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a54fc09e4c
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Vladimir Oltean a54fc09e4c net/sched: taprio: allow user input of per-tc max SDU 
IEEE 802.1Q clause 12.29.1.1 "The queueMaxSDUTable structure and data
types" and 8.6.8.4 "Enhancements for scheduled traffic" talk about the
existence of a per traffic class limitation of maximum frame sizes, with
a fallback on the port-based MTU.

As far as I am able to understand, the 802.1Q Service Data Unit (SDU)
represents the MAC Service Data Unit (MSDU, i.e. L2 payload), excluding
any number of prepended VLAN headers which may be otherwise present in
the MSDU. Therefore, the queueMaxSDU is directly comparable to the
device MTU (1500 means L2 payload sizes are accepted, or frame sizes of
1518 octets, or 1522 plus one VLAN header). Drivers which offload this
are directly responsible of translating into other units of measurement.

To keep the fast path checks optimized, we keep 2 arrays in the qdisc,
one for max_sdu translated into frame length (so that it's comparable to
skb->len), and another for offloading and for dumping back to the user.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-29 18:52:05 -07:00
..
6lowpan
9p iov_iter stuff, part 2, rebased 2022-08-08 20:04:35 -07:00
802
8021q net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
appletalk
atm
ax25 ax25: move from strlcpy with unused retval to strscpy 2022-08-22 17:55:50 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
bluetooth Bluetooth: hci_sync: Fix hci_read_buffer_size_sync 2022-09-02 14:01:28 -07:00
bpf bpf, test_run: Propagate bpf_flow_dissect's retval to user's bpf_attr.test.retval 2022-08-23 22:48:03 +02:00
bpfilter
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
caif caif: move from strlcpy with unused retval to strscpy 2022-08-22 17:57:35 -07:00
can can: bcm: check the result of can_send() in bcm_can_tx() 2022-09-23 13:53:10 +02:00
ceph libceph: clean up ceph_osdc_start_request prototype 2022-08-03 14:05:39 +02:00
core net: skb: introduce and use a single page frag cache 2022-09-29 18:48:15 -07:00
dcb
dccp tcp: Introduce optional per-netns ehash. 2022-09-20 10:21:50 -07:00
dns_resolver
dsa net: dsa: make user ports return to init_net on netns deletion 2022-09-26 11:28:57 -07:00
ethernet net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
ethtool net: phy: Add support for rate matching 2022-09-23 11:55:35 +01:00
hsr genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
ife
ipv4 net: Fix incorrect address comparison when searching for a bind2 bucket 2022-09-28 18:52:17 -07:00
ipv6 net: shrink struct ubuf_info 2022-09-28 18:51:25 -07:00
iucv net: keep sk->sk_forward_alloc as small as possible 2022-06-10 16:21:27 -07:00
kcm kcm: fix strp_init() order and cleanup 2022-08-31 12:16:44 -07:00
key Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2022-08-24 12:51:50 +01:00
l2tp genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
l3mdev
lapb
llc
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
mac802154 net: mac802154: Fix a condition in the receive path 2022-08-29 11:10:22 +02:00
mctp
mpls net: Use u64_stats_fetch_begin_irq() for stats fetch. 2022-08-29 13:02:27 +01:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
ncsi genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
netlabel genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netlink netlink: Bounds-check struct nlmsgerr creation 2022-09-05 14:45:22 +01:00
netrom
nfc NFC: hci: Split memcpy() of struct hcp_message flexible array 2022-09-27 07:45:18 -07:00
nsh
openvswitch net: openvswitch: allow conntrack in non-initial user namespace 2022-09-27 11:31:36 +02:00
packet net/af_packet: registration process optimization in packet_init() 2022-09-21 12:59:22 +01:00
phonet
psample genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
qrtr net: qrtr: start MHI channel after endpoit creation 2022-08-15 11:21:42 +01:00
rds net: rds: add missing __init/__exit annotations to module init/exit funcs 2022-09-19 17:58:53 -07:00
rfkill
rose rose: check NULL rose_loopback_neigh->loopback 2022-08-22 14:24:54 +01:00
rxrpc rxrpc: remove rxrpc_max_call_lifetime declaration 2022-09-19 17:58:47 -07:00
sched net/sched: taprio: allow user input of per-tc max SDU 2022-09-29 18:52:05 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-07-28 18:21:16 -07:00
smc net/smc: Support SO_REUSEPORT 2022-09-27 10:26:17 +02:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc NFS client bugfixes for Linux 6.0 2022-09-12 17:53:46 -04:00
switchdev
tipc net/tipc: Remove unused struct distr_queue_item 2022-09-29 18:48:32 -07:00
tls net: tls: Add ARIA-GCM algorithm 2022-09-27 17:29:09 -07:00
unix af_unix: Refactor unix_read_skb() 2022-09-26 11:00:19 -07:00
vmw_vsock vsock/vmci: fix repeated words in comments 2022-09-16 09:31:29 +01:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
x25 net/x25: fix call timeouts in blocking connects 2022-08-08 20:48:51 -07:00
xdp xsk: Fix corrupted packets for XDP_SHARED_UMEM 2022-08-15 17:26:07 +02:00
xfrm net: Fix data-races around netdev_max_backlog. 2022-08-24 13:46:57 +01:00
compat.c net: clear msg_get_inq in __get_compat_msghdr() 2022-09-20 08:23:20 -07:00
devres.c
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
socket.c net: Fix a data-race around sysctl_somaxconn. 2022-08-24 13:46:58 +01:00
sysctl_net.c