From: YOSHIFUJI Hideaki
Sent: 1/24/2006 3:20:32 PM
> We can merge PACKET_AUTO_STATISTICS and PACKET_MANUAL_STATISTICS,
> into one, e.g. PACKET_ACCUMULATED_STATISTICS, and we can reuse
> PACKET_STATISTICS for resetting;
> case PACKET_ACCUMULATED_STATISTICS:
> {
> int val;
> if (len < sizeof(val))
> return -EINVAL;
> if (copy_from_user(&val, optval, len))
> return -EFAULT;
> po->auto_reset_stats = val;
> return 0;
> }
>
> case PACKET_STATISTICS:
> spin_lock_bh(&sk->sk_receive_queue.lock);
> memset(&po->stats, 0, sizeof po->stats);
> spin_unlock_bh(&sk->sk_receive_queue.lock);
> return 0;
>
> And, please provide getsockopt side. Thanks.
>
> --yoshfuji
This compiled fine, but is untested do to -rc1-git4 totally screwing up. It
let me do almost nothing. I could test it on an earlier version (say -rc1) if
it would be useful.
I wasn't exactly sure what to do when writing the getsockopt ACCUMULATE, but I
think I got it right.
Signed-off-by: Kris Katterjohn <[EMAIL PROTECTED]>
--- x/net/packet/af_packet.c 2006-01-24 18:27:41.000000000 -0600
+++ y/net/packet/af_packet.c 2006-01-24 18:02:21.000000000 -0600
@@ -41,6 +41,9 @@
* will simply extend the hardware address
* byte arrays at the end of sockaddr_ll
* and packet_mreq.
+ * Kris Katterjohn : Added PACKET_ACCUMULATE_STATISTICS
+ * [gs]etsockopt options and added
+ * PACKET_STATISTICS setsockopt option.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -190,6 +193,7 @@ struct packet_sock {
/* struct sock has to be the first member of packet_sock */
struct sock sk;
struct tpacket_stats stats;
+ int accumulate_stats;
#ifdef CONFIG_PACKET_MMAP
char * *pg_vec;
unsigned int head;
@@ -1021,6 +1025,7 @@ static int packet_create(struct socket *
po = pkt_sk(sk);
sk->sk_family = PF_PACKET;
po->num = protocol;
+ po->accumulate_stats = 0;
sk->sk_destruct = packet_sock_destruct;
atomic_inc(&packet_socks_nr);
@@ -1325,6 +1330,7 @@ static int
packet_setsockopt(struct socket *sock, int level, int optname, char __user
*optval, int optlen)
{
struct sock *sk = sock->sk;
+ struct packet_sock *po = pkt_sk(sk);
int ret;
if (level != SOL_PACKET)
@@ -1353,6 +1359,26 @@ packet_setsockopt(struct socket *sock, i
return ret;
}
#endif
+
+ case PACKET_ACCUMULATE_STATISTICS:
+ {
+ int val;
+
+ if (optlen != sizeof val)
+ return -EINVAL;
+ if (copy_from_user(&val, optval, optlen))
+ return -EFAULT;
+
+ po->accumulate_stats = !!val;
+ return 0;
+ }
+
+ case PACKET_STATISTICS:
+ spin_lock_bh(&sk->sk_receive_queue.lock);
+ memset(&po->stats, 0, sizeof po->stats);
+ spin_unlock_bh(&sk->sk_receive_queue.lock);
+ return 0;
+
#ifdef CONFIG_PACKET_MMAP
case PACKET_RX_RING:
{
@@ -1399,6 +1425,15 @@ static int packet_getsockopt(struct sock
return -EINVAL;
switch(optname) {
+ case PACKET_ACCUMULATE_STATISTICS:
+ {
+ if (len != sizeof po->accumulate_stats)
+ return -EINVAL;
+ if (copy_to_user(optval, &po->accumulate_stats, len))
+ return -EFAULT;
+ break;
+ }
+
case PACKET_STATISTICS:
{
struct tpacket_stats st;
@@ -1407,7 +1442,8 @@ static int packet_getsockopt(struct sock
len = sizeof(struct tpacket_stats);
spin_lock_bh(&sk->sk_receive_queue.lock);
st = po->stats;
- memset(&po->stats, 0, sizeof(st));
+ if (!po->accumulate_stats)
+ memset(&po->stats, 0, sizeof po->stats);
spin_unlock_bh(&sk->sk_receive_queue.lock);
st.tp_packets += st.tp_drops;
--- x/include/linux/if_packet.h 2006-01-24 18:27:41.000000000 -0600
+++ y/include/linux/if_packet.h 2006-01-24 17:50:02.000000000 -0600
@@ -37,8 +37,9 @@ struct sockaddr_ll
#define PACKET_RECV_OUTPUT 3
/* Value 4 is still used by obsolete turbo-packet. */
#define PACKET_RX_RING 5
-#define PACKET_STATISTICS 6
-#define PACKET_COPY_THRESH 7
+#define PACKET_ACCUMULATE_STATISTICS 6
+#define PACKET_STATISTICS 7
+#define PACKET_COPY_THRESH 8
struct tpacket_stats
{
-
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