[Minios-devel] [UNIKRAFT PATCH v4 7/8] lib/uknetdev: Add driver encapsulation for rx & tx

[Sharan Santhanam <sharan.santhanam@xxxxxxxxx>]

The patch provides the option for the network driver to reserve headroom
separately for transmission and reception part of a net device.

Signed-off-by: Sharan Santhanam <sharan.santhanam@xxxxxxxxx>
---
 lib/uknetdev/include/uk/netdev_core.h | 3 ++-
 plat/drivers/virtio/virtio_net.c      | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/uknetdev/include/uk/netdev_core.h 
b/lib/uknetdev/include/uk/netdev_core.h
index b14a9c9..b77c45a 100644
--- a/lib/uknetdev/include/uk/netdev_core.h
+++ b/lib/uknetdev/include/uk/netdev_core.h
@@ -85,7 +85,8 @@ struct uk_netdev_info {
        uint16_t max_tx_queues;
        int in_queue_pairs; /**< If true, allocate queues in pairs. */
        uint16_t max_mtu;   /**< Maximum supported MTU size. */
-       uint16_t nb_encap;  /**< Number of bytes required as headroom for tx. */
+       uint16_t nb_encap_tx;  /**< Number of bytes required as headroom for 
tx. */
+       uint16_t nb_encap_rx;  /**< Number of bytes required as headroom for 
rx. */
 };
 
 /**
diff --git a/plat/drivers/virtio/virtio_net.c b/plat/drivers/virtio/virtio_net.c
index 53c0c93..dfabfcc 100644
--- a/plat/drivers/virtio/virtio_net.c
+++ b/plat/drivers/virtio/virtio_net.c
@@ -688,6 +688,8 @@ static void virtio_net_info_get(struct uk_netdev *dev,
 
        dev_info->max_rx_queues = vndev->max_vqueue_pairs;
        dev_info->max_tx_queues = vndev->max_vqueue_pairs;
+       dev_info->nb_encap_tx = sizeof(struct virtio_net_hdr);
+       dev_info->nb_encap_rx = sizeof(struct virtio_net_rx_hdr);
 }
 
 static int virtio_net_start(struct uk_netdev *n)
-- 
2.7.4


_______________________________________________
Minios-devel mailing list
Minios-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/minios-devel