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-rw-r--r--include/net/iucv/af_iucv.h1
-rw-r--r--net/iucv/af_iucv.c79
2 files changed, 53 insertions, 27 deletions
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 2e1d5ecc2d1b..cc7c19732389 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -62,6 +62,7 @@ struct sock_msg_q {
#define AF_IUCV_FLAG_SYN 0x2
#define AF_IUCV_FLAG_FIN 0x4
#define AF_IUCV_FLAG_WIN 0x8
+#define AF_IUCV_FLAG_SHT 0x10
struct af_iucv_trans_hdr {
u16 magic;
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 31537c5eb17e..07d7d55a1b93 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -165,8 +165,6 @@ static int afiucv_pm_freeze(struct device *dev)
read_lock(&iucv_sk_list.lock);
sk_for_each(sk, node, &iucv_sk_list.head) {
iucv = iucv_sk(sk);
- skb_queue_purge(&iucv->send_skb_q);
- skb_queue_purge(&iucv->backlog_skb_q);
switch (sk->sk_state) {
case IUCV_DISCONN:
case IUCV_CLOSING:
@@ -405,7 +403,19 @@ static struct sock *__iucv_get_sock_by_name(char *nm)
static void iucv_sock_destruct(struct sock *sk)
{
skb_queue_purge(&sk->sk_receive_queue);
- skb_queue_purge(&sk->sk_write_queue);
+ skb_queue_purge(&sk->sk_error_queue);
+
+ sk_mem_reclaim(sk);
+
+ if (!sock_flag(sk, SOCK_DEAD)) {
+ pr_err("Attempt to release alive iucv socket %p\n", sk);
+ return;
+ }
+
+ WARN_ON(atomic_read(&sk->sk_rmem_alloc));
+ WARN_ON(atomic_read(&sk->sk_wmem_alloc));
+ WARN_ON(sk->sk_wmem_queued);
+ WARN_ON(sk->sk_forward_alloc);
}
/* Cleanup Listen */
@@ -1342,6 +1352,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
rlen = skb->len; /* real length of skb */
copied = min_t(unsigned int, rlen, len);
+ if (!rlen)
+ sk->sk_shutdown = sk->sk_shutdown | RCV_SHUTDOWN;
cskb = skb;
if (skb_copy_datagram_iovec(cskb, 0, msg->msg_iov, copied)) {
@@ -1493,42 +1505,47 @@ static int iucv_sock_shutdown(struct socket *sock, int how)
lock_sock(sk);
switch (sk->sk_state) {
+ case IUCV_LISTEN:
case IUCV_DISCONN:
case IUCV_CLOSING:
case IUCV_CLOSED:
err = -ENOTCONN;
goto fail;
-
default:
- sk->sk_shutdown |= how;
break;
}
if (how == SEND_SHUTDOWN || how == SHUTDOWN_MASK) {
- txmsg.class = 0;
- txmsg.tag = 0;
- err = pr_iucv->message_send(iucv->path, &txmsg, IUCV_IPRMDATA,
- 0, (void *) iprm_shutdown, 8);
- if (err) {
- switch (err) {
- case 1:
- err = -ENOTCONN;
- break;
- case 2:
- err = -ECONNRESET;
- break;
- default:
- err = -ENOTCONN;
- break;
+ if (iucv->transport == AF_IUCV_TRANS_IUCV) {
+ txmsg.class = 0;
+ txmsg.tag = 0;
+ err = pr_iucv->message_send(iucv->path, &txmsg,
+ IUCV_IPRMDATA, 0, (void *) iprm_shutdown, 8);
+ if (err) {
+ switch (err) {
+ case 1:
+ err = -ENOTCONN;
+ break;
+ case 2:
+ err = -ECONNRESET;
+ break;
+ default:
+ err = -ENOTCONN;
+ break;
+ }
}
- }
+ } else
+ iucv_send_ctrl(sk, AF_IUCV_FLAG_SHT);
}
+ sk->sk_shutdown |= how;
if (how == RCV_SHUTDOWN || how == SHUTDOWN_MASK) {
- err = pr_iucv->path_quiesce(iucv->path, NULL);
- if (err)
- err = -ENOTCONN;
-
+ if (iucv->transport == AF_IUCV_TRANS_IUCV) {
+ err = pr_iucv->path_quiesce(iucv->path, NULL);
+ if (err)
+ err = -ENOTCONN;
+/* skb_queue_purge(&sk->sk_receive_queue); */
+ }
skb_queue_purge(&sk->sk_receive_queue);
}
@@ -2066,8 +2083,13 @@ static int afiucv_hs_callback_rx(struct sock *sk, struct sk_buff *skb)
return NET_RX_SUCCESS;
}
+ if (sk->sk_shutdown & RCV_SHUTDOWN) {
+ kfree_skb(skb);
+ return NET_RX_SUCCESS;
+ }
+
/* write stuff from iucv_msg to skb cb */
- if (skb->len <= sizeof(struct af_iucv_trans_hdr)) {
+ if (skb->len < sizeof(struct af_iucv_trans_hdr)) {
kfree_skb(skb);
return NET_RX_SUCCESS;
}
@@ -2173,7 +2195,10 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
kfree_skb(skb);
break;
}
- /* fall through */
+ /* fall through and receive non-zero length data */
+ case (AF_IUCV_FLAG_SHT):
+ /* shutdown request */
+ /* fall through and receive zero length data */
case 0:
/* plain data frame */
memcpy(CB_TRGCLS(skb), &trans_hdr->iucv_hdr.class,