CVS commit: src/sys

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Sun Mar 15 23:04:51 UTC 2020

Modified Files:
        src/sys/arch/arm/amlogic: gxlphy.c
        src/sys/arch/x86/pci: if_vmx.c
        src/sys/dev/mii: acphy.c amhphy.c atphy.c bmtphy.c brgphy.c ciphy.c
            dmphy.c etphy.c exphy.c gentbi.c glxtphy.c gphyter.c icsphy.c
            igphy.c ihphy.c ikphy.c inphy.c iophy.c ipgphy.c jmphy.c lxtphy.c
            makphy.c micphy.c mii.c mii_ethersubr.c mii_physubr.c miivar.h
            mvphy.c nsphy.c nsphyter.c pnaphy.c qsphy.c rdcphy.c rgephy.c
            rlphy.c smscphy.c sqphy.c tlphy.c tqphy.c ukphy.c ukphy_subr.c
        src/sys/dev/pci: if_mcx.c if_wm.c
        src/sys/dev/pci/ixgbe: ixgbe.c ixv.c
        src/sys/dev/usb: if_atu.c if_atureg.h if_aue.c if_axe.c if_axen.c
            if_cdce.c if_cue.c if_kue.c if_mos.c if_mue.c if_otus.c
            if_otusvar.h if_rum.c if_rumvar.h if_run.c if_runvar.h if_smsc.c
            if_udav.c if_upgt.c if_upgtvar.h if_upl.c if_ural.c if_uralvar.h
            if_ure.c if_url.c if_urndis.c if_urtw.c if_urtwn.c if_urtwnvar.h
            if_urtwreg.h if_zyd.c if_zydreg.h usbnet.c usbnet.h
        src/sys/net: if_media.c if_media.h
        src/sys/net80211: ieee80211.c ieee80211_netbsd.h ieee80211_var.h

Log Message:
Define and implement a locking protocol for the ifmedia / mii layers:
- MP-safe drivers provide a mutex to ifmedia that is used to serialize
  access to media-related structures / hardware regsiters.  Converted
  drivers use the new ifmedia_init_with_lock() function for this.  The
  new name is provided to ease the transition.
- Un-converted drivers continue to call ifmedia_init(), which will supply
  a compatibility lock to be used instead.  Several media-related entry
  points must be aware of this compatibility lock, and are able to acquire
  it recursively a limited number of times, if needed.  This is a SPIN
  mutex with priority IPL_NET.
- This same lock is used to serialize access to PHY registers and other
  MII-related data structures.

The PHY drivers are modified to acquire and release the lock, as needed,
and assert the lock is held as a diagnostic aid.

The "usbnet" framework has had an overhaul of its internal locking
protocols to fit in with the media / mii changes, and the drivers adapted.

USB wifi drivers have been changed to provide their own adaptive mutex
to the ifmedia later via a new ieee80211_media_init_with_lock() function.
This is required because the USB drivers need an adaptive mutex.

Besised "usbnet", a few other drivers are converted: vmx, wm, ixgbe / ixv.

mcx also now calls ifmedia_init_with_lock() because it needs to also use
an adaptive mutex.  The mcx driver still needs to be fully converted to
NET_MPSAFE.


To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/arm/amlogic/gxlphy.c
cvs rdiff -u -r1.57 -r1.58 src/sys/arch/x86/pci/if_vmx.c
cvs rdiff -u -r1.29 -r1.30 src/sys/dev/mii/acphy.c src/sys/dev/mii/atphy.c
cvs rdiff -u -r1.25 -r1.26 src/sys/dev/mii/amhphy.c src/sys/dev/mii/pnaphy.c
cvs rdiff -u -r1.36 -r1.37 src/sys/dev/mii/bmtphy.c src/sys/dev/mii/gphyter.c
cvs rdiff -u -r1.87 -r1.88 src/sys/dev/mii/brgphy.c
cvs rdiff -u -r1.38 -r1.39 src/sys/dev/mii/ciphy.c src/sys/dev/mii/rlphy.c
cvs rdiff -u -r1.46 -r1.47 src/sys/dev/mii/dmphy.c
cvs rdiff -u -r1.8 -r1.9 src/sys/dev/mii/etphy.c
cvs rdiff -u -r1.57 -r1.58 src/sys/dev/mii/exphy.c
cvs rdiff -u -r1.30 -r1.31 src/sys/dev/mii/gentbi.c
cvs rdiff -u -r1.31 -r1.32 src/sys/dev/mii/glxtphy.c
cvs rdiff -u -r1.55 -r1.56 src/sys/dev/mii/icsphy.c src/sys/dev/mii/sqphy.c
cvs rdiff -u -r1.32 -r1.33 src/sys/dev/mii/igphy.c
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/mii/ihphy.c \
    src/sys/dev/mii/ukphy_subr.c
cvs rdiff -u -r1.18 -r1.19 src/sys/dev/mii/ikphy.c
cvs rdiff -u -r1.59 -r1.60 src/sys/dev/mii/inphy.c
cvs rdiff -u -r1.42 -r1.43 src/sys/dev/mii/iophy.c
cvs rdiff -u -r1.9 -r1.10 src/sys/dev/mii/ipgphy.c
cvs rdiff -u -r1.3 -r1.4 src/sys/dev/mii/jmphy.c
cvs rdiff -u -r1.54 -r1.55 src/sys/dev/mii/lxtphy.c src/sys/dev/mii/mii.c \
    src/sys/dev/mii/qsphy.c
cvs rdiff -u -r1.64 -r1.65 src/sys/dev/mii/makphy.c
cvs rdiff -u -r1.12 -r1.13 src/sys/dev/mii/micphy.c
cvs rdiff -u -r1.2 -r1.3 src/sys/dev/mii/mii_ethersubr.c \
    src/sys/dev/mii/smscphy.c
cvs rdiff -u -r1.89 -r1.90 src/sys/dev/mii/mii_physubr.c
cvs rdiff -u -r1.69 -r1.70 src/sys/dev/mii/miivar.h
cvs rdiff -u -r1.14 -r1.15 src/sys/dev/mii/mvphy.c
cvs rdiff -u -r1.65 -r1.66 src/sys/dev/mii/nsphy.c
cvs rdiff -u -r1.44 -r1.45 src/sys/dev/mii/nsphyter.c src/sys/dev/mii/tqphy.c
cvs rdiff -u -r1.6 -r1.7 src/sys/dev/mii/rdcphy.c
cvs rdiff -u -r1.58 -r1.59 src/sys/dev/mii/rgephy.c
cvs rdiff -u -r1.67 -r1.68 src/sys/dev/mii/tlphy.c
cvs rdiff -u -r1.52 -r1.53 src/sys/dev/mii/ukphy.c
cvs rdiff -u -r1.11 -r1.12 src/sys/dev/pci/if_mcx.c
cvs rdiff -u -r1.668 -r1.669 src/sys/dev/pci/if_wm.c
cvs rdiff -u -r1.226 -r1.227 src/sys/dev/pci/ixgbe/ixgbe.c
cvs rdiff -u -r1.146 -r1.147 src/sys/dev/pci/ixgbe/ixv.c
cvs rdiff -u -r1.71 -r1.72 src/sys/dev/usb/if_atu.c
cvs rdiff -u -r1.11 -r1.12 src/sys/dev/usb/if_atureg.h \
    src/sys/dev/usb/if_otusvar.h src/sys/dev/usb/if_rumvar.h \
    src/sys/dev/usb/if_zydreg.h
cvs rdiff -u -r1.167 -r1.168 src/sys/dev/usb/if_aue.c
cvs rdiff -u -r1.129 -r1.130 src/sys/dev/usb/if_axe.c
cvs rdiff -u -r1.72 -r1.73 src/sys/dev/usb/if_axen.c
cvs rdiff -u -r1.69 -r1.70 src/sys/dev/usb/if_cdce.c
cvs rdiff -u -r1.90 -r1.91 src/sys/dev/usb/if_cue.c
cvs rdiff -u -r1.102 -r1.103 src/sys/dev/usb/if_kue.c
cvs rdiff -u -r1.4 -r1.5 src/sys/dev/usb/if_mos.c \
    src/sys/dev/usb/if_urtwreg.h
cvs rdiff -u -r1.58 -r1.59 src/sys/dev/usb/if_mue.c src/sys/dev/usb/if_zyd.c
cvs rdiff -u -r1.43 -r1.44 src/sys/dev/usb/if_otus.c
cvs rdiff -u -r1.68 -r1.69 src/sys/dev/usb/if_rum.c
cvs rdiff -u -r1.38 -r1.39 src/sys/dev/usb/if_run.c \
    src/sys/dev/usb/if_urndis.c
cvs rdiff -u -r1.7 -r1.8 src/sys/dev/usb/if_runvar.h
cvs rdiff -u -r1.67 -r1.68 src/sys/dev/usb/if_smsc.c
cvs rdiff -u -r1.76 -r1.77 src/sys/dev/usb/if_udav.c
cvs rdiff -u -r1.30 -r1.31 src/sys/dev/usb/if_upgt.c
cvs rdiff -u -r1.5 -r1.6 src/sys/dev/usb/if_upgtvar.h
cvs rdiff -u -r1.70 -r1.71 src/sys/dev/usb/if_upl.c
cvs rdiff -u -r1.64 -r1.65 src/sys/dev/usb/if_ural.c
cvs rdiff -u -r1.14 -r1.15 src/sys/dev/usb/if_uralvar.h
cvs rdiff -u -r1.37 -r1.38 src/sys/dev/usb/if_ure.c src/sys/dev/usb/usbnet.c
cvs rdiff -u -r1.75 -r1.76 src/sys/dev/usb/if_url.c
cvs rdiff -u -r1.23 -r1.24 src/sys/dev/usb/if_urtw.c
cvs rdiff -u -r1.83 -r1.84 src/sys/dev/usb/if_urtwn.c
cvs rdiff -u -r1.15 -r1.16 src/sys/dev/usb/if_urtwnvar.h
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/usb/usbnet.h
cvs rdiff -u -r1.51 -r1.52 src/sys/net/if_media.c
cvs rdiff -u -r1.70 -r1.71 src/sys/net/if_media.h
cvs rdiff -u -r1.58 -r1.59 src/sys/net80211/ieee80211.c
cvs rdiff -u -r1.22 -r1.23 src/sys/net80211/ieee80211_netbsd.h
cvs rdiff -u -r1.33 -r1.34 src/sys/net80211/ieee80211_var.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.