diff options
Diffstat (limited to 'ring_rx.h')
| -rw-r--r-- | ring_rx.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/ring_rx.h b/ring_rx.h new file mode 100644 index 0000000..8d695e5 --- /dev/null +++ b/ring_rx.h @@ -0,0 +1,31 @@ +/* + * netsniff-ng - the packet sniffing beast + * Copyright 2009, 2010 Daniel Borkmann. + * Subject to the GPL, version 2. + */ + +#ifndef RX_RING_H +#define RX_RING_H + +#include "ring.h" +#include "built_in.h" + +extern void destroy_rx_ring(int sock, struct ring *ring); +extern void create_rx_ring(int sock, struct ring *ring, int verbose); +extern void mmap_rx_ring(int sock, struct ring *ring); +extern void alloc_rx_ring_frames(struct ring *ring); +extern void bind_rx_ring(int sock, struct ring *ring, int ifindex); +extern void setup_rx_ring_layout(int sock, struct ring *ring, + unsigned int size, int jumbo_support); + +static inline int user_may_pull_from_rx(struct tpacket2_hdr *hdr) +{ + return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER); +} + +static inline void kernel_may_pull_from_rx(struct tpacket2_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_KERNEL; +} + +#endif /* RX_RING_H */ |