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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/batman-adv
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
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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/batman-adv')
-rw-r--r--net/batman-adv/icmp_socket.c2
-rw-r--r--net/batman-adv/tp_meter.c6
2 files changed, 4 insertions, 4 deletions
diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index 6308c9f0fd96..8ead292886d1 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -207,7 +207,7 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff,
skb->priority = TC_PRIO_CONTROL;
skb_reserve(skb, ETH_HLEN);
- icmp_header = (struct batadv_icmp_header *)skb_put(skb, packet_len);
+ icmp_header = skb_put(skb, packet_len);
if (copy_from_user(icmp_header, buff, packet_len)) {
len = -EFAULT;
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index e3e2585d0977..bfe8effe9238 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -595,7 +595,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src,
return BATADV_TP_REASON_MEMORY_ERROR;
skb_reserve(skb, ETH_HLEN);
- icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
+ icmp = skb_put(skb, sizeof(*icmp));
/* fill the icmp header */
ether_addr_copy(icmp->dst, orig_node->orig);
@@ -612,7 +612,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src,
icmp->timestamp = htonl(timestamp);
data_len = len - sizeof(*icmp);
- data = (u8 *)skb_put(skb, data_len);
+ data = skb_put(skb, data_len);
batadv_tp_fill_prerandom(tp_vars, data, data_len);
r = batadv_send_skb_to_orig(skb, orig_node, NULL);
@@ -1190,7 +1190,7 @@ static int batadv_tp_send_ack(struct batadv_priv *bat_priv, const u8 *dst,
}
skb_reserve(skb, ETH_HLEN);
- icmp = (struct batadv_icmp_tp_packet *)skb_put(skb, sizeof(*icmp));
+ icmp = skb_put(skb, sizeof(*icmp));
icmp->packet_type = BATADV_ICMP;
icmp->version = BATADV_COMPAT_VERSION;
icmp->ttl = BATADV_TTL;