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Date: Tue, 27 Sep 2022 21:06:53 +0800
From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
To: intel-wired-lan@...osl.org
Cc: netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
edumazet@...gle.com, muhammad.husaini.zulkifli@...el.com,
vinicius.gomes@...el.com, aravindhan.gunasekaran@...el.com,
noor.azura.ahmad.tarmizi@...el.com
Subject: [PATCH v1 1/4] ethtool: Add new hwtstamp flag
This add patch add a new DMA Time Stamp flag. User can configure
hwtstamp_config with this flag if they want to use DMA time stamp.
Suggested-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
---
include/uapi/linux/ethtool.h | 3 +++
include/uapi/linux/ethtool_netlink.h | 1 +
include/uapi/linux/net_tstamp.h | 5 ++++-
net/ethtool/common.c | 6 ++++++
net/ethtool/common.h | 2 ++
net/ethtool/strset.c | 5 +++++
net/ethtool/tsinfo.c | 17 +++++++++++++++++
7 files changed, 38 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index fe9893d1485d..07ca8d496e1a 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -675,6 +675,7 @@ enum ethtool_link_ext_substate_module {
* @ETH_SS_MSG_CLASSES: debug message class names
* @ETH_SS_WOL_MODES: wake-on-lan modes
* @ETH_SS_SOF_TIMESTAMPING: SOF_TIMESTAMPING_* flags
+ * @ETH_SS_HWTSTAMP_FLAG: timestamping flags
* @ETH_SS_TS_TX_TYPES: timestamping Tx types
* @ETH_SS_TS_RX_FILTERS: timestamping Rx filters
* @ETH_SS_UDP_TUNNEL_TYPES: UDP tunnel types
@@ -700,6 +701,7 @@ enum ethtool_stringset {
ETH_SS_MSG_CLASSES,
ETH_SS_WOL_MODES,
ETH_SS_SOF_TIMESTAMPING,
+ ETH_SS_HWTSTAMP_FLAG,
ETH_SS_TS_TX_TYPES,
ETH_SS_TS_RX_FILTERS,
ETH_SS_UDP_TUNNEL_TYPES,
@@ -1367,6 +1369,7 @@ struct ethtool_ts_info {
__u32 cmd;
__u32 so_timestamping;
__s32 phc_index;
+ __u32 flag;
__u32 tx_types;
__u32 tx_reserved[3];
__u32 rx_filters;
diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h
index 408a664fad59..58d073b5a6d2 100644
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -452,6 +452,7 @@ enum {
ETHTOOL_A_TSINFO_UNSPEC,
ETHTOOL_A_TSINFO_HEADER, /* nest - _A_HEADER_* */
ETHTOOL_A_TSINFO_TIMESTAMPING, /* bitset */
+ ETHTOOL_A_TSINFO_FLAG, /* bitset */
ETHTOOL_A_TSINFO_TX_TYPES, /* bitset */
ETHTOOL_A_TSINFO_RX_FILTERS, /* bitset */
ETHTOOL_A_TSINFO_PHC_INDEX, /* u32 */
diff --git a/include/uapi/linux/net_tstamp.h b/include/uapi/linux/net_tstamp.h
index 55501e5e7ac8..4966d5ca521f 100644
--- a/include/uapi/linux/net_tstamp.h
+++ b/include/uapi/linux/net_tstamp.h
@@ -89,7 +89,10 @@ enum hwtstamp_flags {
HWTSTAMP_FLAG_BONDED_PHC_INDEX = (1<<0),
#define HWTSTAMP_FLAG_BONDED_PHC_INDEX HWTSTAMP_FLAG_BONDED_PHC_INDEX
- HWTSTAMP_FLAG_LAST = HWTSTAMP_FLAG_BONDED_PHC_INDEX,
+ HWTSTAMP_FLAG_DMA_TIMESTAMP = (1<<1),
+#define HWTSTAMP_FLAG_DMA_TIMESTAMP HWTSTAMP_FLAG_DMA_TIMESTAMP
+
+ HWTSTAMP_FLAG_LAST = HWTSTAMP_FLAG_DMA_TIMESTAMP,
HWTSTAMP_FLAG_MASK = (HWTSTAMP_FLAG_LAST - 1) | HWTSTAMP_FLAG_LAST
};
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 566adf85e658..f2a178d162ef 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -406,6 +406,12 @@ const char sof_timestamping_names[][ETH_GSTRING_LEN] = {
};
static_assert(ARRAY_SIZE(sof_timestamping_names) == __SOF_TIMESTAMPING_CNT);
+const char ts_flag_names[][ETH_GSTRING_LEN] = {
+ [const_ilog2(HWTSTAMP_FLAG_BONDED_PHC_INDEX)] = "bonded-phc-index",
+ [const_ilog2(HWTSTAMP_FLAG_DMA_TIMESTAMP)] = "dma-time-stamp",
+};
+static_assert(ARRAY_SIZE(ts_flag_names) == __HWTSTAMP_FLAG_CNT);
+
const char ts_tx_type_names[][ETH_GSTRING_LEN] = {
[HWTSTAMP_TX_OFF] = "off",
[HWTSTAMP_TX_ON] = "on",
diff --git a/net/ethtool/common.h b/net/ethtool/common.h
index 2dc2b80aea5f..39fedceb82ca 100644
--- a/net/ethtool/common.h
+++ b/net/ethtool/common.h
@@ -13,6 +13,7 @@
ETHTOOL_LINK_MODE_ ## speed ## base ## type ## _ ## duplex ## _BIT
#define __SOF_TIMESTAMPING_CNT (const_ilog2(SOF_TIMESTAMPING_LAST) + 1)
+#define __HWTSTAMP_FLAG_CNT (const_ilog2(HWTSTAMP_FLAG_LAST) + 1)
struct link_mode_info {
int speed;
@@ -33,6 +34,7 @@ extern const struct link_mode_info link_mode_params[];
extern const char netif_msg_class_names[][ETH_GSTRING_LEN];
extern const char wol_mode_names[][ETH_GSTRING_LEN];
extern const char sof_timestamping_names[][ETH_GSTRING_LEN];
+extern const char ts_flag_names[][ETH_GSTRING_LEN];
extern const char ts_tx_type_names[][ETH_GSTRING_LEN];
extern const char ts_rx_filter_names[][ETH_GSTRING_LEN];
extern const char udp_tunnel_type_names[][ETH_GSTRING_LEN];
diff --git a/net/ethtool/strset.c b/net/ethtool/strset.c
index 3f7de54d85fb..2c26cfece494 100644
--- a/net/ethtool/strset.c
+++ b/net/ethtool/strset.c
@@ -65,6 +65,11 @@ static const struct strset_info info_template[] = {
.count = __SOF_TIMESTAMPING_CNT,
.strings = sof_timestamping_names,
},
+ [ETH_SS_HWTSTAMP_FLAG] = {
+ .per_dev = false,
+ .count = __HWTSTAMP_FLAG_CNT,
+ .strings = ts_flag_names,
+ },
[ETH_SS_TS_TX_TYPES] = {
.per_dev = false,
.count = __HWTSTAMP_TX_CNT,
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c
index 63b5814bd460..84aa15445944 100644
--- a/net/ethtool/tsinfo.c
+++ b/net/ethtool/tsinfo.c
@@ -50,6 +50,7 @@ static int tsinfo_reply_size(const struct ethnl_req_info *req_base,
int ret;
BUILD_BUG_ON(__SOF_TIMESTAMPING_CNT > 32);
+ BUILD_BUG_ON(__HWTSTAMP_FLAG_CNT > 32);
BUILD_BUG_ON(__HWTSTAMP_TX_CNT > 32);
BUILD_BUG_ON(__HWTSTAMP_FILTER_CNT > 32);
@@ -61,6 +62,14 @@ static int tsinfo_reply_size(const struct ethnl_req_info *req_base,
return ret;
len += ret; /* _TSINFO_TIMESTAMPING */
}
+ if (ts_info->flag) {
+ ret = ethnl_bitset32_size(&ts_info->flag, NULL,
+ __HWTSTAMP_FLAG_CNT,
+ ts_flag_names, compact);
+ if (ret < 0)
+ return ret;
+ len += ret; /* _TSINFO_FLAG */
+ }
if (ts_info->tx_types) {
ret = ethnl_bitset32_size(&ts_info->tx_types, NULL,
__HWTSTAMP_TX_CNT,
@@ -100,6 +109,14 @@ static int tsinfo_fill_reply(struct sk_buff *skb,
if (ret < 0)
return ret;
}
+ if (ts_info->flag) {
+ ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_FLAG,
+ &ts_info->flag, NULL,
+ __HWTSTAMP_FLAG_CNT,
+ ts_flag_names, compact);
+ if (ret < 0)
+ return ret;
+ }
if (ts_info->tx_types) {
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TX_TYPES,
&ts_info->tx_types, NULL,
--
2.17.1
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