batman-adv: Calculate sizeof using variable insead of types
Documentation/CodingStyle recommends to use the form
p = kmalloc(sizeof(*p), ...);
to calculate the size of a struct and not the version where the struct
name is spelled out to prevent bugs when the type of p changes. This
also seems appropriate for manipulation of buffers when they are
directly associated with p.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c
index b48954c..ea8d7e9 100644
--- a/net/batman-adv/vis.c
+++ b/net/batman-adv/vis.c
@@ -241,7 +241,7 @@
hlist_for_each_entry_rcu(info, node, head, hash_entry) {
packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(struct vis_packet));
+ ((char *)packet + sizeof(*packet));
for (j = 0; j < packet->entries; j++) {
if (entries[j].quality == 0)
@@ -289,7 +289,7 @@
hlist_for_each_entry_rcu(info, node, head, hash_entry) {
packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(struct vis_packet));
+ ((char *)packet + sizeof(*packet));
for (j = 0; j < packet->entries; j++) {
if (entries[j].quality == 0)
@@ -367,7 +367,7 @@
{
struct recvlist_node *entry;
- entry = kmalloc(sizeof(struct recvlist_node), GFP_ATOMIC);
+ entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
if (!entry)
return;
@@ -414,11 +414,11 @@
return NULL;
/* see if the packet is already in vis_hash */
- search_elem.skb_packet = dev_alloc_skb(sizeof(struct vis_packet));
+ search_elem.skb_packet = dev_alloc_skb(sizeof(*search_packet));
if (!search_elem.skb_packet)
return NULL;
search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
- sizeof(struct vis_packet));
+ sizeof(*search_packet));
memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
old_info = vis_hash_find(bat_priv, &search_elem);
@@ -444,27 +444,26 @@
kref_put(&old_info->refcount, free_info);
}
- info = kmalloc(sizeof(struct vis_info), GFP_ATOMIC);
+ info = kmalloc(sizeof(*info), GFP_ATOMIC);
if (!info)
return NULL;
- info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
- vis_info_len + sizeof(struct ethhdr));
+ info->skb_packet = dev_alloc_skb(sizeof(*packet) + vis_info_len +
+ sizeof(struct ethhdr));
if (!info->skb_packet) {
kfree(info);
return NULL;
}
skb_reserve(info->skb_packet, sizeof(struct ethhdr));
- packet = (struct vis_packet *)skb_put(info->skb_packet,
- sizeof(struct vis_packet) +
- vis_info_len);
+ packet = (struct vis_packet *)skb_put(info->skb_packet, sizeof(*packet)
+ + vis_info_len);
kref_init(&info->refcount);
INIT_LIST_HEAD(&info->send_list);
INIT_LIST_HEAD(&info->recv_list);
info->first_seen = jiffies;
info->bat_priv = bat_priv;
- memcpy(packet, vis_packet, sizeof(struct vis_packet) + vis_info_len);
+ memcpy(packet, vis_packet, sizeof(*packet) + vis_info_len);
/* initialize and add new packet. */
*is_new = 1;
@@ -634,7 +633,7 @@
packet->ttl = TTL;
packet->seqno = htonl(ntohl(packet->seqno) + 1);
packet->entries = 0;
- skb_trim(info->skb_packet, sizeof(struct vis_packet));
+ skb_trim(info->skb_packet, sizeof(*packet));
if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
best_tq = find_best_vis_server(bat_priv, info);
@@ -910,17 +909,15 @@
goto err;
}
- bat_priv->my_vis_info->skb_packet = dev_alloc_skb(
- sizeof(struct vis_packet) +
- MAX_VIS_PACKET_SIZE +
- sizeof(struct ethhdr));
+ bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
+ MAX_VIS_PACKET_SIZE +
+ sizeof(struct ethhdr));
if (!bat_priv->my_vis_info->skb_packet)
goto free_info;
skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr));
- packet = (struct vis_packet *)skb_put(
- bat_priv->my_vis_info->skb_packet,
- sizeof(struct vis_packet));
+ packet = (struct vis_packet *)skb_put(bat_priv->my_vis_info->skb_packet,
+ sizeof(*packet));
/* prefill the vis info */
bat_priv->my_vis_info->first_seen = jiffies -
