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Diffstat (limited to 'net/openvswitch/datapath.c')
-rw-r--r--net/openvswitch/datapath.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 2088619c03f0..8ce1f773378d 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -350,7 +350,8 @@ static size_t upcall_msg_size(const struct dp_upcall_info *upcall_info,
size_t size = NLMSG_ALIGN(sizeof(struct ovs_header))
+ nla_total_size(hdrlen) /* OVS_PACKET_ATTR_PACKET */
+ nla_total_size(ovs_key_attr_size()) /* OVS_PACKET_ATTR_KEY */
- + nla_total_size(sizeof(unsigned int)); /* OVS_PACKET_ATTR_LEN */
+ + nla_total_size(sizeof(unsigned int)) /* OVS_PACKET_ATTR_LEN */
+ + nla_total_size(sizeof(u64)); /* OVS_PACKET_ATTR_HASH */
/* OVS_PACKET_ATTR_USERDATA */
if (upcall_info->userdata)
@@ -393,6 +394,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
size_t len;
unsigned int hlen;
int err, dp_ifindex;
+ u64 hash;
dp_ifindex = get_dpifindex(dp);
if (!dp_ifindex)
@@ -504,6 +506,19 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
pad_packet(dp, user_skb);
}
+ /* Add OVS_PACKET_ATTR_HASH */
+ hash = skb_get_hash_raw(skb);
+ if (skb->sw_hash)
+ hash |= OVS_PACKET_HASH_SW_BIT;
+
+ if (skb->l4_hash)
+ hash |= OVS_PACKET_HASH_L4_BIT;
+
+ if (nla_put(user_skb, OVS_PACKET_ATTR_HASH, sizeof (u64), &hash)) {
+ err = -ENOBUFS;
+ goto out;
+ }
+
/* Only reserve room for attribute header, packet data is added
* in skb_zerocopy() */
if (!(nla = nla_reserve(user_skb, OVS_PACKET_ATTR_PACKET, 0))) {
@@ -543,6 +558,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
struct datapath *dp;
struct vport *input_vport;
u16 mru = 0;
+ u64 hash;
int len;
int err;
bool log = !a[OVS_PACKET_ATTR_PROBE];
@@ -568,6 +584,14 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
}
OVS_CB(packet)->mru = mru;
+ if (a[OVS_PACKET_ATTR_HASH]) {
+ hash = nla_get_u64(a[OVS_PACKET_ATTR_HASH]);
+
+ __skb_set_hash(packet, hash & 0xFFFFFFFFULL,
+ !!(hash & OVS_PACKET_HASH_SW_BIT),
+ !!(hash & OVS_PACKET_HASH_L4_BIT));
+ }
+
/* Build an sw_flow for sending this packet. */
flow = ovs_flow_alloc();
err = PTR_ERR(flow);