Eli Cohen 57ce41d1d1 IB/ipoib: Fix transmit queue stalling forever ... Commit f56bcd80 ("IPoIB: Use separate CQ for UD send completions") introduced a bug where the transmit queue could get stopped and never woken up. The problem is that send completions are only polled at the end of the xmit function, so if the send queue fills up and the xmit path stops the queue, then there is no way for send completions to ever get polled, and so the transmit queue stays stopped forever. Fix this by arming the send CQ just before posting the last send request that fills the send queue. Then, when the completion event handler is called, drain the send CQ. Since it is possible that not enough send completions are in the CQ, verify that the the net queue has been woken up after draining the send CQ, and if not arm a timer and drain again at the timer function. Signed-off-by: Roland Dreier <rolandd@cisco.com>		2008-04-30 20:02:45 -07:00
..
ipoib_cm.c	IPoIB: Use separate CQ for UD send completions	2008-04-29 13:46:53 -07:00
ipoib_ethtool.c	IPoIB: Use separate CQ for UD send completions	2008-04-29 13:46:53 -07:00
ipoib_fs.c	IPoIB: Constify seq_operations function pointer tables	2008-01-25 14:17:46 -08:00
ipoib_ib.c	IB/ipoib: Fix transmit queue stalling forever	2008-04-30 20:02:45 -07:00
ipoib_main.c	IPoIB: Use separate CQ for UD send completions	2008-04-29 13:46:53 -07:00
ipoib_multicast.c	IPoIB: Handle 4K IB MTU for UD (datagram) mode	2008-04-23 11:55:45 -07:00
ipoib_verbs.c	IB/ipoib: Fix transmit queue stalling forever	2008-04-30 20:02:45 -07:00
ipoib_vlan.c	IPoIB: Copy child MTU from parent	2008-04-29 13:46:53 -07:00
ipoib.h	IB/ipoib: Fix transmit queue stalling forever	2008-04-30 20:02:45 -07:00
Kconfig
Makefile	IPoIB: Add basic ethtool support	2008-04-16 21:09:32 -07:00