mirror of
https://gitea.osmocom.org/cellular-infrastructure/osmo-ggsn.git
synced 2025-10-23 00:12:08 +00:00
1dd16fa12f
Move all includes from /usr/include/….h to /usr/include/osmocom/gtp/….h to be more consistent with other Osmocom projects, and to not "pollute" the top include directory if we add more header files. Also the new directory structure makes more obvious, which headers are public and which ones aren't. Adjust libgtp.pc.in so both #include <gtp.h> (legacy) and #include <osmocom/gtp/gtp.h> can be used. Related: OS#6373 Change-Id: If7e01c61168819bf7120667344e40c857da5490b
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
#pragma once
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#include <stdbool.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/endian.h>
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#include <osmocom/gtp/gtp.h>
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#include <osmocom/gtp/pdp.h>
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#define ICMPv6_OPT_TYPE_PREFIX_INFO 0x03
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#define foreach_icmpv6_opt(icmpv6_pkt, icmpv6_len, opt_hdr) \
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for (opt_hdr = (struct icmpv6_opt_hdr *)(icmpv6_pkt)->options; \
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(uint8_t*)(opt_hdr) + sizeof(struct icmpv6_opt_hdr) <= (((uint8_t*)(icmpv6_pkt)) + (icmpv6_len)); \
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opt_hdr = (struct icmpv6_opt_hdr*)((uint8_t*)(opt_hdr) + (opt_hdr)->len) \
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)
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struct icmpv6_hdr {
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uint8_t type;
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uint8_t code;
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uint16_t csum;
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} __attribute__ ((packed));
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struct icmpv6_echo_hdr {
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struct icmpv6_hdr hdr;
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uint16_t ident; /* Identifier */
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uint16_t seq; /* Sequence number */
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uint8_t data[0]; /* Data */
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} __attribute__ ((packed));
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/* RFC4861 Section 4.1 */
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struct icmpv6_rsol_hdr {
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struct icmpv6_hdr hdr;
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uint32_t reserved;
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uint8_t options[0];
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} __attribute__ ((packed));
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/* RFC4861 Section 4.2 */
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struct icmpv6_radv_hdr {
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struct icmpv6_hdr hdr;
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uint8_t cur_ho_limit;
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#if OSMO_IS_LITTLE_ENDIAN
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uint8_t res:6,
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m:1,
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o:1;
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#elif OSMO_IS_BIG_ENDIAN
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/* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
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uint8_t o:1, m:1, res:6;
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#endif
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uint16_t router_lifetime;
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uint32_t reachable_time;
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uint32_t retrans_timer;
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uint8_t options[0];
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} __attribute__ ((packed));
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/* RFC4861 Section 4.6 */
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struct icmpv6_opt_hdr {
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uint8_t type;
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/* length in units of 8 octets, including type+len! */
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uint8_t len;
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uint8_t data[0];
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} __attribute__ ((packed));
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/* RFC4861 Section 4.6.2 */
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struct icmpv6_opt_prefix {
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struct icmpv6_opt_hdr hdr;
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uint8_t prefix_len;
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#if OSMO_IS_LITTLE_ENDIAN
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uint8_t res:6,
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a:1,
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l:1;
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#elif OSMO_IS_BIG_ENDIAN
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/* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
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uint8_t l:1, a:1, res:6;
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#endif
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uint32_t valid_lifetime;
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uint32_t preferred_lifetime;
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uint32_t res2;
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uint8_t prefix[16];
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} __attribute__ ((packed));
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uint16_t icmpv6_prepend_ip6hdr(struct msgb *msg, const struct in6_addr *saddr,
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const struct in6_addr *daddr);
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struct msgb *icmpv6_construct_rs(const struct in6_addr *saddr);
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int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp,
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const struct in6_addr *pdp_prefix,
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const struct in6_addr *own_ll_addr,
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const uint8_t *pack, unsigned len);
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struct icmpv6_radv_hdr *icmpv6_validate_router_adv(const uint8_t *pack, unsigned len);
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/* RFC3307 link-local scope multicast address */
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extern const struct in6_addr all_router_mcast_addr;
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