Commit af88b52d authored by Hendrik Brueckner's avatar Hendrik Brueckner Committed by David S. Miller

af_iucv: sync sk shutdown flag if iucv path is quiesced

If the af_iucv communication partner quiesces the path to shutdown its
receive direction, provide a quiesce callback implementation to shutdown
the (local) send direction. This ensures that both sides are synchronized.
Signed-off-by: default avatarHendrik Brueckner <>
Signed-off-by: default avatarUrsula Braun <>
Signed-off-by: default avatarDavid S. Miller <>
parent 42e1b4c2
......@@ -54,6 +54,7 @@ static void iucv_callback_connack(struct iucv_path *, u8 ipuser[16]);
static int iucv_callback_connreq(struct iucv_path *, u8 ipvmid[8],
u8 ipuser[16]);
static void iucv_callback_connrej(struct iucv_path *, u8 ipuser[16]);
static void iucv_callback_shutdown(struct iucv_path *, u8 ipuser[16]);
static struct iucv_sock_list iucv_sk_list = {
.lock = __RW_LOCK_UNLOCKED(iucv_sk_list.lock),
......@@ -65,7 +66,8 @@ static struct iucv_handler af_iucv_handler = {
.path_complete = iucv_callback_connack,
.path_severed = iucv_callback_connrej,
.message_pending = iucv_callback_rx,
.message_complete = iucv_callback_txdone
.message_complete = iucv_callback_txdone,
.path_quiesced = iucv_callback_shutdown,
static inline void high_nmcpy(unsigned char *dst, char *src)
......@@ -1196,6 +1198,21 @@ static void iucv_callback_connrej(struct iucv_path *path, u8 ipuser[16])
/* called if the other communication side shuts down its RECV direction;
* in turn, the callback sets SEND_SHUTDOWN to disable sending of data.
static void iucv_callback_shutdown(struct iucv_path *path, u8 ipuser[16])
struct sock *sk = path->private;
if (sk->sk_state != IUCV_CLOSED) {
sk->sk_shutdown |= SEND_SHUTDOWN;
static struct proto_ops iucv_sock_ops = {
.family = PF_IUCV,
.owner = THIS_MODULE,
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