#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>
+#include <rdma/ib_sa.h>
+#include <rdma/ib_cache.h>
#include <linux/mlx4/cmd.h>
#include <linux/gfp.h>
}
}
+static int mlx4_ib_demux_sa_handler(struct ib_device *ibdev, int port, int slave,
+ struct ib_sa_mad *sa_mad)
+{
+ return 0;
+}
+
+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->caps.sqp_start + 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_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)
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)
+{
+ return 0;
+}
+
+static int is_proxy_qp0(struct mlx4_ib_dev *dev, int qpn, int slave)
+{
+ int slave_start = dev->dev->caps.sqp_start + 8 * slave;
+
+ return (qpn >= slave_start && qpn <= slave_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->caps.sqp_start ||
+ wc->src_qp >= dev->dev->caps.base_tunnel_sqpn ||
+ (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->caps.sqp_start) / 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_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,
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff