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iw_cxgb4: provide detailed provider-specific CM_ID information 

Add a table of important fields from the c4iw_ep* structures to the cm_id
resource tracking table.  This is helpful in debugging.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2018-05-10 07:31:43 -07:00 committed by Jason Gunthorpe
parent fbdb0a9181
commit 116aeb8873
1 changed files with 84 additions and 0 deletions
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84
drivers/infiniband/hw/cxgb4/restrack.c
View File

@ -30,6 +30,8 @@
* SOFTWARE.
*/
#include <rdma/rdma_cm.h>
#include "iw_cxgb4.h"
#include <rdma/restrack.h>
#include <uapi/rdma/rdma_netlink.h>
@ -188,6 +190,88 @@ err:
return -EMSGSIZE;
}
union union_ep {
struct c4iw_listen_ep lep;
struct c4iw_ep ep;
};
static int fill_res_ep_entry(struct sk_buff *msg,
struct rdma_restrack_entry *res)
{
struct rdma_cm_id *cm_id = rdma_res_to_id(res);
struct nlattr *table_attr;
struct c4iw_ep_common *epcp;
struct c4iw_listen_ep *listen_ep = NULL;
struct c4iw_ep *ep = NULL;
struct iw_cm_id *iw_cm_id;
union union_ep *uep;
iw_cm_id = rdma_iw_cm_id(cm_id);
if (!iw_cm_id)
return 0;
epcp = (struct c4iw_ep_common *)iw_cm_id->provider_data;
if (!epcp)
return 0;
uep = kcalloc(1, sizeof(*uep), GFP_KERNEL);
if (!uep)
return 0;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
if (!table_attr)
goto err_free_uep;
/* Get a consistent snapshot */
mutex_lock(&epcp->mutex);
if (epcp->state == LISTEN) {
uep->lep = *(struct c4iw_listen_ep *)epcp;
mutex_unlock(&epcp->mutex);
listen_ep = &uep->lep;
epcp = &listen_ep->com;
} else {
uep->ep = *(struct c4iw_ep *)epcp;
mutex_unlock(&epcp->mutex);
ep = &uep->ep;
epcp = &ep->com;
}
if (rdma_nl_put_driver_u32(msg, "state", epcp->state))
goto err_cancel_table;
if (rdma_nl_put_driver_u64_hex(msg, "flags", epcp->flags))
goto err_cancel_table;
if (rdma_nl_put_driver_u64_hex(msg, "history", epcp->history))
goto err_cancel_table;
if (epcp->state == LISTEN) {
if (rdma_nl_put_driver_u32(msg, "stid", listen_ep->stid))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "backlog", listen_ep->backlog))
goto err_cancel_table;
} else {
if (rdma_nl_put_driver_u32(msg, "hwtid", ep->hwtid))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "ord", ep->ord))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "ird", ep->ird))
goto err_cancel_table;
if (rdma_nl_put_driver_u32(msg, "emss", ep->emss))
goto err_cancel_table;
if (!ep->parent_ep && rdma_nl_put_driver_u32(msg, "atid",
ep->atid))
goto err_cancel_table;
}
nla_nest_end(msg, table_attr);
kfree(uep);
return 0;
err_cancel_table:
nla_nest_cancel(msg, table_attr);
err_free_uep:
kfree(uep);
return -EMSGSIZE;
}
c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {
[RDMA_RESTRACK_QP] = fill_res_qp_entry,
[RDMA_RESTRACK_CM_ID] = fill_res_ep_entry,
};