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Diffstat (limited to 'net/nfc/nci/data.c')
-rw-r--r--net/nfc/nci/data.c80
1 files changed, 42 insertions, 38 deletions
diff --git a/net/nfc/nci/data.c b/net/nfc/nci/data.c
index e5ed90fc1a9..6c3aef85287 100644
--- a/net/nfc/nci/data.c
+++ b/net/nfc/nci/data.c
@@ -16,11 +16,12 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
+
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
@@ -33,23 +34,26 @@
#include <linux/nfc.h>
/* Complete data exchange transaction and forward skb to nfc core */
-void nci_data_exchange_complete(struct nci_dev *ndev,
- struct sk_buff *skb,
+void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
int err)
{
data_exchange_cb_t cb = ndev->data_exchange_cb;
void *cb_context = ndev->data_exchange_cb_context;
- nfc_dbg("entry, len %d, err %d", ((skb) ? (skb->len) : (0)), err);
+ pr_debug("len %d, err %d\n", skb ? skb->len : 0, err);
+
+ /* data exchange is complete, stop the data timer */
+ del_timer_sync(&ndev->data_timer);
+ clear_bit(NCI_DATA_EXCHANGE_TO, &ndev->flags);
if (cb) {
ndev->data_exchange_cb = NULL;
- ndev->data_exchange_cb_context = 0;
+ ndev->data_exchange_cb_context = NULL;
/* forward skb to nfc core */
cb(cb_context, skb, err);
} else if (skb) {
- nfc_err("no rx callback, dropping rx data...");
+ pr_err("no rx callback, dropping rx data...\n");
/* no waiting callback, free skb */
kfree_skb(skb);
@@ -61,9 +65,9 @@ void nci_data_exchange_complete(struct nci_dev *ndev,
/* ----------------- NCI TX Data ----------------- */
static inline void nci_push_data_hdr(struct nci_dev *ndev,
- __u8 conn_id,
- struct sk_buff *skb,
- __u8 pbf)
+ __u8 conn_id,
+ struct sk_buff *skb,
+ __u8 pbf)
{
struct nci_data_hdr *hdr;
int plen = skb->len;
@@ -75,13 +79,11 @@ static inline void nci_push_data_hdr(struct nci_dev *ndev,
nci_mt_set((__u8 *)hdr, NCI_MT_DATA_PKT);
nci_pbf_set((__u8 *)hdr, pbf);
-
- skb->dev = (void *) ndev;
}
static int nci_queue_tx_data_frags(struct nci_dev *ndev,
- __u8 conn_id,
- struct sk_buff *skb) {
+ __u8 conn_id,
+ struct sk_buff *skb) {
int total_len = skb->len;
unsigned char *data = skb->data;
unsigned long flags;
@@ -90,16 +92,17 @@ static int nci_queue_tx_data_frags(struct nci_dev *ndev,
int frag_len;
int rc = 0;
- nfc_dbg("entry, conn_id 0x%x, total_len %d", conn_id, total_len);
+ pr_debug("conn_id 0x%x, total_len %d\n", conn_id, total_len);
__skb_queue_head_init(&frags_q);
while (total_len) {
- frag_len = min_t(int, total_len, ndev->max_pkt_payload_size);
+ frag_len =
+ min_t(int, total_len, ndev->max_data_pkt_payload_size);
skb_frag = nci_skb_alloc(ndev,
- (NCI_DATA_HDR_SIZE + frag_len),
- GFP_KERNEL);
+ (NCI_DATA_HDR_SIZE + frag_len),
+ GFP_KERNEL);
if (skb_frag == NULL) {
rc = -ENOMEM;
goto free_exit;
@@ -111,15 +114,16 @@ static int nci_queue_tx_data_frags(struct nci_dev *ndev,
/* second, set the header */
nci_push_data_hdr(ndev, conn_id, skb_frag,
- ((total_len == frag_len) ? (NCI_PBF_LAST) : (NCI_PBF_CONT)));
+ ((total_len == frag_len) ?
+ (NCI_PBF_LAST) : (NCI_PBF_CONT)));
__skb_queue_tail(&frags_q, skb_frag);
data += frag_len;
total_len -= frag_len;
- nfc_dbg("frag_len %d, remaining total_len %d",
- frag_len, total_len);
+ pr_debug("frag_len %d, remaining total_len %d\n",
+ frag_len, total_len);
}
/* queue all fragments atomically */
@@ -148,10 +152,10 @@ int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb)
{
int rc = 0;
- nfc_dbg("entry, conn_id 0x%x, plen %d", conn_id, skb->len);
+ pr_debug("conn_id 0x%x, plen %d\n", conn_id, skb->len);
/* check if the packet need to be fragmented */
- if (skb->len <= ndev->max_pkt_payload_size) {
+ if (skb->len <= ndev->max_data_pkt_payload_size) {
/* no need to fragment packet */
nci_push_data_hdr(ndev, conn_id, skb, NCI_PBF_LAST);
@@ -160,7 +164,7 @@ int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb)
/* fragment packet and queue the fragments */
rc = nci_queue_tx_data_frags(ndev, conn_id, skb);
if (rc) {
- nfc_err("failed to fragment tx data packet");
+ pr_err("failed to fragment tx data packet\n");
goto free_exit;
}
}
@@ -179,8 +183,8 @@ exit:
/* ----------------- NCI RX Data ----------------- */
static void nci_add_rx_data_frag(struct nci_dev *ndev,
- struct sk_buff *skb,
- __u8 pbf)
+ struct sk_buff *skb,
+ __u8 pbf)
{
int reassembly_len;
int err = 0;
@@ -190,13 +194,13 @@ static void nci_add_rx_data_frag(struct nci_dev *ndev,
/* first, make enough room for the already accumulated data */
if (skb_cow_head(skb, reassembly_len)) {
- nfc_err("error adding room for accumulated rx data");
+ pr_err("error adding room for accumulated rx data\n");
kfree_skb(skb);
- skb = 0;
+ skb = NULL;
kfree_skb(ndev->rx_data_reassembly);
- ndev->rx_data_reassembly = 0;
+ ndev->rx_data_reassembly = NULL;
err = -ENOMEM;
goto exit;
@@ -204,12 +208,12 @@ static void nci_add_rx_data_frag(struct nci_dev *ndev,
/* second, combine the two fragments */
memcpy(skb_push(skb, reassembly_len),
- ndev->rx_data_reassembly->data,
- reassembly_len);
+ ndev->rx_data_reassembly->data,
+ reassembly_len);
/* third, free old reassembly */
kfree_skb(ndev->rx_data_reassembly);
- ndev->rx_data_reassembly = 0;
+ ndev->rx_data_reassembly = NULL;
}
if (pbf == NCI_PBF_CONT) {
@@ -227,19 +231,19 @@ void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u8 pbf = nci_pbf(skb->data);
- nfc_dbg("entry, len %d", skb->len);
+ pr_debug("len %d\n", skb->len);
- nfc_dbg("NCI RX: MT=data, PBF=%d, conn_id=%d, plen=%d",
- nci_pbf(skb->data),
- nci_conn_id(skb->data),
- nci_plen(skb->data));
+ pr_debug("NCI RX: MT=data, PBF=%d, conn_id=%d, plen=%d\n",
+ nci_pbf(skb->data),
+ nci_conn_id(skb->data),
+ nci_plen(skb->data));
/* strip the nci data header */
skb_pull(skb, NCI_DATA_HDR_SIZE);
if (ndev->target_active_prot == NFC_PROTO_MIFARE) {
/* frame I/F => remove the status byte */
- nfc_dbg("NFC_PROTO_MIFARE => remove the status byte");
+ pr_debug("NFC_PROTO_MIFARE => remove the status byte\n");
skb_trim(skb, (skb->len - 1));
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-14 05:49:24 +0000