* Use NHF_ namespace for all nhop flags
* Rename nhop_data -> nhop_prepend
* Rename fib4_lookup_nh_extended -> fib4_lookup_nh_ext
* Add "flags" argument to fib4_lookup_nh_ext() to specify whether we want
returned nh_ext structure to be refcounted or not.
structure without doinf L2 resolve. It also requires freeing
references by calling fib4_free_nh_ext().
Convert in_pcbladdr() to use it.
Convert tcp_maxmtu() to use it.
The goals of the new API is to provide consumers with minimal
needed information, but as fast as possible. So we provide
full nexthop info copied into alighed on-cache structure
instead of rte/ia pointers, their refcounts and locks.
This does not provide solution for protecting from egress
ifp destruction, but does not make it any worse.
Current changes:
nhops:
Add fib4_lookup_prepend() function which stores either full
L2+L3 prepend info (e.g. MAC header in case of plain IPv4) or
L3 info with NH_FLAGS_L2_INCOMPLETE flag indicating that no valid L2
info exists and we have to take "slow" path.
ip_output:
Currently ip[ 46]_output consumers use 'struct route' for
the following purposes:
1) double lookup avoidance(route caching)
2) plain route caching
3) get path MTU to be able to notify source.
The former pattern is mostly used by various tunnels
(gif, gre, stf). (Actually, gre is the only remaining,
others were already converted. Their locking model did
not scale good enogh to benefit from such caching, so
we have (temporarily) removed it without any performance
loss).
Plain route caching used by SCTP is simply wrong and should be removed.
Temporary break it for now just to be able to compile.
Optimize path mtu reporting by providing it in new 'route_info' stucture.
Minimize games with @ia locking/refcounting for route lookup:
add special nhop[46]_extended structure to store more route attributes.
Pointer to given structure can be passed to fib4_lookup_prepend() to indicate
we want this info (we actually needs it for UDP and raw IP).
ether_output:
Provide light-weight ether_output2() call to deal with
transmitting L2 frame (e.g. properly handle broadcast/simloop/bridge/
other L2 hooks before actually transmitting frame by if_transmit()).
Add a hack based on new RT_NHOP ro_flag to distinguish which version should
we call. Better way is probably to add a new "if_output_frame" driver
callbacks.
Next steps:
* Convert ip_fastfwd part
* Implement auto-growing array for per-radix nexthops
* Implement LLE tracking for nexthop calculations to be able to
immediately provide all necessary info in single route lookup
for gateway routes
* Switch radix locking scheme to runtime/cfg lock
* Implement multipath support for rtsock
* Implement "tracked nexthops" for tunnels (e.g. _proper_
nexthop caching)
* Add IPv6 support for remaining parts (postponed not to
interfere with user/ae/inet6 branch)
* Consider adding "if_output_frame" driver call to
ease logical frame pushing.
1. Remove initializer for badstack_sbuf_size; it gets set unconditionally.
2. Remove meaningless comment.
3. Group witness_count and its sysctl together.
4. Fix spacing in for statements (space after for and within condition).
5. Change *all* M_NOWAIT usages in witness_initialize() to M_WAITOK; not
just those that were newly introduced -- the allocation is assumed to
succeed for all allocations.
6. Avoid using uint8_t as the base type in sizeof() expressions; Use the
variable name (w_rmatrix) as much as possible.
Pointed out by: jhb@ (thanks!)
Queued async events handling in CAM opened race, that may lead to duplicate
AC_PATH_REGISTERED events delivery during boot. That was not happening
before r272935 because the driver was initialized later. After that change
it started create duplicate ports in CTL.
Target mode operation does not depend on the initiator mode scan process.
This change allows the target driver to attach earlier and receive some
async events (like AC_CONTRACT) that could be lost otherwise.
MFC after: 1 week
the value without recompiling the kernel. This is useful when
recompiling is not possible as an immediate solution. When we run out
of witness objects, witness is completely disabled. Not having an
immediate solution can therefore be problematic.
Submitted by: Sreekanth Rupavatharam <rupavath@juniper.net>
Obtained from: Juniper Networks, Inc.
- Make #include path to h_macros.h a non-relative path
- __gl_stat_t is synonymous with struct stat on FreeBSD
- FreeBSD doesn't have _DIRENT_RECLEN
- Skip over glob_star on FreeBSD (testcase doesn't pass)
In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
Such LUNs will be visible to initiators, but return "not ready" status
on media access commands. If backing storage become available later,
`ctladm modify ...` or `service ctld reload` can trigger its reopen.
FreeBSD segfaults on invalid pointers passed to getcwd because it throbs the
address passed in in libc, whereas NetBSD just passes the information off to
the syscall, which allows the kernel to return EFAULT on bad pointers.
In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
compatible with write-locked path. Test for MAP_ENTRY_NOSYNC and set
VPO_NOSYNC for pages with dirty mask zero (this does not exclude a
possibility that the page is dirty, e.g. due to read fault on
writeable mapping and consequent write; the same issue exists in the
slow path).
Use helper vm_fault_dirty() to unify fast and slow path handling of
VPO_NOSYNC and setting the dirty mask.
Reviewed by: alc
Sponsored by: The FreeBSD Foundation
{get,set}{domain,host}name. Adjust the tests to not exceed that
value when testing out the code
Add a positive and negative test for MAXHOSTNAMELEN-1 and
MAXHOSTNAMELEN, respectively
PR: 181127
In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
humanize_number(3). Bringing in additional revisions from NetBSD's
humanize_number(3) will fix the tests
Account for the fact that util.h on NetBSD is libutil.h on FreeBSD
Submitted by: pho
Sponsored by: EMC / Isilon Storage Division
- Read the counts of received, dropped, and transmitted management
packets and add sysctl nodes for them.
- Fix the total octets received/transmitted to read all 64 bits of
the counters.
- Add missing sysctl nodes for rlec, tncrs, fcruc, tor, and tot.
- Remove spurious spaces.
Reviewed by: Eric Joyner @ Intel
MFC after: 1 week
