diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mad.c | 162 |
1 files changed, 155 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c index b8cb25ebce50..591c2891159b 100644 --- a/drivers/infiniband/hw/mlx4/mad.c +++ b/drivers/infiniband/hw/mlx4/mad.c @@ -54,6 +54,15 @@ enum { #define MLX4_TUN_IS_RECV(a) (((a) >> MLX4_TUN_SEND_WRID_SHIFT) & 0x1) #define MLX4_TUN_WRID_QPN(a) (((a) >> MLX4_TUN_QPN_SHIFT) & 0x3) + /* Port mgmt change event handling */ + +#define GET_BLK_PTR_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.block_ptr) +#define GET_MASK_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.tbl_entries_mask) +#define NUM_IDX_IN_PKEY_TBL_BLK 32 +#define GUID_TBL_ENTRY_SIZE 8 /* size in bytes */ +#define GUID_TBL_BLK_NUM_ENTRIES 8 +#define GUID_TBL_BLK_SIZE (GUID_TBL_ENTRY_SIZE * GUID_TBL_BLK_NUM_ENTRIES) + struct mlx4_mad_rcv_buf { struct ib_grh grh; u8 payload[256]; @@ -76,6 +85,9 @@ struct mlx4_rcv_tunnel_mad { } __packed; static void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num); +static void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num); +static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, + int block, u32 change_bitmap); __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx) { @@ -220,8 +232,7 @@ static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, handle_client_rereg_event(dev, port_num); if (prev_lid != lid) - mlx4_ib_dispatch_event(dev, port_num, - IB_EVENT_LID_CHANGE); + handle_lid_change_event(dev, port_num); break; case IB_SMP_ATTR_PKEY_TABLE: @@ -231,6 +242,9 @@ static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, break; } + /* at this point, we are running in the master. + * Slaves do not receive SMPs. + */ bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod) & 0xFFFF; base = (__be16 *) &(((struct ib_smp *)mad)->data[0]); pkey_change_bitmap = 0; @@ -248,10 +262,13 @@ static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, "block=0x%x, change_bitmap=0x%x\n", port_num, bn, pkey_change_bitmap); - if (pkey_change_bitmap) + if (pkey_change_bitmap) { mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_PKEY_CHANGE); - + if (!dev->sriov.is_going_down) + __propagate_pkey_ev(dev, port_num, bn, + pkey_change_bitmap); + } break; case IB_SMP_ATTR_GUID_INFO: @@ -259,12 +276,56 @@ static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, if (!mlx4_is_master(dev->dev)) mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_GID_CHANGE); + /*if master, notify relevant slaves*/ + if (mlx4_is_master(dev->dev) && + !dev->sriov.is_going_down) { + bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod); + mlx4_ib_update_cache_on_guid_change(dev, bn, port_num, + (u8 *)(&((struct ib_smp *)mad)->data)); + mlx4_ib_notify_slaves_on_guid_change(dev, bn, port_num, + (u8 *)(&((struct ib_smp *)mad)->data)); + } break; + default: break; } } +static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, + int block, u32 change_bitmap) +{ + int i, ix, slave, err; + int have_event = 0; + + for (slave = 0; slave < dev->dev->caps.sqp_demux; slave++) { + if (slave == mlx4_master_func_num(dev->dev)) + continue; + if (!mlx4_is_slave_active(dev->dev, slave)) + continue; + + have_event = 0; + for (i = 0; i < 32; i++) { + if (!(change_bitmap & (1 << i))) + continue; + for (ix = 0; + ix < dev->dev->caps.pkey_table_len[port_num]; ix++) { + if (dev->pkeys.virt2phys_pkey[slave][port_num - 1] + [ix] == i + 32 * block) { + err = mlx4_gen_pkey_eqe(dev->dev, slave, port_num); + pr_debug("propagate_pkey_ev: slave %d," + " port %d, ix %d (%d)\n", + slave, port_num, ix, err); + have_event = 1; + break; + } + } + if (have_event) + break; + } + } +} + static void node_desc_override(struct ib_device *dev, struct ib_mad *mad) { @@ -789,18 +850,90 @@ void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev) } } +static void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num) +{ + mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_LID_CHANGE); + + if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) + mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, + MLX4_EQ_PORT_INFO_LID_CHANGE_MASK); +} + static void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num) { /* re-configure the alias-guid and mcg's */ if (mlx4_is_master(dev->dev)) { mlx4_ib_invalidate_all_guid_record(dev, port_num); - if (!dev->sriov.is_going_down) + if (!dev->sriov.is_going_down) { mlx4_ib_mcg_port_cleanup(&dev->sriov.demux[port_num - 1], 0); + mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, + MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK); + } } mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_CLIENT_REREGISTER); } +static void propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, + struct mlx4_eqe *eqe) +{ + __propagate_pkey_ev(dev, port_num, GET_BLK_PTR_FROM_EQE(eqe), + GET_MASK_FROM_EQE(eqe)); +} + +static void handle_slaves_guid_change(struct mlx4_ib_dev *dev, u8 port_num, + u32 guid_tbl_blk_num, u32 change_bitmap) +{ + struct ib_smp *in_mad = NULL; + struct ib_smp *out_mad = NULL; + u16 i; + + if (!mlx4_is_mfunc(dev->dev) || !mlx4_is_master(dev->dev)) + return; + + in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); + out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); + if (!in_mad || !out_mad) { + mlx4_ib_warn(&dev->ib_dev, "failed to allocate memory for guid info mads\n"); + goto out; + } + + guid_tbl_blk_num *= 4; + + for (i = 0; i < 4; i++) { + if (change_bitmap && (!((change_bitmap >> (8 * i)) & 0xff))) + continue; + memset(in_mad, 0, sizeof *in_mad); + memset(out_mad, 0, sizeof *out_mad); + + in_mad->base_version = 1; + in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; + in_mad->class_version = 1; + in_mad->method = IB_MGMT_METHOD_GET; + in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; + in_mad->attr_mod = cpu_to_be32(guid_tbl_blk_num + i); + + if (mlx4_MAD_IFC(dev, + MLX4_MAD_IFC_IGNORE_KEYS | MLX4_MAD_IFC_NET_VIEW, + port_num, NULL, NULL, in_mad, out_mad)) { + mlx4_ib_warn(&dev->ib_dev, "Failed in get GUID INFO MAD_IFC\n"); + goto out; + } + + mlx4_ib_update_cache_on_guid_change(dev, guid_tbl_blk_num + i, + port_num, + (u8 *)(&((struct ib_smp *)out_mad)->data)); + mlx4_ib_notify_slaves_on_guid_change(dev, guid_tbl_blk_num + i, + port_num, + (u8 *)(&((struct ib_smp *)out_mad)->data)); + } + +out: + kfree(in_mad); + kfree(out_mad); + return; +} + void handle_port_mgmt_change_event(struct work_struct *work) { struct ib_event_work *ew = container_of(work, struct ib_event_work, work); @@ -808,6 +941,8 @@ void handle_port_mgmt_change_event(struct work_struct *work) struct mlx4_eqe *eqe = &(ew->ib_eqe); u8 port = eqe->event.port_mgmt_change.port; u32 changed_attr; + u32 tbl_block; + u32 change_bitmap; switch (eqe->subtype) { case MLX4_DEV_PMC_SUBTYPE_PORT_INFO: @@ -823,11 +958,16 @@ void handle_port_mgmt_change_event(struct work_struct *work) /* Check if it is a lid change event */ if (changed_attr & MLX4_EQ_PORT_INFO_LID_CHANGE_MASK) - mlx4_ib_dispatch_event(dev, port, IB_EVENT_LID_CHANGE); + handle_lid_change_event(dev, port); /* Generate GUID changed event */ - if (changed_attr & MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK) + if (changed_attr & MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK) { mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); + /*if master, notify all slaves*/ + if (mlx4_is_master(dev->dev)) + mlx4_gen_slaves_port_mgt_ev(dev->dev, port, + MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK); + } if (changed_attr & MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK) handle_client_rereg_event(dev, port); @@ -835,11 +975,19 @@ void handle_port_mgmt_change_event(struct work_struct *work) case MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE: mlx4_ib_dispatch_event(dev, port, IB_EVENT_PKEY_CHANGE); + if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) + propagate_pkey_ev(dev, port, eqe); break; case MLX4_DEV_PMC_SUBTYPE_GUID_INFO: /* paravirtualized master's guid is guid 0 -- does not change */ if (!mlx4_is_master(dev->dev)) mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); + /*if master, notify relevant slaves*/ + else if (!dev->sriov.is_going_down) { + tbl_block = GET_BLK_PTR_FROM_EQE(eqe); + change_bitmap = GET_MASK_FROM_EQE(eqe); + handle_slaves_guid_change(dev, port, tbl_block, change_bitmap); + } break; default: pr_warn("Unsupported subtype 0x%x for " |