netinet/tcp.h: add tcp zerocopy related changes from linux v5.11
see
linux commit 18fb76ed53865c1b5d5f0157b1b825704590beb5
net-zerocopy: Copy straggler unaligned data for TCP Rx. zerocopy.
linux commit 94ab9eb9b234ddf23af04a4bc7e8db68e67b8778
net-zerocopy: Defer vm zap unless actually needed.
diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index b7b997f..30f2023 100644
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -281,12 +281,17 @@
uint32_t rcv_wup;
};
+#define TCP_RECEIVE_ZEROCOPY_FLAG_TLB_CLEAN_HINT 0x1
+
struct tcp_zerocopy_receive {
uint64_t address;
uint32_t length;
uint32_t recv_skip_hint;
uint32_t inq;
int32_t err;
+ uint64_t copybuf_address;
+ int32_t copybuf_len;
+ uint32_t flags;
};
#endif
