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Message-Id: <20170616122924.3557-7-johannes@sipsolutions.net>
Date: Fri, 16 Jun 2017 14:29:24 +0200
From: Johannes Berg <johannes@...solutions.net>
To: netdev@...r.kernel.org
Cc: Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH v2 6/6] networking: add and use skb_put_u8()
From: Johannes Berg <johannes.berg@...el.com>
Joe and Bjørn suggested that it'd be nicer to not have the
cast in the fairly common case of doing
*(u8 *)skb_put(skb, 1) = c;
Add skb_put_u8() for this case, and use it across the code,
using the following spatch:
@@
expression SKB, C, S;
typedef u8;
identifier fn = {skb_put};
fresh identifier fn2 = fn ## "_u8";
@@
- *(u8 *)fn(SKB, S) = C;
+ fn2(SKB, C);
Note that due to the "S", the spatch isn't perfect, it should
have checked that S is 1, but there's also places that use a
sizeof expression like sizeof(var) or sizeof(u8) etc. Turns
out that nobody ever did something like
*(u8 *)skb_put(skb, 2) = c;
which would be wrong anyway since the second byte wouldn't be
initialized.
Suggested-by: Joe Perches <joe@...ches.com>
Suggested-by: Bjørn Mork <bjorn@...k.no>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
---
drivers/bluetooth/bluecard_cs.c | 2 +-
drivers/bluetooth/bt3c_cs.c | 2 +-
drivers/bluetooth/btuart_cs.c | 2 +-
drivers/bluetooth/btusb.c | 6 +++---
drivers/bluetooth/dtl1_cs.c | 4 ++--
drivers/bluetooth/hci_bcm.c | 6 +++---
drivers/bluetooth/hci_intel.c | 2 +-
drivers/bluetooth/hci_nokia.c | 2 +-
drivers/bluetooth/hci_qca.c | 2 +-
drivers/bluetooth/hci_vhci.c | 4 ++--
drivers/isdn/capi/capi.c | 4 ++--
drivers/isdn/gigaset/asyncdata.c | 22 +++++++++++-----------
drivers/isdn/i4l/isdn_bsdcomp.c | 7 ++++---
drivers/isdn/i4l/isdn_x25iface.c | 4 ++--
drivers/net/hamradio/scc.c | 4 ++--
drivers/net/usb/cdc_ncm.c | 2 +-
drivers/net/usb/net1080.c | 2 +-
drivers/net/usb/zaurus.c | 8 ++++----
drivers/nfc/fdp/i2c.c | 2 +-
drivers/nfc/microread/i2c.c | 4 ++--
drivers/nfc/microread/microread.c | 4 ++--
drivers/nfc/nfcmrvl/fw_dnld.c | 4 ++--
drivers/nfc/pn533/pn533.c | 32 ++++++++++++++++----------------
drivers/nfc/pn544/i2c.c | 6 +++---
drivers/nfc/port100.c | 4 ++--
drivers/nfc/st21nfca/i2c.c | 6 +++---
drivers/nfc/st95hf/core.c | 2 +-
include/linux/skbuff.h | 5 +++++
net/bluetooth/hci_sock.c | 2 +-
net/bluetooth/hidp/core.c | 2 +-
net/decnet/dn_nsp_out.c | 12 ++++++------
net/nfc/digital_core.c | 4 ++--
net/nfc/digital_dep.c | 2 +-
net/nfc/digital_technology.c | 12 ++++++------
net/nfc/hci/core.c | 2 +-
net/nfc/hci/llc_shdlc.c | 4 ++--
net/nfc/nci/hci.c | 2 +-
net/nfc/nci/spi.c | 8 ++++----
net/nfc/nci/uart.c | 2 +-
39 files changed, 106 insertions(+), 100 deletions(-)
diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
index 39a05b0c8998..d4b0b655dde6 100644
--- a/drivers/bluetooth/bluecard_cs.c
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -448,7 +448,7 @@ static void bluecard_receive(struct bluecard_info *info,
} else {
- *(u8 *)skb_put(info->rx_skb, 1) = buf[i];
+ skb_put_u8(info->rx_skb, buf[i]);
info->rx_count--;
if (info->rx_count == 0) {
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
index be2d431aa366..32dcac017395 100644
--- a/drivers/bluetooth/bt3c_cs.c
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -282,7 +282,7 @@ static void bt3c_receive(struct bt3c_info *info)
__u8 x = inb(iobase + DATA_L);
- *(u8 *)skb_put(info->rx_skb, 1) = x;
+ skb_put_u8(info->rx_skb, x);
inb(iobase + DATA_H);
info->rx_count--;
diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
index 80b64e9684a3..7df79bb12350 100644
--- a/drivers/bluetooth/btuart_cs.c
+++ b/drivers/bluetooth/btuart_cs.c
@@ -233,7 +233,7 @@ static void btuart_receive(struct btuart_info *info)
} else {
- *(u8 *)skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+ skb_put_u8(info->rx_skb, inb(iobase + UART_RX));
info->rx_count--;
if (info->rx_count == 0) {
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index ba207c787605..fa24d693af24 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1844,7 +1844,7 @@ static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
evt->ncmd = 0x01;
evt->opcode = cpu_to_le16(opcode);
- *(u8 *)skb_put(skb, 1) = 0x00;
+ skb_put_u8(skb, 0x00);
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
@@ -2767,8 +2767,8 @@ static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
return ERR_PTR(-ENOMEM);
}
- *(u8 *)skb_put(skb, 1) = 0xf0;
- *(u8 *)skb_put(skb, 1) = enable;
+ skb_put_u8(skb, 0xf0);
+ skb_put_u8(skb, enable);
pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
index 6c5a3aa566a4..2adfe4fade76 100644
--- a/drivers/bluetooth/dtl1_cs.c
+++ b/drivers/bluetooth/dtl1_cs.c
@@ -226,7 +226,7 @@ static void dtl1_receive(struct dtl1_info *info)
}
}
- *(u8 *)skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+ skb_put_u8(info->rx_skb, inb(iobase + UART_RX));
nsh = (struct nsh *)info->rx_skb->data;
info->rx_count--;
@@ -414,7 +414,7 @@ static int dtl1_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
skb_reserve(s, NSHL);
skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
if (skb->len & 0x0001)
- *(u8 *)skb_put(s, 1) = 0; /* PAD */
+ skb_put_u8(s, 0); /* PAD */
/* Prepend skb with Nokia frame header and queue */
memcpy(skb_push(s, NSHL), &nsh, NSHL);
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index c1c4048ee37d..d2e9e2d1b014 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -262,9 +262,9 @@ static int bcm_set_diag(struct hci_dev *hdev, bool enable)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = BCM_LM_DIAG_PKT;
- *(u8 *)skb_put(skb, 1) = 0xf0;
- *(u8 *)skb_put(skb, 1) = enable;
+ skb_put_u8(skb, BCM_LM_DIAG_PKT);
+ skb_put_u8(skb, 0xf0);
+ skb_put_u8(skb, enable);
skb_queue_tail(&bcm->txq, skb);
hci_uart_tx_wakeup(hu);
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index ee97c465e32e..aad07e40ea4f 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -470,7 +470,7 @@ static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
evt->ncmd = 0x01;
evt->opcode = cpu_to_le16(opcode);
- *(u8 *)skb_put(skb, 1) = 0x00;
+ skb_put_u8(skb, 0x00);
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
diff --git a/drivers/bluetooth/hci_nokia.c b/drivers/bluetooth/hci_nokia.c
index 072a77a61e67..181a15b549e5 100644
--- a/drivers/bluetooth/hci_nokia.c
+++ b/drivers/bluetooth/hci_nokia.c
@@ -532,7 +532,7 @@ static int nokia_enqueue(struct hci_uart *hu, struct sk_buff *skb)
err = skb_pad(skb, 1);
if (err)
return err;
- *(u8 *)skb_put(skb, 1) = 0x00;
+ skb_put_u8(skb, 0x00);
}
skb_queue_tail(&btdev->txq, skb);
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index e2c88515340a..392f412b4575 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -215,7 +215,7 @@ static int send_hci_ibs_cmd(u8 cmd, struct hci_uart *hu)
}
/* Assign HCI_IBS type */
- *(u8 *)skb_put(skb, 1) = cmd;
+ skb_put_u8(skb, cmd);
skb_queue_tail(&qca->txq, skb);
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index 1ef9c427a2d8..e6f6dbc04131 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -146,8 +146,8 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
- *(u8 *)skb_put(skb, 1) = 0xff;
- *(u8 *)skb_put(skb, 1) = opcode;
+ skb_put_u8(skb, 0xff);
+ skb_put_u8(skb, opcode);
put_unaligned_le16(hdev->id, skb_put(skb, 2));
skb_queue_tail(&data->readq, skb);
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 96f586d34d2d..dde8f46bc254 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1082,7 +1082,7 @@ static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
skb = mp->outskb;
if (skb) {
if (skb_tailroom(skb) > 0) {
- *(u8 *)skb_put(skb, 1) = ch;
+ skb_put_u8(skb, ch);
goto unlock_out;
}
mp->outskb = NULL;
@@ -1094,7 +1094,7 @@ static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + CAPI_MAX_BLKSIZE, GFP_ATOMIC);
if (skb) {
skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
- *(u8 *)skb_put(skb, 1) = ch;
+ skb_put_u8(skb, ch);
mp->outskb = skb;
} else {
printk(KERN_ERR "capinc_put_char: char %u lost\n", ch);
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c
index 03ac9fbfe318..4caecdcc6f29 100644
--- a/drivers/isdn/gigaset/asyncdata.c
+++ b/drivers/isdn/gigaset/asyncdata.c
@@ -492,33 +492,33 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb)
hdlc_skb->mac_len = skb->mac_len;
/* Add flag sequence in front of everything.. */
- *(u8 *)skb_put(hdlc_skb, 1) = PPP_FLAG;
+ skb_put_u8(hdlc_skb, PPP_FLAG);
/* Perform byte stuffing while copying data. */
while (skb->len--) {
if (muststuff(*skb->data)) {
- *(u8 *)skb_put(hdlc_skb, 1) = PPP_ESCAPE;
- *(u8 *)skb_put(hdlc_skb, 1) = (*skb->data++) ^ PPP_TRANS;
+ skb_put_u8(hdlc_skb, PPP_ESCAPE);
+ skb_put_u8(hdlc_skb, (*skb->data++) ^ PPP_TRANS);
} else
- *(u8 *)skb_put(hdlc_skb, 1) = *skb->data++;
+ skb_put_u8(hdlc_skb, *skb->data++);
}
/* Finally add FCS (byte stuffed) and flag sequence */
c = (fcs & 0x00ff); /* least significant byte first */
if (muststuff(c)) {
- *(u8 *)skb_put(hdlc_skb, 1) = PPP_ESCAPE;
+ skb_put_u8(hdlc_skb, PPP_ESCAPE);
c ^= PPP_TRANS;
}
- *(u8 *)skb_put(hdlc_skb, 1) = c;
+ skb_put_u8(hdlc_skb, c);
c = ((fcs >> 8) & 0x00ff);
if (muststuff(c)) {
- *(u8 *)skb_put(hdlc_skb, 1) = PPP_ESCAPE;
+ skb_put_u8(hdlc_skb, PPP_ESCAPE);
c ^= PPP_TRANS;
}
- *(u8 *)skb_put(hdlc_skb, 1) = c;
+ skb_put_u8(hdlc_skb, c);
- *(u8 *)skb_put(hdlc_skb, 1) = PPP_FLAG;
+ skb_put_u8(hdlc_skb, PPP_FLAG);
dev_kfree_skb_any(skb);
return hdlc_skb;
@@ -561,8 +561,8 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb)
while (len--) {
c = bitrev8(*cp++);
if (c == DLE_FLAG)
- *(u8 *)skb_put(iraw_skb, 1) = c;
- *(u8 *)skb_put(iraw_skb, 1) = c;
+ skb_put_u8(iraw_skb, c);
+ skb_put_u8(iraw_skb, c);
}
dev_kfree_skb_any(skb);
return iraw_skb;
diff --git a/drivers/isdn/i4l/isdn_bsdcomp.c b/drivers/isdn/i4l/isdn_bsdcomp.c
index 6ade0916da4e..3035210a6119 100644
--- a/drivers/isdn/i4l/isdn_bsdcomp.c
+++ b/drivers/isdn/i4l/isdn_bsdcomp.c
@@ -602,7 +602,8 @@ static int bsd_compress(void *state, struct sk_buff *skb_in, struct sk_buff *skb
* Do not emit a completely useless byte of ones.
*/
if (bitno < 32 && skb_out && skb_tailroom(skb_out) > 0)
- *(u8 *)skb_put(skb_out, 1) = (unsigned char)((accm | (0xff << (bitno - 8))) >> 24);
+ skb_put_u8(skb_out,
+ (unsigned char)((accm | (0xff << (bitno - 8))) >> 24));
/*
* Increase code size if we would have without the packet
@@ -698,7 +699,7 @@ static int bsd_decompress(void *state, struct sk_buff *skb_in, struct sk_buff *s
db->bytes_out += ilen;
if (skb_tailroom(skb_out) > 0)
- *(u8 *)skb_put(skb_out, 1) = 0;
+ skb_put_u8(skb_out, 0);
else
return DECOMP_ERR_NOMEM;
@@ -816,7 +817,7 @@ static int bsd_decompress(void *state, struct sk_buff *skb_in, struct sk_buff *s
#endif
if (extra) /* the KwKwK case again */
- *(u8 *)skb_put(skb_out, 1) = finchar;
+ skb_put_u8(skb_out, finchar);
/*
* If not first code in a packet, and
diff --git a/drivers/isdn/i4l/isdn_x25iface.c b/drivers/isdn/i4l/isdn_x25iface.c
index e33fa3073f74..48bfbcb4a09d 100644
--- a/drivers/isdn/i4l/isdn_x25iface.c
+++ b/drivers/isdn/i4l/isdn_x25iface.c
@@ -224,7 +224,7 @@ static int isdn_x25iface_connect_ind(struct concap_proto *cprot)
skb = dev_alloc_skb(1);
if (skb) {
- *(u8 *)skb_put(skb, 1) = X25_IFACE_CONNECT;
+ skb_put_u8(skb, X25_IFACE_CONNECT);
skb->protocol = x25_type_trans(skb, cprot->net_dev);
netif_rx(skb);
return 0;
@@ -253,7 +253,7 @@ static int isdn_x25iface_disconn_ind(struct concap_proto *cprot)
*state_p = WAN_DISCONNECTED;
skb = dev_alloc_skb(1);
if (skb) {
- *(u8 *)skb_put(skb, 1) = X25_IFACE_DISCONNECT;
+ skb_put_u8(skb, X25_IFACE_DISCONNECT);
skb->protocol = x25_type_trans(skb, cprot->net_dev);
netif_rx(skb);
return 0;
diff --git a/drivers/net/hamradio/scc.c b/drivers/net/hamradio/scc.c
index 140a209f22ab..295f267b73ea 100644
--- a/drivers/net/hamradio/scc.c
+++ b/drivers/net/hamradio/scc.c
@@ -540,7 +540,7 @@ static inline void scc_rxint(struct scc_channel *scc)
}
scc->rx_buff = skb;
- *(u8 *)skb_put(skb, 1) = 0; /* KISS data */
+ skb_put_u8(skb, 0); /* KISS data */
}
if (skb->len >= scc->stat.bufsize)
@@ -555,7 +555,7 @@ static inline void scc_rxint(struct scc_channel *scc)
return;
}
- *(u8 *)skb_put(skb, 1) = Inb(scc->data);
+ skb_put_u8(skb, Inb(scc->data));
}
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 4d4837a0645b..bcb974707118 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -1250,7 +1250,7 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign)
skb_put_zero(skb_out, padding_count);
} else if (skb_out->len < ctx->tx_max &&
(skb_out->len % dev->maxpacket) == 0) {
- *(u8 *)skb_put(skb_out, 1) = 0; /* force short packet */
+ skb_put_u8(skb_out, 0); /* force short packet */
}
/* set final frame length */
diff --git a/drivers/net/usb/net1080.c b/drivers/net/usb/net1080.c
index be53ff30b7b5..18a13aa5fcbb 100644
--- a/drivers/net/usb/net1080.c
+++ b/drivers/net/usb/net1080.c
@@ -473,7 +473,7 @@ net1080_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
/* maybe pad; then trailer */
if (!((skb->len + sizeof *trailer) & 0x01))
- *(u8 *)skb_put(skb, 1) = PAD_BYTE;
+ skb_put_u8(skb, PAD_BYTE);
trailer = skb_put(skb, sizeof *trailer);
put_unaligned(header->packet_id, &trailer->packet_id);
#if 0
diff --git a/drivers/net/usb/zaurus.c b/drivers/net/usb/zaurus.c
index dc3cd03763af..9c2196c3fd11 100644
--- a/drivers/net/usb/zaurus.c
+++ b/drivers/net/usb/zaurus.c
@@ -74,10 +74,10 @@ zaurus_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
fcs = crc32_le(~0, skb->data, skb->len);
fcs = ~fcs;
- *(u8 *)skb_put(skb, 1) = fcs & 0xff;
- *(u8 *)skb_put(skb, 1) = (fcs>> 8) & 0xff;
- *(u8 *)skb_put(skb, 1) = (fcs>>16) & 0xff;
- *(u8 *)skb_put(skb, 1) = (fcs>>24) & 0xff;
+ skb_put_u8(skb, fcs & 0xff);
+ skb_put_u8(skb, (fcs >> 8) & 0xff);
+ skb_put_u8(skb, (fcs >> 16) & 0xff);
+ skb_put_u8(skb, (fcs >> 24) & 0xff);
}
return skb;
}
diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
index d5781aa0f791..e0baec848ff2 100644
--- a/drivers/nfc/fdp/i2c.c
+++ b/drivers/nfc/fdp/i2c.c
@@ -86,7 +86,7 @@ static void fdp_nci_i2c_add_len_lrc(struct sk_buff *skb)
for (i = 0; i < len + 2; i++)
lrc ^= skb->data[i];
- *(u8 *)skb_put(skb, 1) = lrc;
+ skb_put_u8(skb, lrc);
}
static void fdp_nci_i2c_remove_len_lrc(struct sk_buff *skb)
diff --git a/drivers/nfc/microread/i2c.c b/drivers/nfc/microread/i2c.c
index 386cc61d95b9..b668b7b9a61e 100644
--- a/drivers/nfc/microread/i2c.c
+++ b/drivers/nfc/microread/i2c.c
@@ -75,7 +75,7 @@ static void microread_i2c_add_len_crc(struct sk_buff *skb)
for (i = 0; i < skb->len; i++)
crc = crc ^ skb->data[i];
- *(u8 *)skb_put(skb, 1) = crc;
+ skb_put_u8(skb, crc);
}
static void microread_i2c_remove_len_crc(struct sk_buff *skb)
@@ -173,7 +173,7 @@ static int microread_i2c_read(struct microread_i2c_phy *phy,
goto flush;
}
- *(u8 *)skb_put(*skb, 1) = len;
+ skb_put_u8(*skb, len);
r = i2c_master_recv(client, skb_put(*skb, len), len);
if (r != len) {
diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
index 38a979eacc29..e5d5d2d97409 100644
--- a/drivers/nfc/microread/microread.c
+++ b/drivers/nfc/microread/microread.c
@@ -441,8 +441,8 @@ static int microread_im_transceive(struct nfc_hci_dev *hdev,
crc = crc_ccitt(0xffff, skb->data, skb->len);
crc = ~crc;
- *(u8 *)skb_put(skb, 1) = crc & 0xff;
- *(u8 *)skb_put(skb, 1) = crc >> 8;
+ skb_put_u8(skb, crc & 0xff);
+ skb_put_u8(skb, crc >> 8);
break;
case MICROREAD_GATE_ID_MREAD_NFC_T3:
control_bits = 0xDB;
diff --git a/drivers/nfc/nfcmrvl/fw_dnld.c b/drivers/nfc/nfcmrvl/fw_dnld.c
index 788599de9d8a..f9f000c546d1 100644
--- a/drivers/nfc/nfcmrvl/fw_dnld.c
+++ b/drivers/nfc/nfcmrvl/fw_dnld.c
@@ -292,7 +292,7 @@ static int process_state_fw_dnld(struct nfcmrvl_private *priv,
out_skb = alloc_lc_skb(priv, 1);
if (!out_skb)
return -ENOMEM;
- *(u8 *)skb_put(out_skb, 1) = 0xBF;
+ skb_put_u8(out_skb, 0xBF);
nci_send_frame(priv->ndev, out_skb);
priv->fw_dnld.substate = SUBSTATE_WAIT_NACK_CREDIT;
return 0;
@@ -301,7 +301,7 @@ static int process_state_fw_dnld(struct nfcmrvl_private *priv,
out_skb = alloc_lc_skb(priv, 1);
if (!out_skb)
return -ENOMEM;
- *(u8 *)skb_put(out_skb, 1) = HELPER_ACK_PACKET_FORMAT;
+ skb_put_u8(out_skb, HELPER_ACK_PACKET_FORMAT);
nci_send_frame(priv->ndev, out_skb);
priv->fw_dnld.substate = SUBSTATE_WAIT_ACK_CREDIT;
break;
diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index 6a711b5b9490..c8a8f5badb5b 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -1032,7 +1032,7 @@ static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev)
return NULL;
/* DEP support only */
- *(u8 *)skb_put(skb, 1) = PN533_INIT_TARGET_DEP;
+ skb_put_u8(skb, PN533_INIT_TARGET_DEP);
/* MIFARE params */
skb_put_data(skb, mifare_params, 6);
@@ -1046,12 +1046,12 @@ static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev)
memcpy(nfcid3, felica, 8);
/* General bytes */
- *(u8 *)skb_put(skb, 1) = gbytes_len;
+ skb_put_u8(skb, gbytes_len);
gb = skb_put_data(skb, gbytes, gbytes_len);
/* Len Tk */
- *(u8 *)skb_put(skb, 1) = 0;
+ skb_put_u8(skb, 0);
return skb;
}
@@ -1280,8 +1280,8 @@ static void pn533_wq_rf(struct work_struct *work)
if (!skb)
return;
- *(u8 *)skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD;
- *(u8 *)skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD_AUTO_RFCA;
+ skb_put_u8(skb, PN533_CFGITEM_RF_FIELD);
+ skb_put_u8(skb, PN533_CFGITEM_RF_FIELD_AUTO_RFCA);
rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb,
pn533_rf_complete, NULL);
@@ -1375,8 +1375,8 @@ static int pn533_poll_dep(struct nfc_dev *nfc_dev)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = 0x01; /* Active */
- *(u8 *)skb_put(skb, 1) = 0x02; /* 424 kbps */
+ skb_put_u8(skb, 0x01); /* Active */
+ skb_put_u8(skb, 0x02); /* 424 kbps */
next = skb_put(skb, 1); /* Next */
*next = 0;
@@ -1620,8 +1620,8 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, sizeof(u8)) = 1; /* TG */
- *(u8 *)skb_put(skb, sizeof(u8)) = 0; /* Next */
+ skb_put_u8(skb, 1); /* TG */
+ skb_put_u8(skb, 0); /* Next */
resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
if (IS_ERR(resp))
@@ -1737,7 +1737,7 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
if (!skb)
return;
- *(u8 *)skb_put(skb, 1) = 1; /* TG*/
+ skb_put_u8(skb, 1); /* TG*/
rc = pn533_send_cmd_async(dev, PN533_CMD_IN_RELEASE, skb,
pn533_deactivate_target_complete, NULL);
@@ -1848,8 +1848,8 @@ static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = !comm_mode; /* ActPass */
- *(u8 *)skb_put(skb, 1) = 0x02; /* 424 kbps */
+ skb_put_u8(skb, !comm_mode); /* ActPass */
+ skb_put_u8(skb, 0x02); /* 424 kbps */
next = skb_put(skb, 1); /* Next */
*next = 0;
@@ -2274,7 +2274,7 @@ static void pn533_wq_mi_recv(struct work_struct *work)
break;
}
default:
- *(u8 *)skb_put(skb, sizeof(u8)) = 1; /*TG*/
+ skb_put_u8(skb, 1); /*TG*/
rc = pn533_send_cmd_direct_async(dev,
PN533_CMD_IN_DATA_EXCHANGE,
@@ -2370,7 +2370,7 @@ static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, sizeof(cfgitem)) = cfgitem;
+ skb_put_u8(skb, cfgitem);
skb_put_data(skb, cfgdata, cfgdata_len);
resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
@@ -2415,7 +2415,7 @@ static int pn533_pasori_fw_reset(struct pn533 *dev)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, sizeof(u8)) = 0x1;
+ skb_put_u8(skb, 0x1);
resp = pn533_send_cmd_sync(dev, 0x18, skb);
if (IS_ERR(resp))
@@ -2454,7 +2454,7 @@ static int pn532_sam_configuration(struct nfc_dev *nfc_dev)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = 0x01;
+ skb_put_u8(skb, 0x01);
resp = pn533_send_cmd_sync(dev, PN533_CMD_SAM_CONFIGURATION, skb);
if (IS_ERR(resp))
diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c
index b7be6c25b7e6..fedde9d46ab6 100644
--- a/drivers/nfc/pn544/i2c.c
+++ b/drivers/nfc/pn544/i2c.c
@@ -287,8 +287,8 @@ static void pn544_hci_i2c_add_len_crc(struct sk_buff *skb)
crc = crc_ccitt(0xffff, skb->data, skb->len);
crc = ~crc;
- *(u8 *)skb_put(skb, 1) = crc & 0xff;
- *(u8 *)skb_put(skb, 1) = crc >> 8;
+ skb_put_u8(skb, crc & 0xff);
+ skb_put_u8(skb, crc >> 8);
}
static void pn544_hci_i2c_remove_len_crc(struct sk_buff *skb)
@@ -391,7 +391,7 @@ static int pn544_hci_i2c_read(struct pn544_i2c_phy *phy, struct sk_buff **skb)
goto flush;
}
- *(u8 *)skb_put(*skb, 1) = len;
+ skb_put_u8(*skb, len);
r = i2c_master_recv(client, skb_put(*skb, len), len);
if (r != len) {
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 5fa3cf0fabd6..bb43cebda9dc 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -991,7 +991,7 @@ static int port100_set_command_type(struct port100 *dev, u8 command_type)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, sizeof(u8)) = command_type;
+ skb_put_u8(skb, command_type);
resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, skb);
if (IS_ERR(resp))
@@ -1059,7 +1059,7 @@ static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = on ? 1 : 0;
+ skb_put_u8(skb, on ? 1 : 0);
/* Cancel the last command if the device is being switched off */
if (!on)
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c
index 396cdafb3e36..4bff76baa341 100644
--- a/drivers/nfc/st21nfca/i2c.c
+++ b/drivers/nfc/st21nfca/i2c.c
@@ -177,10 +177,10 @@ static void st21nfca_hci_add_len_crc(struct sk_buff *skb)
crc = ~crc;
tmp = crc & 0x00ff;
- *(u8 *)skb_put(skb, 1) = tmp;
+ skb_put_u8(skb, tmp);
tmp = (crc >> 8) & 0x00ff;
- *(u8 *)skb_put(skb, 1) = tmp;
+ skb_put_u8(skb, tmp);
}
static void st21nfca_hci_remove_len_crc(struct sk_buff *skb)
@@ -214,7 +214,7 @@ static int st21nfca_hci_i2c_write(void *phy_id, struct sk_buff *skb)
st21nfca_hci_add_len_crc(skb);
/* add ST21NFCA_SOF_EOF on tail */
- *(u8 *)skb_put(skb, 1) = ST21NFCA_SOF_EOF;
+ skb_put_u8(skb, ST21NFCA_SOF_EOF);
/* add ST21NFCA_SOF_EOF on head */
*(u8 *)skb_push(skb, 1) = ST21NFCA_SOF_EOF;
diff --git a/drivers/nfc/st95hf/core.c b/drivers/nfc/st95hf/core.c
index 168adcc46cb8..2b26f762fbc3 100644
--- a/drivers/nfc/st95hf/core.c
+++ b/drivers/nfc/st95hf/core.c
@@ -949,7 +949,7 @@ static int st95hf_in_send_cmd(struct nfc_digital_dev *ddev,
switch (stcontext->current_rf_tech) {
case NFC_DIGITAL_RF_TECH_106A:
len_data_to_tag = skb->len + 1;
- *(u8 *)skb_put(skb, 1) = stcontext->sendrcv_trflag;
+ skb_put_u8(skb, stcontext->sendrcv_trflag);
break;
case NFC_DIGITAL_RF_TECH_106B:
case NFC_DIGITAL_RF_TECH_ISO15693:
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 46bd514e719c..852feacf4bbf 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1923,6 +1923,11 @@ static inline void *skb_put_data(struct sk_buff *skb, const void *data,
return tmp;
}
+static inline void skb_put_u8(struct sk_buff *skb, u8 val)
+{
+ *(u8 *)skb_put(skb, 1) = val;
+}
+
void *skb_push(struct sk_buff *skb, unsigned int len);
static inline void *__skb_push(struct sk_buff *skb, unsigned int len)
{
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index cdb5c1a7481e..65d734c165bd 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -517,7 +517,7 @@ static struct sk_buff *create_monitor_ctrl_open(struct sock *sk)
put_unaligned_le16(format, skb_put(skb, 2));
skb_put_data(skb, ver, sizeof(ver));
put_unaligned_le32(flags, skb_put(skb, 4));
- *(u8 *)skb_put(skb, 1) = TASK_COMM_LEN;
+ skb_put_u8(skb, TASK_COMM_LEN);
skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN);
__net_timestamp(skb);
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index c0d0832a023d..961f7f53e178 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -112,7 +112,7 @@ static int hidp_send_message(struct hidp_session *session, struct socket *sock,
return -ENOMEM;
}
- *(u8 *)skb_put(skb, 1) = hdr;
+ skb_put_u8(skb, hdr);
if (data && size > 0)
skb_put_data(skb, data, size);
diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index 7e054b2f270a..66f035e476ea 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -530,7 +530,7 @@ void dn_send_conn_conf(struct sock *sk, gfp_t gfp)
msg->info = scp->info_loc;
msg->segsize = cpu_to_le16(scp->segsize_loc);
- *(u8 *)skb_put(skb, 1) = len;
+ skb_put_u8(skb, len);
if (len > 0)
skb_put_data(skb, scp->conndata_out.opt_data, len);
@@ -686,25 +686,25 @@ void dn_nsp_send_conninit(struct sock *sk, unsigned char msgflg)
if (scp->peer.sdn_flags & SDF_UICPROXY)
menuver |= DN_MENUVER_UIC;
- *(u8 *)skb_put(skb, 1) = menuver; /* Menu Version */
+ skb_put_u8(skb, menuver); /* Menu Version */
aux = scp->accessdata.acc_userl;
- *(u8 *)skb_put(skb, 1) = aux;
+ skb_put_u8(skb, aux);
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_user, aux);
aux = scp->accessdata.acc_passl;
- *(u8 *)skb_put(skb, 1) = aux;
+ skb_put_u8(skb, aux);
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_pass, aux);
aux = scp->accessdata.acc_accl;
- *(u8 *)skb_put(skb, 1) = aux;
+ skb_put_u8(skb, aux);
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_acc, aux);
aux = (__u8)le16_to_cpu(scp->conndata_out.opt_optl);
- *(u8 *)skb_put(skb, 1) = aux;
+ skb_put_u8(skb, aux);
if (aux > 0)
skb_put_data(skb, scp->conndata_out.opt_data, aux);
diff --git a/net/nfc/digital_core.c b/net/nfc/digital_core.c
index fec47a7d0092..ebeace7a8278 100644
--- a/net/nfc/digital_core.c
+++ b/net/nfc/digital_core.c
@@ -74,8 +74,8 @@ void digital_skb_add_crc(struct sk_buff *skb, crc_func_t crc_func, u16 init,
if (msb_first)
crc = __fswab16(crc);
- *(u8 *)skb_put(skb, 1) = crc & 0xFF;
- *(u8 *)skb_put(skb, 1) = (crc >> 8) & 0xFF;
+ skb_put_u8(skb, crc & 0xFF);
+ skb_put_u8(skb, (crc >> 8) & 0xFF);
}
int digital_skb_check_crc(struct sk_buff *skb, crc_func_t crc_func,
diff --git a/net/nfc/digital_dep.c b/net/nfc/digital_dep.c
index f948fc2099d2..74ccc2dd79d0 100644
--- a/net/nfc/digital_dep.c
+++ b/net/nfc/digital_dep.c
@@ -654,7 +654,7 @@ static int digital_in_send_rtox(struct nfc_digital_dev *ddev,
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = rtox;
+ skb_put_u8(skb, rtox);
skb_push(skb, sizeof(struct digital_dep_req_res));
diff --git a/net/nfc/digital_technology.c b/net/nfc/digital_technology.c
index 492204e440ec..3cc3448da524 100644
--- a/net/nfc/digital_technology.c
+++ b/net/nfc/digital_technology.c
@@ -266,8 +266,8 @@ static int digital_in_send_rats(struct nfc_digital_dev *ddev,
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = DIGITAL_RATS_BYTE1;
- *(u8 *)skb_put(skb, 1) = DIGITAL_RATS_PARAM;
+ skb_put_u8(skb, DIGITAL_RATS_BYTE1);
+ skb_put_u8(skb, DIGITAL_RATS_PARAM);
rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_ats,
target);
@@ -470,8 +470,8 @@ static int digital_in_send_sdd_req(struct nfc_digital_dev *ddev,
else
sel_cmd = DIGITAL_CMD_SEL_REQ_CL3;
- *(u8 *)skb_put(skb, sizeof(u8)) = sel_cmd;
- *(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_SDD_REQ_SEL_PAR;
+ skb_put_u8(skb, sel_cmd);
+ skb_put_u8(skb, DIGITAL_SDD_REQ_SEL_PAR);
return digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sdd_res,
target);
@@ -541,7 +541,7 @@ int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, sizeof(u8)) = DIGITAL_CMD_SENS_REQ;
+ skb_put_u8(skb, DIGITAL_CMD_SENS_REQ);
rc = digital_in_send_cmd(ddev, skb, 30, digital_in_recv_sens_res, NULL);
if (rc)
@@ -937,7 +937,7 @@ static int digital_tg_send_sel_res(struct nfc_digital_dev *ddev)
if (!skb)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = DIGITAL_SEL_RES_NFC_DEP;
+ skb_put_u8(skb, DIGITAL_SEL_RES_NFC_DEP);
if (!DIGITAL_DRV_CAPS_TG_CRC(ddev))
digital_skb_add_crc_a(skb);
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index 7b2bdda1514c..b740fef0acc5 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -874,7 +874,7 @@ static void nfc_hci_recv_from_llc(struct nfc_hci_dev *hdev, struct sk_buff *skb)
return;
}
- *(u8 *)skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+ skb_put_u8(hcp_skb, pipe);
skb_queue_walk(&hdev->rx_hcp_frags, frag_skb) {
msg_len = frag_skb->len - NFC_HCI_HCP_PACKET_HEADER_LEN;
diff --git a/net/nfc/hci/llc_shdlc.c b/net/nfc/hci/llc_shdlc.c
index 5bd4529279f5..17e59a009ce6 100644
--- a/net/nfc/hci/llc_shdlc.c
+++ b/net/nfc/hci/llc_shdlc.c
@@ -382,8 +382,8 @@ static int llc_shdlc_connect_initiate(struct llc_shdlc *shdlc)
if (skb == NULL)
return -ENOMEM;
- *(u8 *)skb_put(skb, 1) = SHDLC_MAX_WINDOW;
- *(u8 *)skb_put(skb, 1) = SHDLC_SREJ_SUPPORT ? 1 : 0;
+ skb_put_u8(skb, SHDLC_MAX_WINDOW);
+ skb_put_u8(skb, SHDLC_SREJ_SUPPORT ? 1 : 0);
return llc_shdlc_send_u_frame(shdlc, skb, U_FRAME_RSET);
}
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index 3f93df58d9f1..ddfc52ac1f9b 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -472,7 +472,7 @@ void nci_hci_data_received_cb(void *context,
return;
}
- *(u8 *)skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+ skb_put_u8(hcp_skb, pipe);
skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c
index 3b4512731a2f..452f4c16b7a9 100644
--- a/net/nfc/nci/spi.c
+++ b/net/nfc/nci/spi.c
@@ -86,8 +86,8 @@ int nci_spi_send(struct nci_spi *nspi,
u16 crc;
crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
- *(u8 *)skb_put(skb, 1) = crc >> 8;
- *(u8 *)skb_put(skb, 1) = crc & 0xFF;
+ skb_put_u8(skb, crc >> 8);
+ skb_put_u8(skb, crc & 0xFF);
}
if (write_handshake_completion) {
@@ -172,8 +172,8 @@ static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)
hdr[3] = 0;
crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
- *(u8 *)skb_put(skb, 1) = crc >> 8;
- *(u8 *)skb_put(skb, 1) = crc & 0xFF;
+ skb_put_u8(skb, crc >> 8);
+ skb_put_u8(skb, crc & 0xFF);
ret = __nci_spi_send(nspi, skb, 0);
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index 442f8eadfc76..8d104c1db628 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -355,7 +355,7 @@ static int nci_uart_default_recv_buf(struct nci_uart *nu, const u8 *data,
/* Eat byte after byte till full packet header is received */
if (nu->rx_skb->len < NCI_CTRL_HDR_SIZE) {
- *(u8 *)skb_put(nu->rx_skb, 1) = *data++;
+ skb_put_u8(nu->rx_skb, *data++);
--count;
continue;
}
--
2.11.0
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