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| author | Paul Durrant <Paul.Durrant@citrix.com> | 2013-10-16 17:50:31 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-17 15:35:17 -0400 |
| commit | a94685876859be30446357db6d6c4a9c951305b4 (patch) | |
| tree | 99fe7fd8031b7e137c1474cafdf40e36e0c6c2d8 /include/xen/interface | |
| parent | 7365bcfa32d2c9d212c41d52ff3509d70b6a3466 (diff) | |
| download | linux-a94685876859be30446357db6d6c4a9c951305b4.tar.gz | |
xen-netback: handle IPv6 TCP GSO packets from the guest
This patch adds a xenstore feature flag, festure-gso-tcpv6, to advertise that netback can handle IPv6 TCP GSO packets. It creates SKB_GSO_TCPV6 skbs if the frontend passes an extra segment with the new type XEN_NETIF_GSO_TYPE_TCPV6 added to netif.h. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/xen/interface')
| -rw-r--r-- | include/xen/interface/io/netif.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/xen/interface/io/netif.h b/include/xen/interface/io/netif.h index c9e81849fcd7..5e766ebe77f6 100644 --- a/include/xen/interface/io/netif.h +++ b/include/xen/interface/io/netif.h @@ -58,6 +58,13 @@ */ /* + * "feature-gso-tcpv4" and "feature-gso-tcpv6" advertise the capability to + * handle large TCP packets (in IPv4 or IPv6 form respectively). Neither + * frontends nor backends are assumed to be capable unless the flags are + * present. + */ + +/* * This is the 'wire' format for packets: * Request 1: xen_netif_tx_request -- XEN_NETTXF_* (any flags) * [Request 2: xen_netif_extra_info] (only if request 1 has XEN_NETTXF_extra_info) @@ -102,8 +109,9 @@ struct xen_netif_tx_request { #define _XEN_NETIF_EXTRA_FLAG_MORE (0) #define XEN_NETIF_EXTRA_FLAG_MORE (1U<<_XEN_NETIF_EXTRA_FLAG_MORE) -/* GSO types - only TCPv4 currently supported. */ +/* GSO types */ #define XEN_NETIF_GSO_TYPE_TCPV4 (1) +#define XEN_NETIF_GSO_TYPE_TCPV6 (2) /* * This structure needs to fit within both netif_tx_request and |