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>
diff --git a/net/decnet/dn_nsp_out.c b/net/decnet/dn_nsp_out.c
index b8a5587..7e054b2 100644
--- a/net/decnet/dn_nsp_out.c
+++ b/net/decnet/dn_nsp_out.c
@@ -484,7 +484,7 @@ void dn_send_conn_ack (struct sock *sk)
if ((skb = dn_alloc_skb(sk, 3, sk->sk_allocation)) == NULL)
return;
- msg = (struct nsp_conn_ack_msg *)skb_put(skb, 3);
+ msg = skb_put(skb, 3);
msg->msgflg = 0x24;
msg->dstaddr = scp->addrrem;
@@ -522,7 +522,7 @@ void dn_send_conn_conf(struct sock *sk, gfp_t gfp)
if ((skb = dn_alloc_skb(sk, 50 + len, gfp)) == NULL)
return;
- msg = (struct nsp_conn_init_msg *)skb_put(skb, sizeof(*msg));
+ msg = skb_put(skb, sizeof(*msg));
msg->msgflg = 0x28;
msg->dstaddr = scp->addrrem;
msg->srcaddr = scp->addrloc;
@@ -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);
- *skb_put(skb,1) = len;
+ *(u8 *)skb_put(skb, 1) = len;
if (len > 0)
skb_put_data(skb, scp->conndata_out.opt_data, len);
@@ -662,7 +662,7 @@ void dn_nsp_send_conninit(struct sock *sk, unsigned char msgflg)
return;
cb = DN_SKB_CB(skb);
- msg = (struct nsp_conn_init_msg *)skb_put(skb,sizeof(*msg));
+ msg = skb_put(skb, sizeof(*msg));
msg->msgflg = msgflg;
msg->dstaddr = 0x0000; /* Remote Node will assign it*/
@@ -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;
- *skb_put(skb, 1) = menuver; /* Menu Version */
+ *(u8 *)skb_put(skb, 1) = menuver; /* Menu Version */
aux = scp->accessdata.acc_userl;
- *skb_put(skb, 1) = aux;
+ *(u8 *)skb_put(skb, 1) = aux;
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_user, aux);
aux = scp->accessdata.acc_passl;
- *skb_put(skb, 1) = aux;
+ *(u8 *)skb_put(skb, 1) = aux;
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_pass, aux);
aux = scp->accessdata.acc_accl;
- *skb_put(skb, 1) = aux;
+ *(u8 *)skb_put(skb, 1) = aux;
if (aux > 0)
skb_put_data(skb, scp->accessdata.acc_acc, aux);
aux = (__u8)le16_to_cpu(scp->conndata_out.opt_optl);
- *skb_put(skb, 1) = aux;
+ *(u8 *)skb_put(skb, 1) = aux;
if (aux > 0)
skb_put_data(skb, scp->conndata_out.opt_data, aux);