NFC: llcp: Add support in getsockopt for RW, LTO, and MIU remote parameters

Useful for LLCP validation tests.

Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 22 insertions, 1 deletions

diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 641c535be3d4..fd01ac6e0bf4 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -303,7 +303,7 @@ static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
         struct sock *sk = sock->sk;
         struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
         int len, err = 0;
-        u16 miux;
+        u16 miux, remote_miu;
         u8 rw;
 
         pr_debug("%p optname %d\n", sk, optname);
@@ -339,6 +339,27 @@ static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
 
                 break;
 
+        case NFC_LLCP_REMOTE_MIU:
+                remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
+                                local->remote_miu : llcp_sock->remote_miu;
+
+                if (put_user(remote_miu, (u32 __user *) optval))
+                        err = -EFAULT;
+
+                break;
+
+        case NFC_LLCP_REMOTE_LTO:
+                if (put_user(local->remote_lto / 10, (u32 __user *) optval))
+                        err = -EFAULT;
+
+                break;
+
+        case NFC_LLCP_REMOTE_RW:
+                if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
+                        err = -EFAULT;
+
+                break;
+
         default:
                 err = -ENOPROTOOPT;
                 break;