ring: Move generic code for ring layout setup to own function

Initialization of the ring->layout members is the same for RX and TX
rings. Instead of duplicating the code in setup_rx_ring_layout() and
setup_tx_ring_layout(), create a new function
setup_ring_layout_generic() which is called from the former two.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/ring.h b/ring.h
index a195f74..0ac72bb 100644
--- a/ring.h
+++ b/ring.h
@@ -1,6 +1,7 @@
 /*
  * netsniff-ng - the packet sniffing beast
  * Copyright 2009, 2010 Daniel Borkmann.
+ * Copyright 2014, 2015 Tobias Klauser.
  * Subject to the GPL, version 2.
  */
 
@@ -196,6 +197,8 @@ static inline int get_sockopt_tpacket(int sock)
 	return val;
 }
 
+extern void setup_ring_layout_generic(int sock, struct ring *ring, size_t size,
+				      bool jumbo_support);
 extern void mmap_ring_generic(int sock, struct ring *ring);
 extern void alloc_ring_frames_generic(struct ring *ring, int num, size_t size);
 extern void bind_ring_generic(int sock, struct ring *ring, int ifindex, bool tx_only);