From 064f370c5fd982e1264c03f5b704e00f5e41eb36 Mon Sep 17 00:00:00 2001 From: Thierry Escande Date: Tue, 2 Apr 2013 10:25:16 +0200 Subject: [PATCH] NFC: llcp: Add support in getsockopt for RW, LTO, and MIU remote parameters Useful for LLCP validation tests. Signed-off-by: Thierry Escande Signed-off-by: Samuel Ortiz --- include/uapi/linux/nfc.h | 7 +++++-- net/nfc/llcp/sock.c | 23 ++++++++++++++++++++++- 2 files changed, 27 insertions(+), 3 deletions(-) diff --git a/include/uapi/linux/nfc.h b/include/uapi/linux/nfc.h index 7440bc8..7c6f627 100644 --- a/include/uapi/linux/nfc.h +++ b/include/uapi/linux/nfc.h @@ -233,7 +233,10 @@ struct sockaddr_nfc_llcp { #define NFC_LLCP_DIRECTION_TX 0x01 /* socket option names */ -#define NFC_LLCP_RW 0 -#define NFC_LLCP_MIUX 1 +#define NFC_LLCP_RW 0 +#define NFC_LLCP_MIUX 1 +#define NFC_LLCP_REMOTE_MIU 2 +#define NFC_LLCP_REMOTE_LTO 3 +#define NFC_LLCP_REMOTE_RW 4 #endif /*__LINUX_NFC_H */ diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c index 641c535..fd01ac6 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; -- 2.7.4