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netinet/tcp: Add TCPOPT, TCPOLEN constants

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Programs such as iptables depend on these constants, which can also
be found defined in other libcs.

Since only TCP_* is reserved as part of tcp.h's namespace, we hide
them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose
them by default, but keep it standard conforming.
This commit is contained in:
Kylie McClain 2015-12-30 17:24:02 -05:00 committed by Rich Felker
parent 3cdbfb99c3
commit 53f41fb568
1 changed files with 13 additions and 0 deletions
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13
include/netinet/tcp.h
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@ -41,7 +41,20 @@
#define TCP_CLOSING 11
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
#define TCPOPT_MAXSEG 2
#define TCPOPT_WINDOW 3
#define TCPOPT_SACK_PERMITTED 4
#define TCPOPT_SACK 5
#define TCPOPT_TIMESTAMP 8
#define TCPOLEN_SACK_PERMITTED 2
#define TCPOLEN_WINDOW 3
#define TCPOLEN_MAXSEG 4
#define TCPOLEN_TIMESTAMP 10
#define SOL_TCP 6
#include <sys/types.h>
#include <sys/socket.h>
#include <stdint.h>