dev->callbacks), cb, next);
+                       rte_free(cb);
+               } else {
+                       ret = -EAGAIN;
                }
        }
 
        rte_spinlock_unlock(&rte_eth_dev_cb_lock);
-
-       return ret;
+       return (ret);
 }
 
 void
-_rte_eth_dev_callback_process(struct rte_eth_dev *dev, enum rte_eth_event_type event)
+_rte_eth_dev_callback_process(struct rte_eth_dev *dev,
+       enum rte_eth_event_type event)
 {
-       struct rte_eth_dev_callback *cb_lst = NULL;
+       struct rte_eth_dev_callback *cb_lst;
        struct rte_eth_dev_callback dev_cb;
 
        rte_spinlock_lock(&rte_eth_dev_cb_lock);
@@ -1638,11 +1761,12 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev, enum rte_eth_event_type e
                if (cb_lst->cb_fn == NULL || cb_lst->event != event)
                        continue;
                dev_cb = *cb_lst;
+               cb_lst->active = 1;
                rte_spinlock_unlock(&rte_eth_dev_cb_lock);
                dev_cb.cb_fn(dev->data->port_id, dev_cb.event,
                                                dev_cb.cb_arg);
                rte_spinlock_lock(&rte_eth_dev_cb_lock);
+               cb_lst->active = 0;
        }
        rte_spinlock_unlock(&rte_eth_dev_cb_lock);
 }
-