Commit bca735bd authored by Vladislav Yasevich's avatar Vladislav Yasevich Committed by David S. Miller
Browse files

[SCTP] Extend the info exported via /proc/net/sctp to support netstat for SCTP. 



Signed-off-by: default avatarVladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: default avatarSridhar Samudrala <sri@us.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0fd9a65a

net/sctp/proc.c

+151 −43
Original line number Diff line number Diff line
@@ -132,14 +132,25 @@ void sctp_snmp_proc_exit(void) 
static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb)

{

	struct list_head *pos;

	struct sctp_association *asoc;

	struct sctp_sockaddr_entry *laddr;

	union sctp_addr *addr;

	struct sctp_transport *peer;

	union sctp_addr *addr, *primary = NULL;

	struct sctp_af *af;



	if (epb->type == SCTP_EP_TYPE_ASSOCIATION) {

	    asoc = sctp_assoc(epb);

	    peer = asoc->peer.primary_path;

	    primary = &peer->saddr;

	}



	list_for_each(pos, &epb->bind_addr.address_list) {

		laddr = list_entry(pos, struct sctp_sockaddr_entry, list);

		addr = (union sctp_addr *)&laddr->a;

		af = sctp_get_af_specific(addr->sa.sa_family);

		if (primary && af->cmp_addr(addr, primary)) {

			seq_printf(seq, "*");

		}

		af->seq_dump_addr(seq, addr);

	}

}
@@ -149,17 +160,54 @@ static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_associa 
{

	struct list_head *pos;

	struct sctp_transport *transport;

	union sctp_addr *addr;

	union sctp_addr *addr, *primary;

	struct sctp_af *af;



	primary = &(assoc->peer.primary_addr);

	list_for_each(pos, &assoc->peer.transport_addr_list) {

		transport = list_entry(pos, struct sctp_transport, transports);

		addr = (union sctp_addr *)&transport->ipaddr;

		af = sctp_get_af_specific(addr->sa.sa_family);

		if (af->cmp_addr(addr, primary)) {

			seq_printf(seq, "*");

		}

		af->seq_dump_addr(seq, addr);

	}

}



static void * sctp_eps_seq_start(struct seq_file *seq, loff_t *pos)

{

	if (*pos > sctp_ep_hashsize)

		return NULL;



	if (*pos < 0)

		*pos = 0;



	if (*pos == 0)

		seq_printf(seq, " ENDPT     SOCK   STY SST HBKT LPORT   UID INODE LADDRS\n");



	++*pos;



	return (void *)pos;

}



static void sctp_eps_seq_stop(struct seq_file *seq, void *v)

{

	return;

}





static void * sctp_eps_seq_next(struct seq_file *seq, void *v, loff_t *pos)

{

	if (*pos > sctp_ep_hashsize)

		return NULL;



	++*pos;



	return pos;

}





/* Display sctp endpoints (/proc/net/sctp/eps). */

static int sctp_eps_seq_show(struct seq_file *seq, void *v)

{
@@ -167,38 +215,50 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v) 
	struct sctp_ep_common *epb;

	struct sctp_endpoint *ep;

	struct sock *sk;

	int hash;

	int    hash = *(int *)v;



	seq_printf(seq, " ENDPT     SOCK   STY SST HBKT LPORT LADDRS\n");

	for (hash = 0; hash < sctp_ep_hashsize; hash++) {

		head = &sctp_ep_hashtable[hash];

	if (hash > sctp_ep_hashsize)

		return -ENOMEM;



	head = &sctp_ep_hashtable[hash-1];

	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 ", ep, sk,

				   sctp_sk(sk)->type, sk->sk_state, hash,

				   epb->bind_addr.port);

		seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,

			   sctp_sk(sk)->type, sk->sk_state, hash-1,

			   epb->bind_addr.port,

			   sock_i_uid(sk), sock_i_ino(sk));



		sctp_seq_dump_local_addrs(seq, epb);

		seq_printf(seq, "\n");

	}

	read_unlock(&head->lock);

	}

	sctp_local_bh_enable();



	return 0;

}



static struct seq_operations sctp_eps_ops = {

	.start = sctp_eps_seq_start,

	.next  = sctp_eps_seq_next,

	.stop  = sctp_eps_seq_stop,

	.show  = sctp_eps_seq_show,

};





/* Initialize the seq file operations for 'eps' object. */

static int sctp_eps_seq_open(struct inode *inode, struct file *file)

{

	return single_open(file, sctp_eps_seq_show, NULL);

	return seq_open(file, &sctp_eps_ops);

}



static struct file_operations sctp_eps_seq_fops = {

	.open	 = sctp_eps_seq_open,

	.read	 = seq_read,

	.llseek	 = seq_lseek,

	.release = single_release,

	.release = seq_release,

};



/* Set up the proc fs entry for 'eps' object. */
@@ -221,6 +281,40 @@ void sctp_eps_proc_exit(void) 
	remove_proc_entry("eps", proc_net_sctp);

}





static void * sctp_assocs_seq_start(struct seq_file *seq, loff_t *pos)

{

	if (*pos > sctp_assoc_hashsize)

		return NULL;



	if (*pos < 0)

		*pos = 0;



	if (*pos == 0)

		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;

}



static void sctp_assocs_seq_stop(struct seq_file *seq, void *v)

{

	return;

}





static void * sctp_assocs_seq_next(struct seq_file *seq, void *v, loff_t *pos)

{

	if (*pos > sctp_assoc_hashsize)

		return NULL;



	++*pos;



	return pos;

}



/* Display sctp associations (/proc/net/sctp/assocs). */

static int sctp_assocs_seq_show(struct seq_file *seq, void *v)

{
@@ -228,43 +322,57 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) 
	struct sctp_ep_common *epb;

	struct sctp_association *assoc;

	struct sock *sk;

	int hash;

	int    hash = *(int *)v;



	seq_printf(seq, " ASSOC     SOCK   STY SST ST HBKT LPORT RPORT "

			"LADDRS <-> RADDRS\n");

	for (hash = 0; hash < sctp_assoc_hashsize; hash++) {

		head = &sctp_assoc_hashtable[hash];

	if (hash > sctp_assoc_hashsize)

		return -ENOMEM;



	head = &sctp_assoc_hashtable[hash-1];

	sctp_local_bh_disable();

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

		assoc = sctp_assoc(epb);

		sk = epb->sk;

		seq_printf(seq,

				   "%8p %8p %-3d %-3d %-2d %-4d %-5d %-5d ",

			   "%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, epb->bind_addr.port,

			   assoc->state, hash-1, assoc->assoc_id,

			   (sk->sk_rcvbuf - assoc->rwnd),

			   assoc->sndbuf_used,

			   sock_i_uid(sk), sock_i_ino(sk),

			   epb->bind_addr.port,

			   assoc->peer.port);



		seq_printf(seq, " ");

		sctp_seq_dump_local_addrs(seq, epb);

		seq_printf(seq, "<-> ");

		sctp_seq_dump_remote_addrs(seq, assoc);

		seq_printf(seq, "\n");

	}

	read_unlock(&head->lock);

	}

	sctp_local_bh_enable();



	return 0;

}



static struct seq_operations sctp_assoc_ops = {

	.start = sctp_assocs_seq_start,

	.next  = sctp_assocs_seq_next,

	.stop  = sctp_assocs_seq_stop,

	.show  = sctp_assocs_seq_show,

};



/* Initialize the seq file operations for 'assocs' object. */

static int sctp_assocs_seq_open(struct inode *inode, struct file *file)

{

	return single_open(file, sctp_assocs_seq_show, NULL);

	return seq_open(file, &sctp_assoc_ops);

}



static struct file_operations sctp_assocs_seq_fops = {

	.open	 = sctp_assocs_seq_open,

	.read	 = seq_read,

	.llseek	 = seq_lseek,

	.release = single_release,

	.release = seq_release,

};



/* Set up the proc fs entry for 'assocs' object. */