Lawrence Brakmo b75803d52a
tcp: refactor struct tcp_skb_cb ...
Refactor tcp_skb_cb to create two overlaping areas to store
state for incoming or outgoing skbs based on comments by
Neal Cardwell to tcp_nv patch:
AFAICT this patch would not require an increase in the size of
sk_buff cb[] if it were to take advantage of the fact that the
tcp_skb_cb header.h4 and header.h6 fields are only used in the packet
reception code path, and this in_flight field is only used on the
transmit side.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com >
Acked-by: Yuchung Cheng <ycheng@google.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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b75803d52a