#define AUTHSIZE(sav) ((sav->flags & SADB_X_EXT_OLD) ? 16 : \
xform_ah_authsize((sav)->tdb_authalgxform))
VNET_DEFINE(int, ah_enable) = 1; /* control flow of packets with AH */
VNET_DEFINE(int, ah_cleartos) = 1; /* clear ip_tos when doing AH calc */
VNET_PCPUSTAT_DEFINE(struct ahstat, ahstat);
VNET_PCPUSTAT_SYSINIT(ahstat);
#ifdef VIMAGE
VNET_PCPUSTAT_SYSUNINIT(ahstat);
#endif /* VIMAGE */
#ifdef INET
SYSCTL_DECL(_net_inet_ah);
SYSCTL_INT(_net_inet_ah, OID_AUTO, ah_enable,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ah_enable), 0, "");
SYSCTL_INT(_net_inet_ah, OID_AUTO, ah_cleartos,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ah_cleartos), 0, "");
SYSCTL_VNET_PCPUSTAT(_net_inet_ah, IPSECCTL_STATS, stats, struct ahstat,
ahstat, "AH statistics (struct ahstat, netipsec/ah_var.h)");
#endif
static unsigned char ipseczeroes[256]; /* larger than an ip6 extension hdr */
static int ah_input_cb(struct cryptop*);
static int ah_output_cb(struct cryptop*);
int
xform_ah_authsize(const struct auth_hash *esph)
{
int alen;
/*
* UDP and UDP-Lite protocols implementation.
* Per RFC 768, August, 1980.
* Per RFC 3828, July, 2004.
*/
/*
* BSD 4.2 defaulted the udp checksum to be off. Turning off udp checksums
* removes the only data integrity mechanism for packets and malformed
* packets that would otherwise be discarded due to bad checksums, and may
* cause problems (especially for NFS data blocks).
*/
VNET_DEFINE(int, udp_cksum) = 1;
SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(udp_cksum), 0, "compute udp checksum");
int udp_log_in_vain = 0;
SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
&udp_log_in_vain, 0, "Log all incoming UDP packets");
VNET_DEFINE(int, udp_blackhole) = 0;
SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(udp_blackhole), 0,
"Do not send port unreachables for refused connects");
u_long udp_sendspace = 9216; /* really max datagram size */
SYSCTL_ULONG(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
&udp_sendspace, 0, "Maximum outgoing UDP datagram size");
u_long udp_recvspace = 40 * (1024 +
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_GRE,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = gre_input10,
.pr_output = (pr_output_t *)rip_output,
.pr_ctlinput = rip_ctlinput,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs
};
#define GRE_TTL 30
VNET_DEFINE(int, ip_gre_ttl) = GRE_TTL;
#define V_ip_gre_ttl VNET(ip_gre_ttl)
SYSCTL_VNET_INT(_net_inet_ip, OID_AUTO, grettl, CTLFLAG_RW,
&VNET_NAME(ip_gre_ttl), 0, "");
static void
gre_input10(struct mbuf *m, int off)
{
int proto;
proto = (mtod(m, struct ip *))->ip_p;
gre_input(&m, &off, proto);
}
static int
in_gre_encapcheck(const struct mbuf *m, int off, int proto, void *arg)
{
GRE_RLOCK_TRACKER;
struct gre_softc *sc;
#include <netipsec/key.h>
#endif /*IPSEC*/
extern struct protosw inetsw[];
#ifdef IPSEC
#ifdef IPSEC_FILTERTUNNEL
static VNET_DEFINE(int, ip4_ipsec_filtertunnel) = 1;
#else
static VNET_DEFINE(int, ip4_ipsec_filtertunnel) = 0;
#endif
#define V_ip4_ipsec_filtertunnel VNET(ip4_ipsec_filtertunnel)
SYSCTL_DECL(_net_inet_ipsec);
SYSCTL_VNET_INT(_net_inet_ipsec, OID_AUTO, filtertunnel,
CTLFLAG_RW, &VNET_NAME(ip4_ipsec_filtertunnel), 0,
"If set filter packets from an IPsec tunnel.");
#endif /* IPSEC */
/*
* Check if we have to jump over firewall processing for this packet.
* Called from ip_input().
* 1 = jump over firewall, 0 = packet goes through firewall.
*/
int
ip_ipsec_filtertunnel(struct mbuf *m)
{
#ifdef IPSEC
/*
* Bypass packet filtering for packets previously handled by IPsec.
/*
* This macro controls the default upper limitation on nesting of gif tunnels.
* Since, setting a large value to this macro with a careless configuration
* may introduce system crash, we don't allow any nestings by default.
* If you need to configure nested gif tunnels, you can define this macro
* in your kernel configuration file. However, if you do so, please be
* careful to configure the tunnels so that it won't make a loop.
*/
#define MAX_GIF_NEST 1
#endif
static VNET_DEFINE(int, max_gif_nesting) = MAX_GIF_NEST;
#define V_max_gif_nesting VNET(max_gif_nesting)
SYSCTL_VNET_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_RW,
&VNET_NAME(max_gif_nesting), 0, "Max nested tunnels");
#ifdef INET6
SYSCTL_DECL(_net_inet6_ip6);
SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM, gifhlim, CTLFLAG_RW,
&VNET_NAME(ip6_gif_hlim), 0, "");
#endif
/*
* By default, we disallow creation of multiple tunnels between the same
* pair of addresses. Some applications require this functionality so
* we allow control over this check here.
*/
#ifdef XBONEHACK
static VNET_DEFINE(int, parallel_tunnels) = 1;
#else
"Generic Tunnel Interface");
#ifndef MAX_GIF_NEST
/*
* This macro controls the default upper limitation on nesting of gif tunnels.
* Since, setting a large value to this macro with a careless configuration
* may introduce system crash, we don't allow any nestings by default.
* If you need to configure nested gif tunnels, you can define this macro
* in your kernel configuration file. However, if you do so, please be
* careful to configure the tunnels so that it won't make a loop.
*/
#define MAX_GIF_NEST 1
#endif
static VNET_DEFINE(int, max_gif_nesting) = MAX_GIF_NEST;
#define V_max_gif_nesting VNET(max_gif_nesting)
SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(max_gif_nesting), 0, "Max nested tunnels");
/*
* By default, we disallow creation of multiple tunnels between the same
* pair of addresses. Some applications require this functionality so
* we allow control over this check here.
*/
#ifdef XBONEHACK
static VNET_DEFINE(int, parallel_tunnels) = 1;
#else
static VNET_DEFINE(int, parallel_tunnels) = 0;
#endif
#define V_parallel_tunnels VNET(parallel_tunnels)
SYSCTL_INT(_net_link_gif, OID_AUTO, parallel_tunnels,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(parallel_tunnels), 0,
"Allow parallel tunnels?");
* outer IP header.
*/
static VNET_DEFINE(int, filter_mask_in) = IPSEC_ENC_BEFORE;
static VNET_DEFINE(int, bpf_mask_in) = IPSEC_ENC_BEFORE;
static VNET_DEFINE(int, filter_mask_out) = IPSEC_ENC_BEFORE;
static VNET_DEFINE(int, bpf_mask_out) = IPSEC_ENC_BEFORE | IPSEC_ENC_AFTER;
#define V_filter_mask_in VNET(filter_mask_in)
#define V_bpf_mask_in VNET(bpf_mask_in)
#define V_filter_mask_out VNET(filter_mask_out)
#define V_bpf_mask_out VNET(bpf_mask_out)
static SYSCTL_NODE(_net, OID_AUTO, enc, CTLFLAG_RW, 0, "enc sysctl");
static SYSCTL_NODE(_net_enc, OID_AUTO, in, CTLFLAG_RW, 0, "enc input sysctl");
static SYSCTL_NODE(_net_enc, OID_AUTO, out, CTLFLAG_RW, 0, "enc output sysctl");
SYSCTL_INT(_net_enc_in, OID_AUTO, ipsec_filter_mask,
CTLFLAG_RW | CTLFLAG_VNET, &VNET_NAME(filter_mask_in), 0,
"IPsec input firewall filter mask");
SYSCTL_INT(_net_enc_in, OID_AUTO, ipsec_bpf_mask,
CTLFLAG_RW | CTLFLAG_VNET, &VNET_NAME(bpf_mask_in), 0,
"IPsec input bpf mask");
SYSCTL_INT(_net_enc_out, OID_AUTO, ipsec_filter_mask,
CTLFLAG_RW | CTLFLAG_VNET, &VNET_NAME(filter_mask_out), 0,
"IPsec output firewall filter mask");
SYSCTL_INT(_net_enc_out, OID_AUTO, ipsec_bpf_mask,
CTLFLAG_RW | CTLFLAG_VNET, &VNET_NAME(bpf_mask_out), 0,
"IPsec output bpf mask");
static void
enc_clone_destroy(struct ifnet *ifp)
{
struct enc_softc *sc;
#include <netinet/in.h>
#include <netinet/in_fib.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/ip_var.h>
#include <netinet/ip_options.h>
#include <netinet/ip_icmp.h>
#include <machine/in_cksum.h>
#include <sys/socketvar.h>
static VNET_DEFINE(int, ip_dosourceroute);
SYSCTL_INT(_net_inet_ip, IPCTL_SOURCEROUTE, sourceroute,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip_dosourceroute), 0,
"Enable forwarding source routed IP packets");
#define V_ip_dosourceroute VNET(ip_dosourceroute)
static VNET_DEFINE(int, ip_acceptsourceroute);
SYSCTL_INT(_net_inet_ip, IPCTL_ACCEPTSOURCEROUTE, accept_sourceroute,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip_acceptsourceroute), 0,
"Enable accepting source routed IP packets");
#define V_ip_acceptsourceroute VNET(ip_acceptsourceroute)
VNET_DEFINE(int, ip_doopts) = 1; /* 0 = ignore, 1 = process, 2 = reject */
SYSCTL_INT(_net_inet_ip, OID_AUTO, process_options, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(ip_doopts), 0, "Enable IP options processing ([LS]SRR, RR, TS)");
static void save_rte(struct mbuf *m, u_char *, struct in_addr);
u_int rt_numfibs = RT_NUMFIBS;
SYSCTL_UINT(_net, OID_AUTO, fibs, CTLFLAG_RDTUN, &rt_numfibs, 0, "");
/*
* By default add routes to all fibs for new interfaces.
* Once this is set to 0 then only allocate routes on interface
* changes for the FIB of the caller when adding a new set of addresses
* to an interface. XXX this is a shotgun aproach to a problem that needs
* a more fine grained solution.. that will come.
* XXX also has the problems getting the FIB from curthread which will not
* always work given the fib can be overridden and prefixes can be added
* from the network stack context.
*/
VNET_DEFINE(u_int, rt_add_addr_allfibs) = 1;
SYSCTL_UINT(_net, OID_AUTO, add_addr_allfibs, CTLFLAG_RWTUN | CTLFLAG_VNET,
&VNET_NAME(rt_add_addr_allfibs), 0, "");
VNET_DEFINE(struct rtstat, rtstat);
#define V_rtstat VNET(rtstat)
VNET_DEFINE(struct radix_node_head *, rt_tables);
#define V_rt_tables VNET(rt_tables)
VNET_DEFINE(int, rttrash); /* routes not in table but not freed */
#define V_rttrash VNET(rttrash)
/*
* Convert a 'struct radix_node *' to a 'struct rtentry *'.
* The operation can be done safely (in this code) because a
* 'struct rtentry' starts with two 'struct radix_node''s, the first
#include <netipsec/ipsec6.h> #include <netinet6/ip6_ecn.h> #endif #include <netipsec/key.h> #include <netipsec/key_debug.h> #include <opencrypto/cryptodev.h> #include <opencrypto/xform.h> VNET_DEFINE(int, esp_enable) = 1; VNET_DEFINE(struct espstat, espstat); SYSCTL_DECL(_net_inet_esp); SYSCTL_VNET_INT(_net_inet_esp, OID_AUTO, esp_enable, CTLFLAG_RW, &VNET_NAME(esp_enable), 0, ""); SYSCTL_VNET_STRUCT(_net_inet_esp, IPSECCTL_STATS, stats, CTLFLAG_RD, &VNET_NAME(espstat), espstat, ""); static VNET_DEFINE(int, esp_max_ivlen); /* max iv length over all algorithms */ #define V_esp_max_ivlen VNET(esp_max_ivlen) static int esp_input_cb(struct cryptop *op); static int esp_output_cb(struct cryptop *crp); /* * NB: this is public for use by the PF_KEY support. * NB: if you add support here; be sure to add code to esp_attach below! */ struct enc_xform * esp_algorithm_lookup(int alg)
SYSCTL_ADD_OID(&ipf_clist, SYSCTL_STATIC_CHILDREN(parent), nbr, name, \ CTLFLAG_DYN|CTLTYPE_INT|CTLFLAG_VNET|access, ptr, val, sysctl_ipf_int_nat, "I", descr) #define SYSCTL_DYN_IPF_STATE(parent, nbr, name, access,ptr, val, descr) \ SYSCTL_ADD_OID(&ipf_clist, SYSCTL_STATIC_CHILDREN(parent), nbr, name, \ CTLFLAG_DYN|CTLTYPE_INT|CTLFLAG_VNET|access, ptr, val, sysctl_ipf_int_state, "I", descr) #define SYSCTL_DYN_IPF_FRAG(parent, nbr, name, access,ptr, val, descr) \ SYSCTL_ADD_OID(&ipf_clist, SYSCTL_STATIC_CHILDREN(parent), nbr, name, \ CTLFLAG_DYN|CTLTYPE_INT|CTLFLAG_VNET|access, ptr, val, sysctl_ipf_int_frag, "I", descr) #define SYSCTL_DYN_IPF_AUTH(parent, nbr, name, access,ptr, val, descr) \ SYSCTL_ADD_OID(&ipf_clist, SYSCTL_STATIC_CHILDREN(parent), nbr, name, \ CTLFLAG_DYN|CTLTYPE_INT|CTLFLAG_VNET|access, ptr, val, sysctl_ipf_int_auth, "I", descr) static struct sysctl_ctx_list ipf_clist; #define CTLFLAG_OFF 0x00800000 /* IPFilter must be disabled */ #define CTLFLAG_RWO (CTLFLAG_RW|CTLFLAG_OFF) SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &VNET_NAME(ipfmain.ipf_flags), 0, "IPF flags"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, ipf_pass, CTLFLAG_RW, &VNET_NAME(ipfmain.ipf_pass), 0, "default pass/block"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &VNET_NAME(ipfmain.ipf_active), 0, "IPF is active"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcpidletimeout, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcpidletimeout), 0, "TCP idle timeout in seconds"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcphalfclosed, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcphalfclosed), 0, "timeout for half closed TCP sessions"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcpclosewait, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcpclosewait), 0, "timeout for TCP sessions in closewait status"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcplastack, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcplastack), 0, "timeout for TCP sessions in last ack status"); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcptimeout, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcptimeout), 0, ""); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_tcpclosed, CTLFLAG_RWO, &VNET_NAME(ipfmain.ipf_tcpclosed), 0, ""); SYSCTL_IPF(_net_inet_ipf, OID_AUTO, fr_udptimeout, CTLFLAG_RWO,
ipfw_nat_t *ipfw_nat_ptr = NULL;
struct cfg_nat *(*lookup_nat_ptr)(struct nat_list *, int);
ipfw_nat_cfg_t *ipfw_nat_cfg_ptr;
ipfw_nat_cfg_t *ipfw_nat_del_ptr;
ipfw_nat_cfg_t *ipfw_nat_get_cfg_ptr;
ipfw_nat_cfg_t *ipfw_nat_get_log_ptr;
#ifdef SYSCTL_NODE
uint32_t dummy_def = IPFW_DEFAULT_RULE;
static int sysctl_ipfw_table_num(SYSCTL_HANDLER_ARGS);
SYSBEGIN(f3)
SYSCTL_NODE(_net_inet_ip, OID_AUTO, fw, CTLFLAG_RW, 0, "Firewall");
SYSCTL_VNET_INT(_net_inet_ip_fw, OID_AUTO, one_pass,
CTLFLAG_RW | CTLFLAG_SECURE3, &VNET_NAME(fw_one_pass), 0,
"Only do a single pass through ipfw when using dummynet(4)");
SYSCTL_VNET_INT(_net_inet_ip_fw, OID_AUTO, autoinc_step,
CTLFLAG_RW, &VNET_NAME(autoinc_step), 0,
"Rule number auto-increment step");
SYSCTL_VNET_INT(_net_inet_ip_fw, OID_AUTO, verbose,
CTLFLAG_RW | CTLFLAG_SECURE3, &VNET_NAME(fw_verbose), 0,
"Log matches to ipfw rules");
SYSCTL_VNET_INT(_net_inet_ip_fw, OID_AUTO, verbose_limit,
CTLFLAG_RW, &VNET_NAME(verbose_limit), 0,
"Set upper limit of matches of ipfw rules logged");
SYSCTL_UINT(_net_inet_ip_fw, OID_AUTO, default_rule, CTLFLAG_RD,
&dummy_def, 0,
"The default/max possible rule number.");
SYSCTL_VNET_PROC(_net_inet_ip_fw, OID_AUTO, tables_max,
CTLTYPE_UINT|CTLFLAG_RW, 0, 0, sysctl_ipfw_table_num, "IU",
* 1 require hardware support
* -1 require software support
* 0 take anything
*/
VNET_DEFINE(int, crypto_support) = CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
FEATURE(ipsec, "Internet Protocol Security (IPsec)");
#ifdef IPSEC_NAT_T
FEATURE(ipsec_natt, "UDP Encapsulation of IPsec ESP Packets ('NAT-T')");
#endif
SYSCTL_DECL(_net_inet_ipsec);
/* net.inet.ipsec */
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEF_POLICY, def_policy,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(def_policy).policy, 0,
"IPsec default policy.");
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEF_ESP_TRANSLEV, esp_trans_deflev,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip4_esp_trans_deflev), 0,
"Default ESP transport mode level");
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEF_ESP_NETLEV, esp_net_deflev,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip4_esp_net_deflev), 0,
"Default ESP tunnel mode level.");
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEF_AH_TRANSLEV, ah_trans_deflev,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip4_ah_trans_deflev), 0,
"AH transfer mode default level.");
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_DEF_AH_NETLEV, ah_net_deflev,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip4_ah_net_deflev), 0,
"AH tunnel mode default level.");
SYSCTL_INT(_net_inet_ipsec, IPSECCTL_AH_CLEARTOS, ah_cleartos,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ah_cleartos), 0,
extern struct protosw inet6sw[];
#ifdef INET6
#ifdef IPSEC
#ifdef IPSEC_FILTERTUNNEL
static VNET_DEFINE(int, ip6_ipsec6_filtertunnel) = 1;
#else
static VNET_DEFINE(int, ip6_ipsec6_filtertunnel) = 0;
#endif
#define V_ip6_ipsec6_filtertunnel VNET(ip6_ipsec6_filtertunnel)
SYSCTL_DECL(_net_inet6_ipsec6);
SYSCTL_INT(_net_inet6_ipsec6, OID_AUTO, filtertunnel,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_ipsec6_filtertunnel), 0,
"If set filter packets from an IPsec tunnel.");
#endif /* IPSEC */
#endif /* INET6 */
/*
* Check if we have to jump over firewall processing for this packet.
* Called from ip6_input().
* 1 = jump over firewall, 0 = packet goes through firewall.
*/
int
ip6_ipsec_filtertunnel(struct mbuf *m)
{
#ifdef IPSEC
/*
static VNET_DEFINE(int, flowtable_nmbflows);
static VNET_DEFINE(int, flowtable_ready) = 0;
#define V_flowtable_enable VNET(flowtable_enable)
#define V_flowtable_debug VNET(flowtable_debug)
#define V_flowtable_syn_expire VNET(flowtable_syn_expire)
#define V_flowtable_udp_expire VNET(flowtable_udp_expire)
#define V_flowtable_fin_wait_expire VNET(flowtable_fin_wait_expire)
#define V_flowtable_tcp_expire VNET(flowtable_tcp_expire)
#define V_flowtable_nmbflows VNET(flowtable_nmbflows)
#define V_flowtable_ready VNET(flowtable_ready)
static SYSCTL_NODE(_net_inet, OID_AUTO, flowtable, CTLFLAG_RD, NULL,
"flowtable");
SYSCTL_VNET_INT(_net_inet_flowtable, OID_AUTO, debug, CTLFLAG_RW,
&VNET_NAME(flowtable_debug), 0, "print debug info.");
SYSCTL_VNET_INT(_net_inet_flowtable, OID_AUTO, enable, CTLFLAG_RW,
&VNET_NAME(flowtable_enable), 0, "enable flowtable caching.");
/*
* XXX This does not end up updating timeouts at runtime
* and only reflects the value for the last table added :-/
*/
SYSCTL_VNET_INT(_net_inet_flowtable, OID_AUTO, syn_expire, CTLFLAG_RW,
&VNET_NAME(flowtable_syn_expire), 0,
"seconds after which to remove syn allocated flow.");
SYSCTL_VNET_INT(_net_inet_flowtable, OID_AUTO, udp_expire, CTLFLAG_RW,
&VNET_NAME(flowtable_udp_expire), 0,
"seconds after which to remove flow allocated to UDP.");
SYSCTL_VNET_INT(_net_inet_flowtable, OID_AUTO, fin_wait_expire, CTLFLAG_RW,
&VNET_NAME(flowtable_fin_wait_expire), 0,
int tcp_keepcnt = TCPTV_KEEPCNT;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, keepcnt, CTLFLAG_RW, &tcp_keepcnt, 0,
"Number of keepalive probes to send");
/* max idle probes */
int tcp_maxpersistidle;
int tcp_rexmit_drop_options = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rexmit_drop_options, CTLFLAG_RW,
&tcp_rexmit_drop_options, 0,
"Drop TCP options from 3rd and later retransmitted SYN");
VNET_DEFINE(int, tcp_pmtud_blackhole_detect);
SYSCTL_INT(_net_inet_tcp, OID_AUTO, pmtud_blackhole_detection,
CTLFLAG_RW|CTLFLAG_VNET,
&VNET_NAME(tcp_pmtud_blackhole_detect), 0,
"Path MTU Discovery Black Hole Detection Enabled");
#ifdef INET
VNET_DEFINE(int, tcp_pmtud_blackhole_mss) = 1200;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, pmtud_blackhole_mss,
CTLFLAG_RW|CTLFLAG_VNET,
&VNET_NAME(tcp_pmtud_blackhole_mss), 0,
"Path MTU Discovery Black Hole Detection lowered MSS");
#endif
#ifdef INET6
VNET_DEFINE(int, tcp_v6pmtud_blackhole_mss) = 1220;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, v6pmtud_blackhole_mss,
CTLFLAG_RW|CTLFLAG_VNET,
&VNET_NAME(tcp_v6pmtud_blackhole_mss), 0,
* 1 require hardware support
* -1 require software support
* 0 take anything
*/
VNET_DEFINE(int, crypto_support) = CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
FEATURE(ipsec, "Internet Protocol Security (IPsec)");
#ifdef IPSEC_NAT_T
FEATURE(ipsec_natt, "UDP Encapsulation of IPsec ESP Packets ('NAT-T')");
#endif
SYSCTL_DECL(_net_inet_ipsec);
/* net.inet.ipsec */
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_DEF_POLICY, def_policy,
CTLFLAG_RW, &VNET_NAME(ip4_def_policy).policy, 0,
"IPsec default policy.");
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_DEF_ESP_TRANSLEV, esp_trans_deflev,
CTLFLAG_RW, &VNET_NAME(ip4_esp_trans_deflev), 0,
"Default ESP transport mode level");
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_DEF_ESP_NETLEV, esp_net_deflev,
CTLFLAG_RW, &VNET_NAME(ip4_esp_net_deflev), 0,
"Default ESP tunnel mode level.");
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_DEF_AH_TRANSLEV, ah_trans_deflev,
CTLFLAG_RW, &VNET_NAME(ip4_ah_trans_deflev), 0,
"AH transfer mode default level.");
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_DEF_AH_NETLEV, ah_net_deflev,
CTLFLAG_RW, &VNET_NAME(ip4_ah_net_deflev), 0,
"AH tunnel mode default level.");
SYSCTL_VNET_INT(_net_inet_ipsec, IPSECCTL_AH_CLEARTOS, ah_cleartos,
CTLFLAG_RW, &VNET_NAME(ah_cleartos), 0,
sizeof (struct ah) : sizeof (struct ah) + sizeof (u_int32_t))
/*
* Return authenticator size in bytes. The old protocol is known
* to use a fixed 16-byte authenticator. The new algorithm use 12-byte
* authenticator.
*/
#define AUTHSIZE(sav) ah_authsize(sav)
VNET_DEFINE(int, ah_enable) = 1; /* control flow of packets with AH */
VNET_DEFINE(int, ah_cleartos) = 1; /* clear ip_tos when doing AH calc */
VNET_DEFINE(struct ahstat, ahstat);
#ifdef INET
SYSCTL_DECL(_net_inet_ah);
SYSCTL_VNET_INT(_net_inet_ah, OID_AUTO,
ah_enable, CTLFLAG_RW, &VNET_NAME(ah_enable), 0, "");
SYSCTL_VNET_INT(_net_inet_ah, OID_AUTO,
ah_cleartos, CTLFLAG_RW, &VNET_NAME(ah_cleartos), 0, "");
SYSCTL_VNET_STRUCT(_net_inet_ah, IPSECCTL_STATS,
stats, CTLFLAG_RD, &VNET_NAME(ahstat), ahstat, "");
#endif
static unsigned char ipseczeroes[256]; /* larger than an ip6 extension hdr */
static int ah_input_cb(struct cryptop*);
static int ah_output_cb(struct cryptop*);
static int
ah_authsize(struct secasvar *sav)
{
static void nd6_dad_timer(struct dadq *);
static void nd6_dad_duplicated(struct ifaddr *, struct dadq *);
static void nd6_dad_ns_output(struct dadq *, struct ifaddr *);
static void nd6_dad_ns_input(struct ifaddr *, struct nd_opt_nonce *);
static void nd6_dad_na_input(struct ifaddr *);
static void nd6_na_output_fib(struct ifnet *, const struct in6_addr *,
const struct in6_addr *, u_long, int, struct sockaddr *, u_int);
static void nd6_ns_output_fib(struct ifnet *, const struct in6_addr *,
const struct in6_addr *, struct llentry *, uint8_t *, u_int);
static VNET_DEFINE(int, dad_enhanced) = 1;
#define V_dad_enhanced VNET(dad_enhanced)
SYSCTL_DECL(_net_inet6_ip6);
SYSCTL_INT(_net_inet6_ip6, OID_AUTO, dad_enhanced, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(dad_enhanced), 0,
"Enable Enhanced DAD, which adds a random nonce to NS messages for DAD.");
static VNET_DEFINE(int, dad_maxtry) = 15; /* max # of *tries* to
transmit DAD packet */
#define V_dad_maxtry VNET(dad_maxtry)
/*
* Input a Neighbor Solicitation Message.
*
* Based on RFC 2461
* Based on RFC 2462 (duplicate address detection)
*/
void
nd6_ns_input(struct mbuf *m, int off, int icmp6len)
{
if (rt) {
RT_LOCK(rt);
if (rt->rt_flags & RTPRF_OURS) {
rt->rt_flags &= ~RTPRF_OURS;
rt->rt_rmx.rmx_expire = 0;
}
RT_UNLOCK(rt);
}
return rn;
}
static VNET_DEFINE(int, rtq_reallyold) = 60*60; /* one hour is "really old" */
#define V_rtq_reallyold VNET(rtq_reallyold)
SYSCTL_VNET_INT(_net_inet_ip, IPCTL_RTEXPIRE, rtexpire, CTLFLAG_RW,
&VNET_NAME(rtq_reallyold), 0,
"Default expiration time on dynamically learned routes");
/* never automatically crank down to less */
static VNET_DEFINE(int, rtq_minreallyold) = 10;
#define V_rtq_minreallyold VNET(rtq_minreallyold)
SYSCTL_VNET_INT(_net_inet_ip, IPCTL_RTMINEXPIRE, rtminexpire, CTLFLAG_RW,
&VNET_NAME(rtq_minreallyold), 0,
"Minimum time to attempt to hold onto dynamically learned routes");
/* 128 cached routes is "too many" */
static VNET_DEFINE(int, rtq_toomany) = 128;
#define V_rtq_toomany VNET(rtq_toomany)
SYSCTL_VNET_INT(_net_inet_ip, IPCTL_RTMAXCACHE, rtmaxcache, CTLFLAG_RW,
&VNET_NAME(rtq_toomany), 0,
"Upper limit on dynamically learned routes");
sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
{
int error, val;
val = V_ip6_temp_valid_lifetime;
error = sysctl_handle_int(oidp, &val, 0, req);
if (error != 0 || !req->newptr)
return (error);
if (val < V_ip6_temp_preferred_lifetime)
return (EINVAL);
V_ip6_temp_valid_lifetime = val;
return (0);
}
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
"Enable forwarding of IPv6 packets between interfaces");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
"Send ICMPv6 redirects for unforwardable IPv6 packets");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
"Default hop limit to use for outgoing IPv6 packets");
SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
ip6stat,
"IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0,
"Default maximum number of outstanding fragmented IPv6 packets. "
"A value of 0 means no fragmented packets will be accepted, while a "
"a value of -1 means no limit");
* by an SNMP agent
*
* Perhaps someday we will make addresses accessible via this interface
* as well (then there will be four such...). The reason that the
* index comes before the last element in the name is because it
* seems more orthogonal that way, particularly with the possibility
* of other per-interface data living down here as well (e.g., integrated
* services stuff).
*/
SYSCTL_DECL(_net_link_generic);
SYSCTL_NODE(_net_link_generic, IFMIB_SYSTEM, system, CTLFLAG_RW, 0,
"Variables global to all interfaces");
SYSCTL_VNET_INT(_net_link_generic_system, IFMIB_IFCOUNT, ifcount, CTLFLAG_RD,
&VNET_NAME(if_index), 0,
"Number of configured interfaces");
static int
sysctl_ifdata(SYSCTL_HANDLER_ARGS) /* XXX bad syntax! */
{
int *name = (int *)arg1;
int error;
u_int namelen = arg2;
struct ifnet *ifp;
struct ifmibdata ifmd;
size_t dlen;
char *dbuf;
if (namelen != 2)
return EINVAL;
#include <netinet/in_pcb.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_mroute.h>
#include <netinet/ip_icmp.h>
#include <netipsec/ipsec_support.h>
#include <machine/stdarg.h>
#include <security/mac/mac_framework.h>
VNET_DEFINE(int, ip_defttl) = IPDEFTTL;
SYSCTL_INT(_net_inet_ip, IPCTL_DEFTTL, ttl, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(ip_defttl), 0,
"Maximum TTL on IP packets");
VNET_DEFINE(struct inpcbhead, ripcb);
VNET_DEFINE(struct inpcbinfo, ripcbinfo);
#define V_ripcb VNET(ripcb)
#define V_ripcbinfo VNET(ripcbinfo)
/*
* Control and data hooks for ipfw, dummynet, divert and so on.
* The data hooks are not used here but it is convenient
* to keep them all in one place.
*/
VNET_DEFINE(ip_fw_chk_ptr_t, ip_fw_chk_ptr) = NULL;
VNET_DEFINE(ip_fw_ctl_ptr_t, ip_fw_ctl_ptr) = NULL;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_reuse_ext,
CTLFLAG_RD, &tcp_pcap_alloc_reuse_ext, 0,
"Number of mbufs with external storage reused for the TCP PCAP "
"functionality");
SYSCTL_INT(_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_reuse_mbuf,
CTLFLAG_RD, &tcp_pcap_alloc_reuse_mbuf, 0,
"Number of mbufs with internal storage reused for the TCP PCAP "
"functionality");
SYSCTL_INT(_net_inet_tcp, OID_AUTO, tcp_pcap_alloc_new_mbuf,
CTLFLAG_RD, &tcp_pcap_alloc_new_mbuf, 0,
"Number of new mbufs allocated for the TCP PCAP functionality");
VNET_DEFINE(int, tcp_pcap_packets) = 0;
#define V_tcp_pcap_packets VNET(tcp_pcap_packets)
SYSCTL_INT(_net_inet_tcp, OID_AUTO, tcp_pcap_packets,
CTLFLAG_RW, &VNET_NAME(tcp_pcap_packets), 0,
"Default number of packets saved per direction per TCPCB");
/* Initialize the values. */
static void
tcp_pcap_max_set(void)
{
tcp_pcap_clusters_referenced_max = nmbclusters / 4;
}
void
tcp_pcap_init(void)
{
tcp_pcap_max_set();
#define V_dyn_keepalive_period VNET(dyn_keepalive_period)
#define V_dyn_keepalive VNET(dyn_keepalive)
static VNET_DEFINE(u_int32_t, dyn_count); /* # of dynamic rules */
static VNET_DEFINE(u_int32_t, dyn_max); /* max # of dynamic rules */
#define V_dyn_count VNET(dyn_count)
#define V_dyn_max VNET(dyn_max)
#ifdef SYSCTL_NODE
SYSBEGIN(f2)
SYSCTL_DECL(_net_inet_ip_fw);
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, dyn_buckets,
CTLFLAG_RW, &VNET_NAME(dyn_buckets), 0,
"Number of dyn. buckets");
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, curr_dyn_buckets,
CTLFLAG_RD, &VNET_NAME(curr_dyn_buckets), 0,
"Current Number of dyn. buckets");
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, dyn_count,
CTLFLAG_RD, &VNET_NAME(dyn_count), 0,
"Number of dyn. rules");
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, dyn_max,
CTLFLAG_RW, &VNET_NAME(dyn_max), 0,
"Max number of dyn. rules");
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, dyn_ack_lifetime,
CTLFLAG_RW, &VNET_NAME(dyn_ack_lifetime), 0,
"Lifetime of dyn. rules for acks");
SYSCTL_VNET_UINT(_net_inet_ip_fw, OID_AUTO, dyn_syn_lifetime,
CTLFLAG_RW, &VNET_NAME(dyn_syn_lifetime), 0,
#include <netipsec/key_debug.h>
#include <opencrypto/cryptodev.h>
#include <opencrypto/xform.h>
VNET_DEFINE(int, esp_enable) = 1;
VNET_PCPUSTAT_DEFINE(struct espstat, espstat);
VNET_PCPUSTAT_SYSINIT(espstat);
#ifdef VIMAGE
VNET_PCPUSTAT_SYSUNINIT(espstat);
#endif /* VIMAGE */
SYSCTL_DECL(_net_inet_esp);
SYSCTL_INT(_net_inet_esp, OID_AUTO, esp_enable,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(esp_enable), 0, "");
SYSCTL_VNET_PCPUSTAT(_net_inet_esp, IPSECCTL_STATS, stats,
struct espstat, espstat,
"ESP statistics (struct espstat, netipsec/esp_var.h");
static int esp_input_cb(struct cryptop *op);
static int esp_output_cb(struct cryptop *crp);
/*
* NB: this is public for use by the PF_KEY support.
* NB: if you add support here; be sure to add code to esp_attach below!
*/
struct enc_xform *
esp_algorithm_lookup(int alg)
{
if (alg >= ESP_ALG_MAX)
static struct protosw in_gif_protosw = {
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,
.pr_protocol = 0/* IPPROTO_IPV[46] */,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = in_gif_input10,
.pr_output = (pr_output_t*)rip_output,
.pr_ctloutput = rip_ctloutput,
.pr_usrreqs = &rip_usrreqs
};
#define GIF_TTL 30
static VNET_DEFINE(int, ip_gif_ttl) = GIF_TTL;
#define V_ip_gif_ttl VNET(ip_gif_ttl)
SYSCTL_VNET_INT(_net_inet_ip, IPCTL_GIF_TTL, gifttl, CTLFLAG_RW,
&VNET_NAME(ip_gif_ttl), 0, "");
int
in_gif_output(struct ifnet *ifp, struct mbuf *m, int proto, uint8_t ecn)
{
GIF_RLOCK_TRACKER;
struct gif_softc *sc = ifp->if_softc;
struct ip *ip;
int len;
/* prepend new IP header */
len = sizeof(struct ip);
#ifndef __NO_STRICT_ALIGNMENT
if (proto == IPPROTO_ETHERIP)
len += ETHERIP_ALIGN;
#endif
SYSCTL_INT(_net_inet_tcp, OID_AUTO, keepcnt, CTLFLAG_RW, &tcp_keepcnt, 0,
"Number of keepalive probes to send");
/* max idle probes */
int tcp_maxpersistidle;
static int tcp_rexmit_drop_options = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rexmit_drop_options, CTLFLAG_RW,
&tcp_rexmit_drop_options, 0,
"Drop TCP options from 3rd and later retransmitted SYN");
static VNET_DEFINE(int, tcp_pmtud_blackhole_detect);
#define V_tcp_pmtud_blackhole_detect VNET(tcp_pmtud_blackhole_detect)
SYSCTL_INT(_net_inet_tcp, OID_AUTO, pmtud_blackhole_detection,
CTLFLAG_RW|CTLFLAG_VNET,
&VNET_NAME(tcp_pmtud_blackhole_detect), 0,
"Path MTU Discovery Black Hole Detection Enabled");
static VNET_DEFINE(int, tcp_pmtud_blackhole_activated);
#define V_tcp_pmtud_blackhole_activated \
VNET(tcp_pmtud_blackhole_activated)
SYSCTL_INT(_net_inet_tcp, OID_AUTO, pmtud_blackhole_activated,
CTLFLAG_RD|CTLFLAG_VNET,
&VNET_NAME(tcp_pmtud_blackhole_activated), 0,
"Path MTU Discovery Black Hole Detection, Activation Count");
static VNET_DEFINE(int, tcp_pmtud_blackhole_activated_min_mss);
#define V_tcp_pmtud_blackhole_activated_min_mss \
VNET(tcp_pmtud_blackhole_activated_min_mss)
SYSCTL_INT(_net_inet_tcp, OID_AUTO, pmtud_blackhole_activated_min_mss,
CTLFLAG_RD|CTLFLAG_VNET,
"Generic Tunnel Interface");
#ifndef MAX_GIF_NEST
/*
* This macro controls the default upper limitation on nesting of gif tunnels.
* Since, setting a large value to this macro with a careless configuration
* may introduce system crash, we don't allow any nestings by default.
* If you need to configure nested gif tunnels, you can define this macro
* in your kernel configuration file. However, if you do so, please be
* careful to configure the tunnels so that it won't make a loop.
*/
#define MAX_GIF_NEST 1
#endif
VNET_DEFINE_STATIC(int, max_gif_nesting) = MAX_GIF_NEST;
#define V_max_gif_nesting VNET(max_gif_nesting)
SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(max_gif_nesting), 0, "Max nested tunnels");
static int
gif_clone_create(struct if_clone *ifc, int unit, caddr_t params)
{
struct gif_softc *sc;
sc = malloc(sizeof(struct gif_softc), M_GIF, M_WAITOK | M_ZERO);
sc->gif_fibnum = curthread->td_proc->p_fibnum;
GIF2IFP(sc) = if_alloc(IFT_GIF);
GIF2IFP(sc)->if_softc = sc;
if_initname(GIF2IFP(sc), gifname, unit);
GIF2IFP(sc)->if_addrlen = 0;
GIF2IFP(sc)->if_mtu = GIF_MTU;
GIF2IFP(sc)->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
#include <netinet6/scope6_var.h>
#ifdef ENABLE_DEFAULT_SCOPE
VNET_DEFINE(int, ip6_use_defzone) = 1;
#else
VNET_DEFINE(int, ip6_use_defzone) = 0;
#endif
VNET_DEFINE(int, deembed_scopeid) = 1;
SYSCTL_DECL(_net_inet6_ip6);
SYSCTL_VNET_INT(_net_inet6_ip6, OID_AUTO, deembed_scopeid, CTLFLAG_RW,
&VNET_NAME(deembed_scopeid), 0,
"Extract embedded zone ID and set it to sin6_scope_id in sockaddr_in6.");
/*
* The scope6_lock protects the global sid default stored in
* sid_default below.
*/
static struct mtx scope6_lock;
#define SCOPE6_LOCK_INIT() mtx_init(&scope6_lock, "scope6_lock", NULL, MTX_DEF)
#define SCOPE6_LOCK() mtx_lock(&scope6_lock)
#define SCOPE6_UNLOCK() mtx_unlock(&scope6_lock)
#define SCOPE6_LOCK_ASSERT() mtx_assert(&scope6_lock, MA_OWNED)
static VNET_DEFINE(struct scope6_id, sid_default);
#define V_sid_default VNET(sid_default)