From 82cada22a0bbec6a7afb573ef5fb6c512aaa2739 Mon Sep 17 00:00:00 2001 From: Paul Durrant Date: Wed, 16 Oct 2013 17:50:32 +0100 Subject: xen-netback: enable IPv6 TCP GSO to the guest This patch adds code to handle SKB_GSO_TCPV6 skbs and construct appropriate extra or prefix segments to pass the large packet to the frontend. New xenstore flags, feature-gso-tcpv6 and feature-gso-tcpv6-prefix, are sampled to determine if the frontend is capable of handling such packets. Signed-off-by: Paul Durrant Cc: Wei Liu Cc: David Vrabel Cc: Ian Campbell Signed-off-by: David S. Miller --- drivers/net/xen-netback/common.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/net/xen-netback/common.h') diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index b4a9a3c844b2..55b8dec86233 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -87,9 +87,13 @@ struct pending_tx_info { struct xenvif_rx_meta { int id; int size; + int gso_type; int gso_size; }; +#define GSO_BIT(type) \ + (1 << XEN_NETIF_GSO_TYPE_ ## type) + /* Discriminate from any valid pending_idx value. */ #define INVALID_PENDING_IDX 0xFFFF @@ -150,9 +154,10 @@ struct xenvif { u8 fe_dev_addr[6]; /* Frontend feature information. */ + int gso_mask; + int gso_prefix_mask; + u8 can_sg:1; - u8 gso:1; - u8 gso_prefix:1; u8 ip_csum:1; u8 ipv6_csum:1; -- cgit v1.2.3