static s32 wl_dongle_filter(struct net_device *ndev, u32 filter_mode)
{
/* Room for "event_msgs" + '\0' + bitvec */
s8 iovbuf[WL_EVENTING_MASK_LEN + 12];
const s8 *str;
struct wl_pkt_filter pkt_filter;
struct wl_pkt_filter *pkt_filterp;
s32 buf_len;
s32 str_len;
u32 mask_size;
u32 pattern_size;
s8 buf[256];
s32 err = 0;
/* add a default packet filter pattern */
str = "pkt_filter_add";
str_len = strlen(str);
strncpy(buf, str, str_len);
buf[str_len] = '\0';
buf_len = str_len + 1;
pkt_filterp = (struct wl_pkt_filter *)(buf + str_len + 1);
/* Parse packet filter id. */
pkt_filter.id = htod32(100);
/* Parse filter polarity. */
pkt_filter.negate_match = htod32(0);
/* Parse filter type. */
pkt_filter.type = htod32(0);
/* Parse pattern filter offset. */
pkt_filter.u.pattern.offset = htod32(0);
/* Parse pattern filter mask. */
mask_size = htod32(wl_pattern_atoh("0xff",
(char *)pkt_filterp->u.pattern.
mask_and_pattern));
/* Parse pattern filter pattern. */
pattern_size = htod32(wl_pattern_atoh("0x00",
(char *)&pkt_filterp->u.pattern.mask_and_pattern[mask_size]));
if (mask_size != pattern_size) {
WL_ERR(("Mask and pattern not the same size\n"));
err = -EINVAL;
goto dongle_filter_out;
}
pkt_filter.u.pattern.size_bytes = mask_size;
buf_len += WL_PKT_FILTER_FIXED_LEN;
buf_len += (WL_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
/* Keep-alive attributes are set in local
* variable (keep_alive_pkt), and
* then memcpy'ed into buffer (keep_alive_pktp) since there is no
* guarantee that the buffer is properly aligned.
*/
memcpy((char *)pkt_filterp, &pkt_filter,
WL_PKT_FILTER_FIXED_LEN + WL_PKT_FILTER_PATTERN_FIXED_LEN);
err = wldev_ioctl(ndev, WLC_SET_VAR, buf, buf_len, true);
if (err) {
if (err == -EOPNOTSUPP) {
WL_INFO(("filter not supported\n"));
} else {
WL_ERR(("filter (%d)\n", err));
}
goto dongle_filter_out;
}
/* set mode to allow pattern */
bcm_mkiovar("pkt_filter_mode", (char *)&filter_mode, 4, iovbuf,
sizeof(iovbuf));
err = wldev_ioctl(ndev, WLC_SET_VAR, iovbuf, sizeof(iovbuf), true);
if (err) {
if (err == -EOPNOTSUPP) {
WL_INFO(("filter_mode not supported\n"));
} else {
WL_ERR(("filter_mode (%d)\n", err));
}
goto dongle_filter_out;
}
dongle_filter_out:
return err;
}
void
dhd_pktfilter_offload_set(dhd_pub_t * dhd, char *arg)
{
const char *str;
wl_pkt_filter_t pkt_filter;
wl_pkt_filter_t *pkt_filterp;
int buf_len;
int str_len;
int rc;
uint32 mask_size;
uint32 pattern_size;
char *argv[8], * buf = 0;
int i = 0;
char *arg_save = 0, *arg_org = 0;
#define BUF_SIZE 2048
if (!(arg_save = MALLOC(dhd->osh, strlen(arg) + 1))) {
DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
goto fail;
}
arg_org = arg_save;
if (!(buf = MALLOC(dhd->osh, BUF_SIZE))) {
DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
goto fail;
}
memcpy(arg_save, arg, strlen(arg) + 1);
if (strlen(arg) > BUF_SIZE) {
DHD_ERROR(("Not enough buffer %d < %d\n", (int)strlen(arg), (int)sizeof(buf)));
goto fail;
}
argv[i] = bcmstrtok(&arg_save, " ", 0);
while (argv[i++])
argv[i] = bcmstrtok(&arg_save, " ", 0);
i = 0;
if (NULL == argv[i]) {
DHD_ERROR(("No args provided\n"));
goto fail;
}
str = "pkt_filter_add";
str_len = strlen(str);
strncpy(buf, str, str_len);
buf[ str_len ] = '\0';
buf_len = str_len + 1;
pkt_filterp = (wl_pkt_filter_t *) (buf + str_len + 1);
/* Parse packet filter id. */
pkt_filter.id = htod32(strtoul(argv[i], NULL, 0));
if (NULL == argv[++i]) {
DHD_ERROR(("Polarity not provided\n"));
goto fail;
}
/* Parse filter polarity. */
pkt_filter.negate_match = htod32(strtoul(argv[i], NULL, 0));
if (NULL == argv[++i]) {
DHD_ERROR(("Filter type not provided\n"));
goto fail;
}
/* Parse filter type. */
pkt_filter.type = htod32(strtoul(argv[i], NULL, 0));
if (NULL == argv[++i]) {
DHD_ERROR(("Offset not provided\n"));
goto fail;
}
/* Parse pattern filter offset. */
pkt_filter.u.pattern.offset = htod32(strtoul(argv[i], NULL, 0));
if (NULL == argv[++i]) {
DHD_ERROR(("Bitmask not provided\n"));
goto fail;
}
/* Parse pattern filter mask. */
mask_size =
htod32(wl_pattern_atoh(argv[i], (char *) pkt_filterp->u.pattern.mask_and_pattern));
if (NULL == argv[++i]) {
DHD_ERROR(("Pattern not provided\n"));
goto fail;
}
/* Parse pattern filter pattern. */
pattern_size =
htod32(wl_pattern_atoh(argv[i],
(char *) &pkt_filterp->u.pattern.mask_and_pattern[mask_size]));
if (mask_size != pattern_size) {
DHD_ERROR(("Mask and pattern not the same size\n"));
goto fail;
}
pkt_filter.u.pattern.size_bytes = mask_size;
buf_len += WL_PKT_FILTER_FIXED_LEN;
buf_len += (WL_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
/* Keep-alive attributes are set in local variable (keep_alive_pkt), and
** then memcpy'ed into buffer (keep_alive_pktp) since there is no
** guarantee that the buffer is properly aligned.
*/
memcpy((char *)pkt_filterp,
&pkt_filter,
WL_PKT_FILTER_FIXED_LEN + WL_PKT_FILTER_PATTERN_FIXED_LEN);
rc = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, buf_len, TRUE, 0);
rc = rc >= 0 ? 0 : rc;
if (rc)
DHD_TRACE(("%s: failed to add pktfilter %s, retcode = %d\n",
__FUNCTION__, arg, rc));
else
DHD_TRACE(("%s: successfully added pktfilter %s\n",
__FUNCTION__, arg));
fail:
if (arg_org)
MFREE(dhd->osh, arg_org, strlen(arg) + 1);
if (buf)
MFREE(dhd->osh, buf, BUF_SIZE);
}
