diff mbox series

[net,v3,2/3] net: wangxun: match VLAN CTAG and STAG features

Message ID 20240510061751.2240-3-jiawenwu@trustnetic.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Wangxun fixes | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 925 this patch: 925
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: duanqiangwen@net-swift.com
netdev/build_clang success Errors and warnings before: 936 this patch: 936
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 Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 936 this patch: 936
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 74 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-2024-05-13--18-00 (tests: 1019)

Commit Message

Jiawen Wu May 10, 2024, 6:17 a.m. UTC 
Hardware requires VLAN CTAG and STAG configuration always matches. And
whether VLAN CTAG or STAG changes, the configuration needs to be changed
as well.

Fixes: 6670f1ece2c8 ("net: txgbe: Add netdev features support")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Sai Krishna <saikrishnag@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
---
 drivers/net/ethernet/wangxun/libwx/wx_lib.c   | 46 +++++++++++++++++++
 drivers/net/ethernet/wangxun/libwx/wx_lib.h   |  2 +
 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c |  1 +
 .../net/ethernet/wangxun/txgbe/txgbe_main.c   |  1 +
 4 files changed, 50 insertions(+)

Comments

Jakub Kicinski May 13, 2024, 11 p.m. UTC | #1 
On Fri, 10 May 2024 14:17:50 +0800 Jiawen Wu wrote:
> Hardware requires VLAN CTAG and STAG configuration always matches. And
> whether VLAN CTAG or STAG changes, the configuration needs to be changed
> as well.

With this patch the resulting configuration will depend on the order of
actions. Basically the features will be disable if the last action is
either stag or ctag disable. This may cause to subtle bugs if some
refactoring changes the order of enable and disable.

It'd be better to turn both features on if _either_ feature was
requested. And require that _both_ are disabled before disabling.
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 667a5675998c..aefd78455468 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2701,6 +2701,52 @@  int wx_set_features(struct net_device *netdev, netdev_features_t features)
 }
 EXPORT_SYMBOL(wx_set_features);
 
+netdev_features_t wx_fix_features(struct net_device *netdev,
+				  netdev_features_t features)
+{
+	netdev_features_t changed = netdev->features ^ features;
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) {
+		if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
+			features |= NETIF_F_HW_VLAN_STAG_FILTER;
+		else
+			features &= ~NETIF_F_HW_VLAN_STAG_FILTER;
+	}
+	if (changed & NETIF_F_HW_VLAN_STAG_FILTER) {
+		if (features & NETIF_F_HW_VLAN_STAG_FILTER)
+			features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+		else
+			features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
+	}
+	if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
+		if (features & NETIF_F_HW_VLAN_CTAG_RX)
+			features |= NETIF_F_HW_VLAN_STAG_RX;
+		else
+			features &= ~NETIF_F_HW_VLAN_STAG_RX;
+	}
+	if (changed & NETIF_F_HW_VLAN_STAG_RX) {
+		if (features & NETIF_F_HW_VLAN_STAG_RX)
+			features |= NETIF_F_HW_VLAN_CTAG_RX;
+		else
+			features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+	}
+	if (changed & NETIF_F_HW_VLAN_CTAG_TX) {
+		if (features & NETIF_F_HW_VLAN_CTAG_TX)
+			features |= NETIF_F_HW_VLAN_STAG_TX;
+		else
+			features &= ~NETIF_F_HW_VLAN_STAG_TX;
+	}
+	if (changed & NETIF_F_HW_VLAN_STAG_TX) {
+		if (features & NETIF_F_HW_VLAN_STAG_TX)
+			features |= NETIF_F_HW_VLAN_CTAG_TX;
+		else
+			features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+	}
+
+	return features;
+}
+EXPORT_SYMBOL(wx_fix_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/libwx/wx_lib.h b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
index ec909e876720..c41b29ea812f 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
@@ -30,6 +30,8 @@  int wx_setup_resources(struct wx *wx);
 void wx_get_stats64(struct net_device *netdev,
 		    struct rtnl_link_stats64 *stats);
 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);
 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 fdd6b4f70b7a..e894e01d030d 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -499,6 +499,7 @@  static const struct net_device_ops ngbe_netdev_ops = {
 	.ndo_start_xmit         = wx_xmit_frame,
 	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_set_features       = wx_set_features,
+	.ndo_fix_features       = wx_fix_features,
 	.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 bd4624d14ca0..b3c0058b045d 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -428,6 +428,7 @@  static const struct net_device_ops txgbe_netdev_ops = {
 	.ndo_start_xmit         = wx_xmit_frame,
 	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_set_features       = wx_set_features,
+	.ndo_fix_features       = wx_fix_features,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
 	.ndo_get_stats64        = wx_get_stats64,