[PATCH for bnxt_re V3 08/21] bnxt_re: Adding support for port related verbs

Selvin Xavier
2016-12-20T09:13:18Z

Implements query_port, modify_port and port_immutable verbs

Signed-off-by: Eddie Wai <eddie.wai-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Devesh Sharma <devesh.sharma-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Somnath Kotur <somnath.kotur-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Signed-off-by: Selvin Xavier <selvin.xavier-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
---
drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.c | 122 ++++++++++++++++++++++++
drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.h | 7 ++
drivers/infiniband/hw/bnxtre/bnxt_re_main.c | 4 +
3 files changed, 133 insertions(+)

diff --git a/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.c b/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.c
index 1c18f61..ede0e54 100644
--- a/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.c
+++ b/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.c
@@ -150,6 +150,128 @@ int bnxt_re_modify_device(struct ib_device *ibdev,
return 0;
}

+static void __to_ib_speed_width(struct net_device *netdev, u8 *speed, u8 *width)
+{
+ struct ethtool_link_ksettings lksettings;
+ u32 espeed;
+
+ if (netdev->ethtool_ops && netdev->ethtool_ops->get_link_ksettings) {
+ memset(&lksettings, 0, sizeof(lksettings));
+ rtnl_lock();
+ netdev->ethtool_ops->get_link_ksettings(netdev, &lksettings);
+ rtnl_unlock();
+ espeed = lksettings.base.speed;
+ } else {
+ espeed = SPEED_UNKNOWN;
+ }
+ switch (espeed) {
+ case SPEED_1000:
+ *speed = IB_SPEED_SDR;
+ *width = IB_WIDTH_1X;
+ break;
+ case SPEED_10000:
+ *speed = IB_SPEED_QDR;
+ *width = IB_WIDTH_1X;
+ break;
+ case SPEED_20000:
+ *speed = IB_SPEED_DDR;
+ *width = IB_WIDTH_4X;
+ break;
+ case SPEED_25000:
+ *speed = IB_SPEED_EDR;
+ *width = IB_WIDTH_1X;
+ break;
+ case SPEED_40000:
+ *speed = IB_SPEED_QDR;
+ *width = IB_WIDTH_4X;
+ break;
+ case SPEED_50000:
+ break;
+ default:
+ *speed = IB_SPEED_SDR;
+ *width = IB_WIDTH_1X;
+ break;
+ }
+}
+
+/* Port */
+int bnxt_re_query_port(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_attr *port_attr)
+{
+ struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+ struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
+
+ memset(port_attr, 0, sizeof(*port_attr));
+
+ if (netif_running(rdev->netdev) && netif_carrier_ok(rdev->netdev)) {
+ port_attr->state = IB_PORT_ACTIVE;
+ port_attr->phys_state = 5;
+ } else {
+ port_attr->state = IB_PORT_DOWN;
+ port_attr->phys_state = 3;
+ }
+ port_attr->max_mtu = IB_MTU_4096;
+ port_attr->active_mtu = iboe_get_mtu(rdev->netdev->mtu);
+ port_attr->gid_tbl_len = dev_attr->max_sgid;
+ port_attr->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
+ IB_PORT_DEVICE_MGMT_SUP |
+ IB_PORT_VENDOR_CLASS_SUP |
+ IB_PORT_IP_BASED_GIDS;
+
+ /* Max MSG size set to 2G for now */
+ port_attr->max_msg_sz = 0x80000000;
+ port_attr->bad_pkey_cntr = 0;
+ port_attr->qkey_viol_cntr = 0;
+ port_attr->pkey_tbl_len = dev_attr->max_pkey;
+ port_attr->lid = 0;
+ port_attr->sm_lid = 0;
+ port_attr->lmc = 0;
+ port_attr->max_vl_num = 4;
+ port_attr->sm_sl = 0;
+ port_attr->subnet_timeout = 0;
+ port_attr->init_type_reply = 0;
+ /* call the underlying netdev's ethtool hooks to query speed settings
+ * for which we acquire rtnl_lock _only_ if it's registered with
+ * IB stack to avoid race in the NETDEV_UNREG path
+ */
+ if (test_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags))
+ __to_ib_speed_width(rdev->netdev, &port_attr->active_speed,
+ &port_attr->active_width);
+ return 0;
+}
+
+int bnxt_re_modify_port(struct ib_device *ibdev, u8 port_num,
+ int port_modify_mask,
+ struct ib_port_modify *port_modify)
+{
+ switch (port_modify_mask) {
+ case IB_PORT_SHUTDOWN:
+ break;
+ case IB_PORT_INIT_TYPE:
+ break;
+ case IB_PORT_RESET_QKEY_CNTR:
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+int bnxt_re_get_port_immutable(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_immutable *immutable)
+{
+ struct ib_port_attr port_attr;
+
+ if (bnxt_re_query_port(ibdev, port_num, &port_attr))
+ return -EINVAL;
+
+ immutable->pkey_tbl_len = port_attr.pkey_tbl_len;
+ immutable->gid_tbl_len = port_attr.gid_tbl_len;
+ immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
+ immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
+ immutable->max_mad_size = IB_MGMT_MAD_SIZE;
+ return 0;
+}
/* Protection Domains */
int bnxt_re_dealloc_pd(struct ib_pd *ib_pd)
{
diff --git a/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.h b/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.h
index 45f9253..255a0ad 100644
--- a/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.h
+++ b/drivers/infiniband/hw/bnxtre/bnxt_re_ib_verbs.h
@@ -60,6 +60,13 @@ int bnxt_re_query_device(struct ib_device *ibdev,
int bnxt_re_modify_device(struct ib_device *ibdev,
int device_modify_mask,
struct ib_device_modify *device_modify);
+int bnxt_re_query_port(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_attr *port_attr);
+int bnxt_re_modify_port(struct ib_device *ibdev, u8 port_num,
+ int port_modify_mask,
+ struct ib_port_modify *port_modify);
+int bnxt_re_get_port_immutable(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_immutable *immutable);
struct ib_pd *bnxt_re_alloc_pd(struct ib_device *ibdev,
struct ib_ucontext *context,
struct ib_udata *udata);
diff --git a/drivers/infiniband/hw/bnxtre/bnxt_re_main.c b/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
index ec3fce2..afadf21 100644
--- a/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
+++ b/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
@@ -438,6 +438,10 @@ static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
ibdev->dma_device = &rdev->en_dev->pdev->dev;
ibdev->query_device = bnxt_re_query_device;
ibdev->modify_device = bnxt_re_modify_device;
+
+ ibdev->query_port = bnxt_re_query_port;
+ ibdev->modify_port = bnxt_re_modify_port;
+ ibdev->get_port_immutable = bnxt_re_get_port_immutable;
ibdev->alloc_pd = bnxt_re_alloc_pd;
ibdev->dealloc_pd = bnxt_re_dealloc_pd;
ibdev->alloc_ucontext = bnxt_re_alloc_ucontext;
--
2.5.5

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