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| author | Wei Liu <wei.liu2@citrix.com> | 2013-05-22 08:34:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-24 03:40:37 +0200 |
| commit | a5560a6c17a4af4e8f45d5c1215ba7d5bb0ff109 (patch) | |
| tree | a39dca4181d43db663b5796335fecbed7b0ed34f /include/xen | |
| parent | xen-netfront: split event channels support for Xen frontend driver (diff) | |
| download | linux-a5560a6c17a4af4e8f45d5c1215ba7d5bb0ff109.tar.xz linux-a5560a6c17a4af4e8f45d5c1215ba7d5bb0ff109.zip | |
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: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/interface/io/netif.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/xen/interface/io/netif.h b/include/xen/interface/io/netif.h index 3ef3fe05ee99..eb262e3324d2 100644 --- a/include/xen/interface/io/netif.h +++ b/include/xen/interface/io/netif.h @@ -38,6 +38,18 @@ * 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: * Request 1: xen_netif_tx_request -- XEN_NETTXF_* (any flags) |