tls: rx: strp: set the skb->len of detached / CoW'ed skbs

alloc_skb_with_frags() fills in page frag sizes but does not
set skb->len and skb->data_len. Set those correctly otherwise
device offload will most likely generate an empty skb and
hit the BUG() at the end of __skb_nsg().

Fixes: 84c61fe1a75b ("tls: rx: do not use the standard strparser")
Tested-by: Shai Amiram <samiram@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tls/tls_strp.c b/net/tls/tls_strp.c
index 955ac3e..24016c8 100644 (file)
--- a/net/tls/tls_strp.c
+++ b/net/tls/tls_strp.c
@@ -56,6 +56,8 @@ static struct sk_buff *tls_strp_msg_make_copy(struct tls_strparser *strp)
                offset += skb_frag_size(frag);
        }
 
+       skb->len = strp->stm.full_len;
+       skb->data_len = strp->stm.full_len;
        skb_copy_header(skb, strp->anchor);
        rxm = strp_msg(skb);
        rxm->offset = 0;