static int cygwin_read(struct wif *wi, unsigned char *h80211, int len,
struct rx_info *ri)
{
struct priv_cygwin *pc = wi_priv(wi);
struct rx_info tmp;
int plen;
if (pc->pc_running == -1)
return -1;
if (!ri)
ri = &tmp;
/* length */
if (net_read_exact(pc->pc_pipe[0], &plen, sizeof(plen)) == -1)
return -1;
/* ri */
if (net_read_exact(pc->pc_pipe[0], ri, sizeof(*ri)) == -1)
return -1;
plen -= sizeof(*ri);
assert(plen > 0);
return cygwin_read_reader(pc->pc_pipe[0], plen, h80211, len);
}
int cygwin_read_reader(int fd, int plen, void *dst, int len)
{
/* packet */
if (len > plen)
len = plen;
if (net_read_exact(fd, dst, len) == -1)
return -1;
plen -= len;
/* consume packet */
while (plen) {
char lame[1024];
int rd = sizeof(lame);
if (rd > plen)
rd = plen;
if (net_read_exact(fd, lame, rd) == -1)
return -1;
plen -= rd;
assert(plen >= 0);
}
return len;
}
static int ti_read_cygwin(struct tif *ti, void *buf, int len)
{
struct tip_cygwin *priv = ti_priv(ti);
int plen;
if (priv->tc_running != 1)
return -1;
/* read len */
if (net_read_exact(priv->tc_pipe[0], &plen, sizeof(plen)) == -1)
return -1;
return cygwin_read_reader(priv->tc_pipe[0], plen, buf, len);
}
int net_get(int s, void *arg, int *len)
{
struct net_hdr nh;
int plen;
if (net_read_exact(s, &nh, sizeof(nh)) == -1)
{
return -1;
}
plen = ntohl(nh.nh_len);
if (!(plen <= *len))
printf("PLEN %d type %d len %d\n",
plen, nh.nh_type, *len);
assert(plen <= *len && plen >= 0);
*len = plen;
if ((*len) && (net_read_exact(s, arg, *len) == -1))
{
return -1;
}
return nh.nh_type;
}
