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4092996774
o Axe poll in trap.
o Axe IFF_POLLING flag from if_flags.
o Rework revision 1.21 (Giant removal), in such a way that
poll_mtx is not dropped during call to polling handler.
This fixes problem with idle polling.
o Make registration and deregistration from polling in a
functional way, insted of next tick/interrupt.
o Obsolete kern.polling.enable. Polling is turned on/off
with ifconfig.
Detailed kern_poll.c changes:
- Remove polling handler flags, introduced in 1.21. The are not
needed now.
- Forget and do not check if_flags, if_capenable and if_drv_flags.
- Call all registered polling handlers unconditionally.
- Do not drop poll_mtx, when entering polling handlers.
- In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx.
- In netisr_poll() axe the block, where polling code asks drivers
to unregister.
- In netisr_poll() and ether_poll() do polling always, if any
handlers are present.
- In ether_poll_[de]register() remove a lot of error hiding code. Assert
that arguments are correct, instead.
- In ether_poll_[de]register() use standard return values in case of
error or success.
- Introduce poll_switch() that is a sysctl handler for kern.polling.enable.
poll_switch() goes through interface list and enabled/disables polling.
A message that kern.polling.enable is deprecated is printed.
Detailed driver changes:
- On attach driver announces IFCAP_POLLING in if_capabilities, but
not in if_capenable.
- On detach driver calls ether_poll_deregister() if polling is enabled.
- In polling handler driver obtains its lock and checks IFF_DRV_RUNNING
flag. If there is no, then unlocks and returns.
- In ioctl handler driver checks for IFCAP_POLLING flag requested to
be set or cleared. Driver first calls ether_poll_[de]register(), then
obtains driver lock and [dis/en]ables interrupts.
- In interrupt handler driver checks IFCAP_POLLING flag in if_capenable.
If present, then returns.This is important to protect from spurious
interrupts.
Reviewed by: ru, sam, jhb
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| .. | ||
| agp.c | ||
| agp_ali.c | ||
| agp_amd.c | ||
| agp_amd64.c | ||
| agp_ati.c | ||
| agp_i810.c | ||
| agp_if.m | ||
| agp_intel.c | ||
| agp_nvidia.c | ||
| agp_sis.c | ||
| agp_via.c | ||
| agppriv.h | ||
| agpreg.h | ||
| agpvar.h | ||
| alpm.c | ||
| amdpm.c | ||
| dc21040reg.h | ||
| if_dc.c | ||
| if_dcreg.h | ||
| if_de.c | ||
| if_devar.h | ||
| if_mn.c | ||
| if_pcn.c | ||
| if_pcnreg.h | ||
| if_rl.c | ||
| if_rlreg.h | ||
| if_sf.c | ||
| if_sfreg.h | ||
| if_sis.c | ||
| if_sisreg.h | ||
| if_sk.c | ||
| if_skreg.h | ||
| if_ste.c | ||
| if_stereg.h | ||
| if_ti.c | ||
| if_tireg.h | ||
| if_tl.c | ||
| if_tlreg.h | ||
| if_vr.c | ||
| if_vrreg.h | ||
| if_wb.c | ||
| if_wbreg.h | ||
| if_xl.c | ||
| if_xlreg.h | ||
| intpm.c | ||
| intpmreg.h | ||
| locate.pl | ||
| ncr.c | ||
| ncrreg.h | ||
| ti_fw.h | ||
| ti_fw2.h | ||
| viapm.c | ||
| xmaciireg.h | ||
| xrpu.c | ||
| yukonreg.h | ||