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897c0f57d4
freebsd-dev/sys/net
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Oleg Bulyzhin 897c0f57d4 1) dummynet_io() declaration has changed. 
2) Alter packet flow inside dummynet: allow certain packets to bypass
dummynet scheduler. Benefits are:

- lower latency: if packet flow does not exceed pipe bandwidth, packets
  will not be (up to tick) delayed (due to dummynet's scheduler granularity).
- lower overhead: if packet avoids dummynet scheduler it shouldn't reenter ip
  stack later. Such packets can be fastforwarded.
- recursion (which can lead to kernel stack exhaution) eliminated. This fix
  long existed panic, which can be triggered this way:
  	kldload dummynet
	sysctl net.inet.ip.fw.one_pass=0
	ipfw pipe 1 config bw 0
	for i in `jot 30`; do ipfw add 1 pipe 1 icmp from any to any; done
	ping -c 1 localhost

3) Three new sysctl nodes are added:
net.inet.ip.dummynet.io_pkt -		packets passed to dummynet
net.inet.ip.dummynet.io_pkt_fast - 	packets avoided dummynet scheduler
net.inet.ip.dummynet.io_pkt_drop -	packets dropped by dummynet

P.S. Above comments are true only for layer 3 packets. Layer 2 packet flow
     is not changed yet.

MFC after:	3 month
2007-11-06 23:01:42 +00:00
..
bpf_filter.c Make the type of the memory used by the BPF filter unsigned, so it 2007-09-13 09:00:32 +00:00
bpf_jitter.c Add BPF Just-In-Time compiler support for ng_bpf(4). 2005-12-07 21:30:47 +00:00
bpf_jitter.h Add BPF Just-In-Time compiler support for ng_bpf(4). 2005-12-07 21:30:47 +00:00
bpf.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
bpf.h Additions from libpcap 0.9.8 unbreak the build. 2007-10-21 13:23:32 +00:00
bpfdesc.h Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which 2007-08-06 14:26:03 +00:00
bridgestp.c If the STP state machine is stopped then clear the bridge-id and root-id. 2007-08-18 12:06:13 +00:00
bridgestp.h - Ensure the path cost does not exceed 65535 in legacy STP mode. 2007-08-04 21:09:04 +00:00
bsd_comp.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
ethernet.h Use a uint16_t type for the vlan tag rather an int. 2007-10-18 21:52:31 +00:00
fddi.h - Make IFP2ENADDR() a pointer to IF_LLADDR() rather than another 2005-11-11 07:36:14 +00:00
firewire.h
ieee8023ad_lacp.c Allow the LACP state to be queried from userland which at the moment is the 2007-07-05 09:18:57 +00:00
ieee8023ad_lacp.h Allow the LACP state to be queried from userland which at the moment is the 2007-07-05 09:18:57 +00:00
if_arc.h Use ANSI C function protypes and declarations for if_arcsubr. 2006-04-12 07:44:31 +00:00
if_arcsubr.c Use ANSI C function protypes and declarations for if_arcsubr. 2006-04-12 07:44:31 +00:00
if_arp.h - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
if_atm.h
if_atmsubr.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_bridge.c 1) dummynet_io() declaration has changed. 2007-11-06 23:01:42 +00:00
if_bridgevar.h Add an option to limit the number of source MACs that can be behind a bridge 2007-11-04 08:32:27 +00:00
if_clone.c Revise network interface cloning to take an optional opaque 2006-07-09 06:04:01 +00:00
if_clone.h Revise network interface cloning to take an optional opaque 2006-07-09 06:04:01 +00:00
if_disc.c Add a comment explaining why disc(4) bears the IFF_LOOPBACK flag. 2007-10-27 19:57:41 +00:00
if_dl.h
if_edsc.c Give a hint that softc can contain many things besides ifp. 2007-03-26 09:05:10 +00:00
if_ef.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_enc.c Various bpf(4) related fixes to catch places up to the new bpf(4) 2006-12-29 13:59:50 +00:00
if_ethersubr.c 1) dummynet_io() declaration has changed. 2007-11-06 23:01:42 +00:00
if_faith.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
if_fddisubr.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_fwsubr.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_gif.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_gif.h Add some initial locking to gif(4). It doesn't covers the whole driver, 2006-01-30 08:39:09 +00:00
if_gre.c Sync comments to code: we now use priv_check() rather than suser() to 2007-06-26 23:01:01 +00:00
if_gre.h
if_iso88025subr.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_lagg.c Use ETHER_BPF_MTAP so that the vlan tags are visible to bpf(4) when stacked 2007-10-20 02:43:23 +00:00
if_lagg.h Fix two panics in lagg. 2007-10-12 03:03:16 +00:00
if_llc.h Move the __packed declarations. This makes sizeof(struct llc) 8 again 2006-12-01 17:50:11 +00:00
if_loop.c if_loop doesn't need to keep the list of lo(4) interfaces. Today 2007-10-27 18:25:53 +00:00
if_media.c - Introduce ifmedia_baudrate(), which returns correct baudrate of the 2006-02-14 12:10:03 +00:00
if_media.h remove IFM_IEEE80211_HT40PLUS and IFM_IEEE80211_HT40MINUS; they 2007-09-18 20:30:40 +00:00
if_mib.c Add a new leaf to the net.link.generic.ifdata.%d sysctl to retrieve 2006-01-04 12:57:09 +00:00
if_mib.h Add a new leaf to the net.link.generic.ifdata.%d sysctl to retrieve 2006-01-04 12:57:09 +00:00
if_ppp.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_ppp.h
if_pppvar.h Use callout mechanism instead of timeout()/untimeout(). 2006-12-05 18:54:21 +00:00
if_sl.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
if_slvar.h
if_sppp.h
if_spppfr.c
if_spppsubr.c Cast the ioctl define to the type of the variable being switched on. 2007-06-10 04:53:13 +00:00
if_stf.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_stf.h
if_tap.c Add a sysctl net.link.tap.up_on_open which defaults to zero; when it 2007-03-19 18:17:31 +00:00
if_tap.h Fix our ioctl(2) implementation when the argument is "int". New 2006-09-27 19:57:02 +00:00
if_tapvar.h
if_tun.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if_tun.h
if_types.h Remove IPX over IP tunneling support, which allows IPX routing over IP 2007-06-13 14:01:43 +00:00
if_var.h The struct if_data members ifi_recvquota and ifi_xmitquota have been 2007-05-16 18:37:37 +00:00
if_vlan_var.h Prepare for 802.1p: 2007-02-28 22:05:30 +00:00
if_vlan.c The bridging output function puts the mbuf directly on the interfaces send 2007-10-18 21:22:15 +00:00
if.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
if.h Add IFCAP_LRO flag for drivers to announce their TCP Large Receive Offload 2007-06-11 20:08:11 +00:00
iso88025.h - Make IFP2ENADDR() a pointer to IF_LLADDR() rather than another 2005-11-11 07:36:14 +00:00
netisr.c Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which 2007-08-06 14:26:03 +00:00
netisr.h
pfil.c Somewhat re-factor the read/write locking mechanism associated with the packet 2006-02-02 03:13:16 +00:00
pfil.h Correct the definition of PFIL_HOOKED() so that it compares 2007-06-08 12:43:25 +00:00
pfkeyv2.h Commit the change from FAST_IPSEC to IPSEC. The FAST_IPSEC 2007-07-03 12:13:45 +00:00
ppp_comp.h
ppp_deflate.c This patch fixes a problem, which exists if you have IPSEC in your kernel 2006-02-27 16:56:22 +00:00
ppp_defs.h
ppp_tty.c Use callout mechanism instead of timeout()/untimeout(). 2006-12-05 18:54:21 +00:00
radix.c The code in rn_walktree_from() that checks if we backed up too far 2006-02-07 20:25:39 +00:00
radix.h
raw_cb.c raw_disconnect() now disconnects but does not detach the raw pcb. As a 2006-06-02 08:27:15 +00:00
raw_cb.h
raw_usrreq.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
route.c Close a race when trying to lookup a gateway route in rt_check(). 2007-10-22 19:01:26 +00:00
route.h - Fill in the correct rtm_index for RTM_ADD and RTM_CHANGE messages. 2006-03-15 19:39:09 +00:00
rtsock.c Do not set the RTF_GATEWAY flag if RTF_LLINFO is set, it doesn't make much 2007-09-08 19:28:45 +00:00
slcompress.c
slcompress.h
slip.h
zlib.c
zlib.h