kernel_optimize_test/net/dsa
Vladimir Oltean e8d67fa569 net: dsa: sja1105: Don't store frame type in skb->cb
Due to a confusion I thought that eth_type_trans() was called by the
network stack whereas it can actually be called by network drivers to
figure out the skb protocol and next packet_type handlers.

In light of the above, it is not safe to store the frame type from the
DSA tagger's .filter callback (first entry point on RX path), since GRO
is yet to be invoked on the received traffic.  Hence it is very likely
that the skb->cb will actually get overwritten between eth_type_trans()
and the actual DSA packet_type handler.

Of course, what this patch fixes is the actual overwriting of the
SJA1105_SKB_CB(skb)->type field from the GRO layer, which made all
frames be seen as SJA1105_FRAME_TYPE_NORMAL (0).

Fixes: 227d07a07e ("net: dsa: sja1105: Add support for traffic through standalone ports")
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31 14:27:27 -07:00
..
dsa_priv.h net: dsa: Add support for deferred xmit 2019-05-05 21:52:42 -07:00
dsa.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-07 17:22:09 -07:00
dsa2.c net: dsa: Allow drivers to filter packets they can decode source port from 2019-05-05 21:52:42 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile net: dsa: sja1105: Add support for traffic through standalone ports 2019-05-05 21:52:42 -07:00
master.c
port.c net: dsa: Export symbols for dsa_port_vid_{add, del} 2019-05-05 21:52:42 -07:00
slave.c net: dsa: Initialize DSA_SKB_CB(skb)->deferred_xmit variable 2019-05-12 13:19:46 -07:00
switch.c net: dsa: Unset vlan_filtering when ports leave the bridge 2019-04-30 23:05:28 -04:00
tag_8021q.c net: dsa: tag_8021q: Create a stable binary format 2019-05-30 14:47:14 -07:00
tag_brcm.c dsa: tag_brcm: Fix build error without CONFIG_NET_DSA_TAG_BRCM_PREPEND 2019-05-10 15:06:45 -07:00
tag_dsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_edsa.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_gswip.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_ksz.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_lan9303.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_mtk.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_qca.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00
tag_sja1105.c net: dsa: sja1105: Don't store frame type in skb->cb 2019-05-31 14:27:27 -07:00
tag_trailer.c dsa: Cleanup unneeded table and make tag structures static 2019-04-28 19:41:01 -04:00