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#include <u.h>
#include <libc.h>
#include <ip.h>
#include "dat.h"
#include "protos.h"
typedef struct{
uchar verflags;
uchar error;
uchar major[2];
uchar minor;
uchar cmd;
uchar tag[4];
}Hdr;
enum{
Hsize = 10,
};
enum{
Omajor,
Ominor,
Ocmd,
};
static Mux p_mux[] = {
{"aoeata", 0},
{"aoecmd", 1},
{"aoemask", 2},
{"aoerr", 3},
{0},
};
static Field p_fields[] =
{
{"shelf", Fnum, Ominor, "shelf", },
{"slot", Fnum, Omajor, "slot", },
{"cmd", Fnum, Ocmd, "cmd", },
{0}
};
static void
p_compile(Filter *f)
{
Mux *m;
if(f->op == '='){
compile_cmp(aoe.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 aoe 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 Omajor:
return NetS(h->major) == f->ulv;
case Ominor:
return h->minor == f->ulv;
case Ocmd:
return h->cmd == 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;
demux(p_mux, h->cmd, h->cmd, m, &dump);
m->p = seprint(m->p, m->e, "ver=%d flag=%4b err=%d %d.%d cmd=%ux tag=%ux",
h->verflags >> 4, h->verflags & 0xf, h->error, NetS(h->major),
h->minor, h->cmd, NetL(h->tag));
return 0;
}
Proto aoe =
{
"aoe",
p_compile,
p_filter,
p_seprint,
p_mux,
"%lud",
p_fields,
defaultframer,
};
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