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iw_cxgb4: invalidate the mr when posting a read_w_inv wr 

Also, rearrange things a bit to have a common c4iw_invalidate_mr()
function used everywhere that we need to invalidate.

Fixes: 49b53a93a6 ("iw_cxgb4: add fast-path for small REG_MR operations")
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2016-11-03 12:09:38 -07:00 committed by Doug Ledford
parent 4ff522ea47
commit 5c6b2aaf93
4 changed files with 24 additions and 23 deletions
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17
drivers/infiniband/hw/cxgb4/cq.c
View File

@ -666,18 +666,6 @@ skip_cqe:
return ret;
}
static void invalidate_mr(struct c4iw_dev *rhp, u32 rkey)
{
struct c4iw_mr *mhp;
unsigned long flags;
spin_lock_irqsave(&rhp->lock, flags);
mhp = get_mhp(rhp, rkey >> 8);
if (mhp)
mhp->attr.state = 0;
spin_unlock_irqrestore(&rhp->lock, flags);
}
/*
* Get one cq entry from c4iw and map it to openib.
*
@ -733,7 +721,7 @@ static int c4iw_poll_cq_one(struct c4iw_cq *chp, struct ib_wc *wc)
CQE_OPCODE(&cqe) == FW_RI_SEND_WITH_SE_INV) {
wc->ex.invalidate_rkey = CQE_WRID_STAG(&cqe);
wc->wc_flags |= IB_WC_WITH_INVALIDATE;
invalidate_mr(qhp->rhp, wc->ex.invalidate_rkey);
c4iw_invalidate_mr(qhp->rhp, wc->ex.invalidate_rkey);
}
} else {
switch (CQE_OPCODE(&cqe)) {
@ -762,7 +750,8 @@ static int c4iw_poll_cq_one(struct c4iw_cq *chp, struct ib_wc *wc)
/* Invalidate the MR if the fastreg failed */
if (CQE_STATUS(&cqe) != T4_ERR_SUCCESS)
invalidate_mr(qhp->rhp, CQE_WRID_FR_STAG(&cqe));
c4iw_invalidate_mr(qhp->rhp,
CQE_WRID_FR_STAG(&cqe));
break;
default:
printk(KERN_ERR MOD "Unexpected opcode %d "

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

@ -999,6 +999,6 @@ extern int db_coalescing_threshold;
extern int use_dsgl;
void c4iw_drain_rq(struct ib_qp *qp);
void c4iw_drain_sq(struct ib_qp *qp);
void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey);
#endif

12
drivers/infiniband/hw/cxgb4/mem.c
View File

@ -770,3 +770,15 @@ int c4iw_dereg_mr(struct ib_mr *ib_mr)
kfree(mhp);
return 0;
}
void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey)
{
struct c4iw_mr *mhp;
unsigned long flags;
spin_lock_irqsave(&rhp->lock, flags);
mhp = get_mhp(rhp, rkey >> 8);
if (mhp)
mhp->attr.state = 0;
spin_unlock_irqrestore(&rhp->lock, flags);
}

16
drivers/infiniband/hw/cxgb4/qp.c
View File

@ -706,12 +706,8 @@ static int build_memreg(struct t4_sq *sq, union t4_wr *wqe,
return 0;
}
static int build_inv_stag(struct c4iw_dev *dev, union t4_wr *wqe,
struct ib_send_wr *wr, u8 *len16)
static int build_inv_stag(union t4_wr *wqe, struct ib_send_wr *wr, u8 *len16)
{
struct c4iw_mr *mhp = get_mhp(dev, wr->ex.invalidate_rkey >> 8);
mhp->attr.state = 0;
wqe->inv.stag_inv = cpu_to_be32(wr->ex.invalidate_rkey);
wqe->inv.r2 = 0;
*len16 = DIV_ROUND_UP(sizeof wqe->inv, 16);
@ -842,10 +838,13 @@ int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
case IB_WR_RDMA_READ_WITH_INV:
fw_opcode = FW_RI_RDMA_READ_WR;
swsqe->opcode = FW_RI_READ_REQ;
if (wr->opcode == IB_WR_RDMA_READ_WITH_INV)
if (wr->opcode == IB_WR_RDMA_READ_WITH_INV) {
c4iw_invalidate_mr(qhp->rhp,
wr->sg_list[0].lkey);
fw_flags = FW_RI_RDMA_READ_INVALIDATE;
else
} else {
fw_flags = 0;
}
err = build_rdma_read(wqe, wr, &len16);
if (err)
break;
@ -878,7 +877,8 @@ int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
fw_flags |= FW_RI_LOCAL_FENCE_FLAG;
fw_opcode = FW_RI_INV_LSTAG_WR;
swsqe->opcode = FW_RI_LOCAL_INV;
err = build_inv_stag(qhp->rhp, wqe, wr, &len16);
err = build_inv_stag(wqe, wr, &len16);
c4iw_invalidate_mr(qhp->rhp, wr->ex.invalidate_rkey);
break;
default:
PDBG("%s post of type=%d TBD!\n", __func__,