From 9240aed7779eb28e8b36afbed9b59484fd2c6539 Mon Sep 17 00:00:00 2001 From: marius Date: Wed, 27 Jan 2016 22:31:08 +0000 Subject: Sync the e1000 drivers with what's in head as of r294327, modulo parts that don't apply to stable/10 (driver API, if_inc_counter(), RSS changes etc.) and modulo r287465 (which reportedly breaks igb(4)), i. e. assorted fixes and improvements only: o MFC r267385 (partial): - Don't compare bus_dma map pointers for static DMA allocations against NULL to determine if bus_dmamap_unload() or bus_dmamem_free() should be called. Instead, check the associated bus and virtual addresses. - Don't clear static DMA maps to NULL. o MFC r284933: Delete the refernce to VLAN handling being disabled by default. This is no longer the case. [1] o MFC r285639: Add an adapter CORE lock in the DDB hook em_dump_queue to avoid WITNESS panic in em_init_locked() while debugging. o MFC r285879: - Remove unused txd_saved. - Intialize txd_upper, txd_lower and txd_used at declaration. o MFC r286162: Free mbufs when busdma loading fails. o MFC r286829: Add capability to disable CRC stripping as it breaks IPMI/BMC capabilities on certain adatpers. [2] o MFC r286831: [3] - Increase EM_MAX_SCATTER to 64 such that the size of em_xmit():: segs[EM_MAX_SCATTER] doesn't get overrun by things like NFS that can and do shove more than 32 segs when being used with em(4) and TSO4. - Update tso handling code in em_xmit() with update from jhb@ - Set if_hw_tsomax, if_hw_tsomaxsegcount and if_hw_tsomaxsegsize to appropriate values. - Define a TSO workaround "magic" number of 4 that is used to avoid an alignment issue in hardware. - Change a couple of integer values that were used as booleans to actual bool types. - Ensure that em_enable_intr() enables the appropriate mask of interrupts and not just a hardcoded define of values. o MFC r286832: e1000/if_lem.c bump to 1.1.0 o MFC r286833: Bump all copywrite dates to 2015. o MFC r287112: Style/whitespace cleanup in shared/common code. o MFC r293331: - Switch em(4) to the extended RX descriptor format. - Split rxbuffer and txbuffer apart to support the new RX descriptor format structures. Move rxbuffer manipulation to em_setup_rxdesc() to unify the new behavior changes. - Add a RSSKEYLEN macro for help in generating the RSSKEY data structures in the card. - Change em_receive_checksum() to process the new rxdescriptor format status bit. o MFC r293332: Disable the reuse of checksum offload context descriptors in the case of multiple queues in em(4). Document errata in the code. o MFC r293854: Given that em(4), lem(4) and igb(4) hardware doesn't require the alignment guarantees provided by m_defrag(9), use m_collapse(9) instead for performance reasons. While at it, sanitize the statistics softc members, i. e. retire unused ones and add SYSCTL nodes missing for actually used ones. PR: 118693 [1], 161277 [2], 195078 [3], 199174 [3], 200221 [3] --- share/man/man4/em.4 | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'share/man/man4') diff --git a/share/man/man4/em.4 b/share/man/man4/em.4 index a06261c..7901331 100644 --- a/share/man/man4/em.4 +++ b/share/man/man4/em.4 @@ -31,7 +31,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 11, 2011 +.Dd August 16, 2015 .Dt EM 4 .Os .Sh NAME @@ -205,6 +205,11 @@ Tunables can be set at the prompt before booting the kernel or stored in .Xr loader.conf 5 . .Bl -tag -width indent +.It Va hw.em.disable_crc_stripping +Disable or enable hardware stripping of CRC field. +This is mostly useful on BMC/IPMI shared interfaces where stripping the CRC +causes remote access over IPMI to fail. +Default 0 (enabled). .It Va hw.em.eee_setting Disable or enable Energy Efficient Ethernet. Default 1 (disabled). @@ -307,10 +312,5 @@ The driver was written by .An Intel Corporation Aq freebsd@intel.com . .Sh BUGS -Hardware-assisted VLAN processing is disabled by default. -You can enable it on an -.Nm -interface using -.Xr ifconfig 8 . .Pp Activating EM_MULTIQUEUE support requires MSI-X features. -- cgit v1.1