linux/net/core
Vladimir Oltean 4e50025129 net: dsa: generalize overhead for taggers that use both headers and trailers
Some really really weird switches just couldn't decide whether to use a
normal or a tail tagger, so they just did both.

This creates problems for DSA, because we only have the concept of an
'overhead' which can be applied to the headroom or to the tailroom of
the skb (like for example during the central TX reallocation procedure),
depending on the value of bool tail_tag, but not to both.

We need to generalize DSA to cater for these odd switches by
transforming the 'overhead / tail_tag' pair into 'needed_headroom /
needed_tailroom'.

The DSA master's MTU is increased to account for both.

The flow dissector code is modified such that it only calls the DSA
adjustment callback if the tagger has a non-zero header length.

Taggers are trivially modified to declare either needed_headroom or
needed_tailroom, based on the tail_tag value that they currently
declare.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-11 12:45:38 -07:00
..
bpf_sk_storage.c bpf: Use struct_size() in kzalloc() 2021-05-13 15:58:00 -07:00
datagram.c udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-04 18:56:56 -08:00
datagram.h
dev_addr_lists.c net: core: Correct function name dev_uc_flush() in the kerneldoc 2021-03-28 17:56:56 -07:00
dev_ioctl.c net: fix dev_ifsioc_locked() race condition 2021-02-11 18:14:19 -08:00
dev.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-05-27 09:55:10 -07:00
devlink.c devlink: Fix error message in devlink_rate_set_ops_supported() 2021-06-09 14:12:30 -07:00
drop_monitor.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-25 15:31:22 -07:00
dst_cache.c
dst.c net, bpf: Fix ip6ip6 crash with collect_md populated skbs 2021-03-10 12:24:18 -08:00
failover.c
fib_notifier.c
fib_rules.c fib: Return the correct errno code 2021-06-03 15:13:56 -07:00
filter.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-05-27 09:55:10 -07:00
flow_dissector.c net: dsa: generalize overhead for taggers that use both headers and trailers 2021-06-11 12:45:38 -07:00
flow_offload.c net: flow_offload: Fix memory leak for indirect flow block 2020-12-09 16:08:33 -08:00
gen_estimator.c net_sched: gen_estimator: support large ewma log 2021-01-15 18:11:06 -08:00
gen_stats.c docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c net: Add IF_OPER_TESTING 2020-04-20 12:43:24 -07:00
lwt_bpf.c lwt_bpf: Replace preempt_disable() with migrate_disable() 2020-12-07 11:53:40 -08:00
lwtunnel.c net: ipv6: add rpl sr tunnel 2020-03-29 22:30:57 -07:00
Makefile net: selftest: fix build issue if INET is disabled 2021-04-28 14:06:45 -07:00
neighbour.c neighbour: Remove redundant initialization of 'bucket' 2021-05-10 14:25:13 -07:00
net_namespace.c net: initialize net->net_cookie at netns setup 2021-02-11 14:10:07 -08:00
net-procfs.c net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h 2021-03-22 13:14:45 -07:00
net-sysfs.c net-sysfs: remove possible sleep from an RCU read-side critical section 2021-03-22 13:28:13 -07:00
net-sysfs.h
net-traces.c tcp: add tracepoint for checksum errors 2021-05-14 15:26:03 -07:00
netclassid_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netpoll.c netpoll: don't require irqs disabled in rt kernels 2021-06-01 15:15:11 -07:00
netprio_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
page_pool.c page_pool: Allow drivers to hint on SKB recycling 2021-06-07 14:11:47 -07:00
pktgen.c pktgen: add pktgen_handle_all_threads() for the same code 2021-06-07 13:15:31 -07:00
ptp_classifier.c ptp: Add generic ptp v2 header parsing function 2020-08-19 16:07:49 -07:00
request_sock.c
rtnetlink.c Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2021-06-07 13:01:52 -07:00
scm.c scm: fix a typo in put_cmsg() 2021-04-16 11:41:07 -07:00
secure_seq.c crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h 2020-05-08 15:32:17 +10:00
selftests.c net: add generic selftest support 2021-04-20 16:08:02 -07:00
skbuff.c page_pool: Allow drivers to hint on SKB recycling 2021-06-07 14:11:47 -07:00
skmsg.c skmsg: Remove unused parameters of sk_msg_wait_data() 2021-05-18 16:44:19 +02:00
sock_diag.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
sock_map.c sock_map: Fix a potential use-after-free in sock_map_close() 2021-04-12 17:35:26 +02:00
sock_reuseport.c udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-08 19:15:40 -08:00
sock.c Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2021-06-07 13:01:52 -07:00
stream.c
sysctl_net_core.c net: change netdev_unregister_timeout_secs min value to 1 2021-03-25 17:24:06 -07:00
timestamping.c
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c
xdp.c xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model 2021-03-31 15:15:23 -07:00