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-rw-r--r--include/net/iucv/af_iucv.h2
-rw-r--r--net/iucv/af_iucv.c27
2 files changed, 27 insertions, 2 deletions
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index b57739e49dc1..21ee49ffcbaf 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -74,10 +74,12 @@ struct iucv_sock {
struct sock_msg_q message_q;
unsigned int send_tag;
u8 flags;
+ u16 msglimit;
};
/* iucv socket options (SOL_IUCV) */
#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
+#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
/* iucv related control messages (scm) */
#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index f0dea1b8ed4b..264c6b36931c 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -268,6 +268,7 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio)
skb_queue_head_init(&iucv_sk(sk)->backlog_skb_q);
iucv_sk(sk)->send_tag = 0;
iucv_sk(sk)->flags = 0;
+ iucv_sk(sk)->msglimit = IUCV_QUEUELEN_DEFAULT;
sk->sk_destruct = iucv_sock_destruct;
sk->sk_sndtimeo = IUCV_CONN_TIMEOUT;
@@ -536,7 +537,7 @@ static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
iucv = iucv_sk(sk);
/* Create path. */
- iucv->path = iucv_path_alloc(IUCV_QUEUELEN_DEFAULT,
+ iucv->path = iucv_path_alloc(iucv->msglimit,
IUCV_IPRMDATA, GFP_KERNEL);
if (!iucv->path) {
err = -ENOMEM;
@@ -1219,6 +1220,20 @@ static int iucv_sock_setsockopt(struct socket *sock, int level, int optname,
else
iucv->flags &= ~IUCV_IPRMDATA;
break;
+ case SO_MSGLIMIT:
+ switch (sk->sk_state) {
+ case IUCV_OPEN:
+ case IUCV_BOUND:
+ if (val < 1 || val > (u16)(~0))
+ rc = -EINVAL;
+ else
+ iucv->msglimit = val;
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+ break;
default:
rc = -ENOPROTOOPT;
break;
@@ -1250,6 +1265,12 @@ static int iucv_sock_getsockopt(struct socket *sock, int level, int optname,
case SO_IPRMDATA_MSG:
val = (iucv->flags & IUCV_IPRMDATA) ? 1 : 0;
break;
+ case SO_MSGLIMIT:
+ lock_sock(sk);
+ val = (iucv->path != NULL) ? iucv->path->msglim /* connected */
+ : iucv->msglimit; /* default */
+ release_sock(sk);
+ break;
default:
return -ENOPROTOOPT;
}
@@ -1339,7 +1360,9 @@ static int iucv_callback_connreq(struct iucv_path *path,
memcpy(nuser_data + 8, niucv->src_name, 8);
ASCEBC(nuser_data + 8, 8);
- path->msglim = IUCV_QUEUELEN_DEFAULT;
+ /* set message limit for path based on msglimit of accepting socket */
+ niucv->msglimit = iucv->msglimit;
+ path->msglim = iucv->msglimit;
err = iucv_path_accept(path, &af_iucv_handler, nuser_data, nsk);
if (err) {
err = iucv_path_sever(path, user_data);