mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
RDMA/bnxt_re: Fix RQE posting logic
This patch adds code to ring RQ Doorbell aggressively so that the adapter can DMA RQ buffers sooner, instead of DMA all WQEs in the post_recv WR list together at the end of the post_recv verb. Also use spinlock to serialize RQ posting Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com> Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com> Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
parent
3fb755b3d5
commit
018cf5995d
3 changed files with 20 additions and 1 deletions
|
@ -58,6 +58,8 @@
|
||||||
|
|
||||||
#define BNXT_RE_UD_QP_HW_STALL 0x400000
|
#define BNXT_RE_UD_QP_HW_STALL 0x400000
|
||||||
|
|
||||||
|
#define BNXT_RE_RQ_WQE_THRESHOLD 32
|
||||||
|
|
||||||
struct bnxt_re_work {
|
struct bnxt_re_work {
|
||||||
struct work_struct work;
|
struct work_struct work;
|
||||||
unsigned long event;
|
unsigned long event;
|
||||||
|
|
|
@ -1249,6 +1249,7 @@ struct ib_qp *bnxt_re_create_qp(struct ib_pd *ib_pd,
|
||||||
|
|
||||||
qp->ib_qp.qp_num = qp->qplib_qp.id;
|
qp->ib_qp.qp_num = qp->qplib_qp.id;
|
||||||
spin_lock_init(&qp->sq_lock);
|
spin_lock_init(&qp->sq_lock);
|
||||||
|
spin_lock_init(&qp->rq_lock);
|
||||||
|
|
||||||
if (udata) {
|
if (udata) {
|
||||||
struct bnxt_re_qp_resp resp;
|
struct bnxt_re_qp_resp resp;
|
||||||
|
@ -2281,7 +2282,10 @@ int bnxt_re_post_recv(struct ib_qp *ib_qp, struct ib_recv_wr *wr,
|
||||||
struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp);
|
struct bnxt_re_qp *qp = container_of(ib_qp, struct bnxt_re_qp, ib_qp);
|
||||||
struct bnxt_qplib_swqe wqe;
|
struct bnxt_qplib_swqe wqe;
|
||||||
int rc = 0, payload_sz = 0;
|
int rc = 0, payload_sz = 0;
|
||||||
|
unsigned long flags;
|
||||||
|
u32 count = 0;
|
||||||
|
|
||||||
|
spin_lock_irqsave(&qp->rq_lock, flags);
|
||||||
while (wr) {
|
while (wr) {
|
||||||
/* House keeping */
|
/* House keeping */
|
||||||
memset(&wqe, 0, sizeof(wqe));
|
memset(&wqe, 0, sizeof(wqe));
|
||||||
|
@ -2310,9 +2314,21 @@ int bnxt_re_post_recv(struct ib_qp *ib_qp, struct ib_recv_wr *wr,
|
||||||
*bad_wr = wr;
|
*bad_wr = wr;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Ring DB if the RQEs posted reaches a threshold value */
|
||||||
|
if (++count >= BNXT_RE_RQ_WQE_THRESHOLD) {
|
||||||
|
bnxt_qplib_post_recv_db(&qp->qplib_qp);
|
||||||
|
count = 0;
|
||||||
|
}
|
||||||
|
|
||||||
wr = wr->next;
|
wr = wr->next;
|
||||||
}
|
}
|
||||||
bnxt_qplib_post_recv_db(&qp->qplib_qp);
|
|
||||||
|
if (count)
|
||||||
|
bnxt_qplib_post_recv_db(&qp->qplib_qp);
|
||||||
|
|
||||||
|
spin_unlock_irqrestore(&qp->rq_lock, flags);
|
||||||
|
|
||||||
return rc;
|
return rc;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -74,6 +74,7 @@ struct bnxt_re_qp {
|
||||||
struct bnxt_re_dev *rdev;
|
struct bnxt_re_dev *rdev;
|
||||||
struct ib_qp ib_qp;
|
struct ib_qp ib_qp;
|
||||||
spinlock_t sq_lock; /* protect sq */
|
spinlock_t sq_lock; /* protect sq */
|
||||||
|
spinlock_t rq_lock; /* protect rq */
|
||||||
struct bnxt_qplib_qp qplib_qp;
|
struct bnxt_qplib_qp qplib_qp;
|
||||||
struct ib_umem *sumem;
|
struct ib_umem *sumem;
|
||||||
struct ib_umem *rumem;
|
struct ib_umem *rumem;
|
||||||
|
|
Loading…
Reference in a new issue