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/sctp/ulpevent.c b/net/sctp/ulpevent.c
index ec2b3e0..e361f0b 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -167,8 +167,7 @@
goto fail;
skb = sctp_event2skb(event);
- sac = (struct sctp_assoc_change *) skb_put(skb,
- sizeof(struct sctp_assoc_change));
+ sac = skb_put(skb, sizeof(struct sctp_assoc_change));
}
/* Socket Extensions for SCTP
@@ -270,8 +269,7 @@
goto fail;
skb = sctp_event2skb(event);
- spc = (struct sctp_paddr_change *)
- skb_put(skb, sizeof(struct sctp_paddr_change));
+ spc = skb_put(skb, sizeof(struct sctp_paddr_change));
/* Sockets API Extensions for SCTP
* Section 5.3.1.2 SCTP_PEER_ADDR_CHANGE
@@ -549,8 +547,7 @@
goto fail;
skb = sctp_event2skb(event);
- sse = (struct sctp_shutdown_event *)
- skb_put(skb, sizeof(struct sctp_shutdown_event));
+ sse = skb_put(skb, sizeof(struct sctp_shutdown_event));
/* Socket Extensions for SCTP
* 5.3.1.5 SCTP_SHUTDOWN_EVENT
@@ -612,8 +609,7 @@
goto fail;
skb = sctp_event2skb(event);
- sai = (struct sctp_adaptation_event *)
- skb_put(skb, sizeof(struct sctp_adaptation_event));
+ sai = skb_put(skb, sizeof(struct sctp_adaptation_event));
sai->sai_type = SCTP_ADAPTATION_INDICATION;
sai->sai_flags = 0;
@@ -751,8 +747,7 @@
goto fail;
skb = sctp_event2skb(event);
- pd = (struct sctp_pdapi_event *)
- skb_put(skb, sizeof(struct sctp_pdapi_event));
+ pd = skb_put(skb, sizeof(struct sctp_pdapi_event));
/* pdapi_type
* It should be SCTP_PARTIAL_DELIVERY_EVENT
@@ -803,8 +798,7 @@
goto fail;
skb = sctp_event2skb(event);
- ak = (struct sctp_authkey_event *)
- skb_put(skb, sizeof(struct sctp_authkey_event));
+ ak = skb_put(skb, sizeof(struct sctp_authkey_event));
ak->auth_type = SCTP_AUTHENTICATION_EVENT;
ak->auth_flags = 0;
@@ -842,8 +836,7 @@
return NULL;
skb = sctp_event2skb(event);
- sdry = (struct sctp_sender_dry_event *)
- skb_put(skb, sizeof(struct sctp_sender_dry_event));
+ sdry = skb_put(skb, sizeof(struct sctp_sender_dry_event));
sdry->sender_dry_type = SCTP_SENDER_DRY_EVENT;
sdry->sender_dry_flags = 0;
@@ -869,7 +862,7 @@
return NULL;
skb = sctp_event2skb(event);
- sreset = (struct sctp_stream_reset_event *)skb_put(skb, length);
+ sreset = skb_put(skb, length);
sreset->strreset_type = SCTP_STREAM_RESET_EVENT;
sreset->strreset_flags = flags;
@@ -897,8 +890,7 @@
return NULL;
skb = sctp_event2skb(event);
- areset = (struct sctp_assoc_reset_event *)
- skb_put(skb, sizeof(struct sctp_assoc_reset_event));
+ areset = skb_put(skb, sizeof(struct sctp_assoc_reset_event));
areset->assocreset_type = SCTP_ASSOC_RESET_EVENT;
areset->assocreset_flags = flags;
@@ -925,8 +917,7 @@
return NULL;
skb = sctp_event2skb(event);
- schange = (struct sctp_stream_change_event *)
- skb_put(skb, sizeof(struct sctp_stream_change_event));
+ schange = skb_put(skb, sizeof(struct sctp_stream_change_event));
schange->strchange_type = SCTP_STREAM_CHANGE_EVENT;
schange->strchange_flags = flags;