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| author | Paul Durrant <Paul.Durrant@citrix.com> | 2016-05-13 09:37:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-16 13:35:56 -0400 |
| commit | c2d09fde7299f68f29e84fe5a415d5c1a7abae75 (patch) | |
| tree | 5d60ff79f437dd98e068056232639d710aa4245c /drivers | |
| parent | f07f989338587bc2b202f6e3c8e8468c450bd6a2 (diff) | |
| download | linux-c2d09fde7299f68f29e84fe5a415d5c1a7abae75.tar.bz2 | |
xen-netback: use hash value from the frontend
My recent patch to include/xen/interface/io/netif.h defines a new extra
info type that can be used to pass hash values between backend and guest
frontend.
This patch adds code to xen-netback to use the value in a hash extra
info fragment passed from the guest frontend in a transmit-side
(i.e. netback receive side) packet to set the skb hash accordingly.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 9d6bd862f3c1..edbae0b1e8f0 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1510,6 +1510,33 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue, } } + if (extras[XEN_NETIF_EXTRA_TYPE_HASH - 1].type) { + struct xen_netif_extra_info *extra; + enum pkt_hash_types type = PKT_HASH_TYPE_NONE; + + extra = &extras[XEN_NETIF_EXTRA_TYPE_HASH - 1]; + + switch (extra->u.hash.type) { + case _XEN_NETIF_CTRL_HASH_TYPE_IPV4: + case _XEN_NETIF_CTRL_HASH_TYPE_IPV6: + type = PKT_HASH_TYPE_L3; + break; + + case _XEN_NETIF_CTRL_HASH_TYPE_IPV4_TCP: + case _XEN_NETIF_CTRL_HASH_TYPE_IPV6_TCP: + type = PKT_HASH_TYPE_L4; + break; + + default: + break; + } + + if (type != PKT_HASH_TYPE_NONE) + skb_set_hash(skb, + *(u32 *)extra->u.hash.value, + type); + } + XENVIF_TX_CB(skb)->pending_idx = pending_idx; __skb_put(skb, data_len); |