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/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 1d6e180..7418088 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -650,7 +650,7 @@ static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
skb = dev_alloc_skb(sizeof(*pspoll));
if (!skb)
return;
- pspoll = (void *) skb_put(skb, sizeof(*pspoll));
+ pspoll = skb_put(skb, sizeof(*pspoll));
pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_PSPOLL |
IEEE80211_FCTL_PM);
@@ -681,7 +681,7 @@ static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
skb = dev_alloc_skb(sizeof(*hdr));
if (!skb)
return;
- hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
+ hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
(ps ? IEEE80211_FCTL_PM : 0));
@@ -892,7 +892,7 @@ static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
if (skb == NULL)
return;
- hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
@@ -904,7 +904,7 @@ static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
flags = IEEE80211_CHAN_2GHZ;
hdr->rt_chbitmask = cpu_to_le16(flags);
- hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
+ hdr11 = skb_put(skb, 10);
hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_ACK);
hdr11->duration_id = cpu_to_le16(0);