From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753110AbcCGOkS (ORCPT ); Mon, 7 Mar 2016 09:40:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:40637 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753037AbcCGOjE (ORCPT ); Mon, 7 Mar 2016 09:39:04 -0500 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 09/11] rxrpc: Add /proc/net/rxrpc_peers to display the known remote endpoints From: David Howells To: linux-afs@lists.infradead.org Cc: dhowells@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 07 Mar 2016 14:39:02 +0000 Message-ID: <20160307143902.18567.80508.stgit@warthog.procyon.org.uk> In-Reply-To: <20160307143759.18567.8234.stgit@warthog.procyon.org.uk> References: <20160307143759.18567.8234.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add /proc/net/rxrpc_peers to display the remote endpoint records that are resident in the peer cache. Signed-off-by: David Howells --- 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 #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; +}