A received control packet may cause the transmit queue to be flushed, in
which case ng_l2tp_seq_recv_nr() cancels the transmit timeout handler.
The handler checks to see if it was cancelled before doing anything, but
did so before acquiring the node lock, so a small race window could
cause ng_l2tp_seq_rack_timeout() to attempt to flush an empty queue,
ultimately causing a null pointer dereference.
PR: 241133
Reviewed by: bz, glebius, Lutz Donnerhacke
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D26548
contiguous memory but in one path we did not always guarantee this,
thus do a m_pullup() there.
PR: 214385
Submitted by: Joe Jones (joeknockando googlemail.com)
MFC after: 3 days
When copying big structures, LLVM generates calls to memmove(), because
it may not be able to figure out whether structures overlap. This caused
linker errors to occur. memmove() is now implemented using bcopy().
Ideally it would be the other way around, but that can be solved in the
future. On ARM we don't do add anything, because it already has
memmove().
Discussed on: arch@
Reviewed by: rdivacky
if netgraph reported error while delivering to destination.
Reset 'next send' counter to the last requested by peer on ack timeout
to resend all subsequest packets after lost one again without additional hints.
Previous value 16 was too small for real LAC as temporal activity
spike cound easily overflow queue demanding tunnel disconnection due
to possible state inconsistency.
- Use callout_pending() instead of our own flags.
- Remove home-grown protection of node, which has a scheduled
callout().
- Remove spl(9) calls.
Tested by: bz
- according to RFC2661 an offset size of 0 is allowed.
- when skipping offset padding do not forget to also skip
the 2 octets of the offset size field.
Reviewed by: archie
Approved by: pjd (mentor)
the mbuf allocator flags {M_TRYWAIT, M_DONTWAIT}.
o Fix a bpf_compat issue where malloc() was defined to just call
bpf_alloc() and pass the 'canwait' flag(s) along. It's been changed
to call bpf_alloc() but pass the corresponding M_TRYWAIT or M_DONTWAIT
flag (and only one of those two).
Submitted by: Hiten Pandya <hiten@unixdaemons.com> (hiten->commit_count++)
