Piteball
/
android_kernel_samsung_msm8976
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
1
1
Fork 0
Code Issues Projects Releases Wiki Activity

[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>
This commit is contained in:
Vlad Yasevich 2006-01-17 11:53:06 -08:00 committed by Sridhar Samudrala
parent 9834a2bb49
commit 49392e5ecf
1 changed files with 10 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
net/sctp/proc.c
View File

@ -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),