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9ed4050c0d
linux/drivers/net/ethernet
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Ivan Khoronzhuk 9ed4050c0d net: ethernet: ti: cpsw: add XDP support 
Add XDP support based on rx page_pool allocator, one frame per page.
Page pool allocator is used with assumption that only one rx_handler
is running simultaneously. DMA map/unmap is reused from page pool
despite there is no need to map whole page.

Due to specific of cpsw, the same TX/RX handler can be used by 2
network devices, so special fields in buffer are added to identify
an interface the frame is destined to. Thus XDP works for both
interfaces, that allows to test xdp redirect between two interfaces
easily. Also, each rx queue have own page pools, but common for both
netdevs.

XDP prog is common for all channels till appropriate changes are added
in XDP infrastructure. Also, once page_pool recycling becomes part of
skb netstack some simplifications can be added, like removing
page_pool_release_page() before skb receive.

In order to keep rx_dev while redirect, that can be somehow used in
future, do flush in rx_handler, that allows to keep rx dev the same
while redirect. It allows to conform with tracing rx_dev pointed
by Jesper.

Also, there is probability, that XDP generic code can be extended to
support multi ndev drivers like this one, using same rx queue for
several ndevs, based on switchdev for instance or else. In this case,
driver can be modified like exposed here:
https://lkml.org/lkml/2019/7/3/243

Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-08 14:58:04 -07:00
..
3com treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
8390 SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
adaptec treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
aeroflex treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
agere treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
alacritech treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235 2019-06-19 17:09:07 +02:00
allwinner net: ethernet: allwinner: Remove unneeded memset 2019-07-05 15:25:55 -07:00
alteon treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
altera treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
amazon Revert "net: ena: ethtool: add extra properties retrieval via get_priv_flags" 2019-06-26 09:07:39 -07:00
amd treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
apm treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
apple treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
aquantia Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-27 21:06:39 -07:00
arc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
atheros atl1c: remove redundant assignment to variable tpd_req 2019-07-03 11:32:39 -07:00
aurora treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
broadcom net: ethernet: broadcom: bcm63xx_enet: Remove unneeded memset 2019-07-01 19:29:19 -07:00
brocade treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 292 2019-06-05 17:36:38 +02:00
cadence macb: fix build warning for !CONFIG_OF 2019-07-08 12:43:07 -07:00
calxeda net/ethernet: using dev_get_drvdata directly 2019-07-05 15:25:04 -07:00
cavium net: lio_core: fix potential sign-extension overflow on large shift 2019-06-18 21:00:40 -04:00
chelsio cxgb4: Add MPS refcounting for alloc/free mac filters 2019-06-24 14:54:06 -07:00
cirrus treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cisco treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
cortina net: gemini: remove unnecessary assert 2019-04-18 17:06:15 -07:00
davicom treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
dec SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
dlink treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
emulex be2net: fix link failure after ethtool offline test 2019-06-22 09:40:50 -04:00
ezchip treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 291 2019-06-05 17:36:38 +02:00
faraday treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
freescale Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-17 20:20:36 -07:00
fujitsu treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
google gve: fix unused variable/label warnings 2019-07-08 12:40:58 -07:00
hisilicon net: hns3: set maximum length to resp_data_len for exceptional case 2019-07-05 15:39:38 -07:00
hp treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 86 2019-05-24 17:37:52 +02:00
huawei hinic: add fw version query 2019-07-07 22:15:12 -07:00
i825xx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ibm ibmvnic: Fix unchecked return codes of memory allocations 2019-06-09 19:51:28 -07:00
intel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2019-07-04 12:48:21 -07:00
marvell Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
mediatek net: ethernet: mediatek: Fix overlapping capability bits. 2019-07-04 12:37:10 -07:00
mellanox net: core: page_pool: add user refcnt and reintroduce page_pool_destroy 2019-07-08 14:58:04 -07:00
micrel treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
microchip treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
moxa treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mscc ocelot: remove unused variable 'rc' in vcap_cmd() 2019-06-09 20:11:53 -07:00
myricom treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
natsemi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
neterion treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
netronome nfp: Use spinlock_t instead of struct spinlock 2019-07-05 16:17:44 -07:00
ni treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
nuvoton treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
nvidia treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
nxp treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
oki-semi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 340 2019-06-05 17:37:07 +02:00
packetengines treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
pasemi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
qlogic qlcnic: remove redundant assignment to variable err 2019-07-03 11:33:55 -07:00
qualcomm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-17 20:20:36 -07:00
rdc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1 2019-05-21 11:28:39 +02:00
realtek r8169: sync few chip names with vendor driver 2019-07-07 13:05:40 -07:00
renesas net: sh_eth: fix mdio access in sh_eth_close() for R-Car Gen2 and RZ/A1 SoCs 2019-05-29 13:24:54 -07:00
rocker Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
samsung treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
seeq treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sfc sfc: Remove 'PCIE error reporting unavailable' 2019-07-08 12:16:48 -07:00
sgi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
silan treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
sis sis900: remove TxIDLE 2019-06-27 22:38:23 -07:00
smsc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
socionext net: core: page_pool: add user refcnt and reintroduce page_pool_destroy 2019-07-08 14:58:04 -07:00
stmicro net: stmmac: Enable dwmac4 jumbo frame more than 8KiB 2019-07-04 12:33:12 -07:00
sun net: ethernet: sun: remove redundant assignment to variable err 2019-07-04 12:12:13 -07:00
synopsys treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
tehuti treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ti net: ethernet: ti: cpsw: add XDP support 2019-07-08 14:58:04 -07:00
toshiba ps3_gelic: Use [] to denote a flexible array member 2019-06-18 10:43:20 -07:00
tundra treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
via net: ipv4: provide __rcu annotation for ifa_list 2019-06-02 18:08:36 -07:00
wiznet net: ethernet: wiznet: w5X00 add device tree support 2019-06-12 09:52:04 -07:00
xilinx net: axienet: move use of resource after validity check 2019-06-13 22:41:24 -07:00
xircom treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
xscale treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
dnet.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
dnet.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ec_bhf.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
ethoc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
fealnx.c
jme.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 195 2019-05-30 11:29:22 -07:00
jme.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 195 2019-05-30 11:29:22 -07:00
Kconfig gve: Add basic driver framework for Compute Engine Virtual NIC 2019-07-01 19:36:35 -07:00
korina.c
lantiq_etop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
lantiq_xrx200.c net: ethernet: support of_get_mac_address new ERR_PTR error 2019-05-07 12:22:47 -07:00
Makefile gve: Add basic driver framework for Compute Engine Virtual NIC 2019-07-01 19:36:35 -07:00
netx-eth.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00