1 files changed, 15 insertions, 0 deletions

diff --git a/net/core/sock.c b/net/core/sock.c
index 73a8018029a..043bdc05d21 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -979,6 +979,21 @@ out:
 
 EXPORT_SYMBOL_GPL(sk_clone);
 
+void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
+{
+        __sk_dst_set(sk, dst);
+        sk->sk_route_caps = dst->dev->features;
+        if (sk->sk_route_caps & NETIF_F_GSO)
+                sk->sk_route_caps |= NETIF_F_GSO_MASK;
+        if (sk_can_gso(sk)) {
+                if (dst->header_len)
+                        sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+                else
+                        sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM;
+        }
+}
+EXPORT_SYMBOL_GPL(sk_setup_caps);
+
 void __init sk_init(void)
 {
         if (num_physpages <= 4096) {