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Commit a5560a6c authored by Wei Liu's avatar Wei Liu Committed by David S. Miller
Browse files

xen: netif.h: document feature-split-event-channels 



This patch synchronises documentation for feature-split-event-channels from
Xen canonical header file.

Signed-off-by: default avatarWei Liu <wei.liu2@citrix.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d634bf2c

include/xen/interface/io/netif.h

+12 −0
Original line number Original line Diff line number Diff line
@@ -38,6 +38,18 @@ 
 * that it cannot safely queue packets (as it may not be kicked to send them).

 * that it cannot safely queue packets (as it may not be kicked to send them).

 */

 */





 /*

 * "feature-split-event-channels" is introduced to separate guest TX

 * and RX notificaion. Backend either doesn't support this feature or

 * advertise it via xenstore as 0 (disabled) or 1 (enabled).

 *

 * To make use of this feature, frontend should allocate two event

 * channels for TX and RX, advertise them to backend as

 * "event-channel-tx" and "event-channel-rx" respectively. If frontend

 * doesn't want to use this feature, it just writes "event-channel"

 * node as before.

 */



/*

/*

 * This is the 'wire' format for packets:

 * This is the 'wire' format for packets:

 *  Request 1: xen_netif_tx_request  -- XEN_NETTXF_* (any flags)

 *  Request 1: xen_netif_tx_request  -- XEN_NETTXF_* (any flags)