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Message-ID: <20160307143834.18567.84577.stgit@warthog.procyon.org.uk>
Date: Mon, 07 Mar 2016 14:38:34 +0000
From: David Howells <dhowells@...hat.com>
To: linux-afs@...ts.infradead.org
Cc: dhowells@...hat.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 05/11] rxrpc: procfs file to list local endpoints
Add a proc file to list local rxrpc endpoints using the object cache
facility to do much of the work.
Signed-off-by: David Howells <dhowells@...hat.com>
---
net/rxrpc/af_rxrpc.c | 3 +++
net/rxrpc/local-object.c | 29 +++++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index a27d8e3ef854..23ebb127cac1 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -842,6 +842,8 @@ static int __init af_rxrpc_init(void)
proc_create("rxrpc_calls", 0, init_net.proc_net, &rxrpc_call_seq_fops);
proc_create("rxrpc_conns", 0, init_net.proc_net,
&rxrpc_connection_seq_fops);
+ proc_create_data("rxrpc_locals", 0, init_net.proc_net,
+ &objcache_seq_fops, &rxrpc_local_cache);
#endif
return 0;
@@ -883,6 +885,7 @@ static void __exit af_rxrpc_exit(void)
_debug("flush scheduled work");
flush_workqueue(rxrpc_workqueue);
+ remove_proc_entry("rxrpc_locals", init_net.proc_net);
remove_proc_entry("rxrpc_conns", init_net.proc_net);
remove_proc_entry("rxrpc_calls", init_net.proc_net);
destroy_workqueue(rxrpc_workqueue);
diff --git a/net/rxrpc/local-object.c b/net/rxrpc/local-object.c
index 4f44e86e70fe..cc6354675026 100644
--- a/net/rxrpc/local-object.c
+++ b/net/rxrpc/local-object.c
@@ -19,6 +19,7 @@
#include <net/af_rxrpc.h>
#include "ar-internal.h"
+static int rxrpc_local_seq_show(struct seq_file *, void *);
static void rxrpc_local_prepare_for_gc(struct obj_node *);
static void rxrpc_local_gc_rcu(struct rcu_head *);
static unsigned long rxrpc_local_hash_key(const void *);
@@ -29,6 +30,7 @@ static struct hlist_head rxrpc_local_cache_hash[16];
struct objcache rxrpc_local_cache = {
.name = "locals",
+ .seq_show = rxrpc_local_seq_show,
.prepare_for_gc = rxrpc_local_prepare_for_gc,
.gc_rcu = rxrpc_local_gc_rcu,
.hash_key = rxrpc_local_hash_key,
@@ -309,3 +311,30 @@ static void rxrpc_local_gc_rcu(struct rcu_head *rcu)
objcache_obj_rcu_done(&rxrpc_local_cache);
_leave("");
}
+
+/*
+ * Display a local endpoint in /proc/net/rxrpc_locals.
+ */
+static int rxrpc_local_seq_show(struct seq_file *seq, void *v)
+{
+ struct rxrpc_local *local;
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "Use Proto LPort Local\n");
+ return 0;
+ }
+
+ local = hlist_entry(v, struct rxrpc_local, obj.link);
+
+ switch (local->srx.transport.family) {
+ case AF_INET:
+ seq_printf(seq,
+ "%3d UDP %5hu %pI4\n",
+ atomic_read(&local->obj.usage),
+ ntohs(local->srx.transport.sin.sin_port),
+ &local->srx.transport.sin.sin_addr);
+ break;
+ }
+
+ return 0;
+}
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