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Ventoy/VBLADE/vblade-master/contrib/vblade-17-aio.2.diff
longpanda 05a1b863a6 initial commit
2020-04-05 00:08:01 +08:00

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diff -uprN vblade-17.orig/aoe.c vblade-17/aoe.c
--- vblade-17.orig/aoe.c 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/aoe.c 2008-06-09 11:05:23.000000000 -0400
@@ -8,6 +8,9 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
+#include <errno.h>
+#include <aio.h>
+#include <poll.h>
#include "dat.h"
#include "fns.h"
@@ -22,6 +25,11 @@ char config[Nconfig];
int nconfig = 0;
int maxscnt = 2;
char *ifname;
+int queuepipe[2];
+int pktlen[Nplaces], pending[Nplaces];
+Ata *pkt[Nplaces];
+Ataregs regs[Nplaces];
+struct aiocb aiocb[Nplaces];
void
aoead(int fd) // advertise the virtual blade
@@ -78,32 +86,52 @@ getlba(uchar *p)
}
int
-aoeata(Ata *p, int pktlen) // do ATA reqeust
+aoeata(int place) // do ATA reqeust
{
- Ataregs r;
- int len = 60;
int n;
+ int len = 60; // minimum ethernet packet size
- r.lba = getlba(p->lba);
- r.sectors = p->sectors;
- r.feature = p->err;
- r.cmd = p->cmd;
- if (atacmd(&r, (uchar *)(p+1), maxscnt*512, pktlen - sizeof(*p)) < 0) {
- p->h.flags |= Error;
- p->h.error = BadArg;
+ regs[place].lba = getlba(pkt[place]->lba);
+ regs[place].sectors = pkt[place]->sectors;
+ regs[place].feature = pkt[place]->err;
+ regs[place].cmd = pkt[place]->cmd;
+ n = atacmd(regs + place, (uchar *)(pkt[place] + 1), maxscnt*512,
+ pktlen[place] - sizeof(Ata), aiocb + place);
+ if (n < 0) {
+ pkt[place]->h.flags |= Error;
+ pkt[place]->h.error = BadArg;
return len;
+ } else if (n > 0) {
+ pending[place] = 1;
+ return 0;
+ }
+ if (!(pkt[place]->aflag & Write) && (n = pkt[place]->sectors)) {
+ n -= regs[place].sectors;
+ len = sizeof (Ata) + (n*512);
}
- if (!(p->aflag & Write))
- if ((n = p->sectors)) {
- n -= r.sectors;
+ pkt[place]->sectors = regs[place].sectors;
+ pkt[place]->err = regs[place].err;
+ pkt[place]->cmd = regs[place].status;
+ return len;
+}
+
+int aoeatacomplete(int place, int pktlen)
+{
+ int n;
+ int len = 60; // minimum ethernet packet size
+ atacmdcomplete(regs + place, aiocb + place);
+ if (!(pkt[place]->aflag & Write) && (n = pkt[place]->sectors)) {
+ n -= regs[place].sectors;
len = sizeof (Ata) + (n*512);
}
- p->sectors = r.sectors;
- p->err = r.err;
- p->cmd = r.status;
+ pkt[place]->sectors = regs[place].sectors;
+ pkt[place]->err = regs[place].err;
+ pkt[place]->cmd = regs[place].status;
+ pending[place] = 0;
return len;
}
+
#define QCMD(x) ((x)->vercmd & 0xf)
// yes, this makes unnecessary copies.
@@ -156,8 +184,9 @@ confcmd(Conf *p, int payload) // process
}
void
-doaoe(Aoehdr *p, int n)
+doaoe(int place)
{
+ Aoehdr *p = (Aoehdr *) pkt[place];
int len;
enum { // config query header size
CHDR_SIZ = sizeof(Conf) - sizeof(((Conf *)0)->data),
@@ -165,14 +194,16 @@ doaoe(Aoehdr *p, int n)
switch (p->cmd) {
case ATAcmd:
- if (n < sizeof(Ata))
+ if (pktlen[place] < sizeof(Ata))
+ return;
+ len = aoeata(place);
+ if (len == 0)
return;
- len = aoeata((Ata*)p, n);
break;
case Config:
- if (n < CHDR_SIZ)
+ if (pktlen[place] < CHDR_SIZ)
return;
- len = confcmd((Conf *)p, n - CHDR_SIZ);
+ len = confcmd((Conf *)p, pktlen[place] - CHDR_SIZ);
if (len == 0)
return;
break;
@@ -193,25 +224,129 @@ doaoe(Aoehdr *p, int n)
}
void
+doaoecomplete(int place)
+{
+ Aoehdr *p = (Aoehdr *) pkt[place];
+ int len = aoeatacomplete(place, pktlen[place]);
+ memmove(p->dst, p->src, 6);
+ memmove(p->src, mac, 6);
+ p->maj = htons(shelf);
+ p->min = slot;
+ p->flags |= Resp;
+ if (putpkt(sfd, (uchar *) p, len) == -1) {
+ perror("write to network");
+ exit(1);
+ }
+
+}
+
+// allocate the buffer so that the ata data area
+// is page aligned for o_direct on linux
+
+void *
+bufalloc(void **buf, long len)
+{
+ long psize;
+ unsigned long n;
+
+ psize = sysconf(_SC_PAGESIZE);
+ if (psize == -1) {
+ perror("sysconf");
+ exit(EXIT_FAILURE);
+ }
+ n = len/psize + 3;
+ *buf = malloc(psize * n);
+ if (!*buf) {
+ perror("malloc");
+ exit(EXIT_FAILURE);
+ }
+ n = (unsigned long) *buf;
+ n += psize * 2;
+ n &= ~(psize - 1);
+ return (void *) (n - sizeof (Ata));
+}
+
+void
+sigio(int signo)
+{
+ const char dummy = 0;
+ write(queuepipe[1], &dummy, 1);
+}
+
+void
aoe(void)
{
Aoehdr *p;
- uchar *buf;
- int n, sh;
+ char dummy;
+ int n, place, sh;
enum { bufsz = 1<<16, };
-
- buf = malloc(bufsz);
+ sigset_t mask, oldmask;
+ struct sigaction sigact;
+ struct pollfd pollfds[2];
+ void *freeme[Nplaces];
+
+ for (n = 0; n < Nplaces; n++) {
+ pkt[n] = bufalloc(freeme + n, bufsz);
+ pending[n] = 0;
+ }
aoead(sfd);
+ pipe(queuepipe);
+ fcntl(queuepipe[0], F_SETFL, O_NONBLOCK);
+ fcntl(queuepipe[1], F_SETFL, O_NONBLOCK);
+
+ sigemptyset(&sigact.sa_mask);
+ sigact.sa_flags = 0;
+ sigact.sa_sigaction = (void *) sigio;
+ sigaction(SIGIO, &sigact, NULL);
+
+ sigemptyset(&mask);
+ sigaddset(&mask, SIGIO);
+ sigprocmask(SIG_BLOCK, &mask, &oldmask);
+
+ pollfds[0].fd = queuepipe[0];
+ pollfds[1].fd = sfd;
+ pollfds[0].events = pollfds[1].events = POLLIN;
+
for (;;) {
- n = getpkt(sfd, buf, bufsz);
- if (n < 0) {
+ sigprocmask(SIG_SETMASK, &oldmask, NULL);
+ n = poll(pollfds, 2, 1000);
+ sigprocmask(SIG_BLOCK, &mask, NULL);
+
+ if (n < 0 && errno != EINTR) {
+ perror("poll");
+ continue;
+ } else if (n == 0 || pollfds[0].revents & POLLIN) {
+ while(read(queuepipe[0], &dummy, 1) > 0);
+ for (place = 0; place < Nplaces; place++) {
+ if (!pending[place])
+ continue;
+ if (aio_error(aiocb + place) == EINPROGRESS)
+ continue;
+ doaoecomplete(place);
+ pollfds[1].events = POLLIN;
+ }
+ }
+
+ if ((pollfds[1].revents & POLLIN) == 0)
+ continue;
+
+ for (place = 0; pending[place] && place < Nplaces; place++);
+ if (place >= Nplaces) {
+ pollfds[1].events = 0;
+ continue;
+ }
+
+ pktlen[place] = getpkt(sfd, (uchar *) pkt[place], bufsz);
+ if (pktlen[place] < 0) {
+ if (errno == EINTR)
+ continue;
perror("read network");
exit(1);
}
- if (n < sizeof(Aoehdr))
+ if (pktlen[place] < sizeof(Aoehdr))
continue;
- p = (Aoehdr *) buf;
+ p = (Aoehdr *) pkt[place];
if (ntohs(p->type) != 0x88a2)
continue;
if (p->flags & Resp)
@@ -223,9 +358,10 @@ aoe(void)
continue;
if (nmasks && !maskok(p->src))
continue;
- doaoe(p, n);
+ doaoe(place);
}
- free(buf);
+ for (place = 0; place < Nplaces; place++)
+ free(freeme[place]);
}
void
@@ -317,7 +453,7 @@ main(int argc, char **argv)
}
if (s.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH))
omode = O_RDWR;
- bfd = open(argv[3], omode);
+ bfd = opendisk(argv[3], omode);
if (bfd == -1) {
perror("open");
exit(1);
diff -uprN vblade-17.orig/ata.c vblade-17/ata.c
--- vblade-17.orig/ata.c 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/ata.c 2008-06-09 11:05:23.000000000 -0400
@@ -3,6 +3,8 @@
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
+#include <errno.h>
+#include <aio.h>
#include "dat.h"
#include "fns.h"
@@ -98,7 +100,7 @@ atainit(void)
* check for that.
*/
int
-atacmd(Ataregs *p, uchar *dp, int ndp, int payload) // do the ata cmd
+atacmd(Ataregs *p, uchar *dp, int ndp, int payload, struct aiocb *aiocb) // do the ata cmd
{
vlong lba;
ushort *ip;
@@ -155,14 +157,29 @@ atacmd(Ataregs *p, uchar *dp, int ndp, i
return 0;
}
if (p->cmd == 0x20 || p->cmd == 0x24)
- n = getsec(bfd, dp, lba, p->sectors);
+ n = getsec(bfd, dp, lba, p->sectors, aiocb);
else {
// packet should be big enough to contain the data
if (payload < 512 * p->sectors)
return -1;
- n = putsec(bfd, dp, lba, p->sectors);
+ n = putsec(bfd, dp, lba, p->sectors, aiocb);
}
- n /= 512;
+ if (n < 0) {
+ p->err = ABRT;
+ p->status = ERR|DRDY;
+ p->lba += n;
+ p->sectors -= n;
+ return 0;
+ }
+ return 1; // callback expected
+}
+
+
+int
+atacmdcomplete(Ataregs *p, struct aiocb *aiocb) // complete the ata cmd
+{
+ int n;
+ n = aio_return(aiocb) / 512;
if (n != p->sectors) {
p->err = ABRT;
p->status = ERR;
@@ -173,4 +190,3 @@ atacmd(Ataregs *p, uchar *dp, int ndp, i
p->sectors -= n;
return 0;
}
-
diff -uprN vblade-17.orig/dat.h vblade-17/dat.h
--- vblade-17.orig/dat.h 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/dat.h 2008-06-09 11:05:23.000000000 -0400
@@ -111,6 +111,8 @@ enum {
Nconfig = 1024,
Bufcount = 16,
+
+ Nplaces = 32,
};
int shelf, slot;
diff -uprN vblade-17.orig/fns.h vblade-17/fns.h
--- vblade-17.orig/fns.h 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/fns.h 2008-06-09 11:07:21.000000000 -0400
@@ -15,7 +15,8 @@ int maskok(uchar *);
// ata.c
void atainit(void);
-int atacmd(Ataregs *, uchar *, int, int);
+int atacmd(Ataregs *, uchar *, int, int, struct aiocb *);
+int atacmdcomplete(Ataregs *, struct aiocb *);
// bpf.c
@@ -26,8 +27,9 @@ void free_bpf_program(void *);
int dial(char *);
int getea(int, char *, uchar *);
-int putsec(int, uchar *, vlong, int);
-int getsec(int, uchar *, vlong, int);
+int opendisk(const char *, int);
+int putsec(int, uchar *, vlong, int, struct aiocb *);
+int getsec(int, uchar *, vlong, int, struct aiocb *);
int putpkt(int, uchar *, int);
int getpkt(int, uchar *, int);
vlong getsize(int);
diff -uprN vblade-17.orig/freebsd.c vblade-17/freebsd.c
--- vblade-17.orig/freebsd.c 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/freebsd.c 2008-06-09 11:05:23.000000000 -0400
@@ -209,19 +209,40 @@ getea(int s, char *eth, uchar *ea)
return(0);
}
-
int
-getsec(int fd, uchar *place, vlong lba, int nsec)
+opendisk(const char *disk, int omode)
{
- return pread(fd, place, nsec * 512, lba * 512);
+ return open(disk, omode);
}
int
-putsec(int fd, uchar *place, vlong lba, int nsec)
-{
- return pwrite(fd, place, nsec * 512, lba * 512);
+getsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
+{
+ bzero((char *) aiocb, sizeof(struct aiocb));
+ aiocb->aio_fildes = fd;
+ aiocb->aio_buf = place;
+ aiocb->aio_nbytes = nsec * 512;
+ aiocb->aio_offset = lba * 512;
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
+ return aio_read(aiocb);
}
+int
+putsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
+{
+ bzero((char *) aiocb, sizeof(struct aiocb));
+ aiocb->aio_fildes = fd;
+ aiocb->aio_buf = place;
+ aiocb->aio_nbytes = nsec * 512;
+ aiocb->aio_offset = lba * 512;
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
+ return aio_write(aiocb);
+}
+
static int pktn = 0;
static uchar *pktbp = NULL;
diff -uprN vblade-17.orig/linux.c vblade-17/linux.c
--- vblade-17.orig/linux.c 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/linux.c 2008-06-09 11:05:23.000000000 -0400
@@ -1,5 +1,6 @@
// linux.c: low level access routines for Linux
#include "config.h"
+#define _GNU_SOURCE
#include <sys/socket.h>
#include <stdio.h>
#include <string.h>
@@ -22,6 +23,9 @@
#include <netinet/in.h>
#include <linux/fs.h>
#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <aio.h>
#include "dat.h"
#include "fns.h"
@@ -29,8 +33,6 @@
int getindx(int, char *);
int getea(int, char *, uchar *);
-
-
int
dial(char *eth) // get us a raw connection to an interface
{
@@ -84,7 +86,7 @@ getea(int s, char *name, uchar *ea)
struct ifreq xx;
int n;
- strcpy(xx.ifr_name, name);
+ strcpy(xx.ifr_name, name);
n = ioctl(s, SIOCGIFHWADDR, &xx);
if (n == -1) {
perror("Can't get hw addr");
@@ -110,17 +112,37 @@ getmtu(int s, char *name)
}
int
-getsec(int fd, uchar *place, vlong lba, int nsec)
+opendisk(const char *disk, int omode)
+{
+ return open(disk, omode|O_DIRECT);
+}
+
+int
+getsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
{
- lseek(fd, lba * 512, 0);
- return read(fd, place, nsec * 512);
+ bzero((char *) aiocb, sizeof(struct aiocb));
+ aiocb->aio_fildes = fd;
+ aiocb->aio_buf = place;
+ aiocb->aio_nbytes = nsec * 512;
+ aiocb->aio_offset = lba * 512;
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
+ return aio_read(aiocb);
}
int
-putsec(int fd, uchar *place, vlong lba, int nsec)
+putsec(int fd, uchar *place, vlong lba, int nsec, struct aiocb *aiocb)
{
- lseek(fd, lba * 512, 0);
- return write(fd, place, nsec * 512);
+ bzero((char *) aiocb, sizeof(struct aiocb));
+ aiocb->aio_fildes = fd;
+ aiocb->aio_buf = place;
+ aiocb->aio_nbytes = nsec * 512;
+ aiocb->aio_offset = lba * 512;
+ aiocb->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
+ aiocb->aio_sigevent.sigev_signo = SIGIO;
+ aiocb->aio_sigevent.sigev_value.sival_ptr = aiocb;
+ return aio_write(aiocb);
}
int
diff -uprN vblade-17.orig/linux.h vblade-17/linux.h
--- vblade-17.orig/linux.h 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/linux.h 2008-06-09 11:05:23.000000000 -0400
@@ -6,6 +6,6 @@ typedef long long vlong;
int dial(char *);
int getindx(int, char *);
int getea(int, char *, uchar *);
-int getsec(int, uchar *, vlong, int);
-int putsec(int, uchar *, vlong, int);
+int getsec(int, uchar *, vlong, int, struct aiocb *);
+int putsec(int, uchar *, vlong, int, struct aiocb *);
vlong getsize(int);
diff -uprN vblade-17.orig/makefile vblade-17/makefile
--- vblade-17.orig/makefile 2008-06-09 10:53:07.000000000 -0400
+++ vblade-17/makefile 2008-06-09 11:05:23.000000000 -0400
@@ -13,7 +13,7 @@ CFLAGS += -Wall -g -O2
CC = gcc
vblade: $O
- ${CC} -o vblade $O
+ ${CC} -lrt -o vblade $O
aoe.o : aoe.c config.h dat.h fns.h makefile
${CC} ${CFLAGS} -c $<
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