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/*
* 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(int sock, 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, bool jumbo_support, bool v3);
static inline int user_may_pull_from_rx(struct tpacket2_hdr *hdr)
{
return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER);
}
static inline int user_may_pull_from_rx_block(struct block_desc *pbd)
{
return ((pbd->h1.block_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;
}
static inline void kernel_may_pull_from_rx_block(struct block_desc *pbd)
{
pbd->h1.block_status = TP_STATUS_KERNEL;
}
#endif /* RX_RING_H */
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