Implement the RDMA nldev netlink interface for dumping detailed PD
information.
Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Steve Wise <swise@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/nldev.c | 57 ++++++++++++++++++++++++++++++++++++++++
include/uapi/rdma/rdma_netlink.h | 7 +++++
2 files changed, 64 insertions(+)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 4c6626e..192084c 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -91,6 +91,10 @@
[RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 },
+ [RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED },
+ [RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED },
+ [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 },
+ [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY] = { .type = NLA_U32 },
};
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
@@ -439,6 +443,45 @@ static int fill_res_mr_entry(struct sk_buff *msg, struct netlink_callback *cb,
return -EMSGSIZE;
}
+static int fill_res_pd_entry(struct sk_buff *msg, struct netlink_callback *cb,
+ struct rdma_restrack_entry *res, uint32_t port)
+{
+ struct ib_pd *pd = container_of(res, struct ib_pd, res);
+ struct nlattr *entry_attr;
+
+ entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_PD_ENTRY);
+ if (!entry_attr)
+ goto out;
+
+ if (netlink_capable(cb->skb, CAP_NET_ADMIN)) {
+ if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY,
+ pd->local_dma_lkey))
+ goto err;
+ if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
+ pd->unsafe_global_rkey))
+ goto err;
+ }
+ if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
+ atomic_read(&pd->usecnt), 0))
+ goto err;
+ if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) &&
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY,
+ pd->unsafe_global_rkey))
+ goto err;
+
+ if (fill_res_name_pid(msg, res))
+ goto err;
+
+ nla_nest_end(msg, entry_attr);
+ return 0;
+
+err:
+ nla_nest_cancel(msg, entry_attr);
+out:
+ return -EMSGSIZE;
+}
+
static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@@ -741,6 +784,11 @@ struct nldev_fill_res_entry {
.nldev_cmd = RDMA_NLDEV_CMD_RES_MR_GET,
.nldev_attr = RDMA_NLDEV_ATTR_RES_MR,
},
+ [RDMA_RESTRACK_PD] = {
+ .fill_res_func = fill_res_pd_entry,
+ .nldev_cmd = RDMA_NLDEV_CMD_RES_PD_GET,
+ .nldev_attr = RDMA_NLDEV_ATTR_RES_PD,
+ },
};
static int res_get_common_dumpit(struct sk_buff *skb,
@@ -901,6 +949,12 @@ static int nldev_res_get_mr_dumpit(struct sk_buff *skb,
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR);
}
+static int nldev_res_get_pd_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_PD);
+}
+
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
@@ -936,6 +990,9 @@ static int nldev_res_get_mr_dumpit(struct sk_buff *skb,
[RDMA_NLDEV_CMD_RES_MR_GET] = {
.dump = nldev_res_get_mr_dumpit,
},
+ [RDMA_NLDEV_CMD_RES_PD_GET] = {
+ .dump = nldev_res_get_pd_dumpit,
+ },
};
void __init nldev_init(void)
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index 6d9ec38..351139c 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h
@@ -244,6 +244,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_RES_MR_GET, /* can dump */
+ RDMA_NLDEV_CMD_RES_PD_GET, /* can dump */
+
RDMA_NLDEV_NUM_OPS
};
@@ -381,6 +383,11 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_RES_IOVA, /* u64 */
RDMA_NLDEV_ATTR_RES_MRLEN, /* u64 */
+ RDMA_NLDEV_ATTR_RES_PD, /* nested table */
+ RDMA_NLDEV_ATTR_RES_PD_ENTRY, /* nested table */
+ RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY, /* u32 */
+ RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY, /* u32 */
+
RDMA_NLDEV_ATTR_MAX
};
#endif /* _UAPI_RDMA_NETLINK_H */
--
1.8.3.1
--
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