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Vladimir Oltean f5e165e72b net: dsa: track unique bridge numbers across all DSA switch trees 
Right now, cross-tree bridging setups work somewhat by mistake.

In the case of cross-tree bridging with sja1105, all switch instances
need to agree upon a common VLAN ID for forwarding a packet that belongs
to a certain bridging domain.

With TX forwarding offload, the VLAN ID is the bridge VLAN for
VLAN-aware bridging, and the tag_8021q TX forwarding offload VID
(a VLAN which has non-zero VBID bits) for VLAN-unaware bridging.

The VBID for VLAN-unaware bridging is derived from the dp->bridge_num
value calculated by DSA independently for each switch tree.

If ports from one tree join one bridge, and ports from another tree join
another bridge, DSA will assign them the same bridge_num, even though
the bridges are different. If cross-tree bridging is supported, this
is an issue.

Modify DSA to calculate the bridge_num globally across all switch trees.
This has the implication for a driver that the dp->bridge_num value that
DSA will assign to its ports might not be contiguous, if there are
boards with multiple DSA drivers instantiated. Additionally, all
bridge_num values eat up towards each switch's
ds->num_fwd_offloading_bridges maximum, which is potentially unfortunate,
and can be seen as a limitation introduced by this patch. However, that
is the lesser evil for now.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2021-08-23 11:52:31 +01:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-07-22 16:19:03 +02:00
9p 9p/trans_virtio: Fix spelling mistakes 2021-06-02 14:01:55 -07:00
802 net: 802: remove dead leftover after ipx driver removal 2021-08-13 16:30:35 -07:00
8021q dev_ioctl: split out ndo_eth_ioctl 2021-07-27 20:11:45 +01:00
appletalk net: socket: rework compat_ifreq_ioctl() 2021-07-23 14:20:25 +01:00
atm atm: Use list_for_each_entry() to simplify code in resources.c 2021-06-10 14:08:09 -07:00
ax25 ax25: use skb_expand_head 2021-08-03 11:21:39 +01:00
batman-adv batman-adv: bcast: remove remaining skb-copy calls 2021-08-18 18:39:00 +02:00
bluetooth bluetooth-next pull request for net-next: 2021-08-20 12:16:05 +01:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
bridge net: bridge: vlan: convert mcast router global option to per-vlan entry 2021-08-20 15:00:35 +01:00
caif net: fix uninit-value in caif_seqpkt_sendmsg 2021-07-15 11:08:33 -07:00
can net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
ceph Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
core net: Fix offloading indirect devices dependency on qdisc order creation 2021-08-19 13:19:30 +01:00
dcb net: dcb: Return the correct errno code 2021-06-01 17:01:33 -07:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
decnet net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
dns_resolver net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
dsa net: dsa: track unique bridge numbers across all DSA switch trees 2021-08-23 11:52:31 +01:00
ethernet move netdev_boot_setup into Space.c 2021-08-03 13:05:26 +01:00
ethtool ethtool: return error from ethnl_ops_begin if dev is NULL 2021-08-06 10:39:04 +01:00
hsr net: hsr: don't check sequence number if tag removal is offloaded 2021-06-16 12:13:01 -07:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
ife net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
ipv4 net-memcg: pass in gfp_t mask to mem_cgroup_charge_skmem() 2021-08-18 11:39:44 +01:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2021-08-11 10:22:26 +01:00
iucv net/iucv: Replace deprecated CPU-hotplug functions. 2021-08-09 10:13:32 +01:00
kcm net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
key net: Remove unnecessary variables 2021-05-26 07:03:39 +02:00
l2tp l2tp: Fix spelling mistakes 2021-06-07 14:08:30 -07:00
l3mdev l3mdev: Correct function names in the kerneldoc comments 2021-03-28 17:56:55 -07:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
mac80211 Minor updates: 2021-08-20 10:09:22 -07:00
mac802154 net: mac802154: Fix general protection fault 2021-04-06 22:42:16 +02:00
mctp mctp: Specify route types, require rtm_type in RTM_*ROUTE messages 2021-08-11 16:01:17 -07:00
mpls mpls: defer ttl decrement in mpls_forward() 2021-07-23 17:17:56 +01:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-19 18:09:18 -07:00
ncsi net/ncsi: add dummy response handler for Intel boards 2021-07-08 14:16:39 -07:00
netfilter net: Fix offloading indirect devices dependency on qdisc order creation 2021-08-19 13:19:30 +01:00
netlabel net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
netlink net: netlink: Remove unused function 2021-07-30 18:35:47 +02:00
netrom net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
nfc net: in_irq() cleanup 2021-08-13 14:09:19 -07:00
nsh
…
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-19 18:09:18 -07:00
packet net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
phonet net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
psample psample: Add additional metadata attributes 2021-03-14 15:00:43 -07:00
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-05 15:08:47 -07:00
rds net/rds: dma_map_sg is entitled to merge entries 2021-08-18 15:35:50 -07:00
rfkill Another set of updates, all over the map: 2021-04-20 16:44:04 -07:00
rose net: rose: Fix fall-through warnings for Clang 2021-03-10 12:45:15 -08:00
rxrpc net: RxRPC: make dependent Kconfig symbols be shown indented 2021-08-18 10:12:11 +01:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-19 18:09:18 -07:00
sctp sctp: move the active_key update after sh_keys is added 2021-08-03 11:43:43 +01:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
strparser net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
sunrpc NFS client updates for Linux 5.14 2021-07-09 09:43:57 -07:00
switchdev net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge 2021-08-04 12:35:07 +01:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-19 18:09:18 -07:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
unix af_unix: check socket state when queuing OOB 2021-08-16 11:12:37 +01:00
vmw_vsock vsock/virtio: avoid potential deadlock when vsock device remove 2021-08-12 10:57:27 -07:00
wireless cfg80211: fix BSS color notify trace enum confusion 2021-08-18 09:21:52 +02:00
x25 net: x25: Use list_for_each_entry() to simplify code in x25_route.c 2021-06-10 14:08:09 -07:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2021-08-04 10:45:41 +01:00
Kconfig mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
Makefile mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
compat.c net: Return the correct errno code 2021-06-03 15:13:56 -07:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
socket.c mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00