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Commit f34fa14c authored by Rajesh Borundia's avatar Rajesh Borundia Committed by David S. Miller
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bnx2x: Add vxlan RSS support 



Latest FW submission added some vxlan offload capabilities to our device.
This patch adds the ability to connect to the vxlan NDOs and configure
the UDP port associated with it in the HW.

The device would now be capable of performing RSS according to the
inner headers of the vxlan packets.

Signed-off-by: default avatarRajesh Borundia <Rajesh.Borundia@qlogic.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3f0bf60f

drivers/net/ethernet/broadcom/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -139,6 +139,16 @@ config BNX2X_SRIOV 
	  Virtualization support in the 578xx and 57712 products. This

	  allows for virtual function acceleration in virtual environments.



config BNX2X_VXLAN

	bool "Virtual eXtensible Local Area Network support"

	default n

	depends on BNX2X && VXLAN && !(BNX2X=y && VXLAN=m)

	---help---

	  This enables hardward offload support for VXLAN protocol over the

	  NetXtremeII series adapters.

	  Say Y here if you want to enable hardware offload support for

	  Virtual eXtensible Local Area Network (VXLAN) in the driver.



config BGMAC

	tristate "BCMA bus GBit core support"

	depends on BCMA_HOST_SOC && HAS_DMA && (BCM47XX || ARCH_BCM_5301X)

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

+2 −0
Original line number Diff line number Diff line
@@ -1392,6 +1392,8 @@ enum sp_rtnl_flag { 
	BNX2X_SP_RTNL_HYPERVISOR_VLAN,

	BNX2X_SP_RTNL_TX_STOP,

	BNX2X_SP_RTNL_GET_DRV_VERSION,

	BNX2X_SP_RTNL_ADD_VXLAN_PORT,

	BNX2X_SP_RTNL_DEL_VXLAN_PORT,

};



enum bnx2x_iov_flag {

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h

+2 −0
Original line number Diff line number Diff line
@@ -967,6 +967,8 @@ static inline int bnx2x_func_start(struct bnx2x *bp) 
	else /* CHIP_IS_E1X */

		start_params->network_cos_mode = FW_WRR;



	start_params->vxlan_dst_port = cpu_to_le16(bp->vxlan_dst_port);



	start_params->inner_rss = 1;



	if (IS_MF_UFP(bp) && BNX2X_IS_MF_SD_PROTOCOL_FCOE(bp)) {

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

+109 −0
Original line number Diff line number Diff line
@@ -10075,6 +10075,81 @@ static void bnx2x_parity_recover(struct bnx2x *bp) 
	}

}



#ifdef CONFIG_BNX2X_VXLAN

static int bnx2x_vxlan_port_update(struct bnx2x *bp, u16 port)

{

	struct bnx2x_func_switch_update_params *switch_update_params;

	struct bnx2x_func_state_params func_params = {NULL};

	int rc;



	switch_update_params = &func_params.params.switch_update;



	/* Prepare parameters for function state transitions */

	__set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);

	__set_bit(RAMROD_RETRY, &func_params.ramrod_flags);



	func_params.f_obj = &bp->func_obj;

	func_params.cmd = BNX2X_F_CMD_SWITCH_UPDATE;



	/* Function parameters */

	__set_bit(BNX2X_F_UPDATE_TUNNEL_CFG_CHNG,

		  &switch_update_params->changes);

	switch_update_params->vxlan_dst_port = port;

	rc = bnx2x_func_state_change(bp, &func_params);

	if (rc)

		BNX2X_ERR("failed to change vxlan dst port to %d (rc = 0x%x)\n",

			  port, rc);

	return rc;

}



static void __bnx2x_add_vxlan_port(struct bnx2x *bp, u16 port)

{

	if (!netif_running(bp->dev))

		return;



	if (bp->vxlan_dst_port || !IS_PF(bp)) {

		DP(BNX2X_MSG_SP, "Vxlan destination port limit reached\n");

		return;

	}



	bp->vxlan_dst_port = port;

	bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_ADD_VXLAN_PORT, 0);

}



static void bnx2x_add_vxlan_port(struct net_device *netdev,

				 sa_family_t sa_family, __be16 port)

{

	struct bnx2x *bp = netdev_priv(netdev);

	u16 t_port = ntohs(port);



	__bnx2x_add_vxlan_port(bp, t_port);

}



static void __bnx2x_del_vxlan_port(struct bnx2x *bp, u16 port)

{

	if (!bp->vxlan_dst_port || bp->vxlan_dst_port != port || !IS_PF(bp)) {

		DP(BNX2X_MSG_SP, "Invalid vxlan port\n");

		return;

	}



	if (netif_running(bp->dev)) {

		bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_DEL_VXLAN_PORT, 0);

	} else {

		bp->vxlan_dst_port = 0;

		netdev_info(bp->dev, "Deleted vxlan dest port %d", port);

	}

}



static void bnx2x_del_vxlan_port(struct net_device *netdev,

				 sa_family_t sa_family, __be16 port)

{

	struct bnx2x *bp = netdev_priv(netdev);

	u16 t_port = ntohs(port);



	__bnx2x_del_vxlan_port(bp, t_port);

}

#endif



static int bnx2x_close(struct net_device *dev);



/* bnx2x_nic_unload() flushes the bnx2x_wq, thus reset task is
@@ -10083,6 +10158,9 @@ static int bnx2x_close(struct net_device *dev); 
static void bnx2x_sp_rtnl_task(struct work_struct *work)

{

	struct bnx2x *bp = container_of(work, struct bnx2x, sp_rtnl_task.work);

#ifdef CONFIG_BNX2X_VXLAN

	u16 port;

#endif



	rtnl_lock();
@@ -10181,6 +10259,27 @@ static void bnx2x_sp_rtnl_task(struct work_struct *work) 
			       &bp->sp_rtnl_state))

		bnx2x_update_mng_version(bp);



#ifdef CONFIG_BNX2X_VXLAN

	port = bp->vxlan_dst_port;

	if (test_and_clear_bit(BNX2X_SP_RTNL_ADD_VXLAN_PORT,

			       &bp->sp_rtnl_state)) {

		if (!bnx2x_vxlan_port_update(bp, port))

			netdev_info(bp->dev, "Added vxlan dest port %d", port);

		else

			bp->vxlan_dst_port = 0;

	}



	if (test_and_clear_bit(BNX2X_SP_RTNL_DEL_VXLAN_PORT,

			       &bp->sp_rtnl_state)) {

		if (!bnx2x_vxlan_port_update(bp, 0)) {

			netdev_info(bp->dev,

				    "Deleted vxlan dest port %d", port);

			bp->vxlan_dst_port = 0;

			vxlan_get_rx_port(bp->dev);

		}

	}

#endif



	/* work which needs rtnl lock not-taken (as it takes the lock itself and

	 * can be called from other contexts as well)

	 */
@@ -12379,6 +12478,12 @@ static int bnx2x_open(struct net_device *dev) 
	rc = bnx2x_nic_load(bp, LOAD_OPEN);

	if (rc)

		return rc;



#ifdef CONFIG_BNX2X_VXLAN

	if (IS_PF(bp))

		vxlan_get_rx_port(dev);

#endif



	return 0;

}
@@ -12894,6 +12999,10 @@ static const struct net_device_ops bnx2x_netdev_ops = { 
	.ndo_get_phys_port_id	= bnx2x_get_phys_port_id,

	.ndo_set_vf_link_state	= bnx2x_set_vf_link_state,

	.ndo_features_check	= bnx2x_features_check,

#ifdef CONFIG_BNX2X_VXLAN

	.ndo_add_vxlan_port	= bnx2x_add_vxlan_port,

	.ndo_del_vxlan_port	= bnx2x_del_vxlan_port,

#endif

};



static int bnx2x_set_coherency_mask(struct bnx2x *bp)