From 51ea22b04ea0c210f9ce87b8a600965dbe476bc2 Mon Sep 17 00:00:00 2001 From: Michal Kubecek Date: Sun, 26 Jan 2020 23:11:13 +0100 Subject: ethtool: provide WoL settings with WOL_GET request Implement WOL_GET request to get wake-on-lan settings for a device, traditionally available via ETHTOOL_GWOL ioctl request. As part of the implementation, provide symbolic names for wake-on-line modes as ETH_SS_WOL_MODES string set. Signed-off-by: Michal Kubecek Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- net/ethtool/Makefile | 2 +- net/ethtool/common.c | 12 +++++++ net/ethtool/common.h | 1 + net/ethtool/netlink.c | 9 +++++ net/ethtool/netlink.h | 1 + net/ethtool/strset.c | 5 +++ net/ethtool/wol.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 128 insertions(+), 1 deletion(-) create mode 100644 net/ethtool/wol.c (limited to 'net') diff --git a/net/ethtool/Makefile b/net/ethtool/Makefile index c120c820a4f5..424545a4aaec 100644 --- a/net/ethtool/Makefile +++ b/net/ethtool/Makefile @@ -5,4 +5,4 @@ obj-y += ioctl.o common.o obj-$(CONFIG_ETHTOOL_NETLINK) += ethtool_nl.o ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o \ - linkstate.o debug.o + linkstate.o debug.o wol.o diff --git a/net/ethtool/common.c b/net/ethtool/common.c index aa1183a65a76..636ec6d5110e 100644 --- a/net/ethtool/common.c +++ b/net/ethtool/common.c @@ -190,6 +190,18 @@ const char netif_msg_class_names[][ETH_GSTRING_LEN] = { }; static_assert(ARRAY_SIZE(netif_msg_class_names) == NETIF_MSG_CLASS_COUNT); +const char wol_mode_names[][ETH_GSTRING_LEN] = { + [const_ilog2(WAKE_PHY)] = "phy", + [const_ilog2(WAKE_UCAST)] = "ucast", + [const_ilog2(WAKE_MCAST)] = "mcast", + [const_ilog2(WAKE_BCAST)] = "bcast", + [const_ilog2(WAKE_ARP)] = "arp", + [const_ilog2(WAKE_MAGIC)] = "magic", + [const_ilog2(WAKE_MAGICSECURE)] = "magicsecure", + [const_ilog2(WAKE_FILTER)] = "filter", +}; +static_assert(ARRAY_SIZE(wol_mode_names) == WOL_MODE_COUNT); + /* return false if legacy contained non-0 deprecated fields * maxtxpkt/maxrxpkt. rest of ksettings always updated */ diff --git a/net/ethtool/common.h b/net/ethtool/common.h index 064c5c3aa990..40ba74e0b9bb 100644 --- a/net/ethtool/common.h +++ b/net/ethtool/common.h @@ -20,6 +20,7 @@ extern const char phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN]; extern const char link_mode_names[][ETH_GSTRING_LEN]; extern const char netif_msg_class_names[][ETH_GSTRING_LEN]; +extern const char wol_mode_names[][ETH_GSTRING_LEN]; int __ethtool_get_link(struct net_device *dev); diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index 9a0a6c2f8dbb..eeb6d8594e1b 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -214,6 +214,7 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, + [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, }; static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) @@ -679,6 +680,14 @@ static const struct genl_ops ethtool_genl_ops[] = { .flags = GENL_UNS_ADMIN_PERM, .doit = ethnl_set_debug, }, + { + .cmd = ETHTOOL_MSG_WOL_GET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + }, }; static const struct genl_multicast_group ethtool_nl_mcgrps[] = { diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index 772723e536e8..9fcd6f87b396 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -335,6 +335,7 @@ extern const struct ethnl_request_ops ethnl_linkinfo_request_ops; extern const struct ethnl_request_ops ethnl_linkmodes_request_ops; extern const struct ethnl_request_ops ethnl_linkstate_request_ops; extern const struct ethnl_request_ops ethnl_debug_request_ops; +extern const struct ethnl_request_ops ethnl_wol_request_ops; int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info); int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info); diff --git a/net/ethtool/strset.c b/net/ethtool/strset.c index 7a45c25355b8..8e5911887b4c 100644 --- a/net/ethtool/strset.c +++ b/net/ethtool/strset.c @@ -55,6 +55,11 @@ static const struct strset_info info_template[] = { .count = NETIF_MSG_CLASS_COUNT, .strings = netif_msg_class_names, }, + [ETH_SS_WOL_MODES] = { + .per_dev = false, + .count = WOL_MODE_COUNT, + .strings = wol_mode_names, + }, }; struct strset_req_info { diff --git a/net/ethtool/wol.c b/net/ethtool/wol.c new file mode 100644 index 000000000000..7c9a1ef622ce --- /dev/null +++ b/net/ethtool/wol.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct wol_req_info { + struct ethnl_req_info base; +}; + +struct wol_reply_data { + struct ethnl_reply_data base; + struct ethtool_wolinfo wol; + bool show_sopass; +}; + +#define WOL_REPDATA(__reply_base) \ + container_of(__reply_base, struct wol_reply_data, base) + +static const struct nla_policy +wol_get_policy[ETHTOOL_A_WOL_MAX + 1] = { + [ETHTOOL_A_WOL_UNSPEC] = { .type = NLA_REJECT }, + [ETHTOOL_A_WOL_HEADER] = { .type = NLA_NESTED }, + [ETHTOOL_A_WOL_MODES] = { .type = NLA_REJECT }, + [ETHTOOL_A_WOL_SOPASS] = { .type = NLA_REJECT }, +}; + +static int wol_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct wol_reply_data *data = WOL_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_wol) + return -EOPNOTSUPP; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + dev->ethtool_ops->get_wol(dev, &data->wol); + ethnl_ops_complete(dev); + data->show_sopass = data->wol.supported & WAKE_MAGICSECURE; + + return 0; +} + +static int wol_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct wol_reply_data *data = WOL_REPDATA(reply_base); + int len; + + len = ethnl_bitset32_size(&data->wol.wolopts, &data->wol.supported, + WOL_MODE_COUNT, wol_mode_names, compact); + if (len < 0) + return len; + if (data->show_sopass) + len += nla_total_size(sizeof(data->wol.sopass)); + + return len; +} + +static int wol_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct wol_reply_data *data = WOL_REPDATA(reply_base); + int ret; + + ret = ethnl_put_bitset32(skb, ETHTOOL_A_WOL_MODES, &data->wol.wolopts, + &data->wol.supported, WOL_MODE_COUNT, + wol_mode_names, compact); + if (ret < 0) + return ret; + if (data->show_sopass && + nla_put(skb, ETHTOOL_A_WOL_SOPASS, sizeof(data->wol.sopass), + data->wol.sopass)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_wol_request_ops = { + .request_cmd = ETHTOOL_MSG_WOL_GET, + .reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY, + .hdr_attr = ETHTOOL_A_WOL_HEADER, + .max_attr = ETHTOOL_A_WOL_MAX, + .req_info_size = sizeof(struct wol_req_info), + .reply_data_size = sizeof(struct wol_reply_data), + .request_policy = wol_get_policy, + + .prepare_data = wol_prepare_data, + .reply_size = wol_reply_size, + .fill_reply = wol_fill_reply, +}; -- cgit v1.2.3