kern.threads.max_threads_per_proc
kern.threads.max_groups_per_proc
2.Temporary disable borrower thread stash itself as
owner thread's spare thread in thread_exit(). there
is a race between owner thread and borrow thread:
an owner thread may allocate a spare thread as this:
if (td->td_standin == NULL)
td->standin = thread_alloc();
but thread_alloc() can block the thread, then a borrower
thread would possible stash it self as owner's spare
thread in thread_exit(), after owner is resumed, result
is a thread leak in kernel, double check in owner can
avoid the race, but it may be ugly and not worth to do.
sysconf.c:
Use 'break' rather than 'goto yesno' in sysconf.c so that we report a '0'
return value from the kernel sysctl.
vfs_aio.c:
Make aio reset its configuration parameters to -1 after unloading
instead of 0.
posix4_mib.c:
Initialize the aio configuration parameters to -1
to indicate that it is not loaded.
Add a facility (p31b_iscfg()) to determine if a posix4 facility has been
initialized to avoid having to re-order the SYSINITs.
Use p31b_iscfg() to determine if aio has had a chance to run yet which
is likely if it is compiled into the kernel and avoid spamming its
values.
Introduce a macro P31B_VALID() instead of doing the same comparison over
and over.
posix4.h:
Prototype p31b_iscfg().
Previously these were libc functions but were requested to
be made into system calls for atomicity and to coalesce what
might be two entrances into the kernel (signal mask setting
and floating point trap) into one.
A few style nits and comments from bde are also included.
Tested on alpha by: gallatin
No functional changes, but:
+ the mrouting module now should behave the same as the compiled-in
version (it did not before, some of the rsvp code was not loaded
properly);
+ netinet/ip_mroute.c is now truly optional;
+ removed some redundant/unused code;
+ changed many instances of '0' to NULL and INADDR_ANY as appropriate;
+ removed several static variables to make the code more SMP-friendly;
+ fixed some minor bugs in the mrouting code (mostly, incorrect return
values from functions).
This commit is also a prerequisite to the addition of support for PIM,
which i would like to put in before DP2 (it does not change any of
the existing APIs, anyways).
Note, in the process we found out that some device drivers fail to
properly handle changes in IFF_ALLMULTI, leading to interesting
behaviour when a multicast router is started. This bug is not
corrected by this commit, and will be fixed with a separate commit.
Detailed changes:
--------------------
netinet/ip_mroute.c all the above.
conf/files make ip_mroute.c optional
net/route.c fix mrt_ioctl hook
netinet/ip_input.c fix ip_mforward hook, move rsvp_input() here
together with other rsvp code, and a couple
of indentation fixes.
netinet/ip_output.c fix ip_mforward and ip_mcast_src hooks
netinet/ip_var.h rsvp function hooks
netinet/raw_ip.c hooks for mrouting and rsvp functions, plus
interface cleanup.
netinet/ip_mroute.h remove an unused and optional field from a struct
Most of the code is from Pavlin Radoslavov and the XORP project
Reviewed by: sam
MFC after: 1 week
to worry about ABI vs released systems yet. This is mostly transparent
since there is no significant exposure in the syscall interface. The
things that go wrong are mostly userland stuff - time(&intvariable).
Reviewed by: dfr, marcel
Approved by: re (jhb)
o on input don't strip the Ethernet header from packets
o input packet handling is now done with if_input
o track changes to ether_ifattach/ether_ifdetach API
o track changes to bpf tapping
o call ether_ioctl for default handling of ioctl's
o use constants from net/ethernet.h where possible
Reviewed by: many
Approved by: re
o don't strip the Ethernet header from inbound packets; pass packets
up the stack intact (required significant changes to some drivers)
o reference common definitions in net/ethernet.h (e.g. ETHER_ALIGN)
o track ether_ifattach/ether_ifdetach API changes
o track bpf changes (use BPF_TAP and BPF_MTAP)
o track vlan changes (ifnet capabilities, revised processing scheme, etc.)
o use if_input to pass packets "up"
o call ether_ioctl for default handling of ioctls
Reviewed by: many
Approved by: re
o use if_input for input packet processing
o don't strip the Ethernet header for input packets
o use BPF_* macros bpf tapping
o call ether_ioctl to handle default ioctl case
o track vlan changes
Reviewed by: many
Approved by: re
drivers "tag packets" with an m_tag and the input packet handling recognizes
such packets and does the right thing
o track the number of active vlans on an interface; this lets lots of places
only do vlan-specific processing when needed
o track changes to ether_ifdetach/ether_ifattach
o track bpf changes
o eliminate the use of M_PROTO1 for communicating to drivers about tagged
packets
o eliminate the use of IFF_LINK0 for drivers communicating to the vlan code
that they support h/w tagging; replaced by explicit interface capabilities
o add ifnet capabilities for h/w tagging and support of "large mtu's"
o use new interface capabilities to auto-configure use of large mtu's and h/w
tagging
o add support for proper handling of promiscuous mode
o document driver/vlan communication conventions
Reviewed by: many
Approved by: re
o add if_input member for interface drivers to call through to pass packets "up"
o remove ethernet-specific function decls (moved to ethernet.h)
Reviewed by: many
Approved by: re
ether_header; instead drivers are to leave the Ethernet header at the
front of the packet
o add declarations for netgraph and vlan hooks that were removed from ethernet.h
o change various in-file calling conventions to track change in input API
o fixup bridge support to handle Ethernet header no longer being stripped
o add consistency checks to ether_input to catch problems with the change
in the API; some of these may want to be moved to #ifdef DIAGNOSTIC at a
later time (though they are not too expensive to leave as is)
o change ether_demux to eliminate the passing of the Ethernet header; it is
now expected at the front of the packet a la ether_input
o add ether_sprintf compatibility shim
o change ether_ifattach API to remove "bpf supported param" and add a pointer
to the MAC address to be installed for the LL address (this is for future
changes to divest struct arpcom from struct ifnet)
o change ether_ifdetach API to remove "bpf support param"
Reviewed by: many
Approved by: re
o ETHER_* (ETHER_ALIGN, ETHER_MAX_FRAME, ETHER_CRC_LEN, etc.)
o M_HASFCS for drivers to indicate packets include FCS
o remove global declarations for ng_ether* and vlan_* since these
represent a private contract between the if_ethersubr.c code and
certain parts of the system that should not normally be abused
o add ether_* declarations that were elsewhere
o remove ETHER_BPF_* since they are no longer used with the parameter
no longer passed to ether_ifattach and ether_ifdetach
Reviewed by: many
Approved by: re
o introduce BPF_TAP and BPF_MTAP macros to hide implementation details and
ease code portability
o use m_getcl where appropriate
Reviewed by: many
Approved by: re
Obtained from: NetBSD (multiple link type support)
signed, since they describe a ring buffer and signed arithmetic is
performed on them. This avoids some evilish casts.
Since this changes all but two members of this structure, style(9)
those remaining ones, too.
Requested by: bde
Reviewed by: bde (earlier version)
