Merge branch 'sfc-E100-VF-respresenters'

Edward Cree says:

====================
sfc: VF representors for EF100

This series adds representor netdevices for EF100 VFs, as a step towards
 supporting TC offload and vDPA usecases in future patches.
In this first series is basic netdevice creation and packet TX; the
 following series will add the RX path.

v3: dropped massive mcdi_pcol.h patch which was applied separately.
v2: converted comments on struct efx_nic members added in patch #4 to
 kernel-doc (Jakub).  While at it, also gave struct efx_rep its own kdoc
 since several members had comments on them.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/efx_common.c b/drivers/net/ethernet/sfc/efx_common.c
index 56eb717bb07a..a929a1aaba92 100644
--- a/drivers/net/ethernet/sfc/efx_common.c
+++ b/drivers/net/ethernet/sfc/efx_common.c
@@ -24,6 +24,7 @@
 #include "mcdi_port_common.h"
 #include "io.h"
 #include "mcdi_pcol.h"
+#include "ef100_rep.h"
 
 static unsigned int debug = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
 			     NETIF_MSG_LINK | NETIF_MSG_IFDOWN |
@@ -1021,6 +1022,8 @@ int efx_init_struct(struct efx_nic *efx, struct pci_dev *pci_dev)
 	efx->rps_hash_table = kcalloc(EFX_ARFS_HASH_TABLE_SIZE,
 				      sizeof(*efx->rps_hash_table), GFP_KERNEL);
 #endif
+	spin_lock_init(&efx->vf_reps_lock);
+	INIT_LIST_HEAD(&efx->vf_reps);
 	INIT_WORK(&efx->mac_work, efx_mac_work);
 	init_waitqueue_head(&efx->flush_wq);
 
@@ -1389,3 +1392,38 @@ int efx_get_phys_port_name(struct net_device *net_dev, char *name, size_t len)
 		return -EINVAL;
 	return 0;
 }
+
+void efx_detach_reps(struct efx_nic *efx)
+{
+	struct net_device *rep_dev;
+	struct efx_rep *efv;
+
+	ASSERT_RTNL();
+	netif_dbg(efx, drv, efx->net_dev, "Detaching VF representors\n");
+	list_for_each_entry(efv, &efx->vf_reps, list) {
+		rep_dev = efv->net_dev;
+		if (!rep_dev)
+			continue;
+		netif_carrier_off(rep_dev);
+		/* See efx_device_detach_sync() */
+		netif_tx_lock_bh(rep_dev);
+		netif_tx_stop_all_queues(rep_dev);
+		netif_tx_unlock_bh(rep_dev);
+	}
+}
+
+void efx_attach_reps(struct efx_nic *efx)
+{
+	struct net_device *rep_dev;
+	struct efx_rep *efv;
+
+	ASSERT_RTNL();
+	netif_dbg(efx, drv, efx->net_dev, "Attaching VF representors\n");
+	list_for_each_entry(efv, &efx->vf_reps, list) {
+		rep_dev = efv->net_dev;
+		if (!rep_dev)
+			continue;
+		netif_tx_wake_all_queues(rep_dev);
+		netif_carrier_on(rep_dev);
+	}
+}