Changeset b085bbaa in mainline for uspace/drv/nic/virtio-net/virtio-net.c

Timestamp:

2018-05-24T18:43:24Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

211b17a1

Parents:

cede6f8

git-author:

Jakub Jermar <jakub@…> (2018-05-24 18:43:19)

git-committer:

Jakub Jermar <jakub@…> (2018-05-24 18:43:24)

Message:

Organize the TX and CT buffers in free lists

File:

• uspace/drv/nic/virtio-net/virtio-net.c (modified) (2 diffs)

uspace/drv/nic/virtio-net/virtio-net.c

@@ -90 +90 @@
 }
 
+static void virtio_net_create_buf_free_list(virtio_dev_t *vdev, uint16_t num,
+    uint16_t size, uint16_t *head)
+{
+        for (unsigned i = 0; i < size; i++) {
+                virtio_virtq_set_desc(vdev, num, i, 0, 0,
+                    VIRTQ_DESC_F_NEXT, (i + 1 == size) ? -1U : i + 1);
+        }
+        *head = 0;
+}
+
 static errno_t virtio_net_initialize(ddf_dev_t *dev)
 {
@@ -181 +191 @@
 
         /*
+         * Put all TX and CT buffers on a free list
+         */
+        virtio_net_create_buf_free_list(vdev, TX_QUEUE_1, TX_BUFFERS,
+            &virtio_net->tx_free_head);
+        virtio_net_create_buf_free_list(vdev, CT_QUEUE_1, CT_BUFFERS,
+            &virtio_net->ct_free_head);
+
+        /*
          * Read the MAC address
          */