From: Pavel Emelyanov <xemul@parallels•com>
To: David Miller <davem@davemloft•net>,
Linux Netdev List <netdev@vger•kernel.org>
Subject: [PATCH 12/13] udp_diag: Implement the dump-all functionality
Date: Fri, 09 Dec 2011 20:24:21 +0400 [thread overview]
Message-ID: <4EE23635.6030504@parallels.com> (raw)
In-Reply-To: <4EE23561.5020804@parallels.com>
Do the same as TCP does -- iterate the given udp_table, filter
sockets with bytecode and dump sockets into reply message.
The same filtering as for TCP applies, though only some of the
state bits really matter.
Signed-off-by: Pavel Emelyanov <xemul@parallels•com>
---
net/ipv4/udp_diag.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index 3938aef..3447634 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -18,6 +18,17 @@
#include <linux/inet_diag.h>
#include <linux/sock_diag.h>
+static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
+ struct netlink_callback *cb, struct inet_diag_req *req,
+ struct nlattr *bc)
+{
+ if (!inet_diag_bc_sk(bc, sk))
+ return 0;
+
+ return inet_sk_diag_fill(sk, NULL, skb, req, NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh);
+}
+
static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb,
const struct nlmsghdr *nlh, struct inet_diag_req *req)
{
@@ -77,6 +88,49 @@ out_nosk:
static void udp_dump(struct udp_table *table, struct sk_buff *skb, struct netlink_callback *cb,
struct inet_diag_req *r, struct nlattr *bc)
{
+ int num, s_num, slot, s_slot;
+
+ s_slot = cb->args[0];
+ num = s_num = cb->args[1];
+
+ for (slot = s_slot; slot <= table->mask; num = s_num = 0, slot++) {
+ struct sock *sk;
+ struct hlist_nulls_node *node;
+ struct udp_hslot *hslot = &table->hash[slot];
+
+ if (hlist_nulls_empty(&hslot->head))
+ continue;
+
+ spin_lock_bh(&hslot->lock);
+ sk_nulls_for_each(sk, node, &hslot->head) {
+ struct inet_sock *inet = inet_sk(sk);
+
+ if (num < s_num)
+ goto next;
+ if (!(r->idiag_states & (1 << sk->sk_state)))
+ goto next;
+ if (r->sdiag_family != AF_UNSPEC &&
+ sk->sk_family != r->sdiag_family)
+ goto next;
+ if (r->id.idiag_sport != inet->inet_sport &&
+ r->id.idiag_sport)
+ goto next;
+ if (r->id.idiag_dport != inet->inet_dport &&
+ r->id.idiag_dport)
+ goto next;
+
+ if (sk_diag_dump(sk, skb, cb, r, bc) < 0) {
+ spin_unlock_bh(&hslot->lock);
+ goto done;
+ }
+next:
+ num++;
+ }
+ spin_unlock_bh(&hslot->lock);
+ }
+done:
+ cb->args[0] = slot;
+ cb->args[1] = num;
}
static void udp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
--
1.5.5.6
next prev parent reply other threads:[~2011-12-09 16:24 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-09 16:20 [PATCH 0/13] Implement dumping udp sockets via sock_diag netlink Pavel Emelyanov
2011-12-09 16:21 ` [PATCH 1/13] inet_diag: Remove indirect sizeof from inet diag handlers Pavel Emelyanov
2011-12-09 16:21 ` [PATCH 2/13] inet_diag: Reduce the number of args for bytecode run routine Pavel Emelyanov
2011-12-09 16:21 ` [PATCH 3/13] inet_diag: Export inet diag cookie checking routine Pavel Emelyanov
2011-12-09 16:22 ` [PATCH 4/13] inet_diag: Split inet_diag_get_exact into parts Pavel Emelyanov
2011-12-09 16:22 ` [PATCH 5/13] " Pavel Emelyanov
2011-12-09 16:22 ` [PATCH 6/13] inet_diag: Introduce the byte-code run on an inet socket Pavel Emelyanov
2011-12-09 16:23 ` [PATCH 7/13] inet_diag: Introduce the inet socket dumping routine Pavel Emelyanov
2011-12-09 16:23 ` [PATCH 8/13] inet_diag: Generalize inet_diag dump and get_exact calls Pavel Emelyanov
2011-12-09 16:23 ` [PATCH 9/13] udp: Export code sk lookup routines Pavel Emelyanov
2011-12-09 16:23 ` [PATCH 10/13] udp_diag: Basic skeleton Pavel Emelyanov
2011-12-09 16:24 ` [PATCH 11/13] udp_diag: Implement the get_exact dumping functionality Pavel Emelyanov
2011-12-09 21:48 ` Eric Dumazet
2011-12-10 9:07 ` Pavel Emelyanov
2011-12-10 9:33 ` [PATCH 1/2] udp_diag: Make it module when ipv6 is a module Pavel Emelyanov
2011-12-10 9:35 ` [PATCH 2/2] udp_diag: Fix the !ipv6 case Pavel Emelyanov
2011-12-10 11:02 ` Eric Dumazet
2011-12-10 18:15 ` David Miller
2011-12-10 19:48 ` [PATCH net-next] net: use IS_ENABLED(CONFIG_IPV6) Eric Dumazet
2011-12-10 22:00 ` [PATCH net-next] drivers/net: " Joe Perches
2011-12-10 22:29 ` Eric Dumazet
2011-12-11 0:51 ` Joe Perches
2011-12-11 8:52 ` Eric Dumazet
2011-12-13 0:06 ` Joe Perches
2011-12-11 23:34 ` [PATCH net-next] net: " David Miller
2011-12-10 11:00 ` [PATCH 1/2] udp_diag: Make it module when ipv6 is a module Eric Dumazet
2011-12-10 18:15 ` David Miller
2011-12-09 16:24 ` Pavel Emelyanov [this message]
2011-12-09 16:24 ` [PATCH 13/13] udp_diag: Wire the udp_diag module into kbuild Pavel Emelyanov
2011-12-09 16:26 ` [PATCH] iproute: Dump UDP sockets via netlink Pavel Emelyanov
2011-12-09 19:19 ` [PATCH 0/13] Implement dumping udp sockets via sock_diag netlink David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4EE23635.6030504@parallels.com \
--to=xemul@parallels$(echo .)com \
--cc=davem@davemloft$(echo .)net \
--cc=netdev@vger$(echo .)kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox