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freebsd-dev/sys/net
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Attilio Rao 1abcdbd127 When user_frac in the polling subsystem is low it is going to busy the 
CPU for too long period than necessary.  Additively, interfaces are kept
polled (in the tick) even if no more packets are available.
In order to avoid such situations a new generic mechanism can be
implemented in proactive way, keeping track of the time spent on any
packet and fragmenting the time for any tick, stopping the processing
as soon as possible.

In order to implement such mechanism, the polling handler needs to
change, returning the number of packets processed.
While the intended logic is not part of this patch, the polling KPI is
broken by this commit, adding an int return value and the new flag
IFCAP_POLLING_NOCOUNT (which will signal that the return value is
meaningless for the installed handler and checking should be skipped).

Bump __FreeBSD_version in order to signal such situation.

Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
2009-05-30 15:14:44 +00:00
..
bpf_buffer.c Fill in BPF sysctl descriptions. 2008-07-25 23:58:09 +00:00
bpf_buffer.h Introduce support for zero-copy BPF buffering, which reduces the 2008-03-24 13:49:17 +00:00
bpf_filter.c Fix the last missing parentheses for a return statement in bpf_filter.c. 2008-08-29 20:00:55 +00:00
bpf_jitter.c Initialize scratch memory for JIT-compiled filter when it is allocated. 2008-08-28 16:40:51 +00:00
bpf_jitter.h Fix a typo in copyrights. 2008-08-25 20:43:13 +00:00
bpf_zerocopy.c Clarify some comments, fix some types, and rename ZBUF_FLAG_IMMUTABLE to 2009-03-07 10:21:37 +00:00
bpf_zerocopy.h Make sure we are clearing the ZBUF_FLAG_IMMUTABLE any time a free buffer 2008-07-05 20:11:28 +00:00
bpf.c rev bpf attach/detach event api to include the dlt 2009-05-25 16:34:35 +00:00
bpf.h Sync DLTs with latest libpcap version. 2009-04-02 13:02:12 +00:00
bpfdesc.h Remove trailing ';' in BPFD_LOCK_ASSERT macro. 2008-08-01 22:08:14 +00:00
bridgestp.c replace IFQ_ENQUEUE + if_start with if_transmit 2009-04-27 22:46:26 +00:00
bridgestp.h
ethernet.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
fddi.h
firewire.h
flowtable.c remove gratuitous memory barrier, a remnant of unified L2 / L3 2009-04-27 22:45:19 +00:00
flowtable.h - Import infrastructure for caching flows as a means of accelerating L3 and L2 lookups 2009-04-19 00:16:04 +00:00
ieee8023ad_lacp.c Use the flowid if its available for selecting the tx port. 2009-04-30 14:25:44 +00:00
ieee8023ad_lacp.h Remove extra semicolons. 2008-03-17 01:26:44 +00:00
if_arc.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_arcsubr.c remove call to IFQ_HANDOFF is it called by if_transmit in the default case 2009-04-27 22:44:26 +00:00
if_arp.h
if_atm.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_atmsubr.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_bridge.c Reorder the bridge add and delete routines to avoid calling ifpromisc() with 2009-05-01 19:46:42 +00:00
if_bridgevar.h
if_clone.c V_irtualize the if_clone framework, thus allowing for clonable ifnets 2009-05-23 21:43:44 +00:00
if_clone.h Fix clone destruction, can't use the simple api because that does not remove 2008-09-20 19:38:37 +00:00
if_dead.c During if_detach(), invoke if_dead() to set the ifnet's function 2009-04-23 11:51:53 +00:00
if_disc.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_dl.h
if_edsc.c
if_ef.c replace IFQ_HANDOFF with if_transmit 2009-04-27 22:45:56 +00:00
if_enc.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_enc.h Increase statistic counters for enc0 interface when enabled 2008-08-12 09:05:01 +00:00
if_ethersubr.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
if_faith.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_fddisubr.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_fwsubr.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_gif.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
if_gif.h Make indentation more uniform accross vnet container structs. 2009-05-02 08:16:26 +00:00
if_gre.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_gre.h Add support for the optional key in the GRE header. 2008-06-20 17:26:34 +00:00
if_iso88025subr.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_lagg.c Use the flowid if its available for selecting the tx port. 2009-04-30 14:25:44 +00:00
if_lagg.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_llatbl.c When an interface address is removed and the last prefix 2009-05-20 21:07:15 +00:00
if_llatbl.h When an interface address is removed and the last prefix 2009-05-20 21:07:15 +00:00
if_llc.h
if_loop.c V_irtualize the if_clone framework, thus allowing for clonable ifnets 2009-05-23 21:43:44 +00:00
if_media.c
if_media.h Add TWINAX (Twin Axial Copper for 10G networking) media types. 2008-12-17 22:59:29 +00:00
if_mib.c Permit buiding kernels with options VIMAGE, restricted to only a single 2009-04-30 13:36:26 +00:00
if_mib.h
if_sppp.h
if_spppfr.c
if_spppsubr.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_stf.c Prefer ifa_link (structure field) to ifa_list (macro alias for it). 2009-04-20 22:41:19 +00:00
if_stf.h
if_tap.c Remove the splimp()/splx() calls around the setting of the MTU. They are 2009-03-17 02:32:36 +00:00
if_tap.h Add new TAPGIFNAME tap(4) character device ioctl. This is a 2008-09-08 22:43:55 +00:00
if_tapvar.h
if_tun.c Acquire interfce address list lock while walking the interface address 2009-04-20 23:25:38 +00:00
if_tun.h
if_types.h
if_var.h When user_frac in the polling subsystem is low it is going to busy the 2009-05-30 15:14:44 +00:00
if_vlan_var.h
if_vlan.c The vlan code has not required the miibus code since 6.0 when 2009-04-17 17:40:47 +00:00
if.c Set ifp->if_afdata_initialized to 0 while holding IF_AFDATA_LOCK on ifp, 2009-05-22 22:22:21 +00:00
if.h When user_frac in the polling subsystem is low it is going to busy the 2009-05-30 15:14:44 +00:00
iso88025.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
netisr.c Garbage collect now-unused NETISR_FORCEQUEUE, which overrode the global 2009-05-13 17:22:33 +00:00
netisr.h Garbage collect unused NETISR_{ATM,NETGRAPH,PPP} netisr constants. 2009-05-18 10:33:23 +00:00
pfil.c A few locking fixes and cleanups to pfil hook registration, 2008-12-16 17:03:22 +00:00
pfil.h Make the rmlock(9) interface a bit more like the rwlock(9) interface: 2009-05-29 10:52:37 +00:00
pfkeyv2.h
ppp_defs.h
radix_mpath.c Extend route command: 2009-04-14 23:05:36 +00:00
radix_mpath.h When RADIX_MPATH is enabled, the route selection is not rotating 2008-05-30 09:34:35 +00:00
radix.c remove assertion checks for now - ipfw uses its own lock for protecting its radix tree instance 2008-12-16 11:01:36 +00:00
radix.h - convert radix node head lock from mutex to rwlock 2008-12-07 21:15:43 +00:00
raw_cb.c For all files including net/vnet.h directly include opt_route.h and 2009-02-27 14:12:05 +00:00
raw_cb.h Put a global variables, which were virtualized but formerly 2008-12-11 16:26:38 +00:00
raw_usrreq.c For all files including net/vnet.h directly include opt_route.h and 2009-02-27 14:12:05 +00:00
route.c Unbreak options VIMAGE + nooptions INVARIANTS kernel builds. 2009-05-02 05:02:28 +00:00
route.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
rtsock.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
slcompress.c
slcompress.h
vnet.h V_irtualize the if_clone framework, thus allowing for clonable ifnets 2009-05-23 21:43:44 +00:00
zlib.c
zlib.h