projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3d2b847f MK |
1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | ||
| 3 | #include "netlink.h" | |
| 4 | #include "common.h" | |
| 5 | ||
| 6 | struct linkstate_req_info { | |
| 7 | struct ethnl_req_info base; | |
| 8 | }; | |
| 9 | ||
| 10 | struct linkstate_reply_data { | |
| 11 | struct ethnl_reply_data base; | |
| 12 | int link; | |
| 13 | }; | |
| 14 | ||
| 15 | #define LINKSTATE_REPDATA(__reply_base) \ | |
| 16 | container_of(__reply_base, struct linkstate_reply_data, base) | |
| 17 | ||
| 18 | static const struct nla_policy | |
| 19 | linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1] = { | |
| 20 | [ETHTOOL_A_LINKSTATE_UNSPEC] = { .type = NLA_REJECT }, | |
| 21 | [ETHTOOL_A_LINKSTATE_HEADER] = { .type = NLA_NESTED }, | |
| 22 | [ETHTOOL_A_LINKSTATE_LINK] = { .type = NLA_REJECT }, | |
| 23 | }; | |
| 24 | ||
| 25 | static int linkstate_prepare_data(const struct ethnl_req_info *req_base, | |
| 26 | struct ethnl_reply_data *reply_base, | |
| 27 | struct genl_info *info) | |
| 28 | { | |
| 29 | struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); | |
| 30 | struct net_device *dev = reply_base->dev; | |
| 31 | int ret; | |
| 32 | ||
| 33 | ret = ethnl_ops_begin(dev); | |
| 34 | if (ret < 0) | |
| 35 | return ret; | |
| 36 | data->link = __ethtool_get_link(dev); | |
| 37 | ethnl_ops_complete(dev); | |
| 38 | ||
| 39 | return 0; | |
| 40 | } | |
| 41 | ||
| 42 | static int linkstate_reply_size(const struct ethnl_req_info *req_base, | |
| 43 | const struct ethnl_reply_data *reply_base) | |
| 44 | { | |
| 45 | return nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */ | |
| 46 | + 0; | |
| 47 | } | |
| 48 | ||
| 49 | static int linkstate_fill_reply(struct sk_buff *skb, | |
| 50 | const struct ethnl_req_info *req_base, | |
| 51 | const struct ethnl_reply_data *reply_base) | |
| 52 | { | |
| 53 | struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); | |
| 54 | ||
| 55 | if (data->link >= 0 && | |
| 56 | nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link)) | |
| 57 | return -EMSGSIZE; | |
| 58 | ||
| 59 | return 0; | |
| 60 | } | |
| 61 | ||
| 62 | const struct ethnl_request_ops ethnl_linkstate_request_ops = { | |
| 63 | .request_cmd = ETHTOOL_MSG_LINKSTATE_GET, | |
| 64 | .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY, | |
| 65 | .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER, | |
| 66 | .max_attr = ETHTOOL_A_LINKSTATE_MAX, | |
| 67 | .req_info_size = sizeof(struct linkstate_req_info), | |
| 68 | .reply_data_size = sizeof(struct linkstate_reply_data), | |
| 69 | .request_policy = linkstate_get_policy, | |
| 70 | ||
| 71 | .prepare_data = linkstate_prepare_data, | |
| 72 | .reply_size = linkstate_reply_size, | |
| 73 | .fill_reply = linkstate_fill_reply, | |
| 74 | }; |