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#include <u.h>
#include <libc.h>
#include <ip.h>
#include "dat.h"
#include "protos.h"
typedef struct {
uchar res;
uchar cmd;
uchar err;
uchar cnt;
} Hdr;
enum {
Ocmd,
Oerr,
Ocnt,
Hsize = 4,
};
static Field p_fields[] =
{
{ "cmd", Fnum, Ocmd, "command", },
{ "err", Fnum, Oerr, "error", },
{ "cnt", Fnum, Ocnt, "count", },
nil
};
static Mux p_mux[] = {
{ "aoemd", 0 },
{ "aoemd", 1 },
nil
};
static void
p_compile(Filter *f)
{
Mux *m;
if(f->op == '='){
compile_cmp(aoerr.name, f, p_fields);
return;
}
for(m = p_mux; m->name; m++)
if(strcmp(f->s, m->name) == 0){
f->pr = m->pr;
f->ulv = m->val;
f->subop = Ocmd;
return;
}
sysfatal("unknown aoemask field: %s", f->s);
}
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 Ocmd:
return h->cmd == f->ulv;
case Oerr:
return h->err == f->ulv;
case Ocnt:
return h->cnt == f->ulv;
}
return 0;
}
static char *ctab[] = {
"read",
"edit",
};
static char *etab[] = {
"",
"bad",
"full",
};
static int
p_seprint(Msg *m)
{
char *s, *t;
Hdr *h;
if(m->pe - m->ps < Hsize)
return 0;
h = (Hdr*)m->ps;
m->ps += Hsize;
demux(p_mux, h->cmd, h->cmd, m, &dump);
s = "unk";
if(h->cmd < nelem(ctab))
s = ctab[h->cmd];
t = "unk";
if(h->err < nelem(etab))
s = etab[h->err];
m->p = seprint(m->p, m->e, "cmd=%d %s err=%d %s cnt=%d\n",
h->cmd, s, h->err, t, h->cnt);
return 0;
}
Proto aoemask = {
"aoemask",
p_compile,
p_filter,
p_seprint,
p_mux,
"%lud",
p_fields,
defaultframer,
};
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