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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-10-20 00:10:27 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-10-20 00:10:27 -0300
commitd0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch)
tree7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /drivers/infiniband/hw/cxgb4/cq.c
parente914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff)
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cq.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/cq.c52
1 files changed, 30 insertions, 22 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index b0b955724..ac926c942 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -33,19 +33,15 @@
#include "iw_cxgb4.h"
static int destroy_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
- struct c4iw_dev_ucontext *uctx)
+ struct c4iw_dev_ucontext *uctx, struct sk_buff *skb)
{
struct fw_ri_res_wr *res_wr;
struct fw_ri_res *res;
int wr_len;
struct c4iw_wr_wait wr_wait;
- struct sk_buff *skb;
int ret;
wr_len = sizeof *res_wr + sizeof *res;
- skb = alloc_skb(wr_len, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len);
@@ -863,7 +859,9 @@ int c4iw_destroy_cq(struct ib_cq *ib_cq)
ucontext = ib_cq->uobject ? to_c4iw_ucontext(ib_cq->uobject->context)
: NULL;
destroy_cq(&chp->rhp->rdev, &chp->cq,
- ucontext ? &ucontext->uctx : &chp->cq.rdev->uctx);
+ ucontext ? &ucontext->uctx : &chp->cq.rdev->uctx,
+ chp->destroy_skb);
+ chp->destroy_skb = NULL;
kfree(chp);
return 0;
}
@@ -879,7 +877,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
struct c4iw_cq *chp;
struct c4iw_create_cq_resp uresp;
struct c4iw_ucontext *ucontext = NULL;
- int ret;
+ int ret, wr_len;
size_t memsize, hwentries;
struct c4iw_mm_entry *mm, *mm2;
@@ -896,6 +894,13 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
if (!chp)
return ERR_PTR(-ENOMEM);
+ wr_len = sizeof(struct fw_ri_res_wr) + sizeof(struct fw_ri_res);
+ chp->destroy_skb = alloc_skb(wr_len, GFP_KERNEL);
+ if (!chp->destroy_skb) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
if (ib_context)
ucontext = to_c4iw_ucontext(ib_context);
@@ -936,7 +941,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
ret = create_cq(&rhp->rdev, &chp->cq,
ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
if (ret)
- goto err1;
+ goto err2;
chp->rhp = rhp;
chp->cq.size--; /* status page */
@@ -947,15 +952,15 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
init_waitqueue_head(&chp->wait);
ret = insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid);
if (ret)
- goto err2;
+ goto err3;
if (ucontext) {
mm = kmalloc(sizeof *mm, GFP_KERNEL);
if (!mm)
- goto err3;
+ goto err4;
mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
if (!mm2)
- goto err4;
+ goto err5;
uresp.qid_mask = rhp->rdev.cqmask;
uresp.cqid = chp->cq.cqid;
@@ -970,7 +975,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
ret = ib_copy_to_udata(udata, &uresp,
sizeof(uresp) - sizeof(uresp.reserved));
if (ret)
- goto err5;
+ goto err6;
mm->key = uresp.key;
mm->addr = virt_to_phys(chp->cq.queue);
@@ -986,15 +991,18 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
__func__, chp->cq.cqid, chp, chp->cq.size,
chp->cq.memsize, (unsigned long long) chp->cq.dma_addr);
return &chp->ibcq;
-err5:
+err6:
kfree(mm2);
-err4:
+err5:
kfree(mm);
-err3:
+err4:
remove_handle(rhp, &rhp->cqidr, chp->cq.cqid);
-err2:
+err3:
destroy_cq(&chp->rhp->rdev, &chp->cq,
- ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
+ ucontext ? &ucontext->uctx : &rhp->rdev.uctx,
+ chp->destroy_skb);
+err2:
+ kfree_skb(chp->destroy_skb);
err1:
kfree(chp);
return ERR_PTR(ret);
@@ -1008,15 +1016,15 @@ int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
{
struct c4iw_cq *chp;
- int ret;
+ int ret = 0;
unsigned long flag;
chp = to_c4iw_cq(ibcq);
spin_lock_irqsave(&chp->lock, flag);
- ret = t4_arm_cq(&chp->cq,
- (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED);
+ t4_arm_cq(&chp->cq,
+ (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED);
+ if (flags & IB_CQ_REPORT_MISSED_EVENTS)
+ ret = t4_cq_notempty(&chp->cq);
spin_unlock_irqrestore(&chp->lock, flag);
- if (ret && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
- ret = 0;
return ret;
}