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Diffstat (limited to 'net/nfc/llcp/llcp.c')
-rw-r--r--net/nfc/llcp/llcp.c131
1 files changed, 70 insertions, 61 deletions
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index 82f0f7588b4..c12c5ef3d03 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -56,7 +56,7 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
sk_for_each_safe(sk, node, tmp, &local->sockets.head) {
llcp_sock = nfc_llcp_sock(sk);
- lock_sock(sk);
+ bh_lock_sock(sk);
if (sk->sk_state == LLCP_CONNECTED)
nfc_put_device(llcp_sock->dev);
@@ -68,26 +68,26 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
accept_queue) {
accept_sk = &lsk->sk;
- lock_sock(accept_sk);
+ bh_lock_sock(accept_sk);
nfc_llcp_accept_unlink(accept_sk);
accept_sk->sk_state = LLCP_CLOSED;
- release_sock(accept_sk);
+ bh_unlock_sock(accept_sk);
sock_orphan(accept_sk);
}
if (listen == true) {
- release_sock(sk);
+ bh_unlock_sock(sk);
continue;
}
}
sk->sk_state = LLCP_CLOSED;
- release_sock(sk);
+ bh_unlock_sock(sk);
sock_orphan(sk);
@@ -114,9 +114,9 @@ static void local_release(struct kref *ref)
nfc_llcp_socket_release(local, false);
del_timer_sync(&local->link_timer);
skb_queue_purge(&local->tx_queue);
- destroy_workqueue(local->tx_wq);
- destroy_workqueue(local->rx_wq);
- destroy_workqueue(local->timeout_wq);
+ cancel_work_sync(&local->tx_work);
+ cancel_work_sync(&local->rx_work);
+ cancel_work_sync(&local->timeout_work);
kfree_skb(local->rx_pending);
kfree(local);
}
@@ -181,7 +181,7 @@ static void nfc_llcp_symm_timer(unsigned long data)
pr_err("SYMM timeout\n");
- queue_work(local->timeout_wq, &local->timeout_work);
+ queue_work(system_nrt_wq, &local->timeout_work);
}
struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev)
@@ -426,6 +426,7 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
u8 *miux_tlv, miux_length;
__be16 miux;
u8 gb_len = 0;
+ int ret = 0;
version = LLCP_VERSION_11;
version_tlv = nfc_llcp_build_tlv(LLCP_TLV_VERSION, &version,
@@ -450,8 +451,8 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
gb_len += ARRAY_SIZE(llcp_magic);
if (gb_len > NFC_MAX_GT_LEN) {
- kfree(version_tlv);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out;
}
gb_cur = local->gb;
@@ -471,12 +472,15 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
memcpy(gb_cur, miux_tlv, miux_length);
gb_cur += miux_length;
+ local->gb_len = gb_len;
+
+out:
kfree(version_tlv);
kfree(lto_tlv);
+ kfree(wks_tlv);
+ kfree(miux_tlv);
- local->gb_len = gb_len;
-
- return 0;
+ return ret;
}
u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)
@@ -554,6 +558,46 @@ static void nfc_llcp_set_nrns(struct nfc_llcp_sock *sock, struct sk_buff *pdu)
sock->recv_ack_n = (sock->recv_n - 1) % 16;
}
+void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local,
+ struct sk_buff *skb, u8 direction)
+{
+ struct hlist_node *node;
+ struct sk_buff *skb_copy = NULL, *nskb;
+ struct sock *sk;
+ u8 *data;
+
+ read_lock(&local->raw_sockets.lock);
+
+ sk_for_each(sk, node, &local->raw_sockets.head) {
+ if (sk->sk_state != LLCP_BOUND)
+ continue;
+
+ if (skb_copy == NULL) {
+ skb_copy = __pskb_copy(skb, NFC_LLCP_RAW_HEADER_SIZE,
+ GFP_ATOMIC);
+
+ if (skb_copy == NULL)
+ continue;
+
+ data = skb_push(skb_copy, NFC_LLCP_RAW_HEADER_SIZE);
+
+ data[0] = local->dev ? local->dev->idx : 0xFF;
+ data[1] = direction;
+ }
+
+ nskb = skb_clone(skb_copy, GFP_ATOMIC);
+ if (!nskb)
+ continue;
+
+ if (sock_queue_rcv_skb(sk, nskb))
+ kfree_skb(nskb);
+ }
+
+ read_unlock(&local->raw_sockets.lock);
+
+ kfree_skb(skb_copy);
+}
+
static void nfc_llcp_tx_work(struct work_struct *work)
{
struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local,
@@ -574,6 +618,9 @@ static void nfc_llcp_tx_work(struct work_struct *work)
DUMP_PREFIX_OFFSET, 16, 1,
skb->data, skb->len, true);
+ nfc_llcp_send_to_raw_sock(local, skb,
+ NFC_LLCP_DIRECTION_TX);
+
ret = nfc_data_exchange(local->dev, local->target_idx,
skb, nfc_llcp_recv, local);
@@ -1018,6 +1065,8 @@ static void nfc_llcp_rx_work(struct work_struct *work)
print_hex_dump(KERN_DEBUG, "LLCP Rx: ", DUMP_PREFIX_OFFSET,
16, 1, skb->data, skb->len, true);
+ nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_RX);
+
switch (ptype) {
case LLCP_PDU_SYMM:
pr_debug("SYMM\n");
@@ -1052,7 +1101,7 @@ static void nfc_llcp_rx_work(struct work_struct *work)
}
- queue_work(local->tx_wq, &local->tx_work);
+ queue_work(system_nrt_wq, &local->tx_work);
kfree_skb(local->rx_pending);
local->rx_pending = NULL;
@@ -1071,7 +1120,7 @@ void nfc_llcp_recv(void *data, struct sk_buff *skb, int err)
local->rx_pending = skb_get(skb);
del_timer(&local->link_timer);
- queue_work(local->rx_wq, &local->rx_work);
+ queue_work(system_nrt_wq, &local->rx_work);
return;
}
@@ -1086,7 +1135,7 @@ int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb)
local->rx_pending = skb_get(skb);
del_timer(&local->link_timer);
- queue_work(local->rx_wq, &local->rx_work);
+ queue_work(system_nrt_wq, &local->rx_work);
return 0;
}
@@ -1121,7 +1170,7 @@ void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
if (rf_mode == NFC_RF_INITIATOR) {
pr_debug("Queueing Tx work\n");
- queue_work(local->tx_wq, &local->tx_work);
+ queue_work(system_nrt_wq, &local->tx_work);
} else {
mod_timer(&local->link_timer,
jiffies + msecs_to_jiffies(local->remote_lto));
@@ -1130,10 +1179,7 @@ void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
int nfc_llcp_register_device(struct nfc_dev *ndev)
{
- struct device *dev = &ndev->dev;
struct nfc_llcp_local *local;
- char name[32];
- int err;
local = kzalloc(sizeof(struct nfc_llcp_local), GFP_KERNEL);
if (local == NULL)
@@ -1149,41 +1195,15 @@ int nfc_llcp_register_device(struct nfc_dev *ndev)
skb_queue_head_init(&local->tx_queue);
INIT_WORK(&local->tx_work, nfc_llcp_tx_work);
- snprintf(name, sizeof(name), "%s_llcp_tx_wq", dev_name(dev));
- local->tx_wq =
- alloc_workqueue(name,
- WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM,
- 1);
- if (local->tx_wq == NULL) {
- err = -ENOMEM;
- goto err_local;
- }
local->rx_pending = NULL;
INIT_WORK(&local->rx_work, nfc_llcp_rx_work);
- snprintf(name, sizeof(name), "%s_llcp_rx_wq", dev_name(dev));
- local->rx_wq =
- alloc_workqueue(name,
- WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM,
- 1);
- if (local->rx_wq == NULL) {
- err = -ENOMEM;
- goto err_tx_wq;
- }
INIT_WORK(&local->timeout_work, nfc_llcp_timeout_work);
- snprintf(name, sizeof(name), "%s_llcp_timeout_wq", dev_name(dev));
- local->timeout_wq =
- alloc_workqueue(name,
- WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM,
- 1);
- if (local->timeout_wq == NULL) {
- err = -ENOMEM;
- goto err_rx_wq;
- }
- local->sockets.lock = __RW_LOCK_UNLOCKED(local->sockets.lock);
- local->connecting_sockets.lock = __RW_LOCK_UNLOCKED(local->connecting_sockets.lock);
+ rwlock_init(&local->sockets.lock);
+ rwlock_init(&local->connecting_sockets.lock);
+ rwlock_init(&local->raw_sockets.lock);
nfc_llcp_build_gb(local);
@@ -1193,17 +1213,6 @@ int nfc_llcp_register_device(struct nfc_dev *ndev)
list_add(&llcp_devices, &local->list);
return 0;
-
-err_rx_wq:
- destroy_workqueue(local->rx_wq);
-
-err_tx_wq:
- destroy_workqueue(local->tx_wq);
-
-err_local:
- kfree(local);
-
- return 0;
}
void nfc_llcp_unregister_device(struct nfc_dev *dev)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-25 07:23:39 +0000