From: Wei Yongjun <yjwei@cn•fujitsu.com>
To: David Miller <davem@davemloft•net>
Cc: "netdev@vger•kernel.org" <netdev@vger•kernel.org>,
lksctp <linux-sctp@vger•kernel.org>
Subject: [PATCH net-next-2.6 1/3] sctp: implement socket option SCTP_GET_ASSOC_ID_LIST
Date: Mon, 18 Apr 2011 11:27:08 +0800 [thread overview]
Message-ID: <4DABAF8C.9070709@cn.fujitsu.com> (raw)
In-Reply-To: <4DABAEF1.1010506@cn.fujitsu.com>
This patch Implement socket option SCTP_GET_ASSOC_ID_LIST.
SCTP Socket API Extension:
8.2.6. Get the Current Identifiers of Associations
(SCTP_GET_ASSOC_ID_LIST)
This option gets the current list of SCTP association identifiers of
the SCTP associations handled by a one-to-many style socket.
Signed-off-by: Wei Yongjun <yjwei@cn•fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp•com>
---
include/net/sctp/user.h | 13 +++++++++++
net/sctp/socket.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 65 insertions(+), 0 deletions(-)
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index e73ebda..793617e 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -91,6 +91,7 @@ typedef __s32 sctp_assoc_t;
#define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */
#define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */
#define SCTP_GET_ASSOC_NUMBER 28 /* Read only */
+#define SCTP_GET_ASSOC_ID_LIST 29 /* Read only */
/* Internal Socket Options. Some of the sctp library functions are
* implemented using these socket options.
@@ -669,6 +670,18 @@ struct sctp_authchunks {
};
/*
+ * 8.2.6. Get the Current Identifiers of Associations
+ * (SCTP_GET_ASSOC_ID_LIST)
+ *
+ * This option gets the current list of SCTP association identifiers of
+ * the SCTP associations handled by a one-to-many style socket.
+ */
+struct sctp_assoc_ids {
+ __u32 gaids_number_of_ids;
+ sctp_assoc_t gaids_assoc_id[];
+};
+
+/*
* 8.3, 8.5 get all peer/local addresses in an association.
* This parameter struct is used by SCTP_GET_PEER_ADDRS and
* SCTP_GET_LOCAL_ADDRS socket options used internally to implement
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index deb82e3..7bdeae7 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -5283,6 +5283,55 @@ static int sctp_getsockopt_assoc_number(struct sock *sk, int len,
return 0;
}
+/*
+ * 8.2.6. Get the Current Identifiers of Associations
+ * (SCTP_GET_ASSOC_ID_LIST)
+ *
+ * This option gets the current list of SCTP association identifiers of
+ * the SCTP associations handled by a one-to-many style socket.
+ */
+static int sctp_getsockopt_assoc_ids(struct sock *sk, int len,
+ char __user *optval, int __user *optlen)
+{
+ struct sctp_sock *sp = sctp_sk(sk);
+ struct sctp_association *asoc;
+ struct sctp_assoc_ids *ids;
+ u32 num = 0;
+
+ if (sctp_style(sk, TCP))
+ return -EOPNOTSUPP;
+
+ if (len < sizeof(struct sctp_assoc_ids))
+ return -EINVAL;
+
+ list_for_each_entry(asoc, &(sp->ep->asocs), asocs) {
+ num++;
+ }
+
+ if (len < sizeof(struct sctp_assoc_ids) + sizeof(sctp_assoc_t) * num)
+ return -EINVAL;
+
+ len = sizeof(struct sctp_assoc_ids) + sizeof(sctp_assoc_t) * num;
+
+ ids = kmalloc(len, GFP_KERNEL);
+ if (unlikely(!ids))
+ return -ENOMEM;
+
+ ids->gaids_number_of_ids = num;
+ num = 0;
+ list_for_each_entry(asoc, &(sp->ep->asocs), asocs) {
+ ids->gaids_assoc_id[num++] = asoc->assoc_id;
+ }
+
+ if (put_user(len, optlen) || copy_to_user(optval, ids, len)) {
+ kfree(ids);
+ return -EFAULT;
+ }
+
+ kfree(ids);
+ return 0;
+}
+
SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
@@ -5415,6 +5464,9 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
case SCTP_GET_ASSOC_NUMBER:
retval = sctp_getsockopt_assoc_number(sk, len, optval, optlen);
break;
+ case SCTP_GET_ASSOC_ID_LIST:
+ retval = sctp_getsockopt_assoc_ids(sk, len, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
--
1.6.5.2
next prev parent reply other threads:[~2011-04-18 3:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-18 3:24 [PATCH net-next-2.6 0/3] new SCTP sockets APIs Wei Yongjun
2011-04-18 3:27 ` Wei Yongjun [this message]
2011-04-18 3:28 ` [PATCH net-next-2.6 2/3] sctp: change auth event type name to SCTP_AUTHENTICATION_EVENT Wei Yongjun
2011-04-18 3:29 ` [PATCH net-next-2.6 3/3] sctp: implement event notification SCTP_SENDER_DRY_EVENT Wei Yongjun
2011-04-18 3:47 ` [PATCH net-next-2.6 0/3] new SCTP sockets APIs Shan Wei
2011-04-18 4:07 ` Wei Yongjun
2011-04-18 4:09 ` David Miller
2011-04-21 17:36 ` David Miller
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