/* * Copyright (c) 1992-2001 by Sun Microsystems, Inc. * All rights reserved. */ #ifndef _INET_IP_H #define _INET_IP_H #pragma ident "@(#)ip.h 1.95 01/09/25 SMI" #ifdef __cplusplus extern "C" { #endif #include #include #include #include #include #include #define IP_DEBUG /* Minor numbers */ #define IPV4_MINOR 0 #define IPV6_MINOR 1 #ifndef _IPADDR_T #define _IPADDR_T typedef uint32_t ipaddr_t; #endif /* Number of bits in an address */ #define IP_ABITS 32 #define IPV6_ABITS 128 #define IP_HOST_MASK (ipaddr_t)0xffffffffU #define IP_CSUM(mp, off, sum) (~ip_cksum(mp, off, sum) & 0xFFFF) #define IP_CSUM_PARTIAL(mp, off, sum) ip_cksum(mp, off, sum) #define IP_BCSUM_PARTIAL(bp, len, sum) bcksum(bp, len, sum) /* * Flag to IP write side to not compute the TCP/UDP checksums. * Stored in ipha_ident (which is otherwise zero). */ #define NO_IP_TP_CKSUM 0xFFFF #define ILL_FRAG_HASH_TBL_COUNT ((unsigned int)64) #define ILL_FRAG_HASH_TBL_SIZE (ILL_FRAG_HASH_TBL_COUNT * sizeof (ipfb_t)) #define IP_DEV_NAME "/dev/ip" #define IP_MOD_NAME "ip" #define IPV4_ADDR_LEN 4 #define IP_ADDR_LEN IPV4_ADDR_LEN #define IP_ARP_PROTO_TYPE 0x0800 #define IPV4_VERSION 4 #define IP_VERSION IPV4_VERSION #define IP_SIMPLE_HDR_LENGTH_IN_WORDS 5 #define IP_SIMPLE_HDR_LENGTH 20 #define IP_MAX_HDR_LENGTH 60 #define IP_MIN_MTU (IP_MAX_HDR_LENGTH + 8) /* 68 bytes */ /* * XXX IP_MAXPACKET is defined in as well. At some point the * 2 files should be cleaned up to remove all redundant definitions. */ #define IP_MAXPACKET 65535 #define IP_SIMPLE_HDR_VERSION \ ((IP_VERSION << 4) | IP_SIMPLE_HDR_LENGTH_IN_WORDS) /* * Constants and type definitions to support IP IOCTL commands */ #define IP_IOCTL (('i'<<8)|'p') #define IP_IOC_IRE_DELETE 4 #define IP_IOC_IRE_DELETE_NO_REPLY 5 #define IP_IOC_IRE_ADVISE_NO_REPLY 6 #define IP_IOC_RTS_REQUEST 7 /* Common definitions used by IP IOCTL data structures */ typedef struct ipllcmd_s { uint_t ipllc_cmd; uint_t ipllc_name_offset; uint_t ipllc_name_length; } ipllc_t; /* IP IRE Change Command Structure. */ typedef struct ipic_s { ipllc_t ipic_ipllc; uint_t ipic_ire_type; uint_t ipic_max_frag; uint_t ipic_addr_offset; uint_t ipic_addr_length; uint_t ipic_mask_offset; uint_t ipic_mask_length; uint_t ipic_src_addr_offset; uint_t ipic_src_addr_length; uint_t ipic_ll_hdr_offset; uint_t ipic_ll_hdr_length; uint_t ipic_gateway_addr_offset; uint_t ipic_gateway_addr_length; clock_t ipic_rtt; uint32_t ipic_ssthresh; clock_t ipic_rtt_sd; } ipic_t; #define ipic_cmd ipic_ipllc.ipllc_cmd #define ipic_ll_name_length ipic_ipllc.ipllc_name_length #define ipic_ll_name_offset ipic_ipllc.ipllc_name_offset /* IP IRE Delete Command Structure. */ typedef struct ipid_s { ipllc_t ipid_ipllc; uint_t ipid_ire_type; uint_t ipid_addr_offset; uint_t ipid_addr_length; uint_t ipid_mask_offset; uint_t ipid_mask_length; } ipid_t; #define ipid_cmd ipid_ipllc.ipllc_cmd /* IP Options */ #ifndef IPOPT_EOL #define IPOPT_EOL 0x00 #define IPOPT_NOP 0x01 #define IPOPT_RR 0x07 #define IPOPT_IT 0x44 #define IPOPT_SEC 0x82 #define IPOPT_LSRR 0x83 #define IPOPT_EXTSEC 0x85 #define IPOPT_COMSEC 0x86 #define IPOPT_SID 0x88 #define IPOPT_SSRR 0x89 #define IPOPT_RALERT 0x94 #define IPOPT_SDMDD 0x95 /* Bits in the option value */ #define IPOPT_COPY 0x80 #endif /* IPOPT_EOL */ /* IP option header indexes */ #define IPOPT_POS_VAL 0 #define IPOPT_POS_LEN 1 #define IPOPT_POS_OFF 2 #define IPOPT_POS_OV_FLG 3 /* Minimum for src and record route options */ #define IPOPT_MINOFF_SR 4 /* Minimum for timestamp option */ #define IPOPT_MINOFF_IT 5 #define IPOPT_MINLEN_IT 5 /* Timestamp option flag bits */ #define IPOPT_IT_TIME 0 /* Only timestamp */ #define IPOPT_IT_TIME_ADDR 1 /* Timestamp + IP address */ #define IPOPT_IT_SPEC 3 /* Only listed routers */ #define IPOPT_IT_SPEC_BSD 2 /* Defined fopr BSD compat */ #define IPOPT_IT_TIMELEN 4 /* Timestamp size */ /* Controls forwarding of IP packets, set via ndd */ #define IP_FORWARD_NEVER 0 #define IP_FORWARD_ALWAYS 1 #define WE_ARE_FORWARDING (ip_g_forward == IP_FORWARD_ALWAYS) #define IPH_HDR_LENGTH(ipha) \ ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length & 0xF) << 2) #define IPH_HDR_VERSION(ipha) \ ((int)(((ipha_t *)ipha)->ipha_version_and_hdr_length) >> 4) #ifdef _KERNEL /* * IP reassembly macros. We hide starting and ending offsets in b_next and * b_prev of messages on the reassembly queue. The messages are chained using * b_cont. These macros are used in ip_reassemble() so we don't have to see * the ugly casts and assignments. * Note that the offsets are <= 64k i.e. a uint_t is sufficient to represent * them. */ #define IP_REASS_START(mp) ((uint_t)((mp)->b_next)) #define IP_REASS_SET_START(mp, u) ((mp)->b_next = (mblk_t *)(u)) #define IP_REASS_END(mp) ((uint_t)((mp)->b_prev)) #define IP_REASS_SET_END(mp, u) ((mp)->b_prev = (mblk_t *)(u)) /* Privilege check for an IP instance of unknown type. wq is write side. */ #define IS_PRIVILEGED_QUEUE(wq) \ ((wq)->q_next ? (((ill_t *)(wq)->q_ptr)->ill_priv_stream) \ : (((ipc_t *)(wq)->q_ptr)->ipc_priv_stream)) /* * Flags for the various ip_fanout_* routines. */ #define IP_FF_SEND_ICMP 0x01 /* Send an ICMP error */ #define IP_FF_HDR_COMPLETE 0x02 /* Call ip_hdr_complete if error */ #define IP_FF_CKSUM 0x04 /* Recompute ipha_cksum if error */ #define IP_FF_RAWIP 0x08 /* Use rawip mib variable */ #define IP_FF_SRC_QUENCH 0x10 /* OK to send ICMP_SOURCE_QUENCH */ #define IP_FF_SYN_ADDIRE 0x20 /* Add IRE if TCP syn packet */ #define IP_FF_PROXY_ONLY 0x40 /* Only match proxy listeners */ #define IP_FF_IP6INFO 0x80 /* Add ip6i_t if needed */ #define IP_FF_SEND_SLLA 0x100 /* Send source link layer info ? */ #ifdef _BIG_ENDIAN #define IP_UDP_HASH(port) ((port) & 0xFF) #else /* _BIG_ENDIAN */ #define IP_UDP_HASH(port) (((uint16_t)(port)) >> 8) #endif /* _BIG_ENDIAN */ #ifndef IRE_DB_TYPE #define IRE_DB_TYPE M_SIG #endif #ifndef IRE_DB_REQ_TYPE #define IRE_DB_REQ_TYPE M_PCSIG #endif /* * This is part of the interface between Transport provider and * IP which can be used to set policy information. This is usually * accompanied with O_T_BIND_REQ/T_BIND_REQ.ip_bind assumes that * only IPSEC_POLICY_SET is there when it is found in the chain. * The information contained is an struct ipsec_req_t. On success * or failure, either the T_BIND_ACK or the T_ERROR_ACK is returned. * IPSEC_POLICY_SET is never returned. */ #define IPSEC_POLICY_SET M_SETOPTS #define IRE_IS_LOCAL(ire) ((ire != NULL) && \ ((ire)->ire_type & (IRE_LOCAL | IRE_LOOPBACK))) #define IRE_IS_TARGET(ire) ((ire != NULL) && \ ((ire)->ire_type != IRE_BROADCAST)) /* IP Fragmentation Reassembly Header */ typedef struct ipf_s { struct ipf_s *ipf_hash_next; struct ipf_s **ipf_ptphn; /* Pointer to previous hash next. */ uint32_t ipf_ident; /* Ident to match. */ uint8_t ipf_protocol; /* Protocol to match. */ uchar_t ipf_last_frag_seen : 1; /* Last fragment seen ? */ time_t ipf_timestamp; /* Reassembly start time. */ mblk_t *ipf_mp; /* mblk we live in. */ mblk_t *ipf_tail_mp; /* Frag queue tail pointer. */ int ipf_hole_cnt; /* Number of holes (hard-case). */ int ipf_end; /* Tail end offset (0 -> hard-case). */ int ipf_stripped_hdr_len; /* What we've stripped from */ /* the lead mblk. */ uint16_t ipf_checksum; /* Partial checksum of fragment data */ uint16_t ipf_checksum_valid; uint_t ipf_gen; /* Frag queue generation */ size_t ipf_count; /* Count of bytes used by frag */ uint_t ipf_nf_hdr_len; /* Length of nonfragmented header */ in6_addr_t ipf_v6src; /* IPv6 source address */ in6_addr_t ipf_v6dst; /* IPv6 dest address */ uint_t ipf_prev_nexthdr_offset; /* Offset for nexthdr value */ } ipf_t; #define ipf_src V4_PART_OF_V6(ipf_v6src) #define ipf_dst V4_PART_OF_V6(ipf_v6dst) /* IP packet count structure */ typedef struct ippc_s { in6_addr_t ippc_v6addr; uint_t ippc_ib_pkt_count; uint_t ippc_ob_pkt_count; uint_t ippc_fo_pkt_count; } ippc_t; #define ippc_addr V4_PART_OF_V6(ippc_v6addr) #endif /* _KERNEL */ /* ICMP types */ #define ICMP_ECHO_REPLY 0 #define ICMP_DEST_UNREACHABLE 3 #define ICMP_SOURCE_QUENCH 4 #define ICMP_REDIRECT 5 #define ICMP_ECHO_REQUEST 8 #define ICMP_ROUTER_ADVERTISEMENT 9 #define ICMP_ROUTER_SOLICITATION 10 #define ICMP_TIME_EXCEEDED 11 #define ICMP_PARAM_PROBLEM 12 #define ICMP_TIME_STAMP_REQUEST 13 #define ICMP_TIME_STAMP_REPLY 14 #define ICMP_INFO_REQUEST 15 #define ICMP_INFO_REPLY 16 #define ICMP_ADDRESS_MASK_REQUEST 17 #define ICMP_ADDRESS_MASK_REPLY 18 /* ICMP_TIME_EXCEEDED codes */ #define ICMP_TTL_EXCEEDED 0 #define ICMP_REASSEMBLY_TIME_EXCEEDED 1 /* ICMP_DEST_UNREACHABLE codes */ #define ICMP_NET_UNREACHABLE 0 #define ICMP_HOST_UNREACHABLE 1 #define ICMP_PROTOCOL_UNREACHABLE 2 #define ICMP_PORT_UNREACHABLE 3 #define ICMP_FRAGMENTATION_NEEDED 4 #define ICMP_SOURCE_ROUTE_FAILED 5 #define ICMP_DEST_NET_UNKNOWN 6 #define ICMP_DEST_HOST_UNKNOWN 7 #define ICMP_SRC_HOST_ISOLATED 8 #define ICMP_DEST_NET_UNREACH_ADMIN 9 #define ICMP_DEST_HOST_UNREACH_ADMIN 10 #define ICMP_DEST_NET_UNREACH_TOS 11 #define ICMP_DEST_HOST_UNREACH_TOS 12 /* ICMP Header Structure */ typedef struct icmph_s { uint8_t icmph_type; uint8_t icmph_code; uint16_t icmph_checksum; union { struct { /* ECHO request/response structure */ uint16_t u_echo_ident; uint16_t u_echo_seqnum; } u_echo; struct { /* Destination unreachable structure */ uint16_t u_du_zero; uint16_t u_du_mtu; } u_du; struct { /* Parameter problem structure */ uint8_t u_pp_ptr; uint8_t u_pp_rsvd[3]; } u_pp; struct { /* Redirect structure */ ipaddr_t u_rd_gateway; } u_rd; } icmph_u; } icmph_t; #define icmph_echo_ident icmph_u.u_echo.u_echo_ident #define icmph_echo_seqnum icmph_u.u_echo.u_echo_seqnum #define icmph_du_zero icmph_u.u_du.u_du_zero #define icmph_du_mtu icmph_u.u_du.u_du_mtu #define icmph_pp_ptr icmph_u.u_pp.u_pp_ptr #define icmph_rd_gateway icmph_u.u_rd.u_rd_gateway #define ICMPH_SIZE 8 /* Aligned IP header */ typedef struct ipha_s { uint8_t ipha_version_and_hdr_length; uint8_t ipha_type_of_service; uint16_t ipha_length; uint16_t ipha_ident; uint16_t ipha_fragment_offset_and_flags; uint8_t ipha_ttl; uint8_t ipha_protocol; uint16_t ipha_hdr_checksum; ipaddr_t ipha_src; ipaddr_t ipha_dst; } ipha_t; #define IPH_DF 0x4000 /* Don't fragment */ #define IPH_MF 0x2000 /* More fragments to come */ #define IPH_OFFSET 0x1FFF /* Where the offset lives */ #define IPH_FRAG_HDR 0x8000 /* IPv6 don't fragment bit */ /* IP Mac info structure */ typedef struct ip_m_s { t_uscalar_t ip_m_mac_type; /* From */ int ip_m_type; /* From */ t_uscalar_t ip_m_sap; t_scalar_t ip_m_sap_length; /* From */ t_scalar_t ip_m_brdcst_addr_length; uchar_t *ip_m_brdcst_addr; } ip_m_t; /* Router entry types */ #define IRE_BROADCAST 0x0001 /* Route entry for broadcast address */ #define IRE_DEFAULT 0x0002 /* Route entry for default gateway */ #define IRE_LOCAL 0x0004 /* Route entry for local address */ #define IRE_LOOPBACK 0x0008 /* Route entry for loopback address */ #define IRE_PREFIX 0x0010 /* Route entry for prefix routes */ #define IRE_CACHE 0x0020 /* Cached Route entry */ #define IRE_IF_NORESOLVER 0x0040 /* Route entry for local interface */ /* net without any address mapping. */ #define IRE_IF_RESOLVER 0x0080 /* Route entry for local interface */ /* net with resolver. */ #define IRE_HOST 0x0100 /* Host route entry */ #define IRE_HOST_REDIRECT 0x0200 /* Host route entry from redirects */ /* * IRE_MIPRTUN is only set on the ires in the ip_mrtun_table. * This ire_type must not be set for ftable and ctable routing entries. */ #define IRE_MIPRTUN 0x0400 /* Reverse tunnel route entry */ #define IRE_INTERFACE (IRE_IF_NORESOLVER | IRE_IF_RESOLVER) #define IRE_OFFSUBNET (IRE_DEFAULT | IRE_PREFIX | IRE_HOST | \ IRE_HOST_REDIRECT) #define IRE_CACHETABLE (IRE_CACHE | IRE_BROADCAST | IRE_LOCAL | \ IRE_LOOPBACK) #define IRE_FORWARDTABLE (IRE_INTERFACE | IRE_OFFSUBNET) /* * If an IRE is marked with IRE_MARK_CONDEMNED, the last walker of * the bucket should delete this IRE from this bucket. */ #define IRE_MARK_CONDEMNED 0x0001 /* * If a broadcast IRE is marked with IRE_MARK_NORECV, ip_rput will drop the * broadcast packets received on that interface. This is marked only * on broadcast ires. */ #define IRE_MARK_NORECV 0x0002 /* * IRE_CACHE marked this way won't be returned by ire_cache_lookup. Need * to look specifically using MATCH_IRE_MARK_HIDDEN. */ #define IRE_MARK_HIDDEN 0x0004 /* * ire with IRE_MARK_NOADD is created in ip_newroute_ipif, when outgoing * interface is specified by IP_UNICAST_IF socket option. This ire is not * added in IRE_CACHE. For example, this is used by mipagent to prevent * any entry to be added in the cache table. We do not want to add any * entry for a mobile-node in the routing table for foreign agent originated * packets. Adding routes in cache table in this case, may run the risks of * incorrect routing path in case of private overlapping addresses. */ #define IRE_MARK_NOADD 0x0008 /* Mark not to add ire in cache */ /* * IRE marked with IRE_MARK_TEMPORARY means that this IRE has been used * either for forwarding a packet or has not been used for sending * traffic on TCP connections terminated on this system. In both * cases, this IRE is the first to go when IRE is being cleaned up. */ #define IRE_MARK_TEMPORARY 0x0010 /* Flags with ire_expire routine */ #define FLUSH_ARP_TIME 0x0001 /* ARP info potentially stale timer */ #define FLUSH_REDIRECT_TIME 0x0002 /* Redirects potentially stale */ #define FLUSH_MTU_TIME 0x0004 /* Include path MTU per RFC 1191 */ /* Arguments to ire_flush_cache() */ #define IRE_FLUSH_DELETE 0 #define IRE_FLUSH_ADD 1 /* * Open/close synchronization flags. * These are kept in a separate field in the ipc/ill and the synchronization * depends on the atomic 32 bit access to that field. */ #define IPCF_CLOSING 0x01 /* ip_close waiting for ip_wsrv */ #define IPCF_CLOSE_DONE 0x02 /* ip_wsrv signalling ip_close */ #define IPCF_OPENING 0x04 /* ip_open waiting for ip_wsrv */ #define IPCF_OPEN_DONE 0x08 /* ip_wsrv signalling ip_open */ /* Used by proxy listeners to pick up packets in the forwarding path. */ typedef struct proxy_addr { ipaddr_t pa_addr; ipaddr_t pa_mask; struct proxy_addr *pa_next; } proxy_addr_t; #ifdef _KERNEL /* Group membership list per upper ipc */ /* * XXX add ilg info for ifaddr/ifindex. * XXX can we make ilg survive an ifconfig unplumb + plumb * by setting the ipif/ill to NULL and recover that later? * * ilg_ipif is used by IPv4 as multicast groups are joined using an interface * address (ipif). * ilg_ill is used by IPv6 as multicast groups are joined using an interface * index (phyint->phyint_ifindex). * ilg_ill is NULL for IPv4 and ilg_ipif is NULL for IPv6. * * ilg records the state of multicast memberships of a socket end point. * ilm records the state of multicast memberships with the driver and is * maintained per interface. * * Notes : * * 1) There is no direct link between a given ilg and ilm. If the * application has joined a group G with ifindex I, we will have * an ilg with ilg_v6group and ilg_ill. There will be a corresponding * ilm with ilm_ill/ilm_v6addr recording the multicast membership. * To delete the membership, * * a) Search for ilg matching on G and I with ilg_v6group * and ilg_ill. Delete ilg_ill. * b) Search the corresponding ilm matching on G and I with * ilm_v6addr and ilm_ill. Delete ilm. * * In IPv4, the only difference is, we look using ipifs instead of * ills. * * 2) With IP multipathing, we want to keep receiving even after the * interface has failed. We do this by moving multicast memberships * to a new_ill within the group. This is acheived by sending * DL_DISABMULTI_REQS on ilg_ill/ilm_ill and sending DL_ENABMULTIREQS * on the new_ill and changing ilg_ill/ilm_ill to new_ill. But, we * need to be able to delete memberships which will still come down * with the ifindex of the old ill which is what the application * knows of. Thus we store the ilm_/ilg_orig_ifindex to keep track * of where we joined initially so that we can lookup even after we * moved the membership. It is also used for moving back the membership * when the old ill has been repaired. This is done by looking up for * ilms with ilm_orig_ifindex matching on the old ill's ifindex. Only * ilms actually move from old ill to new ill. ilgs don't move (just * the ilg_ill is changed when it moves) as it just records the state * of the application that has joined a group G where as ilm records * the state joined with the driver. Thus when we send DL_XXXMULTI_REQs * we also need to keep the ilm in the right ill. * * In IPv4, as ipifs move from old ill to new_ill, ilgs and ilms move * implicitly as we use only ipifs in IPv4. Thus, one can always lookup * a given ilm/ilg even after it fails without the support of * orig_ifindex. We move ilms still to record the driver state as * mentioned above. */ typedef struct ilg_s { in6_addr_t ilg_v6group; struct ipif_s *ilg_ipif; /* Logical interface we are member on */ struct ill_s *ilg_ill; /* Used by IPv6 */ int ilg_orig_ifindex; /* Interface originally joined on */ } ilg_t; /* * Multicast address list entry for lower ill. * ilm_ipif is used by IPv4 as multicast groups are joined using ipif. * ilm_ill is used by IPv6 as multicast groups are joined using ill. * ilm_ill is NULL for IPv4 and ilm_ipif is NULL for IPv6. */ typedef struct ilm_s { in6_addr_t ilm_v6addr; int ilm_refcnt; uint_t ilm_timer; /* IGMP */ struct ipif_s *ilm_ipif; /* Back pointer to ipif for IPv4 */ struct ilm_s *ilm_next; /* Linked list for each ill */ uint_t ilm_state; /* state of the membership */ struct ill_s *ilm_ill; /* Back pointer to ill for IPv6 */ int ilm_orig_ifindex; /* V6_MULTICAST_IF/ilm_ipif index */ } ilm_t; #define ilm_addr V4_PART_OF_V6(ilm_v6addr) /* IP client structure, allocated when ip_open indicates a STREAM device */ typedef struct ipc_s { struct ipc_s *ipc_hash_next; /* Hash chain must be first */ struct ipc_s **ipc_ptphn; /* Pointer to previous hash next. */ kmutex_t ipc_irc_lock; /* Lock to protect ipc_ire_cache */ struct ire_s *ipc_ire_cache; /* Cached IRE_CACHE */ queue_t *ipc_rq; queue_t *ipc_wq; kmutex_t *ipc_fanout_lock; /* hash bucket lock when ptphn set */ struct ill_s *ipc_pending_ill; /* Waiting for ioctl on ill */ /* Should match ill_pending_q */ struct { in6_addr_t ipcua_laddr; /* Local address */ in6_addr_t ipcua_faddr; /* Remote address. 0 => */ /* not connected */ } ipcua_v6addr; #define ipc_laddr V4_PART_OF_V6(ipcua_v6addr.ipcua_laddr) #define ipc_faddr V4_PART_OF_V6(ipcua_v6addr.ipcua_faddr) #define ipc_v6laddr ipcua_v6addr.ipcua_laddr #define ipc_v6faddr ipcua_v6addr.ipcua_faddr union { struct { uint16_t ipcu_fport; /* Remote port */ uint16_t ipcu_lport; /* Local port */ } ipcu_ports1; uint32_t ipcu_ports2; /* Rem port, local port */ /* Used for TCP_MATCH performance */ } ipc_ipcu; #define ipc_lport ipc_ipcu.ipcu_ports1.ipcu_lport #define ipc_fport ipc_ipcu.ipcu_ports1.ipcu_fport #define ipc_ports ipc_ipcu.ipcu_ports2 kmutex_t ipc_reflock; /* Protects ipc_refcnt */ ushort_t ipc_refcnt; /* Number of pending upstream msg */ kcondvar_t ipc_refcv; /* Wait for refcnt decrease */ ilg_t *ipc_ilg; /* Group memberships */ int ipc_ilg_allocated; /* Number allocated */ int ipc_ilg_inuse; /* Number currently used */ struct ipif_s *ipc_multicast_ipif; /* IP_MULTICAST_IF (IPv4) */ struct ill_s *ipc_multicast_ill; /* IP_MULTICAST_IF (IPv6) */ struct ill_s *ipc_incoming_ill; /* IP{,V6}_BOUND_IF */ struct ill_s *ipc_outgoing_ill; /* IP{,V6}_BOUND_IF */ uint_t ipc_close_flags; /* IPCF_* flags for close synch */ uint_t ipc_proto; /* SO_PROTOTYPE state */ unsigned int ipc_dontroute : 1, /* SO_DONTROUTE state */ ipc_loopback : 1, /* SO_LOOPBACK state */ ipc_broadcast : 1, /* SO_BROADCAST state */ ipc_reuseaddr : 1, /* SO_REUSEADDR state */ ipc_multicast_loop : 1, /* IP_MULTICAST_LOOP */ ipc_multi_router : 1, /* Wants all multicast pkts */ ipc_priv_stream : 1, /* Privileged client? */ ipc_draining : 1, /* ip_wsrv running */ ipc_did_putbq : 1, /* ip_wput did a putbq */ ipc_unspec_src : 1, /* IP_UNSPEC_SRC */ ipc_proxy_listen : 1, /* proxy listener is active */ ipc_policy_cached : 1, /* Is policy cached/latched ? */ ipc_in_enforce_policy : 1, /* Enforce Policy on inbound */ ipc_out_enforce_policy : 1, /* Enforce Policy on outbound */ ipc_af_isv6 : 1, /* ip address family ver 6 */ ipc_pkt_isv6 : 1, /* ip packet format ver 6 */ ipc_ipv6_recvpktinfo : 1, /* IPV6_RECVPKTINFO option */ ipc_ipv6_recvhoplimit : 1, /* IPV6_RECVHOPLIMIT option */ ipc_ipv6_recvhopopts : 1, /* IPV6_RECVHOPOPTS option */ ipc_ipv6_recvdstopts : 1, /* IPV6_RECVDSTOPTS option */ ipc_ipv6_recvrthdr : 1, /* IPV6_RECVRTHDR option */ ipc_ipv6_recvrtdstopts : 1, /* IPV6_RECVRTHDRDSTOPTS */ ipc_fully_bound : 1, /* Fully bound connection */ ipc_recvif : 1, /* IP_RECVIF option */ ipc_recvslla : 1, /* IP_RECVSLLA option */ ipc_pad_to_bit_31 : 7; uint_t ipc_proxy_ib_pkt_count; /* # of pkts this proxy has picked up */ proxy_addr_t *ipc_palist; /* list of proxy addr/mask */ uchar_t ipc_ulp; /* Upper layer protocol */ ipsec_req_t *ipc_outbound_policy; /* Outbound Policy information */ ipsec_req_t *ipc_inbound_policy; /* Inbound Policy information */ mblk_t *ipc_ipsec_out; /* Sent up with unbind ACK */ mblk_t *ipc_ipsec_req_in; /* for TCP connections */ struct ill_s *ipc_outgoing_pill; /* IP{,V6}_BOUND_PIF */ struct ill_s *ipc_nofailover_ill; /* IFF_NOFAILOVER bind */ struct ill_s *ipc_unicast_if_ill; /* IP_UNICAST_IF */ int ipc_orig_bound_ifindex; /* BOUND_IF before MOVE */ int ipc_orig_multicast_ifindex; /* MULTI. IF before MOVE */ int ipc_orig_unicast_ifindex; /* UNICAST_IF before move */ } ipc_t; #define ipc_out_ah_req ipc_outbound_policy->ipsr_ah_req #define ipc_out_auth_alg ipc_outbound_policy->ipsr_auth_alg #define ipc_out_esp_req ipc_outbound_policy->ipsr_esp_req #define ipc_out_esp_alg ipc_outbound_policy->ipsr_esp_alg #define ipc_out_esp_auth_alg ipc_outbound_policy->ipsr_esp_auth_alg #define ipc_out_self_encap_req ipc_outbound_policy->ipsr_self_encap_req #define ipc_in_ah_req ipc_inbound_policy->ipsr_ah_req #define ipc_in_auth_alg ipc_inbound_policy->ipsr_auth_alg #define ipc_in_esp_req ipc_inbound_policy->ipsr_esp_req #define ipc_in_esp_alg ipc_inbound_policy->ipsr_esp_alg #define ipc_in_esp_auth_alg ipc_inbound_policy->ipsr_esp_auth_alg #define ipc_in_self_encap_req ipc_inbound_policy->ipsr_self_encap_req /* * This is used to match an inbound/outbound datagram with * policy. */ typedef struct ipsec_selector { ipaddr_t src_addr; ipaddr_t src_mask; ipaddr_t dst_addr; ipaddr_t dst_mask; uint16_t src_port; uint16_t dst_port; uint8_t protocol; boolean_t outbound; } ipsec_selector_t; /* * Macros used when sending data upstream using the fanout lists. * Needed to prevent the ipc stream from closing while there * is a reference to its queue. * * The ipc_refcnt does not capture all threads accessing an ipc. * Those that are running in ip_open, ip_close, put, or srv in the * queues corresponding to the ipc do not hold a refcnt. The refcnt only * captures other threads (e.g. the fanout of inbound packets) that * need to access the ipc. * * Note: In order to guard against the hash table changing * the caller of IPC_REFHOLD must hold the lock on the hash bucket. */ #define IPC_REFHOLD(ipc) { \ ASSERT(ipc->ipc_fanout_lock != NULL); \ ASSERT(MUTEX_HELD(ipc->ipc_fanout_lock)); \ mutex_enter(&(ipc)->ipc_reflock); \ (ipc)->ipc_refcnt++; \ ASSERT((ipc)->ipc_refcnt != 0); \ mutex_exit(&(ipc)->ipc_reflock); \ } #define IPC_REFRELE(ipc) { \ mutex_enter(&(ipc)->ipc_reflock); \ ASSERT((ipc)->ipc_refcnt != 0); \ (ipc)->ipc_refcnt--; \ cv_broadcast(&(ipc)->ipc_refcv); \ mutex_exit(&(ipc)->ipc_reflock); \ } /* Values used in IP by IPSEC Code */ #define IPSEC_OUTBOUND B_TRUE #define IPSEC_INBOUND B_FALSE /* * There are two variants in policy failures. The packet may come in * secure when not needed (IPSEC_POLICY_???_NOT_NEEDED) or it may not * have the desired level of protection (IPSEC_POLICY_MISMATCH). */ #define IPSEC_POLICY_NOT_NEEDED 0 #define IPSEC_POLICY_MISMATCH 1 #define IPSEC_POLICY_AUTH_NOT_NEEDED 2 #define IPSEC_POLICY_ENCR_NOT_NEEDED 3 #define IPSEC_POLICY_SE_NOT_NEEDED 4 #define IPSEC_POLICY_MAX 5 /* Always max + 1. */ /* * Information cached in IRE for upper layer protocol (ULP). * * Notice that ire_max_frag is not included in the iulp_t structure, which * it may seem that it should. But ire_max_frag cannot really be cached. It * is fixed for each interface. For MTU found by PMTUd, we may want to cache * it. But currently, we do not do that. */ typedef struct iulp_s { boolean_t iulp_set; /* Is any metric set? */ uint32_t iulp_ssthresh; /* Slow start threshold (TCP). */ clock_t iulp_rtt; /* Guestimate in millisecs. */ clock_t iulp_rtt_sd; /* Cached value of RTT variance. */ uint32_t iulp_spipe; /* Send pipe size. */ uint32_t iulp_rpipe; /* Receive pipe size. */ uint32_t iulp_rtomax; /* Max round trip timeout. */ uint32_t iulp_sack; /* Use SACK option (TCP)? */ uint32_t iulp_tstamp_ok : 1, /* Use timestamp option (TCP)? */ iulp_wscale_ok : 1, /* Use window scale option (TCP)? */ iulp_ecn_ok : 1, /* Enable ECN (for TCP)? */ iulp_pmtud_ok : 1, /* Enable PMTUd? */ iulp_not_used : 28; } iulp_t; /* Zero iulp_t. */ extern const iulp_t ire_uinfo_null; /* * The IP Client Fanout structure. * The hash tables and their linkage (ipc_hash_next, ipc_hash_ptpn) are * protected by the per-bucket icf_lock. Each ipc_t inserted in * the list points back at this lock using ipc_fanout_lock. */ typedef struct icf_s { ipc_t *icf_ipc; kmutex_t icf_lock; } icf_t; /* * Interface route structure which holds the necessary information to recreate * routes that are tied to an interface (namely where ire_ipif != NULL). * These routes which were initially created via a routing socket or via the * SIOCADDRT ioctl may be gateway routes (RTF_GATEWAY being set) or may be * traditional interface routes. When an interface comes back up after being * marked down, this information will be used to recreate the routes. These * are part of an mblk_t chain that hangs off of the IPIF (ipif_saved_ire_mp). */ typedef struct ifrt_s { ushort_t ifrt_type; /* Type of IRE */ in6_addr_t ifrt_v6addr; /* Address IRE represents. */ in6_addr_t ifrt_v6gateway_addr; /* Gateway if IRE_OFFSUBNET */ in6_addr_t ifrt_v6mask; /* Mask for matching IRE. */ uint32_t ifrt_flags; /* flags related to route */ uint_t ifrt_max_frag; /* MTU (next hop or path). */ iulp_t ifrt_iulp_info; /* Cached IRE ULP info. */ } ifrt_t; #define ifrt_addr V4_PART_OF_V6(ifrt_v6addr) #define ifrt_gateway_addr V4_PART_OF_V6(ifrt_v6gateway_addr) #define ifrt_mask V4_PART_OF_V6(ifrt_v6mask) /* Number of IP addresses that can be hosted on a physical interface */ #define MAX_ADDRS_PER_IF 8192 /* * Number of Source addresses to be considered for source address * selection. Used by ipif_select_source[_v6]. */ #define MAX_IPIF_SELECT_SOURCE 50 /* IP interface structure, one per local address */ typedef struct ipif_s { struct ipif_s *ipif_next; struct ill_s *ipif_ill; /* Back pointer to our ill */ int ipif_id; /* Logical unit number */ uint_t ipif_mtu; /* Starts at ipif_ill->ill_max_frag */ in6_addr_t ipif_v6lcl_addr; /* Local IP address for this if. */ in6_addr_t ipif_v6src_addr; /* Source IP address for this if. */ in6_addr_t ipif_v6subnet; /* Subnet prefix for this if. */ in6_addr_t ipif_v6net_mask; /* Net mask for this interface. */ in6_addr_t ipif_v6brd_addr; /* Broadcast addr for this interface. */ in6_addr_t ipif_v6pp_dst_addr; /* Point-to-point dest address. */ uint64_t ipif_flags; /* Interface flags. */ uint_t ipif_metric; /* BSD if metric, for compatibility. */ uint_t ipif_ire_type; /* IRE_LOCAL or IRE_LOOPBACK */ mblk_t *ipif_arp_del_mp; /* Allocated at time arp comes up, to */ /* prevent awkward out of mem */ /* condition later */ mblk_t *ipif_saved_ire_mp; /* Allocated for each extra */ /* IRE_IF_NORESOLVER/IRE_IF_RESOLVER */ /* on this interface so that they */ /* can survive ifconfig down. */ kmutex_t ipif_saved_ire_lock; /* Protects ipif_saved_ire_mp */ /* * The packet counts in the ipif contain the sum of the * packet counts in dead IREs that were affiliated with * this ipif. */ uint_t ipif_fo_pkt_count; /* Forwarded thru our dead IREs */ uint_t ipif_ib_pkt_count; /* Inbound packets for our dead IREs */ uint_t ipif_ob_pkt_count; /* Outbound packets to our dead IREs */ unsigned int ipif_multicast_up : 1, /* We have joined the allhosts group */ ipif_solmcast_up : 1, /* We joined solicited node mcast */ ipif_replace_zero : 1, /* Replacement for zero */ ipif_pad_to_31 : 29; int ipif_orig_ifindex; /* ifindex before SLIFFAILOVER */ uint_t ipif_seqid; /* unique index across all ills */ uint_t ipif_orig_ipifid; /* ipif_id before SLIFFAILOVER */ } ipif_t; /* IPv4 compatability macros */ #define ipif_lcl_addr V4_PART_OF_V6(ipif_v6lcl_addr) #define ipif_src_addr V4_PART_OF_V6(ipif_v6src_addr) #define ipif_subnet V4_PART_OF_V6(ipif_v6subnet) #define ipif_net_mask V4_PART_OF_V6(ipif_v6net_mask) #define ipif_brd_addr V4_PART_OF_V6(ipif_v6brd_addr) #define ipif_pp_dst_addr V4_PART_OF_V6(ipif_v6pp_dst_addr) /* Macros for easy backreferences to the ill. */ #define ipif_wq ipif_ill->ill_wq #define ipif_rq ipif_ill->ill_rq #define ipif_net_type ipif_ill->ill_net_type #define ipif_resolver_mp ipif_ill->ill_resolver_mp #define ipif_ipif_up_count ipif_ill->ill_ipif_up_count #define ipif_bcast_mp ipif_ill->ill_bcast_mp #define ipif_type ipif_ill->ill_type #define ipif_isv6 ipif_ill->ill_isv6 /* * phyint represents state that is common to both IPv4 and IPv6 interfaces. * There is a separate ill_t representing IPv4 and IPv6 which has a * backpointer to the phyint structure for acessing common state. * * NOTE : It just stores the group name as there is only one name for * IPv4 and IPv6 i.e it is a underlying link property. Actually * IPv4 and IPv6 ill are grouped together when their phyints have * the same name. */ typedef struct phyint { struct ill_s *phyint_illv4; struct ill_s *phyint_illv6; uint_t phyint_ifindex; /* SIOCLSLIFINDEX */ uint_t phyint_notify_delay; /* SIOCSLIFNOTIFYDELAY */ char *phyint_groupname; /* SIOCSLIFGROUPNAME */ uint_t phyint_groupname_len; uint64_t phyint_flags; } phyint_t; /* * ILL groups. We group ills, * * - if the ndd_variable ip_enable_group_ifs is enabled and the ills are * in the same subnet.(Old way) * * - if the ills have the same group name. (New way) * * illgrp_lock serializes multiple threads traversing the group * through illgrp_ill_schednext. Used only in illgrp_scheduler. */ typedef struct ill_group { kmutex_t illgrp_lock; struct ill_group *illgrp_next; /* Next ill_group */ struct ill_s *illgrp_ill_schednext; /* Next ill to be scheduled */ struct ill_s *illgrp_ill; /* First ill in the group */ int illgrp_ill_count; } ill_group_t; /* * Fragmentation hash bucket */ typedef struct ipfb_s { struct ipf_s *ipfb_ipf; /* List of ... */ size_t ipfb_count; /* Count of bytes used by frag(s) */ kmutex_t ipfb_lock; /* Protect all ipf in list */ } ipfb_t; /* * IRE bucket structure. Usually there is an array of such structures, * each pointing to a linked list of ires. irb_refcnt counts the number * of walkers of a given hash bucket. Usually the reference count is * bumped up if the walker wants no IRES to be DELETED while walking the * list. Bumping up does not PREVENT ADDITION. This allows walking a given * hash bucket without stumbling up on a free pointer. */ typedef struct irb { struct ire_s *irb_ire; /* First ire in this bucket */ /* Should be first in this struct */ krwlock_t irb_lock; /* Protect this bucket */ uint_t irb_refcnt; /* Protected by irb_lock */ uchar_t irb_marks; /* CONDEMNED ires in this bucket ? */ uint_t irb_ire_cnt; /* Num of IRE in this bucket */ uint_t irb_tmp_ire_cnt; /* Num of temporary IRE */ } irb_t; /* * IP Lower level Structure. * Instance data structure in ip_open when there is a device below us. */ typedef struct ill_s { struct ill_s *ill_next; /* Chained in at ill_g_head. */ struct ill_s **ill_ptpn; /* Pointer to previous next. */ queue_t *ill_rq; /* Read queue. */ queue_t *ill_wq; /* Write queue. */ int ill_error; /* Error value sent up by device. */ ipif_t *ill_ipif; /* Interface chain for this ILL. */ uint_t ill_ipif_up_count; /* Number of IPIFs currently up. */ uint_t ill_max_frag; /* Max IDU from DLPI. */ char *ill_name; /* Our name. */ uint_t ill_name_length; /* Name length, incl. terminator. */ char *ill_ndd_name; /* Name + ":ip_forwarding" for NDD. */ uint_t ill_net_type; /* IRE_IF_RESOLVER/IRE_IF_NORESOLVER. */ uint_t ill_ppa; /* Physical Point of Attachment num. */ t_uscalar_t ill_sap; t_scalar_t ill_sap_length; /* Including sign (for position) */ uint_t ill_phys_addr_length; /* Excluding the sap. */ uint_t ill_bcast_addr_length; /* Only set when the DL provider */ /* supports broadcast. */ t_uscalar_t ill_mactype; uint8_t *ill_frag_ptr; /* Reassembly state. */ timeout_id_t ill_frag_timer_id; /* qtimeout id for the frag timer */ ipfb_t *ill_frag_hash_tbl; /* Fragment hash list head. */ queue_t *ill_pending_q; /* Queue waiting for DL operation */ ipif_t *ill_pending_ipif; /* IPIF waiting for DL operation. */ ilm_t *ill_ilm; /* Multicast mebership for lower ill */ int ill_multicast_type; /* type of router which is querier */ /* on this interface */ int ill_multicast_time; /* # of slow timeouts since last */ /* old query */ /* * All non-NULL cells between 'ill_first_mp_to_free' and * 'ill_last_mp_to_free' are freed in ill_delete. */ #define ill_first_mp_to_free ill_bcast_mp mblk_t *ill_bcast_mp; /* DLPI header for broadcasts. */ mblk_t *ill_pending_mp; /* DL awaiting completion. */ mblk_t *ill_resolver_mp; /* Resolver template. */ mblk_t *ill_down_mp; /* b_next chain prealloced at IFF_UP */ mblk_t *ill_dlunit_req; /* DL_UNITDATA_REQ template, used to */ /* build nce_resmp for IPv6 */ mblk_t *ill_dlpi_deferred; /* b_next chain of control messages */ mblk_t *ill_hw_mp; /* mblk which holds ill_hw_addr */ #define ill_last_mp_to_free ill_hw_mp uint8_t *ill_hw_addr; /* ill_hw_mp->b_rptr + off */ inetcksum_t ill_ick; /* Contains returned ick state */ uint_t ill_close_flags; /* IPCF_* flags for open/close */ uint_t ill_needs_attach : 1, ill_priv_stream : 1, ill_dlpi_pending : 1, /* Wait for ack for DLPI control msg */ ill_isv6 : 1, ill_name_set : 1, ill_dlpi_style_set : 1, ill_forwarding : 1, ill_ifname_pending : 1, /* ipif_set_values wait for M_IOCACK */ ill_move_in_progress : 1, /* FAILOVER/FAILBACK in progress */ ill_join_allmulti : 1, ill_pad_to_bit_31 : 22; /* * Used in SIOCSIFMUXID and SIOCGIFMUXID for 'ifconfig unplumb'. */ int ill_arp_muxid; /* muxid returned from plink for arp */ int ill_ip_muxid; /* muxid returned from plink for ip */ /* * Used for IP frag reassembly throttling on a per ILL basis. * * Note: frag_count is approximate, its added to and subtracted from * without any locking, so simultaneous load/modify/stores can * collide, also ill_frag_purge() recalculates its value by * summing all the ipfb_count's without locking out updates * to the ipfb's. */ uint_t ill_ipf_gen; /* Generation of next fragment queue */ size_t ill_frag_count; /* Approx count of all mblk bytes */ int ill_type; /* From */ uint_t ill_dlpi_multicast_state; /* See below IDMS_* */ uint_t ill_dlpi_fastpath_state; /* See below IDMS_* */ /* * New fields for IPv6 */ uint8_t ill_max_hops; /* Maximum hops for any logical interface */ uint_t ill_max_mtu; /* Maximum MTU for any logical interface */ uint32_t ill_reachable_time; /* Value for ND algorithm in msec */ uint32_t ill_reachable_retrans_time; /* Value for ND algorithm msec */ uint_t ill_max_buf; /* Max # of req to buffer for ND */ in6_addr_t ill_token; uint_t ill_token_length; uint32_t ill_xmit_count; /* ndp max multicast xmits */ mib2_ipv6IfStatsEntry_t *ill_ip6_mib; /* Per interface mib */ mib2_ipv6IfIcmpEntry_t *ill_icmp6_mib; /* Per interface mib */ /* * Following two mblks are allocated common to all * the ipifs when the first interface is coming up. * It is sent up to arp when the last ipif is coming * down. */ mblk_t *ill_arp_down_mp; mblk_t *ill_arp_del_mapping_mp; /* * Used for implementing IFF_NOARP. As IFF_NOARP is used * to turn off for all the logicals, it is here instead * of the ipif. */ mblk_t *ill_arp_on_mp; /* Source of the ill from where the move is being done. */ struct ill_s *ill_being_moved_from; phyint_t *ill_phyint; uint64_t ill_flags; ill_group_t *ill_group; struct ill_s *ill_group_next; /* * Reverse tunnel related count. This count * determines how many mobile nodes are using this * ill to send packet to reverse tunnel via foreign * agent. A non-zero count specifies presence of * mobile node(s) using reverse tunnel through this * interface. */ uint32_t ill_mrtun_refcnt; /* * This count is bumped up when a route is added with * RTA_SRCIFP bit flag using routing socket. */ uint32_t ill_srcif_refcnt; /* * Pointer to the special interface based routing table. * This routing table is created dynamically when RTA_SRCIFP * is set by the routing socket. */ irb_t *ill_srcif_table; } ill_t; #define ILL_CLEAR_MOVE(ill) { \ ill_t *from_ill; \ \ ill->ill_move_in_progress = B_FALSE; \ from_ill = ill->ill_being_moved_from; \ ASSERT(from_ill != NULL); \ from_ill->ill_move_in_progress = B_FALSE; \ ill->ill_being_moved_from = NULL; \ } /* * State for detecting if a driver supports certain features. * Support for DL_ENABMULTI_REQ uses ill_dlpi_multicast_state. * Support for DLPI M_DATA fastpath uses ill_dlpi_fastpath_state. */ #define IDMS_UNKNOWN 0 /* No DL_ENABMULTI_REQ sent */ #define IDMS_INPROGRESS 1 /* Sent DL_ENABMULTI_REQ */ #define IDMS_OK 2 /* DL_ENABMULTI_REQ ok */ #define IDMS_FAILED 3 /* DL_ENABMULTI_REQ failed */ /* Named Dispatch Parameter Management Structure */ typedef struct ipparam_s { uint_t ip_param_min; uint_t ip_param_max; uint_t ip_param_value; char *ip_param_name; } ipparam_t; /* * Following are the macros to increment/decrement the reference * count of the IREs and IRBs (ire bucket). * * 1) We bump up the reference count of an IRE to make sure that * it does not get deleted and freed while we are using it. * Typically all the lookup functions hold the bucket lock, * and look for the IRE. If it finds an IRE, it bumps up the * reference count before dropping the lock. Sometimes we *may* want * to bump up the reference count after we *looked* up i.e without * holding the bucket lock. So, the IRE_REFHOLD macro does not assert * on the bucket lock being held. Any thread trying to delete from * the hash bucket can still do so but cannot free the IRE if * ire_refcnt is not 0. * * 2) We bump up the reference count on the bucket where the IRE resides * (IRB), when we want to prevent the IREs getting deleted from a given * hash bucket. This makes life easier for ire_walk type functions which * wants to walk the IRE list, call a function, but needs to drop * the bucket lock to prevent recursive rw_enters. While the * lock is dropped, the list could be changed by other threads or * the same thread could end up deleting the ire or the ire pointed by * ire_next. IRE_REFHOLDing the ire or ire_next is not sufficient as * a delete will still remove the ire from the bucket while we have * dropped the lock and hence the ire_next would be NULL. Thus, we * need a mechanism to prevent deletions from a given bucket. * * To prevent deletions, we bump up the reference count on the * bucket. If the bucket is held, ire_delete just marks IRE_MARK_CONDEMNED * both on the ire's ire_marks and the bucket's irb_marks. When the * reference count on the bucket drops to zero, all the CONDEMNED ires * are deleted. We don't have to bump up the reference count on the * bucket if we are walking the bucket and never have to drop the bucket * lock. Note that IRB_REFHOLD does not prevent addition of new ires * in the list. It is okay because addition of new ires will not cause * ire_next to point to freed memory. We do IRB_REFHOLD only when * all of the 3 conditions are true : * * 1) The code needs to walk the IRE bucket from start to end. * 2) It may have to drop the bucket lock sometimes while doing (1) * 3) It does not want any ires to be deleted meanwhile. */ /* * Bump up the reference count on the IRE. We cannot assert that the * bucket lock is being held as it is legal to bump up the reference * count after the first lookup has returned the IRE without * holding the lock. Currently ip_wput does this for caching IRE_CACHEs. */ #define IRE_REFHOLD(ire) { \ atomic_add_32(&(ire)->ire_refcnt, 1); \ ASSERT((ire)->ire_refcnt != 0); \ } /* * Decrement the reference count on the IRE. * In architectures e.g sun4u, where atomic_add_32_nv is just * a cas, we need to maintain the right memory barrier semantics * as that of mutex_exit i.e all the loads and stores should complete * before the cas is executed. membar_exit() does that here. * * NOTE : This macro is used only in places where we want performance. * To avoid bloating the code, we use the function "ire_refrele" * which essentially calls the macro. */ #define IRE_REFRELE(ire) { \ ASSERT((ire)->ire_refcnt != 0); \ membar_exit(); \ if (atomic_add_32_nv(&(ire)->ire_refcnt, -1) == 0) \ ire_inactive(ire); \ } /* * Bump up the reference count on the hash bucket - IRB to * prevent ires from being deleted in this bucket. */ #define IRB_REFHOLD(irb) { \ rw_enter(&(irb)->irb_lock, RW_WRITER); \ (irb)->irb_refcnt++; \ ASSERT((irb)->irb_refcnt != 0); \ rw_exit(&(irb)->irb_lock); \ } #define IRB_REFRELE(irb) { \ rw_enter(&(irb)->irb_lock, RW_WRITER); \ ASSERT((irb)->irb_refcnt != 0); \ if (--(irb)->irb_refcnt == 0 && \ ((irb)->irb_marks & IRE_MARK_CONDEMNED)) { \ ire_t *ire_list; \ \ ire_list = ire_unlink(irb); \ rw_exit(&(irb)->irb_lock); \ ASSERT(ire_list != NULL); \ ire_cleanup(ire_list); \ } else { \ rw_exit(&(irb)->irb_lock); \ } \ } typedef struct ire4 { ipaddr_t ire4_src_addr; /* Source address to use. */ ipaddr_t ire4_mask; /* Mask for matching this IRE. */ ipaddr_t ire4_addr; /* Address this IRE represents. */ ipaddr_t ire4_gateway_addr; /* Gateway if IRE_CACHE/IRE_OFFSUBNET */ ipaddr_t ire4_cmask; /* Mask from parent prefix route */ } ire4_t; typedef struct ire6 { in6_addr_t ire6_src_addr; /* Source address to use. */ in6_addr_t ire6_mask; /* Mask for matching this IRE. */ in6_addr_t ire6_addr; /* Address this IRE represents. */ in6_addr_t ire6_gateway_addr; /* Gateway if IRE_CACHE/IRE_OFFSUBNET */ in6_addr_t ire6_cmask; /* Mask from parent prefix route */ } ire6_t; typedef union ire_addr { ire6_t ire6_u; ire4_t ire4_u; } ire_addr_u_t; /* Internet Routing Entry */ typedef struct ire_s { struct ire_s *ire_next; /* The hash chain must be first. */ struct ire_s **ire_ptpn; /* Pointer to previous next. */ uint32_t ire_refcnt; /* Number of references */ mblk_t *ire_mp; /* Non-null if allocated as mblk */ mblk_t *ire_fp_mp; /* Fast path header */ queue_t *ire_rfq; /* recv from this queue */ queue_t *ire_stq; /* send to this queue */ uint_t ire_max_frag; /* MTU (next hop or path). */ uint32_t ire_frag_flag; /* IPH_DF or zero. */ uint32_t ire_ident; /* Per IRE IP ident. */ uint32_t ire_tire_mark; /* Used for reclaim of unused. */ uchar_t ire_ipversion; /* IPv4/IPv6 version */ uchar_t ire_marks; /* IRE_MARK_CONDEMNED etc. */ ushort_t ire_type; /* Type of IRE */ uint_t ire_ib_pkt_count; /* Inbound packets for ire_addr */ uint_t ire_ob_pkt_count; /* Outbound packets to ire_addr */ uint_t ire_ll_hdr_length; /* Non-zero if we do M_DATA prepends */ time_t ire_create_time; /* Time (in secs) IRE was created. */ mblk_t *ire_dlureq_mp; /* DL_UNIT_DATA_REQ/RESOLVER mp */ uint32_t ire_phandle; /* Associate prefix IREs to cache */ uint32_t ire_ihandle; /* Associate interface IREs to cache */ ipif_t *ire_ipif; /* the interface that this ire uses */ uint32_t ire_flags; /* flags related to route (RTF_*) */ uint_t ire_ipsec_options_size; /* IPSEC options size */ struct nce_s *ire_nce; /* Neighbor Cache Entry for IPv6 */ uint_t ire_masklen; /* # bits in ire_mask{,_v6} */ ire_addr_u_t ire_u; /* IPv4/IPv6 address info. */ irb_t *ire_bucket; /* Hash bucket when ire_ptphn is set */ iulp_t ire_uinfo; /* Upper layer protocol info. */ /* * Protects ire_uinfo, ire_max_frag, and ire_frag_flag. */ kmutex_t ire_lock; uint_t ire_ipif_seqid; /* ipif_seqid of ire_ipif */ /* * For regular routes in forwarding table and cache table the * the following entries are NULL/zero. Only reverse tunnel * table and interface based forwarding table use these fields. * Routes added with RTA_SRCIFP and RTA_SRC respectively have * non-zero values for the following fields. */ ill_t *ire_in_ill; /* Incoming ill interface */ ipaddr_t ire_in_src_addr; /* source ip-addr of incoming packet */ clock_t ire_last_used_time; /* Last used time */ } ire_t; /* IPv4 compatiblity macros */ #define ire_src_addr ire_u.ire4_u.ire4_src_addr #define ire_mask ire_u.ire4_u.ire4_mask #define ire_addr ire_u.ire4_u.ire4_addr #define ire_gateway_addr ire_u.ire4_u.ire4_gateway_addr #define ire_cmask ire_u.ire4_u.ire4_cmask #define ire_src_addr_v6 ire_u.ire6_u.ire6_src_addr #define ire_mask_v6 ire_u.ire6_u.ire6_mask #define ire_addr_v6 ire_u.ire6_u.ire6_addr #define ire_gateway_addr_v6 ire_u.ire6_u.ire6_gateway_addr #define ire_cmask_v6 ire_u.ire6_u.ire6_cmask /* Convenient typedefs for sockaddrs */ typedef struct sockaddr_in sin_t; typedef struct sockaddr_in6 sin6_t; /* Address structure used for internal bind with IP */ typedef struct ipa_conn_s { ipaddr_t ac_laddr; ipaddr_t ac_faddr; uint16_t ac_fport; uint16_t ac_lport; } ipa_conn_t; typedef struct ipa6_conn_s { in6_addr_t ac6_laddr; in6_addr_t ac6_faddr; uint16_t ac6_fport; uint16_t ac6_lport; } ipa6_conn_t; /* Name/Value Descriptor. */ typedef struct nv_s { uint64_t nv_value; char *nv_name; } nv_t; /* IP Forwarding Ticket */ typedef struct ipftk_s { queue_t *ipftk_queue; ipaddr_t ipftk_dst; } ipftk_t; typedef struct ipt_s { pfv_t func; /* Routine to call */ uchar_t *arg; /* ire or nce passed in */ } ipt_t; #define ILL_FRAG_HASH(s, i) \ ((ntohl(s) ^ ((i) ^ ((i) >> 8))) % ILL_FRAG_HASH_TBL_COUNT) /* * Per-packet information for received packets and transmitted. * Used by the transport protocols when converting between the packet * and ancillary data and socket options. * * Note: This private data structure and related IPPF_* constant * definitions are exposed to enable compilation of some debugging tools * like lsof which use struct tcp_t in . This is intended to be * a temporary hack and long term alternate interfaces should be defined * to support the needs of such tools and private definitions moved to * private headers. */ struct ip6_pkt_s { uint_t ipp_fields; /* Which fields are valid */ uint_t ipp_ifindex; /* pktinfo ifindex */ in6_addr_t ipp_addr; /* pktinfo src/dst addr */ uint_t ipp_hoplimit; uint_t ipp_hopoptslen; uint_t ipp_rtdstoptslen; uint_t ipp_rthdrlen; uint_t ipp_dstoptslen; ip6_hbh_t *ipp_hopopts; ip6_dest_t *ipp_rtdstopts; ip6_rthdr_t *ipp_rthdr; ip6_dest_t *ipp_dstopts; in6_addr_t ipp_nexthop; /* Transmit only */ }; typedef struct ip6_pkt_s ip6_pkt_t; /* * This structure is used to convey information from IP and the ULP. * Currently used for the IP_RECVSLLA and IP_RECVIF options. The * type of information field is set to IN_PKTINFO (i.e inbound pkt info) */ typedef struct in_pktinfo { uint32_t in_pkt_ulp_type; /* type of info sent */ /* to UDP */ uint32_t in_pkt_flags; /* what is sent up by IP */ uint32_t in_pkt_ifindex; /* inbound interface index */ struct sockaddr_dl in_pkt_slla; /* has source link layer addr */ } in_pktinfo_t; /* * flags to tell UDP what IP is sending */ #define IPF_RECVIF 0x01 /* inbound interface index */ #define IPF_RECVSLLA 0x02 /* source link layer address */ /* ipp_fields values */ #define IPPF_IFINDEX 0x0001 /* Part of in6_pktinfo: ifindex */ #define IPPF_ADDR 0x0002 /* Part of in6_pktinfo: src/dst addr */ #define IPPF_SCOPE_ID 0x0004 /* Add xmit ip6i_t for sin6_scope_id */ #define IPPF_NO_CKSUM 0x0008 /* Add xmit ip6i_t for IP6I_NO_*_CKSUM */ #define IPPF_RAW_CKSUM 0x0010 /* Add xmit ip6i_t for IP6I_RAW_CHECKSUM */ #define IPPF_HOPLIMIT 0x0020 #define IPPF_HOPOPTS 0x0040 #define IPPF_RTHDR 0x0080 #define IPPF_RTDSTOPTS 0x0100 #define IPPF_DSTOPTS 0x0200 #define IPPF_NEXTHOP 0x0400 #define IPPF_HAS_IP6I \ (IPPF_IFINDEX|IPPF_ADDR|IPPF_NEXTHOP|IPPF_SCOPE_ID| \ IPPF_NO_CKSUM|IPPF_RAW_CKSUM) #define TCP_PORTS_OFFSET 0 #define UDP_PORTS_OFFSET 0 /* * Note: TCP, UDP and "proto" have separate fanout tables for IPv6. * IP_TCP_CONN_HASH_SIZE must be a multiple of 2. */ #define IP_TCP_CONN_HASH_SIZE 512 extern uint_t ipc_tcp_conn_hash_size; #define IP_TCP_CONN_HASH(ip_src, ports) \ ((unsigned)(ntohl(ip_src) ^ (ports >> 24) ^ (ports >> 16) \ ^ (ports >> 8) ^ ports) & (ipc_tcp_conn_hash_size - 1)) #define IP_TCP_LISTEN_HASH(lport) \ ((unsigned)(((lport) >> 8) ^ (lport)) % A_CNT(ipc_tcp_listen_fanout)) /* * Assumes that the caller passes in as the uint32_t * parameter "ports". */ #define IP_TCP_CONN_MATCH(ipc, ipha, ports) \ ((ipc)->ipc_ports == (ports) && \ (ipc)->ipc_faddr == (ipha)->ipha_src && \ (ipc)->ipc_laddr == (ipha)->ipha_dst) #define IP_TCP_LISTEN_MATCH(ipc, lport, laddr) \ (((ipc)->ipc_lport == (lport)) && \ (((ipc)->ipc_laddr == 0) || \ ((ipc)->ipc_laddr == (laddr)))) /* * Does not check ipc_wantpacket. Caller must do that separately for * multicast packets. * * If ipc_faddr is non-zero check for a connected UDP socket. * This depends on the order of insertion in ip_bind() to ensure that * the most specific matches are first. Thus the insertion order in * the fanout buckets must be: * 1) Fully connected UDP sockets * 2) Bound to a local IP address * 3) Bound to INADDR_ANY */ #define IP_UDP_MATCH(ipc, lport, laddr, fport, faddr) \ (((ipc)->ipc_lport == (lport)) && \ (((ipc)->ipc_laddr == 0) || \ (((ipc)->ipc_laddr == (laddr)) && \ (((ipc)->ipc_faddr == 0) || \ ((ipc)->ipc_faddr == (faddr) && (ipc)->ipc_fport == (fport)))))) /* * Checks ipc_wantpacket for multicast. * * ip_fanout_proto() needs to check just the IPv4 fanout. * This depends on the order of insertion in ip_bind() to ensure * that the most specific matches are first. Thus the insertion order * in the fanout buckets must be: * 1) Fully specified ICMP connection (source and dest) * 2) Bound to a local IP address * 3) Bound to INADDR_ANY */ #define IP_PROTO_MATCH(ipc, protocol, laddr, faddr) \ ((((ipc)->ipc_laddr == 0) || \ (((ipc)->ipc_laddr == (laddr)) && \ (((ipc)->ipc_faddr == 0) || \ ((ipc)->ipc_faddr == (faddr))))) && \ (ipc_wantpacket(ipc, ill, laddr) || \ (protocol == IPPROTO_PIM) || (protocol == IPPROTO_RSVP))) extern struct ill_s *ill_g_head; /* ILL List Head */ extern ill_t *ip_timer_ill; /* ILL for IRE expiration timer. */ extern timeout_id_t ip_ire_expire_id; /* IRE expiration timeout id. */ extern timeout_id_t ip_ire_reclaim_id; /* IRE recalaim timeout id. */ extern ill_t *ill_ire_gc; /* ILL used for ire memory reclaim */ extern time_t ip_ire_time_elapsed; /* Time since IRE cache last flushed */ extern kmutex_t ip_mi_lock; /* * The following are the variables for IGMP and MLD timers * Both timers work in a similar fashion. At system * initialization a single igmp_timer_ill is created for the * very first IPv4 ill. If the ill is then removed, the mp * is simply repointed to another IPv4 ill. IP uses mi_timer * function to send a "times up" notification (using * igmp_timer_mp) in igmp_timer_interval milliseconds to * ip_wsrv function. The calculation of the * igmp_timer_interval variable is done by the macro * IGMP_TIMEOUT_INTERVAL. Note that this macro is needed * for igmp to convert the Max Response time units of a * tenth of a second (as specified by the IGMPv2 spec) to * milliseconds. This interval variable is not required for * MLD since the spec specifies Max Response Delay time in * milliseconds. The ip_wsrv then calls igmp_timeout function * to process the notification, by calling igmp_timeout_handler * routine */ extern ill_t *igmp_timer_ill; /* ILL for IGMP timer. */ extern mblk_t *igmp_timer_mp; /* IGMP timer */ extern int igmp_timer_interval; extern ill_t *mld_timer_ill; /* ILL for MLD timer. */ extern mblk_t *mld_timer_mp; /* MLD timer */ extern struct kmem_cache *ire_cache; extern uint_t ip_ire_default_count; /* Number of IPv4 IRE_DEFAULT entries */ extern uint_t ip_ire_default_index; /* Walking index used to mod in */ extern ill_t *proxy_frag_ill; /* ILL for frags to proxies. */ extern ipaddr_t ip_g_all_ones; extern caddr_t ip_g_nd; /* Named Dispatch List Head */ extern int ip_max_mtu; /* Used by udp/icmp */ extern ipparam_t *ip_param_arr; extern int ip_g_forward; #define ip_respond_to_address_mask_broadcast ip_param_arr[0].ip_param_value #define ip_g_resp_to_address_mask ip_param_arr[0].ip_param_value #define ip_g_send_redirects ip_param_arr[4].ip_param_value #define ip_debug ip_param_arr[6].ip_param_value #define ip_mrtdebug ip_param_arr[7].ip_param_value #define ip_timer_interval ip_param_arr[8].ip_param_value #define ip_ire_arp_interval ip_param_arr[9].ip_param_value #define ip_def_ttl ip_param_arr[11].ip_param_value #define ip_wroff_extra ip_param_arr[13].ip_param_value #define ip_path_mtu_discovery ip_param_arr[16].ip_param_value #define ip_ignore_delete_time ip_param_arr[17].ip_param_value #define ip_output_queue ip_param_arr[19].ip_param_value #define ip_broadcast_ttl ip_param_arr[20].ip_param_value #define ip_icmp_err_interval ip_param_arr[21].ip_param_value #define ip_icmp_err_burst ip_param_arr[22].ip_param_value #define ip_reass_queue_bytes ip_param_arr[23].ip_param_value #define ip_addrs_per_if ip_param_arr[25].ip_param_value #define delay_first_probe_time ip_param_arr[29].ip_param_value #define max_unicast_solicit ip_param_arr[30].ip_param_value #define ipv6_def_hops ip_param_arr[31].ip_param_value #define ipv6_icmp_return ip_param_arr[32].ip_param_value #define ipv6_forward ip_param_arr[33].ip_param_value #define ipv6_forward_src_routed ip_param_arr[34].ip_param_value #define ipv6_resp_echo_mcast ip_param_arr[35].ip_param_value #define ipv6_send_redirects ip_param_arr[36].ip_param_value #define ipv6_ignore_redirect ip_param_arr[37].ip_param_value #define ipv6_strict_dst_multihoming ip_param_arr[38].ip_param_value #define ip_ire_reclaim_fraction ip_param_arr[39].ip_param_value #define ipsec_policy_log_interval ip_param_arr[40].ip_param_value #define ip_ndp_unsolicit_interval ip_param_arr[42].ip_param_value #define ip_ndp_unsolicit_count ip_param_arr[43].ip_param_value #ifdef DEBUG #define ipv6_drop_inbound_icmpv6 ip_param_arr[44].ip_param_value #else #define ipv6_drop_inbound_icmpv6 0 #endif extern int ip_enable_group_ifs; extern hrtime_t ipsec_policy_failure_last; extern int dohwcksum; /* use h/w cksum if supported by the h/w */ #ifdef ZC_TEST extern int noswcksum; #endif extern uint_t ipif_g_count; /* Count of IPIFs "up". */ extern char ipif_loopback_name[]; extern nv_t *ire_nv_tbl; extern time_t ip_g_frag_timeout; extern clock_t ip_g_frag_timo_ms; extern mib2_ip_t ip_mib; /* For tcpInErrs and udpNoPorts */ extern struct module_info ip_mod_info; extern timeout_id_t igmp_slowtimeout_id; extern icf_t rts_clients; extern uint_t loopback_packets; /* * Network byte order macros */ #ifdef _BIG_ENDIAN #define N_IN_CLASSD_NET IN_CLASSD_NET #define N_INADDR_UNSPEC_GROUP INADDR_UNSPEC_GROUP #else /* _BIG_ENDIAN */ #define N_IN_CLASSD_NET (ipaddr_t)0x000000f0U #define N_INADDR_UNSPEC_GROUP (ipaddr_t)0x000000e0U #endif /* _BIG_ENDIAN */ #define CLASSD(addr) (((addr) & N_IN_CLASSD_NET) == N_INADDR_UNSPEC_GROUP) #ifdef IP_DEBUG #include #include #define ip0dbg(a) printf a #define ip1dbg(a) if (ip_debug > 2) printf a #define ip2dbg(a) if (ip_debug > 3) printf a #define ip3dbg(a) if (ip_debug > 4) printf a #define ipcsumdbg(a, b) \ if (ip_debug == 1) \ prom_printf(a); \ else if (ip_debug > 1) \ { prom_printf("mp=%p\n", (void *)b); debug_enter(a); } #else #define ip0dbg(a) /* */ #define ip1dbg(a) /* */ #define ip2dbg(a) /* */ #define ip3dbg(a) /* */ #define ipcsumdbg(a, b) /* */ #endif /* IP_DEBUG */ extern char *dlpi_prim_str(int); extern void ill_frag_timer(void *); extern mblk_t *ip_carve_mp(mblk_t **, ssize_t); extern mblk_t *ip_dlpi_alloc(size_t, t_uscalar_t); extern char *ip_dot_addr(ipaddr_t, char *); extern mblk_t *ip_timer_alloc(pfv_t, uchar_t *, int); extern boolean_t icmp_err_rate_limit(void); extern void icmp_time_exceeded(queue_t *, mblk_t *, uint8_t); extern void icmp_unreachable(queue_t *, mblk_t *, uint8_t); extern int ip_bind_connected(ipc_t *, mblk_t *, ipaddr_t, uint16_t, ipaddr_t, uint16_t, boolean_t, boolean_t, boolean_t); extern int ip_bind_laddr(ipc_t *, mblk_t *, ipaddr_t, uint16_t, boolean_t, boolean_t, boolean_t); extern uint_t ip_cksum(mblk_t *, int, uint32_t); extern int ip_close(queue_t *); extern uint16_t ip_csum_hdr(ipha_t *); extern void ip_fanout_tcp_defq(queue_t *, mblk_t *, uint_t, boolean_t); extern int ip_hdr_complete(ipha_t *); extern int ip_ipc_report(queue_t *, mblk_t *, void *); extern void ip_ire_fini(void); extern void ip_ire_init(void); extern int ip_open(queue_t *, dev_t *, int, int, cred_t *); extern boolean_t ip_reassemble(mblk_t *, ipf_t *, uint_t, boolean_t, uint_t, ill_t *); extern void ip_rput(queue_t *, mblk_t *); extern void ip_rput(queue_t *, mblk_t *); extern void ip_rput_dlpi(queue_t *, mblk_t *); extern void ip_rput_forward(ire_t *, ipha_t *, mblk_t *); extern void ip_rput_forward(ire_t *, ipha_t *, mblk_t *); extern void ip_rput_forward_multicast(ipaddr_t, mblk_t *, ipif_t *); extern void ip_rput_local(queue_t *, mblk_t *, ipha_t *, ire_t *, uint_t); extern void ip_rput_other(queue_t *, mblk_t *); extern void ip_rsrv(queue_t *); extern void ip_setqinfo(queue_t *, boolean_t, boolean_t); extern void ip_trash_ire_reclaim(void *); extern void ip_trash_timer_expire(void *); extern void ip_wput(queue_t *, mblk_t *); extern void ip_wput_ire(queue_t *, mblk_t *, ire_t *, ipc_t *); extern void ip_wput_local(queue_t *, ill_t *, ipha_t *, mblk_t *, int); extern void ip_wput_multicast(queue_t *, mblk_t *, ipif_t *); extern void ip_wput_nondata(queue_t *, mblk_t *); extern void ip_wsrv(queue_t *); extern void ipc_hash_insert_bound(icf_t *, ipc_t *); extern void ipc_hash_insert_connected(icf_t *, ipc_t *); extern void ipc_hash_insert_wildcard(icf_t *, ipc_t *); extern void ipc_walk(pfv_t, void *); extern char *ip_nv_lookup(nv_t *, int); extern boolean_t ip_local_addr_ok_v6(const in6_addr_t *, const in6_addr_t *); extern boolean_t ip_remote_addr_ok_v6(const in6_addr_t *, const in6_addr_t *); extern ipaddr_t ip_massage_options(ipha_t *); extern ipaddr_t ip_net_mask(ipaddr_t); extern struct qinit rinit_ipv6; extern struct qinit rinit_ipv6_ipc; extern struct qinit winit_ipv6; extern int ipc_ipsec_length(ipc_t *ipc); extern void ip_wput_ipsec_out(queue_t *, mblk_t *); extern ipaddr_t ip_get_dst(ipha_t *); extern boolean_t ipsec_check_global_policy(mblk_t *, ipc_t *); extern mblk_t *ipsec_in_alloc(); extern mblk_t *ipsec_in_to_out(mblk_t *); extern boolean_t ipsec_inbound_accept_clear(mblk_t *); extern boolean_t ipsec_in_is_secure(mblk_t *); extern boolean_t ipsec_check_ipsecin_policy(char *, queue_t *, mblk_t *, ipsec_req_t *); extern void ipsec_log_policy_failure(queue_t *, int, char *, ipha_t *, boolean_t); extern void ire_cleanup(ire_t *); extern void ire_inactive(ire_t *); extern ire_t *ire_unlink(irb_t *); extern int ip_srcid_insert(const in6_addr_t *); extern int ip_srcid_remove(const in6_addr_t *); extern void ip_srcid_find_id(uint_t, in6_addr_t *); extern uint_t ip_srcid_find_addr(const in6_addr_t *); extern int ip_srcid_report(queue_t *, mblk_t *, void *); #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _INET_IP_H */