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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:21 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:39 -0400
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /net/sctp
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.bz2
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/sctp')
-rw-r--r--net/sctp/sm_make_chunk.c2
-rw-r--r--net/sctp/ulpevent.c29
2 files changed, 11 insertions, 20 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 034e916362cf..2c196b3e9cd3 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1389,7 +1389,7 @@ static struct sctp_chunk *_sctp_make_chunk(const struct sctp_association *asoc,
goto nodata;
/* Make room for the chunk header. */
- chunk_hdr = (sctp_chunkhdr_t *)skb_put(skb, sizeof(sctp_chunkhdr_t));
+ chunk_hdr = skb_put(skb, sizeof(sctp_chunkhdr_t));
chunk_hdr->type = type;
chunk_hdr->flags = flags;
chunk_hdr->length = htons(sizeof(sctp_chunkhdr_t));
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index ec2b3e013c2f..e361f0b57fb6 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -167,8 +167,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_authkey(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
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 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
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;