| 1 | |
| 2 | |
| 3 | * Copyright 2021 NXP
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| 4 |
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| 5 | #include "common.h"
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| 6 | #include "netlink.h"
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| 7 |
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| 8 | struct phc_vclocks_req_info {
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| 9 | struct ethnl_req_info base;
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| 10 | };
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| 11 |
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| 12 | struct phc_vclocks_reply_data {
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| 13 | struct ethnl_reply_data base;
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| 14 | int num;
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| 15 | int *index;
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| 16 | };
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| 17 |
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| 18 | #define PHC_VCLOCKS_REPDATA(__reply_base) \
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| 19 | container_of(__reply_base, struct phc_vclocks_reply_data, base)
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| 20 |
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| 21 | const struct nla_policy ethnl_phc_vclocks_get_policy[] = {
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| 22 | [ETHTOOL_A_PHC_VCLOCKS_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
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| 23 | };
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| 24 |
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| 25 | static int phc_vclocks_prepare_data(const struct ethnl_req_info *req_base,
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| 26 | struct ethnl_reply_data *reply_base,
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| 27 | const struct genl_info *info)
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| 28 | {
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| 29 | struct phc_vclocks_reply_data *data = PHC_VCLOCKS_REPDATA(reply_base);
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| 30 | struct net_device *dev = reply_base->dev;
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| 31 | int ret;
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| 32 |
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| 33 | ret = ethnl_ops_begin(dev);
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| 34 | if (ret < 0)
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| 35 | return ret;
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| 36 | data->num = ethtool_get_phc_vclocks(dev, &data->index);
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| 37 | ethnl_ops_complete(dev);
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| 38 |
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| 39 | return ret;
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| 40 | }
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| 41 |
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| 42 | static int phc_vclocks_reply_size(const struct ethnl_req_info *req_base,
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| 43 | const struct ethnl_reply_data *reply_base)
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| 44 | {
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| 45 | const struct phc_vclocks_reply_data *data =
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| 46 | PHC_VCLOCKS_REPDATA(reply_base);
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| 47 | int len = 0;
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| 48 |
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| 49 | if (data->num > 0) {
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| 50 | len += nla_total_size(sizeof(u32));
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| 51 | len += nla_total_size(sizeof(s32) * data->num);
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| 52 | }
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| 53 |
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| 54 | return len;
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| 55 | }
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| 56 |
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| 57 | static int phc_vclocks_fill_reply(struct sk_buff *skb,
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| 58 | const struct ethnl_req_info *req_base,
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| 59 | const struct ethnl_reply_data *reply_base)
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| 60 | {
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| 61 | const struct phc_vclocks_reply_data *data =
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| 62 | PHC_VCLOCKS_REPDATA(reply_base);
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| 63 |
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| 64 | if (data->num <= 0)
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| 65 | return 0;
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| 66 |
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| 67 | if (nla_put_u32(skb, ETHTOOL_A_PHC_VCLOCKS_NUM, data->num) ||
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| 68 | nla_put(skb, ETHTOOL_A_PHC_VCLOCKS_INDEX,
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| 69 | sizeof(s32) * data->num, data->index))
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| 70 | return -EMSGSIZE;
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| 71 |
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| 72 | return 0;
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| 73 | }
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| 74 |
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| 75 | static void phc_vclocks_cleanup_data(struct ethnl_reply_data *reply_base)
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| 76 | {
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| 77 | const struct phc_vclocks_reply_data *data =
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| 78 | PHC_VCLOCKS_REPDATA(reply_base);
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| 79 |
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| 80 | kfree(data->index);
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| 81 | }
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| 82 |
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| 83 | const struct ethnl_request_ops ethnl_phc_vclocks_request_ops = {
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| 84 | .request_cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET,
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| 85 | .reply_cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET_REPLY,
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| 86 | .hdr_attr = ETHTOOL_A_PHC_VCLOCKS_HEADER,
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| 87 | .req_info_size = sizeof(struct phc_vclocks_req_info),
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| 88 | .reply_data_size = sizeof(struct phc_vclocks_reply_data),
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| 89 |
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| 90 | .prepare_data = phc_vclocks_prepare_data,
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| 91 | .reply_size = phc_vclocks_reply_size,
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| 92 | .fill_reply = phc_vclocks_fill_reply,
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| 93 | .cleanup_data = phc_vclocks_cleanup_data,
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| 94 | };
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