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| author | Wei Liu <wei.liu2@citrix.com> | 2013-05-22 16:44:45 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-05-22 16:44:45 +0200 |
| commit | 9204bc654562976c7cdebf21c6b5013f6e3057b3 (patch) | |
| tree | 37255cbc33c29d28c1d6410ddc8444796c51687d /xen/include/public | |
| parent | 6d243308e1d75f866679db226159c797d6c83aad (diff) | |
| download | xen-9204bc654562976c7cdebf21c6b5013f6e3057b3.tar.gz xen-9204bc654562976c7cdebf21c6b5013f6e3057b3.tar.bz2 xen-9204bc654562976c7cdebf21c6b5013f6e3057b3.zip | |
netif: document feature-split-event-channel
This is a new feature to separate TX and RX notification. Document it in
canonical header for future reference.
For reference implementation, please see Xen network driver in Linux kernel.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Diffstat (limited to 'xen/include/public')
| -rw-r--r-- | xen/include/public/io/netif.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/xen/include/public/io/netif.h b/xen/include/public/io/netif.h index 9664998f05..d477751d73 100644 --- a/xen/include/public/io/netif.h +++ b/xen/include/public/io/netif.h @@ -57,6 +57,18 @@ */ /* + * "feature-split-event-channels" is introduced to separate guest TX + * and RX notification. Backend either doesn't support this feature or + * advertises 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: netif_tx_request -- NETTXF_* (any flags) * [Request 2: netif_tx_extra] (only if request 1 has NETTXF_extra_info) |