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linux-stable/net/batman-adv
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Sven Eckelmann 556487f97f batman-adv: Don't always reallocate the fragmentation skb head 
commit 992b03b88e upstream.

When a packet is fragmented by batman-adv, the original batman-adv header
is not modified. Only a new fragmentation is inserted between the original
one and the ethernet header. The code must therefore make sure that it has
a writable region of this size in the skbuff head.

But it is not useful to always reallocate the skbuff by this size even when
there would be more than enough headroom still in the skb. The reallocation
is just to costly during in this codepath.

Fixes: ee75ed8887 ("batman-adv: Fragment and send skbs larger than mtu")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26 11:40:41 +01:00
..
bat_algo.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_algo.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_iv_ogm.c batman-adv: Avoid WARN_ON timing related checks 2021-06-30 08:48:48 -04:00
bat_iv_ogm.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v.c batman-adv: Fix check of retrieved orig_gw in batadv_v_gw_is_eligible 2020-03-20 10:54:21 +01:00
bat_v.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v_elp.c batman-adv: Use explicit tvlv padding for ELP packets 2018-12-13 09:18:46 +01:00
bat_v_elp.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bat_v_ogm.c batman-adv: Fix own OGM check in aggregated OGMs 2020-09-09 19:03:07 +02:00
bat_v_ogm.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bitarray.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bitarray.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
bridge_loop_avoidance.c batman-adv: mcast: fix duplicate mcast packets from BLA backbone to mesh 2021-11-26 11:40:41 +01:00
bridge_loop_avoidance.h batman-adv: mcast: fix duplicate mcast packets in BLA backbone from mesh 2020-10-01 13:12:51 +02:00
debugfs.c batman-adv: Fix debugfs path for renamed softif 2020-03-20 10:54:22 +01:00
debugfs.h batman-adv: Fix debugfs path for renamed softif 2020-03-20 10:54:22 +01:00
distributed-arp-table.c batman-adv: Fix DAT candidate selection on little endian systems 2020-01-23 08:20:34 +01:00
distributed-arp-table.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
fragmentation.c batman-adv: Don't always reallocate the fragmentation skb head 2021-11-26 11:40:41 +01:00
fragmentation.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
gateway_client.c batman-adv: Avoid uninitialized chaddr when handling DHCP 2020-09-09 19:03:07 +02:00
gateway_client.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
gateway_common.c Here are two batman-adv bugfixes: 2017-03-16 12:05:38 -07:00
gateway_common.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hard-interface.c batman-adv: Consider fragmentation for needed_headroom 2021-11-26 11:40:41 +01:00
hard-interface.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hash.c batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
hash.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
icmp_socket.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
icmp_socket.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
Kconfig
log.c batman-adv: set .owner to THIS_MODULE 2020-12-02 08:34:42 +01:00
log.h batman-adv: Fix possible side-effects in _batadv_dbg 2017-03-16 21:14:52 +01:00
main.c net: batman-adv: fix error handling 2021-11-02 18:25:12 +01:00
main.h batman-adv: Start new development cycle 2017-07-29 09:51:25 +02:00
Makefile batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
multicast.c batman-adv: mcast: fix duplicate mcast packets in BLA backbone from LAN 2021-11-26 11:40:41 +01:00
multicast.h batman-adv: mcast: fix duplicate mcast packets in BLA backbone from LAN 2021-11-26 11:40:41 +01:00
netlink.c batman-adv: fix uninit-value in batadv_netlink_get_ifindex() 2019-09-16 08:20:45 +02:00
netlink.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
network-coding.c net: batman-adv: fix error handling 2021-11-02 18:25:12 +01:00
network-coding.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
originator.c batman-adv: Fix internal interface indices types 2020-03-20 10:54:21 +01:00
originator.h batman-adv: Fix internal interface indices types 2020-03-20 10:54:21 +01:00
packet.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
routing.c batman-adv: mcast/TT: fix wrongly dropped or rerouted packets 2020-10-01 13:12:50 +02:00
routing.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
send.c batman-adv: fix various spelling mistakes 2017-07-29 09:51:28 +02:00
send.h batman-adv: restructure rebroadcast counter into forw_packet API 2017-03-26 12:46:44 +02:00
soft-interface.c batman-adv: mcast: fix duplicate mcast packets in BLA backbone from LAN 2021-11-26 11:40:41 +01:00
soft-interface.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
sysfs.c batman-adv: Fix refcnt leak in batadv_store_throughput_override 2020-05-20 08:16:59 +02:00
sysfs.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
tp_meter.c networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
tp_meter.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
translation-table.c net: batman-adv: fix error handling 2021-11-02 18:25:12 +01:00
translation-table.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
tvlv.c batman-adv: Prevent duplicated tvlv handler 2018-10-20 09:48:49 +02:00
tvlv.h batman-adv: update copyright years for 2017 2017-01-26 08:34:19 +01:00
types.h batman-adv: Avoid free/alloc race when handling OGM buffer 2020-03-20 10:54:22 +01:00