[PATCH net-next v4 0/5] Introduce HSR offload support for ICSSG

[PATCH net-next v4 0/5] Introduce HSR offload support for ICSSG

[MD Danish Anwar]

Hi All,
This series introduces HSR offload support for ICSSG driver. To support HSR
offload to hardware, ICSSG HSR firmware is used.

This series introduces,
1. HSR frame offload support for ICSSG driver.
2. HSR Tx Packet duplication offload
3. HSR Tx Tag and Rx Tag offload
4. Multicast filtering support in HSR offload mode.
5. Dependencies related to IEP.

HSR Test Setup:
--------------

     ___________           ___________           ___________
    |           | Link AB |           | Link BC |           |
  __|   AM64*   |_________|   AM64    |_________|   AM64*   |___
 |  | Station A |         | Station B |         | Station C |   |
 |  |___________|         |___________|         |___________|   |
 |                                                              |
 |______________________________________________________________|
                            Link CA
 *Could be any device that supports two ethernet interfaces.

Steps to switch to HSR frame forward offload mode:
-------------------------------------------------
Example assuming eth1, eth2 ports of ICSSG1 on AM64-EVM

  1) Enable HSR offload for both interfaces
      ethtool -K eth1 hsr-fwd-offload on
      ethtool -K eth1 hsr-dup-offload on
      ethtool -K eth1 hsr-tag-ins-offload on
      ethtool -K eth1 hsr-tag-rm-offload on

      ethtool -K eth2 hsr-fwd-offload on
      ethtool -K eth2 hsr-dup-offload on
      ethtool -K eth2 hsr-tag-ins-offload on
      ethtool -K eth2 hsr-tag-rm-offload on

  2) Create HSR interface and add slave interfaces to it
      ip link add name hsr0 type hsr slave1 eth1 slave2 eth2 \
    supervision 45 version 1

  3) Add IP address to the HSR interface
      ip addr add <IP_ADDR>/24 dev hsr0

  4) Bring up the HSR interface
      ip link set hsr0 up

Switching back to previous mode:
--------------------------------
  1) Delete HSR interface
      ip link delete hsr0

  2) Disable HSR port-to-port offloading mode, packet duplication
      ethtool -K eth1 hsr-fwd-offload off
      ethtool -K eth1 hsr-dup-offload off
      ethtool -K eth1 hsr-tag-ins-offload off
      ethtool -K eth1 hsr-tag-rm-offload off

      ethtool -K eth2 hsr-fwd-offload off
      ethtool -K eth2 hsr-dup-offload off
      ethtool -K eth2 hsr-tag-ins-offload off
      ethtool -K eth2 hsr-tag-rm-offload off

Testing the port-to-port frame forward offload feature:
-----------------------------------------------------
  1) Connect the LAN cables as shown in the test setup.
  2) Configure Station A and Station C in HSR non-offload mode.
  3) Configure Station B is HSR offload mode.
  4) Since HSR is a redundancy protocol, disconnect cable "Link CA",
     to ensure frames from Station A reach Station C only through
     Station B.
  5) Run iperf3 Server on Station C and client on station A.
  7) Check the CPU usage on Station B.

CPU usage report on Station B using mpstat when running UDP iperf3:
-------------------------------------------------------------------

  1) Non-Offload case
  -------------------
  CPU  %usr  %nice  %sys %iowait  %irq  %soft  %steal  %guest   %idle
  all  0.00   0.00  0.50    0.00  3.52  29.15    0.00    0.00   66.83
    0  0.00   0.00  0.00    0.00  7.00  58.00    0.00    0.00   35.00
    1  0.00   0.00  0.99    0.00  0.99   0.00    0.00    0.00   98.02

  2) Offload case
  ---------------
  CPU  %usr  %nice  %sys %iowait  %irq  %soft  %steal  %guest   %idle
  all  0.00   0.00  0.00    0.00  0.50   0.00    0.00    0.00   99.50
    0  0.00   0.00  0.99    0.00  0.00   0.00    0.00    0.00   99.01
    1  0.00   0.00  0.00    0.00  0.00   0.00    0.00    0.00  100.00

Note:
1) At the very least, hsr-fwd-offload must be enabled.
   Without offloading the port-to-port offload, other
   HSR offloads cannot be enabled.

2) Inorder to enable hsr-tag-ins-offload, hsr-dup-offload
   must also be enabled as these are tightly coupled in
   the firmware implementation.

Changes from v3 to v4:
*) Simplified ndo_set_features() implementation as suggested by Roger Quadros
<rogerq@kernel.org>
*) Maintained 80 character limit per line wherever possible.
*) Returning -EOPNOTSUPP whenever offloading is not possible.
*) Changed dev_dbg() prints to netdev_dbg() as suggested by Alexander
Lobakin <aleksander.lobakin@intel.com>
*) Squashed patch [1] and [2] together as hsr tag ins is dependent on hsr
tx duplication. Also didn't add Roger's RB tag from patch [2] as the patch
is now merged with [1] in patch 4/5.
*) Implemented emac_ndo_fix_features() to make sure NETIF_F_HW_HSR_DUP is
enabled / disabled with NETIF_F_HW_HSR_TAG_INS as suggested by Roger
Quadros <rogerq@kernel.org>
*) Added Roger's RB tag to patch 5/5.
*) Modified commit message of patch 3/5 to state that driver will be back
to previously used mode once HSR is disabled.

Changes from v2 to v3:
*) Renamed APIs common to switch and hsr modes with suffix _fw_offload.
*) Returning EOPNOTSUPP in prueth_hsr_port_link() as suggested by
   Andrew Lunn <andrew@lunn.ch>
*) Dropped unneccassary dev_err prints and changed dev_err to dev_dbg
   where applicable.
*) Renamed NETIF_PRUETH_HSR_OFFLOAD to NETIF_PRUETH_HSR_OFFLOAD_FEATURES
   to make it clear it is a collection of features, not an alias for one
   feature.
*) Added Kernel doc entries for @hsr_members and @is_hsr_offload_mode as
   suggested by Simon Horman <horms@kernel.org>
*) Dropped patch [3] as it is no longer needed in this series. It is
   already merged to net/main by commit [4].
*) Collected Reviewed-by tag from Roger Quadros <rogerq@kernel.org> for
   PATCH 1/6 and PATCH 2/6.
*) Added if check for current mode before calling __dev_mc_unsync as
   suggested by Roger Quadros <rogerq@kernel.org>
*) Updated commit message of PATCH 6/6 to describe handling of duplicate
   discard in the driver.

Changes from v1 to v2:
*) Modified patch 2/7 to only contain code movement as suggested by
   Dan Carpenter <dan.carpenter@linaro.org>
*) Added patch 3/7 by splitting it from 2/6 as the patch is not part of
   code movement done in patch 2/7.
*) Rebased on latest net-next/main.

v1: https://lore.kernel.org/all/20240808110800.1281716-1-danishanwar@ti.com/
v2: https://lore.kernel.org/all/20240813074233.2473876-1-danishanwar@ti.com
v3: https://lore.kernel.org/all/20240828091901.3120935-1-danishanwar@ti.com/

[1] https://lore.kernel.org/all/20240828091901.3120935-5-danishanwar@ti.com/
[2] https://lore.kernel.org/all/20240828091901.3120935-7-danishanwar@ti.com/
[3] https://lore.kernel.org/all/20240813074233.2473876-2-danishanwar@ti.com/
[4] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=e846be0fba85

MD Danish Anwar (4):
  net: ti: icss-iep: Move icss_iep structure
  net: ti: icssg-prueth: Stop hardcoding def_inc
  net: ti: icssg-prueth: Add support for HSR frame forward offload
  net: ti: icssg-prueth: Add multicast filtering support in HSR mode

Ravi Gunasekaran (1):
  net: ti: icssg-prueth: Enable HSR Tx duplication, Tx Tag and Rx Tag
    offload

 drivers/net/ethernet/ti/icssg/icss_iep.c      |  72 ------
 drivers/net/ethernet/ti/icssg/icss_iep.h      |  73 ++++++-
 .../net/ethernet/ti/icssg/icssg_classifier.c  |   1 +
 drivers/net/ethernet/ti/icssg/icssg_common.c  |  18 +-
 drivers/net/ethernet/ti/icssg/icssg_config.c  |  22 +-
 drivers/net/ethernet/ti/icssg/icssg_config.h  |   2 +
 drivers/net/ethernet/ti/icssg/icssg_prueth.c  | 206 +++++++++++++++++-
 drivers/net/ethernet/ti/icssg/icssg_prueth.h  |   9 +
 8 files changed, 311 insertions(+), 92 deletions(-)


base-commit: 075e3d30e4a3da8eadd12f2f063dc8e2ea9e1f08
-- 
2.34.1

[PATCH net-next v4 1/5] net: ti: icss-iep: Move icss_iep structure

[MD Danish Anwar]

Move icss_iep structure definition and to icss_iep.h file so that the
structure members can be used / accessed by all icssg driver files.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
---
 drivers/net/ethernet/ti/icssg/icss_iep.c | 72 -----------------------
 drivers/net/ethernet/ti/icssg/icss_iep.h | 73 +++++++++++++++++++++++-
 2 files changed, 72 insertions(+), 73 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.c b/drivers/net/ethernet/ti/icssg/icss_iep.c
index 75c294ce6fb6..5d6d1cf78e93 100644
--- a/drivers/net/ethernet/ti/icssg/icss_iep.c
+++ b/drivers/net/ethernet/ti/icssg/icss_iep.c
@@ -53,78 +53,6 @@
 #define IEP_CAP_CFG_CAPNR_1ST_EVENT_EN(n)	BIT(LATCH_INDEX(n))
 #define IEP_CAP_CFG_CAP_ASYNC_EN(n)		BIT(LATCH_INDEX(n) + 10)
 
-enum {
-	ICSS_IEP_GLOBAL_CFG_REG,
-	ICSS_IEP_GLOBAL_STATUS_REG,
-	ICSS_IEP_COMPEN_REG,
-	ICSS_IEP_SLOW_COMPEN_REG,
-	ICSS_IEP_COUNT_REG0,
-	ICSS_IEP_COUNT_REG1,
-	ICSS_IEP_CAPTURE_CFG_REG,
-	ICSS_IEP_CAPTURE_STAT_REG,
-
-	ICSS_IEP_CAP6_RISE_REG0,
-	ICSS_IEP_CAP6_RISE_REG1,
-
-	ICSS_IEP_CAP7_RISE_REG0,
-	ICSS_IEP_CAP7_RISE_REG1,
-
-	ICSS_IEP_CMP_CFG_REG,
-	ICSS_IEP_CMP_STAT_REG,
-	ICSS_IEP_CMP0_REG0,
-	ICSS_IEP_CMP0_REG1,
-	ICSS_IEP_CMP1_REG0,
-	ICSS_IEP_CMP1_REG1,
-
-	ICSS_IEP_CMP8_REG0,
-	ICSS_IEP_CMP8_REG1,
-	ICSS_IEP_SYNC_CTRL_REG,
-	ICSS_IEP_SYNC0_STAT_REG,
-	ICSS_IEP_SYNC1_STAT_REG,
-	ICSS_IEP_SYNC_PWIDTH_REG,
-	ICSS_IEP_SYNC0_PERIOD_REG,
-	ICSS_IEP_SYNC1_DELAY_REG,
-	ICSS_IEP_SYNC_START_REG,
-	ICSS_IEP_MAX_REGS,
-};
-
-/**
- * struct icss_iep_plat_data - Plat data to handle SoC variants
- * @config: Regmap configuration data
- * @reg_offs: register offsets to capture offset differences across SoCs
- * @flags: Flags to represent IEP properties
- */
-struct icss_iep_plat_data {
-	const struct regmap_config *config;
-	u32 reg_offs[ICSS_IEP_MAX_REGS];
-	u32 flags;
-};
-
-struct icss_iep {
-	struct device *dev;
-	void __iomem *base;
-	const struct icss_iep_plat_data *plat_data;
-	struct regmap *map;
-	struct device_node *client_np;
-	unsigned long refclk_freq;
-	int clk_tick_time;	/* one refclk tick time in ns */
-	struct ptp_clock_info ptp_info;
-	struct ptp_clock *ptp_clock;
-	struct mutex ptp_clk_mutex;	/* PHC access serializer */
-	u32 def_inc;
-	s16 slow_cmp_inc;
-	u32 slow_cmp_count;
-	const struct icss_iep_clockops *ops;
-	void *clockops_data;
-	u32 cycle_time_ns;
-	u32 perout_enabled;
-	bool pps_enabled;
-	int cap_cmp_irq;
-	u64 period;
-	u32 latch_enable;
-	struct work_struct work;
-};
-
 /**
  * icss_iep_get_count_hi() - Get the upper 32 bit IEP counter
  * @iep: Pointer to structure representing IEP.
diff --git a/drivers/net/ethernet/ti/icssg/icss_iep.h b/drivers/net/ethernet/ti/icssg/icss_iep.h
index 803a4b714893..0bdca0155abd 100644
--- a/drivers/net/ethernet/ti/icssg/icss_iep.h
+++ b/drivers/net/ethernet/ti/icssg/icss_iep.h
@@ -12,7 +12,78 @@
 #include <linux/ptp_clock_kernel.h>
 #include <linux/regmap.h>
 
-struct icss_iep;
+enum {
+	ICSS_IEP_GLOBAL_CFG_REG,
+	ICSS_IEP_GLOBAL_STATUS_REG,
+	ICSS_IEP_COMPEN_REG,
+	ICSS_IEP_SLOW_COMPEN_REG,
+	ICSS_IEP_COUNT_REG0,
+	ICSS_IEP_COUNT_REG1,
+	ICSS_IEP_CAPTURE_CFG_REG,
+	ICSS_IEP_CAPTURE_STAT_REG,
+
+	ICSS_IEP_CAP6_RISE_REG0,
+	ICSS_IEP_CAP6_RISE_REG1,
+
+	ICSS_IEP_CAP7_RISE_REG0,
+	ICSS_IEP_CAP7_RISE_REG1,
+
+	ICSS_IEP_CMP_CFG_REG,
+	ICSS_IEP_CMP_STAT_REG,
+	ICSS_IEP_CMP0_REG0,
+	ICSS_IEP_CMP0_REG1,
+	ICSS_IEP_CMP1_REG0,
+	ICSS_IEP_CMP1_REG1,
+
+	ICSS_IEP_CMP8_REG0,
+	ICSS_IEP_CMP8_REG1,
+	ICSS_IEP_SYNC_CTRL_REG,
+	ICSS_IEP_SYNC0_STAT_REG,
+	ICSS_IEP_SYNC1_STAT_REG,
+	ICSS_IEP_SYNC_PWIDTH_REG,
+	ICSS_IEP_SYNC0_PERIOD_REG,
+	ICSS_IEP_SYNC1_DELAY_REG,
+	ICSS_IEP_SYNC_START_REG,
+	ICSS_IEP_MAX_REGS,
+};
+
+/**
+ * struct icss_iep_plat_data - Plat data to handle SoC variants
+ * @config: Regmap configuration data
+ * @reg_offs: register offsets to capture offset differences across SoCs
+ * @flags: Flags to represent IEP properties
+ */
+struct icss_iep_plat_data {
+	const struct regmap_config *config;
+	u32 reg_offs[ICSS_IEP_MAX_REGS];
+	u32 flags;
+};
+
+struct icss_iep {
+	struct device *dev;
+	void __iomem *base;
+	const struct icss_iep_plat_data *plat_data;
+	struct regmap *map;
+	struct device_node *client_np;
+	unsigned long refclk_freq;
+	int clk_tick_time;	/* one refclk tick time in ns */
+	struct ptp_clock_info ptp_info;
+	struct ptp_clock *ptp_clock;
+	struct mutex ptp_clk_mutex;	/* PHC access serializer */
+	u32 def_inc;
+	s16 slow_cmp_inc;
+	u32 slow_cmp_count;
+	const struct icss_iep_clockops *ops;
+	void *clockops_data;
+	u32 cycle_time_ns;
+	u32 perout_enabled;
+	bool pps_enabled;
+	int cap_cmp_irq;
+	u64 period;
+	u32 latch_enable;
+	struct work_struct work;
+};
+
 extern const struct icss_iep_clockops prueth_iep_clockops;
 
 /* Firmware specific clock operations */
-- 
2.34.1

[PATCH net-next v4 2/5] net: ti: icssg-prueth: Stop hardcoding def_inc

[MD Danish Anwar]

The def_inc is stored in icss_iep structure. Currently default increment
(ns per clock tick) is hardcoded to 4 (Clock frequency being 250 MHz).
Change this to use the iep->def_inc variable as the iep structure is now
accessible to the driver files.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index becdda143c19..1dcd68eefdc3 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -365,7 +365,8 @@ static void prueth_iep_settime(void *clockops_data, u64 ns)
 	sc_desc.cyclecounter0_set = cyclecount & GENMASK(31, 0);
 	sc_desc.cyclecounter1_set = (cyclecount & GENMASK(63, 32)) >> 32;
 	sc_desc.iepcount_set = ns % cycletime;
-	sc_desc.CMP0_current = cycletime - 4; //Count from 0 to (cycle time)-4
+	/* Count from 0 to (cycle time) - emac->iep->def_inc */
+	sc_desc.CMP0_current = cycletime - emac->iep->def_inc;
 
 	memcpy_toio(sc_descp, &sc_desc, sizeof(sc_desc));
 
-- 
2.34.1

[PATCH net-next v4 3/5] net: ti: icssg-prueth: Add support for HSR frame forward offload

[MD Danish Anwar]

Add support for offloading HSR port-to-port frame forward to hardware.
When the slave interfaces are added to the HSR interface, the PRU cores
will be stopped and ICSSG HSR firmwares will be loaded to them.

Similarly, when HSR interface is deleted, the PRU cores will be
restarted and the last used firmwares will be reloaded. PRUeth
interfaces will be back to the last used mode.

This commit also renames some APIs that are common between switch and
hsr mode with '_fw_offload' suffix.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 .../net/ethernet/ti/icssg/icssg_classifier.c  |   1 +
 drivers/net/ethernet/ti/icssg/icssg_config.c  |  18 +--
 drivers/net/ethernet/ti/icssg/icssg_prueth.c  | 135 +++++++++++++++++-
 drivers/net/ethernet/ti/icssg/icssg_prueth.h  |   6 +
 4 files changed, 148 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c
index 9ec504d976d6..833ca86d0b71 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c
@@ -290,6 +290,7 @@ void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac)
 		     mac[2] << 16 | mac[3] << 24));
 	regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8));
 }
+EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr);
 
 void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac)
 {
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c
index dae52a83a378..7b2e6c192ff3 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.c
@@ -107,7 +107,7 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = {
 	},
 };
 
-static void icssg_config_mii_init_switch(struct prueth_emac *emac)
+static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac)
 {
 	struct prueth *prueth = emac->prueth;
 	int mii = prueth_emac_slice(emac);
@@ -278,7 +278,7 @@ static int emac_r30_is_done(struct prueth_emac *emac)
 	return 1;
 }
 
-static int prueth_switch_buffer_setup(struct prueth_emac *emac)
+static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac)
 {
 	struct icssg_buffer_pool_cfg __iomem *bpool_cfg;
 	struct icssg_rxq_ctx __iomem *rxq_ctx;
@@ -424,7 +424,7 @@ static void icssg_init_emac_mode(struct prueth *prueth)
 	icssg_class_set_host_mac_addr(prueth->miig_rt, mac);
 }
 
-static void icssg_init_switch_mode(struct prueth *prueth)
+static void icssg_init_fw_offload_mode(struct prueth *prueth)
 {
 	u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET;
 	int i;
@@ -455,8 +455,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice)
 	struct icssg_flow_cfg __iomem *flow_cfg;
 	int ret;
 
-	if (prueth->is_switch_mode)
-		icssg_init_switch_mode(prueth);
+	if (prueth->is_switch_mode || prueth->is_hsr_offload_mode)
+		icssg_init_fw_offload_mode(prueth);
 	else
 		icssg_init_emac_mode(prueth);
 
@@ -472,8 +472,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice)
 	regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET,
 			   ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT);
 	icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if);
-	if (prueth->is_switch_mode)
-		icssg_config_mii_init_switch(emac);
+	if (prueth->is_switch_mode || prueth->is_hsr_offload_mode)
+		icssg_config_mii_init_fw_offload(emac);
 	else
 		icssg_config_mii_init(emac);
 	icssg_config_ipg(emac);
@@ -498,8 +498,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice)
 	writeb(0, config + SPL_PKT_DEFAULT_PRIORITY);
 	writeb(0, config + QUEUE_NUM_UNTAGGED);
 
-	if (prueth->is_switch_mode)
-		ret = prueth_switch_buffer_setup(emac);
+	if (prueth->is_switch_mode || prueth->is_hsr_offload_mode)
+		ret = prueth_fw_offload_buffer_setup(emac);
 	else
 		ret = prueth_emac_buffer_setup(emac);
 	if (ret)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 1dcd68eefdc3..4e9a148352c7 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -13,6 +13,7 @@
 #include <linux/dma/ti-cppi5.h>
 #include <linux/etherdevice.h>
 #include <linux/genalloc.h>
+#include <linux/if_hsr.h>
 #include <linux/if_vlan.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -40,6 +41,8 @@
 #define DEFAULT_PORT_MASK	1
 #define DEFAULT_UNTAG_MASK	1
 
+#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES	NETIF_F_HW_HSR_FWD
+
 /* CTRLMMR_ICSSG_RGMII_CTRL register bits */
 #define ICSSG_CTRL_RGMII_ID_MODE                BIT(24)
 
@@ -118,6 +121,19 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+static struct icssg_firmwares icssg_hsr_firmwares[] = {
+	{
+		.pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf",
+		.rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf",
+		.txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf",
+	},
+	{
+		.pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf",
+		.rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf",
+		.txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf",
+	}
+};
+
 static struct icssg_firmwares icssg_switch_firmwares[] = {
 	{
 		.pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf",
@@ -152,6 +168,8 @@ static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac)
 
 	if (prueth->is_switch_mode)
 		firmwares = icssg_switch_firmwares;
+	else if (prueth->is_hsr_offload_mode)
+		firmwares = icssg_hsr_firmwares;
 	else
 		firmwares = icssg_emac_firmwares;
 
@@ -726,6 +744,34 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev)
 	queue_work(emac->cmd_wq, &emac->rx_mode_work);
 }
 
+static void emac_change_hsr_feature(struct net_device *ndev,
+				    netdev_features_t features,
+				    u64 hsr_feature)
+{
+	netdev_features_t changed = ndev->features ^ features;
+
+	if (changed & hsr_feature) {
+		if (features & hsr_feature)
+			ndev->features |= hsr_feature;
+		else
+			ndev->features &= ~hsr_feature;
+	}
+}
+
+static int emac_ndo_set_features(struct net_device *ndev,
+				 netdev_features_t features)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+
+	emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_FWD);
+	emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_DUP);
+	emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_TAG_INS);
+	emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_TAG_RM);
+
+	return 0;
+}
+
 static const struct net_device_ops emac_netdev_ops = {
 	.ndo_open = emac_ndo_open,
 	.ndo_stop = emac_ndo_stop,
@@ -737,6 +783,7 @@ static const struct net_device_ops emac_netdev_ops = {
 	.ndo_eth_ioctl = icssg_ndo_ioctl,
 	.ndo_get_stats64 = icssg_ndo_get_stats64,
 	.ndo_get_phys_port_name = icssg_ndo_get_phys_port_name,
+	.ndo_set_features = emac_ndo_set_features,
 };
 
 static int prueth_netdev_init(struct prueth *prueth,
@@ -865,6 +912,7 @@ static int prueth_netdev_init(struct prueth *prueth,
 	ndev->ethtool_ops = &icssg_ethtool_ops;
 	ndev->hw_features = NETIF_F_SG;
 	ndev->features = ndev->hw_features;
+	ndev->hw_features |= NETIF_PRUETH_HSR_OFFLOAD_FEATURES;
 
 	netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll);
 	hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC,
@@ -953,7 +1001,7 @@ static void prueth_emac_restart(struct prueth *prueth)
 	netif_device_attach(emac1->ndev);
 }
 
-static void icssg_enable_switch_mode(struct prueth *prueth)
+static void icssg_change_mode(struct prueth *prueth)
 {
 	struct prueth_emac *emac;
 	int mac;
@@ -973,8 +1021,13 @@ static void icssg_enable_switch_mode(struct prueth *prueth)
 					  BIT(emac->port_id) | DEFAULT_PORT_MASK,
 					  BIT(emac->port_id) | DEFAULT_UNTAG_MASK,
 					  true);
+			if (prueth->is_hsr_offload_mode)
+				icssg_vtbl_modify(emac, DEFAULT_VID,
+						  DEFAULT_PORT_MASK,
+						  DEFAULT_UNTAG_MASK, true);
 			icssg_set_pvid(prueth, emac->port_vlan, emac->port_id);
-			icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE);
+			if (prueth->is_switch_mode)
+				icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE);
 		}
 	}
 }
@@ -1012,7 +1065,7 @@ static int prueth_netdevice_port_link(struct net_device *ndev,
 			prueth->is_switch_mode = true;
 			prueth->default_vlan = 1;
 			emac->port_vlan = prueth->default_vlan;
-			icssg_enable_switch_mode(prueth);
+			icssg_change_mode(prueth);
 		}
 	}
 
@@ -1040,6 +1093,61 @@ static void prueth_netdevice_port_unlink(struct net_device *ndev)
 		prueth->hw_bridge_dev = NULL;
 }
 
+static int prueth_hsr_port_link(struct net_device *ndev)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	struct prueth_emac *emac0;
+	struct prueth_emac *emac1;
+
+	emac0 = prueth->emac[PRUETH_MAC0];
+	emac1 = prueth->emac[PRUETH_MAC1];
+
+	if (prueth->is_switch_mode)
+		return -EOPNOTSUPP;
+
+	prueth->hsr_members |= BIT(emac->port_id);
+	if (!prueth->is_hsr_offload_mode) {
+		if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) &&
+		    prueth->hsr_members & BIT(PRUETH_PORT_MII1)) {
+			if (!(emac0->ndev->features &
+			      NETIF_PRUETH_HSR_OFFLOAD_FEATURES) &&
+			    !(emac1->ndev->features &
+			      NETIF_PRUETH_HSR_OFFLOAD_FEATURES))
+				return -EOPNOTSUPP;
+			prueth->is_hsr_offload_mode = true;
+			prueth->default_vlan = 1;
+			emac0->port_vlan = prueth->default_vlan;
+			emac1->port_vlan = prueth->default_vlan;
+			icssg_change_mode(prueth);
+			netdev_dbg(ndev, "Enabling HSR offload mode\n");
+		}
+	}
+
+	return 0;
+}
+
+static void prueth_hsr_port_unlink(struct net_device *ndev)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	struct prueth_emac *emac0;
+	struct prueth_emac *emac1;
+
+	emac0 = prueth->emac[PRUETH_MAC0];
+	emac1 = prueth->emac[PRUETH_MAC1];
+
+	prueth->hsr_members &= ~BIT(emac->port_id);
+	if (prueth->is_hsr_offload_mode) {
+		prueth->is_hsr_offload_mode = false;
+		emac0->port_vlan = 0;
+		emac1->port_vlan = 0;
+		prueth->hsr_dev = NULL;
+		prueth_emac_restart(prueth);
+		netdev_dbg(ndev, "Disabling HSR Offload mode\n");
+	}
+}
+
 /* netdev notifier */
 static int prueth_netdevice_event(struct notifier_block *unused,
 				  unsigned long event, void *ptr)
@@ -1047,6 +1155,8 @@ static int prueth_netdevice_event(struct notifier_block *unused,
 	struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
 	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 	struct netdev_notifier_changeupper_info *info;
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
 	int ret = NOTIFY_DONE;
 
 	if (ndev->netdev_ops != &emac_netdev_ops)
@@ -1056,6 +1166,25 @@ static int prueth_netdevice_event(struct notifier_block *unused,
 	case NETDEV_CHANGEUPPER:
 		info = ptr;
 
+		if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) &&
+		    is_hsr_master(info->upper_dev)) {
+			if (info->linking) {
+				if (!prueth->hsr_dev) {
+					prueth->hsr_dev = info->upper_dev;
+					icssg_class_set_host_mac_addr(prueth->miig_rt,
+								      prueth->hsr_dev->dev_addr);
+				} else {
+					if (prueth->hsr_dev != info->upper_dev) {
+						netdev_dbg(ndev, "Both interfaces must be linked to same upper device\n");
+						return -EOPNOTSUPP;
+					}
+				}
+				prueth_hsr_port_link(ndev);
+			} else {
+				prueth_hsr_port_unlink(ndev);
+			}
+		}
+
 		if (netif_is_bridge_master(info->upper_dev)) {
 			if (info->linking)
 				ret = prueth_netdevice_port_link(ndev, info->upper_dev, extack);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index 786bd1ba34ab..a4b025fae797 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -243,11 +243,14 @@ struct icssg_firmwares {
  * @iep1: pointer to IEP1 device
  * @vlan_tbl: VLAN-FID table pointer
  * @hw_bridge_dev: pointer to HW bridge net device
+ * @hsr_dev: pointer to the HSR net device
  * @br_members: bitmask of bridge member ports
+ * @hsr_members: bitmask of hsr member ports
  * @prueth_netdevice_nb: netdevice notifier block
  * @prueth_switchdev_nb: switchdev notifier block
  * @prueth_switchdev_bl_nb: switchdev blocking notifier block
  * @is_switch_mode: flag to indicate if device is in Switch mode
+ * @is_hsr_offload_mode: flag to indicate if device is in hsr offload mode
  * @is_switchmode_supported: indicates platform support for switch mode
  * @switch_id: ID for mapping switch ports to bridge
  * @default_vlan: Default VLAN for host
@@ -279,11 +282,14 @@ struct prueth {
 	struct prueth_vlan_tbl *vlan_tbl;
 
 	struct net_device *hw_bridge_dev;
+	struct net_device *hsr_dev;
 	u8 br_members;
+	u8 hsr_members;
 	struct notifier_block prueth_netdevice_nb;
 	struct notifier_block prueth_switchdev_nb;
 	struct notifier_block prueth_switchdev_bl_nb;
 	bool is_switch_mode;
+	bool is_hsr_offload_mode;
 	bool is_switchmode_supported;
 	unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN];
 	int default_vlan;
-- 
2.34.1

[PATCH net-next v4 4/5] net: ti: icssg-prueth: Enable HSR Tx duplication, Tx Tag and Rx Tag offload

[MD Danish Anwar]

From: Ravi Gunasekaran <r-gunasekaran@ti.com>

The HSR stack allows to offload its Tx packet duplication functionality to
the hardware. Enable this offloading feature for ICSSG driver. Add support
to offload HSR Tx Tag Insertion and Rx Tag Removal and duplicate discard.

Inorder to enable hsr-tag-ins-offload, hsr-dup-offload must also be enabled
as these are tightly coupled in the firmware implementation.

Duplicate discard is done as part of RX tag removal and it is
done by the firmware. When driver sends the r30 command
ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE, firmware does RX tag removal as well as
duplicate discard.

Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 drivers/net/ethernet/ti/icssg/icssg_common.c | 18 ++++++++++---
 drivers/net/ethernet/ti/icssg/icssg_config.c |  4 ++-
 drivers/net/ethernet/ti/icssg/icssg_config.h |  2 ++
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 28 +++++++++++++++++++-
 drivers/net/ethernet/ti/icssg/icssg_prueth.h |  3 +++
 5 files changed, 50 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/ethernet/ti/icssg/icssg_common.c
index b9d8a93d1680..fdebeb2f84e0 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_common.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_common.c
@@ -660,14 +660,15 @@ enum netdev_tx icssg_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev
 {
 	struct cppi5_host_desc_t *first_desc, *next_desc, *cur_desc;
 	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
 	struct netdev_queue *netif_txq;
 	struct prueth_tx_chn *tx_chn;
 	dma_addr_t desc_dma, buf_dma;
+	u32 pkt_len, dst_tag_id;
 	int i, ret = 0, q_idx;
 	bool in_tx_ts = 0;
 	int tx_ts_cookie;
 	void **swdata;
-	u32 pkt_len;
 	u32 *epib;
 
 	pkt_len = skb_headlen(skb);
@@ -712,9 +713,20 @@ enum netdev_tx icssg_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev
 
 	/* set dst tag to indicate internal qid at the firmware which is at
 	 * bit8..bit15. bit0..bit7 indicates port num for directed
-	 * packets in case of switch mode operation
+	 * packets in case of switch mode operation and port num 0
+	 * for undirected packets in case of HSR offload mode
 	 */
-	cppi5_desc_set_tags_ids(&first_desc->hdr, 0, (emac->port_id | (q_idx << 8)));
+	dst_tag_id = emac->port_id | (q_idx << 8);
+
+	if (prueth->is_hsr_offload_mode &&
+	    (ndev->features & NETIF_F_HW_HSR_DUP))
+		dst_tag_id = PRUETH_UNDIRECTED_PKT_DST_TAG;
+
+	if (prueth->is_hsr_offload_mode &&
+	    (ndev->features & NETIF_F_HW_HSR_TAG_INS))
+		epib[1] |= PRUETH_UNDIRECTED_PKT_TAG_INS;
+
+	cppi5_desc_set_tags_ids(&first_desc->hdr, 0, dst_tag_id);
 	k3_udma_glue_tx_dma_to_cppi5_addr(tx_chn->tx_chn, &buf_dma);
 	cppi5_hdesc_attach_buf(first_desc, buf_dma, pkt_len, buf_dma, pkt_len);
 	swdata = cppi5_hdesc_get_swdata(first_desc);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c
index 7b2e6c192ff3..72ace151d8e9 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.c
@@ -531,7 +531,9 @@ static const struct icssg_r30_cmd emac_r32_bitmask[] = {
 	{{EMAC_NONE,  0xffff4000, EMAC_NONE, EMAC_NONE}},	/* Preemption on Tx ENABLE*/
 	{{EMAC_NONE,  0xbfff0000, EMAC_NONE, EMAC_NONE}},	/* Preemption on Tx DISABLE*/
 	{{0xffff0010,  EMAC_NONE, 0xffff0010, EMAC_NONE}},	/* VLAN AWARE*/
-	{{0xffef0000,  EMAC_NONE, 0xffef0000, EMAC_NONE}}	/* VLAN UNWARE*/
+	{{0xffef0000,  EMAC_NONE, 0xffef0000, EMAC_NONE}},	/* VLAN UNWARE*/
+	{{0xffff2000, EMAC_NONE, EMAC_NONE, EMAC_NONE}},	/* HSR_RX_OFFLOAD_ENABLE */
+	{{0xdfff0000, EMAC_NONE, EMAC_NONE, EMAC_NONE}}		/* HSR_RX_OFFLOAD_DISABLE */
 };
 
 int icssg_set_port_state(struct prueth_emac *emac,
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.h b/drivers/net/ethernet/ti/icssg/icssg_config.h
index 1ac60283923b..92c2deaa3068 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.h
@@ -80,6 +80,8 @@ enum icssg_port_state_cmd {
 	ICSSG_EMAC_PORT_PREMPT_TX_DISABLE,
 	ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE,
 	ICSSG_EMAC_PORT_VLAN_AWARE_DISABLE,
+	ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE,
+	ICSSG_EMAC_HSR_RX_OFFLOAD_DISABLE,
 	ICSSG_EMAC_PORT_MAX_COMMANDS
 };
 
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 4e9a148352c7..49b855ae62a4 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -41,7 +41,10 @@
 #define DEFAULT_PORT_MASK	1
 #define DEFAULT_UNTAG_MASK	1
 
-#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES	NETIF_F_HW_HSR_FWD
+#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES	(NETIF_F_HW_HSR_FWD | \
+						 NETIF_F_HW_HSR_DUP | \
+						 NETIF_F_HW_HSR_TAG_INS | \
+						 NETIF_F_HW_HSR_TAG_RM)
 
 /* CTRLMMR_ICSSG_RGMII_CTRL register bits */
 #define ICSSG_CTRL_RGMII_ID_MODE                BIT(24)
@@ -758,6 +761,21 @@ static void emac_change_hsr_feature(struct net_device *ndev,
 	}
 }
 
+static netdev_features_t emac_ndo_fix_features(struct net_device *ndev,
+					       netdev_features_t features)
+{
+	/* In order to enable hsr tag insertion offload, hsr dup offload must
+	 * also be enabled as these two are tightly coupled in firmware
+	 * implementation.
+	 */
+	if (features & NETIF_F_HW_HSR_TAG_INS)
+		features |= NETIF_F_HW_HSR_DUP;
+	else
+		features &= ~NETIF_F_HW_HSR_DUP;
+
+	return features;
+}
+
 static int emac_ndo_set_features(struct net_device *ndev,
 				 netdev_features_t features)
 {
@@ -783,6 +801,7 @@ static const struct net_device_ops emac_netdev_ops = {
 	.ndo_eth_ioctl = icssg_ndo_ioctl,
 	.ndo_get_stats64 = icssg_ndo_get_stats64,
 	.ndo_get_phys_port_name = icssg_ndo_get_phys_port_name,
+	.ndo_fix_features = emac_ndo_fix_features,
 	.ndo_set_features = emac_ndo_set_features,
 };
 
@@ -1010,6 +1029,13 @@ static void icssg_change_mode(struct prueth *prueth)
 
 	for (mac = PRUETH_MAC0; mac < PRUETH_NUM_MACS; mac++) {
 		emac = prueth->emac[mac];
+		if (prueth->is_hsr_offload_mode) {
+			if (emac->ndev->features & NETIF_F_HW_HSR_TAG_RM)
+				icssg_set_port_state(emac, ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE);
+			else
+				icssg_set_port_state(emac, ICSSG_EMAC_HSR_RX_OFFLOAD_DISABLE);
+		}
+
 		if (netif_running(emac->ndev)) {
 			icssg_fdb_add_del(emac, eth_stp_addr, prueth->default_vlan,
 					  ICSSG_FDB_ENTRY_P0_MEMBERSHIP |
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index a4b025fae797..bba6da2e6bd8 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -59,6 +59,9 @@
 
 #define IEP_DEFAULT_CYCLE_TIME_NS	1000000	/* 1 ms */
 
+#define PRUETH_UNDIRECTED_PKT_DST_TAG	0
+#define PRUETH_UNDIRECTED_PKT_TAG_INS	BIT(30)
+
 /* Firmware status codes */
 #define ICSS_HS_FW_READY 0x55555555
 #define ICSS_HS_FW_DEAD 0xDEAD0000	/* lower 16 bits contain error code */
-- 
2.34.1

[PATCH net-next v4 5/5] net: ti: icssg-prueth: Add multicast filtering support in HSR mode

[MD Danish Anwar]

Add support for multicast filtering in HSR mode

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
---
 drivers/net/ethernet/ti/icssg/icssg_prueth.c | 42 +++++++++++++++++++-
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 49b855ae62a4..76ccfd79f45f 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -492,6 +492,36 @@ static int icssg_prueth_del_mcast(struct net_device *ndev, const u8 *addr)
 	return 0;
 }
 
+static int icssg_prueth_hsr_add_mcast(struct net_device *ndev, const u8 *addr)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+
+	icssg_fdb_add_del(emac, addr, prueth->default_vlan,
+			  ICSSG_FDB_ENTRY_P0_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_P1_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_P2_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_BLOCK, true);
+
+	icssg_vtbl_modify(emac, emac->port_vlan, BIT(emac->port_id),
+			  BIT(emac->port_id), true);
+	return 0;
+}
+
+static int icssg_prueth_hsr_del_mcast(struct net_device *ndev, const u8 *addr)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+
+	icssg_fdb_add_del(emac, addr, prueth->default_vlan,
+			  ICSSG_FDB_ENTRY_P0_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_P1_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_P2_MEMBERSHIP |
+			  ICSSG_FDB_ENTRY_BLOCK, false);
+
+	return 0;
+}
+
 /**
  * emac_ndo_open - EMAC device open
  * @ndev: network adapter device
@@ -652,7 +682,10 @@ static int emac_ndo_stop(struct net_device *ndev)
 
 	icssg_class_disable(prueth->miig_rt, prueth_emac_slice(emac));
 
-	__dev_mc_unsync(ndev, icssg_prueth_del_mcast);
+	if (emac->prueth->is_hsr_offload_mode)
+		__dev_mc_unsync(ndev, icssg_prueth_hsr_del_mcast);
+	else
+		__dev_mc_unsync(ndev, icssg_prueth_del_mcast);
 
 	atomic_set(&emac->tdown_cnt, emac->tx_ch_num);
 	/* ensure new tdown_cnt value is visible */
@@ -730,7 +763,12 @@ static void emac_ndo_set_rx_mode_work(struct work_struct *work)
 		return;
 	}
 
-	__dev_mc_sync(ndev, icssg_prueth_add_mcast, icssg_prueth_del_mcast);
+	if (emac->prueth->is_hsr_offload_mode)
+		__dev_mc_sync(ndev, icssg_prueth_hsr_add_mcast,
+			      icssg_prueth_hsr_del_mcast);
+	else
+		__dev_mc_sync(ndev, icssg_prueth_add_mcast,
+			      icssg_prueth_del_mcast);
 }
 
 /**
-- 
2.34.1

Re: [PATCH net-next v4 3/5] net: ti: icssg-prueth: Add support for HSR frame forward offload

[kernel test robot]

Hi MD,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 075e3d30e4a3da8eadd12f2f063dc8e2ea9e1f08]

url:    https://github.com/intel-lab-lkp/linux/commits/MD-Danish-Anwar/net-ti-icss-iep-Move-icss_iep-structure/20240904-180917
base:   075e3d30e4a3da8eadd12f2f063dc8e2ea9e1f08
patch link:    https://lore.kernel.org/r/20240904100506.3665892-4-danishanwar%40ti.com
patch subject: [PATCH net-next v4 3/5] net: ti: icssg-prueth: Add support for HSR frame forward offload
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20240906/202409061658.vSwcFJiK-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240906/202409061658.vSwcFJiK-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409061658.vSwcFJiK-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/ti/icssg/icssg_prueth.c: In function 'emac_ndo_set_features':
>> drivers/net/ethernet/ti/icssg/icssg_prueth.c:765:24: warning: unused variable 'prueth' [-Wunused-variable]
     765 |         struct prueth *prueth = emac->prueth;
         |                        ^~~~~~


vim +/prueth +765 drivers/net/ethernet/ti/icssg/icssg_prueth.c

   760	
   761	static int emac_ndo_set_features(struct net_device *ndev,
   762					 netdev_features_t features)
   763	{
   764		struct prueth_emac *emac = netdev_priv(ndev);
 > 765		struct prueth *prueth = emac->prueth;
   766	
   767		emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_FWD);
   768		emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_DUP);
   769		emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_TAG_INS);
   770		emac_change_hsr_feature(ndev, features, NETIF_F_HW_HSR_TAG_RM);
   771	
   772		return 0;
   773	}
   774	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki