@@ -1341,6 +1341,28 @@ void xenvif_mcast_addr_list_free(struct xenvif *vif)
}
}
+static void xenvif_set_skb_hash(struct xenvif *vif,
+ struct sk_buff *skb,
+ struct xen_netif_extra_info *extra)
+{
+ u32 hash = *(u32 *)extra->u.toeplitz.value;
+ enum pkt_hash_types type = PKT_HASH_TYPE_NONE;
+
+ switch (extra->u.toeplitz.type) {
+ case _XEN_NETIF_CTRL_TOEPLITZ_HASH_IPV4:
+ case _XEN_NETIF_CTRL_TOEPLITZ_HASH_IPV6:
+ type = PKT_HASH_TYPE_L3;
+ break;
+
+ case _XEN_NETIF_CTRL_TOEPLITZ_HASH_IPV4_TCP:
+ case _XEN_NETIF_CTRL_TOEPLITZ_HASH_IPV6_TCP:
+ type = PKT_HASH_TYPE_L4;
+ break;
+ }
+
+ skb_set_hash(skb, hash, type);
+}
+
static void xenvif_tx_build_gops(struct xenvif_queue *queue,
int budget,
unsigned *copy_ops,
@@ -1502,6 +1524,13 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue,
}
}
+ if (extras[XEN_NETIF_EXTRA_TYPE_TOEPLITZ - 1].type) {
+ struct xen_netif_extra_info *extra;
+
+ extra = &extras[XEN_NETIF_EXTRA_TYPE_TOEPLITZ - 1];
+ xenvif_set_skb_hash(queue->vif, skb, extra);
+ }
+
XENVIF_TX_CB(skb)->pending_idx = pending_idx;
__skb_put(skb, data_len);
This patch adds code to xen-netback to use the value in a toeplitz hash extra info fragment passed from the VM frontend in a transmit-side packet to set the skb hash accordingly. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> --- drivers/net/xen-netback/netback.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+)