From ddd809f9e56e3a30d459d6189a1582808d204821 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 15 Jun 2008 11:11:28 +0000
Subject: (6/6) bcm57xx: package

This is the bcm57xx package.  I have tested default vlan functions,
but I dont have the equipment to test more advanced setups.  The default
vlan setup seems to be working fine.  I also added the activate_gpio
parameter which will make the driver activate the switch via gpio before
probing for it.

I'm not sure which method is best for autoload.  For the wrt350n, I
need the activate_gpio parameter.  But its probably not a good idea
to add that to the autoload file.  On a system without a bcm57xx switch,
isn't it a bad idea to mess with the gpios looking for the switch? Ideally,
wouldn't it be best to load the bcm57xx module from broadcom-diag, after
it has determined which router its on?  I tried using 'request_module' from
there, but had no success.  For now, I am relying on preinit to load
the bcm57xx module with activate_gpio param, after it has failed to load
switch_robo and switch_adm.

Signed-off-by: Ben Pfountz <netprince (at) vt (dot) edu>

SVN-Revision: 11471
---
 package/broadcom-57xx/src/proto/bcmtcp.h | 68 ++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 package/broadcom-57xx/src/proto/bcmtcp.h

(limited to 'package/broadcom-57xx/src/proto/bcmtcp.h')

diff --git a/package/broadcom-57xx/src/proto/bcmtcp.h b/package/broadcom-57xx/src/proto/bcmtcp.h
new file mode 100644
index 0000000..7e834a7
--- /dev/null
+++ b/package/broadcom-57xx/src/proto/bcmtcp.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2007, Broadcom Corporation
+ * All Rights Reserved.
+ * 
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ *
+ * Fundamental constants relating to TCP Protocol
+ *
+ * $Id: bcmtcp.h,v 1.1.1.1 2007/05/31 08:00:41 michael Exp $
+ */
+
+#ifndef _bcmtcp_h_
+#define _bcmtcp_h_
+
+/* enable structure packing */
+#if defined(__GNUC__)
+#define	PACKED	__attribute__((packed))
+#else
+#pragma pack(1)
+#define	PACKED
+#endif
+
+#define TCP_SRC_PORT_OFFSET	0	/* TCP source port offset */
+#define TCP_DEST_PORT_OFFSET	2	/* TCP dest port offset */
+#define TCP_CHKSUM_OFFSET	16	/* TCP body checksum offset */
+
+/* These fields are stored in network order */
+struct bcmtcp_hdr
+{
+	uint16	src_port;	/* Source Port Address */
+	uint16	dst_port;	/* Destination Port Address */
+	uint32	seq_num;	/* TCP Sequence Number */
+	uint32	ack_num;	/* TCP Sequence Number */
+	uint16	hdrlen_rsvd_flags;	/* Header length, reserved bits and flags */
+	uint16	tcpwin;		/* TCP window */
+	uint16	chksum;		/* Segment checksum with pseudoheader */
+	uint16	urg_ptr;	/* Points to seq-num of byte following urg data */
+} PACKED;
+
+#undef PACKED
+#if !defined(__GNUC__)
+#pragma pack()
+#endif
+
+/* Byte offset of flags in TCP header */
+#define TCP_FLAGS_OFFSET	13
+
+#define TCP_FLAGS_FIN		0x01
+#define TCP_FLAGS_SYN		0x02
+#define TCP_FLAGS_RST		0x03
+#define TCP_FLAGS_PSH		0x04
+#define TCP_FLAGS_ACK		0x10
+#define TCP_FLAGS_URG		0x20
+#define TCP_FLAGS_ECN		0x40
+#define TCP_FLAGS_CWR		0x80
+
+#define TCP_FLAGS(tcp_hdr)	(((uint8 *)(tcp_hdr))[TCP_FLAGS_OFFSET])
+#define TCP_IS_ACK(tcp_hdr)	(TCP_FLAGS(tcp_hdr) & TCP_FLAGS_ACK)
+
+#define TCP_SRC_PORT(tcp_hdr)	(ntoh16(((struct bcmtcp_hdr*)(tcp_hdr))->src_port))
+#define TCP_DST_PORT(tcp_hdr)	(ntoh16(((struct bcmtcp_hdr*)(tcp_hdr))->dst_port))
+#define TCP_SEQ_NUM(tcp_hdr)	(ntoh32(((struct bcmtcp_hdr*)(tcp_hdr))->seq_num))
+#define TCP_ACK_NUM(tcp_hdr)	(ntoh32(((struct bcmtcp_hdr*)(tcp_hdr))->ack_num))
+
+#endif	/* #ifndef _bcmtcp_h_ */
-- 
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