ip.h File Reference

ODP IP header. More...

#include <odp_api.h>
#include <odp/helper/chksum.h>
#include <string.h>

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Data Structures
struct	ODP_PACKED
	Ethernet MAC address. More...

Macros
#define	ODPH_IPV4   4
	IP version 4.
#define	ODPH_IPV4HDR_LEN   20
	Min length of IP header (no options)
#define	ODPH_IPV4HDR_IHL_MIN   5
	Minimum IHL value.
#define	ODPH_IPV4ADDR_LEN   4
	IPv4 address length in bytes.
#define	ODPH_IP_TOS_MAX_DSCP   63
	The one byte IPv4 tos or IPv6 tc field is composed of the following two subfields - a six bit Differentiated Service Code Point (DSCP) and a two bit Explicit Congestion Notification (ECN) subfield. More...
#define	ODPH_IP_TOS_DSCP_MASK   0xFC
	DSCP field is in bits <7:2>
#define	ODPH_IP_TOS_DSCP_SHIFT   2
	DSCP field is shifted letf by 2
#define	ODPH_IP_TOS_MAX_ECN   3
	2-bit ECN field has max value 3
#define	ODPH_IP_TOS_ECN_MASK   0x03
	ECN field is in bits <1:0>
#define	ODPH_IP_TOS_ECN_SHIFT   0
	ECN field is not shifted. More...
#define	ODPH_IP_ECN_NOT_ECT   0
	The following constants give names to the four possible ECN values, as described in RFC 3168. More...
#define	ODPH_IP_ECN_ECT1   1
	Indicates no congestion seen yet.
#define	ODPH_IP_ECN_ECT0   2
	Indicates no congestion seen yet.
#define	ODPH_IP_ECN_CE   3
	Used to signal Congestion Experienced.
#define	ODPH_IPV4HDR_VER(ver_ihl)   (((ver_ihl) & 0xf0) >> 4)
#define	ODPH_IPV4HDR_IHL(ver_ihl)   ((ver_ihl) & 0x0f)
#define	ODPH_IPV4HDR_DSCP(tos)   (((tos) & 0xfc) >> 2)
#define	ODPH_IPV4HDR_FLAGS_DONT_FRAG(frag_offset)   ((frag_offset) & 0x4000)
#define	ODPH_IPV4HDR_FLAGS_MORE_FRAGS(frag_offset)   ((frag_offset) & 0x2000)
#define	ODPH_IPV4HDR_FRAG_OFFSET(frag_offset)   ((frag_offset) & 0x1fff)
#define	ODPH_IPV4HDR_IS_FRAGMENT(frag_offset)   ((frag_offset) & 0x3fff)
#define	ODPH_IPV4HDR_CSUM_OFFSET   10
#define	ODPH_IPV6   6
	IPv6 version.
#define	ODPH_IPV6HDR_LEN   40
	IPv6 header length.
#define	ODPH_IPV6ADDR_LEN   16
	IPv6 address length in bytes.
#define	ODPH_IPV6HDR_VERSION_MASK   0xF0000000
	The following constants can be used to access the three subfields of the 4 byte ver_tc_flow field - namely the four bit Version subfield, the eight bit Traffic Class subfield (TC) and the twenty bit Flow Label subfield. More...
#define	ODPH_IPV6HDR_VERSION_SHIFT   28
	Version field shift.
#define	ODPH_IPV6HDR_TC_MASK   0x0FF00000
	TC field bit mask.
#define	ODPH_IPV6HDR_TC_SHIFT   20
	TC field shift.
#define	ODPH_IPV6HDR_FLOW_LABEL_MASK   0x000FFFFF
	Flow Label bit mask.
#define	ODPH_IPV6HDR_FLOW_LABEL_SHIFT   0
	Flow Label shift.
#define	ODPH_IPV6HDR_DSCP(ver_tc_flow)    (uint8_t)((((ver_tc_flow) & 0x0fc00000) >> 22) & 0xff)
#define	ODPH_IPPROTO_HOPOPTS   0x00
	IPv6 hop-by-hop options.
#define	ODPH_IPPROTO_ICMPV4   0x01
	Internet Control Message Protocol (1)
#define	ODPH_IPPROTO_IGMP   0x02
	Internet Group Message Protocol (1)
#define	ODPH_IPPROTO_TCP   0x06
	Transmission Control Protocol (6)
#define	ODPH_IPPROTO_UDP   0x11
	User Datagram Protocol (17)
#define	ODPH_IPPROTO_ROUTE   0x2B
	IPv6 Routing header (43)
#define	ODPH_IPPROTO_FRAG   0x2C
	IPv6 Fragment (44)
#define	ODPH_IPPROTO_AH   0x33
	Authentication Header (51)
#define	ODPH_IPPROTO_ESP   0x32
	Encapsulating Security Payload (50)
#define	ODPH_IPPROTO_ICMPV6   0x3A
	Internet Control Message Protocol (58)
#define	ODPH_IPPROTO_SCTP   0x84
	Stream Control Transmission protocol (132)
#define	ODPH_IPPROTO_INVALID   0xFF
	Reserved invalid by IANA.

Typedefs
typedef struct ODP_PACKED	odph_ipv4hdr_t
	IPv4 header.
typedef struct ODP_PACKED	odph_ipv6hdr_t
	IPv6 header.
typedef struct ODP_PACKED	odph_ipv6hdr_ext_t
	IPv6 Header extensions.

Functions
static int	odph_ipv4_csum (odp_packet_t pkt, uint32_t offset, odph_ipv4hdr_t *ip, odp_u16sum_t *chksum)
	Calculate IPv4 header checksum. More...
static int	odph_ipv4_csum_valid (odp_packet_t pkt)
	Check if IPv4 checksum is valid. More...
static int	odph_ipv4_csum_update (odp_packet_t pkt)
	Calculate and fill in IPv4 checksum. More...
int	odph_ipv4_addr_parse (uint32_t *ip_addr, const char *str)
	Parse IPv4 address from a string. More...

Detailed Description

ODP IP header.

Definition in file ip.h.