Eric Dumazet 58a4782449 ipv6: sit: update mtu check to take care of gso packets ... While testing my changes for TSO support in SIT devices, I was using sit0 tunnel which appears to include nopmtudisc flag. But using : ip tun add sittun mode sit remote $REMOTE_IPV4 local $LOCAL_IPV4 \ dev $IFACE We get a tunnel which rejects too long packets because of the mtu check which is not yet GSO aware. erd:~# ip tunnel sittun: ipv6/ip remote 10.246.17.84 local 10.246.17.83 ttl inherit 6rd-prefix 2002::/16 sit0: ipv6/ip remote any local any ttl 64 nopmtudisc 6rd-prefix 2002::/16 This patch is based on an excellent report from Michal Shmidt. In the future, we probably want to extend the MTU check to do the right thing for GSO packets... Fixes: ("61c1db7fae21 ipv6: sit: add GSO/TSO support") Reported-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-12-18 17:55:24 -05:00
..
netfilter	netfilter: SYNPROXY target: restrict to INPUT/FORWARD	2013-12-11 11:30:25 +01:00
Kconfig	ipv6: Remove privacy config option.	2013-10-28 20:07:50 -04:00
Makefile	ipv6: Add support for IPsec virtual tunnel interfaces	2013-10-10 12:00:01 +02:00
addrconf.c	ipv6: fix third arg of anycast_dst_alloc(), must be bool.	2013-12-02 17:13:25 -05:00
addrconf_core.c	ipv6: move in6_dev_finish_destroy() into core kernel	2013-08-31 22:30:00 -04:00
addrlabel.c	ipv6: fix null pointer dereference in __ip6addrlbl_add	2013-09-04 14:14:53 -04:00
af_inet6.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-11-19 15:50:47 -08:00
ah6.c	ipsec: Don't update the pmtu on ICMPV6_DEST_UNREACH	2013-09-16 09:45:32 +02:00
anycast.c	net: proc: change proc_net_remove to remove_proc_entry	2013-02-18 14:53:08 -05:00
datagram.c	ipv6: do not erase dst address with flow label destination	2013-12-10 22:51:00 -05:00
esp6.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2013-11-02 02:13:48 -04:00
exthdrs.c	ipv6/exthdrs: accept tlv which includes only padding	2013-09-11 15:52:27 -04:00
exthdrs_core.c	ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header	2013-05-28 23:49:07 -07:00
exthdrs_offload.c	…
fib6_rules.c	inet: fix NULL pointer Oops in fib(6)_rule_suppress	2013-12-10 17:54:23 -05:00
icmp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-09-05 14:58:52 -04:00
inet6_connection_sock.c	inet: rename ir_loc_port to ir_num	2013-10-10 14:37:35 -04:00
inet6_hashtables.c	inet: convert inet_ehash_secret and ipv6_hash_secret to net_get_random_once	2013-10-19 19:45:35 -04:00
ip6_checksum.c	ipv6: move csum_ipv6_magic() and udp6_csum_init() into static library	2013-01-08 17:56:10 -08:00
ip6_fib.c	ipv6: compare sernum when walking fib for /proc/net/ipv6_route as safety net	2013-09-27 17:32:17 -04:00
ip6_flowlabel.c	ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh	2013-11-11 01:25:28 -05:00
ip6_gre.c	net: Explicitly initialize u64_stats_sync structures for lockdep	2013-11-06 12:40:25 +01:00
ip6_icmp.c	ipv6: Kill ipv6 dependency of icmpv6_send().	2013-04-29 13:54:36 -04:00
ip6_input.c	net: add SNMP counters tracking incoming ECN bits	2013-08-08 22:24:59 -07:00
ip6_offload.c	ipv6: sit: add GSO/TSO support	2013-10-21 18:49:39 -04:00
ip6_offload.h	…
ip6_output.c	ipv6: pmtudisc setting not respected with UFO/CORK	2013-12-18 17:52:15 -05:00
ip6_tunnel.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-11-19 15:50:47 -08:00
ip6_vti.c	ipv6: Add support for IPsec virtual tunnel interfaces	2013-10-10 12:00:01 +02:00
ip6mr.c	tunnels: harmonize cleanup done on skb on rx path	2013-09-04 00:27:26 -04:00
ipcomp6.c	ipsec: Don't update the pmtu on ICMPV6_DEST_UNREACH	2013-09-16 09:45:32 +02:00
ipv6_sockglue.c	ipv6: enable IPV6_FLOWLABEL_MGR for getsockopt	2013-11-08 13:42:57 -05:00
mcast.c	ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put	2013-09-30 22:28:58 -07:00
mip6.c	ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header	2013-05-28 23:49:07 -07:00
ndisc.c	ipv6: judge the accept_ra_defrtr before calling rt6_route_rcv	2013-12-02 16:00:38 -05:00
netfilter.c	netfilter: add nf_ipv6_ops hook to fix xt_addrtype with IPv6	2013-05-23 11:58:55 +02:00
output_core.c	ipv6: move ip6_local_out into core kernel	2013-08-31 22:30:00 -04:00
ping.c	inet: fix addr_len/msg->msg_namelen assignment in recv_error and rxpmtu functions	2013-11-23 14:46:23 -08:00
proc.c	net: add SNMP counters tracking incoming ECN bits	2013-08-08 22:24:59 -07:00
protocol.c	net: remove outdated comment for ipv4 and ipv6 protocol handler	2013-11-28 18:47:51 -05:00
raw.c	ipv6: do not erase dst address with flow label destination	2013-12-10 22:51:00 -05:00
reassembly.c	ipv6: split inet6_hash_frag for netfilter and initialize secrets with net_get_random_once	2013-10-23 17:01:40 -04:00
route.c	ipv6: don't count addrconf generated routes against gc limit	2013-12-09 21:00:39 -05:00
sit.c	ipv6: sit: update mtu check to take care of gso packets	2013-12-18 17:55:24 -05:00
syncookies.c	inet: split syncookie keys for ipv4 and ipv6 and initialize with net_get_random_once	2013-10-19 19:45:35 -04:00
sysctl_net_ipv6.c	net: Convert uses of typedef ctl_table to struct ctl_table	2013-06-13 02:36:09 -07:00
tcp_ipv6.c	ipv6: do not erase dst address with flow label destination	2013-12-10 22:51:00 -05:00
tcpv6_offload.c	gro: Clean up tcpX_gro_receive checksum verification	2013-11-23 14:46:19 -08:00
tunnel6.c	…
udp.c	ipv6: do not erase dst address with flow label destination	2013-12-10 22:51:00 -05:00
udp_impl.h	net: ipv4/ipv6: Remove extern from function prototypes	2013-10-19 19:12:11 -04:00
udp_offload.c	ipv6: fix headroom calculation in udp6_ufo_fragment	2013-11-05 22:09:53 -05:00
udplite.c	ipv6: do not clear pinet6 field	2013-05-11 16:26:38 -07:00
xfrm6_input.c	…
xfrm6_mode_beet.c	…
xfrm6_mode_ro.c	…
xfrm6_mode_transport.c	…
xfrm6_mode_tunnel.c	ipv6: Add a receive path hook for vti6 in xfrm6_mode_tunnel.	2013-10-09 13:16:36 +02:00
xfrm6_output.c	xfrm: revert ipv4 mtu determination to dst_mtu	2013-08-26 12:40:53 +02:00
xfrm6_policy.c	xfrm: Fix null pointer dereference when decoding sessions	2013-11-01 07:08:46 +01:00
xfrm6_state.c	xfrm: make local error reporting more robust	2013-08-14 13:07:12 +02:00
xfrm6_tunnel.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00