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[AF_PACKET]: Remove unnecessary casts.

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packet_lookup_frame() always returns tpacket_hdr*, so there's no reason
to return char* and require casting by callers.

Also, remove a cast of void*.

Signed-off-by: Jason Lunz <lunz@falooley.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Lunz 2007-02-20 23:19:54 -08:00 committed by David S. Miller
parent ca17c23345
commit ad930650c0
1 changed files with 5 additions and 8 deletions
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13
net/packet/af_packet.c
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@ -227,17 +227,14 @@ struct packet_skb_cb {
#ifdef CONFIG_PACKET_MMAP #ifdef CONFIG_PACKET_MMAP
static inline char *packet_lookup_frame(struct packet_sock *po, unsigned int position) static inline struct tpacket_hdr *packet_lookup_frame(struct packet_sock *po, unsigned int position)
{ {
unsigned int pg_vec_pos, frame_offset; unsigned int pg_vec_pos, frame_offset;
char *frame;
pg_vec_pos = position / po->frames_per_block; pg_vec_pos = position / po->frames_per_block;
frame_offset = position % po->frames_per_block; frame_offset = position % po->frames_per_block;
frame = po->pg_vec[pg_vec_pos] + (frame_offset * po->frame_size); return (struct tpacket_hdr *)(po->pg_vec[pg_vec_pos] + (frame_offset * po->frame_size));
return frame;
} }
#endif #endif
@ -639,7 +636,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
} }
spin_lock(&sk->sk_receive_queue.lock); spin_lock(&sk->sk_receive_queue.lock);
h = (struct tpacket_hdr *)packet_lookup_frame(po, po->head); h = packet_lookup_frame(po, po->head);
if (h->tp_status) if (h->tp_status)
goto ring_is_full; goto ring_is_full;
@ -1473,7 +1470,7 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void
{ {
struct sock *sk; struct sock *sk;
struct hlist_node *node; struct hlist_node *node;
struct net_device *dev = (struct net_device*)data; struct net_device *dev = data;
read_lock(&packet_sklist_lock); read_lock(&packet_sklist_lock);
sk_for_each(sk, node, &packet_sklist) { sk_for_each(sk, node, &packet_sklist) {
@ -1588,7 +1585,7 @@ static unsigned int packet_poll(struct file * file, struct socket *sock,
unsigned last = po->head ? po->head-1 : po->frame_max; unsigned last = po->head ? po->head-1 : po->frame_max;
struct tpacket_hdr *h; struct tpacket_hdr *h;
h = (struct tpacket_hdr *)packet_lookup_frame(po, last); h = packet_lookup_frame(po, last);
if (h->tp_status) if (h->tp_status)
mask |= POLLIN | POLLRDNORM; mask |= POLLIN | POLLRDNORM;