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path: root/drivers/infiniband/hw/cxgb4/cm.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cm.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c87
1 files changed, 43 insertions, 44 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 6819ac4cbcbb..9b5c3e38e452 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -219,12 +219,11 @@ static void set_emss(struct c4iw_ep *ep, u16 opt)
static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
{
- unsigned long flags;
enum c4iw_ep_state state;
- spin_lock_irqsave(&epc->lock, flags);
+ mutex_lock(&epc->mutex);
state = epc->state;
- spin_unlock_irqrestore(&epc->lock, flags);
+ mutex_unlock(&epc->mutex);
return state;
}
@@ -235,12 +234,10 @@ static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
{
- unsigned long flags;
-
- spin_lock_irqsave(&epc->lock, flags);
+ mutex_lock(&epc->mutex);
PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]);
__state_set(epc, new);
- spin_unlock_irqrestore(&epc->lock, flags);
+ mutex_unlock(&epc->mutex);
return;
}
@@ -251,7 +248,7 @@ static void *alloc_ep(int size, gfp_t gfp)
epc = kzalloc(size, gfp);
if (epc) {
kref_init(&epc->kref);
- spin_lock_init(&epc->lock);
+ mutex_init(&epc->mutex);
c4iw_init_wr_wait(&epc->wr_wait);
}
PDBG("%s alloc ep %p\n", __func__, epc);
@@ -1131,7 +1128,6 @@ static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
{
struct c4iw_ep *ep;
struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
- unsigned long flags;
int release = 0;
unsigned int tid = GET_TID(rpl);
struct tid_info *t = dev->rdev.lldi.tids;
@@ -1139,7 +1135,7 @@ static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
ep = lookup_tid(t, tid);
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
BUG_ON(!ep);
- spin_lock_irqsave(&ep->com.lock, flags);
+ mutex_lock(&ep->com.mutex);
switch (ep->com.state) {
case ABORTING:
__state_set(&ep->com, DEAD);
@@ -1150,7 +1146,7 @@ static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
__func__, ep, ep->com.state);
break;
}
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
if (release)
release_ep_resources(ep);
@@ -1478,7 +1474,6 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
struct cpl_peer_close *hdr = cplhdr(skb);
struct c4iw_ep *ep;
struct c4iw_qp_attributes attrs;
- unsigned long flags;
int disconnect = 1;
int release = 0;
int closing = 0;
@@ -1489,7 +1484,7 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
dst_confirm(ep->dst);
- spin_lock_irqsave(&ep->com.lock, flags);
+ mutex_lock(&ep->com.mutex);
switch (ep->com.state) {
case MPA_REQ_WAIT:
__state_set(&ep->com, CLOSING);
@@ -1550,7 +1545,7 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
default:
BUG_ON(1);
}
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
if (closing) {
attrs.next_state = C4IW_QP_STATE_CLOSING;
c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
@@ -1581,7 +1576,6 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
struct c4iw_qp_attributes attrs;
int ret;
int release = 0;
- unsigned long flags;
struct tid_info *t = dev->rdev.lldi.tids;
unsigned int tid = GET_TID(req);
@@ -1591,9 +1585,17 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
ep->hwtid);
return 0;
}
- spin_lock_irqsave(&ep->com.lock, flags);
PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
ep->com.state);
+
+ /*
+ * Wake up any threads in rdma_init() or rdma_fini().
+ */
+ ep->com.wr_wait.done = 1;
+ ep->com.wr_wait.ret = -ECONNRESET;
+ wake_up(&ep->com.wr_wait.wait);
+
+ mutex_lock(&ep->com.mutex);
switch (ep->com.state) {
case CONNECTING:
break;
@@ -1605,23 +1607,8 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
connect_reply_upcall(ep, -ECONNRESET);
break;
case MPA_REP_SENT:
- ep->com.wr_wait.done = 1;
- ep->com.wr_wait.ret = -ECONNRESET;
- PDBG("waking up ep %p\n", ep);
- wake_up(&ep->com.wr_wait.wait);
break;
case MPA_REQ_RCVD:
-
- /*
- * We're gonna mark this puppy DEAD, but keep
- * the reference on it until the ULP accepts or
- * rejects the CR. Also wake up anyone waiting
- * in rdma connection migration (see c4iw_accept_cr()).
- */
- ep->com.wr_wait.done = 1;
- ep->com.wr_wait.ret = -ECONNRESET;
- PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
- wake_up(&ep->com.wr_wait.wait);
break;
case MORIBUND:
case CLOSING:
@@ -1644,7 +1631,7 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
break;
case DEAD:
PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
return 0;
default:
BUG_ON(1);
@@ -1655,7 +1642,7 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
__state_set(&ep->com, DEAD);
release = 1;
}
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
if (!rpl_skb) {
@@ -1681,7 +1668,6 @@ static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
struct c4iw_ep *ep;
struct c4iw_qp_attributes attrs;
struct cpl_close_con_rpl *rpl = cplhdr(skb);
- unsigned long flags;
int release = 0;
struct tid_info *t = dev->rdev.lldi.tids;
unsigned int tid = GET_TID(rpl);
@@ -1692,7 +1678,7 @@ static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
BUG_ON(!ep);
/* The cm_id may be null if we failed to connect */
- spin_lock_irqsave(&ep->com.lock, flags);
+ mutex_lock(&ep->com.mutex);
switch (ep->com.state) {
case CLOSING:
__state_set(&ep->com, MORIBUND);
@@ -1717,7 +1703,7 @@ static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
BUG_ON(1);
break;
}
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
if (release)
release_ep_resources(ep);
return 0;
@@ -2093,12 +2079,11 @@ done:
int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
{
int ret = 0;
- unsigned long flags;
int close = 0;
int fatal = 0;
struct c4iw_rdev *rdev;
- spin_lock_irqsave(&ep->com.lock, flags);
+ mutex_lock(&ep->com.mutex);
PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
states[ep->com.state], abrupt);
@@ -2145,7 +2130,7 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
break;
}
- spin_unlock_irqrestore(&ep->com.lock, flags);
+ mutex_unlock(&ep->com.mutex);
if (close) {
if (abrupt)
ret = abort_connection(ep, NULL, gfp);
@@ -2159,6 +2144,13 @@ int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
return ret;
}
+static int async_event(struct c4iw_dev *dev, struct sk_buff *skb)
+{
+ struct cpl_fw6_msg *rpl = cplhdr(skb);
+ c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
+ return 0;
+}
+
/*
* These are the real handlers that are called from a
* work queue.
@@ -2177,7 +2169,8 @@ static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
[CPL_ABORT_REQ_RSS] = peer_abort,
[CPL_CLOSE_CON_RPL] = close_con_rpl,
[CPL_RDMA_TERMINATE] = terminate,
- [CPL_FW4_ACK] = fw4_ack
+ [CPL_FW4_ACK] = fw4_ack,
+ [CPL_FW6_MSG] = async_event
};
static void process_timeout(struct c4iw_ep *ep)
@@ -2185,7 +2178,7 @@ static void process_timeout(struct c4iw_ep *ep)
struct c4iw_qp_attributes attrs;
int abort = 1;
- spin_lock_irq(&ep->com.lock);
+ mutex_lock(&ep->com.mutex);
PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
ep->com.state);
switch (ep->com.state) {
@@ -2212,7 +2205,7 @@ static void process_timeout(struct c4iw_ep *ep)
WARN_ON(1);
abort = 0;
}
- spin_unlock_irq(&ep->com.lock);
+ mutex_unlock(&ep->com.mutex);
if (abort)
abort_connection(ep, NULL, GFP_KERNEL);
c4iw_put_ep(&ep->com);
@@ -2296,6 +2289,7 @@ static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
"for tid %u\n", rpl->status, GET_TID(rpl));
}
+ kfree_skb(skb);
return 0;
}
@@ -2313,17 +2307,22 @@ static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
if (wr_waitp) {
- wr_waitp->ret = ret;
+ if (ret)
+ wr_waitp->ret = -ret;
+ else
+ wr_waitp->ret = 0;
wr_waitp->done = 1;
wake_up(&wr_waitp->wait);
}
+ kfree_skb(skb);
break;
case 2:
- c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
+ sched(dev, skb);
break;
default:
printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
rpl->type);
+ kfree_skb(skb);
break;
}
return 0;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.