Defined in 2 files as a macro:

• bsd/netinet/tcp_var.h, line 78 (as a macro)
• bsd/netinet/tcp_var.h, line 84 (as a macro)

Referenced in 2 files:

• bsd/netinet/tcp_subr.c, line 2180
• bsd/netinet/tcp_var.h, line 1124