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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 /drivers/net/xen-netback | |
| parent | 7365bcfa32d2c9d212c41d52ff3509d70b6a3466 (diff) | |
| download | linux-a94685876859be30446357db6d6c4a9c951305b4.tar.gz linux-a94685876859be30446357db6d6c4a9c951305b4.tar.bz2 linux-a94685876859be30446357db6d6c4a9c951305b4.zip | |
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 'drivers/net/xen-netback')
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 11 | ||||
| -rw-r--r-- | drivers/net/xen-netback/xenbus.c | 7 |
2 files changed, 15 insertions, 3 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 4271f8d1da7a..0e327d46a139 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1098,15 +1098,20 @@ static int xenvif_set_skb_gso(struct xenvif *vif, return -EINVAL; } - /* Currently only TCPv4 S.O. is supported. */ - if (gso->u.gso.type != XEN_NETIF_GSO_TYPE_TCPV4) { + switch (gso->u.gso.type) { + case XEN_NETIF_GSO_TYPE_TCPV4: + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; + break; + case XEN_NETIF_GSO_TYPE_TCPV6: + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; + break; + default: netdev_err(vif->dev, "Bad GSO type %d.\n", gso->u.gso.type); xenvif_fatal_tx_err(vif); return -EINVAL; } skb_shinfo(skb)->gso_size = gso->u.gso.size; - skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; /* Header must be checked, and gso_segs computed. */ skb_shinfo(skb)->gso_type |= SKB_GSO_DODGY; diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index 108e7523017a..02cb00bebdc9 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -105,6 +105,13 @@ static int netback_probe(struct xenbus_device *dev, goto abort_transaction; } + err = xenbus_printf(xbt, dev->nodename, "feature-gso-tcpv6", + "%d", sg); + if (err) { + message = "writing feature-gso-tcpv6"; + goto abort_transaction; + } + /* We support partial checksum setup for IPv6 packets */ err = xenbus_printf(xbt, dev->nodename, "feature-ipv6-csum-offload", |