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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, uint32_t fanout_group, uint32_t fanout_type);
extern void destroy_rx_ring(int sock, struct ring *ring);
extern int get_rx_net_stats(int sock, uint64_t *packets, uint64_t *drops, 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 void kernel_may_pull_from_rx(struct tpacket2_hdr *hdr)
{
hdr->tp_status = TP_STATUS_KERNEL;
}
#ifdef HAVE_TPACKET3
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_block(struct block_desc *pbd)
{
pbd->h1.block_status = TP_STATUS_KERNEL;
}
#endif /* HAVE_TPACKET3 */
/* Fanout types. */
#ifndef PACKET_FANOUT_HASH
# define PACKET_FANOUT_HASH 0
#endif
#ifndef PACKET_FANOUT_LB
# define PACKET_FANOUT_LB 1
#endif
#ifndef PACKET_FANOUT_CPU
# define PACKET_FANOUT_CPU 2
#endif
#ifndef PACKET_FANOUT_ROLLOVER
# define PACKET_FANOUT_ROLLOVER 3
#endif
#ifndef PACKET_FANOUT_RND
# define PACKET_FANOUT_RND 4
#endif
#ifndef PACKET_FANOUT_QM
# define PACKET_FANOUT_QM 5
#endif
#ifndef PACKET_FANOUT_FLAG_ROLLOVER
# define PACKET_FANOUT_FLAG_ROLLOVER 0x1000
#endif
#ifndef PACKET_FANOUT_FLAG_DEFRAG
# define PACKET_FANOUT_FLAG_DEFRAG 0x8000
#endif
#endif /* RX_RING_H */
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