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5be019040c
linux/drivers/net/ethernet
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Raed Salem 5be019040c net/mlx5e: IPsec: Add Connect-X IPsec Tx data path offload 
In the TX data path, spot packets with xfrm stack IPsec offload
indication.

Fill Software-Parser segment in TX descriptor so that the hardware
may parse the ESP protocol, and perform TX checksum offload on the
inner payload.

Support GSO, by providing the trailer data and ICV placeholder
so HW can fill it post encryption operation.

Padding alignment cannot be performed in HW (ConnectX-6Dx) due to
a bug. Software can overcome this limitation by adding NETIF_F_HW_ESP to
the gso_partial_features field in netdev so the packets being
aligned by the stack.

l4_inner_checksum cannot be offloaded by HW for IPsec tunnel type packet.

Note that for GSO SKBs, the stack does not include an ESP trailer,
unlike the non-GSO case.

Below is the iperf3 performance report on two server of 24 cores
Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz with ConnectX6-DX.
All the bandwidth test uses iperf3 TCP traffic with packet size 128KB.
Each tunnel uses one iperf3 stream with one thread (option -P1).
TX crypto offload shows improvements on both bandwidth
and CPU utilization.

----------------------------------------------------------------------
Mode            |  Num tunnel | BW     | Send CPU util | Recv CPU util
                |             | (Gbps) | (Average %)   | (Average %)
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(RX only)       | 1           | 4.7    | 4.2           | 3.5
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(RX only)       | 24          | 15.6   | 20            | 10
----------------------------------------------------------------------
Non-offload     | 1           | 4.6    | 4             | 5
----------------------------------------------------------------------
Non-offload     | 24          | 11.9   | 16            | 12
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(TX & RX)       | 1           | 11.9   | 2.1           | 5.9
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(TX & RX)       | 24          | 38     | 9.5           | 27.5
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(TX only)       | 1           | 4.7    | 0.7           | 5
----------------------------------------------------------------------
Cryto offload   |             |        |               |
(TX only)       | 24          | 14.5   | 6             | 20

Regression tests show no degradation on non-ipsec and
non-offload-ipsec traffics. The packet rate test uses pktgen UDP to
transmit on single CPU, the instructions and cycles are measured on
the transmit CPU.

before:
----------------------------------------------------------------------
Non-offload             | 1           | 4.7    | 4.2           | 5.1
----------------------------------------------------------------------
Non-offload             | 24          | 11.2   | 14            | 15
----------------------------------------------------------------------
Non-ipsec               | 1           | 28     | 4             | 5.7
----------------------------------------------------------------------
Non-ipsec               | 24          | 68.3   | 17.8          | 39.7
----------------------------------------------------------------------
Non-ipsec packet rate(BURST=1000 BC=5 NCPUS=1 SIZE=60)
13.56Mpps, 456 instructions/pkt, 191 cycles/pkt

after:
----------------------------------------------------------------------
Non-offload             | 1           | 4.69    | 4.2          | 5
----------------------------------------------------------------------
Non-offload             | 24          | 11.9   | 13.5          | 15.1
----------------------------------------------------------------------
Non-ipsec               | 1           | 29     | 3.2           | 5.5
----------------------------------------------------------------------
Non-ipsec               | 24          | 68.2   | 18.5          | 39.8
----------------------------------------------------------------------
Non-ipsec packet rate: 13.56Mpps, 472 instructions/pkt, 191 cycles/pkt

Signed-off-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2020-10-12 15:37:45 -07:00
..
3com Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
8390 lib8390: Use netif_msg_init to initialize msg_enable bits 2020-10-01 19:08:46 -07:00
adaptec starfire: switch from 'pci_' to 'dma_' API 2020-08-24 17:33:11 -07:00
aeroflex
agere
alacritech treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
allwinner net: allwinner: remove redundant irqsave and irqrestore in hardIRQ 2020-09-23 17:33:52 -07:00
alteon net: alteon: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:37 -07:00
altera
amazon drivers/net/ethernet: remove incorrectly formatted doc 2020-09-25 16:29:00 -07:00
amd net: sun3lance: Remove redundant checks in interrupt handler 2020-09-29 14:02:54 -07:00
apm net: xgene: Move shared header file into include/linux 2020-08-27 06:55:50 -07:00
apple
aquantia net: atlantic: implement media detect feature via phy tunables 2020-10-06 06:16:01 -07:00
arc drivers/net/ethernet: add some basic kdoc tags 2020-09-25 16:29:00 -07:00
atheros net: atheros: Remove WARN_ON(in_interrupt()) 2020-09-29 14:02:53 -07:00
aurora
broadcom bnxt_en: Add stored FW version info to devlink info_get cb. 2020-10-12 14:27:03 -07:00
brocade net: bna: Use fallthrough pseudo-keyword 2020-10-03 17:33:23 -07:00
cadence net: macb: move pdata to private header 2020-09-30 14:18:19 -07:00
calxeda drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
cavium net: thunderx: Use struct_size() helper in kmalloc() 2020-10-10 10:34:03 -07:00
chelsio cxgb4: convert tasklets to use new tasklet_setup() API 2020-10-08 16:48:21 -07:00
cirrus ethernet: cirrus: Remove unused macros 2020-08-18 12:54:47 -07:00
cisco net: enic: Cure the enic api locking trainwreck 2020-09-29 14:02:53 -07:00
cortina drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
davicom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dec drivers/net/ethernet: clean up unused assignments 2020-09-25 16:29:00 -07:00
dlink net: sundance: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:37 -07:00
emulex treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ezchip
faraday
freescale enetc: Migrate to PHYLINK and PCS_LYNX 2020-10-11 11:04:42 -07:00
fujitsu
google gve: Enable Link Speed Reporting in the driver. 2020-09-11 14:31:54 -07:00
hisilicon net: hns3: dump tqp enable status in debugfs 2020-09-29 13:14:24 -07:00
huawei Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
i825xx
ibm ibmvnic: create send_control_ip_offload 2020-09-28 16:06:08 -07:00
intel ice: fix adding IP4 IP6 Flow Director rules 2020-10-09 13:14:19 -07:00
marvell Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
mediatek treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mellanox net/mlx5e: IPsec: Add Connect-X IPsec Tx data path offload 2020-10-12 15:37:45 -07:00
micrel net: ksz884x: Use fallthrough pseudo-keyword 2020-10-03 17:33:23 -07:00
microchip drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
moxa
mscc net: mscc: ocelot: offload VLAN mangle action to VCAP IS1 2020-10-11 11:19:04 -07:00
myricom net: remove napi_hash_del() from driver-facing API 2020-09-10 13:08:46 -07:00
natsemi net: natsemi: Replace in_interrupt() usage. 2020-09-29 14:02:54 -07:00
neterion net: vxge: Remove in_interrupt() conditionals 2020-09-29 14:02:54 -07:00
netronome devlink: convert flash_update to use params structure 2020-09-25 17:20:57 -07:00
ni net: nixge: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:38 -07:00
nvidia
nxp
oki-semi drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
packetengines drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
pasemi
pensando ionic: add new bad firmware error code 2020-10-02 16:30:01 -07:00
qlogic qed/qed_ll2: Replace one-element array with flexible-array member 2020-09-28 18:47:48 -07:00
qualcomm drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
rdc
realtek r8169: factor out handling rtl8169_stats 2020-10-10 10:46:07 -07:00
renesas Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
rocker Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
samsung drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
seeq
sfc net: sfc: Use GFP_KERNEL in efx_ef10_try_update_nic_stats() 2020-09-29 14:02:54 -07:00
sgi
silan net: silan: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:38 -07:00
sis drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
smsc net: smc91x: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:38 -07:00
socionext net: ethernet: ave: Replace alloc_etherdev() with devm_alloc_etherdev() 2020-09-28 12:37:49 -07:00
stmicro Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
sun net: sunbmac: Replace in_interrupt() usage 2020-09-29 14:02:54 -07:00
synopsys drivers/net/ethernet: clean up unused assignments 2020-09-25 16:29:00 -07:00
tehuti drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
ti drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
toshiba net: tc35815: switch from 'pci_' to 'dma_' API 2020-09-08 20:16:19 -07:00
tundra
via Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
wiznet
xilinx drivers/net/ethernet: remove incorrectly formatted doc 2020-09-25 16:29:00 -07:00
xircom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xscale
dnet.c drivers/net/ethernet: clean up unused assignments 2020-09-25 16:29:00 -07:00
dnet.h
ec_bhf.c
ethoc.c drivers/net/ethernet: clean up mis-targeted comments 2020-09-25 16:29:00 -07:00
fealnx.c
jme.c net: jme: convert tasklets to use new tasklet_setup() API 2020-09-14 13:02:37 -07:00
jme.h
Kconfig
korina.c
lantiq_etop.c
lantiq_xrx200.c net: lantiq: Add locking for TX DMA channel 2020-09-23 18:01:03 -07:00
Makefile