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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 <stdbool.h>
#include "ring.h"
extern void ring_rx_setup(struct ring *ring, int sock, size_t size, int ifindex,
struct pollfd *poll, bool v3, bool jumbo_support,
bool verbose);
extern void destroy_rx_ring(int sock, struct ring *ring);
extern void sock_rx_net_stats(int sock, unsigned long seen);
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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