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RDMA/core: Add an option to display driver-specific QPs in the rdmatool

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Utilize the -dd flag (driver-specific details) in the rdmatool
to view driver-specific QPs which are not exposed yet.

Add the netlink attribute to mark request to convey driver details and
use it to return QP subtype as a string.

$ rdma resource show qp link ibp8s0f1
link ibp8s0f1/1 lqpn 360 type UD state RTS sq-psn 0 comm [mlx5_ib]
link ibp8s0f1/1 lqpn 0 type SMI state RTS sq-psn 0 comm [ib_core]
link ibp8s0f1/1 lqpn 1 type GSI state RTS sq-psn 0 comm [ib_core]

$ rdma resource show qp link ibp8s0f1 -dd
link ibp8s0f1/1 lqpn 360 type UD state RTS sq-psn 0 comm [mlx5_ib]
link ibp8s0f1/1 lqpn 465 type DRIVER subtype REG_UMR state RTS sq-psn 0 comm [mlx5_ib]
link ibp8s0f1/1 lqpn 0 type SMI state RTS sq-psn 0 comm [ib_core]
link ibp8s0f1/1 lqpn 1 type GSI state RTS sq-psn 0 comm [ib_core]

$ rdma resource show
0: ibp8s0f0: pd 3 cq 4 qp 3 cm_id 0 mr 0 ctx 0 srq 2
1: ibp8s0f1: pd 3 cq 4 qp 3 cm_id 0 mr 0 ctx 0 srq 2

$ rdma resource show -dd
0: ibp8s0f0: pd 3 cq 4 qp 4 cm_id 0 mr 0 ctx 0 srq 2
1: ibp8s0f1: pd 3 cq 4 qp 4 cm_id 0 mr 0 ctx 0 srq 2

Signed-off-by: Chiara Meiohas <cmeiohas@nvidia.com>
Link: https://lore.kernel.org/r/2607bb3ddec3cae3443c2ea19e9f700825d20a98.1713268997.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Chiara Meiohas 2024-04-16 15:03:50 +03:00 committed by Leon Romanovsky
parent f847e84015
commit e18fa0bbce
4 changed files with 40 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/infiniband/core/nldev.c
View file

@ -137,6 +137,8 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_RES_SUBTYPE] = { .type = NLA_NUL_STRING,
.len = RDMA_NLDEV_ATTR_EMPTY_STRING },
[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_RES_SRQ] = { .type = NLA_NESTED },
@ -164,6 +166,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 },
[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = { .type = NLA_U8 },
[RDMA_NLDEV_ATTR_DRIVER_DETAILS] = { .type = NLA_U8 },
};
static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
@ -399,7 +402,8 @@ static int fill_res_info_entry(struct sk_buff *msg,
return -EMSGSIZE;
}
static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
static int fill_res_info(struct sk_buff *msg, struct ib_device *device,
bool show_details)
{
static const char * const names[RDMA_RESTRACK_MAX] = {
[RDMA_RESTRACK_PD] = "pd",
@ -424,7 +428,7 @@ static int fill_res_info(struct sk_buff *msg, struct ib_device *device)
for (i = 0; i < RDMA_RESTRACK_MAX; i++) {
if (!names[i])
continue;
curr = rdma_restrack_count(device, i);
curr = rdma_restrack_count(device, i, show_details);
ret = fill_res_info_entry(msg, names[i], curr);
if (ret)
goto err;
@ -1305,6 +1309,7 @@ static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
bool show_details = false;
struct ib_device *device;
struct sk_buff *msg;
u32 index;
@ -1320,6 +1325,9 @@ static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
if (!device)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS])
show_details = nla_get_u8(tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
@ -1334,7 +1342,7 @@ static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
goto err_free;
}
ret = fill_res_info(msg, device);
ret = fill_res_info(msg, device, show_details);
if (ret)
goto err_free;
@ -1364,7 +1372,7 @@ static int _nldev_res_get_dumpit(struct ib_device *device,
RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET),
0, NLM_F_MULTI);
if (!nlh || fill_res_info(skb, device)) {
if (!nlh || fill_res_info(skb, device, false)) {
nlmsg_cancel(skb, nlh);
goto out;
}
@ -1534,6 +1542,7 @@ static int res_get_common_dumpit(struct sk_buff *skb,
struct rdma_restrack_entry *res;
struct rdma_restrack_root *rt;
int err, ret = 0, idx = 0;
bool show_details = false;
struct nlattr *table_attr;
struct nlattr *entry_attr;
struct ib_device *device;
@ -1562,6 +1571,9 @@ static int res_get_common_dumpit(struct sk_buff *skb,
if (!device)
return -EINVAL;
if (tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS])
show_details = nla_get_u8(tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]);
/*
* If no PORT_INDEX is supplied, we will return all QPs from that device
*/
@ -1599,6 +1611,9 @@ static int res_get_common_dumpit(struct sk_buff *skb,
* objects.
*/
xa_for_each(&rt->xa, id, res) {
if (xa_get_mark(&rt->xa, res->id, RESTRACK_DD) && !show_details)
goto next;
if (idx < start || !rdma_restrack_get(res))
goto next;

12
drivers/infiniband/core/restrack.c
View file

@ -59,8 +59,10 @@ void rdma_restrack_clean(struct ib_device *dev)
* rdma_restrack_count() - the current usage of specific object
* @dev: IB device
* @type: actual type of object to operate
* @show_details: count driver specific objects
*/
int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type)
int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
bool show_details)
{
struct rdma_restrack_root *rt = &dev->res[type];
struct rdma_restrack_entry *e;
@ -68,8 +70,11 @@ int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type)
u32 cnt = 0;
xa_lock(&rt->xa);
xas_for_each(&xas, e, U32_MAX)
xas_for_each(&xas, e, U32_MAX) {
if (xa_get_mark(&rt->xa, e->id, RESTRACK_DD) && !show_details)
continue;
cnt++;
}
xa_unlock(&rt->xa);
return cnt;
}
@ -198,6 +203,9 @@ void rdma_restrack_add(struct rdma_restrack_entry *res)
ret = xa_insert(&rt->xa, res->id, res, GFP_KERNEL);
if (ret)
res->id = 0;
if (qp->qp_type >= IB_QPT_DRIVER)
xa_set_mark(&rt->xa, res->id, RESTRACK_DD);
} else if (res->type == RDMA_RESTRACK_COUNTER) {
/* Special case to ensure that cntn points to right counter */
struct rdma_counter *counter;

7
include/rdma/restrack.h
View file

@ -14,6 +14,9 @@
#include <uapi/rdma/rdma_netlink.h>
#include <linux/xarray.h>
/* Mark entry as containing driver specific details, it is used to provide QP subtype for now */
#define RESTRACK_DD XA_MARK_1
struct ib_device;
struct sk_buff;
@ -116,8 +119,8 @@ struct rdma_restrack_entry {
u32 id;
};
int rdma_restrack_count(struct ib_device *dev,
enum rdma_restrack_type type);
int rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
bool show_details);
/**
* rdma_is_kernel_res() - check the owner of resource
* @res: resource entry

6
include/uapi/rdma/rdma_netlink.h
View file

@ -558,6 +558,12 @@ enum rdma_nldev_attr {
RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE, /* u8 */
RDMA_NLDEV_ATTR_DRIVER_DETAILS, /* u8 */
/*
* QP subtype string, used for driver QPs
*/
RDMA_NLDEV_ATTR_RES_SUBTYPE, /* string */
/*
* Always the end
*/