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| author | Raimo Niskanen <[email protected]> | 2018-09-18 15:46:31 +0200 |
|---|---|---|
| committer | Raimo Niskanen <[email protected]> | 2018-09-19 14:52:09 +0200 |
| commit | 9674ece7b2e57e265bd1dc55a623cc7888a1caa0 (patch) | |
| tree | 1b85793525781132a50950d5ef13843a4f61caff /lib | |
| parent | 2ad4b8f65e07423dd3cf230cecae635189b6f437 (diff) | |
| download | otp-9674ece7b2e57e265bd1dc55a623cc7888a1caa0.tar.gz otp-9674ece7b2e57e265bd1dc55a623cc7888a1caa0.tar.bz2 otp-9674ece7b2e57e265bd1dc55a623cc7888a1caa0.zip | |
Elaborate the disclaimer for 'pktoptions'
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/kernel/doc/src/gen_tcp.xml | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml index cf649991d0..24d63693fd 100644 --- a/lib/kernel/doc/src/gen_tcp.xml +++ b/lib/kernel/doc/src/gen_tcp.xml @@ -74,13 +74,25 @@ do_recv(Sock, Bs) -> <desc> <p> If the platform implements the IPv4 option - <c>IP_PKTOPTIONS</c> (probably Linux specific), or the IPv6 option + <c>IP_PKTOPTIONS</c>, or the IPv6 option <c>IPV6_PKTOPTIONS</c> or <c>IPV6_2292PKTOPTIONS</c> for the socket this value is returned from <seealso marker="inet#getopts/2"><c>inet:getopts/2</c></seealso> when called with the option name <seealso marker="#type-option_name"><c>pktoptions</c></seealso>. </p> + <note> + <p> + This option appears to be VERY Linux specific, + and its existence in future Linux kernel versions + is also worrying since the option is part of RFC 2292 + which is since long (2003) obsoleted by RFC 3542 + that <em>explicitly</em> removes this possibility to get + packet information from a stream socket. + For comparision: it has existed in FreeBSD but is now removed, + at least since FreeBSD 10. + </p> + </note> </desc> </datatype> <datatype> |