static int fbsd_read(struct wif *wi, unsigned char *h80211, int len,
struct rx_info *ri)
{
struct priv_fbsd *pf = wi_priv(wi);
unsigned char *wh;
int plen;
assert(len > 0);
/* need to read more */
if (pf->pf_totlen == 0) {
pf->pf_totlen = read(pf->pf_fd, pf->pf_buf, sizeof(pf->pf_buf));
if (pf->pf_totlen == -1) {
pf->pf_totlen = 0;
return -1;
}
pf->pf_next = pf->pf_buf;
}
/* read 802.11 packet */
wh = get_80211(pf, &plen, ri);
if (plen > len)
plen = len;
assert(plen > 0);
memcpy(h80211, wh, plen);
if(ri && !ri->ri_channel)
ri->ri_channel = wi_get_channel(wi);
return plen;
}
/**
* Capture a packet
* @param buf Buffer for the packet (has to be already allocated)
* @param len Length of the buffer
* @param ri Receive information structure
* @return -1 in case of failure or the number of bytes received
*/
static int cygwin_read_packet(struct priv_cygwin *priv, void *buf, int len,
struct rx_info *ri)
{
int rd;
memset(ri, 0, sizeof(*ri));
rd = priv->pc_sniff(buf, len, ri);
if (rd == -1)
return -1;
if (!ri->ri_channel)
ri->ri_channel = wi_get_channel(priv->pc_wi);
return rd;
}
static int card_get_chan(struct sstate *ss)
{
return wi_get_channel(ss->ss_wi);
}