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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:23 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:40 -0400
commitd58ff35122847a83ba55394e2ae3a1527b6febf5 (patch)
treee1ecf758e86519922c403f1aa88f19ef25a554ad /net/802/fc.c
parentaf72868b9070d1b843c829f0d0d0b22c04a20815 (diff)
networking: make skb_push & __skb_push 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_push, __skb_push, skb_push_rcsum }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) @@ expression SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - fn(SKB, LEN)[0] + *(u8 *)fn(SKB, LEN) Note that the last part there converts from push(...)[0] to the more idiomatic *(u8 *)push(...). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/802/fc.c')
-rw-r--r--net/802/fc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/802/fc.c b/net/802/fc.c
index 1bb496ea997e..058a9f708918 100644
--- a/net/802/fc.c
+++ b/net/802/fc.c
@@ -49,7 +49,7 @@ static int fc_header(struct sk_buff *skb, struct net_device *dev,
struct fcllc *fcllc;
hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc);
- fch = (struct fch_hdr *)skb_push(skb, hdr_len);
+ fch = skb_push(skb, hdr_len);
fcllc = (struct fcllc *)(fch+1);
fcllc->dsap = fcllc->ssap = EXTENDED_SAP;
fcllc->llc = UI_CMD;
@@ -59,7 +59,7 @@ static int fc_header(struct sk_buff *skb, struct net_device *dev,
else
{
hdr_len = sizeof(struct fch_hdr);
- fch = (struct fch_hdr *)skb_push(skb, hdr_len);
+ fch = skb_push(skb, hdr_len);
}
if(saddr)