litmus-rt.git - The LITMUS^RT kernel.

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author	Arnd Bergmann <arnd@arndb.de>	2009-11-26 01:07:09 -0500
committer	David S. Miller <davem@davemloft.net>	2009-11-26 18:53:02 -0500
commit	a1e514c5d0397b5581721aad9b303f7df83b103d (patch)
tree	8a4da00850ff4e153aead21baab749f8d5994497 /mm/vmstat.c
parent	445409602c09219767c06497c0dc2285eac244ed (diff)

macvlan: cleanup rx statistics

We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>

Diffstat (limited to 'mm/vmstat.c')

0 files changed, 0 insertions, 0 deletions

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/* * ni6510 (am7990 'lance' chip) driver for Linux-net-3 * BETAcode v0.71 (96/09/29) for 2.0.0 (or later) * copyrights (c) 1994,1995,1996 by M.Hipp * * This driver can handle the old ni6510 board and the newer ni6510 * EtherBlaster. (probably it also works with every full NE2100 * compatible card) * * To compile as module, type: * gcc -O2 -fomit-frame-pointer -m486 -D__KERNEL__ -DMODULE -c ni65.c * driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 * * This is an extension to the Linux operating system, and is covered by the * same GNU General Public License that covers the Linux-kernel. * * comments/bugs/suggestions can be sent to: * Michael Hipp * email: hippm@informatik.uni-tuebingen.de * * sources: * some things are from the 'ni6510-packet-driver for dos by Russ Nelson' * and from the original drivers by D.Becker * * known problems: * - on some PCI boards (including my own) the card/board/ISA-bridge has * problems with bus master DMA. This results in lotsa overruns. * It may help to '#define RCV_PARANOIA_CHECK' or try to #undef * the XMT and RCV_VIA_SKB option .. this reduces driver performance. * Or just play with your BIOS options to optimize ISA-DMA access. * Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE * defines -> please report me your experience then * - Harald reported for ASUS SP3G mainboards, that you should use * the 'optimal settings' from the user's manual on page 3-12! * * credits: * thanx to Jason Sullivan for sending me a ni6510 card! * lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig * * simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) * average: FTP -> 8384421 bytes received in 8.5 seconds * (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) * peak: FTP -> 8384421 bytes received in 7.5 seconds * (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) */ /* * 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) * 96.Sept.29: virt_to_bus stuff added for new memory modell * 96.April.29: Added Harald Koenig's Patches (MH) * 96.April.13: enhanced error handling .. more tests (MH) * 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) * 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) * 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) * hopefully no more 16MB limit * * 95.Nov.18: multicast tweaked (AC). * * 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) * * 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) */ #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/module.h> #include <linux/bitops.h> #include <asm/io.h> #include <asm/dma.h> #include "ni65.h" /* * the current setting allows an acceptable performance * for 'RCV_PARANOIA_CHECK' read the 'known problems' part in * the header of this file * 'invert' the defines for max. performance. This may cause DMA problems * on some boards (e.g on my ASUS SP3G) */ #undef XMT_VIA_SKB #undef RCV_VIA_SKB #define RCV_PARANOIA_CHECK #define MID_PERFORMANCE #if defined( LOW_PERFORMANCE ) static int isa0=7,isa1=7,csr80=0x0c10; #elif defined( MID_PERFORMANCE ) static int isa0=5,isa1=5,csr80=0x2810; #else /* high performance */ static int isa0=4,isa1=4,csr80=0x0017; #endif /* * a few card/vendor specific defines */ #define NI65_ID0 0x00 #define NI65_ID1 0x55 #define NI65_EB_ID0 0x52 #define NI65_EB_ID1 0x44 #define NE2100_ID0 0x57 #define NE2100_ID1 0x57 #define PORT p->cmdr_addr /* * buffer configuration */ #if 1 #define RMDNUM 16 #define RMDNUMMASK 0x80000000 #else #define RMDNUM 8 #define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ #endif #if 0 #define TMDNUM 1 #define TMDNUMMASK 0x00000000 #else #define TMDNUM 4 #define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ #endif /* slightly oversized */ #define R_BUF_SIZE 1544 #define T_BUF_SIZE 1544 /* * lance register defines */ #define L_DATAREG 0x00 #define L_ADDRREG 0x02 #define L_RESET 0x04 #define L_CONFIG 0x05 #define L_BUSIF 0x06 /* * to access the lance/am7990-regs, you have to write * reg-number into L_ADDRREG, then you can access it using L_DATAREG */ #define CSR0 0x00 #define CSR1 0x01 #define CSR2 0x02 #define CSR3 0x03 #define INIT_RING_BEFORE_START 0x1 #define FULL_RESET_ON_ERROR 0x2 #if 0 #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ inw(PORT+L_DATAREG)) #if 0 #define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} #else #define writedatareg(val) { writereg(val,CSR0); } #endif #else #define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} #define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) #define writedatareg(val) { writereg(val,CSR0); } #endif static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; static struct card { unsigned char id0,id1; short id_offset; short total_size; short cmd_offset; short addr_offset; unsigned char *vendor_id; char *cardname; long config; } cards[] = { { .id0 = NI65_ID0, .id1 = NI65_ID1, .id_offset = 0x0e, .total_size = 0x10, .cmd_offset = 0x0, .addr_offset = 0x8, .vendor_id = ni_vendor, .cardname = "ni6510", .config = 0x1, }, { .id0 = NI65_EB_ID0, .id1 = NI65_EB_ID1, .id_offset = 0x0e, .total_size = 0x18, .cmd_offset = 0x10, .addr_offset = 0x0, .vendor_id = ni_vendor, .cardname = "ni6510 EtherBlaster", .config = 0x2, }, { .id0 = NE2100_ID0, .id1 = NE2100_ID1, .id_offset = 0x0e, .total_size = 0x18, .cmd_offset = 0x10, .addr_offset = 0x0, .vendor_id = NULL, .cardname = "generic NE2100", .config = 0x0, }, }; #define NUM_CARDS 3 struct priv { struct rmd rmdhead[RMDNUM]; struct tmd tmdhead[TMDNUM]; struct init_block ib; int rmdnum; int tmdnum,tmdlast; #ifdef RCV_VIA_SKB struct sk_buff *recv_skb[RMDNUM]; #else void *recvbounce[RMDNUM]; #endif #ifdef XMT_VIA_SKB struct sk_buff *tmd_skb[TMDNUM]; #endif void *tmdbounce[TMDNUM]; int tmdbouncenum; int lock,xmit_queued; struct net_device_stats stats; void *self; int cmdr_addr; int cardno; int features; spinlock_t ring_lock; }; static int ni65_probe1(struct net_device *dev,int); static irqreturn_t ni65_interrupt(int irq, void * dev_id, struct pt_regs *regs); static void ni65_recv_intr(struct net_device *dev,int); static void ni65_xmit_intr(struct net_device *dev,int); static int ni65_open(struct net_device *dev); static int ni65_lance_reinit(struct net_device *dev); static void ni65_init_lance(struct priv *p,unsigned char*,int,int); static int ni65_send_packet(struct sk_buff *skb, struct net_device *dev); static void ni65_timeout(struct net_device *dev); static int ni65_close(struct net_device *dev); static int ni65_alloc_buffer(struct net_device *dev); static void ni65_free_buffer(struct priv *p); static struct net_device_stats *ni65_get_stats(struct net_device *); static void set_multicast_list(struct net_device *dev); static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ static int debuglevel = 1; /* * set 'performance' registers .. we must STOP lance for that */ static void ni65_set_performance(struct priv *p) { writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ if( !(cards[p->cardno].config & 0x02) ) return; outw(80,PORT+L_ADDRREG); if(inw(PORT+L_ADDRREG) != 80) return; writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ outw(0,PORT+L_ADDRREG); outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ outw(1,PORT+L_ADDRREG); outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ } /* * open interface (up) */ static int ni65_open(struct net_device *dev) { struct priv *p = (struct priv *) dev->priv; int irqval = request_irq(dev->irq, &ni65_interrupt,0, cards[p->cardno].cardname,dev); if (irqval) {


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