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RDMA/cxgb4: Disable interrupts in c4iw_ev_dispatch()

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Use GFP_ATOMIC in _insert_handle() if ints are disabled.

Don't panic if we get an abort with no endpoint found.  Just log a
warning.

Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Vipul Pandya 2012-05-18 15:29:29 +05:30 committed by Roland Dreier
parent 2c97478106
commit 4984037bef
3 changed files with 9 additions and 6 deletions
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5
drivers/infiniband/hw/cxgb4/cm.c
View file

@ -1362,7 +1362,10 @@ 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);
if (!ep) {
printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
return 0;
}
mutex_lock(&ep->com.mutex);
switch (ep->com.state) {
case ABORTING:

8
drivers/infiniband/hw/cxgb4/ev.c
View file

@ -84,7 +84,7 @@ void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
struct c4iw_qp *qhp;
u32 cqid;
spin_lock(&dev->lock);
spin_lock_irq(&dev->lock);
qhp = get_qhp(dev, CQE_QPID(err_cqe));
if (!qhp) {
printk(KERN_ERR MOD "BAD AE qpid 0x%x opcode %d "
@ -93,7 +93,7 @@ void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
CQE_WRID_LOW(err_cqe));
spin_unlock(&dev->lock);
spin_unlock_irq(&dev->lock);
goto out;
}
@ -109,13 +109,13 @@ void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe),
CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe),
CQE_WRID_LOW(err_cqe));
spin_unlock(&dev->lock);
spin_unlock_irq(&dev->lock);
goto out;
}
c4iw_qp_add_ref(&qhp->ibqp);
atomic_inc(&chp->refcnt);
spin_unlock(&dev->lock);
spin_unlock_irq(&dev->lock);
/* Bad incoming write */
if (RQ_TYPE(err_cqe) &&

2
drivers/infiniband/hw/cxgb4/iw_cxgb4.h
View file

@ -246,7 +246,7 @@ static inline int _insert_handle(struct c4iw_dev *rhp, struct idr *idr,
int newid;
do {
if (!idr_pre_get(idr, GFP_KERNEL))
if (!idr_pre_get(idr, lock ? GFP_KERNEL : GFP_ATOMIC))
return -ENOMEM;
if (lock)
spin_lock_irq(&rhp->lock);