From 4df864c1d9afb46e2461a9f808d9f11a42d31bad Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:21 +0200 Subject: 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 Signed-off-by: David S. Miller --- drivers/atm/atmtcp.c | 4 ++-- drivers/atm/solos-pci.c | 12 ++++++------ 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/atm') diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c index 3ef6253e1cce..56fa16c85ebf 100644 --- a/drivers/atm/atmtcp.c +++ b/drivers/atm/atmtcp.c @@ -60,7 +60,7 @@ static int atmtcp_send_control(struct atm_vcc *vcc,int type, return -EUNATCH; } atm_force_charge(out_vcc,skb->truesize); - new_msg = (struct atmtcp_control *) skb_put(skb,sizeof(*new_msg)); + new_msg = skb_put(skb, sizeof(*new_msg)); *new_msg = *msg; new_msg->hdr.length = ATMTCP_HDR_MAGIC; new_msg->type = type; @@ -217,7 +217,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb) atomic_inc(&vcc->stats->tx_err); return -ENOBUFS; } - hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr)); + hdr = skb_put(new_skb, sizeof(struct atmtcp_hdr)); hdr->vpi = htons(vcc->vpi); hdr->vci = htons(vcc->vci); hdr->length = htonl(skb->len); diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index 077dd15c3a40..4fc99ae1c534 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -205,7 +205,7 @@ static ssize_t solos_param_show(struct device *dev, struct device_attribute *att return -ENOMEM; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); buflen = snprintf((void *)&header[1], buflen - 1, "L%05d\n%s\n", current->pid, attr->attr.name); @@ -261,7 +261,7 @@ static ssize_t solos_param_store(struct device *dev, struct device_attribute *at return -ENOMEM; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); buflen = snprintf((void *)&header[1], buflen - 1, "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf); @@ -486,7 +486,7 @@ static int send_command(struct solos_card *card, int dev, const char *buf, size_ return 0; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); header->size = cpu_to_le16(size); header->vpi = cpu_to_le16(0); @@ -945,7 +945,7 @@ static int popen(struct atm_vcc *vcc) dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n"); return -ENOMEM; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); header->size = cpu_to_le16(0); header->vpi = cpu_to_le16(vcc->vpi); @@ -982,7 +982,7 @@ static void pclose(struct atm_vcc *vcc) dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n"); return; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); header->size = cpu_to_le16(0); header->vpi = cpu_to_le16(vcc->vpi); @@ -1398,7 +1398,7 @@ static int atm_init(struct solos_card *card, struct device *parent) continue; } - header = (void *)skb_put(skb, sizeof(*header)); + header = skb_put(skb, sizeof(*header)); header->size = cpu_to_le16(0); header->vpi = cpu_to_le16(0); -- cgit