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NFC: NCI: Fix skb->dev usage 

skb->dev is used for carrying a net_device pointer and not
an nci_dev pointer.

Remove usage of skb-dev to carry nci_dev and replace it by parameter
in nci_recv_frame(), nci_send_frame() and driver send() functions.

NfcWilink driver is also updated to use those functions.

Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Frederic Danis 2013-05-22 11:36:17 +02:00 committed by Samuel Ortiz
parent 4674d0fecb
commit 1095e69f47
4 changed files with 13 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/nfc/nfcwilink.c
View File

@ -109,7 +109,7 @@ enum {
NFCWILINK_FW_DOWNLOAD,
};
static int nfcwilink_send(struct sk_buff *skb);
static int nfcwilink_send(struct nci_dev *ndev, struct sk_buff *skb);
static inline struct sk_buff *nfcwilink_skb_alloc(unsigned int len, gfp_t how)
{
@ -156,8 +156,6 @@ static int nfcwilink_get_bts_file_name(struct nfcwilink *drv, char *file_name)
return -ENOMEM;
}
skb->dev = (void *)drv->ndev;
cmd = (struct nci_vs_nfcc_info_cmd *)
skb_put(skb, sizeof(struct nci_vs_nfcc_info_cmd));
cmd->gid = NCI_VS_NFCC_INFO_CMD_GID;
@ -166,7 +164,7 @@ static int nfcwilink_get_bts_file_name(struct nfcwilink *drv, char *file_name)
drv->nfcc_info.plen = 0;
rc = nfcwilink_send(skb);
rc = nfcwilink_send(drv->ndev, skb);
if (rc)
return rc;
@ -232,11 +230,9 @@ static int nfcwilink_send_bts_cmd(struct nfcwilink *drv, __u8 *data, int len)
return -ENOMEM;
}
skb->dev = (void *)drv->ndev;
memcpy(skb_put(skb, len), data, len);
rc = nfcwilink_send(skb);
rc = nfcwilink_send(drv->ndev, skb);
if (rc)
return rc;
@ -371,10 +367,8 @@ static long nfcwilink_receive(void *priv_data, struct sk_buff *skb)
return 0;
}
skb->dev = (void *) drv->ndev;
/* Forward skb to NCI core layer */
rc = nci_recv_frame(skb);
rc = nci_recv_frame(drv->ndev, skb);
if (rc < 0) {
nfc_dev_err(&drv->pdev->dev, "nci_recv_frame failed %d", rc);
return rc;
@ -480,9 +474,8 @@ static int nfcwilink_close(struct nci_dev *ndev)
return rc;
}
static int nfcwilink_send(struct sk_buff *skb)
static int nfcwilink_send(struct nci_dev *ndev, struct sk_buff *skb)
{
struct nci_dev *ndev = (struct nci_dev *)skb->dev;
struct nfcwilink *drv = nci_get_drvdata(ndev);
struct nfcwilink_hdr hdr = {NFCWILINK_CHNL, NFCWILINK_OPCODE, 0x0000};
long len;

4
include/net/nfc/nci_core.h
View File

@ -66,7 +66,7 @@ struct nci_dev;
struct nci_ops {
int (*open)(struct nci_dev *ndev);
int (*close)(struct nci_dev *ndev);
int (*send)(struct sk_buff *skb);
int (*send)(struct nci_dev *ndev, struct sk_buff *skb);
};
#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
@ -153,7 +153,7 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
void nci_free_device(struct nci_dev *ndev);
int nci_register_device(struct nci_dev *ndev);
void nci_unregister_device(struct nci_dev *ndev);
int nci_recv_frame(struct sk_buff *skb);
int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev,
unsigned int len,

17
net/nfc/nci/core.c
View File

@ -797,12 +797,11 @@ EXPORT_SYMBOL(nci_unregister_device);
/**
* nci_recv_frame - receive frame from NCI drivers
*
* @ndev: The nci device
* @skb: The sk_buff to receive
*/
int nci_recv_frame(struct sk_buff *skb)
int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
{
struct nci_dev *ndev = (struct nci_dev *) skb->dev;
pr_debug("len %d\n", skb->len);
if (!ndev || (!test_bit(NCI_UP, &ndev->flags) &&
@ -819,10 +818,8 @@ int nci_recv_frame(struct sk_buff *skb)
}
EXPORT_SYMBOL(nci_recv_frame);
static int nci_send_frame(struct sk_buff *skb)
static int nci_send_frame(struct nci_dev *ndev, struct sk_buff *skb)
{
struct nci_dev *ndev = (struct nci_dev *) skb->dev;
pr_debug("len %d\n", skb->len);
if (!ndev) {
@ -833,7 +830,7 @@ static int nci_send_frame(struct sk_buff *skb)
/* Get rid of skb owner, prior to sending to the driver. */
skb_orphan(skb);
return ndev->ops->send(skb);
return ndev->ops->send(ndev, skb);
}
/* Send NCI command */
@ -861,8 +858,6 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
if (plen)
memcpy(skb_put(skb, plen), payload, plen);
skb->dev = (void *) ndev;
skb_queue_tail(&ndev->cmd_q, skb);
queue_work(ndev->cmd_wq, &ndev->cmd_work);
@ -894,7 +889,7 @@ static void nci_tx_work(struct work_struct *work)
nci_conn_id(skb->data),
nci_plen(skb->data));
nci_send_frame(skb);
nci_send_frame(ndev, skb);
mod_timer(&ndev->data_timer,
jiffies + msecs_to_jiffies(NCI_DATA_TIMEOUT));
@ -963,7 +958,7 @@ static void nci_cmd_work(struct work_struct *work)
nci_opcode_oid(nci_opcode(skb->data)),
nci_plen(skb->data));
nci_send_frame(skb);
nci_send_frame(ndev, skb);
mod_timer(&ndev->cmd_timer,
jiffies + msecs_to_jiffies(NCI_CMD_TIMEOUT));

2
net/nfc/nci/data.c
View File

@ -80,8 +80,6 @@ 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,