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-rw-r--r--net/mptcp/protocol.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index d222eea11922..f855c954a8ff 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -190,6 +190,16 @@ static inline struct mptcp_data_frag *mptcp_rtx_tail(const struct sock *sk)
return list_last_entry(&msk->rtx_queue, struct mptcp_data_frag, list);
}
+static inline struct mptcp_data_frag *mptcp_rtx_head(const struct sock *sk)
+{
+ struct mptcp_sock *msk = mptcp_sk(sk);
+
+ if (list_empty(&msk->rtx_queue))
+ return NULL;
+
+ return list_first_entry(&msk->rtx_queue, struct mptcp_data_frag, list);
+}
+
struct mptcp_subflow_request_sock {
struct tcp_request_sock sk;
u16 mp_capable : 1,