diff options
Diffstat (limited to 'net/ethtool/privflags.c')
-rw-r--r-- | net/ethtool/privflags.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/net/ethtool/privflags.c b/net/ethtool/privflags.c index 169dd4a832f6..dfa76d552277 100644 --- a/net/ethtool/privflags.c +++ b/net/ethtool/privflags.c @@ -134,3 +134,73 @@ const struct ethnl_request_ops ethnl_privflags_request_ops = { .fill_reply = privflags_fill_reply, .cleanup_data = privflags_cleanup_data, }; + +/* PRIVFLAGS_SET */ + +static const struct nla_policy +privflags_set_policy[ETHTOOL_A_PRIVFLAGS_MAX + 1] = { + [ETHTOOL_A_PRIVFLAGS_UNSPEC] = { .type = NLA_REJECT }, + [ETHTOOL_A_PRIVFLAGS_HEADER] = { .type = NLA_NESTED }, + [ETHTOOL_A_PRIVFLAGS_FLAGS] = { .type = NLA_NESTED }, +}; + +int ethnl_set_privflags(struct sk_buff *skb, struct genl_info *info) +{ + struct nlattr *tb[ETHTOOL_A_PRIVFLAGS_MAX + 1]; + const char (*names)[ETH_GSTRING_LEN] = NULL; + struct ethnl_req_info req_info = {}; + const struct ethtool_ops *ops; + struct net_device *dev; + unsigned int nflags; + bool mod = false; + bool compact; + u32 flags; + int ret; + + ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, + ETHTOOL_A_PRIVFLAGS_MAX, privflags_set_policy, + info->extack); + if (ret < 0) + return ret; + if (!tb[ETHTOOL_A_PRIVFLAGS_FLAGS]) + return -EINVAL; + ret = ethnl_bitset_is_compact(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], &compact); + if (ret < 0) + return ret; + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_PRIVFLAGS_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + if (!ops->get_priv_flags || !ops->set_priv_flags || + !ops->get_sset_count || !ops->get_strings) + return -EOPNOTSUPP; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ret = ethnl_get_priv_flags_info(dev, &nflags, compact ? NULL : &names); + if (ret < 0) + goto out_ops; + flags = ops->get_priv_flags(dev); + + ret = ethnl_update_bitset32(&flags, nflags, + tb[ETHTOOL_A_PRIVFLAGS_FLAGS], names, + info->extack, &mod); + if (ret < 0 || !mod) + goto out_free; + ret = ops->set_priv_flags(dev, flags); + +out_free: + kfree(names); +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); + dev_put(dev); + return ret; +} |