[SCTP] Extend the info exported via /proc/net/sctp to support netstat for SCTP.
Signed-off-by: Vladislav Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index e42fd8c..98d49ec9 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -132,14 +132,25 @@
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 @@
{
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 @@
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];
- 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);
- sctp_seq_dump_local_addrs(seq, epb);
- seq_printf(seq, "\n");
- }
- read_unlock(&head->lock);
+ 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 %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 @@
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 @@
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];
- 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 ",
- assoc, sk, sctp_sk(sk)->type, sk->sk_state,
- assoc->state, hash, epb->bind_addr.port,
- assoc->peer.port);
- 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);
+ 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 %4d %8d %8d %7d %5lu %-5d %5d ",
+ assoc, sk, sctp_sk(sk)->type, sk->sk_state,
+ 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. */