2024-02-02 15:09:15

by Konstantin Taranov

[permalink] [raw]
Subject: [PATCH rdma-next v2 4/5] RDMA/mana_ib: Enable RoCE on port 1

Set netdev and RoCEv2 flag to be used in GID population.
We need GIDs of the master netdev and mc->ports stores slave devices.

Signed-off-by: Konstantin Taranov <[email protected]>
---
drivers/infiniband/hw/mana/device.c | 15 +++++++++++++++
drivers/infiniband/hw/mana/main.c | 16 ++++++++++++----
2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index 11b0410..2b362f5 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -53,6 +53,7 @@ static int mana_ib_probe(struct auxiliary_device *adev,
{
struct mana_adev *madev = container_of(adev, struct mana_adev, adev);
struct gdma_dev *mdev = madev->mdev;
+ struct net_device *upper_ndev;
struct mana_context *mc;
struct mana_ib_dev *dev;
int ret;
@@ -79,6 +80,20 @@ static int mana_ib_probe(struct auxiliary_device *adev,
dev->ib_dev.num_comp_vectors = 1;
dev->ib_dev.dev.parent = mdev->gdma_context->dev;

+ rcu_read_lock(); /* required to get upper dev */
+ upper_ndev = netdev_master_upper_dev_get_rcu(mc->ports[0]);
+ if (!upper_ndev) {
+ rcu_read_unlock();
+ ibdev_err(&dev->ib_dev, "Failed to get master netdev");
+ goto free_ib_device;
+ }
+ ret = ib_device_set_netdev(&dev->ib_dev, upper_ndev, 1);
+ rcu_read_unlock();
+ if (ret) {
+ ibdev_err(&dev->ib_dev, "Failed to set ib netdev, ret %d", ret);
+ goto free_ib_device;
+ }
+
ret = mana_gd_register_device(&mdev->gdma_context->mana_ib);
if (ret) {
ibdev_err(&dev->ib_dev, "Failed to register device, ret %d",
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 3e05a62..645abf3 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -462,11 +462,19 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
int mana_ib_get_port_immutable(struct ib_device *ibdev, u32 port_num,
struct ib_port_immutable *immutable)
{
- /*
- * This version only support RAW_PACKET
- * other values need to be filled for other types
- */
+ struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, ib_dev);
+ struct ib_port_attr attr;
+ int err;
+
+ err = ib_query_port(ibdev, port_num, &attr);
+ if (err)
+ return err;
+
+ immutable->pkey_tbl_len = attr.pkey_tbl_len;
+ immutable->gid_tbl_len = attr.gid_tbl_len;
immutable->core_cap_flags = RDMA_CORE_PORT_RAW_PACKET;
+ if (port_num == 1 && rnic_is_enabled(mdev))
+ immutable->core_cap_flags |= RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;

return 0;
}
--
1.8.3.1