diff options
Diffstat (limited to 'src/drivers/net/netfront.h')
| -rw-r--r-- | src/drivers/net/netfront.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/drivers/net/netfront.h b/src/drivers/net/netfront.h index c95ed2645..dca3ff1c5 100644 --- a/src/drivers/net/netfront.h +++ b/src/drivers/net/netfront.h @@ -65,7 +65,7 @@ struct netfront_ring { size_t count; /** I/O buffers, indexed by buffer ID */ struct io_buffer **iobufs; - /** I/O buffer grant references, indexed by buffer ID */ + /** Grant references, indexed by buffer ID */ grant_ref_t *refs; /** Buffer ID ring */ @@ -117,6 +117,18 @@ netfront_ring_fill ( struct netfront_ring *ring ) { } /** + * Calculate descriptor ring remaining space + * + * @v ring Descriptor ring + * @v space Number of unused entries + */ +static inline __attribute__ (( always_inline )) unsigned int +netfront_ring_space ( struct netfront_ring *ring ) { + + return ( ring->count - netfront_ring_fill ( ring ) ); +} + +/** * Check whether or not descriptor ring is full * * @v ring Descriptor ring @@ -164,6 +176,8 @@ struct netfront_nic { struct io_buffer *rx_iobufs[NETFRONT_NUM_RX_DESC]; /** Receive I/O buffer IDs */ uint8_t rx_ids[NETFRONT_NUM_RX_DESC]; + /** Partial receive I/O buffer list */ + struct list_head rx_partial; /** Event channel */ struct evtchn_send event; |