mptcp: token: move retry to caller
Once syncookie support is added, no state will be stored anymore when the syn/ack is generated in syncookie mode. When the ACK comes back, the generated key will be taken from the TCP ACK, the token is re-generated and inserted into the token tree. This means we can't retry with a new key when the token is already taken in the syncookie case. Therefore, move the retry logic to the caller to prepare for syncookie support in mptcp. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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