diff mbox series

[net-next,v3,2/2] net: wangxun: restrict feature flags for tunnel packets

Message ID 20250417080328.426554-3-jiawenwu@trustnetic.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series Implement udp tunnel port for txgbe | 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; no diff in generated;
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 success Errors and warnings before: 1 this patch: 1
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 2 this patch: 2
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 success Errors and warnings before: 2 this patch: 2
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 56 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 28 this patch: 28
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2025-04-18--09-00 (tests: 916)

Commit Message

Jiawen Wu April 17, 2025, 8:03 a.m. UTC 
Implement ndo_features_check to restrict Tx checksum offload flags, since
there are some inner layer length and protocols unsupported.

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
---
 drivers/net/ethernet/wangxun/libwx/wx_lib.c   | 27 +++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_lib.h   |  3 +++
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c |  1 +
 .../net/ethernet/wangxun/txgbe/txgbe_main.c   |  1 +
 4 files changed, 32 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 18422b940dbe..2a808afeb414 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -3000,6 +3000,33 @@  netdev_features_t wx_fix_features(struct net_device *netdev,
 }
 EXPORT_SYMBOL(wx_fix_features);
 
+#define WX_MAX_TUNNEL_HDR_LEN	80
+netdev_features_t wx_features_check(struct sk_buff *skb,
+				    struct net_device *netdev,
+				    netdev_features_t features)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	if (!skb->encapsulation)
+		return features;
+
+	if (wx->mac.type == wx_mac_em)
+		return features & ~NETIF_F_CSUM_MASK;
+
+	if (unlikely(skb_inner_mac_header(skb) - skb_transport_header(skb) >
+		     WX_MAX_TUNNEL_HDR_LEN))
+		return features & ~NETIF_F_CSUM_MASK;
+
+	if (skb->inner_protocol_type == ENCAP_TYPE_ETHER &&
+	    skb->inner_protocol != htons(ETH_P_IP) &&
+	    skb->inner_protocol != htons(ETH_P_IPV6) &&
+	    skb->inner_protocol != htons(ETH_P_TEB))
+		return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
+
+	return features;
+}
+EXPORT_SYMBOL(wx_features_check);
+
 void wx_set_ring(struct wx *wx, u32 new_tx_count,
 		 u32 new_rx_count, struct wx_ring *temp_ring)
 {
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.h b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
index fdeb0c315b75..919f49999308 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
@@ -33,6 +33,9 @@  void wx_get_stats64(struct net_device *netdev,
 int wx_set_features(struct net_device *netdev, netdev_features_t features);
 netdev_features_t wx_fix_features(struct net_device *netdev,
 				  netdev_features_t features);
+netdev_features_t wx_features_check(struct sk_buff *skb,
+				    struct net_device *netdev,
+				    netdev_features_t features);
 void wx_set_ring(struct wx *wx, u32 new_tx_count,
 		 u32 new_rx_count, struct wx_ring *temp_ring);
 
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index fd102078f5c9..82e27b9cfc9c 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -587,6 +587,7 @@  static const struct net_device_ops ngbe_netdev_ops = {
 	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_set_features       = wx_set_features,
 	.ndo_fix_features       = wx_fix_features,
+	.ndo_features_check     = wx_features_check,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 95e5262a1e9c..80e6b01c799b 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -581,6 +581,7 @@  static const struct net_device_ops txgbe_netdev_ops = {
 	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_set_features       = wx_set_features,
 	.ndo_fix_features       = wx_fix_features,
+	.ndo_features_check     = wx_features_check,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,