inpcb: overhaul in_pcb.h
Pull up all user-visible stuff to the top of the file and isolate the
rest under _KERNEL. The user visible parts are:
- struct in_conninfo
- struct xinpcb
- defines for inp_flags bits, that are shared between xinpcb and inpcb
PR: 293493
sound: enforce MASTER volume mute during playback
MASTER mute (vol.mute) works while audio is playing. However, if a
stream is stopped and restarted (PCMTRIG_STOP -> PCMTRIG_START), the
audio will resume even though the mixer shows the MASTER volume as
muted. Other streams that are already playing remain silent. New streams
may also start playing audio regardless of the MASTER mute state.
The volume feeder now considers the MASTER mute when determining whether
a channel should be muted. This ensures MASTER mute is consistently
enforced for all streams and removes the dependency on trigger-driven
state propagation.
Tested with Creative Labs CA0132 card.
MFC after: 1 week
Reviewed by: christos
Differential Revision: https://reviews.freebsd.org/D55605
tcp: make sack_filter.c compilable without _WANT_TCPCB
This file can be compiled as a standalone program for debugging purposes.
Achieve that without exposing hack from tcp_var.h that is destined for
removal.
netinet: remove _WANT_INPCB and _WANT_TCPCB
These were hacks since FreeBSD 12 that provided some transition period for
utilities to migrate from reading kernel memory via kvm(3) to sysctl(3)
based APIs. The transition period is over.
systat: remove kvm(3) support for -netstat mode
The kvm(3) mode was actually non-functional since FreeBSD 8 for kernels
with VIMAGE, since FreeBSD 12 for the GENERIC kernel and since FreeBSD 14
for all kernels. The reason for that is that systat(1) tried to lookup
symbol "tcb" to check if kvm(3) is working. The symbol no longer exist in
the kernel.
A side effect was that systat(1) lost true kvm(3) support for all other
modes, e.g. -swap or -pigs. The tool was still working, but libkvm was
just a shim to sysctl(3) API.
So, contrary to what the header line says, this change actually restores
the kvm(3) support for other modes. Now we read the "allproc" symbol.
This was the last tool that abused _WANT_INPCB.
carp: retire ioctl(2) API
All supported stable branches use netlink(4) API to configure carp(4).
The deleted code also has kernel stack leak vulnerability, that requires
extra effort to fix.
Reviewed by: pouria, kp
Differential Revision: https://reviews.freebsd.org/D55804
fusefs: redo vnode attribute locking
Previously most fields in fuse_vnode_data were protected by the vnode
lock. But because DEBUG_VFS_LOCKS was never enabled by default until
stable/15 the assertions were never checked, and many were wrong.
Others were missing. This led to panics in stable/15 and 16.0-CURRENT,
when a vnode was expected to be exclusively locked but wasn't, for fuse
file systems that mount with "-o async".
In some places it isn't possible to exclusively lock the vnode when
accessing these fields. So protect them with a new mutex instead. This
fixes panics and unprotected field accesses in VOP_READ,
VOP_COPY_FILE_RANGE, VOP_GETATTR, VOP_BMAP, and FUSE_NOTIFY_INVAL_ENTRY.
Add assertions everywhere the protected fields are accessed.
Lock the vnode exclusively when handling FUSE_NOTIFY_INVAL_INODE.
During fuse_vnode_setsize, if the vnode isn't already exclusively
locked, use the vn_delayed_setsize mechanism. This fixes panics during
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hwpmc_amd: fix amd_get_msr() MSR offset for newer counter bases
The previous code subtracted AMD_PMC_PERFCTR_0 (0xC0010004) from all
perfctr MSR addresses to compute a relative offset. This is incorrect
for counters using AMD_PMC_CORE_BASE (0xC0010200), AMD_PMC_L3_BASE
(0xC0010230), and AMD_PMC_DF_BASE (0xC0010240), producing wrong offsets.
Fix by promoting amd_core_npmcs, amd_l3_npmcs, and amd_df_npmcs to
static module-level variables and computing the correct flat RDPMC
index per AMD BKDG 24594 page 440:
ECX 0-5: Core counters 0-5
ECX 6-9: DF counters 0-3
ECX 10-15: L3 Cache counters 0-5
ECX 16-27: DF counters 4-15
ECX > 27: Reserved, returns EINVAL
Reviewed by: Ali Mashtizadeh <ali at mashtizadeh.com>, mhorne
Sponsored by: NLINK (https://nlink.com.br), Recife, Brazil
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shm: Zero struct kinfo_file in sysctl handler
Reported by: Calif.io in collaboration with Claude and Anthropic Research
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D55806
