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-rw-r--r--include/net/af_vsock.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h
index b01cf9ac2437..e302c0e804d0 100644
--- a/include/net/af_vsock.h
+++ b/include/net/af_vsock.h
@@ -177,6 +177,9 @@ struct vsock_transport {
/* Read a single skb */
int (*read_skb)(struct vsock_sock *, skb_read_actor_t);
+
+ /* Zero-copy. */
+ bool (*msgzerocopy_allow)(void);
};
/**** CORE ****/
@@ -241,4 +244,8 @@ static inline void __init vsock_bpf_build_proto(void)
{}
#endif
+static inline bool vsock_msgzerocopy_allow(const struct vsock_transport *t)
+{
+ return t->msgzerocopy_allow && t->msgzerocopy_allow();
+}
#endif /* __AF_VSOCK_H__ */