ip4_packet.h File Reference

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Data Structures
union	ip4_address_t
struct	ip4_address_fib_t
struct	ip4_address_pair_t
struct	ip4_address_and_mask_t
union	ip4_header_t

Macros
#define	IP4_HEADER_FLAG_MORE_FRAGMENTS   (1 << 13)
#define	IP4_HEADER_FLAG_DONT_FRAGMENT   (1 << 14)
#define	IP4_HEADER_FLAG_CONGESTION   (1 << 15)
#define	IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS   ((4 << 4) | (sizeof (ip4_header_t) / sizeof (u32)))
#define	IP4_ROUTER_ALERT_OPTION   20
#define	ip4_partial_header_checksum_x1(ip0, sum0)
#define	ip4_partial_header_checksum_x2(ip0, ip1, sum0, sum1)

Functions
static void	ip4_addr_fib_init (ip4_address_fib_t *addr_fib, ip4_address_t *address, u32 fib_index)
static uword	ip4_address_netmask_length (ip4_address_t *a)
static int	ip4_get_fragment_offset (ip4_header_t *i)
static int	ip4_get_fragment_more (ip4_header_t *i)
static int	ip4_is_fragment (ip4_header_t *i)
static int	ip4_is_first_fragment (ip4_header_t *i)
static int	ip4_get_fragment_offset_bytes (ip4_header_t *i)
static int	ip4_header_bytes (ip4_header_t *i)
static void *	ip4_next_header (ip4_header_t *i)
static u16	ip4_header_checksum (ip4_header_t *i)
static uword	ip4_header_checksum_is_valid (ip4_header_t *i)
static uword	ip4_address_is_multicast (ip4_address_t *a)
static void	ip4_multicast_address_set_for_group (ip4_address_t *a, ip_multicast_group_t g)
static void	ip4_multicast_ethernet_address (u8 *ethernet_address, ip4_address_t *a)
static void	ip4_tcp_reply_x1 (ip4_header_t *ip0, tcp_header_t *tcp0)
static void	ip4_tcp_reply_x2 (ip4_header_t *ip0, ip4_header_t *ip1, tcp_header_t *tcp0, tcp_header_t *tcp1)

Macro Definition Documentation

#define IP4_HEADER_FLAG_CONGESTION   (1 << 15)

Definition at line 153 of file ip4_packet.h.

#define IP4_HEADER_FLAG_DONT_FRAGMENT   (1 << 14)

Definition at line 152 of file ip4_packet.h.

#define IP4_HEADER_FLAG_MORE_FRAGMENTS   (1 << 13)

Definition at line 151 of file ip4_packet.h.

#define ip4_partial_header_checksum_x1	(		ip0,
			sum0
	)

Value:

do {                                                                    \
  if (BITS (ip_csum_t) > 32)                                            \
    {                                                                   \
      sum0 = ip0->checksum_data_64[0];                                  \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_64[1]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_64_32[0]);    \
    }                                                                   \
  else                                                                  \
    {                                                                   \
      sum0 = ip0->checksum_data_32[0];                                  \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[1]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[2]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[3]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[4]);       \
    }                                                                   \
} while (0)

Definition at line 272 of file ip4_packet.h.

#define ip4_partial_header_checksum_x2	(		ip0,
			ip1,
			sum0,
			sum1
	)

Value:

do {                                                                    \
  if (BITS (ip_csum_t) > 32)                                            \
    {                                                                   \
      sum0 = ip0->checksum_data_64[0];                                  \
      sum1 = ip1->checksum_data_64[0];                                  \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_64[1]);       \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_64[1]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_64_32[0]);    \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_64_32[0]);    \
    }                                                                   \
  else                                                                  \
    {                                                                   \
      sum0 = ip0->checksum_data_32[0];                                  \
      sum1 = ip1->checksum_data_32[0];                                  \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[1]);       \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_32[1]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[2]);       \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_32[2]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[3]);       \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_32[3]);       \
      sum0 = ip_csum_with_carry (sum0, ip0->checksum_data_32[4]);       \
      sum1 = ip_csum_with_carry (sum1, ip1->checksum_data_32[4]);       \
    }                                                                   \
} while (0)

Definition at line 290 of file ip4_packet.h.

#define IP4_ROUTER_ALERT_OPTION   20

Definition at line 196 of file ip4_packet.h.

#define IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS   ((4 << 4) | (sizeof (ip4_header_t) / sizeof (u32)))

Definition at line 193 of file ip4_packet.h.

Function Documentation

static void ip4_addr_fib_init ( ip4_address_fib_t *  addr_fib, ip4_address_t *  address, u32  fib_index  )

inlinestatic

Definition at line 67 of file ip4_packet.h.

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static uword ip4_address_is_multicast ( ip4_address_t *  a )

inlinestatic

Definition at line 317 of file ip4_packet.h.

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static uword ip4_address_netmask_length ( ip4_address_t *  a )

inlinestatic

Definition at line 87 of file ip4_packet.h.

static int ip4_get_fragment_more ( ip4_header_t *  i )

inlinestatic

Definition at line 205 of file ip4_packet.h.

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static int ip4_get_fragment_offset ( ip4_header_t *  i )

inlinestatic

Definition at line 199 of file ip4_packet.h.

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static int ip4_get_fragment_offset_bytes ( ip4_header_t *  i )

inlinestatic

Definition at line 228 of file ip4_packet.h.

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static int ip4_header_bytes ( ip4_header_t *  i )

inlinestatic

Definition at line 234 of file ip4_packet.h.

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static u16 ip4_header_checksum ( ip4_header_t *  i )

inlinestatic

Definition at line 246 of file ip4_packet.h.

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static uword ip4_header_checksum_is_valid ( ip4_header_t *  i )

inlinestatic

Definition at line 267 of file ip4_packet.h.

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static int ip4_is_first_fragment ( ip4_header_t *  i )

inlinestatic

Definition at line 219 of file ip4_packet.h.

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static int ip4_is_fragment ( ip4_header_t *  i )

inlinestatic

Definition at line 212 of file ip4_packet.h.

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static void ip4_multicast_address_set_for_group ( ip4_address_t *  a, ip_multicast_group_t  g  )

inlinestatic

Definition at line 323 of file ip4_packet.h.

static void ip4_multicast_ethernet_address ( u8 *  ethernet_address, ip4_address_t *  a  )

inlinestatic

Definition at line 331 of file ip4_packet.h.

static void* ip4_next_header ( ip4_header_t *  i )

inlinestatic

Definition at line 240 of file ip4_packet.h.

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static void ip4_tcp_reply_x1 ( ip4_header_t *  ip0, tcp_header_t *  tcp0  )

inlinestatic

Definition at line 344 of file ip4_packet.h.

static void ip4_tcp_reply_x2 ( ip4_header_t *  ip0, ip4_header_t *  ip1, tcp_header_t *  tcp0, tcp_header_t *  tcp1  )

inlinestatic

Definition at line 360 of file ip4_packet.h.