/* block ack control, write:
* - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
* - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
* - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
*/
static ssize_t wil_write_back(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
int rc;
char *kbuf = kmalloc(len + 1, GFP_KERNEL);
char cmd[9];
int p1, p2, p3;
if (!kbuf)
return -ENOMEM;
rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
if (rc != len) {
kfree(kbuf);
return rc >= 0 ? -EIO : rc;
}
kbuf[len] = '\0';
rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
kfree(kbuf);
if (rc < 0)
return rc;
if (rc < 2)
return -EINVAL;
if (0 == strcmp(cmd, "add")) {
if (rc < 3) {
wil_err(wil, "BACK: add require at least 2 params\n");
return -EINVAL;
}
if (rc < 4)
p3 = 0;
wmi_addba(wil, p1, p2, p3);
} else if (0 == strcmp(cmd, "del_tx")) {
if (rc < 3)
p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
wmi_delba_tx(wil, p1, p2);
} else if (0 == strcmp(cmd, "del_rx")) {
if (rc < 3) {
wil_err(wil,
"BACK: del_rx require at least 2 params\n");
return -EINVAL;
}
if (rc < 4)
p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
wmi_delba_rx(wil, mk_cidxtid(p1, p2), p3);
} else {
wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
return -EINVAL;
}
return len;
}
/* block ack control, write:
* - "add <ringid> <agg_size> <timeout>" to trigger ADDBA
* - "del_tx <ringid> <reason>" to trigger DELBA for Tx side
* - "del_rx <CID> <TID> <reason>" to trigger DELBA for Rx side
*/
static ssize_t wil_write_back(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct wil6210_priv *wil = file->private_data;
int rc;
char *kbuf = kmalloc(len + 1, GFP_KERNEL);
char cmd[9];
int p1, p2, p3;
if (!kbuf)
return -ENOMEM;
rc = simple_write_to_buffer(kbuf, len, ppos, buf, len);
if (rc != len) {
kfree(kbuf);
return rc >= 0 ? -EIO : rc;
}
kbuf[len] = '\0';
rc = sscanf(kbuf, "%8s %d %d %d", cmd, &p1, &p2, &p3);
kfree(kbuf);
if (rc < 0)
return rc;
if (rc < 2)
return -EINVAL;
if ((strcmp(cmd, "add") == 0) ||
(strcmp(cmd, "del_tx") == 0)) {
struct vring_tx_data *txdata;
if (p1 < 0 || p1 >= WIL6210_MAX_TX_RINGS) {
wil_err(wil, "BACK: invalid ring id %d\n", p1);
return -EINVAL;
}
txdata = &wil->vring_tx_data[p1];
if (strcmp(cmd, "add") == 0) {
if (rc < 3) {
wil_err(wil, "BACK: add require at least 2 params\n");
return -EINVAL;
}
if (rc < 4)
p3 = 0;
wmi_addba(wil, txdata->mid, p1, p2, p3);
} else {
if (rc < 3)
p2 = WLAN_REASON_QSTA_LEAVE_QBSS;
wmi_delba_tx(wil, txdata->mid, p1, p2);
}
} else if (strcmp(cmd, "del_rx") == 0) {
struct wil_sta_info *sta;
if (rc < 3) {
wil_err(wil,
"BACK: del_rx require at least 2 params\n");
return -EINVAL;
}
if (p1 < 0 || p1 >= WIL6210_MAX_CID) {
wil_err(wil, "BACK: invalid CID %d\n", p1);
return -EINVAL;
}
if (rc < 4)
p3 = WLAN_REASON_QSTA_LEAVE_QBSS;
sta = &wil->sta[p1];
wmi_delba_rx(wil, sta->mid, mk_cidxtid(p1, p2), p3);
} else {
wil_err(wil, "BACK: Unrecognized command \"%s\"\n", cmd);
return -EINVAL;
}
return len;
}