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authorRam Amrani <Ram.Amrani@Cavium.com>2017-01-24 11:51:43 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-17 04:41:58 (GMT)
commita4fa249385b6db208032a5445cea05891001b7b4 (patch)
tree8762fcf0f74281701ded7ab451c0bfa811411990
parentc47538f610160c8f9e3bd3e6816a624d28220b0c (diff)
downloadlinux-a4fa249385b6db208032a5445cea05891001b7b4.tar.xz
RDMA/qedr: Dispatch port active event from qedr_add
[ Upstream commit f449c7a2d822c2d81b5bcb2c50eec80796766726 ] Relying on qede to trigger qedr on startup is problematic. When probing both if qedr loads slowly then qede can assume qedr is missing and not trigger it. This patch adds a triggering from qedr and protects against a race via an atomic bit. Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com> Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/infiniband/hw/qedr/main.c20
-rw-r--r--drivers/infiniband/hw/qedr/qedr.h5
2 files changed, 19 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 7b74d09..58e92bc 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -792,6 +792,9 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
goto sysfs_err;
+ if (!test_and_set_bit(QEDR_ENET_STATE_BIT, &dev->enet_state))
+ qedr_ib_dispatch_event(dev, QEDR_PORT, IB_EVENT_PORT_ACTIVE);
+
DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
return dev;
@@ -824,11 +827,10 @@ static void qedr_remove(struct qedr_dev *dev)
ib_dealloc_device(&dev->ibdev);
}
-static int qedr_close(struct qedr_dev *dev)
+static void qedr_close(struct qedr_dev *dev)
{
- qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ERR);
-
- return 0;
+ if (test_and_clear_bit(QEDR_ENET_STATE_BIT, &dev->enet_state))
+ qedr_ib_dispatch_event(dev, QEDR_PORT, IB_EVENT_PORT_ERR);
}
static void qedr_shutdown(struct qedr_dev *dev)
@@ -837,6 +839,12 @@ static void qedr_shutdown(struct qedr_dev *dev)
qedr_remove(dev);
}
+static void qedr_open(struct qedr_dev *dev)
+{
+ if (!test_and_set_bit(QEDR_ENET_STATE_BIT, &dev->enet_state))
+ qedr_ib_dispatch_event(dev, QEDR_PORT, IB_EVENT_PORT_ACTIVE);
+}
+
static void qedr_mac_address_change(struct qedr_dev *dev)
{
union ib_gid *sgid = &dev->sgid_tbl[0];
@@ -863,7 +871,7 @@ static void qedr_mac_address_change(struct qedr_dev *dev)
ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr);
- qedr_ib_dispatch_event(dev, 1, IB_EVENT_GID_CHANGE);
+ qedr_ib_dispatch_event(dev, QEDR_PORT, IB_EVENT_GID_CHANGE);
if (rc)
DP_ERR(dev, "Error updating mac filter\n");
@@ -877,7 +885,7 @@ static void qedr_notify(struct qedr_dev *dev, enum qede_roce_event event)
{
switch (event) {
case QEDE_UP:
- qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ACTIVE);
+ qedr_open(dev);
break;
case QEDE_DOWN:
qedr_close(dev);
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 620badd..f669d0b 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -113,6 +113,8 @@ struct qedr_device_attr {
struct qed_rdma_events events;
};
+#define QEDR_ENET_STATE_BIT (0)
+
struct qedr_dev {
struct ib_device ibdev;
struct qed_dev *cdev;
@@ -153,6 +155,8 @@ struct qedr_dev {
struct qedr_cq *gsi_sqcq;
struct qedr_cq *gsi_rqcq;
struct qedr_qp *gsi_qp;
+
+ unsigned long enet_state;
};
#define QEDR_MAX_SQ_PBL (0x8000)
@@ -188,6 +192,7 @@ struct qedr_dev {
#define QEDR_ROCE_MAX_CNQ_SIZE (0x4000)
#define QEDR_MAX_PORT (1)
+#define QEDR_PORT (1)
#define QEDR_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)