lkml.org 
[lkml]   [2016]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH 09/11] rxrpc: Add /proc/net/rxrpc_peers to display the known remote endpoints
From
Date
Add /proc/net/rxrpc_peers to display the remote endpoint records that are
resident in the peer cache.

Signed-off-by: David Howells <dhowells@redhat.com>
---

net/rxrpc/af_rxrpc.c | 3 +++
net/rxrpc/peer-object.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)

diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 5f0ffb5f8306..b1849c4e3fd3 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -845,6 +845,8 @@ static int __init af_rxrpc_init(void)
&rxrpc_connection_seq_fops);
proc_create_data("rxrpc_locals", 0, init_net.proc_net,
&objcache_seq_fops, &rxrpc_local_cache);
+ proc_create_data("rxrpc_peers", 0, init_net.proc_net,
+ &objcache_seq_fops, &rxrpc_peer_cache);
#endif
return 0;

@@ -887,6 +889,7 @@ static void __exit af_rxrpc_exit(void)

_debug("flush scheduled work");
flush_workqueue(rxrpc_workqueue);
+ remove_proc_entry("rxrpc_peers", init_net.proc_net);
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);
diff --git a/net/rxrpc/peer-object.c b/net/rxrpc/peer-object.c
index 35157c659bf7..2dd8c241302d 100644
--- a/net/rxrpc/peer-object.c
+++ b/net/rxrpc/peer-object.c
@@ -21,6 +21,7 @@
#include <net/route.h>
#include "ar-internal.h"

+static int rxrpc_peer_seq_show(struct seq_file *, void *);
static unsigned long rxrpc_peer_hash_key(const void *);
static int rxrpc_peer_cmp_key(const struct obj_node *, const void *);
static void rxrpc_peer_gc_rcu(struct rcu_head *);
@@ -29,6 +30,7 @@ static struct hlist_head rxrpc_peer_cache_hash[256];

struct objcache rxrpc_peer_cache = {
.name = "peers",
+ .seq_show = rxrpc_peer_seq_show,
.gc_rcu = rxrpc_peer_gc_rcu,
.hash_key = rxrpc_peer_hash_key,
.cmp_key = rxrpc_peer_cmp_key,
@@ -261,3 +263,33 @@ struct rxrpc_peer *rxrpc_lookup_peer(struct sockaddr_rxrpc *srx, gfp_t gfp)
_leave(" = %p {u=%d}", peer, usage);
return peer;
}
+
+/*
+ * Display a remote endpoint in /proc/net/rxrpc_peers.
+ */
+static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
+{
+ struct rxrpc_peer *peer;
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(seq, "Use SvID Proto MTU RTT RPort Remote\n");
+ return 0;
+ }
+
+ peer = hlist_entry(v, struct rxrpc_peer, obj.link);
+
+ switch (peer->srx.transport.family) {
+ case AF_INET:
+ seq_printf(seq,
+ "%3d %4x UDP %5u %5lu %5hu %pI4\n",
+ atomic_read(&peer->obj.usage),
+ peer->srx.srx_service,
+ peer->mtu,
+ peer->rtt,
+ ntohs(peer->srx.transport.sin.sin_port),
+ &peer->srx.transport.sin.sin_addr);
+ break;
+ }
+
+ return 0;
+}
\
 
 \ /
  Last update: 2016-03-07 16:21    [W:0.775 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site