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Date: Tue, 13 Nov 2007 17:57:40 +0800
From: Wang Chen <wangchen@...fujitsu.com>
To: netdev@...r.kernel.org
Subject: [PATCH] IPV4: add raw drops counter
Add raw drops counter for IPv4 in /proc/net/raw .
Signed-off-by: Wang Chen <wangchen@...fujitsu.com>
---
include/net/sock.h | 2 ++
net/core/sock.c | 1 +
net/ipv4/raw.c | 16 +++++++++-------
3 files changed, 12 insertions(+), 7 deletions(-)
diff -Nurp linux-2.6.24-rc2.org/include/net/sock.h linux-2.6.24-rc2/include/net/sock.h
--- linux-2.6.24-rc2.org/include/net/sock.h 2007-11-09 16:37:08.000000000 +0800
+++ linux-2.6.24-rc2/include/net/sock.h 2007-11-13 15:19:20.000000000 +0800
@@ -156,6 +156,7 @@ struct sock_common {
* @sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt, IPV6_ADDRFORM for instance)
* @sk_err: last error
* @sk_err_soft: errors that don't cause failure but are the cause of a persistent failure not just 'timed out'
+ * @sk_drops: raw drops counter
* @sk_ack_backlog: current listen backlog
* @sk_max_ack_backlog: listen backlog set in listen()
* @sk_priority: %SO_PRIORITY setting
@@ -239,6 +240,7 @@ struct sock {
rwlock_t sk_callback_lock;
int sk_err,
sk_err_soft;
+ atomic_t sk_drops;
unsigned short sk_ack_backlog;
unsigned short sk_max_ack_backlog;
__u32 sk_priority;
diff -Nurp linux-2.6.24-rc2.org/net/core/sock.c linux-2.6.24-rc2/net/core/sock.c
--- linux-2.6.24-rc2.org/net/core/sock.c 2007-11-09 16:37:40.000000000 +0800
+++ linux-2.6.24-rc2/net/core/sock.c 2007-11-13 15:20:53.000000000 +0800
@@ -1611,6 +1611,7 @@ void sock_init_data(struct socket *sock,
sk->sk_stamp = ktime_set(-1L, -1L);
atomic_set(&sk->sk_refcnt, 1);
+ atomic_set(&sk->sk_drops, 0);
}
void fastcall lock_sock_nested(struct sock *sk, int subclass)
diff -Nurp linux-2.6.24-rc2.org/net/ipv4/raw.c linux-2.6.24-rc2/net/ipv4/raw.c
--- linux-2.6.24-rc2.org/net/ipv4/raw.c 2007-11-09 16:37:56.000000000 +0800
+++ linux-2.6.24-rc2/net/ipv4/raw.c 2007-11-13 15:48:17.000000000 +0800
@@ -241,7 +241,7 @@ static int raw_rcv_skb(struct sock * sk,
/* Charge it to the socket. */
if (sock_queue_rcv_skb(sk, skb) < 0) {
- /* FIXME: increment a raw drops counter here */
+ atomic_inc(&sk->sk_drops);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -866,28 +866,30 @@ static __inline__ char *get_raw_sock(str
srcp = inet->num;
sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X"
- " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p",
+ " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d",
i, src, srcp, dest, destp, sp->sk_state,
atomic_read(&sp->sk_wmem_alloc),
atomic_read(&sp->sk_rmem_alloc),
0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
- atomic_read(&sp->sk_refcnt), sp);
+ atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
return tmpbuf;
}
+#define TMPSZ 128
+
static int raw_seq_show(struct seq_file *seq, void *v)
{
- char tmpbuf[129];
+ char tmpbuf[TMPSZ+1];
if (v == SEQ_START_TOKEN)
- seq_printf(seq, "%-127s\n",
+ seq_printf(seq, "%-*s\n", TMPSZ-1,
" sl local_address rem_address st tx_queue "
"rx_queue tr tm->when retrnsmt uid timeout "
- "inode");
+ "inode drops");
else {
struct raw_iter_state *state = raw_seq_private(seq);
- seq_printf(seq, "%-127s\n",
+ seq_printf(seq, "%-*s\n", TMPSZ-1,
get_raw_sock(v, tmpbuf, state->bucket));
}
return 0;
-
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