PERFORCE change 130663 for review

[Kip Macy]

http://perforce.freebsd.org/chv.cgi?CH=130663

Change 130663 by kmacy at kmacy:storage:toehead on 2007/12/12 04:29:25

	add TOE interface to TCP

Affected files ...

.. //depot/projects/toehead/sys/conf/files#2 edit
.. //depot/projects/toehead/sys/netinet/tcp_ofld.c#1 add
.. //depot/projects/toehead/sys/netinet/tcp_ofld.h#1 add
.. //depot/projects/toehead/sys/netinet/tcp_var.h#2 edit
.. //depot/projects/toehead/sys/netinet/toedev.h#1 add
.. //depot/projects/toehead/sys/sys/socket.h#2 edit

Differences ...

==== //depot/projects/toehead/sys/conf/files#2 (text+ko) ====

@@ -1888,6 +1888,7 @@
 netinet/tcp_hostcache.c		optional inet
 netinet/tcp_input.c		optional inet
 netinet/tcp_output.c		optional inet
+netinet/tcp_ofld.c		optional inet
 netinet/tcp_reass.c		optional inet
 netinet/tcp_sack.c		optional inet
 netinet/tcp_subr.c		optional inet

==== //depot/projects/toehead/sys/netinet/tcp_var.h#2 (text+ko) ====

@@ -123,6 +123,7 @@
 #define	TF_SIGNATURE	0x400000	/* require MD5 digests (RFC2385) */
 #define	TF_FORCEDATA	0x800000	/* force out a byte */
 #define	TF_TSO		0x1000000	/* TSO enabled on this connection */
+#define	TF_TOE		0x2000000	/* this connection is offloaded */
 
 	tcp_seq	snd_una;		/* send unacknowledged */
 	tcp_seq	snd_max;		/* highest sequence number sent;
@@ -206,7 +207,9 @@
 	int	t_rttlow;		/* smallest observerved RTT */
 	u_int32_t	rfbuf_ts;	/* recv buffer autoscaling timestamp */
 	int	rfbuf_cnt;		/* recv buffer autoscaling byte count */
-	void	*t_pspare[5];		/* toe usrreqs / toepcb * / congestion algo / vimage / 1 general use */ 
+	void	*t_pspare[3];		/* toe usrreqs / toepcb * / congestion algo / vimage / 1 general use */
+	struct toe_usrreqs *t_tu;       /* offload operations vector */
+	void *t_toe;			/* TOE pcb pointer	     */
 };
 
 #define IN_FASTRECOVERY(tp)	(tp->t_flags & TF_FASTRECOVERY)

==== //depot/projects/toehead/sys/sys/socket.h#2 (text+ko) ====

@@ -118,6 +118,8 @@
 #define	SO_ACCEPTFILTER	0x1000		/* there is an accept filter */
 #define	SO_BINTIME	0x2000		/* timestamp received dgram traffic */
 #endif
+#define	SO_NOOFFLOAD	0x4000		/* socket cannot be offloaded */
+#define	SO_NO_DDP       0x8000		/* disable direct data placement */
 
 /*
  * Additional options, not kept in so_options.