#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>
+#include <rdma/ib_sa.h>
+#include <rdma/ib_cache.h>
+#include <linux/random.h>
#include <linux/mlx4/cmd.h>
#include <linux/gfp.h>
#include <rdma/ib_pma.h>
#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];
struct ib_mad mad;
} __packed;
-int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
+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_gen_node_guid(void)
+{
+#define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40))
+ return cpu_to_be64(NODE_GUID_HI | random32());
+}
+
+__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx)
+{
+ return cpu_to_be64(atomic_inc_return(&ctx->tid)) |
+ cpu_to_be64(0xff00000000000000LL);
+}
+
+int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags,
int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
void *in_mad, void *response_mad)
{
* Key check traps can't be generated unless we have in_wc to
* tell us where to send the trap.
*/
- if (ignore_mkey || !in_wc)
+ if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_MKEY) || !in_wc)
op_modifier |= 0x1;
- if (ignore_bkey || !in_wc)
+ if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_BKEY) || !in_wc)
op_modifier |= 0x2;
+ if (mlx4_is_mfunc(dev->dev) &&
+ (mad_ifc_flags & MLX4_MAD_IFC_NET_VIEW || in_wc))
+ op_modifier |= 0x8;
if (in_wc) {
struct {
in_modifier |= in_wc->slid << 16;
}
- err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma,
- in_modifier, op_modifier,
+ err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma, in_modifier,
+ mlx4_is_master(dev->dev) ? (op_modifier & ~0x8) : op_modifier,
MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
- MLX4_CMD_NATIVE);
+ (op_modifier & 0x8) ? MLX4_CMD_NATIVE : MLX4_CMD_WRAPPED);
if (!err)
memcpy(response_mad, outmailbox->buf, 256);
{
struct ib_port_info *pinfo;
u16 lid;
+ __be16 *base;
+ u32 bn, pkey_change_bitmap;
+ int i;
+
struct mlx4_ib_dev *dev = to_mdev(ibdev);
if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
pinfo->neighbormtu_mastersmsl & 0xf);
if (pinfo->clientrereg_resv_subnetto & 0x80)
- mlx4_ib_dispatch_event(dev, port_num,
- IB_EVENT_CLIENT_REREGISTER);
+ 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:
- mlx4_ib_dispatch_event(dev, port_num,
- IB_EVENT_PKEY_CHANGE);
+ if (!mlx4_is_mfunc(dev->dev)) {
+ mlx4_ib_dispatch_event(dev, port_num,
+ IB_EVENT_PKEY_CHANGE);
+ 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;
+ for (i = 0; i < 32; i++) {
+ pr_debug("PKEY[%d] = x%x\n",
+ i + bn*32, be16_to_cpu(base[i]));
+ if (be16_to_cpu(base[i]) !=
+ dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32]) {
+ pkey_change_bitmap |= (1 << i);
+ dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32] =
+ be16_to_cpu(base[i]);
+ }
+ }
+ pr_debug("PKEY Change event: port=%d, "
+ "block=0x%x, change_bitmap=0x%x\n",
+ port_num, bn, 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:
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)
{
}
}
+static int mlx4_ib_demux_sa_handler(struct ib_device *ibdev, int port, int slave,
+ struct ib_sa_mad *sa_mad)
+{
+ int ret = 0;
+
+ /* dispatch to different sa handlers */
+ switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) {
+ case IB_SA_ATTR_MC_MEMBER_REC:
+ ret = mlx4_ib_mcg_demux_handler(ibdev, port, slave, sa_mad);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+int mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ int i;
+
+ for (i = 0; i < dev->dev->caps.sqp_demux; i++) {
+ if (dev->sriov.demux[port - 1].guid_cache[i] == guid)
+ return i;
+ }
+ return -1;
+}
+
+
+static int get_pkey_phys_indices(struct mlx4_ib_dev *ibdev, u8 port, u8 ph_pkey_ix,
+ u8 *full_pk_ix, u8 *partial_pk_ix,
+ int *is_full_member)
+{
+ u16 search_pkey;
+ int fm;
+ int err = 0;
+ u16 pk;
+
+ err = ib_get_cached_pkey(&ibdev->ib_dev, port, ph_pkey_ix, &search_pkey);
+ if (err)
+ return err;
+
+ fm = (search_pkey & 0x8000) ? 1 : 0;
+ if (fm) {
+ *full_pk_ix = ph_pkey_ix;
+ search_pkey &= 0x7FFF;
+ } else {
+ *partial_pk_ix = ph_pkey_ix;
+ search_pkey |= 0x8000;
+ }
+
+ if (ib_find_exact_cached_pkey(&ibdev->ib_dev, port, search_pkey, &pk))
+ pk = 0xFFFF;
+
+ if (fm)
+ *partial_pk_ix = (pk & 0xFF);
+ else
+ *full_pk_ix = (pk & 0xFF);
+
+ *is_full_member = fm;
+ return err;
+}
+
+int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
+ enum ib_qp_type dest_qpt, struct ib_wc *wc,
+ struct ib_grh *grh, struct ib_mad *mad)
+{
+ struct ib_sge list;
+ struct ib_send_wr wr, *bad_wr;
+ struct mlx4_ib_demux_pv_ctx *tun_ctx;
+ struct mlx4_ib_demux_pv_qp *tun_qp;
+ struct mlx4_rcv_tunnel_mad *tun_mad;
+ struct ib_ah_attr attr;
+ struct ib_ah *ah;
+ struct ib_qp *src_qp = NULL;
+ unsigned tun_tx_ix = 0;
+ int dqpn;
+ int ret = 0;
+ int i;
+ int is_full_member = 0;
+ u16 tun_pkey_ix;
+ u8 ph_pkey_ix, full_pk_ix = 0, partial_pk_ix = 0;
+
+ if (dest_qpt > IB_QPT_GSI)
+ return -EINVAL;
+
+ tun_ctx = dev->sriov.demux[port-1].tun[slave];
+
+ /* check if proxy qp created */
+ if (!tun_ctx || tun_ctx->state != DEMUX_PV_STATE_ACTIVE)
+ return -EAGAIN;
+
+ /* QP0 forwarding only for Dom0 */
+ if (!dest_qpt && (mlx4_master_func_num(dev->dev) != slave))
+ return -EINVAL;
+
+ if (!dest_qpt)
+ tun_qp = &tun_ctx->qp[0];
+ else
+ tun_qp = &tun_ctx->qp[1];
+
+ /* compute pkey index for slave */
+ /* get physical pkey -- virtualized Dom0 pkey to phys*/
+ if (dest_qpt) {
+ ph_pkey_ix =
+ dev->pkeys.virt2phys_pkey[mlx4_master_func_num(dev->dev)][port - 1][wc->pkey_index];
+
+ /* now, translate this to the slave pkey index */
+ ret = get_pkey_phys_indices(dev, port, ph_pkey_ix, &full_pk_ix,
+ &partial_pk_ix, &is_full_member);
+ if (ret)
+ return -EINVAL;
+
+ for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) {
+ if ((dev->pkeys.virt2phys_pkey[slave][port - 1][i] == full_pk_ix) ||
+ (is_full_member &&
+ (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == partial_pk_ix)))
+ break;
+ }
+ if (i == dev->dev->caps.pkey_table_len[port])
+ return -EINVAL;
+ tun_pkey_ix = i;
+ } else
+ tun_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0];
+
+ dqpn = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave + port + (dest_qpt * 2) - 1;
+
+ /* get tunnel tx data buf for slave */
+ src_qp = tun_qp->qp;
+
+ /* create ah. Just need an empty one with the port num for the post send.
+ * The driver will set the force loopback bit in post_send */
+ memset(&attr, 0, sizeof attr);
+ attr.port_num = port;
+ ah = ib_create_ah(tun_ctx->pd, &attr);
+ if (IS_ERR(ah))
+ return -ENOMEM;
+
+ /* allocate tunnel tx buf after pass failure returns */
+ spin_lock(&tun_qp->tx_lock);
+ if (tun_qp->tx_ix_head - tun_qp->tx_ix_tail >=
+ (MLX4_NUM_TUNNEL_BUFS - 1))
+ ret = -EAGAIN;
+ else
+ tun_tx_ix = (++tun_qp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1);
+ spin_unlock(&tun_qp->tx_lock);
+ if (ret)
+ goto out;
+
+ tun_mad = (struct mlx4_rcv_tunnel_mad *) (tun_qp->tx_ring[tun_tx_ix].buf.addr);
+ if (tun_qp->tx_ring[tun_tx_ix].ah)
+ ib_destroy_ah(tun_qp->tx_ring[tun_tx_ix].ah);
+ tun_qp->tx_ring[tun_tx_ix].ah = ah;
+ ib_dma_sync_single_for_cpu(&dev->ib_dev,
+ tun_qp->tx_ring[tun_tx_ix].buf.map,
+ sizeof (struct mlx4_rcv_tunnel_mad),
+ DMA_TO_DEVICE);
+
+ /* copy over to tunnel buffer */
+ if (grh)
+ memcpy(&tun_mad->grh, grh, sizeof *grh);
+ memcpy(&tun_mad->mad, mad, sizeof *mad);
+
+ /* adjust tunnel data */
+ tun_mad->hdr.pkey_index = cpu_to_be16(tun_pkey_ix);
+ tun_mad->hdr.sl_vid = cpu_to_be16(((u16)(wc->sl)) << 12);
+ tun_mad->hdr.slid_mac_47_32 = cpu_to_be16(wc->slid);
+ tun_mad->hdr.flags_src_qp = cpu_to_be32(wc->src_qp & 0xFFFFFF);
+ tun_mad->hdr.g_ml_path = (grh && (wc->wc_flags & IB_WC_GRH)) ? 0x80 : 0;
+
+ ib_dma_sync_single_for_device(&dev->ib_dev,
+ tun_qp->tx_ring[tun_tx_ix].buf.map,
+ sizeof (struct mlx4_rcv_tunnel_mad),
+ DMA_TO_DEVICE);
+
+ list.addr = tun_qp->tx_ring[tun_tx_ix].buf.map;
+ list.length = sizeof (struct mlx4_rcv_tunnel_mad);
+ list.lkey = tun_ctx->mr->lkey;
+
+ wr.wr.ud.ah = ah;
+ wr.wr.ud.port_num = port;
+ wr.wr.ud.remote_qkey = IB_QP_SET_QKEY;
+ wr.wr.ud.remote_qpn = dqpn;
+ wr.next = NULL;
+ wr.wr_id = ((u64) tun_tx_ix) | MLX4_TUN_SET_WRID_QPN(dest_qpt);
+ wr.sg_list = &list;
+ wr.num_sge = 1;
+ wr.opcode = IB_WR_SEND;
+ wr.send_flags = IB_SEND_SIGNALED;
+
+ ret = ib_post_send(src_qp, &wr, &bad_wr);
+out:
+ if (ret)
+ ib_destroy_ah(ah);
+ return ret;
+}
+
+static int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port,
+ struct ib_wc *wc, struct ib_grh *grh,
+ struct ib_mad *mad)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ int err;
+ int slave;
+ u8 *slave_id;
+
+ /* Initially assume that this mad is for us */
+ slave = mlx4_master_func_num(dev->dev);
+
+ /* See if the slave id is encoded in a response mad */
+ if (mad->mad_hdr.method & 0x80) {
+ slave_id = (u8 *) &mad->mad_hdr.tid;
+ slave = *slave_id;
+ if (slave != 255) /*255 indicates the dom0*/
+ *slave_id = 0; /* remap tid */
+ }
+
+ /* If a grh is present, we demux according to it */
+ if (wc->wc_flags & IB_WC_GRH) {
+ slave = mlx4_ib_find_real_gid(ibdev, port, grh->dgid.global.interface_id);
+ if (slave < 0) {
+ mlx4_ib_warn(ibdev, "failed matching grh\n");
+ return -ENOENT;
+ }
+ }
+ /* Class-specific handling */
+ switch (mad->mad_hdr.mgmt_class) {
+ case IB_MGMT_CLASS_SUBN_ADM:
+ if (mlx4_ib_demux_sa_handler(ibdev, port, slave,
+ (struct ib_sa_mad *) mad))
+ return 0;
+ break;
+ case IB_MGMT_CLASS_CM:
+ if (mlx4_ib_demux_cm_handler(ibdev, port, &slave, mad))
+ return 0;
+ break;
+ case IB_MGMT_CLASS_DEVICE_MGMT:
+ if (mad->mad_hdr.method != IB_MGMT_METHOD_GET_RESP)
+ return 0;
+ break;
+ default:
+ /* Drop unsupported classes for slaves in tunnel mode */
+ if (slave != mlx4_master_func_num(dev->dev)) {
+ pr_debug("dropping unsupported ingress mad from class:%d "
+ "for slave:%d\n", mad->mad_hdr.mgmt_class, slave);
+ return 0;
+ }
+ }
+ /*make sure that no slave==255 was not handled yet.*/
+ if (slave >= dev->dev->caps.sqp_demux) {
+ mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n",
+ slave, dev->dev->caps.sqp_demux);
+ return -ENOENT;
+ }
+
+ err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad);
+ if (err)
+ pr_debug("failed sending to slave %d via tunnel qp (%d)\n",
+ slave, err);
+ return 0;
+}
+
static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
struct ib_wc *in_wc, struct ib_grh *in_grh,
struct ib_mad *in_mad, struct ib_mad *out_mad)
prev_lid = pattr.lid;
err = mlx4_MAD_IFC(to_mdev(ibdev),
- mad_flags & IB_MAD_IGNORE_MKEY,
- mad_flags & IB_MAD_IGNORE_BKEY,
+ (mad_flags & IB_MAD_IGNORE_MKEY ? MLX4_MAD_IFC_IGNORE_MKEY : 0) |
+ (mad_flags & IB_MAD_IGNORE_BKEY ? MLX4_MAD_IFC_IGNORE_BKEY : 0) |
+ MLX4_MAD_IFC_NET_VIEW,
port_num, in_wc, in_grh, in_mad, out_mad);
if (err)
return IB_MAD_RESULT_FAILURE;
if (!out_mad->mad_hdr.status) {
if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV))
smp_snoop(ibdev, port_num, in_mad, prev_lid);
- node_desc_override(ibdev, out_mad);
+ /* slaves get node desc from FW */
+ if (!mlx4_is_slave(to_mdev(ibdev)->dev))
+ node_desc_override(ibdev, out_mad);
}
/* set return bit in status of directed route responses */
static void send_handler(struct ib_mad_agent *agent,
struct ib_mad_send_wc *mad_send_wc)
{
+ if (mad_send_wc->send_buf->context[0])
+ ib_destroy_ah(mad_send_wc->send_buf->context[0]);
ib_free_send_mad(mad_send_wc->send_buf);
}
}
}
+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) {
+ 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);
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:
/* 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)
- mlx4_ib_dispatch_event(dev, port,
- IB_EVENT_CLIENT_REREGISTER);
+ handle_client_rereg_event(dev, port);
break;
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 "
return ib_post_recv(tun_qp->qp, &recv_wr, &bad_recv_wr);
}
+static int mlx4_ib_multiplex_sa_handler(struct ib_device *ibdev, int port,
+ int slave, struct ib_sa_mad *sa_mad)
+{
+ int ret = 0;
+
+ /* dispatch to different sa handlers */
+ switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) {
+ case IB_SA_ATTR_MC_MEMBER_REC:
+ ret = mlx4_ib_mcg_multiplex_handler(ibdev, port, slave, sa_mad);
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+static int is_proxy_qp0(struct mlx4_ib_dev *dev, int qpn, int slave)
+{
+ int proxy_start = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave;
+
+ return (qpn >= proxy_start && qpn <= proxy_start + 1);
+}
+
+
+int mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port,
+ enum ib_qp_type dest_qpt, u16 pkey_index, u32 remote_qpn,
+ u32 qkey, struct ib_ah_attr *attr, struct ib_mad *mad)
+{
+ struct ib_sge list;
+ struct ib_send_wr wr, *bad_wr;
+ struct mlx4_ib_demux_pv_ctx *sqp_ctx;
+ struct mlx4_ib_demux_pv_qp *sqp;
+ struct mlx4_mad_snd_buf *sqp_mad;
+ struct ib_ah *ah;
+ struct ib_qp *send_qp = NULL;
+ unsigned wire_tx_ix = 0;
+ int ret = 0;
+ u16 wire_pkey_ix;
+ int src_qpnum;
+ u8 sgid_index;
+
+
+ sqp_ctx = dev->sriov.sqps[port-1];
+
+ /* check if proxy qp created */
+ if (!sqp_ctx || sqp_ctx->state != DEMUX_PV_STATE_ACTIVE)
+ return -EAGAIN;
+
+ /* QP0 forwarding only for Dom0 */
+ if (dest_qpt == IB_QPT_SMI && (mlx4_master_func_num(dev->dev) != slave))
+ return -EINVAL;
+
+ if (dest_qpt == IB_QPT_SMI) {
+ src_qpnum = 0;
+ sqp = &sqp_ctx->qp[0];
+ wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0];
+ } else {
+ src_qpnum = 1;
+ sqp = &sqp_ctx->qp[1];
+ wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][pkey_index];
+ }
+
+ send_qp = sqp->qp;
+
+ /* create ah */
+ sgid_index = attr->grh.sgid_index;
+ attr->grh.sgid_index = 0;
+ ah = ib_create_ah(sqp_ctx->pd, attr);
+ if (IS_ERR(ah))
+ return -ENOMEM;
+ attr->grh.sgid_index = sgid_index;
+ to_mah(ah)->av.ib.gid_index = sgid_index;
+ /* get rid of force-loopback bit */
+ to_mah(ah)->av.ib.port_pd &= cpu_to_be32(0x7FFFFFFF);
+ spin_lock(&sqp->tx_lock);
+ if (sqp->tx_ix_head - sqp->tx_ix_tail >=
+ (MLX4_NUM_TUNNEL_BUFS - 1))
+ ret = -EAGAIN;
+ else
+ wire_tx_ix = (++sqp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1);
+ spin_unlock(&sqp->tx_lock);
+ if (ret)
+ goto out;
+
+ sqp_mad = (struct mlx4_mad_snd_buf *) (sqp->tx_ring[wire_tx_ix].buf.addr);
+ if (sqp->tx_ring[wire_tx_ix].ah)
+ ib_destroy_ah(sqp->tx_ring[wire_tx_ix].ah);
+ sqp->tx_ring[wire_tx_ix].ah = ah;
+ ib_dma_sync_single_for_cpu(&dev->ib_dev,
+ sqp->tx_ring[wire_tx_ix].buf.map,
+ sizeof (struct mlx4_mad_snd_buf),
+ DMA_TO_DEVICE);
+
+ memcpy(&sqp_mad->payload, mad, sizeof *mad);
+
+ ib_dma_sync_single_for_device(&dev->ib_dev,
+ sqp->tx_ring[wire_tx_ix].buf.map,
+ sizeof (struct mlx4_mad_snd_buf),
+ DMA_TO_DEVICE);
+
+ list.addr = sqp->tx_ring[wire_tx_ix].buf.map;
+ list.length = sizeof (struct mlx4_mad_snd_buf);
+ list.lkey = sqp_ctx->mr->lkey;
+
+ wr.wr.ud.ah = ah;
+ wr.wr.ud.port_num = port;
+ wr.wr.ud.pkey_index = wire_pkey_ix;
+ wr.wr.ud.remote_qkey = qkey;
+ wr.wr.ud.remote_qpn = remote_qpn;
+ wr.next = NULL;
+ wr.wr_id = ((u64) wire_tx_ix) | MLX4_TUN_SET_WRID_QPN(src_qpnum);
+ wr.sg_list = &list;
+ wr.num_sge = 1;
+ wr.opcode = IB_WR_SEND;
+ wr.send_flags = IB_SEND_SIGNALED;
+
+ ret = ib_post_send(send_qp, &wr, &bad_wr);
+out:
+ if (ret)
+ ib_destroy_ah(ah);
+ return ret;
+}
+
+static void mlx4_ib_multiplex_mad(struct mlx4_ib_demux_pv_ctx *ctx, struct ib_wc *wc)
+{
+ struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev);
+ struct mlx4_ib_demux_pv_qp *tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc->wr_id)];
+ int wr_ix = wc->wr_id & (MLX4_NUM_TUNNEL_BUFS - 1);
+ struct mlx4_tunnel_mad *tunnel = tun_qp->ring[wr_ix].addr;
+ struct mlx4_ib_ah ah;
+ struct ib_ah_attr ah_attr;
+ u8 *slave_id;
+ int slave;
+
+ /* Get slave that sent this packet */
+ if (wc->src_qp < dev->dev->phys_caps.base_proxy_sqpn ||
+ wc->src_qp >= dev->dev->phys_caps.base_proxy_sqpn + 8 * MLX4_MFUNC_MAX ||
+ (wc->src_qp & 0x1) != ctx->port - 1 ||
+ wc->src_qp & 0x4) {
+ mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d\n", wc->src_qp);
+ return;
+ }
+ slave = ((wc->src_qp & ~0x7) - dev->dev->phys_caps.base_proxy_sqpn) / 8;
+ if (slave != ctx->slave) {
+ mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: "
+ "belongs to another slave\n", wc->src_qp);
+ return;
+ }
+ if (slave != mlx4_master_func_num(dev->dev) && !(wc->src_qp & 0x2)) {
+ mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: "
+ "non-master trying to send QP0 packets\n", wc->src_qp);
+ return;
+ }
+
+ /* Map transaction ID */
+ ib_dma_sync_single_for_cpu(ctx->ib_dev, tun_qp->ring[wr_ix].map,
+ sizeof (struct mlx4_tunnel_mad),
+ DMA_FROM_DEVICE);
+ switch (tunnel->mad.mad_hdr.method) {
+ case IB_MGMT_METHOD_SET:
+ case IB_MGMT_METHOD_GET:
+ case IB_MGMT_METHOD_REPORT:
+ case IB_SA_METHOD_GET_TABLE:
+ case IB_SA_METHOD_DELETE:
+ case IB_SA_METHOD_GET_MULTI:
+ case IB_SA_METHOD_GET_TRACE_TBL:
+ slave_id = (u8 *) &tunnel->mad.mad_hdr.tid;
+ if (*slave_id) {
+ mlx4_ib_warn(ctx->ib_dev, "egress mad has non-null tid msb:%d "
+ "class:%d slave:%d\n", *slave_id,
+ tunnel->mad.mad_hdr.mgmt_class, slave);
+ return;
+ } else
+ *slave_id = slave;
+ default:
+ /* nothing */;
+ }
+
+ /* Class-specific handling */
+ switch (tunnel->mad.mad_hdr.mgmt_class) {
+ case IB_MGMT_CLASS_SUBN_ADM:
+ if (mlx4_ib_multiplex_sa_handler(ctx->ib_dev, ctx->port, slave,
+ (struct ib_sa_mad *) &tunnel->mad))
+ return;
+ break;
+ case IB_MGMT_CLASS_CM:
+ if (mlx4_ib_multiplex_cm_handler(ctx->ib_dev, ctx->port, slave,
+ (struct ib_mad *) &tunnel->mad))
+ return;
+ break;
+ case IB_MGMT_CLASS_DEVICE_MGMT:
+ if (tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_GET &&
+ tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_SET)
+ return;
+ break;
+ default:
+ /* Drop unsupported classes for slaves in tunnel mode */
+ if (slave != mlx4_master_func_num(dev->dev)) {
+ mlx4_ib_warn(ctx->ib_dev, "dropping unsupported egress mad from class:%d "
+ "for slave:%d\n", tunnel->mad.mad_hdr.mgmt_class, slave);
+ return;
+ }
+ }
+
+ /* We are using standard ib_core services to send the mad, so generate a
+ * stadard address handle by decoding the tunnelled mlx4_ah fields */
+ memcpy(&ah.av, &tunnel->hdr.av, sizeof (struct mlx4_av));
+ ah.ibah.device = ctx->ib_dev;
+ mlx4_ib_query_ah(&ah.ibah, &ah_attr);
+ if ((ah_attr.ah_flags & IB_AH_GRH) &&
+ (ah_attr.grh.sgid_index != slave)) {
+ mlx4_ib_warn(ctx->ib_dev, "slave:%d accessed invalid sgid_index:%d\n",
+ slave, ah_attr.grh.sgid_index);
+ return;
+ }
+
+ mlx4_ib_send_to_wire(dev, slave, ctx->port,
+ is_proxy_qp0(dev, wc->src_qp, slave) ?
+ IB_QPT_SMI : IB_QPT_GSI,
+ be16_to_cpu(tunnel->hdr.pkey_index),
+ be32_to_cpu(tunnel->hdr.remote_qpn),
+ be32_to_cpu(tunnel->hdr.qkey),
+ &ah_attr, &tunnel->mad);
+}
+
static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
enum ib_qp_type qp_type, int is_tun)
{
static void mlx4_ib_tunnel_comp_worker(struct work_struct *work)
{
- /* dummy until next patch in series */
+ struct mlx4_ib_demux_pv_ctx *ctx;
+ struct mlx4_ib_demux_pv_qp *tun_qp;
+ struct ib_wc wc;
+ int ret;
+ ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work);
+ ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP);
+
+ while (ib_poll_cq(ctx->cq, 1, &wc) == 1) {
+ tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)];
+ if (wc.status == IB_WC_SUCCESS) {
+ switch (wc.opcode) {
+ case IB_WC_RECV:
+ mlx4_ib_multiplex_mad(ctx, &wc);
+ ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp,
+ wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1));
+ if (ret)
+ pr_err("Failed reposting tunnel "
+ "buf:%lld\n", wc.wr_id);
+ break;
+ case IB_WC_SEND:
+ pr_debug("received tunnel send completion:"
+ "wrid=0x%llx, status=0x%x\n",
+ wc.wr_id, wc.status);
+ ib_destroy_ah(tun_qp->tx_ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].ah);
+ tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah
+ = NULL;
+ spin_lock(&tun_qp->tx_lock);
+ tun_qp->tx_ix_tail++;
+ spin_unlock(&tun_qp->tx_lock);
+
+ break;
+ default:
+ break;
+ }
+ } else {
+ pr_debug("mlx4_ib: completion error in tunnel: %d."
+ " status = %d, wrid = 0x%llx\n",
+ ctx->slave, wc.status, wc.wr_id);
+ if (!MLX4_TUN_IS_RECV(wc.wr_id)) {
+ ib_destroy_ah(tun_qp->tx_ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].ah);
+ tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah
+ = NULL;
+ spin_lock(&tun_qp->tx_lock);
+ tun_qp->tx_ix_tail++;
+ spin_unlock(&tun_qp->tx_lock);
+ }
+ }
+ }
}
static void pv_qp_event_handler(struct ib_event *event, void *qp_context)
*/
static void mlx4_ib_sqp_comp_worker(struct work_struct *work)
{
- /* dummy until next patch in series */
+ struct mlx4_ib_demux_pv_ctx *ctx;
+ struct mlx4_ib_demux_pv_qp *sqp;
+ struct ib_wc wc;
+ struct ib_grh *grh;
+ struct ib_mad *mad;
+
+ ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work);
+ ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP);
+
+ while (mlx4_ib_poll_cq(ctx->cq, 1, &wc) == 1) {
+ sqp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)];
+ if (wc.status == IB_WC_SUCCESS) {
+ switch (wc.opcode) {
+ case IB_WC_SEND:
+ ib_destroy_ah(sqp->tx_ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].ah);
+ sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah
+ = NULL;
+ spin_lock(&sqp->tx_lock);
+ sqp->tx_ix_tail++;
+ spin_unlock(&sqp->tx_lock);
+ break;
+ case IB_WC_RECV:
+ mad = (struct ib_mad *) &(((struct mlx4_mad_rcv_buf *)
+ (sqp->ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->payload);
+ grh = &(((struct mlx4_mad_rcv_buf *)
+ (sqp->ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->grh);
+ mlx4_ib_demux_mad(ctx->ib_dev, ctx->port, &wc, grh, mad);
+ if (mlx4_ib_post_pv_qp_buf(ctx, sqp, wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)))
+ pr_err("Failed reposting SQP "
+ "buf:%lld\n", wc.wr_id);
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+ } else {
+ pr_debug("mlx4_ib: completion error in tunnel: %d."
+ " status = %d, wrid = 0x%llx\n",
+ ctx->slave, wc.status, wc.wr_id);
+ if (!MLX4_TUN_IS_RECV(wc.wr_id)) {
+ ib_destroy_ah(sqp->tx_ring[wc.wr_id &
+ (MLX4_NUM_TUNNEL_BUFS - 1)].ah);
+ sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah
+ = NULL;
+ spin_lock(&sqp->tx_lock);
+ sqp->tx_ix_tail++;
+ spin_unlock(&sqp->tx_lock);
+ }
+ }
+ }
}
static int alloc_pv_object(struct mlx4_ib_dev *dev, int slave, int port,
{
int ret, cq_size;
+ if (ctx->state != DEMUX_PV_STATE_DOWN)
+ return -EEXIST;
+
ctx->state = DEMUX_PV_STATE_STARTING;
/* have QP0 only on port owner, and only if link layer is IB */
if (ctx->slave == mlx4_master_func_num(to_mdev(ctx->ib_dev)->dev) &&
int ret = 0;
if (!do_init) {
+ clean_vf_mcast(&dev->sriov.demux[port - 1], slave);
/* for master, destroy real sqp resources */
if (slave == mlx4_master_func_num(dev->dev))
destroy_pv_resources(dev, slave, port,
ret = alloc_pv_object(dev, i, port, &ctx->tun[i]);
if (ret) {
ret = -ENOMEM;
- goto err_wq;
+ goto err_mcg;
}
}
+ ret = mlx4_ib_mcg_port_init(ctx);
+ if (ret) {
+ pr_err("Failed initializing mcg para-virt (%d)\n", ret);
+ goto err_mcg;
+ }
+
snprintf(name, sizeof name, "mlx4_ibt%d", port);
ctx->wq = create_singlethread_workqueue(name);
if (!ctx->wq) {
ctx->wq = NULL;
err_wq:
+ mlx4_ib_mcg_port_cleanup(ctx, 1);
+err_mcg:
for (i = 0; i < dev->dev->caps.sqp_demux; i++)
free_pv_object(dev, i, port);
kfree(ctx->tun);
int i;
if (ctx) {
struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev);
+ mlx4_ib_mcg_port_cleanup(ctx, 1);
for (i = 0; i < dev->dev->caps.sqp_demux; i++) {
if (!ctx->tun[i])
continue;
dev->sriov.is_going_down = 0;
spin_lock_init(&dev->sriov.going_down_lock);
+ mlx4_ib_cm_paravirt_init(dev);
mlx4_ib_warn(&dev->ib_dev, "multi-function enabled\n");
return 0;
}
+ for (i = 0; i < dev->dev->caps.sqp_demux; i++) {
+ if (i == mlx4_master_func_num(dev->dev))
+ mlx4_put_slave_node_guid(dev->dev, i, dev->ib_dev.node_guid);
+ else
+ mlx4_put_slave_node_guid(dev->dev, i, mlx4_ib_gen_node_guid());
+ }
+
+ err = mlx4_ib_init_alias_guid_service(dev);
+ if (err) {
+ mlx4_ib_warn(&dev->ib_dev, "Failed init alias guid process.\n");
+ goto paravirt_err;
+ }
+ err = mlx4_ib_device_register_sysfs(dev);
+ if (err) {
+ mlx4_ib_warn(&dev->ib_dev, "Failed to register sysfs\n");
+ goto sysfs_err;
+ }
+
mlx4_ib_warn(&dev->ib_dev, "initializing demux service for %d qp1 clients\n",
dev->dev->caps.sqp_demux);
for (i = 0; i < dev->num_ports; i++) {
+ union ib_gid gid;
+ err = __mlx4_ib_query_gid(&dev->ib_dev, i + 1, 0, &gid, 1);
+ if (err)
+ goto demux_err;
+ dev->sriov.demux[i].guid_cache[0] = gid.global.interface_id;
err = alloc_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1,
&dev->sriov.sqps[i]);
if (err)
mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]);
--i;
}
+ mlx4_ib_device_unregister_sysfs(dev);
+
+sysfs_err:
+ mlx4_ib_destroy_alias_guid_service(dev);
+
+paravirt_err:
+ mlx4_ib_cm_paravirt_clean(dev, -1);
return err;
}
spin_lock_irqsave(&dev->sriov.going_down_lock, flags);
dev->sriov.is_going_down = 1;
spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags);
- if (mlx4_is_master(dev->dev))
+ if (mlx4_is_master(dev->dev)) {
for (i = 0; i < dev->num_ports; i++) {
flush_workqueue(dev->sriov.demux[i].ud_wq);
mlx4_ib_free_sqp_ctx(dev->sriov.sqps[i]);
dev->sriov.sqps[i] = NULL;
mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]);
}
+
+ mlx4_ib_cm_paravirt_clean(dev, -1);
+ mlx4_ib_destroy_alias_guid_service(dev);
+ mlx4_ib_device_unregister_sysfs(dev);
+ }
}
projects / cascardo / linux.git / blobdiff