src/sys/modules/em, branch releng/12.2

MFC r345350, r346441, r346765

2019-09-06T17:21:21Z

r345350: Rename fuse(4) to fusefs(4) This makes it more consistent with other filesystems, which all end in "fs", and more consistent with its mount helper, which is already named "mount_fusefs". Reviewed by: cem, rgrimes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19649 r346441: Use symlinks for kernel modules rather than hardlinks When aliasing a kernel module to a different name (ie if_igb for if_em), it's better to use symlinks than hard links. kldxref will omit entries for the links, ensuring that the loaded module has the correct name. Reviewed by: imp Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19979 r346765: Don't symlink fusefs.ko to fuse.ko on PPC Some PPC systems (PowerNV) use msdosfs for /boot, which can't handle either symlinks or hardlinks. So on PPC, copy the module instead. This change fixes installkernel on such systems after r345350. Reported by: Brandon Bergren Reviewed by: jhibbits, rgrimes MFC-With: 345350, 346441 Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19993

Hard link if_igb.ko to if_em.ko. Use a LINK directive to ensure that

2017-10-10T19:14:40Z

this is more friendly to the tree. Tested this with loader.conf:if_igb_load="YES" and it does the right thing. Submitted by: Ian Lepore

Fix symlink if_igb.ko in -current such that its relative and doesn't

2017-10-07T23:33:14Z

end up with non-standard DESTDIR information in its symlink. This can happen very trivially if the release scripts are used. Sponsored by: Limelight Networks

sys/modules: normalize .CURDIR-relative paths to SRCTOP

2017-03-04T10:10:17Z

This simplifies make output/logic Tested with: `cd sys/modules; make ALL_MODULES=` on amd64 MFC after: 1 month Sponsored by: Dell EMC Isilon

Deprecate kernel configuration option EM_MULTIQUEUE now that the em(4)

2017-01-12T14:38:18Z

driver conforms to iflib.

Set CFLAGS correctly for sys/modules/em

2017-01-10T21:21:00Z

Unbreak gcc sparc64 builds (or any gcc build that uses em(4)). Reported by: lidl@freebsd.org

Migrate e1000 to the IFLIB framework:

2017-01-10T03:23:22Z

- em(4) igb(4) and lem(4) - deprecate the igb device from kernel configurations - create a symbolic link in /boot/kernel from if_em.ko to if_igb.ko Devices tested: - 82574L - I218-LM - 82546GB - 82579LM - I350 - I217 Please report problems to freebsd-net@freebsd.org Partial review from jhb and suggestions on how to *not* brick folks who originally would have lost their igbX device. Submitted by: mmacy@nextbsd.org MFC after: 2 weeks Relnotes: yes Sponsored by: Limelight Networks and Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D8299

Include opt_em.h now that there are actual kernel compile options for em(4).

2015-06-09T14:31:18Z

Submitted by: jfv MFC after: 2 week Sponsored by: Limelight Networks

Change EM_MULTIQUEUE to a real kernconf entry and enable support for

2015-06-03T18:01:09Z

up to 2 rx/tx queues for the 82574. Program the 82574 to enable 5 msix vectors, assign 1 to each rx queue, 1 to each tx queue and 1 to the link handler. Inspired by DragonFlyBSD, enable some RSS logic for handling tx queue handling/processing. Move multiqueue handler functions so that they line up better in a diff review to if_igb.c Always enqueue tx work to be done in em_mq_start, if unable to acquire the TX lock, then this will be processed in the background later by the taskqueue. Remove mbuf argument from em_start_mq_locked() as the work is always enqueued. (stolen from igb) Setup TARC, TXDCTL and RXDCTL registers for better performance and stability in multiqueue and singlequeue implementations. Handle Intel errata 3 and generic multiqueue behavior with the initialization of TARC(0) and TARC(1) Bind interrupt threads to cpus in order. (stolen from igb) Add 2 new DDB functions, one to display the queue(s) and their settings and one to reset the adapter. Primarily used for debugging. In the multiqueue configuration, bump RXD and TXD ring size to max for the adapter (4096). Setup an RDTR of 64 and an RADV of 128 in multiqueue configuration to cut down on the number of interrupts. RADV was arbitrarily set to 2x RDTR and can be adjusted as needed. Cleanup the display in top a bit to make it clearer where the taskqueue threads are running and what they should be doing. Ensure that both queues are processed by em_local_timer() by writing them both to the IMS register to generate soft interrupts. Ensure that an soft interrupt is generated when em_msix_link() is run so that any races between assertion of the link/status interrupt and a rx/tx interrupt are handled. Document existing tuneables: hw.em.eee_setting, hw.em.msix, hw.em.smart_pwr_down, hw.em.sbp Document use of hw.em.num_queues and the new kernel option EM_MULTIQUEUE Thanks to Intel for their continued support of FreeBSD. Reviewed by: erj jfv hiren gnn wblock Obtained from: Intel Corporation MFC after: 2 weeks Relnotes: Yes Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D1994

Move most of the 15 variations on generating opt_inet.h and

2014-08-04T22:37:02Z

opt_inet6.h into kmod.mk by forcing almost everybody to eat the same dogfood. While at it, consolidate the opt_bpf.h and opt_mroute.h targets here too.