diff options
| author | Ming Lei <ming.lei@canonical.com> | 2013-07-25 09:47:53 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-28 07:10:57 +0400 |
| commit | a88c32ae15f25fcf0a3c9fadd92f840a1abf0e43 (patch) | |
| tree | af3102f094d7e5d842bf204f49bd0f8f99a54616 /drivers/net/usb/ax88179_178a.c | |
| parent | 6680ec68eff47d36f67b4351bc9836fd6cba9532 (diff) | |
| download | linux-a88c32ae15f25fcf0a3c9fadd92f840a1abf0e43.tar.xz | |
USBNET: centralize computing of max rx/tx qlen
This patch centralizes computing of max rx/tx qlen, because:
- RX_QLEN()/TX_QLEN() is called in hot path
- computing depends on device's usb speed, now we have ls/fs, hs, ss,
so more checks need to be involved
- in fact, max rx/tx qlen should not only depend on device USB
speed, but also depend on ethernet link speed, so we need to
consider that in future.
- if SG support is done, max tx qlen may need change too
Generally, hard_mtu and rx_urb_size are changed in bind(), reset()
and link_reset() callback, and change mtu network operation, this
patches introduces the API of usbnet_update_max_qlen(), and calls
it in above path.
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/ax88179_178a.c')
| -rw-r--r-- | drivers/net/usb/ax88179_178a.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c index 1e3c302d94fe..658540433faf 100644 --- a/drivers/net/usb/ax88179_178a.c +++ b/drivers/net/usb/ax88179_178a.c @@ -688,6 +688,9 @@ static int ax88179_change_mtu(struct net_device *net, int new_mtu) 2, 2, &tmp16); } + /* max qlen depend on hard_mtu and rx_urb_size */ + usbnet_update_max_qlen(dev); + return 0; } |