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Commit 04fd3d35 authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
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doc, net: Update documentation of synchronisation for TX multiqueue 



Commits e308a5d8 ('netdev: Add
netdev->addr_list_lock protection.') and
e8a0464c ('netdev: Allocate multiple
queues for TX.') introduced more fine-grained locks.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93b6a3ad

Documentation/networking/netdevices.txt

+3 −3
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ dev->get_stats: 
	Context: nominally process, but don't sleep inside an rwlock



dev->hard_start_xmit:

	Synchronization: netif_tx_lock spinlock.

	Synchronization: __netif_tx_lock spinlock.



	When the driver sets NETIF_F_LLTX in dev->features this will be

	called without holding netif_tx_lock. In this case the driver
@@ -87,12 +87,12 @@ dev->hard_start_xmit: 
	  Only valid when NETIF_F_LLTX is set.



dev->tx_timeout:

	Synchronization: netif_tx_lock spinlock.

	Synchronization: netif_tx_lock spinlock; all TX queues frozen.

	Context: BHs disabled

	Notes: netif_queue_stopped() is guaranteed true



dev->set_rx_mode:

	Synchronization: netif_tx_lock spinlock.

	Synchronization: netif_addr_lock spinlock.

	Context: BHs disabled



struct napi_struct synchronization rules