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sfc: hook up ef100 representor TX

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Implement .ndo_start_xmit() by calling into the parent PF's TX path.

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree 2022-07-20 19:33:48 +01:00 committed by David S. Miller
parent 02443ab8c9
commit f72c38fad2
3 changed files with 38 additions and 1 deletions
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11
drivers/net/ethernet/sfc/ef100_netdev.c
View file

@ -195,6 +195,15 @@ static netdev_tx_t ef100_hard_start_xmit(struct sk_buff *skb,
struct net_device *net_dev)
{
struct efx_nic *efx = efx_netdev_priv(net_dev);
return __ef100_hard_start_xmit(skb, efx, net_dev, NULL);
}
netdev_tx_t __ef100_hard_start_xmit(struct sk_buff *skb,
struct efx_nic *efx,
struct net_device *net_dev,
struct efx_rep *efv)
{
struct efx_tx_queue *tx_queue;
struct efx_channel *channel;
int rc;
@ -209,7 +218,7 @@ static netdev_tx_t ef100_hard_start_xmit(struct sk_buff *skb,
}
tx_queue = &channel->tx_queue[0];
rc = ef100_enqueue_skb(tx_queue, skb);
rc = __ef100_enqueue_skb(tx_queue, skb, efv);
if (rc == 0)
return NETDEV_TX_OK;

5
drivers/net/ethernet/sfc/ef100_netdev.h
View file

@ -10,7 +10,12 @@
*/
#include <linux/netdevice.h>
#include "ef100_rep.h"
netdev_tx_t __ef100_hard_start_xmit(struct sk_buff *skb,
struct efx_nic *efx,
struct net_device *net_dev,
struct efx_rep *efv);
int ef100_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr);
int ef100_probe_netdev(struct efx_probe_data *probe_data);

23
drivers/net/ethernet/sfc/ef100_rep.c
View file

@ -10,6 +10,7 @@
*/
#include "ef100_rep.h"
#include "ef100_netdev.h"
#include "ef100_nic.h"
#include "mae.h"
@ -28,6 +29,25 @@ static int efx_ef100_rep_init_struct(struct efx_nic *efx, struct efx_rep *efv,
return 0;
}
static netdev_tx_t efx_ef100_rep_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct efx_rep *efv = netdev_priv(dev);
struct efx_nic *efx = efv->parent;
netdev_tx_t rc;
/* __ef100_hard_start_xmit() will always return success even in the
* case of TX drops, where it will increment efx's tx_dropped. The
* efv stats really only count attempted TX, not success/failure.
*/
atomic64_inc(&efv->stats.tx_packets);
atomic64_add(skb->len, &efv->stats.tx_bytes);
netif_tx_lock(efx->net_dev);
rc = __ef100_hard_start_xmit(skb, efx, dev, efv);
netif_tx_unlock(efx->net_dev);
return rc;
}
static int efx_ef100_rep_get_port_parent_id(struct net_device *dev,
struct netdev_phys_item_id *ppid)
{
@ -60,6 +80,7 @@ static int efx_ef100_rep_get_phys_port_name(struct net_device *dev,
}
static const struct net_device_ops efx_ef100_rep_netdev_ops = {
.ndo_start_xmit = efx_ef100_rep_xmit,
.ndo_get_port_parent_id = efx_ef100_rep_get_port_parent_id,
.ndo_get_phys_port_name = efx_ef100_rep_get_phys_port_name,
};
@ -119,6 +140,8 @@ static struct efx_rep *efx_ef100_rep_create_netdev(struct efx_nic *efx,
net_dev->ethtool_ops = &efx_ef100_rep_ethtool_ops;
net_dev->min_mtu = EFX_MIN_MTU;
net_dev->max_mtu = EFX_MAX_MTU;
net_dev->features |= NETIF_F_LLTX;
net_dev->hw_features |= NETIF_F_LLTX;
return efv;
fail1:
free_netdev(net_dev);