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| author | Willem de Bruijn <willemb@google.com> | 2018-04-26 19:42:21 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-26 21:09:12 +0200 |
| commit | 83aa025f535f76733e334e3d2a4d8577c8441a7e (patch) | |
| tree | 04dae9f8c0b71ec90612cac1ca947272447bde56 /Documentation | |
| parent | udp: add gso segment cmsg (diff) | |
| download | linux-83aa025f535f76733e334e3d2a4d8577c8441a7e.tar.xz linux-83aa025f535f76733e334e3d2a4d8577c8441a7e.zip | |
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')
| -rw-r--r-- | Documentation/networking/netdev-features.txt | 7 |
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 |