forked from luck/tmp_suning_uos_patched
f9184df3b9
When creating an fcoe interfce, we call fcoe_link_speed_update before we add the lports fcoe interface to the fc_hostlist. Since network device events like NETDEV_CHANGE are only processed if an fcoe interface is found with an underlying netdev that matches the netdev of the event. Since this processing in fcoe_device_notification is how link_speed changes get communicated to the libfc code (via fcoe_link_speed_update), we have a race condition - if a NETDEV_CHANGE event is sent after the call to fcoe_link_speed_update in fcoe_netdev_config, but before we add the interface to the fc_hostlist, we will loose the event and attributes like /sys/class/fc_host/hostX/speed will not get updated properly. Fix this by moving the add to the fc_hostlist above the serialized call to fcoe_netdev_config, ensuring that we catch netdev envents before we make a direct call to fcoe_link_speed_update. Also use this opportunity to clean up access to the fc_hostlist a bit by creating a fcoe_hostlist_del accessor and replacing the cleanup in fcoe_exit to use it properly. Tested by myself successfully [ Comment over 80 chars broken into multi-line by Robert Love to satisfy checkpatch.pl ] Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reviewed-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> |
||
|---|---|---|
| .. | ||
| fcoe_ctlr.c | ||
| fcoe_sysfs.c | ||
| fcoe_transport.c | ||
| fcoe.c | ||
| fcoe.h | ||
| libfcoe.h | ||
| Makefile | ||