diff mbox series

[net-next,v4,08/12] ethtool: rss: report info about additional contexts from XArray

Message ID 20240809031827.2373341-9-kuba@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ethtool: rss: driver tweaks and netlink context dumps | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; GEN HAS DIFF 2 files changed, 119 insertions(+);
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit fail Errors and warnings before: 18 this patch: 18
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang fail Errors and warnings before: 18 this patch: 18
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn fail Errors and warnings before: 18 this patch: 18
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 55 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jakub Kicinski Aug. 9, 2024, 3:18 a.m. UTC 
IOCTL already uses the XArray when reporting info about additional
contexts. Do the same thing in netlink code.

Reviewed-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/ethtool/rss.c | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/ethtool/rss.c b/net/ethtool/rss.c
index 5c477cc36251..023782ca1230 100644
--- a/net/ethtool/rss.c
+++ b/net/ethtool/rss.c
@@ -82,7 +82,6 @@  rss_prepare_get(const struct rss_req_info *request, struct net_device *dev,
 	rxfh.indir = data->indir_table;
 	rxfh.key_size = data->hkey_size;
 	rxfh.key = data->hkey;
-	rxfh.rss_context = request->rss_context;
 
 	ret = ops->get_rxfh(dev, &rxfh);
 	if (ret)
@@ -95,6 +94,41 @@  rss_prepare_get(const struct rss_req_info *request, struct net_device *dev,
 	return ret;
 }
 
+static int
+rss_prepare_ctx(const struct rss_req_info *request, struct net_device *dev,
+		struct rss_reply_data *data, const struct genl_info *info)
+{
+	struct ethtool_rxfh_context *ctx;
+	u32 total_size, indir_bytes;
+	u8 *rss_config;
+
+	ctx = xa_load(&dev->ethtool->rss_ctx, request->rss_context);
+	if (!ctx)
+		return -ENOENT;
+
+	data->indir_size = ctx->indir_size;
+	data->hkey_size = ctx->key_size;
+	data->hfunc = ctx->hfunc;
+	data->input_xfrm = ctx->input_xfrm;
+
+	indir_bytes = data->indir_size * sizeof(u32);
+	total_size = indir_bytes + data->hkey_size;
+	rss_config = kzalloc(total_size, GFP_KERNEL);
+	if (!rss_config)
+		return -ENOMEM;
+
+	data->indir_table = (u32 *)rss_config;
+	memcpy(data->indir_table, ethtool_rxfh_context_indir(ctx), indir_bytes);
+
+	if (data->hkey_size) {
+		data->hkey = rss_config + indir_bytes;
+		memcpy(data->hkey, ethtool_rxfh_context_key(ctx),
+		       data->hkey_size);
+	}
+
+	return 0;
+}
+
 static int
 rss_prepare_data(const struct ethnl_req_info *req_base,
 		 struct ethnl_reply_data *reply_base,
@@ -115,6 +149,7 @@  rss_prepare_data(const struct ethnl_req_info *req_base,
 			return -EOPNOTSUPP;
 
 		data->no_key_fields = !ops->rxfh_per_ctx_key;
+		return rss_prepare_ctx(request, dev, data, info);
 	}
 
 	return rss_prepare_get(request, dev, data, info);