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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:21 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:39 +0300
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /net/ipv4/igmp.c
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.xz
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/ipv4/igmp.c')
-rw-r--r--net/ipv4/igmp.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 8f6b5bbcbf69..2202edf31884 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -414,7 +414,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc,
skb = igmpv3_newpack(dev, dev->mtu);
if (!skb)
return NULL;
- pgr = (struct igmpv3_grec *)skb_put(skb, sizeof(struct igmpv3_grec));
+ pgr = skb_put(skb, sizeof(struct igmpv3_grec));
pgr->grec_type = type;
pgr->grec_auxwords = 0;
pgr->grec_nsrcs = 0;
@@ -508,7 +508,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc,
}
if (!skb)
return NULL;
- psrc = (__be32 *)skb_put(skb, sizeof(__be32));
+ psrc = skb_put(skb, sizeof(__be32));
*psrc = psf->sf_inaddr;
scount++; stotal++;
if ((type == IGMPV3_ALLOW_NEW_SOURCES ||
@@ -742,7 +742,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc,
((u8 *)&iph[1])[2] = 0;
((u8 *)&iph[1])[3] = 0;
- ih = (struct igmphdr *)skb_put(skb, sizeof(struct igmphdr));
+ ih = skb_put(skb, sizeof(struct igmphdr));
ih->type = type;
ih->code = 0;
ih->csum = 0;