Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC 254576: Stop an ipoib interface before detaching it.

PR: kern/181225

MFC/backport core kernel and userspace parts of r237263 (TCP_OFFLOAD
rework). MFC r237563, r239511, r243603, r245915, r245916, r245919,
r245921, r245922, r245924, r245925, r245932, r245934 too.

Build tested with make universe.

r237263:
- Updated TOE support in the kernel.
...

r237563:
Fix clang warning when compiling iw_cxgb.

r239511:
Correctly handle the case where an inp has already been dropped by the time
the TOE driver reports that an active open failed. toe_connect_failed is
supposed to handle this but it should be provided the inpcb instead of the
tcpcb which may no longer be around.

r243603:
Make sure that tcp_timer_activate() correctly sees TCP_OFFLOAD (or not).

r245915:
Heed SO_NO_OFFLOAD.

r245916:
Teach toe_4tuple_check() to deal with IPv6 4-tuples too.

r245919:
Add TCP_OFFLOAD hook in syncache_respond for IPv6 too, just like the one
that exists for IPv4.

r245921:
There is no need to call into the TOE driver twice in pru_rcvd (tod_rcvd
and then tod_output right after that).

r245922:
Avoid NULL dereference in nd6_storelladdr when no mbuf is provided. It
is called this way from a couple of places in the OFED code. (toecore
calls it too but that's going to change shortly).

r245924:
Move lle_event to if_llatbl.h

lle_event replaced arp_update_event after the ARP rewrite and ended up
in if_ether.h simply because arp_update_event used to be there too.
IPv6 neighbor discovery is going to grow lle_event support and this is a
good time to move it to if_llatbl.h.

The two in-tree consumers of this event - OFED and toecore - are not
affected.

r245925:
Generate lle_event in the IPv6 neighbor discovery code too.

r245932:
Teach toe_l2_resolve to resolve IPv6 destinations too.

r245934:
Add checks for SO_NO_OFFLOAD in a couple of places that I missed earlier
in r245915.

MFC 249066:
Check for SS_NBIO in the socket state field rather than socket buffer
flags.

MFC r227293 (by ed):
Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

This means that their use is restricted to a single C file.

MFC: r227309 (partial)

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.

The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.

MFC r242933:

Redo r242842, now actually fixing the warnings, as follows:
- In sys/ofed/drivers/infiniband/core/cma.c, an enum struct member is
interpreted as an int, so cast it to an int.
- In sys/ofed/drivers/infiniband/core/ud_header.c, initialize the
packet_length variable in ib_ud_header_init(), to prevent undefined
behaviour.
- In sys/ofed/drivers/infiniband/ulp/sdp/sdp_rx.c, call rdma_notify()
with the correct enum type and value.
- In sys/ofed/include/linux/pci.h, change the PCI_DEVICE and PCI_VDEVICE
macros to use C99 struct initializers, so additional members can be
overridden.

Reviewed by: delphij, Garrett Cooper <yanegomi@gmail.com>

MFC r241844:
remove duplicate semicolons where possible.

Approved by: cperciva (implicit)

Merge r240082.

Remove unneeded ipfw headers introduced in r213447 from Infiniband code.

MFC 233040,233198,233870,234183:
Add OFED and the associated options and drivers to x86 LINT builds:
- Fix build with INET6 disabled.
- Fix build of OFED bits with debugging options enabled.
- Fix build on i386.
- Mark 'sdp' as requiring 'inet'.
- Always include "opt_inet.h" and "opt_inet6.h" and modify the IB
driver Makefiles to honor WITH/WITHOUT_INET/INET6/_SUPPORT options
to determine what should be enabled during a module build.
- Fix the mlxen(4) driver and the core IB code to compile without
if INET is disabled (including when both INET and INET6 are disabled).

MFC 234182:
Don't update if_obytes when transmitting packets. That is already done
in IFQ_HANDOFF() when the packet is passed to the start routine, so doing
it here resulted in double counting.

MFC r227458, r226436:

- change "is is" to "is" or "it is"
- change "the the" to "the"
- other typo fixes

Approved by: lstewart

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

In ipoib_cm_handle_rx_wc(): Count incoming packets and
bytes toward incoming counters.

Reviewed by: jeff

Even though this block is not compiled currently, properly assign
CSUM_TSO to if_hwassist rather than if_capabilities to avoid future
errors.

Reviewed by: jeff

Allow the ofed modules to be compiled on i386.

Reviewed by: jeff

- Merge in OFED 1.5.3 from projects/ofed/head