If removing a node of type FS_TYPE_FLOW_DEST we lock the flow group too
late. This can lead to a deadlock with fs_add_dst_fg().
PR: 274715
Reviewed by: kib
Tested by: mm
Differential Revision: https://reviews.freebsd.org/D42368
(cherry picked from commit a592812327deaf69ab226afc5c8a01af43dc03c2)
The specification for the Toeplitz function doesn't require to set the key
explicitly to be symmetric. In case a symmetric functionality is required
a symmetric key can be simply used.
Wrongly forcing the algorithm to symmetric causes the wrong packet
distribution and a performance degradation.
Link: https://lore.kernel.org/r/20190723065733.4899-7-leon@kernel.org
Fixes: 28d6137008b2 ("IB/mlx5: Add RSS QP support")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Alex Vainman <alexv@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
[khng: cherry-picked from Linux
b7165bd0d6cbb93732559be6ea8774653b204480]
Sponsored by: Juniper Networks, Inc.
MFC after: 7 days
Reviewed by: kib, zlei
Differential Revision: https://reviews.freebsd.org/D42178
(cherry picked from commit 813d981e1e78daffde4b2a05df35d054fcb4343f)
Failure to get mbufs may be transient.
Don't permanently fail to open the channels due to lack of mbufs.
This also makes modifying channel parameters faster.
MFC after: 1 week
Sponsored by: NVIDIA Networking
Implement one CQ modify function supporting all firmware versions,
instead of having more variants of CQ modify.
MFC after: 1 week
Sponsored by: NVIDIA Networking
When using hardware pacing, this value can be increased, because more SQ's
means more EQ events aswell. Make it tunable, hw.mlx5.comp_eq_size .
MFC after: 1 week
Sponsored by: NVIDIA Networking
Expect that drivers call into the network stack with the net epoch
entered. This has already been the fact since early 2020. The net
interrupts, that are marked with INTR_TYPE_NET, were entering epoch
since 511d1afb6b. For the taskqueues there is NET_TASK_INIT() and
all drivers that were known back in 2020 we marked with it in
6c3e93cb5a. However in e87c494015 we took conservative approach
and preferred to opt-in rather than opt-out for the epoch.
This change not only reverts e87c494015 but adds a safety belt to
avoid panicing with INVARIANTS if there is a missed driver. With
INVARIANTS we will run in_epoch() check, print a warning and enter
the net epoch. A driver that prints can be quickly fixed with the
IFF_NEEDSEPOCH flag, but better be augmented to properly enter the
epoch itself.
Note on TCP LRO: it is a backdoor to enter the TCP stack bypassing
some layers of net stack, ignoring either old IFF_KNOWSEPOCH or the
new IFF_NEEDSEPOCH. But the tcp_lro_flush_all() asserts the presence
of network epoch. Indeed, all NIC drivers that support LRO already
provide the epoch, either with help of INTR_TYPE_NET or just running
NET_EPOCH_ENTER() in their code.
Reviewed by: zlei, gallatin, erj
Differential Revision: https://reviews.freebsd.org/D39510
Summary: IFNET_RLOCK() is not sufficient, the epoch needs entered.
Reviewed by: hselasky
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D38711
The 0b70e3e78b changed the original design of a single entry point
into pfil(9) chains providing separate functions for the filtering
points that always provide mbufs and know the direction of a flow.
The motivation was to reduce branching. The logical continuation
would be to do the same for the filtering points that always provide
a memory pointer and retire the single entry point.
o Hooks now provide two functions: one for mbufs and optional for
memory pointers.
o pfil_hook_args() has a new member and pfil_add_hook() has a
requirement to zero out uninitialized data. Bump PFIL_VERSION.
o As it was before, a hook function for a memory pointer may realloc
into an mbuf. Such mbuf would be returned via a pointer that must
be provided in argument.
o The only hook that supports memory pointers is ipfw:default-link.
It is rewritten to provide two functions.
o All remaining uses of pfil_run_hooks() are converted to
pfil_mem_in().
o Transparent union of pfil_packet_t and tricks to fix pointer
alignment are retired. Internal pfil_realloc() reduces down to
m_devget() and thus is retired, too.
Reviewed by: mjg, ocochard
Differential revision: https://reviews.freebsd.org/D37977
IFCAP2_XXX constants are integers, they do not need shift for the
definition. But their usage as bitmask for if_capenable2 does require
shift. Add convenience macro IFCAP2_BIT() for consumers.
Fix the only existing consumer, mlx5(4) RXTLS enable bits.
Reported by: jhb
Reviewed by: jhb, jhibbits, hselasky
Coverity CID: 1501659
Sponsored by: NVIDIA networking
Differential revision: https://reviews.freebsd.org/D37862
The way that the clock is synchronized between the system and the current mlx5 for the purposes of the M_TSTMP
being carried we loose a lot of precision. Instead lets change the math that calculates this to separate out
the seconds/nanoseconds and operate on the two values so we don't get overflow instead of just
shifting the value down and loosing precision.
Reviewed by: kib, hselasky
Sponsored by: Netflix Inc
Differential Revision: https://reviews.freebsd.org/D36327
With clang 15, the following -Werror warning is produced:
sys/dev/mlx5/mlx5_ib/mlx5_ib_devx.c:1926:6: error: variable 'num_alloc_xa_entries' set but not used [-Werror,-Wunused-but-set-variable]
int num_alloc_xa_entries = 0;
^
The 'num_alloc_xa_entries' variable appears to have been a debugging aid
that has never been used for anything, so remove it.
MFC after: 3 days
With clang 15, the following -Werror warning is produced:
sys/dev/mlx5/mlx5_core/mlx5_fs_tree.c:1408:15: error: variable 'candidate_group_num' set but not used [-Werror,-Wunused-but-set-variable]
unsigned int candidate_group_num = 0;
^
The 'candidate_group_num' variable appears to have been a debugging aid
that has never been used for anything, so remove it.
MFC after: 3 days
In the clean_mr() error path the 'mr' should be freed.
Linux commit:
5942d8ae411775b76e5e1ab0cce57b0666516f2d
PR: 264653
MFC after: 1 week
Sponsored by: NVIDIA Networking
While at it, fix double initialization of the "drv_ioctl_data_d" structure
and the "mask" variable.
Reviewed by: kib@
MFC after: 1 week
Sponsored by: NVIDIA Networking
The page size specified for RQ, SQ and CQ is always in units of 4KBytes.
Make sure we subtract MLX5_ADAPTER_PAGE_SHIFT, 12, instead of PAGE_SHIFT
which may vary. This fixes support for using the mlx5en driver on systems
having non-4K page size.
Linux commit:
68cdf5d6e91068c98d6091b193dc7a5ab7dcf5eb
MFC after: 1 week
Sponsored by: NVIDIA Networking
