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path: root/drivers/net/ethernet/ibm/ibmvnic.c
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Diffstat (limited to 'drivers/net/ethernet/ibm/ibmvnic.c')
-rw-r--r--drivers/net/ethernet/ibm/ibmvnic.c43
1 files changed, 34 insertions, 9 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 9198e6bd5160..5f11b4dc95d2 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -404,7 +404,7 @@ static int ibmvnic_open(struct net_device *netdev)
send_map_query(adapter);
for (i = 0; i < rxadd_subcrqs; i++) {
init_rx_pool(adapter, &adapter->rx_pool[i],
- IBMVNIC_BUFFS_PER_POOL, i,
+ adapter->req_rx_add_entries_per_subcrq, i,
be64_to_cpu(size_array[i]), 1);
if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
dev_err(dev, "Couldn't alloc rx pool\n");
@@ -419,23 +419,23 @@ static int ibmvnic_open(struct net_device *netdev)
for (i = 0; i < tx_subcrqs; i++) {
tx_pool = &adapter->tx_pool[i];
tx_pool->tx_buff =
- kcalloc(adapter->max_tx_entries_per_subcrq,
+ kcalloc(adapter->req_tx_entries_per_subcrq,
sizeof(struct ibmvnic_tx_buff), GFP_KERNEL);
if (!tx_pool->tx_buff)
goto tx_pool_alloc_failed;
if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
- adapter->max_tx_entries_per_subcrq *
+ adapter->req_tx_entries_per_subcrq *
adapter->req_mtu))
goto tx_ltb_alloc_failed;
tx_pool->free_map =
- kcalloc(adapter->max_tx_entries_per_subcrq,
+ kcalloc(adapter->req_tx_entries_per_subcrq,
sizeof(int), GFP_KERNEL);
if (!tx_pool->free_map)
goto tx_fm_alloc_failed;
- for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++)
+ for (j = 0; j < adapter->req_tx_entries_per_subcrq; j++)
tx_pool->free_map[j] = j;
tx_pool->consumer_index = 0;
@@ -705,6 +705,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
struct device *dev = &adapter->vdev->dev;
struct ibmvnic_tx_buff *tx_buff = NULL;
+ struct ibmvnic_sub_crq_queue *tx_scrq;
struct ibmvnic_tx_pool *tx_pool;
unsigned int tx_send_failed = 0;
unsigned int tx_map_failed = 0;
@@ -724,6 +725,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
int ret = 0;
tx_pool = &adapter->tx_pool[queue_num];
+ tx_scrq = adapter->tx_scrq[queue_num];
txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
be32_to_cpu(adapter->login_rsp_buf->
@@ -744,7 +746,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
tx_pool->consumer_index =
(tx_pool->consumer_index + 1) %
- adapter->max_tx_entries_per_subcrq;
+ adapter->req_tx_entries_per_subcrq;
tx_buff = &tx_pool->tx_buff[index];
tx_buff->skb = skb;
@@ -817,7 +819,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
if (tx_pool->consumer_index == 0)
tx_pool->consumer_index =
- adapter->max_tx_entries_per_subcrq - 1;
+ adapter->req_tx_entries_per_subcrq - 1;
else
tx_pool->consumer_index--;
@@ -826,6 +828,14 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
ret = NETDEV_TX_BUSY;
goto out;
}
+
+ atomic_inc(&tx_scrq->used);
+
+ if (atomic_read(&tx_scrq->used) >= adapter->req_tx_entries_per_subcrq) {
+ netdev_info(netdev, "Stopping queue %d\n", queue_num);
+ netif_stop_subqueue(netdev, queue_num);
+ }
+
tx_packets++;
tx_bytes += skb->len;
txq->trans_start = jiffies;
@@ -1213,6 +1223,7 @@ static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
scrq->adapter = adapter;
scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
scrq->cur = 0;
+ atomic_set(&scrq->used, 0);
scrq->rx_skb_top = NULL;
spin_lock_init(&scrq->lock);
@@ -1355,14 +1366,28 @@ restart_loop:
DMA_TO_DEVICE);
}
- if (txbuff->last_frag)
+ if (txbuff->last_frag) {
+ atomic_dec(&scrq->used);
+
+ if (atomic_read(&scrq->used) <=
+ (adapter->req_tx_entries_per_subcrq / 2) &&
+ netif_subqueue_stopped(adapter->netdev,
+ txbuff->skb)) {
+ netif_wake_subqueue(adapter->netdev,
+ scrq->pool_index);
+ netdev_dbg(adapter->netdev,
+ "Started queue %d\n",
+ scrq->pool_index);
+ }
+
dev_kfree_skb_any(txbuff->skb);
+ }
adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
producer_index] = index;
adapter->tx_pool[pool].producer_index =
(adapter->tx_pool[pool].producer_index + 1) %
- adapter->max_tx_entries_per_subcrq;
+ adapter->req_tx_entries_per_subcrq;
}
/* remove tx_comp scrq*/
next->tx_comp.first = 0;