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8a6a1f1764
linux/net/ipv6
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Pablo Neira Ayuso 8a6a1f1764 net: ipv6: split skbuff into fragments transformer 
This patch exposes a new API to refragment a skbuff. This allows you to
split either a linear skbuff or to force the refragmentation of an
existing fraglist using a different mtu. The API consists of:

* ip6_frag_init(), that initializes the internal state of the transformer.
* ip6_frag_next(), that allows you to fetch the next fragment. This function
  internally allocates the skbuff that represents the fragment, it pushes
  the IPv6 header, and it also copies the payload for each fragment.

The ip6_frag_state object stores the internal state of the splitter.

This code has been extracted from ip6_fragment(). Symbols are also
exported to allow to reuse this iterator from the bridge codepath to
build its own refragmentation routine by reusing the existing codebase.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-30 14:18:17 -07:00
..
ila treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
netfilter net: dynamically allocate fqdir structures 2019-05-26 14:08:05 -07:00
addrconf_core.c ipv6: Add delete route hook to stubs 2019-05-22 17:48:43 -07:00
addrconf.c ipv6: Make fib6_nh optional at the end of fib6_info 2019-05-24 13:26:44 -07:00
addrlabel.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
af_inet6.c ipv6: export function to send route updates 2019-05-22 17:48:43 -07:00
ah6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
anycast.c net/ipv6: compute anycast address hash only if dev is null 2018-11-08 17:04:43 -08:00
calipso.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
datagram.c net: Treat sock->sk_drops as an unsigned int when printing 2019-05-19 10:31:10 -07:00
esp6_offload.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-02 22:14:21 -04:00
esp6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
exthdrs_core.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
exthdrs_offload.c
exthdrs.c
fib6_notifier.c
fib6_rules.c ipv6: Use result arg in fib_lookup_arg consistently 2019-04-23 21:53:11 -07:00
fou6.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
icmp.c ipv6: Add rate limit mask for ICMPv6 messages 2019-04-18 16:58:37 -07:00
inet6_connection_sock.c
inet6_hashtables.c net: tcp6: prefer listeners bound to an address 2018-12-14 15:55:20 -08:00
ip6_checksum.c net: udp: fix handling of CHECKSUM_COMPLETE packets 2018-10-24 14:18:16 -07:00
ip6_fib.c ipv6: Make fib6_nh optional at the end of fib6_info 2019-05-24 13:26:44 -07:00
ip6_flowlabel.c ipv6/flowlabel: wait rcu grace period before put_pid() 2019-04-29 23:30:13 -04:00
ip6_gre.c net: ip6_gre: fix possible use-after-free in ip6erspan_rcv 2019-04-08 16:16:47 -07:00
ip6_icmp.c
ip6_input.c net: use indirect calls helpers at early demux stage 2019-05-05 10:38:04 -07:00
ip6_offload.c gso: validate gso_type on ipip style tunnels 2019-02-20 11:24:27 -08:00
ip6_offload.h
ip6_output.c net: ipv6: split skbuff into fragments transformer 2019-05-30 14:18:17 -07:00
ip6_tunnel.c ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type 2019-04-02 13:19:34 -07:00
ip6_udp_tunnel.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ip6_vti.c xfrm: store xfrm_mode directly, not its address 2019-04-08 09:15:28 +02:00
ip6mr.c rhashtable: use bit_spin_locks to protect hash bucket. 2019-04-07 19:12:12 -07:00
ipcomp6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
ipv6_sockglue.c net: ipv6: add socket option IPV6_ROUTER_ALERT_ISOLATE 2019-03-03 21:05:10 -08:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile xfrm: make xfrm modes builtin 2019-04-08 09:15:17 +02:00
mcast_snoop.c net: remove unneeded switch fall-through 2019-02-21 13:48:00 -08:00
mcast.c bridge: join all-snoopers multicast address 2019-01-22 17:18:08 -08:00
mip6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
ndisc.c ipv6: Make fib6_nh optional at the end of fib6_info 2019-05-24 13:26:44 -07:00
netfilter.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2019-02-18 11:38:30 -08:00
output_core.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
ping.c
proc.c net: dynamically allocate fqdir structures 2019-05-26 14:08:05 -07:00
protocol.c
raw.c ipv6: Consider sk_bound_dev_if when binding a raw socket to an address 2019-05-21 13:12:39 -07:00
reassembly.c inet: frags: call inet_frags_fini() after unregister_pernet_subsys() 2019-05-28 17:22:15 -07:00
route.c ipv6: Refactor ip6_route_del for cached routes 2019-05-24 13:26:44 -07:00
seg6_hmac.c
seg6_iptunnel.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
seg6_local.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
seg6.c genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
sit.c vrf: sit mtu should not be updated when vrf netdev is the link 2019-05-07 12:19:19 -07:00
syncookies.c
sysctl_net_ipv6.c
tcp_ipv6.c net: use indirect calls helpers at early demux stage 2019-05-05 10:38:04 -07:00
tcpv6_offload.c net: use indirect call wrappers at GRO transport layer 2018-12-15 13:23:02 -08:00
tunnel6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
udp_impl.h udp6: add missing rehash callback to udplite 2019-01-17 15:01:08 -08:00
udp_offload.c net: use indirect call wrappers at GRO transport layer 2018-12-15 13:23:02 -08:00
udp.c net: use indirect calls helpers at early demux stage 2019-05-05 10:38:04 -07:00
udplite.c udp6: add missing rehash callback to udplite 2019-01-17 15:01:08 -08:00
xfrm6_input.c net: use skb_sec_path helper in more places 2018-12-19 11:21:37 -08:00
xfrm6_output.c xfrm: store xfrm_mode directly, not its address 2019-04-08 09:15:28 +02:00
xfrm6_policy.c xfrm: remove decode_session indirection from afinfo_policy 2019-04-23 07:42:20 +02:00
xfrm6_protocol.c xfrm: remove unneeded export_symbols 2019-04-23 07:42:20 +02:00
xfrm6_state.c
xfrm6_tunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00