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-rw-r--r--net/bluetooth/l2cap_core.c14
-rw-r--r--net/bluetooth/mgmt.c2
-rw-r--r--net/mac80211/mlme.c19
-rw-r--r--net/mac80211/rc80211_minstrel_ht.c2
-rw-r--r--net/mac80211/rx.c5
-rw-r--r--net/nfc/core.c38
-rw-r--r--net/nfc/hci/command.c26
-rw-r--r--net/nfc/hci/core.c104
-rw-r--r--net/nfc/hci/hci.h12
-rw-r--r--net/nfc/hci/shdlc.c38
-rw-r--r--net/nfc/llcp/llcp.c342
-rw-r--r--net/nfc/llcp/llcp.h5
-rw-r--r--net/nfc/llcp/sock.c33
-rw-r--r--net/nfc/nci/core.c5
-rw-r--r--net/nfc/nci/ntf.c15
-rw-r--r--net/nfc/netlink.c9
-rw-r--r--net/nfc/rawsock.c5
17 files changed, 424 insertions, 250 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 4ca88247b7c..d42dfdc83eb 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3278,12 +3278,14 @@ static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len)
while (len >= L2CAP_CONF_OPT_SIZE) {
len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
- switch (type) {
- case L2CAP_CONF_RFC:
- if (olen == sizeof(rfc))
- memcpy(&rfc, (void *)val, olen);
- goto done;
- }
+ if (type != L2CAP_CONF_RFC)
+ continue;
+
+ if (olen != sizeof(rfc))
+ break;
+
+ memcpy(&rfc, (void *)val, olen);
+ goto done;
}
/* Use sane default values in case a misbehaving remote device
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index c72307cc25f..a6e0f3d8da6 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1598,7 +1598,7 @@ static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
else
conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr);
- if (!conn) {
+ if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) {
err = cmd_status(sk, hdev->id, MGMT_OP_DISCONNECT,
MGMT_STATUS_NOT_CONNECTED);
goto failed;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7c0613ce38b..cef0c9e79ab 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1322,7 +1322,6 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
u32 changed = 0;
- u8 bssid[ETH_ALEN];
ASSERT_MGD_MTX(ifmgd);
@@ -1334,10 +1333,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
ieee80211_stop_poll(sdata);
- memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
-
ifmgd->associated = NULL;
- memset(ifmgd->bssid, 0, ETH_ALEN);
/*
* we need to commit the associated = NULL change because the
@@ -1357,7 +1353,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
netif_carrier_off(sdata->dev);
mutex_lock(&local->sta_mtx);
- sta = sta_info_get(sdata, bssid);
+ sta = sta_info_get(sdata, ifmgd->bssid);
if (sta) {
set_sta_flag(sta, WLAN_STA_BLOCK_BA);
ieee80211_sta_tear_down_BA_sessions(sta, tx);
@@ -1381,13 +1377,16 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
/* deauthenticate/disassociate now */
if (tx || frame_buf)
- ieee80211_send_deauth_disassoc(sdata, bssid, stype, reason,
- tx, frame_buf);
+ ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
+ reason, tx, frame_buf);
/* flush out frame */
if (tx)
drv_flush(local, false);
+ /* clear bssid only after building the needed mgmt frames */
+ memset(ifmgd->bssid, 0, ETH_ALEN);
+
/* remove AP and TDLS peers */
sta_info_flush(local, sdata);
@@ -2168,15 +2167,13 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
mgmt->sa, status_code);
ieee80211_destroy_assoc_data(sdata, false);
} else {
- sdata_info(sdata, "associated\n");
-
if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) {
/* oops -- internal error -- send timeout for now */
- ieee80211_destroy_assoc_data(sdata, true);
- sta_info_destroy_addr(sdata, mgmt->bssid);
+ ieee80211_destroy_assoc_data(sdata, false);
cfg80211_put_bss(*bss);
return RX_MGMT_CFG80211_ASSOC_TIMEOUT;
}
+ sdata_info(sdata, "associated\n");
/*
* destroy assoc_data afterwards, as otherwise an idle
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index ee748183b92..fb1d4aa65e8 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -813,7 +813,7 @@ minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
max_rates = sband->n_bitrates;
}
- msp = kzalloc(sizeof(struct minstrel_ht_sta), gfp);
+ msp = kzalloc(sizeof(*msp), gfp);
if (!msp)
return NULL;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 1d7a58098e3..090d417919a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2411,7 +2411,7 @@ ieee80211_rx_h_action_return(struct ieee80211_rx_data *rx)
* frames that we didn't handle, including returning unknown
* ones. For all other modes we will return them to the sender,
* setting the 0x80 bit in the action category, as required by
- * 802.11-2007 7.3.1.11.
+ * 802.11-2012 9.24.4.
* Newer versions of hostapd shall also use the management frame
* registration mechanisms, but older ones still use cooked
* monitor interfaces so push all frames there.
@@ -2421,6 +2421,9 @@ ieee80211_rx_h_action_return(struct ieee80211_rx_data *rx)
sdata->vif.type == NL80211_IFTYPE_AP_VLAN))
return RX_DROP_MONITOR;
+ if (is_multicast_ether_addr(mgmt->da))
+ return RX_DROP_MONITOR;
+
/* do not return rejected action frames */
if (mgmt->u.action.category & 0x80)
return RX_DROP_UNUSABLE;
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 4177bb5104b..ff749794bc5 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -29,6 +29,8 @@
#include <linux/slab.h>
#include <linux/nfc.h>
+#include <net/genetlink.h>
+
#include "nfc.h"
#define VERSION "0.1"
@@ -560,6 +562,8 @@ EXPORT_SYMBOL(nfc_alloc_recv_skb);
* The device driver must call this function when one or many nfc targets
* are found. After calling this function, the device driver must stop
* polling for targets.
+ * NOTE: This function can be called with targets=NULL and n_targets=0 to
+ * notify a driver error, meaning that the polling operation cannot complete.
* IMPORTANT: this function must not be called from an atomic context.
* In addition, it must also not be called from a context that would prevent
* the NFC Core to call other nfc ops entry point concurrently.
@@ -571,23 +575,33 @@ int nfc_targets_found(struct nfc_dev *dev,
pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets);
- dev->polling = false;
-
for (i = 0; i < n_targets; i++)
targets[i].idx = dev->target_next_idx++;
device_lock(&dev->dev);
+ if (dev->polling == false) {
+ device_unlock(&dev->dev);
+ return 0;
+ }
+
+ dev->polling = false;
+
dev->targets_generation++;
kfree(dev->targets);
- dev->targets = kmemdup(targets, n_targets * sizeof(struct nfc_target),
- GFP_ATOMIC);
+ dev->targets = NULL;
- if (!dev->targets) {
- dev->n_targets = 0;
- device_unlock(&dev->dev);
- return -ENOMEM;
+ if (targets) {
+ dev->targets = kmemdup(targets,
+ n_targets * sizeof(struct nfc_target),
+ GFP_ATOMIC);
+
+ if (!dev->targets) {
+ dev->n_targets = 0;
+ device_unlock(&dev->dev);
+ return -ENOMEM;
+ }
}
dev->n_targets = n_targets;
@@ -651,6 +665,12 @@ int nfc_target_lost(struct nfc_dev *dev, u32 target_idx)
}
EXPORT_SYMBOL(nfc_target_lost);
+inline void nfc_driver_failure(struct nfc_dev *dev, int err)
+{
+ nfc_targets_found(dev, NULL, 0);
+}
+EXPORT_SYMBOL(nfc_driver_failure);
+
static void nfc_release(struct device *d)
{
struct nfc_dev *dev = to_nfc_dev(d);
@@ -906,3 +926,5 @@ MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
MODULE_DESCRIPTION("NFC Core ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_NFC);
+MODULE_ALIAS_GENL_FAMILY(NFC_GENL_NAME);
diff --git a/net/nfc/hci/command.c b/net/nfc/hci/command.c
index 8729abf5f18..46362ef979d 100644
--- a/net/nfc/hci/command.c
+++ b/net/nfc/hci/command.c
@@ -28,26 +28,14 @@
#include "hci.h"
-static int nfc_hci_result_to_errno(u8 result)
-{
- switch (result) {
- case NFC_HCI_ANY_OK:
- return 0;
- case NFC_HCI_ANY_E_TIMEOUT:
- return -ETIMEDOUT;
- default:
- return -1;
- }
-}
-
-static void nfc_hci_execute_cb(struct nfc_hci_dev *hdev, u8 result,
+static void nfc_hci_execute_cb(struct nfc_hci_dev *hdev, int err,
struct sk_buff *skb, void *cb_data)
{
struct hcp_exec_waiter *hcp_ew = (struct hcp_exec_waiter *)cb_data;
- pr_debug("HCI Cmd completed with HCI result=%d\n", result);
+ pr_debug("HCI Cmd completed with result=%d\n", err);
- hcp_ew->exec_result = nfc_hci_result_to_errno(result);
+ hcp_ew->exec_result = err;
if (hcp_ew->exec_result == 0)
hcp_ew->result_skb = skb;
else
@@ -311,9 +299,9 @@ int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev)
}
EXPORT_SYMBOL(nfc_hci_disconnect_all_gates);
-int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate)
+int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
+ u8 pipe)
{
- u8 pipe = NFC_HCI_INVALID_PIPE;
bool pipe_created = false;
int r;
@@ -322,6 +310,9 @@ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate)
if (hdev->gate2pipe[dest_gate] != NFC_HCI_INVALID_PIPE)
return -EADDRINUSE;
+ if (pipe != NFC_HCI_INVALID_PIPE)
+ goto pipe_is_open;
+
switch (dest_gate) {
case NFC_HCI_LINK_MGMT_GATE:
pipe = NFC_HCI_LINK_MGMT_PIPE;
@@ -347,6 +338,7 @@ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate)
return r;
}
+pipe_is_open:
hdev->gate2pipe[dest_gate] = pipe;
return 0;
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index a8b0b71e8f8..36717cebfbb 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -32,6 +32,18 @@
/* Largest headroom needed for outgoing HCI commands */
#define HCI_CMDS_HEADROOM 1
+static int nfc_hci_result_to_errno(u8 result)
+{
+ switch (result) {
+ case NFC_HCI_ANY_OK:
+ return 0;
+ case NFC_HCI_ANY_E_TIMEOUT:
+ return -ETIME;
+ default:
+ return -1;
+ }
+}
+
static void nfc_hci_msg_tx_work(struct work_struct *work)
{
struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
@@ -46,7 +58,7 @@ static void nfc_hci_msg_tx_work(struct work_struct *work)
if (timer_pending(&hdev->cmd_timer) == 0) {
if (hdev->cmd_pending_msg->cb)
hdev->cmd_pending_msg->cb(hdev,
- NFC_HCI_ANY_E_TIMEOUT,
+ -ETIME,
NULL,
hdev->
cmd_pending_msg->
@@ -71,8 +83,7 @@ next_msg:
kfree_skb(skb);
skb_queue_purge(&msg->msg_frags);
if (msg->cb)
- msg->cb(hdev, NFC_HCI_ANY_E_NOK, NULL,
- msg->cb_context);
+ msg->cb(hdev, r, NULL, msg->cb_context);
kfree(msg);
break;
}
@@ -116,20 +127,13 @@ static void nfc_hci_msg_rx_work(struct work_struct *work)
}
}
-void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
- struct sk_buff *skb)
+static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err,
+ struct sk_buff *skb)
{
- mutex_lock(&hdev->msg_tx_mutex);
-
- if (hdev->cmd_pending_msg == NULL) {
- kfree_skb(skb);
- goto exit;
- }
-
del_timer_sync(&hdev->cmd_timer);
if (hdev->cmd_pending_msg->cb)
- hdev->cmd_pending_msg->cb(hdev, result, skb,
+ hdev->cmd_pending_msg->cb(hdev, err, skb,
hdev->cmd_pending_msg->cb_context);
else
kfree_skb(skb);
@@ -138,6 +142,19 @@ void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
hdev->cmd_pending_msg = NULL;
queue_work(hdev->msg_tx_wq, &hdev->msg_tx_work);
+}
+
+void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
+ struct sk_buff *skb)
+{
+ mutex_lock(&hdev->msg_tx_mutex);
+
+ if (hdev->cmd_pending_msg == NULL) {
+ kfree_skb(skb);
+ goto exit;
+ }
+
+ __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb);
exit:
mutex_unlock(&hdev->msg_tx_mutex);
@@ -213,7 +230,7 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
}
break;
case NFC_HCI_RF_READER_B_GATE:
- targets->supported_protocols = NFC_PROTO_ISO14443_MASK;
+ targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
break;
default:
if (hdev->ops->target_from_gate)
@@ -298,15 +315,15 @@ static void nfc_hci_cmd_timeout(unsigned long data)
}
static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count,
- u8 gates[])
+ struct nfc_hci_gate *gates)
{
int r;
- u8 *p = gates;
while (gate_count--) {
- r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, *p);
+ r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
+ gates->gate, gates->pipe);
if (r < 0)
return r;
- p++;
+ gates++;
}
return 0;
@@ -316,14 +333,13 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
{
struct sk_buff *skb = NULL;
int r;
- u8 hci_gates[] = { /* NFC_HCI_ADMIN_GATE MUST be first */
- NFC_HCI_ADMIN_GATE, NFC_HCI_LOOPBACK_GATE,
- NFC_HCI_ID_MGMT_GATE, NFC_HCI_LINK_MGMT_GATE,
- NFC_HCI_RF_READER_B_GATE, NFC_HCI_RF_READER_A_GATE
- };
+
+ if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE)
+ return -EPROTO;
r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
- NFC_HCI_ADMIN_GATE);
+ hdev->init_data.gates[0].gate,
+ hdev->init_data.gates[0].pipe);
if (r < 0)
goto exit;
@@ -351,10 +367,6 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
if (r < 0)
goto exit;
- r = hci_dev_connect_gates(hdev, sizeof(hci_gates), hci_gates);
- if (r < 0)
- goto disconnect_all;
-
r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count,
hdev->init_data.gates);
if (r < 0)
@@ -717,6 +729,27 @@ void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev)
}
EXPORT_SYMBOL(nfc_hci_get_clientdata);
+static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err)
+{
+ mutex_lock(&hdev->msg_tx_mutex);
+
+ if (hdev->cmd_pending_msg == NULL) {
+ nfc_driver_failure(hdev->ndev, err);
+ goto exit;
+ }
+
+ __nfc_hci_cmd_completion(hdev, err, NULL);
+
+exit:
+ mutex_unlock(&hdev->msg_tx_mutex);
+}
+
+void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
+{
+ nfc_hci_failure(hdev, err);
+}
+EXPORT_SYMBOL(nfc_hci_driver_failure);
+
void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
{
struct hcp_packet *packet;
@@ -727,16 +760,6 @@ void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
struct sk_buff *frag_skb;
int msg_len;
- if (skb == NULL) {
- /* TODO ELa: lower layer had permanent failure, need to
- * propagate that up
- */
-
- skb_queue_purge(&hdev->rx_hcp_frags);
-
- return;
- }
-
packet = (struct hcp_packet *)skb->data;
if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) {
skb_queue_tail(&hdev->rx_hcp_frags, skb);
@@ -757,9 +780,8 @@ void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN +
msg_len, GFP_KERNEL);
if (hcp_skb == NULL) {
- /* TODO ELa: cannot deliver HCP message. How to
- * propagate error up?
- */
+ nfc_hci_failure(hdev, -ENOMEM);
+ return;
}
*skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
diff --git a/net/nfc/hci/hci.h b/net/nfc/hci/hci.h
index 45f2fe4fd48..fa9a21e9223 100644
--- a/net/nfc/hci/hci.h
+++ b/net/nfc/hci/hci.h
@@ -37,10 +37,11 @@ struct hcp_packet {
/*
* HCI command execution completion callback.
- * result will be one of the HCI response codes.
- * skb contains the response data and must be disposed.
+ * result will be a standard linux error (may be converted from HCI response)
+ * skb contains the response data and must be disposed, or may be NULL if
+ * an error occured
*/
-typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, u8 result,
+typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, int result,
struct sk_buff *skb, void *cb_data);
struct hcp_exec_waiter {
@@ -131,9 +132,4 @@ void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
#define NFC_HCI_ANY_E_REG_ACCESS_DENIED 0x0a
#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED 0x0b
-/* Pipes */
-#define NFC_HCI_INVALID_PIPE 0x80
-#define NFC_HCI_LINK_MGMT_PIPE 0x00
-#define NFC_HCI_ADMIN_PIPE 0x01
-
#endif /* __LOCAL_HCI_H */
diff --git a/net/nfc/hci/shdlc.c b/net/nfc/hci/shdlc.c
index 6b836e6242b..6f840c18c89 100644
--- a/net/nfc/hci/shdlc.c
+++ b/net/nfc/hci/shdlc.c
@@ -340,15 +340,6 @@ static void nfc_shdlc_connect_complete(struct nfc_shdlc *shdlc, int r)
shdlc->state = SHDLC_CONNECTED;
} else {
shdlc->state = SHDLC_DISCONNECTED;
-
- /*
- * TODO: Could it be possible that there are pending
- * executing commands that are waiting for connect to complete
- * before they can be carried? As connect is a blocking
- * operation, it would require that the userspace process can
- * send commands on the same device from a second thread before
- * the device is up. I don't think that is possible, is it?
- */
}
shdlc->connect_result = r;
@@ -413,12 +404,12 @@ static void nfc_shdlc_rcv_u_frame(struct nfc_shdlc *shdlc,
r = nfc_shdlc_connect_send_ua(shdlc);
nfc_shdlc_connect_complete(shdlc, r);
}
- } else if (shdlc->state > SHDLC_NEGOCIATING) {
+ } else if (shdlc->state == SHDLC_CONNECTED) {
/*
- * TODO: Chip wants to reset link
- * send ua, empty skb lists, reset counters
- * propagate info to HCI layer
+ * Chip wants to reset link. This is unexpected and
+ * unsupported.
*/
+ shdlc->hard_fault = -ECONNRESET;
}
break;
case U_FRAME_UA:
@@ -523,10 +514,6 @@ static void nfc_shdlc_handle_send_queue(struct nfc_shdlc *shdlc)
r = shdlc->ops->xmit(shdlc, skb);
if (r < 0) {
- /*
- * TODO: Cannot send, shdlc machine is dead, we
- * must propagate the information up to HCI.
- */
shdlc->hard_fault = r;
break;
}
@@ -590,6 +577,11 @@ static void nfc_shdlc_sm_work(struct work_struct *work)
skb_queue_purge(&shdlc->ack_pending_q);
break;
case SHDLC_CONNECTING:
+ if (shdlc->hard_fault) {
+ nfc_shdlc_connect_complete(shdlc, shdlc->hard_fault);
+ break;
+ }
+
if (shdlc->connect_tries++ < 5)
r = nfc_shdlc_connect_initiate(shdlc);
else
@@ -610,6 +602,11 @@ static void nfc_shdlc_sm_work(struct work_struct *work)
}
nfc_shdlc_handle_rcv_queue(shdlc);
+
+ if (shdlc->hard_fault) {
+ nfc_shdlc_connect_complete(shdlc, shdlc->hard_fault);
+ break;
+ }
break;
case SHDLC_CONNECTED:
nfc_shdlc_handle_rcv_queue(shdlc);
@@ -637,10 +634,7 @@ static void nfc_shdlc_sm_work(struct work_struct *work)
}
if (shdlc->hard_fault) {
- /*
- * TODO: Handle hard_fault that occured during
- * this invocation of the shdlc worker
- */
+ nfc_hci_driver_failure(shdlc->hdev, shdlc->hard_fault);
}
break;
default:
@@ -923,8 +917,6 @@ void nfc_shdlc_free(struct nfc_shdlc *shdlc)
{
pr_debug("\n");
- /* TODO: Check that this cannot be called while still in use */
-
nfc_hci_unregister_device(shdlc->hdev);
nfc_hci_free_device(shdlc->hdev);
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index 5d503eeb15a..82f0f7588b4 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -45,7 +45,7 @@ void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *sk)
write_unlock(&l->lock);
}
-static void nfc_llcp_socket_release(struct nfc_llcp_local *local)
+static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
{
struct sock *sk;
struct hlist_node *node, *tmp;
@@ -78,6 +78,11 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local)
sock_orphan(accept_sk);
}
+
+ if (listen == true) {
+ release_sock(sk);
+ continue;
+ }
}
sk->sk_state = LLCP_CLOSED;
@@ -106,7 +111,7 @@ static void local_release(struct kref *ref)
local = container_of(ref, struct nfc_llcp_local, ref);
list_del(&local->list);
- nfc_llcp_socket_release(local);
+ nfc_llcp_socket_release(local, false);
del_timer_sync(&local->link_timer);
skb_queue_purge(&local->tx_queue);
destroy_workqueue(local->tx_wq);
@@ -118,23 +123,48 @@ static void local_release(struct kref *ref)
int nfc_llcp_local_put(struct nfc_llcp_local *local)
{
- WARN_ON(local == NULL);
-
if (local == NULL)
return 0;
return kref_put(&local->ref, local_release);
}
-static void nfc_llcp_clear_sdp(struct nfc_llcp_local *local)
+static struct nfc_llcp_sock *nfc_llcp_sock_get(struct nfc_llcp_local *local,
+ u8 ssap, u8 dsap)
{
- mutex_lock(&local->sdp_lock);
+ struct sock *sk;
+ struct hlist_node *node;
+ struct nfc_llcp_sock *llcp_sock;
- local->local_wks = 0;
- local->local_sdp = 0;
- local->local_sap = 0;
+ pr_debug("ssap dsap %d %d\n", ssap, dsap);
- mutex_unlock(&local->sdp_lock);
+ if (ssap == 0 && dsap == 0)
+ return NULL;
+
+ read_lock(&local->sockets.lock);
+
+ llcp_sock = NULL;
+
+ sk_for_each(sk, node, &local->sockets.head) {
+ llcp_sock = nfc_llcp_sock(sk);
+
+ if (llcp_sock->ssap == ssap && llcp_sock->dsap == dsap)
+ break;
+ }
+
+ read_unlock(&local->sockets.lock);
+
+ if (llcp_sock == NULL)
+ return NULL;
+
+ sock_hold(&llcp_sock->sk);
+
+ return llcp_sock;
+}
+
+static void nfc_llcp_sock_put(struct nfc_llcp_sock *sock)
+{
+ sock_put(&sock->sk);
}
static void nfc_llcp_timeout_work(struct work_struct *work)
@@ -197,6 +227,51 @@ static int nfc_llcp_wks_sap(char *service_name, size_t service_name_len)
return -EINVAL;
}
+static
+struct nfc_llcp_sock *nfc_llcp_sock_from_sn(struct nfc_llcp_local *local,
+ u8 *sn, size_t sn_len)
+{
+ struct sock *sk;
+ struct hlist_node *node;
+ struct nfc_llcp_sock *llcp_sock, *tmp_sock;
+
+ pr_debug("sn %zd %p\n", sn_len, sn);
+
+ if (sn == NULL || sn_len == 0)
+ return NULL;
+
+ read_lock(&local->sockets.lock);
+
+ llcp_sock = NULL;
+
+ sk_for_each(sk, node, &local->sockets.head) {
+ tmp_sock = nfc_llcp_sock(sk);
+
+ pr_debug("llcp sock %p\n", tmp_sock);
+
+ if (tmp_sock->sk.sk_state != LLCP_LISTEN)
+ continue;
+
+ if (tmp_sock->service_name == NULL ||
+ tmp_sock->service_name_len == 0)
+ continue;
+
+ if (tmp_sock->service_name_len != sn_len)
+ continue;
+
+ if (memcmp(sn, tmp_sock->service_name, sn_len) == 0) {
+ llcp_sock = tmp_sock;
+ break;
+ }
+ }
+
+ read_unlock(&local->sockets.lock);
+
+ pr_debug("Found llcp sock %p\n", llcp_sock);
+
+ return llcp_sock;
+}
+
u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
struct nfc_llcp_sock *sock)
{
@@ -223,41 +298,26 @@ u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
}
/*
- * This is not a well known service,
- * we should try to find a local SDP free spot
+ * Check if there already is a non WKS socket bound
+ * to this service name.
*/
- ssap = find_first_zero_bit(&local->local_sdp, LLCP_SDP_NUM_SAP);
- if (ssap == LLCP_SDP_NUM_SAP) {
+ if (nfc_llcp_sock_from_sn(local, sock->service_name,
+ sock->service_name_len) != NULL) {
mutex_unlock(&local->sdp_lock);
return LLCP_SAP_MAX;
}
- pr_debug("SDP ssap %d\n", LLCP_WKS_NUM_SAP + ssap);
-
- set_bit(ssap, &local->local_sdp);
mutex_unlock(&local->sdp_lock);
- return LLCP_WKS_NUM_SAP + ssap;
-
- } else if (sock->ssap != 0) {
- if (sock->ssap < LLCP_WKS_NUM_SAP) {
- if (!test_bit(sock->ssap, &local->local_wks)) {
- set_bit(sock->ssap, &local->local_wks);
- mutex_unlock(&local->sdp_lock);
-
- return sock->ssap;
- }
+ return LLCP_SDP_UNBOUND;
- } else if (sock->ssap < LLCP_SDP_NUM_SAP) {
- if (!test_bit(sock->ssap - LLCP_WKS_NUM_SAP,
- &local->local_sdp)) {
- set_bit(sock->ssap - LLCP_WKS_NUM_SAP,
- &local->local_sdp);
- mutex_unlock(&local->sdp_lock);
+ } else if (sock->ssap != 0 && sock->ssap < LLCP_WKS_NUM_SAP) {
+ if (!test_bit(sock->ssap, &local->local_wks)) {
+ set_bit(sock->ssap, &local->local_wks);
+ mutex_unlock(&local->sdp_lock);
- return sock->ssap;
- }
+ return sock->ssap;
}
}
@@ -294,8 +354,34 @@ void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap)
local_ssap = ssap;
sdp = &local->local_wks;
} else if (ssap < LLCP_LOCAL_NUM_SAP) {
+ atomic_t *client_cnt;
+
local_ssap = ssap - LLCP_WKS_NUM_SAP;
sdp = &local->local_sdp;
+ client_cnt = &local->local_sdp_cnt[local_ssap];
+
+ pr_debug("%d clients\n", atomic_read(client_cnt));
+
+ mutex_lock(&local->sdp_lock);
+
+ if (atomic_dec_and_test(client_cnt)) {
+ struct nfc_llcp_sock *l_sock;
+
+ pr_debug("No more clients for SAP %d\n", ssap);
+
+ clear_bit(local_ssap, sdp);
+
+ /* Find the listening sock and set it back to UNBOUND */
+ l_sock = nfc_llcp_sock_get(local, ssap, LLCP_SAP_SDP);
+ if (l_sock) {
+ l_sock->ssap = LLCP_SDP_UNBOUND;
+ nfc_llcp_sock_put(l_sock);
+ }
+ }
+
+ mutex_unlock(&local->sdp_lock);
+
+ return;
} else if (ssap < LLCP_MAX_SAP) {
local_ssap = ssap - LLCP_LOCAL_NUM_SAP;
sdp = &local->local_sap;
@@ -310,19 +396,26 @@ void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap)
mutex_unlock(&local->sdp_lock);
}
-u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)
+static u8 nfc_llcp_reserve_sdp_ssap(struct nfc_llcp_local *local)
{
- struct nfc_llcp_local *local;
+ u8 ssap;
- local = nfc_llcp_find_local(dev);
- if (local == NULL) {
- *general_bytes_len = 0;
- return NULL;
+ mutex_lock(&local->sdp_lock);
+
+ ssap = find_first_zero_bit(&local->local_sdp, LLCP_SDP_NUM_SAP);
+ if (ssap == LLCP_SDP_NUM_SAP) {
+ mutex_unlock(&local->sdp_lock);
+
+ return LLCP_SAP_MAX;
}
- *general_bytes_len = local->gb_len;
+ pr_debug("SDP ssap %d\n", LLCP_WKS_NUM_SAP + ssap);
- return local->gb;
+ set_bit(ssap, &local->local_sdp);
+
+ mutex_unlock(&local->sdp_lock);
+
+ return LLCP_WKS_NUM_SAP + ssap;
}
static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
@@ -386,6 +479,23 @@ static int nfc_llcp_build_gb(struct nfc_llcp_local *local)
return 0;
}
+u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)
+{
+ struct nfc_llcp_local *local;
+
+ local = nfc_llcp_find_local(dev);
+ if (local == NULL) {
+ *general_bytes_len = 0;
+ return NULL;
+ }
+
+ nfc_llcp_build_gb(local);
+
+ *general_bytes_len = local->gb_len;
+
+ return local->gb;
+}
+
int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len)
{
struct nfc_llcp_local *local = nfc_llcp_find_local(dev);
@@ -509,74 +619,12 @@ out:
return llcp_sock;
}
-static struct nfc_llcp_sock *nfc_llcp_sock_get(struct nfc_llcp_local *local,
- u8 ssap, u8 dsap)
-{
- struct sock *sk;
- struct hlist_node *node;
- struct nfc_llcp_sock *llcp_sock;
-
- pr_debug("ssap dsap %d %d\n", ssap, dsap);
-
- if (ssap == 0 && dsap == 0)
- return NULL;
-
- read_lock(&local->sockets.lock);
-
- llcp_sock = NULL;
-
- sk_for_each(sk, node, &local->sockets.head) {
- llcp_sock = nfc_llcp_sock(sk);
-
- if (llcp_sock->ssap == ssap &&
- llcp_sock->dsap == dsap)
- break;
- }
-
- read_unlock(&local->sockets.lock);
-
- if (llcp_sock == NULL)
- return NULL;
-
- sock_hold(&llcp_sock->sk);
-
- return llcp_sock;
-}
-
static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local,
u8 *sn, size_t sn_len)
{
- struct sock *sk;
- struct hlist_node *node;
struct nfc_llcp_sock *llcp_sock;
- pr_debug("sn %zd\n", sn_len);
-
- if (sn == NULL || sn_len == 0)
- return NULL;
-
- read_lock(&local->sockets.lock);
-
- llcp_sock = NULL;
-
- sk_for_each(sk, node, &local->sockets.head) {
- llcp_sock = nfc_llcp_sock(sk);
-
- if (llcp_sock->sk.sk_state != LLCP_LISTEN)
- continue;
-
- if (llcp_sock->service_name == NULL ||
- llcp_sock->service_name_len == 0)
- continue;
-
- if (llcp_sock->service_name_len != sn_len)
- continue;
-
- if (memcmp(sn, llcp_sock->service_name, sn_len) == 0)
- break;
- }
-
- read_unlock(&local->sockets.lock);
+ llcp_sock = nfc_llcp_sock_from_sn(local, sn, sn_len);
if (llcp_sock == NULL)
return NULL;
@@ -586,11 +634,6 @@ static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local,
return llcp_sock;
}
-static void nfc_llcp_sock_put(struct nfc_llcp_sock *sock)
-{
- sock_put(&sock->sk);
-}
-
static u8 *nfc_llcp_connect_sn(struct sk_buff *skb, size_t *sn_len)
{
u8 *tlv = &skb->data[2], type, length;
@@ -662,6 +705,21 @@ static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
goto fail;
}
+ if (sock->ssap == LLCP_SDP_UNBOUND) {
+ u8 ssap = nfc_llcp_reserve_sdp_ssap(local);
+
+ pr_debug("First client, reserving %d\n", ssap);
+
+ if (ssap == LLCP_SAP_MAX) {
+ reason = LLCP_DM_REJ;
+ release_sock(&sock->sk);
+ sock_put(&sock->sk);
+ goto fail;
+ }
+
+ sock->ssap = ssap;
+ }
+
new_sk = nfc_llcp_sock_alloc(NULL, parent->sk_type, GFP_ATOMIC);
if (new_sk == NULL) {
reason = LLCP_DM_REJ;
@@ -675,9 +733,21 @@ static void nfc_llcp_recv_connect(struct nfc_llcp_local *local,
new_sock->local = nfc_llcp_local_get(local);
new_sock->miu = local->remote_miu;
new_sock->nfc_protocol = sock->nfc_protocol;
- new_sock->ssap = sock->ssap;
new_sock->dsap = ssap;
+ new_sock->target_idx = local->target_idx;
new_sock->parent = parent;
+ new_sock->ssap = sock->ssap;
+ if (sock->ssap < LLCP_LOCAL_NUM_SAP && sock->ssap >= LLCP_WKS_NUM_SAP) {
+ atomic_t *client_count;
+
+ pr_debug("reserved_ssap %d for %p\n", sock->ssap, new_sock);
+
+ client_count =
+ &local->local_sdp_cnt[sock->ssap - LLCP_WKS_NUM_SAP];
+
+ atomic_inc(client_count);
+ new_sock->reserved_ssap = sock->ssap;
+ }
nfc_llcp_parse_connection_tlv(new_sock, &skb->data[LLCP_HEADER_SIZE],
skb->len - LLCP_HEADER_SIZE);
@@ -886,6 +956,45 @@ static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb)
nfc_llcp_sock_put(llcp_sock);
}
+static void nfc_llcp_recv_dm(struct nfc_llcp_local *local, struct sk_buff *skb)
+{
+ struct nfc_llcp_sock *llcp_sock;
+ struct sock *sk;
+ u8 dsap, ssap, reason;
+
+ dsap = nfc_llcp_dsap(skb);
+ ssap = nfc_llcp_ssap(skb);
+ reason = skb->data[2];
+
+ pr_debug("%d %d reason %d\n", ssap, dsap, reason);
+
+ switch (reason) {
+ case LLCP_DM_NOBOUND:
+ case LLCP_DM_REJ:
+ llcp_sock = nfc_llcp_connecting_sock_get(local, dsap);
+ break;
+
+ default:
+ llcp_sock = nfc_llcp_sock_get(local, dsap, ssap);
+ break;
+ }
+
+ if (llcp_sock == NULL) {
+ pr_err("Invalid DM\n");
+ return;
+ }
+
+ sk = &llcp_sock->sk;
+
+ sk->sk_err = ENXIO;
+ sk->sk_state = LLCP_CLOSED;
+ sk->sk_state_change(sk);
+
+ nfc_llcp_sock_put(llcp_sock);
+
+ return;
+}
+
static void nfc_llcp_rx_work(struct work_struct *work)
{
struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local,
@@ -929,6 +1038,11 @@ static void nfc_llcp_rx_work(struct work_struct *work)
nfc_llcp_recv_cc(local, skb);
break;
+ case LLCP_PDU_DM:
+ pr_debug("DM\n");
+ nfc_llcp_recv_dm(local, skb);
+ break;
+
case LLCP_PDU_I:
case LLCP_PDU_RR:
case LLCP_PDU_RNR:
@@ -985,10 +1099,8 @@ void nfc_llcp_mac_is_down(struct nfc_dev *dev)
if (local == NULL)
return;
- nfc_llcp_clear_sdp(local);
-
/* Close and purge all existing sockets */
- nfc_llcp_socket_release(local);
+ nfc_llcp_socket_release(local, true);
}
void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h
index 7286c86982f..83b8bba5a28 100644
--- a/net/nfc/llcp/llcp.h
+++ b/net/nfc/llcp/llcp.h
@@ -37,6 +37,7 @@ enum llcp_state {
#define LLCP_LOCAL_NUM_SAP 32
#define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP)
#define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP)
+#define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1)
struct nfc_llcp_sock;
@@ -69,6 +70,7 @@ struct nfc_llcp_local {
unsigned long local_wks; /* Well known services */
unsigned long local_sdp; /* Local services */
unsigned long local_sap; /* Local SAPs, not available for discovery */
+ atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP];
/* local */
u8 gb[NFC_MAX_GT_LEN];
@@ -113,6 +115,9 @@ struct nfc_llcp_sock {
/* Is the remote peer ready to receive */
u8 remote_ready;
+ /* Reserved source SAP */
+ u8 reserved_ssap;
+
struct sk_buff_head tx_queue;
struct sk_buff_head tx_pending_queue;
struct sk_buff_head tx_backlog_queue;
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 2c0b317344b..ddeb9aa398f 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -78,11 +78,11 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
struct sockaddr_nfc_llcp llcp_addr;
int len, ret = 0;
- pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
-
if (!addr || addr->sa_family != AF_NFC)
return -EINVAL;
+ pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
+
memset(&llcp_addr, 0, sizeof(llcp_addr));
len = min_t(unsigned int, sizeof(llcp_addr), alen);
memcpy(&llcp_addr, addr, len);
@@ -121,8 +121,12 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
GFP_KERNEL);
llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
- if (llcp_sock->ssap == LLCP_MAX_SAP)
+ if (llcp_sock->ssap == LLCP_SAP_MAX) {
+ ret = -EADDRINUSE;
goto put_dev;
+ }
+
+ llcp_sock->reserved_ssap = llcp_sock->ssap;
nfc_llcp_sock_link(&local->sockets, sk);
@@ -283,22 +287,28 @@ error:
return ret;
}
-static int llcp_sock_getname(struct socket *sock, struct sockaddr *addr,
+static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
int *len, int peer)
{
- struct sockaddr_nfc_llcp *llcp_addr = (struct sockaddr_nfc_llcp *)addr;
struct sock *sk = sock->sk;
struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
+ DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, llcp_addr, uaddr);
- pr_debug("%p\n", sk);
+ if (llcp_sock == NULL || llcp_sock->dev == NULL)
+ return -EBADFD;
+
+ pr_debug("%p %d %d %d\n", sk, llcp_sock->target_idx,
+ llcp_sock->dsap, llcp_sock->ssap);
- if (llcp_sock == NULL)
+ if (llcp_sock == NULL || llcp_sock->dev == NULL)
return -EBADFD;
- addr->sa_family = AF_NFC;
+ uaddr->sa_family = AF_NFC;
+
*len = sizeof(struct sockaddr_nfc_llcp);
llcp_addr->dev_idx = llcp_sock->dev->idx;
+ llcp_addr->target_idx = llcp_sock->target_idx;
llcp_addr->dsap = llcp_sock->dsap;
llcp_addr->ssap = llcp_sock->ssap;
llcp_addr->service_name_len = llcp_sock->service_name_len;
@@ -406,7 +416,8 @@ static int llcp_sock_release(struct socket *sock)
}
}
- nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
+ if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
+ nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
release_sock(sk);
@@ -486,6 +497,9 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
ret = -ENOMEM;
goto put_dev;
}
+
+ llcp_sock->reserved_ssap = llcp_sock->ssap;
+
if (addr->service_name_len == 0)
llcp_sock->dsap = addr->dsap;
else
@@ -687,6 +701,7 @@ struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
llcp_sock->send_n = llcp_sock->send_ack_n = 0;
llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
llcp_sock->remote_ready = 1;
+ llcp_sock->reserved_ssap = LLCP_SAP_MAX;
skb_queue_head_init(&llcp_sock->tx_queue);
skb_queue_head_init(&llcp_sock->tx_pending_queue);
skb_queue_head_init(&llcp_sock->tx_backlog_queue);
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 766a02b1dfa..5bb4da68042 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -194,7 +194,7 @@ static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
}
if ((cmd.num_disc_configs < NCI_MAX_NUM_RF_CONFIGS) &&
- (protocols & NFC_PROTO_ISO14443_MASK)) {
+ (protocols & NFC_PROTO_ISO14443_B_MASK)) {
cmd.disc_configs[cmd.num_disc_configs].rf_tech_and_mode =
NCI_NFC_B_PASSIVE_POLL_MODE;
cmd.disc_configs[cmd.num_disc_configs].frequency = 1;
@@ -486,7 +486,8 @@ static int nci_activate_target(struct nfc_dev *nfc_dev,
param.rf_protocol = NCI_RF_PROTOCOL_T2T;
else if (protocol == NFC_PROTO_FELICA)
param.rf_protocol = NCI_RF_PROTOCOL_T3T;
- else if (protocol == NFC_PROTO_ISO14443)
+ else if (protocol == NFC_PROTO_ISO14443 ||
+ protocol == NFC_PROTO_ISO14443_B)
param.rf_protocol = NCI_RF_PROTOCOL_ISO_DEP;
else
param.rf_protocol = NCI_RF_PROTOCOL_NFC_DEP;
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index cb2646179e5..af7a93b0439 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -106,7 +106,7 @@ static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
nfca_poll->sens_res = __le16_to_cpu(*((__u16 *)data));
data += 2;
- nfca_poll->nfcid1_len = *data++;
+ nfca_poll->nfcid1_len = min_t(__u8, *data++, NFC_NFCID1_MAXSIZE);
pr_debug("sens_res 0x%x, nfcid1_len %d\n",
nfca_poll->sens_res, nfca_poll->nfcid1_len);
@@ -130,7 +130,7 @@ static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
struct rf_tech_specific_params_nfcb_poll *nfcb_poll,
__u8 *data)
{
- nfcb_poll->sensb_res_len = *data++;
+ nfcb_poll->sensb_res_len = min_t(__u8, *data++, NFC_SENSB_RES_MAXSIZE);
pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
@@ -145,7 +145,7 @@ static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
__u8 *data)
{
nfcf_poll->bit_rate = *data++;
- nfcf_poll->sensf_res_len = *data++;
+ nfcf_poll->sensf_res_len = min_t(__u8, *data++, NFC_SENSF_RES_MAXSIZE);
pr_debug("bit_rate %d, sensf_res_len %d\n",
nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
@@ -170,7 +170,10 @@ static int nci_add_new_protocol(struct nci_dev *ndev,
if (rf_protocol == NCI_RF_PROTOCOL_T2T)
protocol = NFC_PROTO_MIFARE_MASK;
else if (rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
- protocol = NFC_PROTO_ISO14443_MASK;
+ if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE)
+ protocol = NFC_PROTO_ISO14443_MASK;
+ else
+ protocol = NFC_PROTO_ISO14443_B_MASK;
else if (rf_protocol == NCI_RF_PROTOCOL_T3T)
protocol = NFC_PROTO_FELICA_MASK;
else
@@ -331,7 +334,7 @@ static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
switch (ntf->activation_rf_tech_and_mode) {
case NCI_NFC_A_PASSIVE_POLL_MODE:
nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
- nfca_poll->rats_res_len = *data++;
+ nfca_poll->rats_res_len = min_t(__u8, *data++, 20);
pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
if (nfca_poll->rats_res_len > 0) {
memcpy(nfca_poll->rats_res,
@@ -341,7 +344,7 @@ static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
case NCI_NFC_B_PASSIVE_POLL_MODE:
nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
- nfcb_poll->attrib_res_len = *data++;
+ nfcb_poll->attrib_res_len = min_t(__u8, *data++, 50);
pr_debug("attrib_res_len %d\n", nfcb_poll->attrib_res_len);
if (nfcb_poll->attrib_res_len > 0) {
memcpy(nfcb_poll->attrib_res,
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 03c31db38f1..99bc6f7faa7 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -634,6 +634,15 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
if (!dev)
return -ENODEV;
+ device_lock(&dev->dev);
+
+ if (!dev->polling) {
+ device_unlock(&dev->dev);
+ return -EINVAL;
+ }
+
+ device_unlock(&dev->dev);
+
mutex_lock(&dev->genl_data.genl_data_mutex);
if (dev->genl_data.poll_req_pid != info->snd_pid) {
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index ec1134c9e07..8b8a6a2b2ba 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -54,7 +54,10 @@ static int rawsock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
- pr_debug("sock=%p\n", sock);
+ pr_debug("sock=%p sk=%p\n", sock, sk);
+
+ if (!sk)
+ return 0;
sock_orphan(sk);
sock_put(sk);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-22 18:39:00 +0000