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RDMA/nldev: provide detailed PD information 

Implement the RDMA nldev netlink interface for dumping detailed PD
information.

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hifive-unleashed-5.1
Steve Wise 2018-03-01 13:58:28 -08:00 committed by Doug Ledford
parent 5292443431
commit 29cf1351d4
2 changed files with 64 additions and 0 deletions
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57
drivers/infiniband/core/nldev.c
View File

@ -91,6 +91,10 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[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 @@ out:
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 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
.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 const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[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)

7
include/uapi/rdma/rdma_netlink.h
View File

@ -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 */