summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/net/nfc/nfc.h3
-rw-r--r--include/uapi/linux/nfc.h16
-rw-r--r--net/nfc/llcp_commands.c2
-rw-r--r--net/nfc/llcp_core.c11
-rw-r--r--net/nfc/nfc.h6
-rw-r--r--net/nfc/rawsock.c94
6 files changed, 117 insertions, 15 deletions
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 2e8b40c16274..6c583e244de2 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -264,4 +264,7 @@ int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type);
int nfc_remove_se(struct nfc_dev *dev, u32 se_idx);
struct nfc_se *nfc_find_se(struct nfc_dev *dev, u32 se_idx);
+void nfc_send_to_raw_sock(struct nfc_dev *dev, struct sk_buff *skb,
+ u8 payload_type, u8 direction);
+
#endif /* __NET_NFC_H */
diff --git a/include/uapi/linux/nfc.h b/include/uapi/linux/nfc.h
index 9789dc95b6a8..9b19b4461928 100644
--- a/include/uapi/linux/nfc.h
+++ b/include/uapi/linux/nfc.h
@@ -273,11 +273,19 @@ struct sockaddr_nfc_llcp {
* First byte is the adapter index
* Second byte contains flags
* - 0x01 - Direction (0=RX, 1=TX)
- * - 0x02-0x80 - Reserved
+ * - 0x02-0x04 - Payload type (000=LLCP, 001=NCI, 010=HCI, 011=Digital,
+ * 100=Proprietary)
+ * - 0x05-0x80 - Reserved
**/
-#define NFC_LLCP_RAW_HEADER_SIZE 2
-#define NFC_LLCP_DIRECTION_RX 0x00
-#define NFC_LLCP_DIRECTION_TX 0x01
+#define NFC_RAW_HEADER_SIZE 2
+#define NFC_DIRECTION_RX 0x00
+#define NFC_DIRECTION_TX 0x01
+
+#define RAW_PAYLOAD_LLCP 0
+#define RAW_PAYLOAD_NCI 1
+#define RAW_PAYLOAD_HCI 2
+#define RAW_PAYLOAD_DIGITAL 3
+#define RAW_PAYLOAD_PROPRIETARY 4
/* socket option names */
#define NFC_LLCP_RW 0
diff --git a/net/nfc/llcp_commands.c b/net/nfc/llcp_commands.c
index bec6ed15f503..a3ad69a4c648 100644
--- a/net/nfc/llcp_commands.c
+++ b/net/nfc/llcp_commands.c
@@ -387,7 +387,7 @@ int nfc_llcp_send_symm(struct nfc_dev *dev)
__net_timestamp(skb);
- nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_TX);
+ nfc_llcp_send_to_raw_sock(local, skb, NFC_DIRECTION_TX);
return nfc_data_exchange(dev, local->target_idx, skb,
nfc_llcp_recv, local);
diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index b4671958fcf9..f6278da68763 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -680,16 +680,17 @@ void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
continue;
if (skb_copy == NULL) {
- skb_copy = __pskb_copy(skb, NFC_LLCP_RAW_HEADER_SIZE,
+ skb_copy = __pskb_copy(skb, NFC_RAW_HEADER_SIZE,
GFP_ATOMIC);
if (skb_copy == NULL)
continue;
- data = skb_push(skb_copy, NFC_LLCP_RAW_HEADER_SIZE);
+ data = skb_push(skb_copy, NFC_RAW_HEADER_SIZE);
data[0] = local->dev ? local->dev->idx : 0xFF;
- data[1] = direction;
+ data[1] = direction & 0x01;
+ data[1] |= (RAW_PAYLOAD_LLCP << 1);
}
nskb = skb_clone(skb_copy, GFP_ATOMIC);
@@ -747,7 +748,7 @@ static void nfc_llcp_tx_work(struct work_struct *work)
__net_timestamp(skb);
nfc_llcp_send_to_raw_sock(local, skb,
- NFC_LLCP_DIRECTION_TX);
+ NFC_DIRECTION_TX);
ret = nfc_data_exchange(local->dev, local->target_idx,
skb, nfc_llcp_recv, local);
@@ -1476,7 +1477,7 @@ static void nfc_llcp_rx_work(struct work_struct *work)
__net_timestamp(skb);
- nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_RX);
+ nfc_llcp_send_to_raw_sock(local, skb, NFC_DIRECTION_RX);
nfc_llcp_rx_skb(local, skb);
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index 9d6e74f7e6b3..88d60064890e 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -40,6 +40,12 @@ struct nfc_rawsock {
struct work_struct tx_work;
bool tx_work_scheduled;
};
+
+struct nfc_sock_list {
+ struct hlist_head head;
+ rwlock_t lock;
+};
+
#define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
#define to_rawsock_sk(_tx_work) \
((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index c27a6e86cae4..8627c75063e2 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -27,6 +27,24 @@
#include "nfc.h"
+static struct nfc_sock_list raw_sk_list = {
+ .lock = __RW_LOCK_UNLOCKED(raw_sk_list.lock)
+};
+
+void nfc_sock_link(struct nfc_sock_list *l, struct sock *sk)
+{
+ write_lock(&l->lock);
+ sk_add_node(sk, &l->head);
+ write_unlock(&l->lock);
+}
+
+void nfc_sock_unlink(struct nfc_sock_list *l, struct sock *sk)
+{
+ write_lock(&l->lock);
+ sk_del_node_init(sk);
+ write_unlock(&l->lock);
+}
+
static void rawsock_write_queue_purge(struct sock *sk)
{
pr_debug("sk=%p\n", sk);
@@ -57,6 +75,9 @@ static int rawsock_release(struct socket *sock)
if (!sk)
return 0;
+ if (sock->type == SOCK_RAW)
+ nfc_sock_unlink(&raw_sk_list, sk);
+
sock_orphan(sk);
sock_put(sk);
@@ -275,6 +296,26 @@ static const struct proto_ops rawsock_ops = {
.mmap = sock_no_mmap,
};
+static const struct proto_ops rawsock_raw_ops = {
+ .family = PF_NFC,
+ .owner = THIS_MODULE,
+ .release = rawsock_release,
+ .bind = sock_no_bind,
+ .connect = sock_no_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = sock_no_getname,
+ .poll = datagram_poll,
+ .ioctl = sock_no_ioctl,
+ .listen = sock_no_listen,
+ .shutdown = sock_no_shutdown,
+ .setsockopt = sock_no_setsockopt,
+ .getsockopt = sock_no_getsockopt,
+ .sendmsg = sock_no_sendmsg,
+ .recvmsg = rawsock_recvmsg,
+ .mmap = sock_no_mmap,
+};
+
static void rawsock_destruct(struct sock *sk)
{
pr_debug("sk=%p\n", sk);
@@ -300,10 +341,13 @@ static int rawsock_create(struct net *net, struct socket *sock,
pr_debug("sock=%p\n", sock);
- if (sock->type != SOCK_SEQPACKET)
+ if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW))
return -ESOCKTNOSUPPORT;
- sock->ops = &rawsock_ops;
+ if (sock->type == SOCK_RAW)
+ sock->ops = &rawsock_raw_ops;
+ else
+ sock->ops = &rawsock_ops;
sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto);
if (!sk)
@@ -313,13 +357,53 @@ static int rawsock_create(struct net *net, struct socket *sock,
sk->sk_protocol = nfc_proto->id;
sk->sk_destruct = rawsock_destruct;
sock->state = SS_UNCONNECTED;
-
- INIT_WORK(&nfc_rawsock(sk)->tx_work, rawsock_tx_work);
- nfc_rawsock(sk)->tx_work_scheduled = false;
+ if (sock->type == SOCK_RAW)
+ nfc_sock_link(&raw_sk_list, sk);
+ else {
+ INIT_WORK(&nfc_rawsock(sk)->tx_work, rawsock_tx_work);
+ nfc_rawsock(sk)->tx_work_scheduled = false;
+ }
return 0;
}
+void nfc_send_to_raw_sock(struct nfc_dev *dev, struct sk_buff *skb,
+ u8 payload_type, u8 direction)
+{
+ struct sk_buff *skb_copy = NULL, *nskb;
+ struct sock *sk;
+ u8 *data;
+
+ read_lock(&raw_sk_list.lock);
+
+ sk_for_each(sk, &raw_sk_list.head) {
+ if (!skb_copy) {
+ skb_copy = __pskb_copy(skb, NFC_RAW_HEADER_SIZE,
+ GFP_ATOMIC);
+ if (!skb_copy)
+ continue;
+
+ data = skb_push(skb_copy, NFC_RAW_HEADER_SIZE);
+
+ data[0] = dev ? dev->idx : 0xFF;
+ data[1] = direction & 0x01;
+ data[1] |= (payload_type << 1);
+ }
+
+ nskb = skb_clone(skb_copy, GFP_ATOMIC);
+ if (!nskb)
+ continue;
+
+ if (sock_queue_rcv_skb(sk, nskb))
+ kfree_skb(nskb);
+ }
+
+ read_unlock(&raw_sk_list.lock);
+
+ kfree_skb(skb_copy);
+}
+EXPORT_SYMBOL(nfc_send_to_raw_sock);
+
static struct proto rawsock_proto = {
.name = "NFC_RAW",
.owner = THIS_MODULE,
OpenPOWER on IntegriCloud