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SubjectRe: [PATCH v4 10/27] IB/Verbs: Reform cm related part in IB-core cma/ucm


On 04/16/2015 03:10 PM, Hal Rosenstock wrote:
> On 4/16/2015 4:08 AM, Michael Wang wrote:
>>
>> Use raw management helpers to reform cm related part in IB-core cma/ucm.
>>
>> These checks focus on the device cm type rather than the port capability,
>> directly pass port 1 works currently, but can't support mixing cm type
>> device in future.
>
> This is equivalent to today where the checks are per node rather than
> per port.
>
> Should all checks here be port 1 based or only certain ones like listen
> ? For example, in connect/reject/disconnect, don't we already have port
> ? Guess this can be dealt with later as this is not a regression from
> the current implementation.

Yeah, these parts of cma may need more carve in future, like some new callback
for different CM type as Sean suggested.

Maybe directly using 1 could help to highlight the problem ;-)

Regards,
Michael Wanga

>
> -- Hal
>
>>
>> Cc: Steve Wise <swise@opengridcomputing.com>
>> Cc: Tom Talpey <tom@talpey.com>
>> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
>> Cc: Doug Ledford <dledford@redhat.com>
>> Cc: Ira Weiny <ira.weiny@intel.com>
>> Cc: Sean Hefty <sean.hefty@intel.com>
>> Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
>> ---
>> drivers/infiniband/core/cma.c | 81 +++++++++++++------------------------------
>> drivers/infiniband/core/ucm.c | 3 +-
>> 2 files changed, 26 insertions(+), 58 deletions(-)
>>
>> diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
>> index d570030..6b8a64d 100644
>> --- a/drivers/infiniband/core/cma.c
>> +++ b/drivers/infiniband/core/cma.c
>> @@ -735,8 +735,7 @@ int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
>> int ret = 0;
>>
>> id_priv = container_of(id, struct rdma_id_private, id);
>> - switch (rdma_node_get_transport(id_priv->id.device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id_priv->id.device, 1)) {
>> if (!id_priv->cm_id.ib || (id_priv->id.qp_type == IB_QPT_UD))
>> ret = cma_ib_init_qp_attr(id_priv, qp_attr, qp_attr_mask);
>> else
>> @@ -745,19 +744,15 @@ int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
>>
>> if (qp_attr->qp_state == IB_QPS_RTR)
>> qp_attr->rq_psn = id_priv->seq_num;
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id_priv->id.device, 1)) {
>> if (!id_priv->cm_id.iw) {
>> qp_attr->qp_access_flags = 0;
>> *qp_attr_mask = IB_QP_STATE | IB_QP_ACCESS_FLAGS;
>> } else
>> ret = iw_cm_init_qp_attr(id_priv->cm_id.iw, qp_attr,
>> qp_attr_mask);
>> - break;
>> - default:
>> + } else
>> ret = -ENOSYS;
>> - break;
>> - }
>>
>> return ret;
>> }
>> @@ -1037,17 +1032,12 @@ void rdma_destroy_id(struct rdma_cm_id *id)
>> mutex_unlock(&id_priv->handler_mutex);
>>
>> if (id_priv->cma_dev) {
>> - switch (rdma_node_get_transport(id_priv->id.device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id_priv->id.device, 1)) {
>> if (id_priv->cm_id.ib)
>> ib_destroy_cm_id(id_priv->cm_id.ib);
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id_priv->id.device, 1)) {
>> if (id_priv->cm_id.iw)
>> iw_destroy_cm_id(id_priv->cm_id.iw);
>> - break;
>> - default:
>> - break;
>> }
>> cma_leave_mc_groups(id_priv);
>> cma_release_dev(id_priv);
>> @@ -1626,7 +1616,7 @@ static void cma_listen_on_dev(struct rdma_id_private *id_priv,
>> int ret;
>>
>> if (cma_family(id_priv) == AF_IB &&
>> - rdma_node_get_transport(cma_dev->device->node_type) != RDMA_TRANSPORT_IB)
>> + !rdma_ib_or_iboe(cma_dev->device, 1))
>> return;
>>
>> id = rdma_create_id(cma_listen_handler, id_priv, id_priv->id.ps,
>> @@ -2028,7 +2018,7 @@ static int cma_bind_loopback(struct rdma_id_private *id_priv)
>> mutex_lock(&lock);
>> list_for_each_entry(cur_dev, &dev_list, list) {
>> if (cma_family(id_priv) == AF_IB &&
>> - rdma_node_get_transport(cur_dev->device->node_type) != RDMA_TRANSPORT_IB)
>> + !rdma_ib_or_iboe(cur_dev->device, 1))
>> continue;
>>
>> if (!cma_dev)
>> @@ -2060,7 +2050,7 @@ port_found:
>> goto out;
>>
>> id_priv->id.route.addr.dev_addr.dev_type =
>> - (rdma_port_get_link_layer(cma_dev->device, p) == IB_LINK_LAYER_INFINIBAND) ?
>> + (rdma_tech_ib(cma_dev->device, p)) ?
>> ARPHRD_INFINIBAND : ARPHRD_ETHER;
>>
>> rdma_addr_set_sgid(&id_priv->id.route.addr.dev_addr, &gid);
>> @@ -2537,18 +2527,15 @@ int rdma_listen(struct rdma_cm_id *id, int backlog)
>>
>> id_priv->backlog = backlog;
>> if (id->device) {
>> - switch (rdma_node_get_transport(id->device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id->device, 1)) {
>> ret = cma_ib_listen(id_priv);
>> if (ret)
>> goto err;
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id->device, 1)) {
>> ret = cma_iw_listen(id_priv, backlog);
>> if (ret)
>> goto err;
>> - break;
>> - default:
>> + } else {
>> ret = -ENOSYS;
>> goto err;
>> }
>> @@ -2884,20 +2871,15 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
>> id_priv->srq = conn_param->srq;
>> }
>>
>> - switch (rdma_node_get_transport(id->device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id->device, 1)) {
>> if (id->qp_type == IB_QPT_UD)
>> ret = cma_resolve_ib_udp(id_priv, conn_param);
>> else
>> ret = cma_connect_ib(id_priv, conn_param);
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id->device, 1))
>> ret = cma_connect_iw(id_priv, conn_param);
>> - break;
>> - default:
>> + else
>> ret = -ENOSYS;
>> - break;
>> - }
>> if (ret)
>> goto err;
>>
>> @@ -3000,8 +2982,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
>> id_priv->srq = conn_param->srq;
>> }
>>
>> - switch (rdma_node_get_transport(id->device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id->device, 1)) {
>> if (id->qp_type == IB_QPT_UD) {
>> if (conn_param)
>> ret = cma_send_sidr_rep(id_priv, IB_SIDR_SUCCESS,
>> @@ -3017,14 +2998,10 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
>> else
>> ret = cma_rep_recv(id_priv);
>> }
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id->device, 1))
>> ret = cma_accept_iw(id_priv, conn_param);
>> - break;
>> - default:
>> + else
>> ret = -ENOSYS;
>> - break;
>> - }
>>
>> if (ret)
>> goto reject;
>> @@ -3068,8 +3045,7 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
>> if (!id_priv->cm_id.ib)
>> return -EINVAL;
>>
>> - switch (rdma_node_get_transport(id->device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id->device, 1)) {
>> if (id->qp_type == IB_QPT_UD)
>> ret = cma_send_sidr_rep(id_priv, IB_SIDR_REJECT, 0,
>> private_data, private_data_len);
>> @@ -3077,15 +3053,12 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
>> ret = ib_send_cm_rej(id_priv->cm_id.ib,
>> IB_CM_REJ_CONSUMER_DEFINED, NULL,
>> 0, private_data, private_data_len);
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id->device, 1)) {
>> ret = iw_cm_reject(id_priv->cm_id.iw,
>> private_data, private_data_len);
>> - break;
>> - default:
>> + } else
>> ret = -ENOSYS;
>> - break;
>> - }
>> +
>> return ret;
>> }
>> EXPORT_SYMBOL(rdma_reject);
>> @@ -3099,22 +3072,18 @@ int rdma_disconnect(struct rdma_cm_id *id)
>> if (!id_priv->cm_id.ib)
>> return -EINVAL;
>>
>> - switch (rdma_node_get_transport(id->device->node_type)) {
>> - case RDMA_TRANSPORT_IB:
>> + if (rdma_ib_or_iboe(id->device, 1)) {
>> ret = cma_modify_qp_err(id_priv);
>> if (ret)
>> goto out;
>> /* Initiate or respond to a disconnect. */
>> if (ib_send_cm_dreq(id_priv->cm_id.ib, NULL, 0))
>> ib_send_cm_drep(id_priv->cm_id.ib, NULL, 0);
>> - break;
>> - case RDMA_TRANSPORT_IWARP:
>> + } else if (rdma_tech_iwarp(id->device, 1)) {
>> ret = iw_cm_disconnect(id_priv->cm_id.iw, 0);
>> - break;
>> - default:
>> + } else
>> ret = -EINVAL;
>> - break;
>> - }
>> +
>> out:
>> return ret;
>> }
>> diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
>> index f2f6393..70e0ccb 100644
>> --- a/drivers/infiniband/core/ucm.c
>> +++ b/drivers/infiniband/core/ucm.c
>> @@ -1253,8 +1253,7 @@ static void ib_ucm_add_one(struct ib_device *device)
>> dev_t base;
>> struct ib_ucm_device *ucm_dev;
>>
>> - if (!device->alloc_ucontext ||
>> - rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
>> + if (!device->alloc_ucontext || !rdma_ib_or_iboe(device, 1))
>> return;
>>
>> ucm_dev = kzalloc(sizeof *ucm_dev, GFP_KERNEL);
>


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