Merge master.kernel.org:/home/bcrl/net-2.5

into nuts.ninka.net:/home/davem/src/BK/aio-2.5

9 files changed, 306 insertions, 235 deletions

diff --git a/include/net/flow.h b/include/net/flow.h
index e1ce1b2aea31..58fbf0e8314a 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -1,6 +1,6 @@
 /*
  *
- *	Flow based forwarding rules (usage: firewalling, etc)
+ *	Generic internet FLOW.
  *
  */
 
@@ -8,12 +8,16 @@
 #define _NET_FLOW_H
 
 struct flowi {
-	int	proto;		/*	{TCP, UDP, ICMP}	*/
+	int	oif;
+	int	iif;
 
 	union {
 		struct {
 			__u32			daddr;
 			__u32			saddr;
+			__u32			fwmark;
+			__u8			tos;
+			__u8			scope;
 		} ip4_u;
 		
 		struct {
@@ -27,9 +31,12 @@ struct flowi {
 #define fl6_flowlabel	nl_u.ip6_u.flowlabel
 #define fl4_dst		nl_u.ip4_u.daddr
 #define fl4_src		nl_u.ip4_u.saddr
+#define fl4_fwmark	nl_u.ip4_u.fwmark
+#define fl4_tos		nl_u.ip4_u.tos
+#define fl4_scope	nl_u.ip4_u.scope
 
-	int	oif;
-
+	__u8	proto;
+	__u8	flags;
 	union {
 		struct {
 			__u16	sport;
@@ -41,61 +48,8 @@ struct flowi {
 			__u8	code;
 		} icmpt;
 
-		unsigned long	data;
+		__u32		spi;
 	} uli_u;
 };
 
-#define FLOWR_NODECISION	0	/* rule not appliable to flow	*/
-#define FLOWR_SELECT		1	/* flow must follow this rule	*/
-#define FLOWR_CLEAR		2	/* priority level clears flow	*/
-#define FLOWR_ERROR		3
-
-struct fl_acc_args {
-	int	type;
-
-
-#define FL_ARG_FORWARD	1
-#define FL_ARG_ORIGIN	2
-
-	union {
-		struct sk_buff		*skb;
-		struct {
-			struct sock	*sk;
-			struct flowi	*flow;
-		} fl_o;
-	} fl_u;
-};
-
-
-struct pkt_filter {
-	atomic_t		refcnt;
-	unsigned int		offset;
-	__u32			value;
-	__u32			mask;
-	struct pkt_filter	*next;
-};
-
-#define FLR_INPUT		1
-#define FLR_OUTPUT		2
-
-struct flow_filter {
-	int				type;
-	union {
-		struct pkt_filter	*filter;
-		struct sock		*sk;
-	} u;
-};
-
-struct flow_rule {
-	struct flow_rule_ops		*ops;
-	unsigned char			private[0];
-};
-
-struct flow_rule_ops {
-	int			(*accept)(struct rt6_info *rt,
-					  struct rt6_info *rule,
-					  struct fl_acc_args *args,
-					  struct rt6_info **nrt);
-};
-
 #endif
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index f8d382f4e7d8..4fb406133dbb 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -70,14 +70,6 @@ struct rt6_info
 	u8				rt6i_hoplimit;
 	atomic_t			rt6i_ref;
 
-	union {
-		struct flow_rule	*rt6iu_flowr;
-		struct flow_filter	*rt6iu_filter;
-	} flow_u;
-
-#define rt6i_flowr			flow_u.rt6iu_flowr
-#define rt6i_filter			flow_u.rt6iu_filter
-
 	struct rt6key			rt6i_dst;
 	struct rt6key			rt6i_src;
 };
diff --git a/include/net/ip6_fw.h b/include/net/ip6_fw.h
deleted file mode 100644
index 7866273d3d56..000000000000
--- a/include/net/ip6_fw.h
+++ /dev/null
@@ -1,54 +0,0 @@
-#ifndef __NET_IP6_FW_H
-#define __NET_IP6_FW_H
-
-#define IP6_FW_LISTHEAD		0x1000
-#define IP6_FW_ACCEPT		0x0001
-#define IP6_FW_REJECT		0x0002
-
-#define IP6_FW_DEBUG	2
-
-#define IP6_FW_MSG_ADD		1
-#define IP6_FW_MSG_DEL		2
-#define IP6_FW_MSG_REPORT	3
-
-
-/*
- *	Fast "hack" user interface
- */
-struct ip6_fw_msg {
-	struct in6_addr		dst;
-	struct in6_addr		src;
-	int			dst_len;
-	int			src_len;
-	int			action;
-	int			policy;
-	int			proto;
-	union {
-		struct {
-			__u16	sport;
-			__u16	dport;
-		} transp;
-
-		unsigned long	data;
-
-		int		icmp_type;
-	} u;
-
-	int			msg_len;
-};
-
-#ifdef __KERNEL__
-
-#include <net/flow.h>
-
-struct ip6_fw_rule {
-	struct flow_rule	flowr;
-	struct ip6_fw_rule	*next;
-	struct ip6_fw_rule	*prev;
-	struct flowi		info;
-	unsigned long		policy;
-};
-
-#endif
-
-#endif
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 3b84c5bff809..236641e5bc51 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -17,6 +17,7 @@
 #define _NET_IP_FIB_H
 
 #include <linux/config.h>
+#include <net/flow.h>
 
 struct kern_rta
 {
@@ -117,7 +118,7 @@ struct fib_table
 {
 	unsigned char	tb_id;
 	unsigned	tb_stamp;
-	int		(*tb_lookup)(struct fib_table *tb, const struct rt_key *key, struct fib_result *res);
+	int		(*tb_lookup)(struct fib_table *tb, const struct flowi *flp, struct fib_result *res);
 	int		(*tb_insert)(struct fib_table *table, struct rtmsg *r,
 				     struct kern_rta *rta, struct nlmsghdr *n,
 				     struct netlink_skb_parms *req);
@@ -130,7 +131,7 @@ struct fib_table
 	int		(*tb_get_info)(struct fib_table *table, char *buf,
 				       int first, int count);
 	void		(*tb_select_default)(struct fib_table *table,
-					     const struct rt_key *key, struct fib_result *res);
+					     const struct flowi *flp, struct fib_result *res);
 
 	unsigned char	tb_data[0];
 };
@@ -152,18 +153,18 @@ static inline struct fib_table *fib_new_table(int id)
 	return fib_get_table(id);
 }
 
-static inline int fib_lookup(const struct rt_key *key, struct fib_result *res)
+static inline int fib_lookup(const struct flowi *flp, struct fib_result *res)
 {
-	if (local_table->tb_lookup(local_table, key, res) &&
-	    main_table->tb_lookup(main_table, key, res))
+	if (local_table->tb_lookup(local_table, flp, res) &&
+	    main_table->tb_lookup(main_table, flp, res))
 		return -ENETUNREACH;
 	return 0;
 }
 
-static inline void fib_select_default(const struct rt_key *key, struct fib_result *res)
+static inline void fib_select_default(const struct flowi *flp, struct fib_result *res)
 {
 	if (FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
-		main_table->tb_select_default(main_table, key, res);
+		main_table->tb_select_default(main_table, flp, res);
 }
 
 #else /* CONFIG_IP_MULTIPLE_TABLES */
@@ -171,7 +172,7 @@ static inline void fib_select_default(const struct rt_key *key, struct fib_resul
 #define main_table (fib_tables[RT_TABLE_MAIN])
 
 extern struct fib_table * fib_tables[RT_TABLE_MAX+1];
-extern int fib_lookup(const struct rt_key *key, struct fib_result *res);
+extern int fib_lookup(const struct flowi *flp, struct fib_result *res);
 extern struct fib_table *__fib_new_table(int id);
 extern void fib_rule_put(struct fib_rule *r);
 
@@ -191,7 +192,7 @@ static inline struct fib_table *fib_new_table(int id)
 	return fib_tables[id] ? : __fib_new_table(id);
 }
 
-extern void fib_select_default(const struct rt_key *key, struct fib_result *res);
+extern void fib_select_default(const struct flowi *flp, struct fib_result *res);
 
 #endif /* CONFIG_IP_MULTIPLE_TABLES */
 
@@ -204,13 +205,13 @@ extern int inet_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *ar
 extern int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
 extern int fib_validate_source(u32 src, u32 dst, u8 tos, int oif,
 			       struct net_device *dev, u32 *spec_dst, u32 *itag);
-extern void fib_select_multipath(const struct rt_key *key, struct fib_result *res);
+extern void fib_select_multipath(const struct flowi *flp, struct fib_result *res);
 
 /* Exported by fib_semantics.c */
 extern int 		ip_fib_check_default(u32 gw, struct net_device *dev);
 extern void		fib_release_info(struct fib_info *);
 extern int		fib_semantic_match(int type, struct fib_info *,
-					   const struct rt_key *, struct fib_result*);
+					   const struct flowi *, struct fib_result*);
 extern struct fib_info	*fib_create_info(const struct rtmsg *r, struct kern_rta *rta,
 					 const struct nlmsghdr *, int *err);
 extern int fib_nh_match(struct rtmsg *r, struct nlmsghdr *, struct kern_rta *rta, struct fib_info *fi);
diff --git a/include/net/irda/crc.h b/include/net/irda/crc.h
index 61a5a648864d..a419a992f15f 100644
--- a/include/net/irda/crc.h
+++ b/include/net/irda/crc.h
@@ -28,6 +28,6 @@ static inline __u16 irda_fcs(__u16 fcs, __u8 c)
 }
 
 /* Recompute the FCS with len bytes appended. */
-unsigned short crc_calc( __u16 fcs, __u8 const *buf, size_t len);
+unsigned short irda_calc_crc16( __u16 fcs, __u8 const *buf, size_t len);
 
 #endif
diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h
index 7f9659cc4239..7ff56638b9d6 100644
--- a/include/net/irda/ircomm_tty.h
+++ b/include/net/irda/ircomm_tty.h
@@ -48,7 +48,9 @@
 /* This is used as an initial value to max_header_size before the proper
  * value is filled in (5 for ttp, 4 for lmp). This allow us to detect
  * the state of the underlying connection. - Jean II */
-#define IRCOMM_TTY_HDR_UNITIALISED	32
+#define IRCOMM_TTY_HDR_UNINITIALISED	16
+/* Same for payload size. See qos.c for the smallest max data size */
+#define IRCOMM_TTY_DATA_UNINITIALISED	(64 - IRCOMM_TTY_HDR_UNINITIALISED)
 
 /*
  * IrCOMM TTY driver state
@@ -83,6 +85,7 @@ struct ircomm_tty_cb {
 
 	__u32 max_data_size;   /* Max data we can transmit in one packet */
 	__u32 max_header_size; /* The amount of header space we must reserve */
+	__u32 tx_data_size;	/* Max data size of current tx_skb */
 
 	struct iriap_cb *iriap; /* Instance used for querying remote IAS */
 	struct ias_object* obj;
diff --git a/include/net/irda/vlsi_ir.h b/include/net/irda/vlsi_ir.h
index fab3ebb726c3..32d30cbc0920 100644
--- a/include/net/irda/vlsi_ir.h
+++ b/include/net/irda/vlsi_ir.h
@@ -3,9 +3,9 @@
  *
  *	vlsi_ir.h:	VLSI82C147 PCI IrDA controller driver for Linux
  *
- *	Version:	0.3, Sep 30, 2001
+ *	Version:	0.4
  *
- *	Copyright (c) 2001 Martin Diehl
+ *	Copyright (c) 2001-2002 Martin Diehl
  *
  *	This program is free software; you can redistribute it and/or 
  *	modify it under the terms of the GNU General Public License as 
@@ -27,6 +27,26 @@
 #ifndef IRDA_VLSI_FIR_H
 #define IRDA_VLSI_FIR_H
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,4)
+#ifdef CONFIG_PROC_FS
+/* PDE() introduced in 2.5.4 */
+#define PDE(inode) ((inode)->u.generic_ip)
+#endif
+#endif
+
+/*
+ * #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,xx)
+ *
+ * missing pci-dma api call to give streaming dma buffer back to hw
+ * patch floating on lkml - probably present in 2.5.26 or later
+ * otherwise defining it as noop is ok, since the vlsi-ir is only
+ * used on two oldish x86-based notebooks which are cache-coherent
+ */
+#define pci_dma_prep_single(dev, addr, size, direction)	/* nothing */
+/*
+ * #endif
+ */
+
 /* ================================================================ */
 
 /* non-standard PCI registers */
@@ -58,20 +78,20 @@ enum vlsi_pci_clkctl {
 
 	/* PLL control */
 
-	CLKCTL_NO_PD		= 0x04,		/* PD# (inverted power down) signal,
-						 * i.e. PLL is powered, if NO_PD set */
+	CLKCTL_PD_INV		= 0x04,		/* PD#: inverted power down signal,
+						 * i.e. PLL is powered, if PD_INV set */
 	CLKCTL_LOCK		= 0x40,		/* (ro) set, if PLL is locked */
 
 	/* clock source selection */
 
-	CLKCTL_EXTCLK		= 0x20,		/* set to select external clock input */
-	CLKCTL_XCKSEL		= 0x10,		/* set to indicate 40MHz EXTCLK, not 48MHz */
+	CLKCTL_EXTCLK		= 0x20,		/* set to select external clock input, not PLL */
+	CLKCTL_XCKSEL		= 0x10,		/* set to indicate EXTCLK is 40MHz, not 48MHz */
 
 	/* IrDA block control */
 
 	CLKCTL_CLKSTP		= 0x80,		/* set to disconnect from selected clock source */
 	CLKCTL_WAKE		= 0x08		/* set to enable wakeup feature: whenever IR activity
-						 * is detected, NO_PD gets set and CLKSTP cleared */
+						 * is detected, PD_INV gets set(?) and CLKSTP cleared */
 };
 
 /* ------------------------------------------ */
@@ -82,10 +102,9 @@ enum vlsi_pci_clkctl {
 #define DMA_MASK_MSTRPAGE	0x00ffffff
 #define MSTRPAGE_VALUE		(DMA_MASK_MSTRPAGE >> 24)
 
-
 	/* PCI busmastering is somewhat special for this guy - in short:
 	 *
-	 * We select to operate using MSTRPAGE=0 fixed, use ISA DMA
+	 * We select to operate using fixed MSTRPAGE=0, use ISA DMA
 	 * address restrictions to make the PCI BM api aware of this,
 	 * but ensure the hardware is dealing with real 32bit access.
 	 *
@@ -151,7 +170,6 @@ enum vlsi_pci_irmisc {
 	IRMISC_UARTSEL_2e8	= 0x03
 };
 
-
 /* ================================================================ */
 
 /* registers mapped to 32 byte PCI IO space */
@@ -350,22 +368,17 @@ enum vlsi_pio_irenable {
 
 #define	  IRENABLE_MASK	    0xff00  /* Read mask */
 
-
 /* ------------------------------------------ */
 
 /* VLSI_PIO_PHYCTL: IR Physical Layer Current Control Register (u16, ro) */
 
-
 /* read-back of the currently applied physical layer status.
  * applied from VLSI_PIO_NPHYCTL at rising edge of IRENABLE_IREN
  * contents identical to VLSI_PIO_NPHYCTL (see below)
  */
 
-
-
 /* ------------------------------------------ */
 
-
 /* VLSI_PIO_NPHYCTL: IR Physical Layer Next Control Register (u16, rw) */
 
 /* latched during IRENABLE_IREN=0 and applied at 0-1 transition
@@ -382,10 +395,10 @@ enum vlsi_pio_irenable {
  *		fixed for all SIR speeds at 40MHz input clock (PLSWID=24 at 48MHz).
  *		IrPHY also allows shorter pulses down to the nominal pulse duration
  *		at 115.2kbaud (minus some tolerance) which is 1.41 usec.
- *		Using the expression PLSWID = 12/(BAUD+1)-1 (multiplied by to for 48MHz)
+ *		Using the expression PLSWID = 12/(BAUD+1)-1 (multiplied by two for 48MHz)
  *		we get the minimum acceptable PLSWID values according to the VLSI
  *		specification, which provides 1.5 usec pulse width for all speeds (except
- *		for 2.4kbaud getting 6usec). This is well inside IrPHY v1.3 specs and
+ *		for 2.4kbaud getting 6usec). This is fine with IrPHY v1.3 specs and
  *		reduces the transceiver power which drains the battery. At 9.6kbaud for
  *		example this amounts to more than 90% battery power saving!
  *
@@ -399,7 +412,21 @@ enum vlsi_pio_irenable {
  *		PREAMB = 15
  */
 
-#define BWP_TO_PHYCTL(B,W,P)	((((B)&0x3f)<<10) | (((W)&0x1f)<<5) | (((P)&0x1f)<<0))
+#define PHYCTL_BAUD_SHIFT	10
+#define PHYCTL_BAUD_MASK	0xfc00
+#define PHYCTL_PLSWID_SHIFT	5
+#define PHYCTL_PLSWID_MASK	0x03e0
+#define PHYCTL_PREAMB_SHIFT	0
+#define PHYCTL_PREAMB_MASK	0x001f
+
+#define PHYCTL_TO_BAUD(bwp)	(((bwp)&PHYCTL_BAUD_MASK)>>PHYCTL_BAUD_SHIFT)
+#define PHYCTL_TO_PLSWID(bwp)	(((bwp)&PHYCTL_PLSWID_MASK)>>PHYCTL_PLSWID_SHIFT)
+#define PHYCTL_TO_PREAMB(bwp)	(((bwp)&PHYCTL_PREAMB_MASK)>>PHYCTL_PREAMB_SHIFT)
+
+#define BWP_TO_PHYCTL(b,w,p)	((((b)<<PHYCTL_BAUD_SHIFT)&PHYCTL_BAUD_MASK) \
+				 | (((w)<<PHYCTL_PLSWID_SHIFT)&PHYCTL_PLSWID_MASK) \
+				 | (((p)<<PHYCTL_PREAMB_SHIFT)&PHYCTL_PREAMB_MASK))
+
 #define BAUD_BITS(br)		((115200/(br))-1)
 
 static inline unsigned
@@ -417,7 +444,6 @@ calc_width_bits(unsigned baudrate, unsigned widthselect, unsigned clockselect)
 	return (tmp>0) ? (tmp-1) : 0;
 }
 
-
 #define PHYCTL_SIR(br,ws,cs)	BWP_TO_PHYCTL(BAUD_BITS(br),calc_width_bits((br),(ws),(cs)),0)
 #define PHYCTL_MIR(cs)		BWP_TO_PHYCTL(0,((cs)?9:10),1)
 #define PHYCTL_FIR		BWP_TO_PHYCTL(0,0,15)
@@ -445,42 +471,61 @@ calc_width_bits(unsigned baudrate, unsigned widthselect, unsigned clockselect)
 
 /* VLSI_PIO_MAXPKT: Maximum Packet Length register (u16, rw) */
 
-/* specifies the maximum legth (up to 4k - or (4k-1)? - bytes), which a
- * received frame may have - i.e. the size of the corresponding
- * receive buffers. For simplicity we use the same length for
- * receive and submit buffers and increase transfer buffer size
- * byond IrDA-MTU = 2048 so we have sufficient space left when
- * packet size increases during wrapping due to XBOFs and CE's.
- * Even for receiving unwrapped frames we need >MAX_PACKET_LEN
- * space since the controller appends FCS/CRC (2 or 4 bytes)
- * so we use 2*IrDA-MTU for both directions and cover even the
- * worst case, where all data bytes have to be escaped when wrapping.
- * well, this wastes some memory - anyway, later we will
- * either map skb's directly or use pci_pool allocator...
+/* maximum acceptable length for received packets */
+
+/* hw imposed limitation - register uses only [11:0] */
+#define MAX_PACKET_LENGTH	0x0fff
+
+/* IrLAP I-field (apparently not defined elsewhere) */
+#define IRDA_MTU		2048
+
+/* complete packet consists of A(1)+C(1)+I(<=IRDA_MTU) */
+#define IRLAP_SKB_ALLOCSIZE	(1+1+IRDA_MTU)
+
+/* the buffers we use to exchange frames with the hardware need to be
+ * larger than IRLAP_SKB_ALLOCSIZE because we may have up to 4 bytes FCS
+ * appended and, in SIR mode, a lot of frame wrapping bytes. The worst
+ * case appears to be a SIR packet with I-size==IRDA_MTU and all bytes
+ * requiring to be escaped to provide transparency. Furthermore, the peer
+ * might ask for quite a number of additional XBOFs:
+ *	up to 115+48 XBOFS		 163
+ *	regular BOF			   1
+ *	A-field				   1
+ *	C-field				   1
+ *	I-field, IRDA_MTU, all escaped	4096
+ *	FCS (16 bit at SIR, escaped)	   4
+ *	EOF				   1
+ * AFAICS nothing in IrLAP guarantees A/C field not to need escaping
+ * (f.e. 0xc0/0xc1 - i.e. BOF/EOF - are legal values there) so in the
+ * worst case we have 4269 bytes total frame size.
+ * However, the VLSI uses 12 bits only for all buffer length values,
+ * which limits the maximum useable buffer size <= 4095.
+ * Note this is not a limitation in the receive case because we use
+ * the SIR filtering mode where the hw unwraps the frame and only the
+ * bare packet+fcs is stored into the buffer - in contrast to the SIR
+ * tx case where we have to pass frame-wrapped packets to the hw.
+ * If this would ever become an issue in real life, the only workaround
+ * I see would be using the legacy UART emulation in SIR mode.
  */
- 
-#define IRDA_MTU	2048		/* seems to be undefined elsewhere */
- 
-#define XFER_BUF_SIZE		(2*IRDA_MTU)
-
-#define MAX_PACKET_LENGTH	(XFER_BUF_SIZE-1) /* register uses only [11:0] */
 
+#define XFER_BUF_SIZE		MAX_PACKET_LENGTH
 
 /* ------------------------------------------ */
 
-
 /* VLSI_PIO_RCVBCNT: Receive Byte Count Register (u16, ro) */
 
-/* recive packet counter gets incremented on every non-filtered
+/* receive packet counter gets incremented on every non-filtered
  * byte which was put in the receive fifo and reset for each
  * new packet. Used to decide whether we are just in the middle
  * of receiving
  */
 
+/* better apply the [11:0] mask when reading, as some docs say the
+ * reserved [15:12] would return 1 when reading - which is wrong AFAICS
+ */
 #define RCVBCNT_MASK	0x0fff
 
-/* ================================================================ */
-
+/******************************************************************/
 
 /* descriptors for rx/tx ring
  *
@@ -494,10 +539,10 @@ calc_width_bits(unsigned baudrate, unsigned widthselect, unsigned clockselect)
  *
  * Attention: Writing addr overwrites status!
  *
- * ### FIXME: we depend on endianess here
+ * ### FIXME: depends on endianess (but there ain't no non-i586 ob800 ;-)
  */
 
-struct ring_descr {
+struct ring_descr_hw {
 	volatile u16	rd_count;	/* tx/rx count [11:0] */
 	u16		reserved;
 	union {
@@ -505,60 +550,168 @@ struct ring_descr {
 		struct {
 			u8		addr_res[3];
 			volatile u8	status;		/* descriptor status */
-		} rd_s;
-	} rd_u;
-};
+		} rd_s __attribute__((packed));
+	} rd_u __attribute((packed));
+} __attribute__ ((packed));
 
 #define rd_addr		rd_u.addr
 #define rd_status	rd_u.rd_s.status
 
-
 /* ring descriptor status bits */
 
-#define RD_STAT_ACTIVE		0x80	/* descriptor owned by hw (both TX,RX) */
+#define RD_ACTIVE		0x80	/* descriptor owned by hw (both TX,RX) */
 
 /* TX ring descriptor status */
 
-#define	TX_STAT_DISCRC		0x40	/* do not send CRC (for SIR) */
-#define	TX_STAT_BADCRC		0x20	/* force a bad CRC */
-#define	TX_STAT_PULSE		0x10	/* send indication pulse after this frame (MIR/FIR) */
-#define	TX_STAT_FRCEUND		0x08	/* force underrun */
-#define	TX_STAT_CLRENTX		0x04	/* clear ENTX after this frame */
-#define	TX_STAT_UNDRN		0x01	/* TX fifo underrun (probably PCI problem) */
+#define	RD_TX_DISCRC		0x40	/* do not send CRC (for SIR) */
+#define	RD_TX_BADCRC		0x20	/* force a bad CRC */
+#define	RD_TX_PULSE		0x10	/* send indication pulse after this frame (MIR/FIR) */
+#define	RD_TX_FRCEUND		0x08	/* force underrun */
+#define	RD_TX_CLRENTX		0x04	/* clear ENTX after this frame */
+#define	RD_TX_UNDRN		0x01	/* TX fifo underrun (probably PCI problem) */
 
 /* RX ring descriptor status */
 
-#define RX_STAT_PHYERR		0x40	/* physical encoding error */
-#define RX_STAT_CRCERR		0x20	/* CRC error (MIR/FIR) */
-#define RX_STAT_LENGTH		0x10	/* frame exceeds buffer length */
-#define RX_STAT_OVER		0x08	/* RX fifo overrun (probably PCI problem) */
-#define RX_STAT_SIRBAD		0x04	/* EOF missing: BOF follows BOF (SIR, filtered) */
-
+#define RD_RX_PHYERR		0x40	/* physical encoding error */
+#define RD_RX_CRCERR		0x20	/* CRC error (MIR/FIR) */
+#define RD_RX_LENGTH		0x10	/* frame exceeds buffer length */
+#define RD_RX_OVER		0x08	/* RX fifo overrun (probably PCI problem) */
+#define RD_RX_SIRBAD		0x04	/* EOF missing: BOF follows BOF (SIR, filtered) */
 
-#define RX_STAT_ERROR		0x7c	/* any error in frame */
+#define RD_RX_ERROR		0x7c	/* any error in received frame */
 
+/* the memory required to hold the 2 descriptor rings */
+#define HW_RING_AREA_SIZE	(2 * MAX_RING_DESCR * sizeof(struct ring_descr_hw))
 
-/* ------------------------------------------ */
+/******************************************************************/
 
-/* contains the objects we've put into the ring descriptors
- * static buffers for now - probably skb's later
+/* sw-ring descriptors consists of a bus-mapped transfer buffer with
+ * associated skb and a pointer to the hw entry descriptor
  */
 
-struct ring_entry {
-	struct sk_buff	*skb;
-	void		*data;
+struct ring_descr {
+	struct ring_descr_hw	*hw;
+	struct sk_buff		*skb;
+	void			*buf;
 };
 
+/* wrappers for operations on hw-exposed ring descriptors
+ * access to the hw-part of the descriptors must use these.
+ */
+
+static inline int rd_is_active(struct ring_descr *rd)
+{
+	return ((rd->hw->rd_status & RD_ACTIVE) != 0);
+}
+
+static inline void rd_activate(struct ring_descr *rd)
+{
+	rd->hw->rd_status |= RD_ACTIVE;
+}
+
+static inline void rd_set_status(struct ring_descr *rd, u8 s)
+{
+	rd->hw->rd_status = s;	 /* may pass ownership to the hardware */
+}
+
+static inline void rd_set_addr_status(struct ring_descr *rd, dma_addr_t a, u8 s)
+{
+	/* order is important for two reasons:
+	 *  - overlayed: writing addr overwrites status
+	 *  - we want to write status last so we have valid address in
+	 *    case status has RD_ACTIVE set
+	 */
+
+	if ((a & ~DMA_MASK_MSTRPAGE)>>24 != MSTRPAGE_VALUE) {
+		BUG();
+		return;
+	}
+
+	a &= DMA_MASK_MSTRPAGE;  /* clear highbyte to make sure we won't write
+				  * to status - just in case MSTRPAGE_VALUE!=0
+				  */
+	rd->hw->rd_addr = a;
+	wmb();
+	rd_set_status(rd, s);	 /* may pass ownership to the hardware */
+}
+
+static inline void rd_set_count(struct ring_descr *rd, u16 c)
+{
+	rd->hw->rd_count = c;
+}
+
+static inline u8 rd_get_status(struct ring_descr *rd)
+{
+	return rd->hw->rd_status;
+}
+
+static inline dma_addr_t rd_get_addr(struct ring_descr *rd)
+{
+	dma_addr_t	a;
+
+	a = (rd->hw->rd_addr & DMA_MASK_MSTRPAGE) | (MSTRPAGE_VALUE << 24);
+	return a;
+}
+
+static inline u16 rd_get_count(struct ring_descr *rd)
+{
+	return rd->hw->rd_count;
+}
+
+/******************************************************************/
+
+/* sw descriptor rings for rx, tx:
+ *
+ * operations follow producer-consumer paradigm, with the hw
+ * in the middle doing the processing.
+ * ring size must be power of two.
+ *
+ * producer advances r->tail after inserting for processing
+ * consumer advances r->head after removing processed rd
+ * ring is empty if head==tail / full if (tail+1)==head
+ */
 
 struct vlsi_ring {
+	struct pci_dev		*pdev;
+	int			dir;
+	unsigned		len;
 	unsigned		size;
 	unsigned		mask;
-	unsigned		head, tail;
-	struct ring_descr	*hw;
-	struct ring_entry	buf[MAX_RING_DESCR];
+	atomic_t		head, tail;
+	struct ring_descr	*rd;
 };
 
-/* ------------------------------------------ */
+/* ring processing helpers */
+
+static inline struct ring_descr *ring_last(struct vlsi_ring *r)
+{
+	int t;
+
+	t = atomic_read(&r->tail) & r->mask;
+	return (((t+1) & r->mask) == (atomic_read(&r->head) & r->mask)) ? NULL : &r->rd[t];
+}
+
+static inline struct ring_descr *ring_put(struct vlsi_ring *r)
+{
+	atomic_inc(&r->tail);
+	return ring_last(r);
+}
+
+static inline struct ring_descr *ring_first(struct vlsi_ring *r)
+{
+	int h;
+
+	h = atomic_read(&r->head) & r->mask;
+	return (h == (atomic_read(&r->tail) & r->mask)) ? NULL : &r->rd[h];
+}
+
+static inline struct ring_descr *ring_get(struct vlsi_ring *r)
+{
+	atomic_inc(&r->head);
+	return ring_first(r);
+}
+
+/******************************************************************/
 
 /* our private compound VLSI-PCI-IRDA device information */
 
@@ -575,15 +728,40 @@ typedef struct vlsi_irda_dev {
 
 	dma_addr_t		busaddr;
 	void			*virtaddr;
-	struct vlsi_ring	tx_ring, rx_ring;
+	struct vlsi_ring	*tx_ring, *rx_ring;
 
 	struct timeval		last_rx;
 
 	spinlock_t		lock;
-	
+	struct semaphore	sem;
+
+	u32			cfg_space[64/sizeof(u32)];
+	u8			resume_ok;	
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry	*proc_entry;
+#endif
+
 } vlsi_irda_dev_t;
 
 /********************************************************/
 
+/* the remapped error flags we use for returning from frame
+ * post-processing in vlsi_process_tx/rx() after it was completed
+ * by the hardware. These functions either return the >=0 number
+ * of transfered bytes in case of success or the negative (-)
+ * of the or'ed error flags.
+ */
+
+#define VLSI_TX_DROP		0x0001
+#define VLSI_TX_FIFO		0x0002
+
+#define VLSI_RX_DROP		0x0100
+#define VLSI_RX_OVER		0x0200
+#define VLSI_RX_LENGTH  	0x0400
+#define VLSI_RX_FRAME		0x0800
+#define VLSI_RX_CRC		0x1000
+
+/********************************************************/
+
 #endif /* IRDA_VLSI_FIR_H */
 
diff --git a/include/net/route.h b/include/net/route.h
index 7ddc79e4d07e..621b0c44b250 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -27,6 +27,7 @@
 #include <linux/config.h>
 #include <net/dst.h>
 #include <net/inetpeer.h>
+#include <net/flow.h>
 #include <linux/in_route.h>
 #include <linux/rtnetlink.h>
 #include <linux/route.h>
@@ -45,19 +46,6 @@
 
 #define RT_CONN_FLAGS(sk)   (RT_TOS(inet_sk(sk)->tos) | sk->localroute)
 
-struct rt_key
-{
-	__u32			dst;
-	__u32			src;
-	int			iif;
-	int			oif;
-#ifdef CONFIG_IP_ROUTE_FWMARK
-	__u32			fwmark;
-#endif
-	__u8			tos;
-	__u8			scope;
-};
-
 struct inet_peer;
 struct rtable
 {
@@ -78,7 +66,7 @@ struct rtable
 	__u32			rt_gateway;
 
 	/* Cache lookup keys */
-	struct rt_key		key;
+	struct flowi		fl;
 
 	/* Miscellaneous cached information */
 	__u32			rt_spec_dst; /* RFC1122 specific destination */
@@ -124,7 +112,7 @@ extern void		ip_rt_redirect(u32 old_gw, u32 dst, u32 new_gw,
 				       u32 src, u8 tos, struct net_device *dev);
 extern void		ip_rt_advice(struct rtable **rp, int advice);
 extern void		rt_cache_flush(int how);
-extern int		ip_route_output_key(struct rtable **, const struct rt_key *key);
+extern int		ip_route_output_key(struct rtable **, const struct flowi *flp);
 extern int		ip_route_input(struct sk_buff*, u32 dst, u32 src, u8 tos, struct net_device *devin);
 extern unsigned short	ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu);
 extern void		ip_rt_update_pmtu(struct dst_entry *dst, unsigned mtu);
@@ -136,16 +124,6 @@ extern int		ip_rt_ioctl(unsigned int cmd, void *arg);
 extern void		ip_rt_get_source(u8 *src, struct rtable *rt);
 extern int		ip_rt_dump(struct sk_buff *skb,  struct netlink_callback *cb);
 
-/* Deprecated: use ip_route_output_key directly */
-static inline int ip_route_output(struct rtable **rp,
-				      u32 daddr, u32 saddr, u32 tos, int oif)
-{
-	struct rt_key key = { dst:daddr, src:saddr, oif:oif, tos:tos };
-
-	return ip_route_output_key(rp, &key);
-}
-
-
 static inline void ip_rt_put(struct rtable * rt)
 {
 	if (rt)
@@ -163,15 +141,20 @@ static inline char rt_tos2priority(u8 tos)
 
 static inline int ip_route_connect(struct rtable **rp, u32 dst, u32 src, u32 tos, int oif)
 {
+	struct flowi fl = { .nl_u = { .ip4_u = { .daddr = dst,
+						 .saddr = src,
+						 .tos   = tos } },
+			    .oif = oif };
+
 	int err;
-	err = ip_route_output(rp, dst, src, tos, oif);
+	err = ip_route_output_key(rp, &fl);
 	if (err || (dst && src))
 		return err;
-	dst = (*rp)->rt_dst;
-	src = (*rp)->rt_src;
+	fl.fl4_dst = (*rp)->rt_dst;
+	fl.fl4_src = (*rp)->rt_src;
 	ip_rt_put(*rp);
 	*rp = NULL;
-	return ip_route_output(rp, dst, src, tos, oif);
+	return ip_route_output_key(rp, &fl);
 }
 
 extern void rt_bind_peer(struct rtable *rt, int create);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 7183f85e9999..de3c44d714b0 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -472,6 +472,7 @@ extern int sysctl_tcp_rmem[3];
 extern int sysctl_tcp_app_win;
 extern int sysctl_tcp_adv_win_scale;
 extern int sysctl_tcp_tw_reuse;
+extern int sysctl_tcp_frto;
 
 extern atomic_t tcp_memory_allocated;
 extern atomic_t tcp_sockets_allocated;
@@ -1856,4 +1857,17 @@ static inline void tcp_v4_setup_caps(struct sock *sk, struct dst_entry *dst)
 
 #define TCP_CHECK_TIMER(sk) do { } while (0)
 
+static inline int tcp_use_frto(const struct sock *sk)
+{
+	const struct tcp_opt *tp = tcp_sk(sk);
+	
+	/* F-RTO must be activated in sysctl and there must be some
+	 * unsent new data, and the advertised window should allow
+	 * sending it.
+	 */
+	return (sysctl_tcp_frto && tp->send_head &&
+		!after(TCP_SKB_CB(tp->send_head)->end_seq,
+		       tp->snd_una + tp->snd_wnd));
+}
+
 #endif	/* _TCP_H */