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LWIP_HOOK_TCP_ISN: added CHANGELOG/fixed comment

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sg 2016-12-15 21:08:12 +01:00
parent a8b986bbb6
commit 62e340067e
2 changed files with 6 additions and 2 deletions
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4
CHANGELOG
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@ -26,6 +26,10 @@ HISTORY
++ Bugfixes:
2016-12-15: David van Moolenbroek
* opt.h, tcp: added LWIP_HOOK_TCP_ISN() to implement less predictable initial
sequence numbers (see contrib/addons/tcp_isn for an example implementation)
2016-12-05: Dirk Ziegelmeier
* fixed compiling with IPv4 disabled (IPv6 only case)

4
src/include/lwip/opt.h
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@ -2415,8 +2415,8 @@
* Hook for generation of the Initial Sequence Number (ISN) for a new TCP
* connection. The default lwIP ISN generation algorithm is very basic and may
* allow for TCP spoofing attacks. This hook provides the means to implement
* the standardized ISN generation algorithm from RFC 6528, or any other
* desired algorithm (e.g., it can be set to LWIP_RAND()), as a replacement.
* the standardized ISN generation algorithm from RFC 6528 (see contrib/adons/tcp_isn),
* or any other desired algorithm as a replacement.
* Called from tcp_connect() and tcp_listen_input() when an ISN is needed for
* a new TCP connection, if TCP support (@ref LWIP_TCP) is enabled.\n
* Signature: u32_t my_hook_tcp_isn(const ip_addr_t* local_ip, u16_t local_port, const ip_addr_t* remote_ip, u16_t remote_port);