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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:21 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:39 +0300
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /net/bluetooth
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.xz
networking: make skb_put & friends return void pointers
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/hci_request.c2
-rw-r--r--net/bluetooth/hci_sock.c12
-rw-r--r--net/bluetooth/hidp/core.c2
-rw-r--r--net/bluetooth/l2cap_core.c14
-rw-r--r--net/bluetooth/mgmt_util.c10
-rw-r--r--net/bluetooth/rfcomm/core.c2
6 files changed, 21 insertions, 21 deletions
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 4e4105a932bd..b73ac149de34 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -299,7 +299,7 @@ struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, u32 plen,
if (!skb)
return NULL;
- hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE);
+ hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
hdr->opcode = cpu_to_le16(opcode);
hdr->plen = plen;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 083e87f26a0f..1301a8786d8d 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -410,7 +410,7 @@ static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
if (!skb)
return NULL;
- ni = (void *)skb_put(skb, HCI_MON_NEW_INDEX_SIZE);
+ ni = skb_put(skb, HCI_MON_NEW_INDEX_SIZE);
ni->type = hdev->dev_type;
ni->bus = hdev->bus;
bacpy(&ni->bdaddr, &hdev->bdaddr);
@@ -438,7 +438,7 @@ static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event)
if (!skb)
return NULL;
- ii = (void *)skb_put(skb, HCI_MON_INDEX_INFO_SIZE);
+ ii = skb_put(skb, HCI_MON_INDEX_INFO_SIZE);
bacpy(&ii->bdaddr, &hdev->bdaddr);
ii->manufacturer = cpu_to_le16(hdev->manufacturer);
@@ -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));
- *skb_put(skb, 1) = TASK_COMM_LEN;
+ *(u8 *)skb_put(skb, 1) = TASK_COMM_LEN;
skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN);
__net_timestamp(skb);
@@ -616,7 +616,7 @@ send_monitor_note(struct sock *sk, const char *fmt, ...)
va_start(args, fmt);
vsprintf(skb_put(skb, len), fmt, args);
- *skb_put(skb, 1) = 0;
+ *(u8 *)skb_put(skb, 1) = 0;
va_end(args);
__net_timestamp(skb);
@@ -703,11 +703,11 @@ static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data)
if (!skb)
return;
- hdr = (void *)skb_put(skb, HCI_EVENT_HDR_SIZE);
+ hdr = skb_put(skb, HCI_EVENT_HDR_SIZE);
hdr->evt = HCI_EV_STACK_INTERNAL;
hdr->plen = sizeof(*ev) + dlen;
- ev = (void *)skb_put(skb, sizeof(*ev) + dlen);
+ ev = skb_put(skb, sizeof(*ev) + dlen);
ev->type = type;
memcpy(ev->data, data, dlen);
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 9e83713262e8..c0d0832a023d 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;
}
- *skb_put(skb, 1) = hdr;
+ *(u8 *)skb_put(skb, 1) = hdr;
if (data && size > 0)
skb_put_data(skb, data, size);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index fe6a5529bdf5..303c779bfe38 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1048,7 +1048,7 @@ static struct sk_buff *l2cap_create_sframe_pdu(struct l2cap_chan *chan,
if (!skb)
return ERR_PTR(-ENOMEM);
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
@@ -2182,7 +2182,7 @@ static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan,
return skb;
/* Create L2CAP header */
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + L2CAP_PSMLEN_SIZE);
put_unaligned(chan->psm, (__le16 *) skb_put(skb, L2CAP_PSMLEN_SIZE));
@@ -2213,7 +2213,7 @@ static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan,
return skb;
/* Create L2CAP header */
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len);
@@ -2255,7 +2255,7 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan,
return skb;
/* Create L2CAP header */
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
@@ -2373,7 +2373,7 @@ static struct sk_buff *l2cap_create_le_flowctl_pdu(struct l2cap_chan *chan,
return skb;
/* Create L2CAP header */
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
@@ -2908,7 +2908,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code,
if (!skb)
return NULL;
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh = skb_put(skb, L2CAP_HDR_SIZE);
lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
if (conn->hcon->type == LE_LINK)
@@ -2916,7 +2916,7 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code,
else
lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
- cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
+ cmd = skb_put(skb, L2CAP_CMD_HDR_SIZE);
cmd->code = code;
cmd->ident = ident;
cmd->len = cpu_to_le16(dlen);
diff --git a/net/bluetooth/mgmt_util.c b/net/bluetooth/mgmt_util.c
index 11d0ca64402b..d057113e0d4b 100644
--- a/net/bluetooth/mgmt_util.c
+++ b/net/bluetooth/mgmt_util.c
@@ -66,7 +66,7 @@ int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel,
if (!skb)
return -ENOMEM;
- hdr = (void *) skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(event);
if (hdev)
hdr->index = cpu_to_le16(hdev->id);
@@ -103,13 +103,13 @@ int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
if (!skb)
return -ENOMEM;
- hdr = (void *) skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
hdr->index = cpu_to_le16(index);
hdr->len = cpu_to_le16(sizeof(*ev));
- ev = (void *) skb_put(skb, sizeof(*ev));
+ ev = skb_put(skb, sizeof(*ev));
ev->status = status;
ev->opcode = cpu_to_le16(cmd);
@@ -147,13 +147,13 @@ int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
if (!skb)
return -ENOMEM;
- hdr = (void *) skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
hdr->index = cpu_to_le16(index);
hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
- ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
+ ev = skb_put(skb, sizeof(*ev) + rp_len);
ev->opcode = cpu_to_le16(cmd);
ev->status = status;
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 8ebca9033d60..1a9b906c5a35 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -863,7 +863,7 @@ static int rfcomm_queue_disc(struct rfcomm_dlc *d)
if (!skb)
return -ENOMEM;
- cmd = (void *) __skb_put(skb, sizeof(*cmd));
+ cmd = __skb_put(skb, sizeof(*cmd));
cmd->addr = d->addr;
cmd->ctrl = __ctrl(RFCOMM_DISC, 1);
cmd->len = __len8(0);