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authorVlad Yasevich <vladislav.yasevich@hp.com>2006-01-17 11:53:06 -0800
committerSridhar Samudrala <sri@us.ibm.com>2006-01-17 11:53:06 -0800
commit49392e5ecf608da6770fd8723b534a0fc851edc4 (patch)
tree9d7484b86d279bee8e5612ce4bf6dae4efc3f1f7 /net
parent9834a2bb4970547540222fcba04e0a37d04cb0a0 (diff)
downloadop-kernel-dev-49392e5ecf608da6770fd8723b534a0fc851edc4.zip
op-kernel-dev-49392e5ecf608da6770fd8723b534a0fc851edc4.tar.gz
[SCTP]: sctp doesn't show all associations/endpoints in /proc
When creating a very large number of associations (and endpoints), /proc/assocs and /proc/eps will not show all of them. As a result netstat will not show all of the either. This is particularly evident when creating 1000+ associations (or endpoints). As an example with 1500 tcp style associations over loopback, netstat showed 1420 on my system instead of 3000. The reason for this is that the seq_operations start method is invoked multiple times bacause of the amount of data that is provided. The start method always increments the position parameter and since we use the position as the hash bucket id, we end up skipping hash buckets. This patch corrects this situation and get's rid of the silly hash-1 decrement. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/proc.c28
1 files changed, 10 insertions, 18 deletions
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 6e4dc28..1b5e5b1 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -176,7 +176,7 @@ static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_associa
static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
{
- if (*pos > sctp_ep_hashsize)
+ if (*pos >= sctp_ep_hashsize)
return NULL;
if (*pos < 0)
@@ -185,8 +185,6 @@ static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)
if (*pos == 0)
seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT UID INODE LADDRS\n");
- ++*pos;
-
return (void *)pos;
}
@@ -198,11 +196,9 @@ static void sctp_eps_seq_stop(struct seq_file *seq, void *v)
static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
- if (*pos > sctp_ep_hashsize)
+ if (++*pos >= sctp_ep_hashsize)
return NULL;
- ++*pos;
-
return pos;
}
@@ -216,17 +212,17 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
struct sock *sk;
int hash = *(int *)v;
- if (hash > sctp_ep_hashsize)
+ if (hash >= sctp_ep_hashsize)
return -ENOMEM;
- head = &sctp_ep_hashtable[hash-1];
+ head = &sctp_ep_hashtable[hash];
sctp_local_bh_disable();
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
ep = sctp_ep(epb);
sk = epb->sk;
seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
- sctp_sk(sk)->type, sk->sk_state, hash-1,
+ sctp_sk(sk)->type, sk->sk_state, hash,
epb->bind_addr.port,
sock_i_uid(sk), sock_i_ino(sk));
@@ -283,7 +279,7 @@ void sctp_eps_proc_exit(void)
static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
{
- if (*pos > sctp_assoc_hashsize)
+ if (*pos >= sctp_assoc_hashsize)
return NULL;
if (*pos < 0)
@@ -293,8 +289,6 @@ static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)
seq_printf(seq, " ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT "
"RPORT LADDRS <-> RADDRS\n");
- ++*pos;
-
return (void *)pos;
}
@@ -306,11 +300,9 @@ static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)
static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
- if (*pos > sctp_assoc_hashsize)
+ if (++*pos >= sctp_assoc_hashsize)
return NULL;
- ++*pos;
-
return pos;
}
@@ -323,10 +315,10 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
struct sock *sk;
int hash = *(int *)v;
- if (hash > sctp_assoc_hashsize)
+ if (hash >= sctp_assoc_hashsize)
return -ENOMEM;
- head = &sctp_assoc_hashtable[hash-1];
+ head = &sctp_assoc_hashtable[hash];
sctp_local_bh_disable();
read_lock(&head->lock);
for (epb = head->chain; epb; epb = epb->next) {
@@ -335,7 +327,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
seq_printf(seq,
"%8p %8p %-3d %-3d %-2d %-4d %4d %8d %8d %7d %5lu %-5d %5d ",
assoc, sk, sctp_sk(sk)->type, sk->sk_state,
- assoc->state, hash-1, assoc->assoc_id,
+ assoc->state, hash, assoc->assoc_id,
(sk->sk_rcvbuf - assoc->rwnd),
assoc->sndbuf_used,
sock_i_uid(sk), sock_i_ino(sk),
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