123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127 |
- #include <u.h>
- #include <libc.h>
- #include <ip.h>
- #include "dat.h"
- #include "protos.h"
- typedef struct{
- uchar aflag;
- uchar feat;
- uchar sectors;
- uchar cmd;
- uchar lba[6];
- }Hdr;
- enum{
- Hsize = 10,
- };
- enum{
- Oaflag,
- Ocmd,
- Ofeat,
- Osectors,
- Olba,
- Ostat,
- Oerr,
- };
- static Field p_fields[] =
- {
- {"aflag", Fnum, Oaflag, "aflag", },
- {"cmd", Fnum, Ocmd, "command register", },
- {"feat", Fnum, Ofeat, "features", },
- {"sectors", Fnum, Osectors, "number of sectors", },
- {"lba", Fnum, Olba, "lba", },
- {"stat", Fnum, Ostat, "status", },
- {"err", Fnum, Oerr, "error", },
- {0}
- };
- static void
- p_compile(Filter *f)
- {
- if(f->op == '='){
- compile_cmp(aoeata.name, f, p_fields);
- return;
- }
- sysfatal("unknown aoeata field: %s", f->s);
- }
- uvlong
- llba(uchar *c)
- {
- uvlong l;
- l = c[0];
- l |= c[1]<<8;
- l |= c[2]<<16;
- l |= c[3]<<24;
- l |= (uvlong)c[4]<<32;
- l |= (uvlong)c[5]<<40;
- return l;
- }
- static int
- p_filter(Filter *f, Msg *m)
- {
- Hdr *h;
- if(m->pe - m->ps < Hsize)
- return 0;
- h = (Hdr*)m->ps;
- m->ps += Hsize;
- switch(f->subop){
- case Oaflag:
- return h->aflag == f->ulv;
- case Ocmd:
- return h->cmd == f->ulv;
- case Ofeat:
- return h->feat == f->ulv;
- case Osectors:
- return h->sectors == f->ulv;
- case Olba:
- return llba(h->lba) == f->vlv;
- /* this is wrong, but we don't have access to the direction here */
- case Ostat:
- return h->cmd == f->ulv;
- case Oerr:
- return h->feat == f->ulv;
- }
- return 0;
- }
- static int
- p_seprint(Msg *m)
- {
- Hdr *h;
- if(m->pe - m->ps < Hsize)
- return 0;
- h = (Hdr*)m->ps;
- m->ps += Hsize;
- /* no next protocol */
- m->pr = nil;
- m->p = seprint(m->p, m->e, "aflag=%ux errfeat=%ux sectors=%ux cmdstat=%ux lba=%lld",
- h->aflag, h->feat, h->sectors, h->cmd, llba(h->lba));
- return 0;
- }
- Proto aoeata =
- {
- "aoeata",
- p_compile,
- p_filter,
- p_seprint,
- nil,
- nil,
- p_fields,
- defaultframer,
- };
|