Commit c1af5427 authored by Anton Mikaev's avatar Anton Mikaev Committed by David S. Miller
Browse files

net: aquantia: Ethtool based ring size configuration 



Implemented ring size setup, min/max validation and reconfiguration in
runtime.

Signed-off-by: default avatarAnton Mikaev <amikaev@aquantia.com>
Signed-off-by: default avatarIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c18a9c09

drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c

+61 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 


#include "aq_ethtool.h"

#include "aq_nic.h"

#include "aq_vec.h"



static void aq_ethtool_get_regs(struct net_device *ndev,

				struct ethtool_regs *regs, void *p)
@@ -284,6 +285,64 @@ static int aq_ethtool_set_coalesce(struct net_device *ndev, 
	return aq_nic_update_interrupt_moderation_settings(aq_nic);

}



static void aq_get_ringparam(struct net_device *ndev,

			     struct ethtool_ringparam *ring)

{

	struct aq_nic_s *aq_nic = netdev_priv(ndev);

	struct aq_nic_cfg_s *aq_nic_cfg = aq_nic_get_cfg(aq_nic);



	ring->rx_pending = aq_nic_cfg->rxds;

	ring->tx_pending = aq_nic_cfg->txds;



	ring->rx_max_pending = aq_nic_cfg->aq_hw_caps->rxds_max;

	ring->tx_max_pending = aq_nic_cfg->aq_hw_caps->txds_max;

}



static int aq_set_ringparam(struct net_device *ndev,

			    struct ethtool_ringparam *ring)

{

	int err = 0;

	bool ndev_running = false;

	struct aq_nic_s *aq_nic = netdev_priv(ndev);

	struct aq_nic_cfg_s *aq_nic_cfg = aq_nic_get_cfg(aq_nic);

	const struct aq_hw_caps_s *hw_caps = aq_nic_cfg->aq_hw_caps;



	if (ring->rx_mini_pending || ring->rx_jumbo_pending) {

		err = -EOPNOTSUPP;

		goto err_exit;

	}



	if (netif_running(ndev)) {

		ndev_running = true;

		dev_close(ndev);

	}



	aq_nic_free_vectors(aq_nic);



	aq_nic_cfg->rxds = max(ring->rx_pending, hw_caps->rxds_min);

	aq_nic_cfg->rxds = min(aq_nic_cfg->rxds, hw_caps->rxds_max);

	aq_nic_cfg->rxds = ALIGN(aq_nic_cfg->rxds, AQ_HW_RXD_MULTIPLE);



	aq_nic_cfg->txds = max(ring->tx_pending, hw_caps->txds_min);

	aq_nic_cfg->txds = min(aq_nic_cfg->txds, hw_caps->txds_max);

	aq_nic_cfg->txds = ALIGN(aq_nic_cfg->txds, AQ_HW_TXD_MULTIPLE);



	for (aq_nic->aq_vecs = 0; aq_nic->aq_vecs < aq_nic_cfg->vecs;

	     aq_nic->aq_vecs++) {

		aq_nic->aq_vec[aq_nic->aq_vecs] =

		    aq_vec_alloc(aq_nic, aq_nic->aq_vecs, aq_nic_cfg);

		if (unlikely(!aq_nic->aq_vec[aq_nic->aq_vecs])) {

			err = -ENOMEM;

			goto err_exit;

		}

	}

	if (ndev_running)

		err = dev_open(ndev);



err_exit:

	return err;

}



const struct ethtool_ops aq_ethtool_ops = {

	.get_link            = aq_ethtool_get_link,

	.get_regs_len        = aq_ethtool_get_regs_len,
@@ -291,6 +350,8 @@ const struct ethtool_ops aq_ethtool_ops = { 
	.get_drvinfo         = aq_ethtool_get_drvinfo,

	.get_strings         = aq_ethtool_get_strings,

	.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,

	.get_ringparam       = aq_get_ringparam,

	.set_ringparam       = aq_set_ringparam,

	.get_rxfh_key_size   = aq_ethtool_get_rss_key_size,

	.get_rxfh            = aq_ethtool_get_rss,

	.get_rxnfc           = aq_ethtool_get_rxnfc,

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

+7 −2
Original line number Diff line number Diff line
@@ -24,8 +24,10 @@ struct aq_hw_caps_s { 
	u64 link_speed_msk;

	unsigned int hw_priv_flags;

	u32 media_type;

	u32 rxds;

	u32 txds;

	u32 rxds_max;

	u32 txds_max;

	u32 rxds_min;

	u32 txds_min;

	u32 txhwb_alignment;

	u32 irq_mask;

	u32 vecs;
@@ -98,6 +100,9 @@ struct aq_stats_s { 
#define AQ_HW_MEDIA_TYPE_TP    1U

#define AQ_HW_MEDIA_TYPE_FIBRE 2U



#define AQ_HW_TXD_MULTIPLE 8U

#define AQ_HW_RXD_MULTIPLE 8U



struct aq_hw_s {

	atomic_t flags;

	u8 rbl_enabled:1;

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

+2 −2
Original line number Diff line number Diff line
@@ -89,8 +89,8 @@ void aq_nic_cfg_start(struct aq_nic_s *self) 
	aq_nic_rss_init(self, cfg->num_rss_queues);



	/*descriptors */

	cfg->rxds = min(cfg->aq_hw_caps->rxds, AQ_CFG_RXDS_DEF);

	cfg->txds = min(cfg->aq_hw_caps->txds, AQ_CFG_TXDS_DEF);

	cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);

	cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);



	/*rss rings */

	cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c

+24 −22
Original line number Diff line number Diff line
@@ -26,10 +26,12 @@ 
	.tcs = HW_ATL_A0_TC_MAX,	  \

	.rxd_alignment = 1U,		  \

	.rxd_size = HW_ATL_A0_RXD_SIZE,   \

	.rxds = 248U, \

	.rxds_max = HW_ATL_A0_MAX_RXD,    \

	.rxds_min = HW_ATL_A0_MIN_RXD,    \

	.txd_alignment = 1U,		  \

	.txd_size = HW_ATL_A0_TXD_SIZE,   \

	.txds = 8U * 1024U, \

	.txds_max = HW_ATL_A0_MAX_TXD,    \

	.txds_min = HW_ATL_A0_MIN_RXD,    \

	.txhwb_alignment = 4096U,	  \

	.tx_rings = HW_ATL_A0_TX_RINGS,   \

	.rx_rings = HW_ATL_A0_RX_RINGS,   \

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0_internal.h

+8 −0
Original line number Diff line number Diff line
@@ -88,4 +88,12 @@ 


#define HW_ATL_A0_FW_VER_EXPECTED 0x01050006U



#define HW_ATL_A0_MIN_RXD \

	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_RXD_MULTIPLE))

#define HW_ATL_A0_MIN_TXD \

	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_TXD_MULTIPLE))



#define HW_ATL_A0_MAX_RXD 8184U

#define HW_ATL_A0_MAX_TXD 8184U



#endif /* HW_ATL_A0_INTERNAL_H */

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