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authorKory Maincent <kory.maincent@bootlin.com>2025-03-07 12:12:55 +0300
committerJakub Kicinski <kuba@kernel.org>2025-03-10 23:14:25 +0300
commitd0a4a1b36d7a71b45972ef33762c3fc082bec1db (patch)
tree2e55a828cbb45c86735c6716b70058cd97348190
parenteab0396353be1c778eba1c0b5180176f04dd21ce (diff)
downloadlinux-d0a4a1b36d7a71b45972ef33762c3fc082bec1db.tar.xz
net: ethtool: tsinfo: Fix dump command
Fix missing initialization of ts_info->phc_index in the dump command, which could cause a netdev interface to incorrectly display a PTP provider at index 0 instead of "none". Fix it by initializing the phc_index to -1. In the same time, restore missing initialization of ts_info.cmd for the IOCTL case, as it was before the transition from ethnl_default_dumpit to custom ethnl_tsinfo_dumpit. Also, remove unnecessary zeroing of ts_info, as it is embedded within reply_data, which is fully zeroed two lines earlier. Fixes: b9e3f7dc9ed95 ("net: ethtool: tsinfo: Enhance tsinfo to support several hwtstamp by net topology") Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20250307091255.463559-1-kory.maincent@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--net/ethtool/tsinfo.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c
index 691be6c445b3..ad3866c5a902 100644
--- a/net/ethtool/tsinfo.c
+++ b/net/ethtool/tsinfo.c
@@ -290,7 +290,8 @@ static void *ethnl_tsinfo_prepare_dump(struct sk_buff *skb,
reply_data = ctx->reply_data;
memset(reply_data, 0, sizeof(*reply_data));
reply_data->base.dev = dev;
- memset(&reply_data->ts_info, 0, sizeof(reply_data->ts_info));
+ reply_data->ts_info.cmd = ETHTOOL_GET_TS_INFO;
+ reply_data->ts_info.phc_index = -1;
return ehdr;
}