summaryrefslogtreecommitdiff
path: root/drivers/net/ppp/ppp_generic.c
diff options
context:
space:
mode:
authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:23 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:40 +0300
commitd58ff35122847a83ba55394e2ae3a1527b6febf5 (patch)
treee1ecf758e86519922c403f1aa88f19ef25a554ad /drivers/net/ppp/ppp_generic.c
parentaf72868b9070d1b843c829f0d0d0b22c04a20815 (diff)
downloadlinux-d58ff35122847a83ba55394e2ae3a1527b6febf5.tar.xz
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 'drivers/net/ppp/ppp_generic.c')
-rw-r--r--drivers/net/ppp/ppp_generic.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index bbded33120fe..d42091f11eb8 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1490,7 +1490,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
/* check if we should pass this packet */
/* the filter instructions are constructed assuming
a four-byte PPP header on each packet */
- *skb_push(skb, 2) = 1;
+ *(u8 *)skb_push(skb, 2) = 1;
if (ppp->pass_filter &&
BPF_PROG_RUN(ppp->pass_filter, skb) == 0) {
if (ppp->debug & 1)
@@ -2133,7 +2133,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
if (skb_unclone(skb, GFP_ATOMIC))
goto err;
- *skb_push(skb, 2) = 0;
+ *(u8 *)skb_push(skb, 2) = 0;
if (ppp->pass_filter &&
BPF_PROG_RUN(ppp->pass_filter, skb) == 0) {
if (ppp->debug & 1)
@@ -2267,7 +2267,7 @@ ppp_receive_mp_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
* Do protocol ID decompression on the first fragment of each packet.
*/
if ((PPP_MP_CB(skb)->BEbits & B) && (skb->data[0] & 1))
- *skb_push(skb, 1) = 0;
+ *(u8 *)skb_push(skb, 1) = 0;
/*
* Expand sequence number to 32 bits, making it as close