src/sys/dev/mlx5, branch stable/10

MFC r362045:

2020-06-18T10:41:51+00:00

Make sure packets generated by raw IP code is let through by mlx5en(4).

Allow the TCP header to reside in the mbuf following the IP header.
Else such packets will get dropped.

Backtrace:
mlx5e_sq_xmit()
mlx5e_xmit()
ether_output_frame()
ether_output()
ip_output_send()
ip_output()
rip_output()
sosend_generic()
sosend()
kern_sendit()
sendit()
sys_sendto()
amd64_syscall()
fast_syscall_common()

Sponsored by:	Mellanox Technologies

MFC r362044:

2020-06-18T10:31:21+00:00

Extend use of unlikely() in the fast path, in mlx5en(4).

Typically the TCP/IP headers fit within the first mbuf and should not
trigger any of the error cases. Use unlikely() for these cases.

No functional change.

Sponsored by:	Mellanox Technologies

MFC r362043:

2020-06-18T10:17:36+00:00

Use const keyword when parsing the TCP/IP header in the fast path in mlx5en(4).

When parsing the TCP/IP header in the fast path, make it clear by using
the const keyword, no fields are to be modified inside the transmitted
packet.

No functional change.

Sponsored by:	Mellanox Technologies

MFC r359653:

2020-04-13T09:02:17+00:00

Count number of times transmit ring is out of buffers in mlx5en(4).

Differential Revision:	https://reviews.freebsd.org/D24273
Sponsored by:	Mellanox Technologies

MFC r359654:

2020-04-13T08:33:49+00:00

Ensure a minimum inline size of 16 bytes in mlx5en(4).

This includes 14 bytes of ethernet header and 2 bytes of VLAN header.

This allows for making assumptions about the inline size limit
in the fast transmit path later on.

Use a signed integer variable to catch underflow.

Sponsored by:	Mellanox Technologies

MFC r355447:

2019-12-25T09:34:16+00:00

Fix compilation issue with mlx5core and sparc64 (gcc48):

sys/dev/mlx5/mlx5_en/mlx5_en_tx.c:335: error: requested alignment is not a constant

Sponsored by:	Mellanox Technologies

MFC r348603:

2019-06-09T08:22:38+00:00

Make sure the DMA tags get freed in mlx5en(4).

Sponsored by:	Mellanox Technologies

MFC r341585:

2018-12-12T13:14:41+00:00

mlx5en: Improve configuration of HW LRO.

In order to enable HW LRO, both the "hw_lro" sysctl in the mlx5en(4) config
space must be set, and the ifconfig(8) LRO capability must be set. Any other
settings will disable HW LRO.

Sponsored by:   Mellanox Technologies

MFC r339584:

2018-10-25T14:12:48+00:00

mlx5: Notify user that the ConnectX-6 shutdown its port due to power limitation

If power exceed the slot limit, or slot limit is unknown the ConnectX-6
firmware will shutdown its port.
Inform the user via debug message.

Approved by:    hselasky (mentor), kib (mentor)
Sponsored by:   Mellanox Technologies

MFC r338492:

2018-09-10T08:10:52+00:00

Add support for receive side scaling stride, RSSS, in mlx5en(4).

The receive side scaling stride parameter is a value which define the interval
between active receive side queues. The traffic for the inactive queues is
redirected to the nearest active queue by use of modulus. The default value
of this parameter is one, which means all receive side queues are used.

The point of this feature is to redirect more traffic to fewer receive side
queues in order to take more advantage of sorted large receive offload,
sorted LRO. The sorted LRO works better when more packets are accumulated
per service interval.

Sponsored by:		Mellanox Technologies