[newlib-cygwin] Add a TOE KTLS mode and a TOE hook for allocating TLS sessions.

[Sebastian Huber <sh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=12fb531a70a1b2db10e5a50bcc071b18021594c6

commit 12fb531a70a1b2db10e5a50bcc071b18021594c6
Author: John Baldwin <jhb@FreeBSD.org>
Date:   Tue Oct 8 21:34:06 2019 +0000

    Add a TOE KTLS mode and a TOE hook for allocating TLS sessions.
    
    This adds the glue to allocate TLS sessions and invokes it from
    the TLS enable socket option handler.  This also adds some counters
    for active TOE sessions.
    
    The TOE KTLS mode is returned by getsockopt(TLSTX_TLS_MODE) when
    TOE KTLS is in use on a socket, but cannot be set via setsockopt().
    
    To simplify various checks, a TLS session now includes an explicit
    'mode' member set to the value returned by TLSTX_TLS_MODE.  Various
    places that used to check 'sw_encrypt' against NULL to determine
    software vs ifnet (NIC) TLS now check 'mode' instead.
    
    Reviewed by:    np, gallatin
    Sponsored by:   Chelsio Communications
    Differential Revision:  https://reviews.freebsd.org/D21891

Diff:
---
 newlib/libc/sys/rtems/include/netinet/tcp.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/newlib/libc/sys/rtems/include/netinet/tcp.h b/newlib/libc/sys/rtems/include/netinet/tcp.h
index 37ba3bb55..125cacb28 100644
--- a/newlib/libc/sys/rtems/include/netinet/tcp.h
+++ b/newlib/libc/sys/rtems/include/netinet/tcp.h
@@ -357,6 +357,7 @@ struct tcp_function_set {
 #define	TCP_TLS_MODE_NONE	0
 #define	TCP_TLS_MODE_SW		1
 #define	TCP_TLS_MODE_IFNET	2
+#define	TCP_TLS_MODE_TOE	3
 
 /*
  * TCP Control message types