[PATCH rdma-next v4 08/13] RDMA/nldev: Split nldev_stat_set_mode_doit out of nldev_stat_set_doit

Mark Zhang
2021-10-08T12:26:40Z

In order to allow expansion of the set command with more set options,
take the set mode out of the main set function.

Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
---
drivers/infiniband/core/nldev.c | 116 +++++++++++++++++++-------------
1 file changed, 70 insertions(+), 46 deletions(-)

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 210057fef7bd..8361eb08e13b 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -1897,24 +1897,67 @@ static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
return err;
}

+static int nldev_stat_set_mode_doit(struct sk_buff *msg,
+ struct netlink_ext_ack *extack,
+ struct nlattr *tb[],
+ struct ib_device *device, u32 port)
+{
+ u32 mode, mask = 0, qpn, cntn = 0;
+ int ret;
+
+ /* Currently only counter for QP is supported */
+ if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP)
+ return -EINVAL;
+
+ mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]);
+ 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]);
+ return rdma_counter_set_auto_mode(device, port, mask, extack);
+ }
+
+ if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
+ return -EINVAL;
+
+ 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);
+ if (ret)
+ return ret;
+ } else {
+ ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn);
+ if (ret)
+ return ret;
+ }
+
+ if (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;
+ }
+
+ return 0;
+
+err_fill:
+ rdma_counter_unbind_qpn(device, port, qpn, cntn);
+ return ret;
+}
+
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];
struct ib_device *device;
struct sk_buff *msg;
+ u32 index, port;
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)
+ ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy,
+ extack);
+ if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
+ !tb[RDMA_NLDEV_ATTR_PORT_INDEX])
return -EINVAL;

index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
@@ -1925,59 +1968,40 @@ static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]);
if (!rdma_is_port_valid(device, port)) {
ret = -EINVAL;
- goto err;
+ goto err_put_device;
+ }
+
+ if (!tb[RDMA_NLDEV_ATTR_STAT_MODE]) {
+ ret = -EINVAL;
+ goto err_put_device;
}

msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
ret = -ENOMEM;
- goto err;
+ goto err_put_device;
}
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) {
- 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, extack);
- if (ret)
- goto err_msg;
- } else {
- if (!tb[RDMA_NLDEV_ATTR_RES_LQPN])
- goto err_msg;
- 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;
- }
+ if (fill_nldev_handle(msg, device) ||
+ nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) {
+ ret = -EMSGSIZE;
+ goto err_free_msg;
}

+ ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port);
+ if (ret)
+ goto err_free_msg;
+
nlmsg_end(msg, nlh);
ib_device_put(device);
return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);

-err_fill:
- rdma_counter_unbind_qpn(device, port, qpn, cntn);
-err_msg:
+err_free_msg:
nlmsg_free(msg);
-err:
+err_put_device:
ib_device_put(device);
return ret;
}
--
2.26.2