From: Mark Zhang <markz@xxxxxxxxxxxx>
Provide an option to allow users to manually bind a qp with a counter
through RDMA netlink. Limit it to users with ADMIN capability only.
Signed-off-by: Mark Zhang <markz@xxxxxxxxxxxx>
Reviewed-by: Majd Dibbiny <majd@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/core/nldev.c | 111 +++++++++++++++++++++++++++----
include/rdma/rdma_counter.h | 3 +
include/uapi/rdma/rdma_netlink.h | 2 +
3 files changed, 103 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 912fe9162379..5b08a42077fd 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -1572,8 +1572,8 @@ static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
+ u32 index, port, mode, mask = 0, qpn, cntn = 0;
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
- u32 index, port, mode, mask = 0;
struct ib_device *device;
struct sk_buff *msg;
int ret;
@@ -1611,30 +1611,111 @@ static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
0, 0);
mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
- if (mode != RDMA_COUNTER_MODE_AUTO) {
- ret = -EMSGSIZE;
- goto err_msg;
+ if (mode == RDMA_COUNTER_MODE_AUTO) {
+ if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
+ mask = nla_get_u32(
+ tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
+
+ ret = rdma_counter_set_auto_mode(device, port,
+ mask ? true : false, mask);
+ if (ret)
+ goto err_msg;
+ } else {
+ qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
+ if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) {
+ cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
+ ret = rdma_counter_bind_qpn(device, port, qpn, cntn);
+ } else {
+ ret = rdma_counter_bind_qpn_alloc(device, port,
+ qpn, &cntn);
+ }
+ if (ret)
+ goto err_msg;
+
+ if (fill_nldev_handle(msg, device) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
+ ret = -EMSGSIZE;
+ goto err_fill;
+ }
+ }
+
+ nlmsg_end(msg, nlh);
+ ib_device_put(device);
+ return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
+
+err_fill:
+ rdma_counter_unbind_qpn(device, port, qpn, cntn);
+err_msg:
+ nlmsg_free(msg);
+err:
+ ib_device_put(device);
+ return ret;
+}
+
+static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
+ struct ib_device *device;
+ struct sk_buff *msg;
+ u32 index, port, qpn, cntn;
+ int ret;
+
+ ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
+ nldev_policy, extack);
+ if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] ||
+ !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] ||
+ !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] ||
+ !tb[RDMA_NLDEV_ATTR_RES_LQPN])
+ return -EINVAL;
+
+ if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
+ return -EINVAL;
+
+ index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
+ device = ib_device_get_by_index(sock_net(skb->sk), index);
+ if (!device)
+ return -EINVAL;
+
+ port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
+ if (!rdma_is_port_valid(device, port)) {
+ ret = -EINVAL;
+ goto err;
}
- if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK])
- mask = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]);
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
+ RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+ RDMA_NLDEV_CMD_STAT_SET),
+ 0, 0);
- ret = rdma_counter_set_auto_mode(device, port,
- mask ? true : false, mask);
+ cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]);
+ qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]);
+ ret = rdma_counter_unbind_qpn(device, port, qpn, cntn);
if (ret)
- goto err_msg;
+ goto err_unbind;
- if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode) ||
- nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
+ if (fill_nldev_handle(msg, device) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) {
ret = -EMSGSIZE;
- goto err_msg;
+ goto err_fill;
}
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
-err_msg:
+err_fill:
+ rdma_counter_bind_qpn(device, port, qpn, cntn);
+err_unbind:
nlmsg_free(msg);
err:
ib_device_put(device);
@@ -1700,6 +1781,10 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
.doit = nldev_res_get_counter_doit,
.dump = nldev_res_get_counter_dumpit,
},
+ [RDMA_NLDEV_CMD_STAT_DEL] = {
+ .doit = nldev_stat_del_doit,
+ .flags = RDMA_NL_ADMIN_PERM,
+ },
};
void __init nldev_init(void)
diff --git a/include/rdma/rdma_counter.h b/include/rdma/rdma_counter.h
index b79319abbdef..f485b86a318c 100644
--- a/include/rdma/rdma_counter.h
+++ b/include/rdma/rdma_counter.h
@@ -57,5 +57,8 @@ int rdma_counter_bind_qpn_alloc(struct ib_device *dev, u8 port,
u32 qp_num, u32 *counter_id);
int rdma_counter_unbind_qpn(struct ib_device *dev, u8 port,
u32 qp_num, u32 counter_id);
+int rdma_counter_get_mode(struct ib_device *dev, u8 port,
+ enum rdma_nl_counter_mode *mode,
+ enum rdma_nl_counter_mask *mask);
#endif /* _RDMA_COUNTER_H_ */
diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index fc9fb4d4b83b..74bb2648dd71 100644
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h
@@ -271,6 +271,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_STAT_GET, /* can dump */
+ RDMA_NLDEV_CMD_STAT_DEL,
+
RDMA_NLDEV_NUM_OPS
};
--
2.20.1
