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RDMA/nldev: Allow counter auto mode configration through RDMA netlink 

Provide an option to enable/disable per-port counter auto mode through
RDMA netlink. Limit it to users with ADMIN capability only.

Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Mark Zhang 2019-07-02 13:02:39 +03:00 committed by Jason Gunthorpe
parent 45842fc627
commit b47ae6f803
2 changed files with 86 additions and 0 deletions
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78
drivers/infiniband/core/nldev.c
View File

@ -126,6 +126,9 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 },
[RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 },
@ -1482,6 +1485,78 @@ static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
return err;
}
static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
u32 index, port, mode, mask = 0;
struct ib_device *device;
struct sk_buff *msg;
int ret;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
/* Currently only counter for QP is supported */
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_MODE])
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;
}
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);
mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
if (mode != RDMA_COUNTER_MODE_AUTO) {
ret = -EMSGSIZE;
goto err_msg;
}
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;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) {
ret = -EMSGSIZE;
goto err_msg;
}
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(msg, NETLINK_CB(skb).portid);
err_msg:
nlmsg_free(msg);
err:
ib_device_put(device);
return ret;
}
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
@ -1535,6 +1610,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
},
[RDMA_NLDEV_CMD_SYS_SET] = {
.doit = nldev_set_sys_set_doit,
},
[RDMA_NLDEV_CMD_STAT_SET] = {
.doit = nldev_stat_set_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
};

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

@ -281,6 +281,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_GET_CHARDEV,
RDMA_NLDEV_CMD_STAT_SET,
RDMA_NLDEV_NUM_OPS
};
@ -488,6 +490,12 @@ enum rdma_nldev_attr {
* File descriptor handle of the net namespace object
*/
RDMA_NLDEV_NET_NS_FD, /* u32 */
/*
* Counter-specific attributes.
*/
RDMA_NLDEV_ATTR_STAT_MODE, /* u32 */
RDMA_NLDEV_ATTR_STAT_RES, /* u32 */
RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, /* u32 */
/*
* Information about a chardev.