diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wan/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/wan/c101.c | 6 | ||||
| -rw-r--r-- | drivers/net/wan/hd64570.c (renamed from drivers/net/wan/hd6457x.c) | 254 | ||||
| -rw-r--r-- | drivers/net/wan/hd64572.c | 640 | ||||
| -rw-r--r-- | drivers/net/wan/hdlc_ppp.c | 648 | ||||
| -rw-r--r-- | drivers/net/wan/n2.c | 9 | ||||
| -rw-r--r-- | drivers/net/wan/pc300too.c | 119 | ||||
| -rw-r--r-- | drivers/net/wan/pci200syn.c | 77 | ||||
| -rw-r--r-- | drivers/net/wan/syncppp.c | 1476 |
9 files changed, 1374 insertions, 1857 deletions
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile index 102549605d0..cec16818a13 100644 --- a/drivers/net/wan/Makefile +++ b/drivers/net/wan/Makefile @@ -14,7 +14,7 @@ obj-$(CONFIG_HDLC_RAW) += hdlc_raw.o obj-$(CONFIG_HDLC_RAW_ETH) += hdlc_raw_eth.o obj-$(CONFIG_HDLC_CISCO) += hdlc_cisco.o obj-$(CONFIG_HDLC_FR) += hdlc_fr.o -obj-$(CONFIG_HDLC_PPP) += hdlc_ppp.o syncppp.o +obj-$(CONFIG_HDLC_PPP) += hdlc_ppp.o obj-$(CONFIG_HDLC_X25) += hdlc_x25.o pc300-y := pc300_drv.o diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c index c8e563106a4..b46897996f7 100644 --- a/drivers/net/wan/c101.c +++ b/drivers/net/wan/c101.c @@ -88,7 +88,7 @@ static card_t **new_card = &first_card; /* EDA address register must be set in EDAL, EDAH order - 8 bit ISA bus */ #define sca_outw(value, reg, card) do { \ writeb(value & 0xFF, (card)->win0base + C101_SCA + (reg)); \ - writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg+1));\ + writeb((value >> 8 ) & 0xFF, (card)->win0base + C101_SCA + (reg + 1));\ } while(0) #define port_to_card(port) (port) @@ -113,7 +113,7 @@ static inline void openwin(card_t *card, u8 page) } -#include "hd6457x.c" +#include "hd64570.c" static inline void set_carrier(port_t *port) @@ -381,7 +381,7 @@ static int __init c101_run(unsigned long irq, unsigned long winbase) return result; } - sca_init_sync_port(card); /* Set up C101 memory */ + sca_init_port(card); /* Set up C101 memory */ set_carrier(card); printk(KERN_INFO "%s: Moxa C101 on IRQ%u," diff --git a/drivers/net/wan/hd6457x.c b/drivers/net/wan/hd64570.c index 434583a94b3..223238de475 100644 --- a/drivers/net/wan/hd6457x.c +++ b/drivers/net/wan/hd64570.c @@ -1,5 +1,5 @@ /* - * Hitachi SCA HD64570 and HD64572 common driver for Linux + * Hitachi SCA HD64570 driver for Linux * * Copyright (C) 1998-2003 Krzysztof Halasa <khc@pm.waw.pl> * @@ -7,9 +7,7 @@ * under the terms of version 2 of the GNU General Public License * as published by the Free Software Foundation. * - * Sources of information: - * Hitachi HD64570 SCA User's Manual - * Hitachi HD64572 SCA-II User's Manual + * Source of information: Hitachi HD64570 SCA User's Manual * * We use the following SCA memory map: * @@ -26,33 +24,26 @@ * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers (if used) */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/jiffies.h> -#include <linux/types.h> +#include <linux/bitops.h> +#include <linux/errno.h> #include <linux/fcntl.h> -#include <linux/interrupt.h> +#include <linux/hdlc.h> #include <linux/in.h> -#include <linux/string.h> -#include <linux/errno.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/ioport.h> -#include <linux/bitops.h> - -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/io.h> - +#include <linux/jiffies.h> +#include <linux/kernel.h> +#include <linux/module.h> #include <linux/netdevice.h> #include <linux/skbuff.h> - -#include <linux/hdlc.h> - -#if (!defined (__HD64570_H) && !defined (__HD64572_H)) || \ - (defined (__HD64570_H) && defined (__HD64572_H)) -#error Either hd64570.h or hd64572.h must be included -#endif +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/types.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/uaccess.h> +#include "hd64570.h" #define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) #define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET) @@ -62,16 +53,6 @@ #define SCA_INTR_DMAC_RX(node) (node ? 0x20 : 0x02) #define SCA_INTR_DMAC_TX(node) (node ? 0x40 : 0x04) -#ifdef __HD64570_H /* HD64570 */ -#define sca_outa(value, reg, card) sca_outw(value, reg, card) -#define sca_ina(reg, card) sca_inw(reg, card) -#define writea(value, ptr) writew(value, ptr) - -#else /* HD64572 */ -#define sca_outa(value, reg, card) sca_outl(value, reg, card) -#define sca_ina(reg, card) sca_inl(reg, card) -#define writea(value, ptr) writel(value, ptr) -#endif static inline struct net_device *port_to_dev(port_t *port) { @@ -81,8 +62,6 @@ static inline struct net_device *port_to_dev(port_t *port) static inline int sca_intr_status(card_t *card) { u8 result = 0; - -#ifdef __HD64570_H /* HD64570 */ u8 isr0 = sca_in(ISR0, card); u8 isr1 = sca_in(ISR1, card); @@ -93,18 +72,6 @@ static inline int sca_intr_status(card_t *card) if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0); if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1); -#else /* HD64572 */ - u32 isr0 = sca_inl(ISR0, card); - - if (isr0 & 0x0000000F) result |= SCA_INTR_DMAC_RX(0); - if (isr0 & 0x000000F0) result |= SCA_INTR_DMAC_TX(0); - if (isr0 & 0x00000F00) result |= SCA_INTR_DMAC_RX(1); - if (isr0 & 0x0000F000) result |= SCA_INTR_DMAC_TX(1); - if (isr0 & 0x003E0000) result |= SCA_INTR_MSCI(0); - if (isr0 & 0x3E000000) result |= SCA_INTR_MSCI(1); - -#endif /* HD64570 vs HD64572 */ - if (!(result & SCA_INTR_DMAC_TX(0))) if (sca_in(DSR_TX(0), card) & DSR_EOM) result |= SCA_INTR_DMAC_TX(0); @@ -127,7 +94,6 @@ static inline u16 next_desc(port_t *port, u16 desc, int transmit) } - static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit) { u16 rx_buffs = port_to_card(port)->rx_ring_buffers; @@ -139,28 +105,26 @@ static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit) } - static inline u16 desc_offset(port_t *port, u16 desc, int transmit) { - /* Descriptor offset always fits in 16 bytes */ + /* Descriptor offset always fits in 16 bits */ return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc); } - -static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, int transmit) +static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, + int transmit) { #ifdef PAGE0_ALWAYS_MAPPED return (pkt_desc __iomem *)(win0base(port_to_card(port)) - + desc_offset(port, desc, transmit)); + + desc_offset(port, desc, transmit)); #else return (pkt_desc __iomem *)(winbase(port_to_card(port)) - + desc_offset(port, desc, transmit)); + + desc_offset(port, desc, transmit)); #endif } - static inline u32 buffer_offset(port_t *port, u16 desc, int transmit) { return port_to_card(port)->buff_offset + @@ -186,7 +150,7 @@ static inline void sca_set_carrier(port_t *port) } -static void sca_init_sync_port(port_t *port) +static void sca_init_port(port_t *port) { card_t *card = port_to_card(port); int transmit, i; @@ -195,7 +159,7 @@ static void sca_init_sync_port(port_t *port) port->txin = 0; port->txlast = 0; -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) +#ifndef PAGE0_ALWAYS_MAPPED openwin(card, 0); #endif @@ -209,7 +173,7 @@ static void sca_init_sync_port(port_t *port) u16 chain_off = desc_offset(port, i + 1, transmit); u32 buff_off = buffer_offset(port, i, transmit); - writea(chain_off, &desc->cp); + writew(chain_off, &desc->cp); writel(buff_off, &desc->bp); writew(0, &desc->len); writeb(0, &desc->stat); @@ -222,16 +186,14 @@ static void sca_init_sync_port(port_t *port) sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) : DCR_RX(phy_node(port)), card); -#ifdef __HD64570_H - sca_out(0, dmac + CPB, card); /* pointer base */ -#endif /* current desc addr */ - sca_outa(desc_offset(port, 0, transmit), dmac + CDAL, card); + sca_out(0, dmac + CPB, card); /* pointer base */ + sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card); if (!transmit) - sca_outa(desc_offset(port, buffs - 1, transmit), + sca_outw(desc_offset(port, buffs - 1, transmit), dmac + EDAL, card); else - sca_outa(desc_offset(port, 0, transmit), dmac + EDAL, + sca_outw(desc_offset(port, 0, transmit), dmac + EDAL, card); /* clear frame end interrupt counter */ @@ -258,7 +220,6 @@ static void sca_init_sync_port(port_t *port) } - #ifdef NEED_SCA_MSCI_INTR /* MSCI interrupt service */ static inline void sca_msci_intr(port_t *port) @@ -282,17 +243,15 @@ static inline void sca_msci_intr(port_t *port) #endif - -static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u16 rxin) +static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, + u16 rxin) { struct net_device *dev = port_to_dev(port); struct sk_buff *skb; u16 len; u32 buff; -#ifndef ALL_PAGES_ALWAYS_MAPPED u32 maxlen; u8 page; -#endif len = readw(&desc->len); skb = dev_alloc_skb(len); @@ -302,7 +261,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1 } buff = buffer_offset(port, rxin, 0); -#ifndef ALL_PAGES_ALWAYS_MAPPED page = buff / winsize(card); buff = buff % winsize(card); maxlen = winsize(card) - buff; @@ -314,12 +272,10 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1 openwin(card, page + 1); memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen); } else -#endif - memcpy_fromio(skb->data, winbase(card) + buff, len); + memcpy_fromio(skb->data, winbase(card) + buff, len); -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) - /* select pkt_desc table page back */ - openwin(card, 0); +#ifndef PAGE0_ALWAYS_MAPPED + openwin(card, 0); /* select pkt_desc table page back */ #endif skb_put(skb, len); #ifdef DEBUG_PKT @@ -333,7 +289,6 @@ static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, u1 } - /* Receive DMA interrupt service */ static inline void sca_rx_intr(port_t *port) { @@ -353,7 +308,7 @@ static inline void sca_rx_intr(port_t *port) while (1) { u32 desc_off = desc_offset(port, port->rxin, 0); pkt_desc __iomem *desc; - u32 cda = sca_ina(dmac + CDAL, card); + u32 cda = sca_inw(dmac + CDAL, card); if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc))) break; /* No frame received */ @@ -377,7 +332,7 @@ static inline void sca_rx_intr(port_t *port) sca_rx(card, port, desc, port->rxin); /* Set new error descriptor address */ - sca_outa(desc_off, dmac + EDAL, card); + sca_outw(desc_off, dmac + EDAL, card); port->rxin = next_desc(port, port->rxin, 0); } @@ -386,7 +341,6 @@ static inline void sca_rx_intr(port_t *port) } - /* Transmit DMA interrupt service */ static inline void sca_tx_intr(port_t *port) { @@ -407,7 +361,7 @@ static inline void sca_tx_intr(port_t *port) pkt_desc __iomem *desc; u32 desc_off = desc_offset(port, port->txlast, 1); - u32 cda = sca_ina(dmac + CDAL, card); + u32 cda = sca_inw(dmac + CDAL, card); if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc))) break; /* Transmitter is/will_be sending this frame */ @@ -423,17 +377,13 @@ static inline void sca_tx_intr(port_t *port) } - static irqreturn_t sca_intr(int irq, void* dev_id) { card_t *card = dev_id; int i; u8 stat; int handled = 0; - -#ifndef ALL_PAGES_ALWAYS_MAPPED u8 page = sca_get_page(card); -#endif while((stat = sca_intr_status(card)) != 0) { handled = 1; @@ -452,14 +402,11 @@ static irqreturn_t sca_intr(int irq, void* dev_id) } } -#ifndef ALL_PAGES_ALWAYS_MAPPED openwin(card, page); /* Restore original page */ -#endif return IRQ_RETVAL(handled); } - static void sca_set_port(port_t *port) { card_t* card = port_to_card(port); @@ -497,12 +444,7 @@ static void sca_set_port(port_t *port) port->tmc = tmc; /* baud divisor - time constant*/ -#ifdef __HD64570_H sca_out(port->tmc, msci + TMC, card); -#else - sca_out(port->tmc, msci + TMCR, card); - sca_out(port->tmc, msci + TMCT, card); -#endif /* Set BRG bits */ sca_out(port->rxs, msci + RXS, card); @@ -518,7 +460,6 @@ static void sca_set_port(port_t *port) } - static void sca_open(struct net_device *dev) { port_t *port = dev_to_port(dev); @@ -540,11 +481,7 @@ static void sca_open(struct net_device *dev) switch(port->parity) { case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break; case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break; -#ifdef __HD64570_H case PARITY_CRC16_PR0_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU_0; break; -#else - case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break; -#endif case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break; default: md0 = MD0_HDLC | MD0_CRC_NONE; } @@ -554,35 +491,20 @@ static void sca_open(struct net_device *dev) sca_out(0x00, msci + MD1, card); /* no address field check */ sca_out(md2, msci + MD2, card); sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */ -#ifdef __HD64570_H sca_out(CTL_IDLE, msci + CTL, card); -#else - /* Skip the rest of underrun frame */ - sca_out(CTL_IDLE | CTL_URCT | CTL_URSKP, msci + CTL, card); -#endif -#ifdef __HD64570_H /* Allow at least 8 bytes before requesting RX DMA operation */ /* TX with higher priority and possibly with shorter transfers */ sca_out(0x07, msci + RRC, card); /* +1=RXRDY/DMA activation condition*/ sca_out(0x10, msci + TRC0, card); /* = TXRDY/DMA activation condition*/ sca_out(0x14, msci + TRC1, card); /* +1=TXRDY/DMA deactiv condition */ -#else - sca_out(0x0F, msci + RNR, card); /* +1=RX DMA activation condition */ - sca_out(0x3C, msci + TFS, card); /* +1 = TX start */ - sca_out(0x38, msci + TCR, card); /* =Critical TX DMA activ condition */ - sca_out(0x38, msci + TNR0, card); /* =TX DMA activation condition */ - sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/ -#endif /* We're using the following interrupts: - TXINT (DMAC completed all transmisions, underrun or DCD change) - all DMA interrupts */ - sca_set_carrier(port); -#ifdef __HD64570_H /* MSCI TX INT and RX INT A IRQ enable */ sca_out(IE0_TXINT | IE0_RXINTA, msci + IE0, card); sca_out(IE1_UDRN | IE1_CDCD, msci + IE1, card); @@ -591,21 +513,8 @@ static void sca_open(struct net_device *dev) /* enable DMA IRQ */ sca_out(sca_in(IER1, card) | (phy_node(port) ? 0xF0 : 0x0F), IER1, card); -#else - /* MSCI TXINT and RXINTA interrupt enable */ - sca_outl(IE0_TXINT | IE0_RXINTA | IE0_UDRN | IE0_CDCD, msci + IE0, - card); - /* DMA & MSCI IRQ enable */ - sca_outl(sca_inl(IER0, card) | - (phy_node(port) ? 0x0A006600 : 0x000A0066), IER0, card); -#endif -#ifdef __HD64570_H sca_out(port->tmc, msci + TMC, card); /* Restore registers */ -#else - sca_out(port->tmc, msci + TMCR, card); - sca_out(port->tmc, msci + TMCT, card); -#endif sca_out(port->rxs, msci + RXS, card); sca_out(port->txs, msci + TXS, card); sca_out(CMD_TX_ENABLE, msci + CMD, card); @@ -615,7 +524,6 @@ static void sca_open(struct net_device *dev) } - static void sca_close(struct net_device *dev) { port_t *port = dev_to_port(dev); @@ -623,23 +531,17 @@ static void sca_close(struct net_device *dev) /* reset channel */ sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port)); -#ifdef __HD64570_H /* disable MSCI interrupts */ sca_out(sca_in(IER0, card) & (phy_node(port) ? 0x0F : 0xF0), IER0, card); /* disable DMA interrupts */ sca_out(sca_in(IER1, card) & (phy_node(port) ? 0x0F : 0xF0), IER1, card); -#else - /* disable DMA & MSCI IRQ */ - sca_outl(sca_inl(IER0, card) & - (phy_node(port) ? 0x00FF00FF : 0xFF00FF00), IER0, card); -#endif + netif_stop_queue(dev); } - static int sca_attach(struct net_device *dev, unsigned short encoding, unsigned short parity) { @@ -653,11 +555,7 @@ static int sca_attach(struct net_device *dev, unsigned short encoding, if (parity != PARITY_NONE && parity != PARITY_CRC16_PR0 && parity != PARITY_CRC16_PR1 && -#ifdef __HD64570_H parity != PARITY_CRC16_PR0_CCITT && -#else - parity != PARITY_CRC32_PR1_CCITT && -#endif parity != PARITY_CRC16_PR1_CCITT) return -EINVAL; @@ -667,34 +565,30 @@ static int sca_attach(struct net_device *dev, unsigned short encoding, } - #ifdef DEBUG_RINGS static void sca_dump_rings(struct net_device *dev) { port_t *port = dev_to_port(dev); card_t *card = port_to_card(port); u16 cnt; -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) - u8 page; -#endif +#ifndef PAGE0_ALWAYS_MAPPED + u8 page = sca_get_page(card); -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) - page = sca_get_page(card); openwin(card, 0); #endif printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive", - sca_ina(get_dmac_rx(port) + CDAL, card), - sca_ina(get_dmac_rx(port) + EDAL, card), + sca_inw(get_dmac_rx(port) + CDAL, card), + sca_inw(get_dmac_rx(port) + EDAL, card), sca_in(DSR_RX(phy_node(port)), card), port->rxin, - sca_in(DSR_RX(phy_node(port)), card) & DSR_DE?"":"in"); + sca_in(DSR_RX(phy_node(port)), card) & DSR_DE ? "" : "in"); for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++) printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat))); printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u " "last=%u %sactive", - sca_ina(get_dmac_tx(port) + CDAL, card), - sca_ina(get_dmac_tx(port) + EDAL, card), + sca_inw(get_dmac_tx(port) + CDAL, card), + sca_inw(get_dmac_tx(port) + EDAL, card), sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast, sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in"); @@ -702,12 +596,8 @@ static void sca_dump_rings(struct net_device *dev) printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat))); printk("\n"); - printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, " - "ST: %02x %02x %02x %02x" -#ifdef __HD64572_H - " %02x" -#endif - ", FST: %02x CST: %02x %02x\n", + printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x, ST: %02x %02x %02x %02x," + " FST: %02x CST: %02x %02x\n", sca_in(get_msci(port) + MD0, card), sca_in(get_msci(port) + MD1, card), sca_in(get_msci(port) + MD2, card), @@ -715,52 +605,33 @@ static void sca_dump_rings(struct net_device *dev) sca_in(get_msci(port) + ST1, card), sca_in(get_msci(port) + ST2, card), sca_in(get_msci(port) + ST3, card), -#ifdef __HD64572_H - sca_in(get_msci(port) + ST4, card), -#endif sca_in(get_msci(port) + FST, card), sca_in(get_msci(port) + CST0, card), sca_in(get_msci(port) + CST1, card)); -#ifdef __HD64572_H - printk(KERN_DEBUG "ILAR: %02x ISR: %08x %08x\n", sca_in(ILAR, card), - sca_inl(ISR0, card), sca_inl(ISR1, card)); -#else printk(KERN_DEBUG "ISR: %02x %02x %02x\n", sca_in(ISR0, card), sca_in(ISR1, card), sca_in(ISR2, card)); -#endif -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) +#ifndef PAGE0_ALWAYS_MAPPED openwin(card, page); /* Restore original page */ #endif } #endif /* DEBUG_RINGS */ - static int sca_xmit(struct sk_buff *skb, struct net_device *dev) { port_t *port = dev_to_port(dev); card_t *card = port_to_card(port); pkt_desc __iomem *desc; u32 buff, len; -#ifndef ALL_PAGES_ALWAYS_MAPPED u8 page; u32 maxlen; -#endif spin_lock_irq(&port->lock); desc = desc_address(port, port->txin + 1, 1); - if (readb(&desc->stat)) { /* allow 1 packet gap */ - /* should never happen - previous xmit should stop queue */ -#ifdef DEBUG_PKT - printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name); -#endif - netif_stop_queue(dev); - spin_unlock_irq(&port->lock); - return 1; /* request packet to be queued */ - } + BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */ #ifdef DEBUG_PKT printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len); @@ -770,7 +641,6 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev) desc = desc_address(port, port->txin, 1); buff = buffer_offset(port, port->txin, 1); len = skb->len; -#ifndef ALL_PAGES_ALWAYS_MAPPED page = buff / winsize(card); buff = buff % winsize(card); maxlen = winsize(card) - buff; @@ -780,12 +650,10 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev) memcpy_toio(winbase(card) + buff, skb->data, maxlen); openwin(card, page + 1); memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen); - } - else -#endif + } else memcpy_toio(winbase(card) + buff, skb->data, len); -#if !defined(PAGE0_ALWAYS_MAPPED) && !defined(ALL_PAGES_ALWAYS_MAPPED) +#ifndef PAGE0_ALWAYS_MAPPED openwin(card, 0); /* select pkt_desc table page back */ #endif writew(len, &desc->len); @@ -793,7 +661,7 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev) dev->trans_start = jiffies; port->txin = next_desc(port, port->txin, 1); - sca_outa(desc_offset(port, port->txin, 1), + sca_outw(desc_offset(port, port->txin, 1), get_dmac_tx(port) + EDAL, card); sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */ @@ -809,40 +677,29 @@ static int sca_xmit(struct sk_buff *skb, struct net_device *dev) } - #ifdef NEED_DETECT_RAM -static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsize) +static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, + u32 ramsize) { /* Round RAM size to 32 bits, fill from end to start */ u32 i = ramsize &= ~3; - -#ifndef ALL_PAGES_ALWAYS_MAPPED u32 size = winsize(card); openwin(card, (i - 4) / size); /* select last window */ -#endif + do { i -= 4; -#ifndef ALL_PAGES_ALWAYS_MAPPED if ((i + 4) % size == 0) openwin(card, i / size); writel(i ^ 0x12345678, rambase + i % size); -#else - writel(i ^ 0x12345678, rambase + i); -#endif - }while (i > 0); + } while (i > 0); for (i = 0; i < ramsize ; i += 4) { -#ifndef ALL_PAGES_ALWAYS_MAPPED if (i % size == 0) openwin(card, i / size); if (readl(rambase + i % size) != (i ^ 0x12345678)) break; -#else - if (readl(rambase + i) != (i ^ 0x12345678)) - break; -#endif } return i; @@ -850,7 +707,6 @@ static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, u32 ramsi #endif /* NEED_DETECT_RAM */ - static void __devinit sca_init(card_t *card, int wait_states) { sca_out(wait_states, WCRL, card); /* Wait Control */ diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c new file mode 100644 index 00000000000..0bcc0b5f22d --- /dev/null +++ b/drivers/net/wan/hd64572.c @@ -0,0 +1,640 @@ +/* + * Hitachi (now Renesas) SCA-II HD64572 driver for Linux + * + * Copyright (C) 1998-2008 Krzysztof Halasa <khc@pm.waw.pl> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License + * as published by the Free Software Foundation. + * + * Source of information: HD64572 SCA-II User's Manual + * + * We use the following SCA memory map: + * + * Packet buffer descriptor rings - starting from card->rambase: + * rx_ring_buffers * sizeof(pkt_desc) = logical channel #0 RX ring + * tx_ring_buffers * sizeof(pkt_desc) = logical channel #0 TX ring + * rx_ring_buffers * sizeof(pkt_desc) = logical channel #1 RX ring (if used) + * tx_ring_buffers * sizeof(pkt_desc) = logical channel #1 TX ring (if used) + * + * Packet data buffers - starting from card->rambase + buff_offset: + * rx_ring_buffers * HDLC_MAX_MRU = logical channel #0 RX buffers + * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers + * rx_ring_buffers * HDLC_MAX_MRU = logical channel #0 RX buffers (if used) + * tx_ring_buffers * HDLC_MAX_MRU = logical channel #0 TX buffers (if used) + */ + +#include <linux/bitops.h> +#include <linux/errno.h> +#include <linux/fcntl.h> +#include <linux/hdlc.h> +#include <linux/in.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/jiffies.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/types.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/uaccess.h> +#include "hd64572.h" + +#define NAPI_WEIGHT 16 + +#define get_msci(port) (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) +#define get_dmac_rx(port) (port->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET) +#define get_dmac_tx(port) (port->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET) + +#define sca_in(reg, card) readb(card->scabase + (reg)) +#define sca_out(value, reg, card) writeb(value, card->scabase + (reg)) +#define sca_inw(reg, card) readw(card->scabase + (reg)) +#define sca_outw(value, reg, card) writew(value, card->scabase + (reg)) +#define sca_inl(reg, card) readl(card->scabase + (reg)) +#define sca_outl(value, reg, card) writel(value, card->scabase + (reg)) + +static int sca_poll(struct napi_struct *napi, int budget); + +static inline port_t* dev_to_port(struct net_device *dev) +{ + return dev_to_hdlc(dev)->priv; +} + +static inline void enable_intr(port_t *port) +{ + /* enable DMIB and MSCI RXINTA interrupts */ + sca_outl(sca_inl(IER0, port->card) | + (port->chan ? 0x08002200 : 0x00080022), IER0, port->card); +} + +static inline void disable_intr(port_t *port) +{ + sca_outl(sca_inl(IER0, port->card) & + (port->chan ? 0x00FF00FF : 0xFF00FF00), IER0, port->card); +} + +static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit) +{ + u16 rx_buffs = port->card->rx_ring_buffers; + u16 tx_buffs = port->card->tx_ring_buffers; + + desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc. + return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc; +} + + +static inline u16 desc_offset(port_t *port, u16 desc, int transmit) +{ + /* Descriptor offset always fits in 16 bits */ + return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc); +} + + +static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, + int transmit) +{ + return (pkt_desc __iomem *)(port->card->rambase + + desc_offset(port, desc, transmit)); +} + + +static inline u32 buffer_offset(port_t *port, u16 desc, int transmit) +{ + return port->card->buff_offset + + desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU; +} + + +static inline void sca_set_carrier(port_t *port) +{ + if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) { +#ifdef DEBUG_LINK + printk(KERN_DEBUG "%s: sca_set_carrier on\n", + port->netdev.name); +#endif + netif_carrier_on(port->netdev); + } else { +#ifdef DEBUG_LINK + printk(KERN_DEBUG "%s: sca_set_carrier off\n", + port->netdev.name); +#endif + netif_carrier_off(port->netdev); + } +} + + +static void sca_init_port(port_t *port) +{ + card_t *card = port->card; + u16 dmac_rx = get_dmac_rx(port), dmac_tx = get_dmac_tx(port); + int transmit, i; + + port->rxin = 0; + port->txin = 0; + port->txlast = 0; + + for (transmit = 0; transmit < 2; transmit++) { + u16 buffs = transmit ? card->tx_ring_buffers + : card->rx_ring_buffers; + + for (i = 0; i < buffs; i++) { + pkt_desc __iomem *desc = desc_address(port, i, transmit); + u16 chain_off = desc_offset(port, i + 1, transmit); + u32 buff_off = buffer_offset(port, i, transmit); + + writel(chain_off, &desc->cp); + writel(buff_off, &desc->bp); + writew(0, &desc->len); + writeb(0, &desc->stat); + } + } + + /* DMA disable - to halt state */ + sca_out(0, DSR_RX(port->chan), card); + sca_out(0, DSR_TX(port->chan), card); + + /* software ABORT - to initial state */ + sca_out(DCR_ABORT, DCR_RX(port->chan), card); + sca_out(DCR_ABORT, DCR_TX(port->chan), card); + + /* current desc addr */ + sca_outl(desc_offset(port, 0, 0), dmac_rx + CDAL, card); + sca_outl(desc_offset(port, card->tx_ring_buffers - 1, 0), + dmac_rx + EDAL, card); + sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card); + sca_outl(desc_offset(port, 0, 1), dmac_tx + EDAL, card); + + /* clear frame end interrupt counter */ + sca_out(DCR_CLEAR_EOF, DCR_RX(port->chan), card); + sca_out(DCR_CLEAR_EOF, DCR_TX(port->chan), card); + + /* Receive */ + sca_outw(HDLC_MAX_MRU, dmac_rx + BFLL, card); /* set buffer length */ + sca_out(0x14, DMR_RX(port->chan), card); /* Chain mode, Multi-frame */ + sca_out(DIR_EOME, DIR_RX(port->chan), card); /* enable interrupts */ + sca_out(DSR_DE, DSR_RX(port->chan), card); /* DMA enable */ + + /* Transmit */ + sca_out(0x14, DMR_TX(port->chan), card); /* Chain mode, Multi-frame */ + sca_out(DIR_EOME, DIR_TX(port->chan), card); /* enable interrupts */ + + sca_set_carrier(port); + netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT); +} + + +/* MSCI interrupt service */ +static inline void sca_msci_intr(port_t *port) +{ + u16 msci = get_msci(port); + card_t* card = port->card; + + if (sca_in(msci + ST1, card) & ST1_CDCD) { + /* Reset MSCI CDCD status bit */ + sca_out(ST1_CDCD, msci + ST1, card); + sca_set_carrier(port); + } +} + + +static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, + u16 rxin) +{ + struct net_device *dev = port->netdev; + struct sk_buff *skb; + u16 len; + u32 buff; + + len = readw(&desc->len); + skb = dev_alloc_skb(len); + if (!skb) { + dev->stats.rx_dropped++; + return; + } + + buff = buffer_offset(port, rxin, 0); + memcpy_fromio(skb->data, card->rambase + buff, len); + + skb_put(skb, len); +#ifdef DEBUG_PKT + printk(KERN_DEBUG "%s RX(%i):", dev->name, skb->len); + debug_frame(skb); +#endif + dev->stats.rx_packets++; + dev->stats.rx_bytes += skb->len; + skb->protocol = hdlc_type_trans(skb, dev); + netif_receive_skb(skb); +} + + +/* Receive DMA service */ +static inline int sca_rx_done(port_t *port, int budget) +{ + struct net_device *dev = port->netdev; + u16 dmac = get_dmac_rx(port); + card_t *card = port->card; + u8 stat = sca_in(DSR_RX(port->chan), card); /* read DMA Status */ + int received = 0; + + /* Reset DSR status bits */ + sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE, + DSR_RX(port->chan), card); + + if (stat & DSR_BOF) + /* Dropped one or more frames */ + dev->stats.rx_over_errors++; + + while (received < budget) { + u32 desc_off = desc_offset(port, port->rxin, 0); + pkt_desc __iomem *desc; + u32 cda = sca_inl(dmac + CDAL, card); + + if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc))) + break; /* No frame received */ + + desc = desc_address(port, port->rxin, 0); + stat = readb(&desc->stat); + if (!(stat & ST_RX_EOM)) + port->rxpart = 1; /* partial frame received */ + else if ((stat & ST_ERROR_MASK) || port->rxpart) { + dev->stats.rx_errors++; + if (stat & ST_RX_OVERRUN) + dev->stats.rx_fifo_errors++; + else if ((stat & (ST_RX_SHORT | ST_RX_ABORT | + ST_RX_RESBIT)) || port->rxpart) + dev->stats.rx_frame_errors++; + else if (stat & ST_RX_CRC) + dev->stats.rx_crc_errors++; + if (stat & ST_RX_EOM) + port->rxpart = 0; /* received last fragment */ + } else { + sca_rx(card, port, desc, port->rxin); + received++; + } + + /* Set new error descriptor address */ + sca_outl(desc_off, dmac + EDAL, card); + port->rxin = (port->rxin + 1) % card->rx_ring_buffers; + } + + /* make sure RX DMA is enabled */ + sca_out(DSR_DE, DSR_RX(port->chan), card); + return received; +} + + +/* Transmit DMA service */ +static inline void sca_tx_done(port_t *port) +{ + struct net_device *dev = port->netdev; + card_t* card = port->card; + u8 stat; + + spin_lock(&port->lock); + + stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */ + + /* Reset DSR status bits */ + sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE, + DSR_TX(port->chan), card); + + while (1) { + pkt_desc __iomem *desc = desc_address(port, port->txlast, 1); + u8 stat = readb(&desc->stat); + + if (!(stat & ST_TX_OWNRSHP)) + break; /* not yet transmitted */ + if (stat & ST_TX_UNDRRUN) { + dev->stats.tx_errors++; + dev->stats.tx_fifo_errors++; + } else { + dev->stats.tx_packets++; + dev->stats.tx_bytes += readw(&desc->len); + } + writeb(0, &desc->stat); /* Free descriptor */ + port->txlast = (port->txlast + 1) % card->tx_ring_buffers; + } + + netif_wake_queue(dev); + spin_unlock(&port->lock); +} + + +static int sca_poll(struct napi_struct *napi, int budget) +{ + port_t *port = container_of(napi, port_t, napi); + u32 isr0 = sca_inl(ISR0, port->card); + int received = 0; + + if (isr0 & (port->chan ? 0x08000000 : 0x00080000)) + sca_msci_intr(port); + + if (isr0 & (port->chan ? 0x00002000 : 0x00000020)) + sca_tx_done(port); + + if (isr0 & (port->chan ? 0x00000200 : 0x00000002)) + received = sca_rx_done(port, budget); + + if (received < budget) { + netif_rx_complete(port->netdev, napi); + enable_intr(port); + } + + return received; +} + +static irqreturn_t sca_intr(int irq, void *dev_id) +{ + card_t *card = dev_id; + u32 isr0 = sca_inl(ISR0, card); + int i, handled = 0; + + for (i = 0; i < 2; i++) { + port_t *port = get_port(card, i); + if (port && (isr0 & (i ? 0x08002200 : 0x00080022))) { + handled = 1; + disable_intr(port); + netif_rx_schedule(port->netdev, &port->napi); + } + } + + return IRQ_RETVAL(handled); +} + + +static void sca_set_port(port_t *port) +{ + card_t* card = port->card; + u16 msci = get_msci(port); + u8 md2 = sca_in(msci + MD2, card); + unsigned int tmc, br = 10, brv = 1024; + + + if (port->settings.clock_rate > 0) { + /* Try lower br for better accuracy*/ + do { + br--; + brv >>= 1; /* brv = 2^9 = 512 max in specs */ + + /* Baud Rate = CLOCK_BASE / TMC / 2^BR */ + tmc = CLOCK_BASE / brv / port->settings.clock_rate; + }while (br > 1 && tmc <= 128); + + if (tmc < 1) { + tmc = 1; + br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */ + brv = 1; + } else if (tmc > 255) + tmc = 256; /* tmc=0 means 256 - low baud rates */ + + port->settings.clock_rate = CLOCK_BASE / brv / tmc; + } else { + br = 9; /* Minimum clock rate */ + tmc = 256; /* 8bit = 0 */ + port->settings.clock_rate = CLOCK_BASE / (256 * 512); + } + + port->rxs = (port->rxs & ~CLK_BRG_MASK) | br; + port->txs = (port->txs & ~CLK_BRG_MASK) | br; + port->tmc = tmc; + + /* baud divisor - time constant*/ + sca_out(port->tmc, msci + TMCR, card); + sca_out(port->tmc, msci + TMCT, card); + + /* Set BRG bits */ + sca_out(port->rxs, msci + RXS, card); + sca_out(port->txs, msci + TXS, card); + + if (port->settings.loopback) + md2 |= MD2_LOOPBACK; + else + md2 &= ~MD2_LOOPBACK; + + sca_out(md2, msci + MD2, card); + +} + + +static void sca_open(struct net_device *dev) +{ + port_t *port = dev_to_port(dev); + card_t* card = port->card; + u16 msci = get_msci(port); + u8 md0, md2; + + switch(port->encoding) { + case ENCODING_NRZ: md2 = MD2_NRZ; break; + case ENCODING_NRZI: md2 = MD2_NRZI; break; + case ENCODING_FM_MARK: md2 = MD2_FM_MARK; break; + case ENCODING_FM_SPACE: md2 = MD2_FM_SPACE; break; + default: md2 = MD2_MANCHESTER; + } + + if (port->settings.loopback) + md2 |= MD2_LOOPBACK; + + switch(port->parity) { + case PARITY_CRC16_PR0: md0 = MD0_HDLC | MD0_CRC_16_0; break; + case PARITY_CRC16_PR1: md0 = MD0_HDLC | MD0_CRC_16; break; + case PARITY_CRC32_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU32; break; + case PARITY_CRC16_PR1_CCITT: md0 = MD0_HDLC | MD0_CRC_ITU; break; + default: md0 = MD0_HDLC | MD0_CRC_NONE; + } + + sca_out(CMD_RESET, msci + CMD, card); + sca_out(md0, msci + MD0, card); + sca_out(0x00, msci + MD1, card); /* no address field check */ + sca_out(md2, msci + MD2, card); + sca_out(0x7E, msci + IDL, card); /* flag character 0x7E */ + /* Skip the rest of underrun frame */ + sca_out(CTL_IDLE | CTL_URCT | CTL_URSKP, msci + CTL, card); + sca_out(0x0F, msci + RNR, card); /* +1=RX DMA activation condition */ + sca_out(0x3C, msci + TFS, card); /* +1 = TX start */ + sca_out(0x38, msci + TCR, card); /* =Critical TX DMA activ condition */ + sca_out(0x38, msci + TNR0, card); /* =TX DMA activation condition */ + sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/ + +/* We're using the following interrupts: + - RXINTA (DCD changes only) + - DMIB (EOM - single frame transfer complete) +*/ + sca_outl(IE0_RXINTA | IE0_CDCD, msci + IE0, card); + + sca_out(port->tmc, msci + TMCR, card); + sca_out(port->tmc, msci + TMCT, card); + sca_out(port->rxs, msci + RXS, card); + sca_out(port->txs, msci + TXS, card); + sca_out(CMD_TX_ENABLE, msci + CMD, card); + sca_out(CMD_RX_ENABLE, msci + CMD, card); + + sca_set_carrier(port); + enable_intr(port); + napi_enable(&port->napi); + netif_start_queue(dev); +} + + +static void sca_close(struct net_device *dev) +{ + port_t *port = dev_to_port(dev); + + /* reset channel */ + sca_out(CMD_RESET, get_msci(port) + CMD, port->card); + disable_intr(port); + napi_disable(&port->napi); + netif_stop_queue(dev); +} + + +static int sca_attach(struct net_device *dev, unsigned short encoding, + unsigned short parity) +{ + if (encoding != ENCODING_NRZ && + encoding != ENCODING_NRZI && + encoding != ENCODING_FM_MARK && + encoding != ENCODING_FM_SPACE && + encoding != ENCODING_MANCHESTER) + return -EINVAL; + + if (parity != PARITY_NONE && + parity != PARITY_CRC16_PR0 && + parity != PARITY_CRC16_PR1 && + parity != PARITY_CRC32_PR1_CCITT && + parity != PARITY_CRC16_PR1_CCITT) + return -EINVAL; + + dev_to_port(dev)->encoding = encoding; + dev_to_port(dev)->parity = parity; + return 0; +} + + +#ifdef DEBUG_RINGS +static void sca_dump_rings(struct net_device *dev) +{ + port_t *port = dev_to_port(dev); + card_t *card = port->card; + u16 cnt; + + printk(KERN_DEBUG "RX ring: CDA=%u EDA=%u DSR=%02X in=%u %sactive", + sca_inl(get_dmac_rx(port) + CDAL, card), + sca_inl(get_dmac_rx(port) + EDAL, card), + sca_in(DSR_RX(port->chan), card), port->rxin, + sca_in(DSR_RX(port->chan), card) & DSR_DE ? "" : "in"); + for (cnt = 0; cnt < port->card->rx_ring_buffers; cnt++) + printk(" %02X", readb(&(desc_address(port, cnt, 0)->stat))); + + printk("\n" KERN_DEBUG "TX ring: CDA=%u EDA=%u DSR=%02X in=%u " + "last=%u %sactive", + sca_inl(get_dmac_tx(port) + CDAL, card), + sca_inl(get_dmac_tx(port) + EDAL, card), + sca_in(DSR_TX(port->chan), card), port->txin, port->txlast, + sca_in(DSR_TX(port->chan), card) & DSR_DE ? "" : "in"); + + for (cnt = 0; cnt < port->card->tx_ring_buffers; cnt++) + printk(" %02X", readb(&(desc_address(port, cnt, 1)->stat))); + printk("\n"); + + printk(KERN_DEBUG "MSCI: MD: %02x %02x %02x," + " ST: %02x %02x %02x %02x %02x, FST: %02x CST: %02x %02x\n", + sca_in(get_msci(port) + MD0, card), + sca_in(get_msci(port) + MD1, card), + sca_in(get_msci(port) + MD2, card), + sca_in(get_msci(port) + ST0, card), + sca_in(get_msci(port) + ST1, card), + sca_in(get_msci(port) + ST2, card), + sca_in(get_msci(port) + ST3, card), + sca_in(get_msci(port) + ST4, card), + sca_in(get_msci(port) + FST, card), + sca_in(get_msci(port) + CST0, card), + sca_in(get_msci(port) + CST1, card)); + + printk(KERN_DEBUG "ILAR: %02x ISR: %08x %08x\n", sca_in(ILAR, card), + sca_inl(ISR0, card), sca_inl(ISR1, card)); +} +#endif /* DEBUG_RINGS */ + + +static int sca_xmit(struct sk_buff *skb, struct net_device *dev) +{ + port_t *port = dev_to_port(dev); + card_t *card = port->card; + pkt_desc __iomem *desc; + u32 buff, len; + + spin_lock_irq(&port->lock); + + desc = desc_address(port, port->txin + 1, 1); + BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */ + +#ifdef DEBUG_PKT + printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len); + debug_frame(skb); +#endif + + desc = desc_address(port, port->txin, 1); + buff = buffer_offset(port, port->txin, 1); + len = skb->len; + memcpy_toio(card->rambase + buff, skb->data, len); + + writew(len, &desc->len); + writeb(ST_TX_EOM, &desc->stat); + dev->trans_start = jiffies; + + port->txin = (port->txin + 1) % card->tx_ring_buffers; + sca_outl(desc_offset(port, port->txin, 1), + get_dmac_tx(port) + EDAL, card); + + sca_out(DSR_DE, DSR_TX(port->chan), card); /* Enable TX DMA */ + + desc = desc_address(port, port->txin + 1, 1); + if (readb(&desc->stat)) /* allow 1 packet gap */ + netif_stop_queue(dev); + + spin_unlock_irq(&port->lock); + + dev_kfree_skb(skb); + return 0; +} + + +static u32 __devinit sca_detect_ram(card_t *card, u8 __iomem *rambase, + u32 ramsize) +{ + /* Round RAM size to 32 bits, fill from end to start */ + u32 i = ramsize &= ~3; + + do { + i -= 4; + writel(i ^ 0x12345678, rambase + i); + } while (i > 0); + + for (i = 0; i < ramsize ; i += 4) { + if (readl(rambase + i) != (i ^ 0x12345678)) + break; + } + + return i; +} + + +static void __devinit sca_init(card_t *card, int wait_states) +{ + sca_out(wait_states, WCRL, card); /* Wait Control */ + sca_out(wait_states, WCRM, card); + sca_out(wait_states, WCRH, card); + + sca_out(0, DMER, card); /* DMA Master disable */ + sca_out(0x03, PCR, card); /* DMA priority */ + sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */ + sca_out(0, DSR_TX(0), card); + sca_out(0, DSR_RX(1), card); + sca_out(0, DSR_TX(1), card); + sca_out(DMER_DME, DMER, card); /* DMA Master enable */ +} diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c index 4efe9e6d32d..72fae217f1c 100644 --- a/drivers/net/wan/hdlc_ppp.c +++ b/drivers/net/wan/hdlc_ppp.c @@ -2,7 +2,7 @@ * Generic HDLC support routines for Linux * Point-to-point protocol support * - * Copyright (C) 1999 - 2006 Krzysztof Halasa <khc@pm.waw.pl> + * Copyright (C) 1999 - 2008 Krzysztof Halasa <khc@pm.waw.pl> * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License @@ -18,87 +18,632 @@ #include <linux/module.h> #include <linux/pkt_sched.h> #include <linux/poll.h> -#include <linux/rtnetlink.h> #include <linux/skbuff.h> #include <linux/slab.h> -#include <net/syncppp.h> +#include <linux/spinlock.h> + +#define DEBUG_CP 0 /* also bytes# to dump */ +#define DEBUG_STATE 0 +#define DEBUG_HARD_HEADER 0 + +#define HDLC_ADDR_ALLSTATIONS 0xFF +#define HDLC_CTRL_UI 0x03 + +#define PID_LCP 0xC021 +#define PID_IP 0x0021 +#define PID_IPCP 0x8021 +#define PID_IPV6 0x0057 +#define PID_IPV6CP 0x8057 + +enum {IDX_LCP = 0, IDX_IPCP, IDX_IPV6CP, IDX_COUNT}; +enum {CP_CONF_REQ = 1, CP_CONF_ACK, CP_CONF_NAK, CP_CONF_REJ, CP_TERM_REQ, + CP_TERM_ACK, CP_CODE_REJ, LCP_PROTO_REJ, LCP_ECHO_REQ, LCP_ECHO_REPLY, + LCP_DISC_REQ, CP_CODES}; +#if DEBUG_CP +static const char *const code_names[CP_CODES] = { + "0", "ConfReq", "ConfAck", "ConfNak", "ConfRej", "TermReq", + "TermAck", "CodeRej", "ProtoRej", "EchoReq", "EchoReply", "Discard" +}; +static char debug_buffer[64 + 3 * DEBUG_CP]; +#endif + +enum {LCP_OPTION_MRU = 1, LCP_OPTION_ACCM, LCP_OPTION_MAGIC = 5}; + +struct hdlc_header { + u8 address; + u8 control; + __be16 protocol; +}; + +struct cp_header { + u8 code; + u8 id; + __be16 len; +}; + -struct ppp_state { - struct ppp_device pppdev; - struct ppp_device *syncppp_ptr; - int (*old_change_mtu)(struct net_device *dev, int new_mtu); +struct proto { + struct net_device *dev; + struct timer_list timer; + unsigned long timeout; + u16 pid; /* protocol ID */ + u8 state; + u8 cr_id; /* ID of last Configuration-Request */ + u8 restart_counter; }; +struct ppp { + struct proto protos[IDX_COUNT]; + spinlock_t lock; + unsigned long last_pong; + unsigned int req_timeout, cr_retries, term_retries; + unsigned int keepalive_interval, keepalive_timeout; + u8 seq; /* local sequence number for requests */ + u8 echo_id; /* ID of last Echo-Request (LCP) */ +}; + +enum {CLOSED = 0, STOPPED, STOPPING, REQ_SENT, ACK_RECV, ACK_SENT, OPENED, + STATES, STATE_MASK = 0xF}; +enum {START = 0, STOP, TO_GOOD, TO_BAD, RCR_GOOD, RCR_BAD, RCA, RCN, RTR, RTA, + RUC, RXJ_GOOD, RXJ_BAD, EVENTS}; +enum {INV = 0x10, IRC = 0x20, ZRC = 0x40, SCR = 0x80, SCA = 0x100, + SCN = 0x200, STR = 0x400, STA = 0x800, SCJ = 0x1000}; + +#if DEBUG_STATE +static const char *const state_names[STATES] = { + "Closed", "Stopped", "Stopping", "ReqSent", "AckRecv", "AckSent", + "Opened" +}; +static const char *const event_names[EVENTS] = { + "Start", "Stop", "TO+", "TO-", "RCR+", "RCR-", "RCA", "RCN", + "RTR", "RTA", "RUC", "RXJ+", "RXJ-" +}; +#endif + +static struct sk_buff_head tx_queue; /* used when holding the spin lock */ + static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr); +static inline struct ppp* get_ppp(struct net_device *dev) +{ + return (struct ppp *)dev_to_hdlc(dev)->state; +} -static inline struct ppp_state* state(hdlc_device *hdlc) +static inline struct proto* get_proto(struct net_device *dev, u16 pid) { - return(struct ppp_state *)(hdlc->state); + struct ppp *ppp = get_ppp(dev); + + switch (pid) { + case PID_LCP: + return &ppp->protos[IDX_LCP]; + case PID_IPCP: + return &ppp->protos[IDX_IPCP]; + case PID_IPV6CP: + return &ppp->protos[IDX_IPV6CP]; + default: + return NULL; + } } +static inline const char* proto_name(u16 pid) +{ + switch (pid) { + case PID_LCP: + return "LCP"; + case PID_IPCP: + return "IPCP"; + case PID_IPV6CP: + return "IPV6CP"; + default: + return NULL; + } +} -static int ppp_open(struct net_device *dev) +static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev) { - hdlc_device *hdlc = dev_to_hdlc(dev); - int (*old_ioctl)(struct net_device *, struct ifreq *, int); - int result; + struct hdlc_header *data = (struct hdlc_header*)skb->data; + + if (skb->len < sizeof(struct hdlc_header)) + return htons(ETH_P_HDLC); + if (data->address != HDLC_ADDR_ALLSTATIONS || + data->control != HDLC_CTRL_UI) + return htons(ETH_P_HDLC); + + switch (data->protocol) { + case __constant_htons(PID_IP): + skb_pull(skb, sizeof(struct hdlc_header)); + return htons(ETH_P_IP); - dev->ml_priv = &state(hdlc)->syncppp_ptr; - state(hdlc)->syncppp_ptr = &state(hdlc)->pppdev; - state(hdlc)->pppdev.dev = dev; + case __constant_htons(PID_IPV6): + skb_pull(skb, sizeof(struct hdlc_header)); + return htons(ETH_P_IPV6); - old_ioctl = dev->do_ioctl; - state(hdlc)->old_change_mtu = dev->change_mtu; - sppp_attach(&state(hdlc)->pppdev); - /* sppp_attach nukes them. We don't need syncppp's ioctl */ - dev->do_ioctl = old_ioctl; - state(hdlc)->pppdev.sppp.pp_flags &= ~PP_CISCO; - dev->type = ARPHRD_PPP; - result = sppp_open(dev); - if (result) { - sppp_detach(dev); - return result; + default: + return htons(ETH_P_HDLC); } +} - return 0; + +static int ppp_hard_header(struct sk_buff *skb, struct net_device *dev, + u16 type, const void *daddr, const void *saddr, + unsigned int len) +{ + struct hdlc_header *data; +#if DEBUG_HARD_HEADER + printk(KERN_DEBUG "%s: ppp_hard_header() called\n", dev->name); +#endif + + skb_push(skb, sizeof(struct hdlc_header)); + data = (struct hdlc_header*)skb->data; + + data->address = HDLC_ADDR_ALLSTATIONS; + data->control = HDLC_CTRL_UI; + switch (type) { + case ETH_P_IP: + data->protocol = htons(PID_IP); + break; + case ETH_P_IPV6: + data->protocol = htons(PID_IPV6); + break; + case PID_LCP: + case PID_IPCP: + case PID_IPV6CP: + data->protocol = htons(type); + break; + default: /* unknown protocol */ + data->protocol = 0; + } + return sizeof(struct hdlc_header); } +static void ppp_tx_flush(void) +{ + struct sk_buff *skb; + while ((skb = skb_dequeue(&tx_queue)) != NULL) + dev_queue_xmit(skb); +} -static void ppp_close(struct net_device *dev) +static void ppp_tx_cp(struct net_device *dev, u16 pid, u8 code, + u8 id, unsigned int len, const void *data) { - hdlc_device *hdlc = dev_to_hdlc(dev); + struct sk_buff *skb; + struct cp_header *cp; + unsigned int magic_len = 0; + static u32 magic; + +#if DEBUG_CP + int i; + char *ptr; +#endif + + if (pid == PID_LCP && (code == LCP_ECHO_REQ || code == LCP_ECHO_REPLY)) + magic_len = sizeof(magic); + + skb = dev_alloc_skb(sizeof(struct hdlc_header) + + sizeof(struct cp_header) + magic_len + len); + if (!skb) { + printk(KERN_WARNING "%s: out of memory in ppp_tx_cp()\n", + dev->name); + return; + } + skb_reserve(skb, sizeof(struct hdlc_header)); + + cp = (struct cp_header *)skb_put(skb, sizeof(struct cp_header)); + cp->code = code; + cp->id = id; + cp->len = htons(sizeof(struct cp_header) + magic_len + len); + + if (magic_len) + memcpy(skb_put(skb, magic_len), &magic, magic_len); + if (len) + memcpy(skb_put(skb, len), data, len); + +#if DEBUG_CP + BUG_ON(code >= CP_CODES); + ptr = debug_buffer; + *ptr = '\x0'; + for (i = 0; i < min_t(unsigned int, magic_len + len, DEBUG_CP); i++) { + sprintf(ptr, " %02X", skb->data[sizeof(struct cp_header) + i]); + ptr += strlen(ptr); + } + printk(KERN_DEBUG "%s: TX %s [%s id 0x%X]%s\n", dev->name, + proto_name(pid), code_names[code], id, debug_buffer); +#endif - sppp_close(dev); - sppp_detach(dev); + ppp_hard_header(skb, dev, pid, NULL, NULL, 0); - dev->change_mtu = state(hdlc)->old_change_mtu; - dev->mtu = HDLC_MAX_MTU; - dev->hard_header_len = 16; + skb->priority = TC_PRIO_CONTROL; + skb->dev = dev; + skb_reset_network_header(skb); + skb_queue_tail(&tx_queue, skb); } +/* State transition table (compare STD-51) + Events Actions + TO+ = Timeout with counter > 0 irc = Initialize-Restart-Count + TO- = Timeout with counter expired zrc = Zero-Restart-Count + + RCR+ = Receive-Configure-Request (Good) scr = Send-Configure-Request + RCR- = Receive-Configure-Request (Bad) + RCA = Receive-Configure-Ack sca = Send-Configure-Ack + RCN = Receive-Configure-Nak/Rej scn = Send-Configure-Nak/Rej + + RTR = Receive-Terminate-Request str = Send-Terminate-Request + RTA = Receive-Terminate-Ack sta = Send-Terminate-Ack + + RUC = Receive-Unknown-Code scj = Send-Code-Reject + RXJ+ = Receive-Code-Reject (permitted) + or Receive-Protocol-Reject + RXJ- = Receive-Code-Reject (catastrophic) + or Receive-Protocol-Reject +*/ +static int cp_table[EVENTS][STATES] = { + /* CLOSED STOPPED STOPPING REQ_SENT ACK_RECV ACK_SENT OPENED + 0 1 2 3 4 5 6 */ + {IRC|SCR|3, INV , INV , INV , INV , INV , INV }, /* START */ + { INV , 0 , 0 , 0 , 0 , 0 , 0 }, /* STOP */ + { INV , INV ,STR|2, SCR|3 ,SCR|3, SCR|5 , INV }, /* TO+ */ + { INV , INV , 1 , 1 , 1 , 1 , INV }, /* TO- */ + { STA|0 ,IRC|SCR|SCA|5, 2 , SCA|5 ,SCA|6, SCA|5 ,SCR|SCA|5}, /* RCR+ */ + { STA|0 ,IRC|SCR|SCN|3, 2 , SCN|3 ,SCN|4, SCN|3 ,SCR|SCN|3}, /* RCR- */ + { STA|0 , STA|1 , 2 , IRC|4 ,SCR|3, 6 , SCR|3 }, /* RCA */ + { STA|0 , STA|1 , 2 ,IRC|SCR|3,SCR|3,IRC|SCR|5, SCR|3 }, /* RCN */ + { STA|0 , STA|1 ,STA|2, STA|3 ,STA|3, STA|3 ,ZRC|STA|2}, /* RTR */ + { 0 , 1 , 1 , 3 , 3 , 5 , SCR|3 }, /* RTA */ + { SCJ|0 , SCJ|1 ,SCJ|2, SCJ|3 ,SCJ|4, SCJ|5 , SCJ|6 }, /* RUC */ + { 0 , 1 , 2 , 3 , 3 , 5 , 6 }, /* RXJ+ */ + { 0 , 1 , 1 , 1 , 1 , 1 ,IRC|STR|2}, /* RXJ- */ +}; + -static __be16 ppp_type_trans(struct sk_buff *skb, struct net_device *dev) +/* SCA: RCR+ must supply id, len and data + SCN: RCR- must supply code, id, len and data + STA: RTR must supply id + SCJ: RUC must supply CP packet len and data */ +static void ppp_cp_event(struct net_device *dev, u16 pid, u16 event, u8 code, + u8 id, unsigned int len, void *data) { - return __constant_htons(ETH_P_WAN_PPP); + int old_state, action; + struct ppp *ppp = get_ppp(dev); + struct proto *proto = get_proto(dev, pid); + + old_state = proto->state; + BUG_ON(old_state >= STATES); + BUG_ON(event >= EVENTS); + +#if DEBUG_STATE + printk(KERN_DEBUG "%s: %s ppp_cp_event(%s) %s ...\n", dev->name, + proto_name(pid), event_names[event], state_names[proto->state]); +#endif + + action = cp_table[event][old_state]; + + proto->state = action & STATE_MASK; + if (action & (SCR | STR)) /* set Configure-Req/Terminate-Req timer */ + mod_timer(&proto->timer, proto->timeout = + jiffies + ppp->req_timeout * HZ); + if (action & ZRC) + proto->restart_counter = 0; + if (action & IRC) + proto->restart_counter = (proto->state == STOPPING) ? + ppp->term_retries : ppp->cr_retries; + + if (action & SCR) /* send Configure-Request */ + ppp_tx_cp(dev, pid, CP_CONF_REQ, proto->cr_id = ++ppp->seq, + 0, NULL); + if (action & SCA) /* send Configure-Ack */ + ppp_tx_cp(dev, pid, CP_CONF_ACK, id, len, data); + if (action & SCN) /* send Configure-Nak/Reject */ + ppp_tx_cp(dev, pid, code, id, len, data); + if (action & STR) /* send Terminate-Request */ + ppp_tx_cp(dev, pid, CP_TERM_REQ, ++ppp->seq, 0, NULL); + if (action & STA) /* send Terminate-Ack */ + ppp_tx_cp(dev, pid, CP_TERM_ACK, id, 0, NULL); + if (action & SCJ) /* send Code-Reject */ + ppp_tx_cp(dev, pid, CP_CODE_REJ, ++ppp->seq, len, data); + + if (old_state != OPENED && proto->state == OPENED) { + printk(KERN_INFO "%s: %s up\n", dev->name, proto_name(pid)); + if (pid == PID_LCP) { + netif_dormant_off(dev); + ppp_cp_event(dev, PID_IPCP, START, 0, 0, 0, NULL); + ppp_cp_event(dev, PID_IPV6CP, START, 0, 0, 0, NULL); + ppp->last_pong = jiffies; + mod_timer(&proto->timer, proto->timeout = + jiffies + ppp->keepalive_interval * HZ); + } + } + if (old_state == OPENED && proto->state != OPENED) { + printk(KERN_INFO "%s: %s down\n", dev->name, proto_name(pid)); + if (pid == PID_LCP) { + netif_dormant_on(dev); + ppp_cp_event(dev, PID_IPCP, STOP, 0, 0, 0, NULL); + ppp_cp_event(dev, PID_IPV6CP, STOP, 0, 0, 0, NULL); + } + } + if (old_state != CLOSED && proto->state == CLOSED) + del_timer(&proto->timer); + +#if DEBUG_STATE + printk(KERN_DEBUG "%s: %s ppp_cp_event(%s) ... %s\n", dev->name, + proto_name(pid), event_names[event], state_names[proto->state]); +#endif } +static void ppp_cp_parse_cr(struct net_device *dev, u16 pid, u8 id, + unsigned int len, u8 *data) +{ + static u8 const valid_accm[6] = { LCP_OPTION_ACCM, 6, 0, 0, 0, 0 }; + u8 *opt, *out; + unsigned int nak_len = 0, rej_len = 0; + + if (!(out = kmalloc(len, GFP_ATOMIC))) { + dev->stats.rx_dropped++; + return; /* out of memory, ignore CR packet */ + } + + for (opt = data; len; len -= opt[1], opt += opt[1]) { + if (len < 2 || len < opt[1]) { + dev->stats.rx_errors++; + return; /* bad packet, drop silently */ + } + + if (pid == PID_LCP) + switch (opt[0]) { + case LCP_OPTION_MRU: + continue; /* MRU always OK and > 1500 bytes? */ + + case LCP_OPTION_ACCM: /* async control character map */ + if (!memcmp(opt, valid_accm, + sizeof(valid_accm))) + continue; + if (!rej_len) { /* NAK it */ + memcpy(out + nak_len, valid_accm, + sizeof(valid_accm)); + nak_len += sizeof(valid_accm); + continue; + } + break; + case LCP_OPTION_MAGIC: + if (opt[1] != 6 || (!opt[2] && !opt[3] && + !opt[4] && !opt[5])) + break; /* reject invalid magic number */ + continue; + } + /* reject this option */ + memcpy(out + rej_len, opt, opt[1]); + rej_len += opt[1]; + } + + if (rej_len) + ppp_cp_event(dev, pid, RCR_BAD, CP_CONF_REJ, id, rej_len, out); + else if (nak_len) + ppp_cp_event(dev, pid, RCR_BAD, CP_CONF_NAK, id, nak_len, out); + else + ppp_cp_event(dev, pid, RCR_GOOD, CP_CONF_ACK, id, len, data); + + kfree(out); +} + +static int ppp_rx(struct sk_buff *skb) +{ + struct hdlc_header *hdr = (struct hdlc_header*)skb->data; + struct net_device *dev = skb->dev; + struct ppp *ppp = get_ppp(dev); + struct proto *proto; + struct cp_header *cp; + unsigned long flags; + unsigned int len; + u16 pid; +#if DEBUG_CP + int i; + char *ptr; +#endif + + spin_lock_irqsave(&ppp->lock, flags); + /* Check HDLC header */ + if (skb->len < sizeof(struct hdlc_header)) + goto rx_error; + cp = (struct cp_header*)skb_pull(skb, sizeof(struct hdlc_header)); + if (hdr->address != HDLC_ADDR_ALLSTATIONS || + hdr->control != HDLC_CTRL_UI) + goto rx_error; + + pid = ntohs(hdr->protocol); + proto = get_proto(dev, pid); + if (!proto) { + if (ppp->protos[IDX_LCP].state == OPENED) + ppp_tx_cp(dev, PID_LCP, LCP_PROTO_REJ, + ++ppp->seq, skb->len + 2, &hdr->protocol); + goto rx_error; + } + + len = ntohs(cp->len); + if (len < sizeof(struct cp_header) /* no complete CP header? */ || + skb->len < len /* truncated packet? */) + goto rx_error; + skb_pull(skb, sizeof(struct cp_header)); + len -= sizeof(struct cp_header); + + /* HDLC and CP headers stripped from skb */ +#if DEBUG_CP + if (cp->code < CP_CODES) + sprintf(debug_buffer, "[%s id 0x%X]", code_names[cp->code], + cp->id); + else + sprintf(debug_buffer, "[code %u id 0x%X]", cp->code, cp->id); + ptr = debug_buffer + strlen(debug_buffer); + for (i = 0; i < min_t(unsigned int, len, DEBUG_CP); i++) { + sprintf(ptr, " %02X", skb->data[i]); + ptr += strlen(ptr); + } + printk(KERN_DEBUG "%s: RX %s %s\n", dev->name, proto_name(pid), + debug_buffer); +#endif + + /* LCP only */ + if (pid == PID_LCP) + switch (cp->code) { + case LCP_PROTO_REJ: + pid = ntohs(*(__be16*)skb->data); + if (pid == PID_LCP || pid == PID_IPCP || + pid == PID_IPV6CP) + ppp_cp_event(dev, pid, RXJ_BAD, 0, 0, + 0, NULL); + goto out; + + case LCP_ECHO_REQ: /* send Echo-Reply */ + if (len >= 4 && proto->state == OPENED) + ppp_tx_cp(dev, PID_LCP, LCP_ECHO_REPLY, + cp->id, len - 4, skb->data + 4); + goto out; + + case LCP_ECHO_REPLY: + if (cp->id == ppp->echo_id) + ppp->last_pong = jiffies; + goto out; + + case LCP_DISC_REQ: /* discard */ + goto out; + } + + /* LCP, IPCP and IPV6CP */ + switch (cp->code) { + case CP_CONF_REQ: + ppp_cp_parse_cr(dev, pid, cp->id, len, skb->data); + goto out; + + case CP_CONF_ACK: + if (cp->id == proto->cr_id) + ppp_cp_event(dev, pid, RCA, 0, 0, 0, NULL); + goto out; + + case CP_CONF_REJ: + case CP_CONF_NAK: + if (cp->id == proto->cr_id) + ppp_cp_event(dev, pid, RCN, 0, 0, 0, NULL); + goto out; + + case CP_TERM_REQ: + ppp_cp_event(dev, pid, RTR, 0, cp->id, 0, NULL); + goto out; + + case CP_TERM_ACK: + ppp_cp_event(dev, pid, RTA, 0, 0, 0, NULL); + goto out; + + case CP_CODE_REJ: + ppp_cp_event(dev, pid, RXJ_BAD, 0, 0, 0, NULL); + goto out; + + default: + len += sizeof(struct cp_header); + if (len > dev->mtu) + len = dev->mtu; + ppp_cp_event(dev, pid, RUC, 0, 0, len, cp); + goto out; + } + goto out; + +rx_error: + dev->stats.rx_errors++; +out: + spin_unlock_irqrestore(&ppp->lock, flags); + dev_kfree_skb_any(skb); + ppp_tx_flush(); + return NET_RX_DROP; +} + + +static void ppp_timer(unsigned long arg) +{ + struct proto *proto = (struct proto *)arg; + struct ppp *ppp = get_ppp(proto->dev); + unsigned long flags; + + spin_lock_irqsave(&ppp->lock, flags); + switch (proto->state) { + case STOPPING: + case REQ_SENT: + case ACK_RECV: + case ACK_SENT: + if (proto->restart_counter) { + ppp_cp_event(proto->dev, proto->pid, TO_GOOD, 0, 0, + 0, NULL); + proto->restart_counter--; + } else + ppp_cp_event(proto->dev, proto->pid, TO_BAD, 0, 0, + 0, NULL); + break; + + case OPENED: + if (proto->pid != PID_LCP) + break; + if (time_after(jiffies, ppp->last_pong + + ppp->keepalive_timeout * HZ)) { + printk(KERN_INFO "%s: Link down\n", proto->dev->name); + ppp_cp_event(proto->dev, PID_LCP, STOP, 0, 0, 0, NULL); + ppp_cp_event(proto->dev, PID_LCP, START, 0, 0, 0, NULL); + } else { /* send keep-alive packet */ + ppp->echo_id = ++ppp->seq; + ppp_tx_cp(proto->dev, PID_LCP, LCP_ECHO_REQ, + ppp->echo_id, 0, NULL); + proto->timer.expires = jiffies + + ppp->keepalive_interval * HZ; + add_timer(&proto->timer); + } + break; + } + spin_unlock_irqrestore(&ppp->lock, flags); + ppp_tx_flush(); +} + + +static void ppp_start(struct net_device *dev) +{ + struct ppp *ppp = get_ppp(dev); + int i; + + for (i = 0; i < IDX_COUNT; i++) { + struct proto *proto = &ppp->protos[i]; + proto->dev = dev; + init_timer(&proto->timer); + proto->timer.function = ppp_timer; + proto->timer.data = (unsigned long)proto; + proto->state = CLOSED; + } + ppp->protos[IDX_LCP].pid = PID_LCP; + ppp->protos[IDX_IPCP].pid = PID_IPCP; + ppp->protos[IDX_IPV6CP].pid = PID_IPV6CP; + + ppp_cp_event(dev, PID_LCP, START, 0, 0, 0, NULL); +} + +static void ppp_stop(struct net_device *dev) +{ + ppp_cp_event(dev, PID_LCP, STOP, 0, 0, 0, NULL); +} static struct hdlc_proto proto = { - .open = ppp_open, - .close = ppp_close, + .start = ppp_start, + .stop = ppp_stop, .type_trans = ppp_type_trans, .ioctl = ppp_ioctl, + .netif_rx = ppp_rx, .module = THIS_MODULE, }; +static const struct header_ops ppp_header_ops = { + .create = ppp_hard_header, +}; static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr) { hdlc_device *hdlc = dev_to_hdlc(dev); + struct ppp *ppp; int result; switch (ifr->ifr_settings.type) { @@ -109,25 +654,35 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr) return 0; /* return protocol only, no settable parameters */ case IF_PROTO_PPP: - if(!capable(CAP_NET_ADMIN)) + if (!capable(CAP_NET_ADMIN)) return -EPERM; - if(dev->flags & IFF_UP) + if (dev->flags & IFF_UP) return -EBUSY; /* no settable parameters */ - result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT); + result = hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT); if (result) return result; - result = attach_hdlc_protocol(dev, &proto, - sizeof(struct ppp_state)); + result = attach_hdlc_protocol(dev, &proto, sizeof(struct ppp)); if (result) return result; + + ppp = get_ppp(dev); + spin_lock_init(&ppp->lock); + ppp->req_timeout = 2; + ppp->cr_retries = 10; + ppp->term_retries = 2; + ppp->keepalive_interval = 10; + ppp->keepalive_timeout = 60; + dev->hard_start_xmit = hdlc->xmit; + dev->hard_header_len = sizeof(struct hdlc_header); + dev->header_ops = &ppp_header_ops; dev->type = ARPHRD_PPP; - netif_dormant_off(dev); + netif_dormant_on(dev); return 0; } @@ -137,12 +692,11 @@ static int ppp_ioctl(struct net_device *dev, struct ifreq *ifr) static int __init mod_init(void) { + skb_queue_head_init(&tx_queue); register_hdlc_protocol(&proto); return 0; } - - static void __exit mod_exit(void) { unregister_hdlc_protocol(&proto); diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c index 0a566b0daac..697715ae80f 100644 --- a/drivers/net/wan/n2.c +++ b/drivers/net/wan/n2.c @@ -53,7 +53,7 @@ static const char* devname = "RISCom/N2"; #define NEED_SCA_MSCI_INTR #define MAX_TX_BUFFERS 10 -static char *hw = NULL; /* pointer to hw=xxx command line string */ +static char *hw; /* pointer to hw=xxx command line string */ /* RISCom/N2 Board Registers */ @@ -145,7 +145,6 @@ static card_t **new_card = &first_card; &(card)->ports[port] : NULL) - static __inline__ u8 sca_get_page(card_t *card) { return inb(card->io + N2_PSR) & PSR_PAGEBITS; @@ -159,9 +158,7 @@ static __inline__ void openwin(card_t *card, u8 page) } - -#include "hd6457x.c" - +#include "hd64570.c" static void n2_set_iface(port_t *port) @@ -478,7 +475,7 @@ static int __init n2_run(unsigned long io, unsigned long irq, n2_destroy_card(card); return -ENOBUFS; } - sca_init_sync_port(port); /* Set up SCA memory */ + sca_init_port(port); /* Set up SCA memory */ printk(KERN_INFO "%s: RISCom/N2 node %d\n", dev->name, port->phy_node); diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c index 22267116522..f247e5d9002 100644 --- a/drivers/net/wan/pc300too.c +++ b/drivers/net/wan/pc300too.c @@ -1,7 +1,7 @@ /* * Cyclades PC300 synchronous serial card driver for Linux * - * Copyright (C) 2000-2007 Krzysztof Halasa <khc@pm.waw.pl> + * Copyright (C) 2000-2008 Krzysztof Halasa <khc@pm.waw.pl> * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License @@ -11,7 +11,7 @@ * * Sources of information: * Hitachi HD64572 SCA-II User's Manual - * Cyclades PC300 Linux driver + * Original Cyclades PC300 Linux driver * * This driver currently supports only PC300/RSV (V.24/V.35) and * PC300/X21 cards. @@ -37,17 +37,11 @@ #include "hd64572.h" -static const char* version = "Cyclades PC300 driver version: 1.17"; -static const char* devname = "PC300"; - #undef DEBUG_PKT #define DEBUG_RINGS #define PC300_PLX_SIZE 0x80 /* PLX control window size (128 B) */ #define PC300_SCA_SIZE 0x400 /* SCA window size (1 KB) */ -#define ALL_PAGES_ALWAYS_MAPPED -#define NEED_DETECT_RAM -#define NEED_SCA_MSCI_INTR #define MAX_TX_BUFFERS 10 static int pci_clock_freq = 33000000; @@ -81,7 +75,8 @@ typedef struct { typedef struct port_s { - struct net_device *dev; + struct napi_struct napi; + struct net_device *netdev; struct card_s *card; spinlock_t lock; /* TX lock */ sync_serial_settings settings; @@ -93,7 +88,7 @@ typedef struct port_s { u16 txin; /* tx ring buffer 'in' and 'last' pointers */ u16 txlast; u8 rxs, txs, tmc; /* SCA registers */ - u8 phy_node; /* physical port # - 0 or 1 */ + u8 chan; /* physical port # - 0 or 1 */ }port_t; @@ -114,21 +109,10 @@ typedef struct card_s { }card_t; -#define sca_in(reg, card) readb(card->scabase + (reg)) -#define sca_out(value, reg, card) writeb(value, card->scabase + (reg)) -#define sca_inw(reg, card) readw(card->scabase + (reg)) -#define sca_outw(value, reg, card) writew(value, card->scabase + (reg)) -#define sca_inl(reg, card) readl(card->scabase + (reg)) -#define sca_outl(value, reg, card) writel(value, card->scabase + (reg)) - -#define port_to_card(port) (port->card) -#define log_node(port) (port->phy_node) -#define phy_node(port) (port->phy_node) -#define winbase(card) (card->rambase) #define get_port(card, port) ((port) < (card)->n_ports ? \ (&(card)->ports[port]) : (NULL)) -#include "hd6457x.c" +#include "hd64572.c" static void pc300_set_iface(port_t *port) @@ -139,8 +123,8 @@ static void pc300_set_iface(port_t *port) u8 rxs = port->rxs & CLK_BRG_MASK; u8 txs = port->txs & CLK_BRG_MASK; - sca_out(EXS_TES1, (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, - port_to_card(port)); + sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, + port->card); switch(port->settings.clock_type) { case CLOCK_INT: rxs |= CLK_BRG; /* BRG output */ @@ -172,10 +156,10 @@ static void pc300_set_iface(port_t *port) if (port->card->type == PC300_RSV) { if (port->iface == IF_IFACE_V35) writel(card->init_ctrl_value | - PC300_CHMEDIA_MASK(port->phy_node), init_ctrl); + PC300_CHMEDIA_MASK(port->chan), init_ctrl); else writel(card->init_ctrl_value & - ~PC300_CHMEDIA_MASK(port->phy_node), init_ctrl); + ~PC300_CHMEDIA_MASK(port->chan), init_ctrl); } } @@ -280,10 +264,8 @@ static void pc300_pci_remove_one(struct pci_dev *pdev) card_t *card = pci_get_drvdata(pdev); for (i = 0; i < 2; i++) - if (card->ports[i].card) { - struct net_device *dev = port_to_dev(&card->ports[i]); - unregister_hdlc_device(dev); - } + if (card->ports[i].card) + unregister_hdlc_device(card->ports[i].netdev); if (card->irq) free_irq(card->irq, card); @@ -298,10 +280,10 @@ static void pc300_pci_remove_one(struct pci_dev *pdev) pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); - if (card->ports[0].dev) - free_netdev(card->ports[0].dev); - if (card->ports[1].dev) - free_netdev(card->ports[1].dev); + if (card->ports[0].netdev) + free_netdev(card->ports[0].netdev); + if (card->ports[1].netdev) + free_netdev(card->ports[1].netdev); kfree(card); } @@ -318,12 +300,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, u32 scaphys; /* SCA memory base */ u32 plxphys; /* PLX registers memory base */ -#ifndef MODULE - static int printed_version; - if (!printed_version++) - printk(KERN_INFO "%s\n", version); -#endif - i = pci_enable_device(pdev); if (i) return i; @@ -343,27 +319,6 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, } pci_set_drvdata(pdev, card); - if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 || - pdev->device == PCI_DEVICE_ID_PC300_TE_2) - card->type = PC300_TE; /* not fully supported */ - else if (card->init_ctrl_value & PC300_CTYPE_MASK) - card->type = PC300_X21; - else - card->type = PC300_RSV; - - if (pdev->device == PCI_DEVICE_ID_PC300_RX_1 || - pdev->device == PCI_DEVICE_ID_PC300_TE_1) - card->n_ports = 1; - else - card->n_ports = 2; - - for (i = 0; i < card->n_ports; i++) - if (!(card->ports[i].dev = alloc_hdlcdev(&card->ports[i]))) { - printk(KERN_ERR "pc300: unable to allocate memory\n"); - pc300_pci_remove_one(pdev); - return -ENOMEM; - } - if (pci_resource_len(pdev, 0) != PC300_PLX_SIZE || pci_resource_len(pdev, 2) != PC300_SCA_SIZE || pci_resource_len(pdev, 3) < 16384) { @@ -372,13 +327,13 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, return -EFAULT; } - plxphys = pci_resource_start(pdev,0) & PCI_BASE_ADDRESS_MEM_MASK; + plxphys = pci_resource_start(pdev, 0) & PCI_BASE_ADDRESS_MEM_MASK; card->plxbase = ioremap(plxphys, PC300_PLX_SIZE); - scaphys = pci_resource_start(pdev,2) & PCI_BASE_ADDRESS_MEM_MASK; + scaphys = pci_resource_start(pdev, 2) & PCI_BASE_ADDRESS_MEM_MASK; card->scabase = ioremap(scaphys, PC300_SCA_SIZE); - ramphys = pci_resource_start(pdev,3) & PCI_BASE_ADDRESS_MEM_MASK; + ramphys = pci_resource_start(pdev, 3) & PCI_BASE_ADDRESS_MEM_MASK; card->rambase = pci_ioremap_bar(pdev, 3); if (card->plxbase == NULL || @@ -393,6 +348,27 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, card->init_ctrl_value = readl(&((plx9050 __iomem *)card->scabase)->init_ctrl); pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, plxphys); + if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 || + pdev->device == PCI_DEVICE_ID_PC300_TE_2) + card->type = PC300_TE; /* not fully supported */ + else if (card->init_ctrl_value & PC300_CTYPE_MASK) + card->type = PC300_X21; + else + card->type = PC300_RSV; + + if (pdev->device == PCI_DEVICE_ID_PC300_RX_1 || + pdev->device == PCI_DEVICE_ID_PC300_TE_1) + card->n_ports = 1; + else + card->n_ports = 2; + + for (i = 0; i < card->n_ports; i++) + if (!(card->ports[i].netdev = alloc_hdlcdev(&card->ports[i]))) { + printk(KERN_ERR "pc300: unable to allocate memory\n"); + pc300_pci_remove_one(pdev); + return -ENOMEM; + } + /* Reset PLX */ p = &card->plxbase->init_ctrl; writel(card->init_ctrl_value | 0x40000000, p); @@ -446,7 +422,7 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, writew(0x0041, &card->plxbase->intr_ctrl_stat); /* Allocate IRQ */ - if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, devname, card)) { + if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pc300", card)) { printk(KERN_WARNING "pc300: could not allocate IRQ%d.\n", pdev->irq); pc300_pci_remove_one(pdev); @@ -463,9 +439,9 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, for (i = 0; i < card->n_ports; i++) { port_t *port = &card->ports[i]; - struct net_device *dev = port_to_dev(port); + struct net_device *dev = port->netdev; hdlc_device *hdlc = dev_to_hdlc(dev); - port->phy_node = i; + port->chan = i; spin_lock_init(&port->lock); dev->irq = card->irq; @@ -484,6 +460,7 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, else port->iface = IF_IFACE_V35; + sca_init_port(port); if (register_hdlc_device(dev)) { printk(KERN_ERR "pc300: unable to register hdlc " "device\n"); @@ -491,10 +468,9 @@ static int __devinit pc300_pci_init_one(struct pci_dev *pdev, pc300_pci_remove_one(pdev); return -ENOBUFS; } - sca_init_sync_port(port); /* Set up SCA memory */ - printk(KERN_INFO "%s: PC300 node %d\n", - dev->name, port->phy_node); + printk(KERN_INFO "%s: PC300 channel %d\n", + dev->name, port->chan); } return 0; } @@ -524,9 +500,6 @@ static struct pci_driver pc300_pci_driver = { static int __init pc300_init_module(void) { -#ifdef MODULE - printk(KERN_INFO "%s\n", version); -#endif if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { printk(KERN_ERR "pc300: Invalid PCI clock frequency\n"); return -EINVAL; diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c index bba111cdeeb..1104d3a692f 100644 --- a/drivers/net/wan/pci200syn.c +++ b/drivers/net/wan/pci200syn.c @@ -1,7 +1,7 @@ /* * Goramo PCI200SYN synchronous serial card driver for Linux * - * Copyright (C) 2002-2003 Krzysztof Halasa <khc@pm.waw.pl> + * Copyright (C) 2002-2008 Krzysztof Halasa <khc@pm.waw.pl> * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License @@ -33,17 +33,11 @@ #include "hd64572.h" -static const char* version = "Goramo PCI200SYN driver version: 1.16"; -static const char* devname = "PCI200SYN"; - #undef DEBUG_PKT #define DEBUG_RINGS #define PCI200SYN_PLX_SIZE 0x80 /* PLX control window size (128b) */ #define PCI200SYN_SCA_SIZE 0x400 /* SCA window size (1Kb) */ -#define ALL_PAGES_ALWAYS_MAPPED -#define NEED_DETECT_RAM -#define NEED_SCA_MSCI_INTR #define MAX_TX_BUFFERS 10 static int pci_clock_freq = 33000000; @@ -68,7 +62,8 @@ typedef struct { typedef struct port_s { - struct net_device *dev; + struct napi_struct napi; + struct net_device *netdev; struct card_s *card; spinlock_t lock; /* TX lock */ sync_serial_settings settings; @@ -79,7 +74,7 @@ typedef struct port_s { u16 txin; /* tx ring buffer 'in' and 'last' pointers */ u16 txlast; u8 rxs, txs, tmc; /* SCA registers */ - u8 phy_node; /* physical port # - 0 or 1 */ + u8 chan; /* physical port # - 0 or 1 */ }port_t; @@ -97,17 +92,6 @@ typedef struct card_s { }card_t; -#define sca_in(reg, card) readb(card->scabase + (reg)) -#define sca_out(value, reg, card) writeb(value, card->scabase + (reg)) -#define sca_inw(reg, card) readw(card->scabase + (reg)) -#define sca_outw(value, reg, card) writew(value, card->scabase + (reg)) -#define sca_inl(reg, card) readl(card->scabase + (reg)) -#define sca_outl(value, reg, card) writel(value, card->scabase + (reg)) - -#define port_to_card(port) (port->card) -#define log_node(port) (port->phy_node) -#define phy_node(port) (port->phy_node) -#define winbase(card) (card->rambase) #define get_port(card, port) (&card->ports[port]) #define sca_flush(card) (sca_in(IER0, card)); @@ -127,7 +111,7 @@ static inline void new_memcpy_toio(char __iomem *dest, char *src, int length) #undef memcpy_toio #define memcpy_toio new_memcpy_toio -#include "hd6457x.c" +#include "hd64572.c" static void pci200_set_iface(port_t *port) @@ -137,8 +121,8 @@ static void pci200_set_iface(port_t *port) u8 rxs = port->rxs & CLK_BRG_MASK; u8 txs = port->txs & CLK_BRG_MASK; - sca_out(EXS_TES1, (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, - port_to_card(port)); + sca_out(EXS_TES1, (port->chan ? MSCI1_OFFSET : MSCI0_OFFSET) + EXS, + port->card); switch(port->settings.clock_type) { case CLOCK_INT: rxs |= CLK_BRG; /* BRG output */ @@ -180,7 +164,7 @@ static int pci200_open(struct net_device *dev) sca_open(dev); pci200_set_iface(port); - sca_flush(port_to_card(port)); + sca_flush(port->card); return 0; } @@ -189,7 +173,7 @@ static int pci200_open(struct net_device *dev) static int pci200_close(struct net_device *dev) { sca_close(dev); - sca_flush(port_to_card(dev_to_port(dev))); + sca_flush(dev_to_port(dev)->card); hdlc_close(dev); return 0; } @@ -242,7 +226,7 @@ static int pci200_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) memcpy(&port->settings, &new_line, size); /* Update settings */ pci200_set_iface(port); - sca_flush(port_to_card(port)); + sca_flush(port->card); return 0; default: @@ -258,10 +242,8 @@ static void pci200_pci_remove_one(struct pci_dev *pdev) card_t *card = pci_get_drvdata(pdev); for (i = 0; i < 2; i++) - if (card->ports[i].card) { - struct net_device *dev = port_to_dev(&card->ports[i]); - unregister_hdlc_device(dev); - } + if (card->ports[i].card) + unregister_hdlc_device(card->ports[i].netdev); if (card->irq) free_irq(card->irq, card); @@ -276,10 +258,10 @@ static void pci200_pci_remove_one(struct pci_dev *pdev) pci_release_regions(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); - if (card->ports[0].dev) - free_netdev(card->ports[0].dev); - if (card->ports[1].dev) - free_netdev(card->ports[1].dev); + if (card->ports[0].netdev) + free_netdev(card->ports[0].netdev); + if (card->ports[1].netdev) + free_netdev(card->ports[1].netdev); kfree(card); } @@ -296,12 +278,6 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, u32 scaphys; /* SCA memory base */ u32 plxphys; /* PLX registers memory base */ -#ifndef MODULE - static int printed_version; - if (!printed_version++) - printk(KERN_INFO "%s\n", version); -#endif - i = pci_enable_device(pdev); if (i) return i; @@ -320,9 +296,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, return -ENOBUFS; } pci_set_drvdata(pdev, card); - card->ports[0].dev = alloc_hdlcdev(&card->ports[0]); - card->ports[1].dev = alloc_hdlcdev(&card->ports[1]); - if (!card->ports[0].dev || !card->ports[1].dev) { + card->ports[0].netdev = alloc_hdlcdev(&card->ports[0]); + card->ports[1].netdev = alloc_hdlcdev(&card->ports[1]); + if (!card->ports[0].netdev || !card->ports[1].netdev) { printk(KERN_ERR "pci200syn: unable to allocate memory\n"); pci200_pci_remove_one(pdev); return -ENOMEM; @@ -398,7 +374,7 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, writew(readw(p) | 0x0040, p); /* Allocate IRQ */ - if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, devname, card)) { + if (request_irq(pdev->irq, sca_intr, IRQF_SHARED, "pci200syn", card)) { printk(KERN_WARNING "pci200syn: could not allocate IRQ%d.\n", pdev->irq); pci200_pci_remove_one(pdev); @@ -410,9 +386,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, for (i = 0; i < 2; i++) { port_t *port = &card->ports[i]; - struct net_device *dev = port_to_dev(port); + struct net_device *dev = port->netdev; hdlc_device *hdlc = dev_to_hdlc(dev); - port->phy_node = i; + port->chan = i; spin_lock_init(&port->lock); dev->irq = card->irq; @@ -426,6 +402,7 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, hdlc->xmit = sca_xmit; port->settings.clock_type = CLOCK_EXT; port->card = card; + sca_init_port(port); if (register_hdlc_device(dev)) { printk(KERN_ERR "pci200syn: unable to register hdlc " "device\n"); @@ -433,10 +410,9 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev, pci200_pci_remove_one(pdev); return -ENOBUFS; } - sca_init_sync_port(port); /* Set up SCA memory */ - printk(KERN_INFO "%s: PCI200SYN node %d\n", - dev->name, port->phy_node); + printk(KERN_INFO "%s: PCI200SYN channel %d\n", + dev->name, port->chan); } sca_flush(card); @@ -464,9 +440,6 @@ static struct pci_driver pci200_pci_driver = { static int __init pci200_init_module(void) { -#ifdef MODULE - printk(KERN_INFO "%s\n", version); -#endif if (pci_clock_freq < 1000000 || pci_clock_freq > 80000000) { printk(KERN_ERR "pci200syn: Invalid PCI clock frequency\n"); return -EINVAL; diff --git a/drivers/net/wan/syncppp.c b/drivers/net/wan/syncppp.c deleted file mode 100644 index 58ae8a2223a..00000000000 --- a/drivers/net/wan/syncppp.c +++ /dev/null @@ -1,1476 +0,0 @@ -/* - * NET3: A (fairly minimal) implementation of synchronous PPP for Linux - * as well as a CISCO HDLC implementation. See the copyright - * message below for the original source. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the license, or (at your option) any later version. - * - * Note however. This code is also used in a different form by FreeBSD. - * Therefore when making any non OS specific change please consider - * contributing it back to the original author under the terms - * below in addition. - * -- Alan - * - * Port for Linux-2.1 by Jan "Yenya" Kasprzak <kas@fi.muni.cz> - */ - -/* - * Synchronous PPP/Cisco link level subroutines. - * Keepalive protocol implemented in both Cisco and PPP modes. - * - * Copyright (C) 1994 Cronyx Ltd. - * Author: Serge Vakulenko, <vak@zebub.msk.su> - * - * This software is distributed with NO WARRANTIES, not even the implied - * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * Authors grant any other persons or organisations permission to use - * or modify this software as long as this message is kept with the software, - * all derivative works or modified versions. - * - * Version 1.9, Wed Oct 4 18:58:15 MSK 1995 - * - * $Id: syncppp.c,v 1.18 2000/04/11 05:25:31 asj Exp $ - */ -#undef DEBUG - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/if_arp.h> -#include <linux/skbuff.h> -#include <linux/route.h> -#include <linux/netdevice.h> -#include <linux/inetdevice.h> -#include <linux/random.h> -#include <linux/pkt_sched.h> -#include <linux/spinlock.h> -#include <linux/rcupdate.h> - -#include <net/net_namespace.h> -#include <net/syncppp.h> - -#include <asm/byteorder.h> -#include <asm/uaccess.h> - -#define MAXALIVECNT 6 /* max. alive packets */ - -#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */ -#define PPP_UI 0x03 /* Unnumbered Information */ -#define PPP_IP 0x0021 /* Internet Protocol */ -#define PPP_ISO 0x0023 /* ISO OSI Protocol */ -#define PPP_XNS 0x0025 /* Xerox NS Protocol */ -#define PPP_IPX 0x002b /* Novell IPX Protocol */ -#define PPP_LCP 0xc021 /* Link Control Protocol */ -#define PPP_IPCP 0x8021 /* Internet Protocol Control Protocol */ - -#define LCP_CONF_REQ 1 /* PPP LCP configure request */ -#define LCP_CONF_ACK 2 /* PPP LCP configure acknowledge */ -#define LCP_CONF_NAK 3 /* PPP LCP configure negative ack */ -#define LCP_CONF_REJ 4 /* PPP LCP configure reject */ -#define LCP_TERM_REQ 5 /* PPP LCP terminate request */ -#define LCP_TERM_ACK 6 /* PPP LCP terminate acknowledge */ -#define LCP_CODE_REJ 7 /* PPP LCP code reject */ -#define LCP_PROTO_REJ 8 /* PPP LCP protocol reject */ -#define LCP_ECHO_REQ 9 /* PPP LCP echo request */ -#define LCP_ECHO_REPLY 10 /* PPP LCP echo reply */ -#define LCP_DISC_REQ 11 /* PPP LCP discard request */ - -#define LCP_OPT_MRU 1 /* maximum receive unit */ -#define LCP_OPT_ASYNC_MAP 2 /* async control character map */ -#define LCP_OPT_AUTH_PROTO 3 /* authentication protocol */ -#define LCP_OPT_QUAL_PROTO 4 /* quality protocol */ -#define LCP_OPT_MAGIC 5 /* magic number */ -#define LCP_OPT_RESERVED 6 /* reserved */ -#define LCP_OPT_PROTO_COMP 7 /* protocol field compression */ -#define LCP_OPT_ADDR_COMP 8 /* address/control field compression */ - -#define IPCP_CONF_REQ LCP_CONF_REQ /* PPP IPCP configure request */ -#define IPCP_CONF_ACK LCP_CONF_ACK /* PPP IPCP configure acknowledge */ -#define IPCP_CONF_NAK LCP_CONF_NAK /* PPP IPCP configure negative ack */ -#define IPCP_CONF_REJ LCP_CONF_REJ /* PPP IPCP configure reject */ -#define IPCP_TERM_REQ LCP_TERM_REQ /* PPP IPCP terminate request */ -#define IPCP_TERM_ACK LCP_TERM_ACK /* PPP IPCP terminate acknowledge */ -#define IPCP_CODE_REJ LCP_CODE_REJ /* PPP IPCP code reject */ - -#define CISCO_MULTICAST 0x8f /* Cisco multicast address */ -#define CISCO_UNICAST 0x0f /* Cisco unicast address */ -#define CISCO_KEEPALIVE 0x8035 /* Cisco keepalive protocol */ -#define CISCO_ADDR_REQ 0 /* Cisco address request */ -#define CISCO_ADDR_REPLY 1 /* Cisco address reply */ -#define CISCO_KEEPALIVE_REQ 2 /* Cisco keepalive request */ - -struct ppp_header { - u8 address; - u8 control; - __be16 protocol; -}; -#define PPP_HEADER_LEN sizeof (struct ppp_header) - -struct lcp_header { - u8 type; - u8 ident; - __be16 len; -}; -#define LCP_HEADER_LEN sizeof (struct lcp_header) - -struct cisco_packet { - __be32 type; - __be32 par1; - __be32 par2; - __be16 rel; - __be16 time0; - __be16 time1; -}; -#define CISCO_PACKET_LEN 18 -#define CISCO_BIG_PACKET_LEN 20 - -static struct sppp *spppq; -static struct timer_list sppp_keepalive_timer; -static DEFINE_SPINLOCK(spppq_lock); - -/* global xmit queue for sending packets while spinlock is held */ -static struct sk_buff_head tx_queue; - -static void sppp_keepalive (unsigned long dummy); -static void sppp_cp_send (struct sppp *sp, u16 proto, u8 type, - u8 ident, u16 len, void *data); -static void sppp_cisco_send (struct sppp *sp, int type, u32 par1, u32 par2); -static void sppp_lcp_input (struct sppp *sp, struct sk_buff *m); -static void sppp_cisco_input (struct sppp *sp, struct sk_buff *m); -static void sppp_ipcp_input (struct sppp *sp, struct sk_buff *m); -static void sppp_lcp_open (struct sppp *sp); -static void sppp_ipcp_open (struct sppp *sp); -static int sppp_lcp_conf_parse_options (struct sppp *sp, struct lcp_header *h, - int len, u32 *magic); -static void sppp_cp_timeout (unsigned long arg); -static char *sppp_lcp_type_name (u8 type); -static char *sppp_ipcp_type_name (u8 type); -static void sppp_print_bytes (u8 *p, u16 len); - -static int debug; - -/* Flush global outgoing packet queue to dev_queue_xmit(). - * - * dev_queue_xmit() must be called with interrupts enabled - * which means it can't be called with spinlocks held. - * If a packet needs to be sent while a spinlock is held, - * then put the packet into tx_queue, and call sppp_flush_xmit() - * after spinlock is released. - */ -static void sppp_flush_xmit(void) -{ - struct sk_buff *skb; - while ((skb = skb_dequeue(&tx_queue)) != NULL) - dev_queue_xmit(skb); -} - -/* - * Interface down stub - */ - -static void if_down(struct net_device *dev) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - - sp->pp_link_state=SPPP_LINK_DOWN; -} - -/* - * Timeout routine activations. - */ - -static void sppp_set_timeout(struct sppp *p,int s) -{ - if (! (p->pp_flags & PP_TIMO)) - { - init_timer(&p->pp_timer); - p->pp_timer.function=sppp_cp_timeout; - p->pp_timer.expires=jiffies+s*HZ; - p->pp_timer.data=(unsigned long)p; - p->pp_flags |= PP_TIMO; - add_timer(&p->pp_timer); - } -} - -static void sppp_clear_timeout(struct sppp *p) -{ - if (p->pp_flags & PP_TIMO) - { - del_timer(&p->pp_timer); - p->pp_flags &= ~PP_TIMO; - } -} - -/** - * sppp_input - receive and process a WAN PPP frame - * @skb: The buffer to process - * @dev: The device it arrived on - * - * This can be called directly by cards that do not have - * timing constraints but is normally called from the network layer - * after interrupt servicing to process frames queued via netif_rx(). - * - * We process the options in the card. If the frame is destined for - * the protocol stacks then it requeues the frame for the upper level - * protocol. If it is a control from it is processed and discarded - * here. - */ - -static void sppp_input (struct net_device *dev, struct sk_buff *skb) -{ - struct ppp_header *h; - struct sppp *sp = (struct sppp *)sppp_of(dev); - unsigned long flags; - - skb->dev=dev; - skb_reset_mac_header(skb); - - if (!pskb_may_pull(skb, PPP_HEADER_LEN)) { - /* Too small packet, drop it. */ - if (sp->pp_flags & PP_DEBUG) - printk (KERN_DEBUG "%s: input packet is too small, %d bytes\n", - dev->name, skb->len); - kfree_skb(skb); - return; - } - - /* Get PPP header. */ - h = (struct ppp_header *)skb->data; - skb_pull(skb,sizeof(struct ppp_header)); - - spin_lock_irqsave(&sp->lock, flags); - - switch (h->address) { - default: /* Invalid PPP packet. */ - goto invalid; - case PPP_ALLSTATIONS: - if (h->control != PPP_UI) - goto invalid; - if (sp->pp_flags & PP_CISCO) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: PPP packet in Cisco mode <0x%x 0x%x 0x%x>\n", - dev->name, - h->address, h->control, ntohs (h->protocol)); - goto drop; - } - switch (ntohs (h->protocol)) { - default: - if (sp->lcp.state == LCP_STATE_OPENED) - sppp_cp_send (sp, PPP_LCP, LCP_PROTO_REJ, - ++sp->pp_seq, skb->len + 2, - &h->protocol); - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid input protocol <0x%x 0x%x 0x%x>\n", - dev->name, - h->address, h->control, ntohs (h->protocol)); - goto drop; - case PPP_LCP: - sppp_lcp_input (sp, skb); - goto drop; - case PPP_IPCP: - if (sp->lcp.state == LCP_STATE_OPENED) - sppp_ipcp_input (sp, skb); - else - printk(KERN_DEBUG "IPCP when still waiting LCP finish.\n"); - goto drop; - case PPP_IP: - if (sp->ipcp.state == IPCP_STATE_OPENED) { - if(sp->pp_flags&PP_DEBUG) - printk(KERN_DEBUG "Yow an IP frame.\n"); - skb->protocol=htons(ETH_P_IP); - netif_rx(skb); - goto done; - } - break; -#ifdef IPX - case PPP_IPX: - /* IPX IPXCP not implemented yet */ - if (sp->lcp.state == LCP_STATE_OPENED) { - skb->protocol=htons(ETH_P_IPX); - netif_rx(skb); - goto done; - } - break; -#endif - } - break; - case CISCO_MULTICAST: - case CISCO_UNICAST: - /* Don't check the control field here (RFC 1547). */ - if (! (sp->pp_flags & PP_CISCO)) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: Cisco packet in PPP mode <0x%x 0x%x 0x%x>\n", - dev->name, - h->address, h->control, ntohs (h->protocol)); - goto drop; - } - switch (ntohs (h->protocol)) { - default: - goto invalid; - case CISCO_KEEPALIVE: - sppp_cisco_input (sp, skb); - goto drop; -#ifdef CONFIG_INET - case ETH_P_IP: - skb->protocol=htons(ETH_P_IP); - netif_rx(skb); - goto done; -#endif -#ifdef CONFIG_IPX - case ETH_P_IPX: - skb->protocol=htons(ETH_P_IPX); - netif_rx(skb); - goto done; -#endif - } - break; - } - goto drop; - -invalid: - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid input packet <0x%x 0x%x 0x%x>\n", - dev->name, h->address, h->control, ntohs (h->protocol)); -drop: - kfree_skb(skb); -done: - spin_unlock_irqrestore(&sp->lock, flags); - sppp_flush_xmit(); - return; -} - -/* - * Handle transmit packets. - */ - -static int sppp_hard_header(struct sk_buff *skb, - struct net_device *dev, __u16 type, - const void *daddr, const void *saddr, - unsigned int len) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - struct ppp_header *h; - skb_push(skb,sizeof(struct ppp_header)); - h=(struct ppp_header *)skb->data; - if(sp->pp_flags&PP_CISCO) - { - h->address = CISCO_UNICAST; - h->control = 0; - } - else - { - h->address = PPP_ALLSTATIONS; - h->control = PPP_UI; - } - if(sp->pp_flags & PP_CISCO) - { - h->protocol = htons(type); - } - else switch(type) - { - case ETH_P_IP: - h->protocol = htons(PPP_IP); - break; - case ETH_P_IPX: - h->protocol = htons(PPP_IPX); - break; - } - return sizeof(struct ppp_header); -} - -static const struct header_ops sppp_header_ops = { - .create = sppp_hard_header, -}; - -/* - * Send keepalive packets, every 10 seconds. - */ - -static void sppp_keepalive (unsigned long dummy) -{ - struct sppp *sp; - unsigned long flags; - - spin_lock_irqsave(&spppq_lock, flags); - - for (sp=spppq; sp; sp=sp->pp_next) - { - struct net_device *dev = sp->pp_if; - - /* Keepalive mode disabled or channel down? */ - if (! (sp->pp_flags & PP_KEEPALIVE) || - ! (dev->flags & IFF_UP)) - continue; - - spin_lock(&sp->lock); - - /* No keepalive in PPP mode if LCP not opened yet. */ - if (! (sp->pp_flags & PP_CISCO) && - sp->lcp.state != LCP_STATE_OPENED) { - spin_unlock(&sp->lock); - continue; - } - - if (sp->pp_alivecnt == MAXALIVECNT) { - /* No keepalive packets got. Stop the interface. */ - printk (KERN_WARNING "%s: protocol down\n", dev->name); - if_down (dev); - if (! (sp->pp_flags & PP_CISCO)) { - /* Shut down the PPP link. */ - sp->lcp.magic = jiffies; - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - sppp_clear_timeout (sp); - /* Initiate negotiation. */ - sppp_lcp_open (sp); - } - } - if (sp->pp_alivecnt <= MAXALIVECNT) - ++sp->pp_alivecnt; - if (sp->pp_flags & PP_CISCO) - sppp_cisco_send (sp, CISCO_KEEPALIVE_REQ, ++sp->pp_seq, - sp->pp_rseq); - else if (sp->lcp.state == LCP_STATE_OPENED) { - __be32 nmagic = htonl (sp->lcp.magic); - sp->lcp.echoid = ++sp->pp_seq; - sppp_cp_send (sp, PPP_LCP, LCP_ECHO_REQ, - sp->lcp.echoid, 4, &nmagic); - } - - spin_unlock(&sp->lock); - } - spin_unlock_irqrestore(&spppq_lock, flags); - sppp_flush_xmit(); - sppp_keepalive_timer.expires=jiffies+10*HZ; - add_timer(&sppp_keepalive_timer); -} - -/* - * Handle incoming PPP Link Control Protocol packets. - */ - -static void sppp_lcp_input (struct sppp *sp, struct sk_buff *skb) -{ - struct lcp_header *h; - struct net_device *dev = sp->pp_if; - int len = skb->len; - u8 *p, opt[6]; - u32 rmagic = 0; - - if (!pskb_may_pull(skb, sizeof(struct lcp_header))) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid lcp packet length: %d bytes\n", - dev->name, len); - return; - } - h = (struct lcp_header *)skb->data; - skb_pull(skb,sizeof(struct lcp_header *)); - - if (sp->pp_flags & PP_DEBUG) - { - char state = '?'; - switch (sp->lcp.state) { - case LCP_STATE_CLOSED: state = 'C'; break; - case LCP_STATE_ACK_RCVD: state = 'R'; break; - case LCP_STATE_ACK_SENT: state = 'S'; break; - case LCP_STATE_OPENED: state = 'O'; break; - } - printk (KERN_WARNING "%s: lcp input(%c): %d bytes <%s id=%xh len=%xh", - dev->name, state, len, - sppp_lcp_type_name (h->type), h->ident, ntohs (h->len)); - if (len > 4) - sppp_print_bytes ((u8*) (h+1), len-4); - printk (">\n"); - } - if (len > ntohs (h->len)) - len = ntohs (h->len); - switch (h->type) { - default: - /* Unknown packet type -- send Code-Reject packet. */ - sppp_cp_send (sp, PPP_LCP, LCP_CODE_REJ, ++sp->pp_seq, - skb->len, h); - break; - case LCP_CONF_REQ: - if (len < 4) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_DEBUG"%s: invalid lcp configure request packet length: %d bytes\n", - dev->name, len); - break; - } - if (len>4 && !sppp_lcp_conf_parse_options (sp, h, len, &rmagic)) - goto badreq; - if (rmagic == sp->lcp.magic) { - /* Local and remote magics equal -- loopback? */ - if (sp->pp_loopcnt >= MAXALIVECNT*5) { - printk (KERN_WARNING "%s: loopback\n", - dev->name); - sp->pp_loopcnt = 0; - if (dev->flags & IFF_UP) { - if_down (dev); - } - } else if (sp->pp_flags & PP_DEBUG) - printk (KERN_DEBUG "%s: conf req: magic glitch\n", - dev->name); - ++sp->pp_loopcnt; - - /* MUST send Conf-Nack packet. */ - rmagic = ~sp->lcp.magic; - opt[0] = LCP_OPT_MAGIC; - opt[1] = sizeof (opt); - opt[2] = rmagic >> 24; - opt[3] = rmagic >> 16; - opt[4] = rmagic >> 8; - opt[5] = rmagic; - sppp_cp_send (sp, PPP_LCP, LCP_CONF_NAK, - h->ident, sizeof (opt), &opt); -badreq: - switch (sp->lcp.state) { - case LCP_STATE_OPENED: - /* Initiate renegotiation. */ - sppp_lcp_open (sp); - /* fall through... */ - case LCP_STATE_ACK_SENT: - /* Go to closed state. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - } - break; - } - /* Send Configure-Ack packet. */ - sp->pp_loopcnt = 0; - if (sp->lcp.state != LCP_STATE_OPENED) { - sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK, - h->ident, len-4, h+1); - } - /* Change the state. */ - switch (sp->lcp.state) { - case LCP_STATE_CLOSED: - sp->lcp.state = LCP_STATE_ACK_SENT; - break; - case LCP_STATE_ACK_RCVD: - sp->lcp.state = LCP_STATE_OPENED; - sppp_ipcp_open (sp); - break; - case LCP_STATE_OPENED: - /* Remote magic changed -- close session. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - /* Initiate renegotiation. */ - sppp_lcp_open (sp); - /* Send ACK after our REQ in attempt to break loop */ - sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK, - h->ident, len-4, h+1); - sp->lcp.state = LCP_STATE_ACK_SENT; - break; - } - break; - case LCP_CONF_ACK: - if (h->ident != sp->lcp.confid) - break; - sppp_clear_timeout (sp); - if ((sp->pp_link_state != SPPP_LINK_UP) && - (dev->flags & IFF_UP)) { - /* Coming out of loopback mode. */ - sp->pp_link_state=SPPP_LINK_UP; - printk (KERN_INFO "%s: protocol up\n", dev->name); - } - switch (sp->lcp.state) { - case LCP_STATE_CLOSED: - sp->lcp.state = LCP_STATE_ACK_RCVD; - sppp_set_timeout (sp, 5); - break; - case LCP_STATE_ACK_SENT: - sp->lcp.state = LCP_STATE_OPENED; - sppp_ipcp_open (sp); - break; - } - break; - case LCP_CONF_NAK: - if (h->ident != sp->lcp.confid) - break; - p = (u8*) (h+1); - if (len>=10 && p[0] == LCP_OPT_MAGIC && p[1] >= 4) { - rmagic = (u32)p[2] << 24 | - (u32)p[3] << 16 | p[4] << 8 | p[5]; - if (rmagic == ~sp->lcp.magic) { - int newmagic; - if (sp->pp_flags & PP_DEBUG) - printk (KERN_DEBUG "%s: conf nak: magic glitch\n", - dev->name); - get_random_bytes(&newmagic, sizeof(newmagic)); - sp->lcp.magic += newmagic; - } else - sp->lcp.magic = rmagic; - } - if (sp->lcp.state != LCP_STATE_ACK_SENT) { - /* Go to closed state. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - } - /* The link will be renegotiated after timeout, - * to avoid endless req-nack loop. */ - sppp_clear_timeout (sp); - sppp_set_timeout (sp, 2); - break; - case LCP_CONF_REJ: - if (h->ident != sp->lcp.confid) - break; - sppp_clear_timeout (sp); - /* Initiate renegotiation. */ - sppp_lcp_open (sp); - if (sp->lcp.state != LCP_STATE_ACK_SENT) { - /* Go to closed state. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - } - break; - case LCP_TERM_REQ: - sppp_clear_timeout (sp); - /* Send Terminate-Ack packet. */ - sppp_cp_send (sp, PPP_LCP, LCP_TERM_ACK, h->ident, 0, NULL); - /* Go to closed state. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - /* Initiate renegotiation. */ - sppp_lcp_open (sp); - break; - case LCP_TERM_ACK: - case LCP_CODE_REJ: - case LCP_PROTO_REJ: - /* Ignore for now. */ - break; - case LCP_DISC_REQ: - /* Discard the packet. */ - break; - case LCP_ECHO_REQ: - if (sp->lcp.state != LCP_STATE_OPENED) - break; - if (len < 8) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid lcp echo request packet length: %d bytes\n", - dev->name, len); - break; - } - if (ntohl (*(__be32*)(h+1)) == sp->lcp.magic) { - /* Line loopback mode detected. */ - printk (KERN_WARNING "%s: loopback\n", dev->name); - if_down (dev); - - /* Shut down the PPP link. */ - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - sppp_clear_timeout (sp); - /* Initiate negotiation. */ - sppp_lcp_open (sp); - break; - } - *(__be32 *)(h+1) = htonl (sp->lcp.magic); - sppp_cp_send (sp, PPP_LCP, LCP_ECHO_REPLY, h->ident, len-4, h+1); - break; - case LCP_ECHO_REPLY: - if (h->ident != sp->lcp.echoid) - break; - if (len < 8) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid lcp echo reply packet length: %d bytes\n", - dev->name, len); - break; - } - if (ntohl(*(__be32 *)(h+1)) != sp->lcp.magic) - sp->pp_alivecnt = 0; - break; - } -} - -/* - * Handle incoming Cisco keepalive protocol packets. - */ - -static void sppp_cisco_input (struct sppp *sp, struct sk_buff *skb) -{ - struct cisco_packet *h; - struct net_device *dev = sp->pp_if; - - if (!pskb_may_pull(skb, sizeof(struct cisco_packet)) - || (skb->len != CISCO_PACKET_LEN - && skb->len != CISCO_BIG_PACKET_LEN)) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid cisco packet length: %d bytes\n", - dev->name, skb->len); - return; - } - h = (struct cisco_packet *)skb->data; - skb_pull(skb, sizeof(struct cisco_packet*)); - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: cisco input: %d bytes <%xh %xh %xh %xh %xh-%xh>\n", - dev->name, skb->len, - ntohl (h->type), h->par1, h->par2, h->rel, - h->time0, h->time1); - switch (ntohl (h->type)) { - default: - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: unknown cisco packet type: 0x%x\n", - dev->name, ntohl (h->type)); - break; - case CISCO_ADDR_REPLY: - /* Reply on address request, ignore */ - break; - case CISCO_KEEPALIVE_REQ: - sp->pp_alivecnt = 0; - sp->pp_rseq = ntohl (h->par1); - if (sp->pp_seq == sp->pp_rseq) { - /* Local and remote sequence numbers are equal. - * Probably, the line is in loopback mode. */ - int newseq; - if (sp->pp_loopcnt >= MAXALIVECNT) { - printk (KERN_WARNING "%s: loopback\n", - dev->name); - sp->pp_loopcnt = 0; - if (dev->flags & IFF_UP) { - if_down (dev); - } - } - ++sp->pp_loopcnt; - - /* Generate new local sequence number */ - get_random_bytes(&newseq, sizeof(newseq)); - sp->pp_seq ^= newseq; - break; - } - sp->pp_loopcnt = 0; - if (sp->pp_link_state==SPPP_LINK_DOWN && - (dev->flags & IFF_UP)) { - sp->pp_link_state=SPPP_LINK_UP; - printk (KERN_INFO "%s: protocol up\n", dev->name); - } - break; - case CISCO_ADDR_REQ: - /* Stolen from net/ipv4/devinet.c -- SIOCGIFADDR ioctl */ - { - __be32 addr = 0, mask = htonl(~0U); /* FIXME: is the mask correct? */ -#ifdef CONFIG_INET - struct in_device *in_dev; - struct in_ifaddr *ifa; - - rcu_read_lock(); - if ((in_dev = __in_dev_get_rcu(dev)) != NULL) - { - for (ifa=in_dev->ifa_list; ifa != NULL; - ifa=ifa->ifa_next) { - if (strcmp(dev->name, ifa->ifa_label) == 0) - { - addr = ifa->ifa_local; - mask = ifa->ifa_mask; - break; - } - } - } - rcu_read_unlock(); -#endif - sppp_cisco_send (sp, CISCO_ADDR_REPLY, ntohl(addr), ntohl(mask)); - break; - } - } -} - - -/* - * Send PPP LCP packet. - */ - -static void sppp_cp_send (struct sppp *sp, u16 proto, u8 type, - u8 ident, u16 len, void *data) -{ - struct ppp_header *h; - struct lcp_header *lh; - struct sk_buff *skb; - struct net_device *dev = sp->pp_if; - - skb=alloc_skb(dev->hard_header_len+PPP_HEADER_LEN+LCP_HEADER_LEN+len, - GFP_ATOMIC); - if (skb==NULL) - return; - - skb_reserve(skb,dev->hard_header_len); - - h = (struct ppp_header *)skb_put(skb, sizeof(struct ppp_header)); - h->address = PPP_ALLSTATIONS; /* broadcast address */ - h->control = PPP_UI; /* Unnumbered Info */ - h->protocol = htons (proto); /* Link Control Protocol */ - - lh = (struct lcp_header *)skb_put(skb, sizeof(struct lcp_header)); - lh->type = type; - lh->ident = ident; - lh->len = htons (LCP_HEADER_LEN + len); - - if (len) - memcpy(skb_put(skb,len),data, len); - - if (sp->pp_flags & PP_DEBUG) { - printk (KERN_WARNING "%s: %s output <%s id=%xh len=%xh", - dev->name, - proto==PPP_LCP ? "lcp" : "ipcp", - proto==PPP_LCP ? sppp_lcp_type_name (lh->type) : - sppp_ipcp_type_name (lh->type), lh->ident, - ntohs (lh->len)); - if (len) - sppp_print_bytes ((u8*) (lh+1), len); - printk (">\n"); - } - /* Control is high priority so it doesn't get queued behind data */ - skb->priority=TC_PRIO_CONTROL; - skb->dev = dev; - skb_queue_tail(&tx_queue, skb); -} - -/* - * Send Cisco keepalive packet. - */ - -static void sppp_cisco_send (struct sppp *sp, int type, u32 par1, u32 par2) -{ - struct ppp_header *h; - struct cisco_packet *ch; - struct sk_buff *skb; - struct net_device *dev = sp->pp_if; - u32 t = jiffies * 1000/HZ; - - skb=alloc_skb(dev->hard_header_len+PPP_HEADER_LEN+CISCO_PACKET_LEN, - GFP_ATOMIC); - - if(skb==NULL) - return; - - skb_reserve(skb, dev->hard_header_len); - h = (struct ppp_header *)skb_put (skb, sizeof(struct ppp_header)); - h->address = CISCO_MULTICAST; - h->control = 0; - h->protocol = htons (CISCO_KEEPALIVE); - - ch = (struct cisco_packet*)skb_put(skb, CISCO_PACKET_LEN); - ch->type = htonl (type); - ch->par1 = htonl (par1); - ch->par2 = htonl (par2); - ch->rel = htons(0xffff); - ch->time0 = htons ((u16) (t >> 16)); - ch->time1 = htons ((u16) t); - - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: cisco output: <%xh %xh %xh %xh %xh-%xh>\n", - dev->name, ntohl (ch->type), ch->par1, - ch->par2, ch->rel, ch->time0, ch->time1); - skb->priority=TC_PRIO_CONTROL; - skb->dev = dev; - skb_queue_tail(&tx_queue, skb); -} - -/** - * sppp_close - close down a synchronous PPP or Cisco HDLC link - * @dev: The network device to drop the link of - * - * This drops the logical interface to the channel. It is not - * done politely as we assume we will also be dropping DTR. Any - * timeouts are killed. - */ - -int sppp_close (struct net_device *dev) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - unsigned long flags; - - spin_lock_irqsave(&sp->lock, flags); - sp->pp_link_state = SPPP_LINK_DOWN; - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - sppp_clear_timeout (sp); - spin_unlock_irqrestore(&sp->lock, flags); - - return 0; -} - -EXPORT_SYMBOL(sppp_close); - -/** - * sppp_open - open a synchronous PPP or Cisco HDLC link - * @dev: Network device to activate - * - * Close down any existing synchronous session and commence - * from scratch. In the PPP case this means negotiating LCP/IPCP - * and friends, while for Cisco HDLC we simply need to start sending - * keepalives - */ - -int sppp_open (struct net_device *dev) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - unsigned long flags; - - sppp_close(dev); - - spin_lock_irqsave(&sp->lock, flags); - if (!(sp->pp_flags & PP_CISCO)) { - sppp_lcp_open (sp); - } - sp->pp_link_state = SPPP_LINK_DOWN; - spin_unlock_irqrestore(&sp->lock, flags); - sppp_flush_xmit(); - - return 0; -} - -EXPORT_SYMBOL(sppp_open); - -/** - * sppp_reopen - notify of physical link loss - * @dev: Device that lost the link - * - * This function informs the synchronous protocol code that - * the underlying link died (for example a carrier drop on X.21) - * - * We increment the magic numbers to ensure that if the other end - * failed to notice we will correctly start a new session. It happens - * do to the nature of telco circuits is that you can lose carrier on - * one endonly. - * - * Having done this we go back to negotiating. This function may - * be called from an interrupt context. - */ - -int sppp_reopen (struct net_device *dev) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - unsigned long flags; - - sppp_close(dev); - - spin_lock_irqsave(&sp->lock, flags); - if (!(sp->pp_flags & PP_CISCO)) - { - sp->lcp.magic = jiffies; - ++sp->pp_seq; - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - /* Give it a moment for the line to settle then go */ - sppp_set_timeout (sp, 1); - } - sp->pp_link_state=SPPP_LINK_DOWN; - spin_unlock_irqrestore(&sp->lock, flags); - - return 0; -} - -EXPORT_SYMBOL(sppp_reopen); - -/** - * sppp_change_mtu - Change the link MTU - * @dev: Device to change MTU on - * @new_mtu: New MTU - * - * Change the MTU on the link. This can only be called with - * the link down. It returns an error if the link is up or - * the mtu is out of range. - */ - -static int sppp_change_mtu(struct net_device *dev, int new_mtu) -{ - if(new_mtu<128||new_mtu>PPP_MTU||(dev->flags&IFF_UP)) - return -EINVAL; - dev->mtu=new_mtu; - return 0; -} - -/** - * sppp_do_ioctl - Ioctl handler for ppp/hdlc - * @dev: Device subject to ioctl - * @ifr: Interface request block from the user - * @cmd: Command that is being issued - * - * This function handles the ioctls that may be issued by the user - * to control the settings of a PPP/HDLC link. It does both busy - * and security checks. This function is intended to be wrapped by - * callers who wish to add additional ioctl calls of their own. - */ - -int sppp_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct sppp *sp = (struct sppp *)sppp_of(dev); - - if(dev->flags&IFF_UP) - return -EBUSY; - - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - - switch(cmd) - { - case SPPPIOCCISCO: - sp->pp_flags|=PP_CISCO; - dev->type = ARPHRD_HDLC; - break; - case SPPPIOCPPP: - sp->pp_flags&=~PP_CISCO; - dev->type = ARPHRD_PPP; - break; - case SPPPIOCDEBUG: - sp->pp_flags&=~PP_DEBUG; - if(ifr->ifr_flags) - sp->pp_flags|=PP_DEBUG; - break; - case SPPPIOCGFLAGS: - if(copy_to_user(ifr->ifr_data, &sp->pp_flags, sizeof(sp->pp_flags))) - return -EFAULT; - break; - case SPPPIOCSFLAGS: - if(copy_from_user(&sp->pp_flags, ifr->ifr_data, sizeof(sp->pp_flags))) - return -EFAULT; - break; - default: - return -EINVAL; - } - return 0; -} - -EXPORT_SYMBOL(sppp_do_ioctl); - -/** - * sppp_attach - attach synchronous PPP/HDLC to a device - * @pd: PPP device to initialise - * - * This initialises the PPP/HDLC support on an interface. At the - * time of calling the dev element must point to the network device - * that this interface is attached to. The interface should not yet - * be registered. - */ - -void sppp_attach(struct ppp_device *pd) -{ - struct net_device *dev = pd->dev; - struct sppp *sp = &pd->sppp; - unsigned long flags; - - /* Make sure embedding is safe for sppp_of */ - BUG_ON(sppp_of(dev) != sp); - - spin_lock_irqsave(&spppq_lock, flags); - /* Initialize keepalive handler. */ - if (! spppq) - { - init_timer(&sppp_keepalive_timer); - sppp_keepalive_timer.expires=jiffies+10*HZ; - sppp_keepalive_timer.function=sppp_keepalive; - add_timer(&sppp_keepalive_timer); - } - /* Insert new entry into the keepalive list. */ - sp->pp_next = spppq; - spppq = sp; - spin_unlock_irqrestore(&spppq_lock, flags); - - sp->pp_loopcnt = 0; - sp->pp_alivecnt = 0; - sp->pp_seq = 0; - sp->pp_rseq = 0; - sp->pp_flags = PP_KEEPALIVE|PP_CISCO|debug;/*PP_DEBUG;*/ - sp->lcp.magic = 0; - sp->lcp.state = LCP_STATE_CLOSED; - sp->ipcp.state = IPCP_STATE_CLOSED; - sp->pp_if = dev; - spin_lock_init(&sp->lock); - - /* - * Device specific setup. All but interrupt handler and - * hard_start_xmit. - */ - - dev->header_ops = &sppp_header_ops; - - dev->tx_queue_len = 10; - dev->type = ARPHRD_HDLC; - dev->addr_len = 0; - dev->hard_header_len = sizeof(struct ppp_header); - dev->mtu = PPP_MTU; - /* - * These 4 are callers but MUST also call sppp_ functions - */ - dev->do_ioctl = sppp_do_ioctl; -#if 0 - dev->get_stats = NULL; /* Let the driver override these */ - dev->open = sppp_open; - dev->stop = sppp_close; -#endif - dev->change_mtu = sppp_change_mtu; - dev->flags = IFF_MULTICAST|IFF_POINTOPOINT|IFF_NOARP; -} - -EXPORT_SYMBOL(sppp_attach); - -/** - * sppp_detach - release PPP resources from a device - * @dev: Network device to release - * - * Stop and free up any PPP/HDLC resources used by this - * interface. This must be called before the device is - * freed. - */ - -void sppp_detach (struct net_device *dev) -{ - struct sppp **q, *p, *sp = (struct sppp *)sppp_of(dev); - unsigned long flags; - - spin_lock_irqsave(&spppq_lock, flags); - /* Remove the entry from the keepalive list. */ - for (q = &spppq; (p = *q); q = &p->pp_next) - if (p == sp) { - *q = p->pp_next; - break; - } - - /* Stop keepalive handler. */ - if (! spppq) - del_timer(&sppp_keepalive_timer); - sppp_clear_timeout (sp); - spin_unlock_irqrestore(&spppq_lock, flags); -} - -EXPORT_SYMBOL(sppp_detach); - -/* - * Analyze the LCP Configure-Request options list - * for the presence of unknown options. - * If the request contains unknown options, build and - * send Configure-reject packet, containing only unknown options. - */ -static int -sppp_lcp_conf_parse_options (struct sppp *sp, struct lcp_header *h, - int len, u32 *magic) -{ - u8 *buf, *r, *p; - int rlen; - - len -= 4; - buf = r = kmalloc (len, GFP_ATOMIC); - if (! buf) - return (0); - - p = (void*) (h+1); - for (rlen=0; len>1 && p[1]; len-=p[1], p+=p[1]) { - switch (*p) { - case LCP_OPT_MAGIC: - /* Magic number -- extract. */ - if (len >= 6 && p[1] == 6) { - *magic = (u32)p[2] << 24 | - (u32)p[3] << 16 | p[4] << 8 | p[5]; - continue; - } - break; - case LCP_OPT_ASYNC_MAP: - /* Async control character map -- check to be zero. */ - if (len >= 6 && p[1] == 6 && ! p[2] && ! p[3] && - ! p[4] && ! p[5]) - continue; - break; - case LCP_OPT_MRU: - /* Maximum receive unit -- always OK. */ - continue; - default: - /* Others not supported. */ - break; - } - /* Add the option to rejected list. */ - memcpy(r, p, p[1]); - r += p[1]; - rlen += p[1]; - } - if (rlen) - sppp_cp_send (sp, PPP_LCP, LCP_CONF_REJ, h->ident, rlen, buf); - kfree(buf); - return (rlen == 0); -} - -static void sppp_ipcp_input (struct sppp *sp, struct sk_buff *skb) -{ - struct lcp_header *h; - struct net_device *dev = sp->pp_if; - int len = skb->len; - - if (!pskb_may_pull(skb, sizeof(struct lcp_header))) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid ipcp packet length: %d bytes\n", - dev->name, len); - return; - } - h = (struct lcp_header *)skb->data; - skb_pull(skb,sizeof(struct lcp_header)); - if (sp->pp_flags & PP_DEBUG) { - printk (KERN_WARNING "%s: ipcp input: %d bytes <%s id=%xh len=%xh", - dev->name, len, - sppp_ipcp_type_name (h->type), h->ident, ntohs (h->len)); - if (len > 4) - sppp_print_bytes ((u8*) (h+1), len-4); - printk (">\n"); - } - if (len > ntohs (h->len)) - len = ntohs (h->len); - switch (h->type) { - default: - /* Unknown packet type -- send Code-Reject packet. */ - sppp_cp_send (sp, PPP_IPCP, IPCP_CODE_REJ, ++sp->pp_seq, len, h); - break; - case IPCP_CONF_REQ: - if (len < 4) { - if (sp->pp_flags & PP_DEBUG) - printk (KERN_WARNING "%s: invalid ipcp configure request packet length: %d bytes\n", - dev->name, len); - return; - } - if (len > 4) { - sppp_cp_send (sp, PPP_IPCP, LCP_CONF_REJ, h->ident, - len-4, h+1); - - switch (sp->ipcp.state) { - case IPCP_STATE_OPENED: - /* Initiate renegotiation. */ - sppp_ipcp_open (sp); - /* fall through... */ - case IPCP_STATE_ACK_SENT: - /* Go to closed state. */ - sp->ipcp.state = IPCP_STATE_CLOSED; - } - } else { - /* Send Configure-Ack packet. */ - sppp_cp_send (sp, PPP_IPCP, IPCP_CONF_ACK, h->ident, - 0, NULL); - /* Change the state. */ - if (sp->ipcp.state == IPCP_STATE_ACK_RCVD) - sp->ipcp.state = IPCP_STATE_OPENED; - else - sp->ipcp.state = IPCP_STATE_ACK_SENT; - } - break; - case IPCP_CONF_ACK: - if (h->ident != sp->ipcp.confid) - break; - sppp_clear_timeout (sp); - switch (sp->ipcp.state) { - case IPCP_STATE_CLOSED: - sp->ipcp.state = IPCP_STATE_ACK_RCVD; - sppp_set_timeout (sp, 5); - break; - case IPCP_STATE_ACK_SENT: - sp->ipcp.state = IPCP_STATE_OPENED; - break; - } - break; - case IPCP_CONF_NAK: - case IPCP_CONF_REJ: - if (h->ident != sp->ipcp.confid) - break; - sppp_clear_timeout (sp); - /* Initiate renegotiation. */ - sppp_ipcp_open (sp); - if (sp->ipcp.state != IPCP_STATE_ACK_SENT) - /* Go to closed state. */ - sp->ipcp.state = IPCP_STATE_CLOSED; - break; - case IPCP_TERM_REQ: - /* Send Terminate-Ack packet. */ - sppp_cp_send (sp, PPP_IPCP, IPCP_TERM_ACK, h->ident, 0, NULL); - /* Go to closed state. */ - sp->ipcp.state = IPCP_STATE_CLOSED; - /* Initiate renegotiation. */ - sppp_ipcp_open (sp); - break; - case IPCP_TERM_ACK: - /* Ignore for now. */ - case IPCP_CODE_REJ: - /* Ignore for now. */ - break; - } -} - -static void sppp_lcp_open (struct sppp *sp) -{ - char opt[6]; - - if (! sp->lcp.magic) - sp->lcp.magic = jiffies; - opt[0] = LCP_OPT_MAGIC; - opt[1] = sizeof (opt); - opt[2] = sp->lcp.magic >> 24; - opt[3] = sp->lcp.magic >> 16; - opt[4] = sp->lcp.magic >> 8; - opt[5] = sp->lcp.magic; - sp->lcp.confid = ++sp->pp_seq; - sppp_cp_send (sp, PPP_LCP, LCP_CONF_REQ, sp->lcp.confid, - sizeof (opt), &opt); - sppp_set_timeout (sp, 2); -} - -static void sppp_ipcp_open (struct sppp *sp) -{ - sp->ipcp.confid = ++sp->pp_seq; - sppp_cp_send (sp, PPP_IPCP, IPCP_CONF_REQ, sp->ipcp.confid, 0, NULL); - sppp_set_timeout (sp, 2); -} - -/* - * Process PPP control protocol timeouts. - */ - -static void sppp_cp_timeout (unsigned long arg) -{ - struct sppp *sp = (struct sppp*) arg; - unsigned long flags; - - spin_lock_irqsave(&sp->lock, flags); - - sp->pp_flags &= ~PP_TIMO; - if (! (sp->pp_if->flags & IFF_UP) || (sp->pp_flags & PP_CISCO)) { - spin_unlock_irqrestore(&sp->lock, flags); - return; - } - switch (sp->lcp.state) { - case LCP_STATE_CLOSED: - /* No ACK for Configure-Request, retry. */ - sppp_lcp_open (sp); - break; - case LCP_STATE_ACK_RCVD: - /* ACK got, but no Configure-Request for peer, retry. */ - sppp_lcp_open (sp); - sp->lcp.state = LCP_STATE_CLOSED; - break; - case LCP_STATE_ACK_SENT: - /* ACK sent but no ACK for Configure-Request, retry. */ - sppp_lcp_open (sp); - break; - case LCP_STATE_OPENED: - /* LCP is already OK, try IPCP. */ - switch (sp->ipcp.state) { - case IPCP_STATE_CLOSED: - /* No ACK for Configure-Request, retry. */ - sppp_ipcp_open (sp); - break; - case IPCP_STATE_ACK_RCVD: - /* ACK got, but no Configure-Request for peer, retry. */ - sppp_ipcp_open (sp); - sp->ipcp.state = IPCP_STATE_CLOSED; - break; - case IPCP_STATE_ACK_SENT: - /* ACK sent but no ACK for Configure-Request, retry. */ - sppp_ipcp_open (sp); - break; - case IPCP_STATE_OPENED: - /* IPCP is OK. */ - break; - } - break; - } - spin_unlock_irqrestore(&sp->lock, flags); - sppp_flush_xmit(); -} - -static char *sppp_lcp_type_name (u8 type) -{ - static char buf [8]; - switch (type) { - case LCP_CONF_REQ: return ("conf-req"); - case LCP_CONF_ACK: return ("conf-ack"); - case LCP_CONF_NAK: return ("conf-nack"); - case LCP_CONF_REJ: return ("conf-rej"); - case LCP_TERM_REQ: return ("term-req"); - case LCP_TERM_ACK: return ("term-ack"); - case LCP_CODE_REJ: return ("code-rej"); - case LCP_PROTO_REJ: return ("proto-rej"); - case LCP_ECHO_REQ: return ("echo-req"); - case LCP_ECHO_REPLY: return ("echo-reply"); - case LCP_DISC_REQ: return ("discard-req"); - } - sprintf (buf, "%xh", type); - return (buf); -} - -static char *sppp_ipcp_type_name (u8 type) -{ - static char buf [8]; - switch (type) { - case IPCP_CONF_REQ: return ("conf-req"); - case IPCP_CONF_ACK: return ("conf-ack"); - case IPCP_CONF_NAK: return ("conf-nack"); - case IPCP_CONF_REJ: return ("conf-rej"); - case IPCP_TERM_REQ: return ("term-req"); - case IPCP_TERM_ACK: return ("term-ack"); - case IPCP_CODE_REJ: return ("code-rej"); - } - sprintf (buf, "%xh", type); - return (buf); -} - -static void sppp_print_bytes (u_char *p, u16 len) -{ - printk (" %x", *p++); - while (--len > 0) - printk ("-%x", *p++); -} - -/** - * sppp_rcv - receive and process a WAN PPP frame - * @skb: The buffer to process - * @dev: The device it arrived on - * @p: Unused - * @orig_dev: Unused - * - * Protocol glue. This drives the deferred processing mode the poorer - * cards use. This can be called directly by cards that do not have - * timing constraints but is normally called from the network layer - * after interrupt servicing to process frames queued via netif_rx. - */ - -static int sppp_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *p, struct net_device *orig_dev) -{ - if (dev_net(dev) != &init_net) { - kfree_skb(skb); - return 0; - } - - if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) - return NET_RX_DROP; - sppp_input(dev,skb); - return 0; -} - -static struct packet_type sppp_packet_type = { - .type = __constant_htons(ETH_P_WAN_PPP), - .func = sppp_rcv, -}; - -static char banner[] __initdata = - KERN_INFO "Cronyx Ltd, Synchronous PPP and CISCO HDLC (c) 1994\n" - KERN_INFO "Linux port (c) 1998 Building Number Three Ltd & " - "Jan \"Yenya\" Kasprzak.\n"; - -static int __init sync_ppp_init(void) -{ - if(debug) - debug=PP_DEBUG; - printk(banner); - skb_queue_head_init(&tx_queue); - dev_add_pack(&sppp_packet_type); - return 0; -} - - -static void __exit sync_ppp_cleanup(void) -{ - dev_remove_pack(&sppp_packet_type); -} - -module_init(sync_ppp_init); -module_exit(sync_ppp_cleanup); -module_param(debug, int, 0); -MODULE_LICENSE("GPL"); - |