diff options
| author | Ming Lei <ming.lei@canonical.com> | 2013-07-25 13:47:53 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-27 20:10:57 -0700 |
| commit | a88c32ae15f25fcf0a3c9fadd92f840a1abf0e43 (patch) | |
| tree | af3102f094d7e5d842bf204f49bd0f8f99a54616 /include/linux/usb/usbnet.h | |
| parent | 6680ec68eff47d36f67b4351bc9836fd6cba9532 (diff) | |
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 'include/linux/usb/usbnet.h')
| -rw-r--r-- | include/linux/usb/usbnet.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index f18d64129f99..8fbc008e183e 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -34,6 +34,7 @@ struct usbnet { struct mutex phy_mutex; unsigned char suspend_count; unsigned char pkt_cnt, pkt_err; + unsigned short rx_qlen, tx_qlen; /* i/o info: pipes etc */ unsigned in, out; @@ -253,4 +254,6 @@ extern void usbnet_link_change(struct usbnet *, bool, bool); extern int usbnet_status_start(struct usbnet *dev, gfp_t mem_flags); extern void usbnet_status_stop(struct usbnet *dev); +extern void usbnet_update_max_qlen(struct usbnet *dev); + #endif /* __LINUX_USB_USBNET_H */ |