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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/net/ipv4
История
Nicolas Dichtel 82612de1c9 ip_tunnel: restore binding to ifaces with a large mtu 
After commit f6cc9c054e, the following conf is broken (note that the
default loopback mtu is 65536, ie IP_MAX_MTU + 1):

$ ip tunnel add gre1 mode gre local 10.125.0.1 remote 10.125.0.2 dev lo
add tunnel "gre0" failed: Invalid argument
$ ip l a type dummy
$ ip l s dummy1 up
$ ip l s dummy1 mtu 65535
$ ip tunnel add gre1 mode gre local 10.125.0.1 remote 10.125.0.2 dev dummy1
add tunnel "gre0" failed: Invalid argument

dev_set_mtu() doesn't allow to set a mtu which is too large.
First, let's cap the mtu returned by ip_tunnel_bind_dev(). Second, remove
the magic value 0xFFF8 and use IP_MAX_MTU instead.
0xFFF8 seems to be there for ages, I don't know why this value was used.

With a recent kernel, it's also possible to set a mtu > IP_MAX_MTU:
$ ip l s dummy1 mtu 66000
After that patch, it's also possible to bind an ip tunnel on that kind of
interface.

CC: Petr Machata <petrm@mellanox.com>
CC: Ido Schimmel <idosch@mellanox.com>
Link: https://git.kernel.org/pub/scm/linux/kernel/git/davem/netdev-vger-cvs.git/commit/?id=e5afd356a411a
Fixes: f6cc9c054e ("ip_tunnel: Emit events for post-register MTU changes")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-06-01 13:56:29 -04:00
..
netfilter net/ipv4: Initialize proto and ports in flow struct 2018-05-17 14:55:21 -04:00
Kconfig ipmr,ipmr6: Define a uniform vif_device 2018-03-01 13:13:23 -05:00
Makefile ipmr,ipmr6: Define a uniform vif_device 2018-03-01 13:13:23 -05:00
af_inet.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
ah4.c
…
arp.c arp: fix arp_filter on l3slave devices 2018-04-05 22:05:03 -04:00
cipso_ipv4.c
…
datagram.c
…
devinet.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
esp4.c esp4: remove redundant initialization of pointer esph 2018-02-13 13:59:03 +01:00
esp4_offload.c esp: check the NETIF_F_HW_ESP_TX_CSUM bit before segmenting 2018-02-27 10:46:01 +01:00
fib_frontend.c net: ipv4: add missing RTA_TABLE to rtm_ipv4_policy 2018-05-23 15:03:28 -04:00
fib_lookup.h
…
fib_notifier.c
…
fib_rules.c ipv6: route: dissect flow in input path if fib rules need it 2018-02-28 22:44:44 -05:00
fib_semantics.c route: check sysctl_fib_multipath_use_neigh earlier than hash 2018-04-01 20:57:39 -04:00
fib_trie.c net/ipv4: Allow notifier to fail route replace 2018-03-29 14:10:30 -04:00
fou.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
gre_demux.c
…
gre_offload.c
…
icmp.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
igmp.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
inet_connection_sock.c Revert "defer call to mem_cgroup_sk_alloc()" 2018-02-02 19:49:31 -05:00
inet_diag.c sock_diag: request _diag module only when the family or proto has been registered 2018-03-12 11:03:42 -04:00
inet_fragment.c inet: frags: remove inet_frag_maybe_warn_overflow() 2018-03-31 23:25:39 -04:00
inet_hashtables.c inet: Avoid unitialized variable warning in inet_unhash() 2018-02-01 09:48:42 -05:00
inet_timewait_sock.c soreuseport: initialise timewait reuseport field 2018-04-07 22:32:32 -04:00
inetpeer.c inetpeer: fix uninit-value in inet_getpeer 2018-04-09 10:57:35 -04:00
ip_forward.c net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len 2018-03-04 17:49:17 -05:00
ip_fragment.c inet: frags: fix ip6frag_low_thresh boundary 2018-04-04 12:04:59 -04:00
ip_gre.c erspan: fix invalid erspan version. 2018-05-17 15:48:49 -04:00
ip_input.c net: Make ip_ra_chain per struct net 2018-03-22 15:12:56 -04:00
ip_options.c
…
ip_output.c net: test tailroom before appending to linear skb 2018-05-17 17:05:01 -04:00
ip_sockglue.c ipv4: remove warning in ip_recv_error 2018-05-24 22:16:57 -04:00
ip_tunnel.c ip_tunnel: restore binding to ifaces with a large mtu 2018-06-01 13:56:29 -04:00
ip_tunnel_core.c
…
ip_vti.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ipcomp.c
…
ipconfig.c net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
ipip.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ipmr.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ipmr_base.c ipmr: properly check rhltable_init() return value 2018-05-22 15:31:15 -04:00
netfilter.c
…
ping.c ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg 2018-05-11 12:00:58 -04:00
proc.c inet: frags: break the 2GB limit for frags storage 2018-03-31 23:25:39 -04:00
protocol.c
…
raw.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
raw_diag.c
…
route.c net/ipv4: Initialize proto and ports in flow struct 2018-05-17 14:55:21 -04:00
syncookies.c net/ipv4: disable SMC TCP option with SYN Cookies 2018-03-25 20:53:54 -04:00
sysctl_net_ipv4.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
tcp.c tcp: restore autocorking 2018-05-03 11:28:50 -04:00
tcp_bbr.c tcp_bbr: fix to zero idle_restart only upon S/ACKed data 2018-05-02 11:12:32 -04:00
tcp_bic.c
…
tcp_cdg.c
…
tcp_cong.c
…
tcp_cubic.c
…
tcp_dctcp.c
…
tcp_diag.c
…
tcp_fastopen.c
…
tcp_highspeed.c
…
tcp_htcp.c
…
tcp_hybla.c
…
tcp_illinois.c net/tcp/illinois: replace broken algorithm reference link 2018-02-28 12:03:47 -05:00
tcp_input.c tcp: don't read out-of-bounds opsize 2018-04-23 09:51:06 -04:00
tcp_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
tcp_lp.c
…
tcp_metrics.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
tcp_minisocks.c crypto : chtls - CPL handler definition 2018-03-31 23:37:32 -04:00
tcp_nv.c tcp_nv: fix potential integer overflow in tcpnv_acked 2018-01-31 10:26:30 -05:00
tcp_offload.c
…
tcp_output.c tcp: purge write queue in tcp_connect_init() 2018-05-16 12:18:00 -04:00
tcp_rate.c
…
tcp_recovery.c
…
tcp_scalable.c
…
tcp_timer.c tcp: purge write queue upon aborting the connection 2018-03-07 15:01:03 -05:00
tcp_ulp.c net: add a UID to use for ULP socket assignment 2018-02-06 11:39:31 +01:00
tcp_vegas.c
…
tcp_vegas.h
…
tcp_veno.c
…
tcp_westwood.c
…
tcp_yeah.c
…
tunnel4.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
udp.c ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg 2018-05-11 12:00:58 -04:00
udp_diag.c
…
udp_impl.h
…
udp_offload.c
…
udp_tunnel.c
…
udplite.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
xfrm4_input.c
…
xfrm4_mode_beet.c
…
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto 2018-03-07 10:54:29 +01:00
xfrm4_output.c net: xfrm: use skb_gso_validate_network_len() to check gso sizes 2018-03-04 17:49:17 -05:00
xfrm4_policy.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
xfrm4_protocol.c
…
xfrm4_state.c
…
xfrm4_tunnel.c
…