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RDMA/nldev: provide detailed CQ information 

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

Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Steve Wise 2018-03-01 13:57:51 -08:00 committed by Doug Ledford
parent 00313983cd
commit a34fc0893e
2 changed files with 60 additions and 0 deletions
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52
drivers/infiniband/core/nldev.c
View File

@ -80,6 +80,11 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_DST_ADDR] = {
.len = sizeof(struct __kernel_sockaddr_storage) },
[RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 },
};
static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
@ -359,6 +364,39 @@ static int fill_res_cm_id_entry(struct sk_buff *msg,
return -EMSGSIZE;
}
static int fill_res_cq_entry(struct sk_buff *msg, struct netlink_callback *cb,
struct rdma_restrack_entry *res, uint32_t port)
{
struct ib_cq *cq = container_of(res, struct ib_cq, res);
struct nlattr *entry_attr;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_CQ_ENTRY);
if (!entry_attr)
goto out;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT,
atomic_read(&cq->usecnt), 0))
goto err;
/* Poll context is only valid for kernel CQs */
if (rdma_is_kernel_res(res) &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx))
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)
{
@ -651,6 +689,11 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
.nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET,
.nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID,
},
[RDMA_RESTRACK_CQ] = {
.fill_res_func = fill_res_cq_entry,
.nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET,
.nldev_attr = RDMA_NLDEV_ATTR_RES_CQ,
},
};
static int res_get_common_dumpit(struct sk_buff *skb,
@ -799,6 +842,12 @@ static int nldev_res_get_cm_id_dumpit(struct sk_buff *skb,
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CM_ID);
}
static int nldev_res_get_cq_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
return res_get_common_dumpit(skb, cb, RDMA_RESTRACK_CQ);
}
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
@ -828,6 +877,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_RES_CM_ID_GET] = {
.dump = nldev_res_get_cm_id_dumpit,
},
[RDMA_NLDEV_CMD_RES_CQ_GET] = {
.dump = nldev_res_get_cq_dumpit,
},
};
void __init nldev_init(void)

8
include/uapi/rdma/rdma_netlink.h
View File

@ -240,6 +240,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_RES_CM_ID_GET, /* can dump */
RDMA_NLDEV_CMD_RES_CQ_GET, /* can dump */
RDMA_NLDEV_NUM_OPS
};
@ -364,6 +366,12 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_RES_SRC_ADDR, /* __kernel_sockaddr_storage */
RDMA_NLDEV_ATTR_RES_DST_ADDR, /* __kernel_sockaddr_storage */
RDMA_NLDEV_ATTR_RES_CQ, /* nested table */
RDMA_NLDEV_ATTR_RES_CQ_ENTRY, /* nested table */
RDMA_NLDEV_ATTR_RES_CQE, /* u32 */
RDMA_NLDEV_ATTR_RES_USECNT, /* u64 */
RDMA_NLDEV_ATTR_RES_POLL_CTX, /* u8 */
RDMA_NLDEV_ATTR_MAX
};
#endif /* _UAPI_RDMA_NETLINK_H */