Commit 4f4040ea authored by Himanshu Mittal's avatar Himanshu Mittal Committed by Jakub Kicinski
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net: ti: icssg-prueth: Add prp offload support to ICSSG driver 



Add support for ICSSG PRP mode which supports offloading of:
 - Packet duplication and PRP trailer insertion
 - Packet duplicate discard and PRP trailer removal

Signed-off-by: default avatarHimanshu Mittal <h-mittal1@ti.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250618175536.430568-1-h-mittal1@ti.com


Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 77f08133

drivers/net/ethernet/ti/icssg/icssg_prueth.c

+11 −1
Original line number Diff line number Diff line
@@ -148,8 +148,10 @@ static int prueth_emac_start(struct prueth *prueth) 


	if (prueth->is_switch_mode)

		firmwares = prueth->icssg_switch_firmwares;

	else if (prueth->is_hsr_offload_mode)

	else if (prueth->is_hsr_offload_mode && HSR_V1 == prueth->hsr_prp_version)

		firmwares = prueth->icssg_hsr_firmwares;

	else if (prueth->is_hsr_offload_mode && PRP_V1 == prueth->hsr_prp_version)

		firmwares = prueth->icssg_prp_firmwares;

	else

		firmwares = prueth->icssg_emac_firmwares;
@@ -1527,6 +1529,7 @@ static int prueth_netdevice_event(struct notifier_block *unused, 
	struct netdev_notifier_changeupper_info *info;

	struct prueth_emac *emac = netdev_priv(ndev);

	struct prueth *prueth = emac->prueth;

	enum hsr_version hsr_ndev_version;

	int ret = NOTIFY_DONE;



	if (ndev->netdev_ops != &emac_netdev_ops)
@@ -1538,6 +1541,11 @@ static int prueth_netdevice_event(struct notifier_block *unused, 


		if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) &&

		    is_hsr_master(info->upper_dev)) {

			hsr_get_version(info->upper_dev, &hsr_ndev_version);

			if (hsr_ndev_version != HSR_V1 && hsr_ndev_version != PRP_V1)

				return -EOPNOTSUPP;

			prueth->hsr_prp_version = hsr_ndev_version;



			if (info->linking) {

				if (!prueth->hsr_dev) {

					prueth->hsr_dev = info->upper_dev;
@@ -1858,6 +1866,8 @@ static int prueth_probe(struct platform_device *pdev) 
				  prueth->icssg_switch_firmwares, "eth", "sw");

	icssg_mode_firmware_names(dev, prueth->icssg_emac_firmwares,

				  prueth->icssg_hsr_firmwares, "eth", "hsr");

	icssg_mode_firmware_names(dev, prueth->icssg_emac_firmwares,

				  prueth->icssg_prp_firmwares, "eth", "prp");



	spin_lock_init(&prueth->vtbl_lock);

	spin_lock_init(&prueth->stats_lock);

drivers/net/ethernet/ti/icssg/icssg_prueth.h

+5 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/etherdevice.h>

#include <linux/genalloc.h>

#include <linux/if_vlan.h>

#include <linux/if_hsr.h>

#include <linux/interrupt.h>

#include <linux/kernel.h>

#include <linux/mfd/syscon.h>
@@ -290,6 +291,7 @@ struct icssg_firmwares { 
 * @vlan_tbl: VLAN-FID table pointer

 * @hw_bridge_dev: pointer to HW bridge net device

 * @hsr_dev: pointer to the HSR net device

 * @hsr_prp_version: enum to store the protocol version of hsr master

 * @br_members: bitmask of bridge member ports

 * @hsr_members: bitmask of hsr member ports

 * @prueth_netdevice_nb: netdevice notifier block
@@ -303,6 +305,7 @@ struct icssg_firmwares { 
 * @icssg_emac_firmwares: Firmware names for EMAC mode, indexed per MAC

 * @icssg_switch_firmwares: Firmware names for SWITCH mode, indexed per MAC

 * @icssg_hsr_firmwares: Firmware names for HSR mode, indexed per MAC

 * @icssg_prp_firmwares: Firmware names for PRP mode, indexed per MAC

 */

struct prueth {

	struct device *dev;
@@ -332,6 +335,7 @@ struct prueth { 


	struct net_device *hw_bridge_dev;

	struct net_device *hsr_dev;

	enum hsr_version hsr_prp_version;

	u8 br_members;

	u8 hsr_members;

	struct notifier_block prueth_netdevice_nb;
@@ -349,6 +353,7 @@ struct prueth { 
	struct icssg_firmwares icssg_emac_firmwares[PRUETH_NUM_MACS];

	struct icssg_firmwares icssg_switch_firmwares[PRUETH_NUM_MACS];

	struct icssg_firmwares icssg_hsr_firmwares[PRUETH_NUM_MACS];

	struct icssg_firmwares icssg_prp_firmwares[PRUETH_NUM_MACS];

};



struct emac_tx_ts_response {