From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Smith <codesoldier1@gmail.com>
Subject: SKB Reference Question
Date: Wed, 1 Nov 2017 10:27:49 -0700
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To: netdev@vger.kernel.org, David Miller <davem@davemloft.net>,
        Eric Dumazet <eric.dumazet@gmail.com>
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How strictly are references on the SKB enforced. For example,
tcp_transmit_skb() clones the SKB and adds a TCP header. Can I assume
that in case of re-transmission the header added will be there and can
be reused instead of creating a new one from scratch. Some fields like
time stamp would need to be updated but they should be unmodified.

Regards,

-- 
JS