summaryrefslogtreecommitdiff
path: root/Documentation/networking/netdev-features.txt
diff options
context:
space:
mode:
authorWillem de Bruijn <willemb@google.com>2018-04-26 13:42:21 -0400
committerDavid S. Miller <davem@davemloft.net>2018-04-26 15:09:12 -0400
commit83aa025f535f76733e334e3d2a4d8577c8441a7e (patch)
tree04dae9f8c0b71ec90612cac1ca947272447bde56 /Documentation/networking/netdev-features.txt
parent2e8de8576343ab540856082916bfb84d17288b08 (diff)
udp: add gso support to virtual devices
Virtual devices such as tunnels and bonding can handle large packets. Only segment packets when reaching a physical or loopback device. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/netdev-features.txt')
-rw-r--r--Documentation/networking/netdev-features.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/networking/netdev-features.txt b/Documentation/networking/netdev-features.txt
index c77f9d57eb91..c4a54c162547 100644
--- a/Documentation/networking/netdev-features.txt
+++ b/Documentation/networking/netdev-features.txt
@@ -113,6 +113,13 @@ whatever headers there might be.
NETIF_F_TSO_ECN means that hardware can properly split packets with CWR bit
set, be it TCPv4 (when NETIF_F_TSO is enabled) or TCPv6 (NETIF_F_TSO6).
+ * Transmit UDP segmentation offload
+
+NETIF_F_GSO_UDP_GSO_L4 accepts a single UDP header with a payload that exceeds
+gso_size. On segmentation, it segments the payload on gso_size boundaries and
+replicates the network and UDP headers (fixing up the last one if less than
+gso_size).
+
* Transmit DMA from high memory
On platforms where this is relevant, NETIF_F_HIGHDMA signals that