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opnsense-src/sys/netinet
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Mike Karels 3ee882bf21 Change lowest address on subnet (host 0) not to broadcast by default. 
The address with a host part of all zeros was used as a broadcast long
ago, but the default has been all ones since 4.3BSD and RFC1122.  Until
now, we would broadcast the host zero address as well as the configured
address.  Change to not broadcasting that address by default, but add a
sysctl (net.inet.ip.broadcast_lowest) to re-enable it.  Note that the
correct way to use the zero address for broadcast would be to configure
it as the broadcast address for the network.

See https:/datatracker.ietf.org/doc/draft-schoen-intarea-lowest-address/
and the discussion in https://reviews.freebsd.org/D19316.  Note, Linux
now implements this.

Reviewed by:	rgrimes, tuexen; melifaro (previous version)
Relnotes:	yes
Differential Revision: https://reviews.freebsd.org/D31861

(cherry picked from commit fd0765933c)
2021-10-19 08:16:32 -05:00
..
cc tcp: fix two bugs in new reno 2021-06-14 01:29:14 +02:00
khelp
libalias libalias: fix divide by zero causing panic 2021-07-14 13:49:21 +02:00
netdump Use zfree() instead of explicit_bzero() and free(). 2020-06-25 20:17:34 +00:00
tcp_stacks tcp: fix RACK and BBR when using VIMAGE enabled kernel 2021-07-22 11:13:31 +02:00
accf_data.c Define a module version for accept filter modules. 2020-05-19 18:35:08 +00:00
accf_dns.c Define a module version for accept filter modules. 2020-05-19 18:35:08 +00:00
accf_http.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
dccp.h Add header definition for RFC4340, Datagram Congestion Control Protocol 2020-06-17 13:27:13 +00:00
icmp6.h icmp6: Count packets dropped due to an invalid hop limit 2020-10-19 17:07:19 +00:00
icmp_var.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_ether.c net: Fix memory leaks upon arp_fillheader() failures 2021-09-17 09:14:12 -04:00
if_ether.h
igmp.c igmp: Avoid an out-of-bounds access when zeroing counters 2021-05-12 09:31:39 -04:00
igmp.h
igmp_var.h igmp: convert igmpstat to use PCPU counters 2020-11-08 18:49:23 +00:00
in.c Change lowest address on subnet (host 0) not to broadcast by default. 2021-10-19 08:16:32 -05:00
in.h Add IP(V6)_VLAN_PCP to set 802.1 priority per-flow. 2020-10-09 12:06:43 +00:00
in_cksum.c
in_debug.c
in_fib.c Add modular fib lookup framework. 2020-12-25 11:33:17 +00:00
in_fib.h Refactor fib4/fib6 functions. 2020-11-29 13:41:49 +00:00
in_fib_algo.c Fix IPv4 fib bsearch4() lookup array construction. 2021-01-17 20:32:26 +00:00
in_fib_dxr.c [fib_algo][dxr] Retire counters which are no longer used 2021-10-13 22:06:49 +02:00
in_gif.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
in_jail.c
in_kdtrace.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
in_kdtrace.h Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
in_mcast.c Always use inp fib in the inp_lookup_mcast_ifp(). 2021-04-29 08:47:31 +00:00
in_pcb.c This pulls over all the changes that are in the netflix 2021-06-08 01:18:32 +02:00
in_pcb.h tcp: HPTS performance enhancements 2021-07-13 21:58:30 +02:00
in_pcbgroup.c inet(3): Fix a few common typos in source code comments 2021-08-31 08:11:48 +02:00
in_prot.c
in_proto.c Remove unused nhop_ref_any() function. 2020-09-20 21:32:52 +00:00
in_rmx.c Refactor rib iterator functions. 2020-11-22 20:21:10 +00:00
in_rss.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_rss.h Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_systm.h
in_var.h Further refactor IPv4 interface route creation. 2021-01-21 21:48:49 +00:00
ip.h
ip6.h net: Introduce IPV6_DSCP(), IPV6_ECN() and IPV6_TRAFFIC_CLASS() macros 2021-05-10 16:30:44 +02:00
ip_carp.c Further refactor IPv4 interface route creation. 2021-01-21 21:48:49 +00:00
ip_carp.h carp: replace caddr_t with char * 2019-12-06 16:35:48 +00:00
ip_divert.c socket: Implement SO_RERROR 2021-08-10 18:54:00 -07:00
ip_divert.h
ip_dummynet.h ipfw: use unsigned int for dummynet bandwidth 2021-08-26 14:05:26 +02:00
ip_ecn.c
ip_ecn.h
ip_encap.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_encap.h
ip_fastfwd.c routing: Allow using IPv6 next-hops for IPv4 routes (RFC 5549). 2021-09-07 21:25:06 +00:00
ip_fw.h Allow setting alias port ranges in libalias and ipfw. 2021-02-17 10:13:54 -08:00
ip_gre.c Introduce NET_EPOCH_CALL() macro and use it everywhere where we free 2020-01-15 06:05:20 +00:00
ip_icmp.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_icmp.h
ip_id.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
ip_input.c routing: Allow using IPv6 next-hops for IPv4 routes (RFC 5549). 2021-09-07 21:25:06 +00:00
ip_mroute.c socket: Implement SO_RERROR 2021-08-10 18:54:00 -07:00
ip_mroute.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_options.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_options.h
ip_output.c routing: Allow using IPv6 next-hops for IPv4 routes (RFC 5549). 2021-09-07 21:25:06 +00:00
ip_reass.c ip_reass: do less work in ipreass_slowtimo if possible 2021-08-18 09:44:44 +00:00
ip_var.h An earlier commit effectively turned out the fast forwading path 2020-11-12 21:58:47 +00:00
pim.h
pim_var.h
raw_ip.c socket: Implement SO_RERROR 2021-08-10 18:54:00 -07:00
sctp.h Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_asconf.c sctp: Fix errno in case of association setup failures 2021-07-13 20:30:57 +02:00
sctp_asconf.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_bsd_addr.c Don't pass RFPROC to kproc_create(), it is redundant. 2021-03-29 11:10:49 -07:00
sctp_bsd_addr.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_cc_functions.c Minor cleanups. 2020-10-07 15:22:48 +00:00
sctp_constants.h sctp: Fix errno in case of association setup failures 2021-07-13 20:30:57 +02:00
sctp_crc32.c No need to include netinet/sctp_crc32.h twice. 2020-06-22 14:36:14 +00:00
sctp_crc32.h Add the SCTP_SUPPORT kernel option. 2020-06-18 19:32:34 +00:00
sctp_header.h Whitespace changes. 2020-09-24 12:26:06 +00:00
sctp_indata.c sctp: Fix errno in case of association setup failures 2021-07-13 20:30:57 +02:00
sctp_indata.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_input.c sctp: Fix a typo in a comment 2021-09-29 19:18:27 +02:00
sctp_input.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_kdtrace.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctp_kdtrace.h Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctp_lock_bsd.h sctp: Add macros to assert on inp info lock state 2021-09-08 08:40:29 -04:00
sctp_module.c Provide support for building SCTP as a loadable module. 2020-07-10 14:56:05 +00:00
sctp_os.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_os_bsd.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_output.c sctp: Fix iterator synchronization in sctp_sendall() 2021-09-14 08:51:54 -04:00
sctp_output.h Whitespace changes. 2020-09-24 12:26:06 +00:00
sctp_pcb.c sctp: Clear assoc socket references when freeing a PCB 2021-09-16 08:37:53 -04:00
sctp_pcb.h sctp: Remove an unused sctp_inpcb field 2021-09-14 08:51:45 -04:00
sctp_peeloff.c sctp: Remove an unused sctp_inpcb field 2021-09-14 08:51:45 -04:00
sctp_peeloff.h
sctp_ss_functions.c Fix a few typos in comments 2021-03-20 11:13:01 +01:00
sctp_structs.h sctp: improve consistency 2021-03-02 13:22:40 +01:00
sctp_syscalls.c Convert remaining cap_rights_init users to cap_rights_init_one 2021-01-12 13:16:10 +00:00
sctp_sysctl.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_sysctl.h Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_timer.c sctp: Fix errno in case of association setup failures 2021-07-13 20:30:57 +02:00
sctp_timer.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_uio.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_usrreq.c sctp: Fix races around sctp_inpcb_free() 2021-09-14 08:51:35 -04:00
sctp_var.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctputil.c socket: Rename sb(un)lock() and interlock with listen(2) 2021-10-07 09:56:47 -04:00
sctputil.h sctp: Fix errno in case of association setup failures 2021-07-13 20:30:57 +02:00
siftr.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp.h pf: syncookie support 2021-07-27 09:42:25 +02:00
tcp_accounting.h This brings into sync FreeBSD with the netflix versions of rack and bbr. 2021-06-09 01:56:18 +02:00
tcp_debug.c
tcp_debug.h
tcp_fastopen.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_fastopen.h
tcp_fsm.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00
tcp_hostcache.c tcp: Use jenkins_hash32() in hostcache 2021-04-16 22:44:03 +02:00
tcp_hostcache.h tcp: Use jenkins_hash32() in hostcache 2021-04-16 22:44:03 +02:00
tcp_hpts.c tcp: Fix 32 bit platform breakage 2021-07-13 21:59:50 +02:00
tcp_hpts.h tcp: HPTS performance enhancements 2021-07-13 21:58:30 +02:00
tcp_input.c tcp: Add PRR cwnd reduction for non-SACK loss 2021-08-02 13:59:23 +02:00
tcp_log_buf.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_log_buf.h This brings into sync FreeBSD with the netflix versions of rack and bbr. 2021-06-09 01:56:18 +02:00
tcp_lro.c tcp: HPTS performance enhancements 2021-07-13 21:58:30 +02:00
tcp_lro.h tcp: HPTS performance enhancements 2021-07-13 21:58:30 +02:00
tcp_offload.c Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
tcp_offload.h Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
tcp_output.c tcp: Preparation for allowing hardware TLS to be able to kick a tcp connection that is retransmitting too much out of hardware and back to software. 2021-07-13 21:56:06 +02:00
tcp_pcap.c Step 4.2: start divorce of M_EXT and M_EXTPG 2020-05-03 00:37:16 +00:00
tcp_pcap.h
tcp_ratelimit.c This brings into sync FreeBSD with the netflix versions of rack and bbr. 2021-06-09 01:56:18 +02:00
tcp_ratelimit.h This takes Warners suggested approach to making it so that 2021-06-09 01:59:21 +02:00
tcp_reass.c [tcp] Keep socket buffer locked until upcall 2021-06-09 12:51:19 +02:00
tcp_sack.c This brings into sync FreeBSD with the netflix versions of rack and bbr. 2021-06-09 01:56:18 +02:00
tcp_seq.h
tcp_stats.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tcp_subr.c tcp: tolerate missing timestamps 2021-07-13 20:24:09 +02:00
tcp_syncache.c mend 2021-06-07 11:01:28 +02:00
tcp_syncache.h mend 2021-06-07 11:01:28 +02:00
tcp_timer.c Improve the TCP blackhole detection. The principle is to reduce the 2020-04-14 16:35:05 +00:00
tcp_timer.h 504ebd612e: kern: sonewconn: set so_options before pru_attach() 2021-02-23 22:48:42 -06:00
tcp_timewait.c mend 2021-06-07 11:01:28 +02:00
tcp_usrreq.c tcp: enter network epoch when calling tfb_tcp_fb_fini 2021-07-13 21:54:43 +02:00
tcp_var.h tcp: Preparation for allowing hardware TLS to be able to kick a tcp connection that is retransmitting too much out of hardware and back to software. 2021-07-13 21:56:06 +02:00
tcpip.h
toecore.c routing: Allow using IPv6 next-hops for IPv4 routes (RFC 5549). 2021-09-07 21:25:06 +00:00
toecore.h Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
udp.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00
udp_usrreq.c udp: Fix soroverflow SOCKBUF unlocking 2021-08-10 18:54:18 -07:00
udp_var.h Add a knob to allow zero UDP checksums for UDP/IPv6 traffic on the given UDP port. 2020-09-18 02:21:15 +00:00
udplite.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00