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path: root/drivers/tty/n_gsm.c
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Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 5bbedfc36fd1..b7e1369a035c 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -3716,7 +3716,9 @@ static int gsmld_ioctl(struct tty_struct *tty, unsigned int cmd,
{
struct gsm_config c;
struct gsm_config_ext ce;
+ struct gsm_dlci_config dc;
struct gsm_mux *gsm = tty->disc_data;
+ struct gsm_dlci *dlci;
unsigned int base;
switch (cmd) {
@@ -3741,6 +3743,33 @@ static int gsmld_ioctl(struct tty_struct *tty, unsigned int cmd,
if (copy_from_user(&ce, (void __user *)arg, sizeof(ce)))
return -EFAULT;
return gsm_config_ext(gsm, &ce);
+ case GSMIOC_GETCONF_DLCI:
+ if (copy_from_user(&dc, (void __user *)arg, sizeof(dc)))
+ return -EFAULT;
+ if (dc.channel == 0 || dc.channel >= NUM_DLCI)
+ return -EINVAL;
+ dlci = gsm->dlci[dc.channel];
+ if (!dlci) {
+ dlci = gsm_dlci_alloc(gsm, dc.channel);
+ if (!dlci)
+ return -ENOMEM;
+ }
+ gsm_dlci_copy_config_values(dlci, &dc);
+ if (copy_to_user((void __user *)arg, &dc, sizeof(dc)))
+ return -EFAULT;
+ return 0;
+ case GSMIOC_SETCONF_DLCI:
+ if (copy_from_user(&dc, (void __user *)arg, sizeof(dc)))
+ return -EFAULT;
+ if (dc.channel == 0 || dc.channel >= NUM_DLCI)
+ return -EINVAL;
+ dlci = gsm->dlci[dc.channel];
+ if (!dlci) {
+ dlci = gsm_dlci_alloc(gsm, dc.channel);
+ if (!dlci)
+ return -ENOMEM;
+ }
+ return gsm_dlci_config(dlci, &dc, 0);
default:
return n_tty_ioctl_helper(tty, cmd, arg);
}