stripping was disabled due to being in promisc mode. This is a hardware
bug. Update comment to explicitly state the reason the manual vlan tag
insertion in this case. See rev. 1.53 for further information as well.
Noticed by: jhb
generic vlan_start() takes care of it when vlan hardware insertion is disabled.
In em_set_promisc() add a note that BPF may also be enabled without going into
promisc mode.
Reviewed by: jfv
IP options and add skeleton IPv6 support. The new code structure can also be
easily enhanced to support new/more protocols (SCTP) in the future.
Reviewed by: jfv
and add skeleton IPv6 support. The new code structure can also be easily
enhanced to support new/more protocols (SCTP) and IP fragmentation in the
future.
In em_encap() only try to do TSO if 'dotso' is true.
Reviewed by: jfv
- EFBIG means the mbuf chain was too long and bus_dma ran out of segments.
Defragment the mbuf chain and try again. (Already existed, not changed.)
- ENOMEM means bus_dma could not obtain enough bounce buffers at this point
in time. Defer sending and try again later.
- All other errors, in particular EINVAL, are fatal and prevent the mbuf
chain from ever going through. Drop it and report error.
- Checking (nsegs == 0) is unnecessary as bus_dmamap_load_mbuf_sg() always
reports an error if it is < 1.
This prevents broken packets from clogging the interface queue indefinately.
Discussed with: scottl
Reviewed by: jfv
Remove workarounds for tty_refcount beeing 0, this will be fixed differently
later.
Back out rev 1.145 since we initialize the tty struct from scratch and bad
things can't happen anymore.
scale it to min(ephemeral port range / 2, maxsockets / 5) so that people
with large gobs of memory and/or large maxsockets settings will not
exhaust their entire ephemeral port range with sockets in the TIME_WAIT
state during periods of heavy load.
Those who wish to tweak the size of the TIME_WAIT zone can still do so with
net.inet.tcp.maxtcptw.
Reviewed by: glebius, ru
when root doesn't have the permission to enter target user's home directory.
If set, PAM environment variable HOME will be used in chdir(2) instead of
pwd->pw_dir, this allows pam_chroot module to continue to function.
another 16 bytes off of BTX (and thus boot2):
- Compare against the value of %eax that is saved on the stack instead of
loading it into %eax (which requires saving the current %eax on the
stack).
- Use %ch to examine the keyboard flag state in the BIOS to see if
Ctrl-Alt-Del is pressed instead of %al so we don't have to save %eax on
the stack anymore.
MFC after: 1 week
BTX (and thus boot2):
- Don't bother saving %eax, %ebx, or %ecx as it is not necessary.
- Use a more compact sequence to load the base value out of a GDT entry
by loading the contiguous low 24 bits into the upper 24 bits of %eax,
loading the high 8 bits into %al, and using a ror to rotate the bits
(2 mov's and a ror) rather than loading the pieces in smaller chunks
(3 mov's and a shl).
- Use movzwl + leal instead of movl + movw + shll + addl.
- Use 'xchgl %eax,%foo' rather than 'movl %eax,%foo' for cases where
it's ok to trash %eax. xchgl %eax, foo is a 1-byte opcode whereas the
mov is a 2-byte opcode.
- Use movzwl rather than xorl + movw.
MFC after: 1 week
