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-rw-r--r--net/core/sock.c15
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) {