diff options
Diffstat (limited to '')
-rw-r--r-- | net/l2tp/l2tp_debugfs.c | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/net/l2tp/l2tp_debugfs.c b/net/l2tp/l2tp_debugfs.c index 35bb4f3bdbe0..4595b56d175d 100644 --- a/net/l2tp/l2tp_debugfs.c +++ b/net/l2tp/l2tp_debugfs.c @@ -1,6 +1,5 @@ // SPDX-License-Identifier: GPL-2.0-or-later -/* - * L2TP subsystem debugfs +/* L2TP subsystem debugfs * * Copyright (c) 2010 Katalix Systems Ltd */ @@ -33,7 +32,8 @@ static struct dentry *rootdir; struct l2tp_dfs_seq_data { - struct net *net; + struct net *net; + netns_tracker ns_tracker; int tunnel_idx; /* current tunnel */ int session_idx; /* index of session within current tunnel */ struct l2tp_tunnel *tunnel; @@ -59,11 +59,10 @@ static void l2tp_dfs_next_session(struct l2tp_dfs_seq_data *pd) pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx); pd->session_idx++; - if (pd->session == NULL) { + if (!pd->session) { pd->session_idx = 0; l2tp_dfs_next_tunnel(pd); } - } static void *l2tp_dfs_seq_start(struct seq_file *m, loff_t *offs) @@ -74,23 +73,25 @@ static void *l2tp_dfs_seq_start(struct seq_file *m, loff_t *offs) if (!pos) goto out; - BUG_ON(m->private == NULL); + if (WARN_ON(!m->private)) { + pd = NULL; + goto out; + } pd = m->private; - if (pd->tunnel == NULL) + if (!pd->tunnel) l2tp_dfs_next_tunnel(pd); else l2tp_dfs_next_session(pd); /* NULL tunnel and session indicates end of list */ - if ((pd->tunnel == NULL) && (pd->session == NULL)) + if (!pd->tunnel && !pd->session) pd = NULL; out: return pd; } - static void *l2tp_dfs_seq_next(struct seq_file *m, void *v, loff_t *pos) { (*pos)++; @@ -120,24 +121,21 @@ static void l2tp_dfs_seq_stop(struct seq_file *p, void *v) static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v) { struct l2tp_tunnel *tunnel = v; + struct l2tp_session *session; int session_count = 0; int hash; - struct hlist_node *walk; - struct hlist_node *tmp; - read_lock_bh(&tunnel->hlist_lock); + rcu_read_lock_bh(); for (hash = 0; hash < L2TP_HASH_SIZE; hash++) { - hlist_for_each_safe(walk, tmp, &tunnel->session_hlist[hash]) { - struct l2tp_session *session; - - session = hlist_entry(walk, struct l2tp_session, hlist); + hlist_for_each_entry_rcu(session, &tunnel->session_hlist[hash], hlist) { + /* Session ID of zero is a dummy/reserved value used by pppol2tp */ if (session->session_id == 0) continue; session_count++; } } - read_unlock_bh(&tunnel->hlist_lock); + rcu_read_unlock_bh(); seq_printf(m, "\nTUNNEL %u peer %u", tunnel->tunnel_id, tunnel->peer_tunnel_id); if (tunnel->sock) { @@ -148,11 +146,13 @@ static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v) const struct ipv6_pinfo *np = inet6_sk(tunnel->sock); seq_printf(m, " from %pI6c to %pI6c\n", - &np->saddr, &tunnel->sock->sk_v6_daddr); - } else + &np->saddr, &tunnel->sock->sk_v6_daddr); + } #endif - seq_printf(m, " from %pI4 to %pI4\n", - &inet->inet_saddr, &inet->inet_daddr); + if (tunnel->sock->sk_family == AF_INET) + seq_printf(m, " from %pI4 to %pI4\n", + &inet->inet_saddr, &inet->inet_daddr); + if (tunnel->encap == L2TP_ENCAPTYPE_UDP) seq_printf(m, " source port %hu, dest port %hu\n", ntohs(inet->inet_sport), ntohs(inet->inet_dport)); @@ -165,7 +165,7 @@ static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v) tunnel->sock ? refcount_read(&tunnel->sock->sk_refcnt) : 0, refcount_read(&tunnel->ref_count)); seq_printf(m, " %08x rx %ld/%ld/%ld rx %ld/%ld/%ld\n", - tunnel->debug, + 0, atomic_long_read(&tunnel->stats.tx_packets), atomic_long_read(&tunnel->stats.tx_bytes), atomic_long_read(&tunnel->stats.tx_errors), @@ -184,15 +184,15 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) session->pwtype == L2TP_PWTYPE_PPP ? "PPP" : ""); if (session->send_seq || session->recv_seq) - seq_printf(m, " nr %hu, ns %hu\n", session->nr, session->ns); + seq_printf(m, " nr %u, ns %u\n", session->nr, session->ns); seq_printf(m, " refcnt %d\n", refcount_read(&session->ref_count)); seq_printf(m, " config 0/0/%c/%c/-/%s %08x %u\n", session->recv_seq ? 'R' : '-', session->send_seq ? 'S' : '-', session->lns_mode ? "LNS" : "LAC", - session->debug, + 0, jiffies_to_msecs(session->reorder_timeout)); - seq_printf(m, " offset 0 l2specific %hu/%hu\n", + seq_printf(m, " offset 0 l2specific %hu/%d\n", session->l2specific_type, l2tp_get_l2specific_len(session)); if (session->cookie_len) { seq_printf(m, " cookie %02x%02x%02x%02x", @@ -202,7 +202,7 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) seq_printf(m, "%02x%02x%02x%02x", session->cookie[4], session->cookie[5], session->cookie[6], session->cookie[7]); - seq_printf(m, "\n"); + seq_puts(m, "\n"); } if (session->peer_cookie_len) { seq_printf(m, " peer cookie %02x%02x%02x%02x", @@ -212,10 +212,10 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) seq_printf(m, "%02x%02x%02x%02x", session->peer_cookie[4], session->peer_cookie[5], session->peer_cookie[6], session->peer_cookie[7]); - seq_printf(m, "\n"); + seq_puts(m, "\n"); } - seq_printf(m, " %hu/%hu tx %ld/%ld/%ld rx %ld/%ld/%ld\n", + seq_printf(m, " %u/%u tx %ld/%ld/%ld rx %ld/%ld/%ld\n", session->nr, session->ns, atomic_long_read(&session->stats.tx_packets), atomic_long_read(&session->stats.tx_bytes), @@ -224,7 +224,7 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) atomic_long_read(&session->stats.rx_bytes), atomic_long_read(&session->stats.rx_errors)); - if (session->show != NULL) + if (session->show) session->show(m, session); } @@ -271,7 +271,7 @@ static int l2tp_dfs_seq_open(struct inode *inode, struct file *file) int rc = -ENOMEM; pd = kzalloc(sizeof(*pd), GFP_KERNEL); - if (pd == NULL) + if (!pd) goto out; /* Derive the network namespace from the pid opening the @@ -282,7 +282,7 @@ static int l2tp_dfs_seq_open(struct inode *inode, struct file *file) rc = PTR_ERR(pd->net); goto err_free_pd; } - + netns_tracker_alloc(pd->net, &pd->ns_tracker, GFP_KERNEL); rc = seq_open(file, &l2tp_dfs_seq_ops); if (rc) goto err_free_net; @@ -294,7 +294,7 @@ out: return rc; err_free_net: - put_net(pd->net); + put_net_track(pd->net, &pd->ns_tracker); err_free_pd: kfree(pd); goto out; @@ -308,7 +308,7 @@ static int l2tp_dfs_seq_release(struct inode *inode, struct file *file) seq = file->private_data; pd = seq->private; if (pd->net) - put_net(pd->net); + put_net_track(pd->net, &pd->ns_tracker); kfree(pd); seq_release(inode, file); |