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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:22 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 17:48:39 +0200
commitaf72868b9070d1b843c829f0d0d0b22c04a20815 (patch)
tree537bb273e315e1238cff969adbfc70cb35ba9a44 /drivers
parentnetworking: make skb_put & friends return void pointers (diff)
downloadlinux-af72868b9070d1b843c829f0d0d0b22c04a20815.tar.xz
linux-af72868b9070d1b843c829f0d0d0b22c04a20815.zip
networking: make skb_pull & 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 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_pull, __skb_pull, skb_pull_inline, __pskb_pull_tail, __pskb_pull, pskb_pull }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_pull, __skb_pull, skb_pull_inline, __pskb_pull_tail, __pskb_pull, pskb_pull }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/bluetooth/hci_nokia.c4
-rw-r--r--drivers/isdn/i4l/isdn_ppp.c2
-rw-r--r--drivers/net/wan/hdlc_ppp.c2
-rw-r--r--drivers/nfc/nxp-nci/firmware.c3
-rw-r--r--drivers/scsi/fnic/fnic_fcs.c2
-rw-r--r--drivers/scsi/qedf/qedf_main.c2
6 files changed, 7 insertions, 8 deletions
diff --git a/drivers/bluetooth/hci_nokia.c b/drivers/bluetooth/hci_nokia.c
index c1b081725b2c..072a77a61e67 100644
--- a/drivers/bluetooth/hci_nokia.c
+++ b/drivers/bluetooth/hci_nokia.c
@@ -557,7 +557,7 @@ static int nokia_recv_negotiation_packet(struct hci_dev *hdev,
goto finish_neg;
}
- evt = (struct hci_nokia_neg_evt *)skb_pull(skb, sizeof(*hdr));
+ evt = skb_pull(skb, sizeof(*hdr));
if (evt->ack != NOKIA_NEG_ACK) {
dev_err(dev, "Negotiation received: wrong reply");
@@ -595,7 +595,7 @@ static int nokia_recv_alive_packet(struct hci_dev *hdev, struct sk_buff *skb)
goto finish_alive;
}
- pkt = (struct hci_nokia_alive_pkt *)skb_pull(skb, sizeof(*hdr));
+ pkt = skb_pull(skb, sizeof(*hdr));
if (pkt->mid != NOKIA_ALIVE_RESP) {
dev_err(dev, "Alive received: invalid response: 0x%02x!",
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 9ce23cf3d7d2..e26cae9baf17 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -1509,7 +1509,7 @@ int isdn_ppp_autodial_filter(struct sk_buff *skb, isdn_net_local *lp)
* temporarily remove part of the fake header stuck on
* earlier.
*/
- *skb_pull(skb, IPPP_MAX_HEADER - 4) = 1; /* indicate outbound */
+ *(u8 *)skb_pull(skb, IPPP_MAX_HEADER - 4) = 1; /* indicate outbound */
{
__be16 *p = (__be16 *)skb->data;
diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index fa3460a0dbbe..0d2e00ece804 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -448,7 +448,7 @@ static int ppp_rx(struct sk_buff *skb)
/* Check HDLC header */
if (skb->len < sizeof(struct hdlc_header))
goto rx_error;
- cp = (struct cp_header*)skb_pull(skb, sizeof(struct hdlc_header));
+ cp = skb_pull(skb, sizeof(struct hdlc_header));
if (hdr->address != HDLC_ADDR_ALLSTATIONS ||
hdr->control != HDLC_CTRL_UI)
goto rx_error;
diff --git a/drivers/nfc/nxp-nci/firmware.c b/drivers/nfc/nxp-nci/firmware.c
index 99ffee1dfd1e..e50c6f67bb39 100644
--- a/drivers/nfc/nxp-nci/firmware.c
+++ b/drivers/nfc/nxp-nci/firmware.c
@@ -311,8 +311,7 @@ void nxp_nci_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
if (nxp_nci_fw_check_crc(skb) != 0x00)
fw_info->cmd_result = -EBADMSG;
else
- fw_info->cmd_result = nxp_nci_fw_read_status(
- *skb_pull(skb, NXP_NCI_FW_HDR_LEN));
+ fw_info->cmd_result = nxp_nci_fw_read_status(*(u8 *)skb_pull(skb, NXP_NCI_FW_HDR_LEN));
kfree_skb(skb);
} else {
fw_info->cmd_result = -EIO;
diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c
index 245dcd95e11f..e3b964b7235a 100644
--- a/drivers/scsi/fnic/fnic_fcs.c
+++ b/drivers/scsi/fnic/fnic_fcs.c
@@ -640,7 +640,7 @@ static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
eh = (struct ethhdr *)skb->data;
if (eh->h_proto == htons(ETH_P_8021Q)) {
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
- eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
+ eh = skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}
if (eh->h_proto == htons(ETH_P_FIP)) {
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index da0fcce6f842..542a6e75c2bb 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -2117,7 +2117,7 @@ static void qedf_ll2_process_skb(struct work_struct *work)
/* Undo VLAN encapsulation */
if (eh->h_proto == htons(ETH_P_8021Q)) {
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
- eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
+ eh = skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}