[RFC PATCH mptcp-next v5 09/10] These 2 functions are from protocol.c. Cannot import as not in protocol.h. Should I leave them like this? Or add prototypes in protocol.h and reuse?

[Dmytro Shytyi <dmytro@shytyi.net>]

These 2 functions are from
protocol.c. Cannot import as not in protocol.h. Should I leave them like
this? Or add prototypes in protocol.h and reuse?

Signed-off-by: Dmytro Shytyi <dmytro@shytyi.net>
---
 net/mptcp/fastopen.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/net/mptcp/fastopen.c b/net/mptcp/fastopen.c
index fd0e4b7c8f68..6a4cb7a28871 100644
--- a/net/mptcp/fastopen.c
+++ b/net/mptcp/fastopen.c
@@ -102,6 +102,25 @@ void mptcp_treat_3d_ack_fastopen(struct mptcp_sock *msk, struct mptcp_subflow_co
 	}
 }
 
+static void mptcp_rmem_uncharge(struct sock *sk, int size)
+{
+	struct mptcp_sock *msk = mptcp_sk(sk);
+	int reclaimable;
+
+	msk->rmem_fwd_alloc += size;
+	reclaimable = msk->rmem_fwd_alloc - sk_unused_reserved_mem(sk);
+
+}
+
+static void mptcp_rfree(struct sk_buff *skb)
+{
+	unsigned int len = skb->truesize;
+	struct sock *sk = skb->sk;
+
+	atomic_sub(len, &sk->sk_rmem_alloc);
+	mptcp_rmem_uncharge(sk, len);
+}
+
 void mptcp_fastopen_add_skb(struct sock *sk, struct sk_buff *skb, struct request_sock *req)
 {
 	struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
-- 
2.25.1