linux-stable.git/net/core/netpoll.c, branch v3.18

net: Pass a "more" indication down into netdev_start_xmit() code paths.

2014-09-02T00:39:55+00:00

For now it will always be false.

Signed-off-by: David S. Miller

net: Do txq_trans_update() in netdev_start_xmit()

2014-09-02T00:39:55+00:00

That way we don't have to audit every call site to make sure it is
doing this properly.

Signed-off-by: David S. Miller

net: add skb_get_tx_queue() helper

2014-08-30T03:02:07+00:00

Replace occurences of skb_get_queue_mapping() and follow-up
netdev_get_tx_queue() with an actual helper function.

Signed-off-by: Daniel Borkmann 
Signed-off-by: David S. Miller

net: Add ops->ndo_xmit_flush()

2014-08-25T06:02:45+00:00

Signed-off-by: David S. Miller

netpoll: fix use after free

2014-07-09T03:50:53+00:00

After a bonding master reclaims the netpoll info struct, slaves could
still hold a pointer to the reclaimed data. This patch fixes it: as
soon as netpoll_async_cleanup is called for a slave (eg. when
un-enslaved), we make sure that this slave doesn't point to the data.

Signed-off-by: David Decotigny 
Signed-off-by: David S. Miller

netpoll: Use skb_irq_freeable to make zap_completion_queue safe.

2014-04-01T21:53:36+00:00

Replace the test in zap_completion_queue to test when it is safe to
free skbs in hard irq context with skb_irq_freeable ensuring we only
free skbs when it is safe, and removing the possibility of subtle
problems.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

netpoll: Respect NETIF_F_LLTX

2014-03-29T21:58:37+00:00

Stop taking the transmit lock when a network device has specified
NETIF_F_LLTX.

If no locks needed to trasnmit a packet this is the ideal scenario for
netpoll as all packets can be trasnmitted immediately.

Even if some locks are needed in ndo_start_xmit skipping any unnecessary
serialization is desirable for netpoll as it makes it more likely a
debugging packet may be trasnmitted immediately instead of being
deferred until later.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

netpoll: Remove strong unnecessary assumptions about skbs

2014-03-29T21:58:37+00:00

Remove the assumption that the skbs that make it to
netpoll_send_skb_on_dev are allocated with find_skb, such that
skb->users == 1 and nothing is attached that would prevent the skbs from
being freed from hard irq context.

Remove this assumption by replacing __kfree_skb on error paths with
dev_kfree_skb_irq (in hard irq context) and kfree_skb (in process
context).

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

netpoll: Rename netpoll_rx_enable/disable to netpoll_poll_disable/enable

2014-03-29T21:58:37+00:00

The netpoll_rx_enable and netpoll_rx_disable functions have always
controlled polling the network drivers transmit and receive queues.

Rename them to netpoll_poll_enable and netpoll_poll_disable to make
their functionality clear.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

netpoll: Only call ndo_start_xmit from a single place

2014-03-29T21:58:37+00:00

Factor out the code that needs to surround ndo_start_xmit
from netpoll_send_skb_on_dev into netpoll_start_xmit.

It is an unfortunate fact that as the netpoll code has been maintained
the primary call site ndo_start_xmit learned how to handle vlans
and timestamps but the second call of ndo_start_xmit in queue_process
did not.

With the introduction of netpoll_start_xmit this associated logic now
happens at both call sites of ndo_start_xmit and should make it easy
for that to continue into the future.

Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller