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Jesper Dangaard Brouer c06ab09127 net_sched: restore "linklayer atm" handling 
[ Upstream commit 8a8e3d84b1 ]

commit 56b765b79 ("htb: improved accuracy at high rates")
broke the "linklayer atm" handling.

 tc class add ... htb rate X ceil Y linklayer atm

The linklayer setting is implemented by modifying the rate table
which is send to the kernel.  No direct parameter were
transferred to the kernel indicating the linklayer setting.

The commit 56b765b79 ("htb: improved accuracy at high rates")
removed the use of the rate table system.

To keep compatible with older iproute2 utils, this patch detects
the linklayer by parsing the rate table.  It also supports future
versions of iproute2 to send this linklayer parameter to the
kernel directly. This is done by using the __reserved field in
struct tc_ratespec, to convey the choosen linklayer option, but
only using the lower 4 bits of this field.

Linklayer detection is limited to speeds below 100Mbit/s, because
at high rates the rtab is gets too inaccurate, so bad that
several fields contain the same values, this resembling the ATM
detect.  Fields even start to contain "0" time to send, e.g. at
1000Mbit/s sending a 96 bytes packet cost "0", thus the rtab have
been more broken than we first realized.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-14 06:54:55 -07:00
..
9p 9p: turn fid->dlist into hlist 2013-02-27 22:51:08 -05:00
bluetooth Bluetooth: Fix mgmt handling of power on failures 2013-06-12 10:20:55 -04:00
caif caif: Remove my bouncing email address. 2013-04-23 13:25:51 -04:00
irda irda: small read past the end of array in debug code 2013-04-19 17:32:31 -04:00
iucv af_iucv: fix recvmsg by replacing skb_pull() function 2013-04-08 17:16:57 -04:00
netfilter netfilter: log: netns NULL ptr bug when calling from conntrack 2013-05-15 14:11:07 +02:00
netns netfilter: nf_log: prepare net namespace support for loggers 2013-04-05 20:12:54 +02:00
nfc NFC: RFKILL support 2013-04-12 16:54:45 +02:00
phonet net: remove my future former mail address 2012-06-17 16:29:38 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
tc_act
act_api.h act_police: move struct tcf_police to act_police.c 2013-02-12 18:59:45 -05:00
addrconf.h ipv6,mcast: always hold idev->lock before mca_lock 2013-07-28 16:29:49 -07:00
af_ieee802154.h
af_rxrpc.h
af_unix.h af_unix: fix a fatal race with bit fields 2013-05-01 15:13:49 -04:00
ah.h
arp.h net: Dont use ifindices in hash fns 2012-08-09 16:18:06 -07:00
atmclip.h atm: clip: Use device neigh support on top of "arp_tbl". 2011-11-30 18:51:03 -05:00
ax25.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
ax88796.h
cfg80211-wext.h
cfg80211.h cfg80211: introduce critical protocol indication from user-space 2013-04-22 15:48:00 +02:00
checksum.h net: core: add function for incremental IPv6 pseudo header checksum updates 2012-08-30 03:00:16 +02:00
cipso_ipv4.h cipso: handle CIPSO options correctly when NetLabel is disabled 2012-06-01 14:18:29 -04:00
cls_cgroup.h cls_cgroup: remove task_struct parameter from sock_update_classid() 2013-04-09 13:19:35 -04:00
codel.h codel: refine one condition to avoid a nul rec_inv_sqrt 2012-08-10 16:52:54 -07:00
compat.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
datalink.h
dcbevent.h
dcbnl.h net/dcb: Add an optional max rate attribute 2012-04-05 05:08:04 -04:00
dn.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
dn_dev.h
dn_fib.h decnet: Parse netlink attributes on our own 2013-03-22 10:31:16 -04:00
dn_neigh.h
dn_nsp.h
dn_route.h decnet: use correct RCU API to deref sk_dst_cache field 2013-01-28 00:15:27 -05:00
dsa.h dsa: Include linux/if_ether.h to fix build error 2011-12-01 11:41:06 -05:00
dsfield.h ipv6: Optimize ipv6_change_dsfield(). 2013-01-09 23:59:53 -08:00
dst.h Fix dst_neigh_lookup/dst_neigh_lookup_skb return value handling bug 2013-03-15 09:06:58 -04:00
dst_ops.h net: Fix warnings in dst_ops.h 2012-07-19 10:43:03 -07:00
esp.h
ethoc.h
fib_rules.h ipv4: Elide fib_validate_source() completely when possible. 2012-06-29 01:36:36 -07:00
firewire.h firewire net, ipv4 arp: Extend hardware address and remove driver-level packet inspection. 2013-03-26 12:32:13 -04:00
flow.h ipv4: Add FLOWI_FLAG_KNOWN_NH 2012-10-08 17:42:36 -04:00
flow_keys.h flow_keys: include thoff into flow_keys for later usage 2013-03-20 12:14:36 -04:00
garp.h
gen_stats.h
genetlink.h genl: Hold reference on correct module while netlink-dump. 2013-09-14 06:54:55 -07:00
gre.h GRE: Refactor GRE tunneling code. 2013-03-26 12:27:18 -04:00
gro_cells.h gro: Fix kcalloc argument order 2013-01-27 22:46:33 -05:00
icmp.h ipv4: fix error handling in icmp_protocol. 2013-02-22 15:10:18 -05:00
ieee80211_radiotap.h mac80211: support (partial) VHT radiotap information 2012-11-27 11:56:18 +01:00
ieee802154.h
ieee802154_netdev.h ieee802154/nl-mac.c: make some MLME operations optional 2013-04-08 12:00:16 -04:00
if_inet6.h net: ipv6: only invalidate previously tokenized addresses 2013-04-09 13:12:23 -04:00
inet6_connection_sock.h ipv6: Add helper inet6_csk_update_pmtu(). 2012-07-16 03:44:56 -07:00
inet6_hashtables.h ipv6: use a stronger hash for tcp 2013-02-21 18:15:58 -05:00
inet_common.h net-tcp: Fast Open client - sendmsg(MSG_FASTOPEN) 2012-07-19 11:02:03 -07:00
inet_connection_sock.h tcp: Tail loss probe (TLP) 2013-03-12 08:30:34 -04:00
inet_ecn.h tunnel: drop packet if ECN present with not-ECT 2012-09-27 18:12:37 -04:00
inet_frag.h net: frag, fix race conditions in LRU list maintenance 2013-05-06 11:06:51 -04:00
inet_hashtables.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inet_sock.h ipv6: use a stronger hash for tcp 2013-02-21 18:15:58 -05:00
inet_timewait_sock.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inetpeer.h ipv4: Maintain redirect and PMTU info in struct rtable again. 2012-07-10 22:40:14 -07:00
ip.h ipv4: Add a socket release callback for datagram sockets 2013-01-21 14:17:05 -05:00
ip6_checksum.h ipv6: move csum_ipv6_magic() and udp6_csum_init() into static library 2013-01-08 17:56:10 -08:00
ip6_fib.h ipv6: fix race condition regarding dst->expires and dst->from. 2013-02-20 15:11:45 -05:00
ip6_route.h ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers. 2013-01-18 14:41:13 -05:00
ip6_tunnel.h GRE: Refactor GRE tunneling code. 2013-03-26 12:27:18 -04:00
ip_fib.h ipv4: fix definition of FIB_TABLE_HASHSZ 2013-03-13 10:47:09 -04:00
ip_tunnels.h ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id. 2013-09-14 06:54:55 -07:00
ip_vs.h ipvs: fix sparse warnings for some parameters 2013-04-23 11:43:05 +09:00
ipcomp.h
ipconfig.h
ipv6.h ipv6: implement RFC3168 5.3 (ecn protection) for ipv6 fragmentation handling 2013-03-24 17:16:30 -04:00
ipx.h
iw_handler.h
lapb.h lapb: Neaten debugging 2012-05-17 18:45:20 -04:00
lib80211.h hostap: Don't use create_proc_read_entry() 2013-04-29 15:41:56 -04:00
llc.h llc: Remove stray reference to sysctl_llc_station_ack_timeout. 2012-09-17 13:13:24 -04:00
llc_c_ac.h
llc_c_ev.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
mac80211.h mac80211: add a flag to indicate CCK support for HT clients 2013-09-07 22:09:59 -07:00
mac802154.h mac802154: add wpan device-class support 2012-06-26 21:06:11 -07:00
mip6.h
mld.h
mrp.h net/802: Implement Multiple Registration Protocol (MRP) 2013-02-10 20:37:22 -05:00
ndisc.h ndisc: Add missing inline to ndisc_addr_option_pad 2013-08-11 18:35:26 -07:00
neighbour.h net neighbour, decnet: Ensure to align device private data on preferred alignment. 2013-02-11 00:21:44 -05:00
net_namespace.h netfilter: make /proc/net/netfilter pernet 2013-04-05 19:35:02 +02:00
net_ratelimit.h
netdma.h
netevent.h ipv6 netevent: Remove old_neigh from netevent_redirect. 2013-01-14 15:04:59 -05:00
netlabel.h userns: Convert the audit loginuid to be a kuid 2012-09-17 18:08:54 -07:00
netlink.h netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
netprio_cgroup.h netprio_cgroup: remove task_struct parameter from sock_update_netprio() 2013-04-09 13:19:37 -04:00
netrom.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
nexthop.h
nl802154.h
p8022.h
ping.h
pkt_cls.h pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
pkt_sched.h sch_api: introduce qdisc_watchdog_schedule_ns() 2013-02-12 18:59:45 -05:00
protocol.h net: Remove code duplication between offload structures 2012-11-15 17:39:51 -05:00
psnap.h
raw.h
rawv6.h ipv6: bool/const conversions phase2 2012-05-19 01:08:16 -04:00
red.h net_sched: red: Make minor corrections to comments 2012-04-16 23:53:11 -04:00
regulatory.h regulatory: use RCU to protect last_request 2013-01-03 13:01:30 +01:00
request_sock.h net: remove a stale comment for dl_next 2013-04-22 15:55:48 -04:00
rose.h
route.h ipv4: avoid a test in ip_rt_put() 2012-11-03 14:59:04 -04:00
rtnetlink.h rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
sch_generic.h net_sched: restore "linklayer atm" handling 2013-09-14 06:54:55 -07:00
scm.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
secure_seq.h net: defer net_secret[] initialization 2013-04-29 15:14:02 -04:00
slhc_vj.h
snmp.h net: avoid reloads in SNMP_UPD_PO_STATS 2012-08-06 13:40:47 -07:00
sock.h ipv6: do not clear pinet6 field 2013-05-11 16:26:38 -07:00
stp.h
tcp.h tcp: GSO should be TSQ friendly 2013-04-12 18:17:06 -04:00
tcp_memcontrol.h cgroup: pass struct mem_cgroup instead of struct cgroup to socket memcg 2012-04-10 10:04:07 -07:00
tcp_states.h
timewait_sock.h [PATCH] tcp: Cache inetpeer in timewait socket, and only when necessary. 2012-06-09 14:56:12 -07:00
transp_v6.h ipv6: rename datagram_send_ctl and datagram_recv_ctl 2013-01-31 13:53:08 -05:00
udp.h ipv6: call udp_push_pending_frames when uncorking a socket with AF_INET pending data 2013-07-28 16:29:49 -07:00
udplite.h net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
wext.h
wimax.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
wpan-phy.h mac802154: monitor device support 2012-05-16 15:17:08 -04:00
x25.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
x25device.h
xfrm.h xfrm: force a garbage collection after deleting a policy 2013-05-31 17:30:07 -07:00