kernel/git/stable/linux.git/drivers/net/vmxnet3, branch linux-5.8.y

vmxnet3: fix cksum offload issues for non-udp tunnels

2020-10-14T09:55:53+00:00

[ Upstream commit 1dac3b1bc66dc68dbb0c9f43adac71a7d0a0331a ] Commit dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") added support for encapsulation offload. However, the inner offload capability is to be restrictued to UDP tunnels. This patch fixes the issue for non-udp tunnels by adding features check capability and filtering appropriate features for non-udp tunnels. Fixes: dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

vmxnet3: use correct tcp hdr length when packet is encapsulated

2020-08-19T06:26:59+00:00

[ Upstream commit 8a7f280f29a80f6e0798f5d6e07c5dd8726620fe ] Commit dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") added support for encapsulation offload. However, while calculating tcp hdr length, it does not take into account if the packet is encapsulated or not. This patch fixes this issue by using correct reference for inner tcp header. Fixes: dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") Signed-off-by: Ronak Doshi Acked-by: Guolin Yang Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

vmxnet3: allow rx flow hash ops only when rss is enabled

2020-06-02T22:12:33+00:00

It makes sense to allow changes to get/set rx flow hash callback only when rss is enabled. This patch restricts get_rss_hash_opts and set_rss_hash_opts methods to allow querying and configuring different Rx flow hash configurations only when rss is enabled Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss()

2020-06-01T18:52:59+00:00

The value adapter->rss_conf is stored in DMA memory, and it is assigned to rssConf, so rssConf->indTableSize can be modified at anytime by malicious hardware. Because rssConf->indTableSize is assigned to n, buffer overflow may occur when the code "rssConf->indTable[n]" is executed. To fix this possible bug, n is checked after being used. Signed-off-by: Jia-Ju Bai Signed-off-by: David S. Miller

vmxnet3: use correct hdr reference when packet is encapsulated

2020-05-29T19:13:49+00:00

'Commit dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support")' added support for encapsulation offload. However, while preparing inner tso packet, it uses reference to outer ip headers. This patch fixes this issue by using correct reference for inner headers. Fixes: dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

vmxnet3: update to version 4

2020-05-28T23:26:48+00:00

With all vmxnet3 version 4 changes incorporated in the vmxnet3 driver, the driver can configure emulation to run at vmxnet3 version 4, provided the emulation advertises support for version 4. Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

vmxnet3: add geneve and vxlan tunnel offload support

2020-05-28T23:26:48+00:00

Vmxnet3 version 3 device supports checksum/TSO offload. Thus, vNIC to pNIC traffic can leverage hardware checksum/TSO offloads. However, vmxnet3 does not support checksum/TSO offload for Geneve/VXLAN encapsulated packets. Thus, for a vNIC configured with an overlay, the guest stack must first segment the inner packet, compute the inner checksum for each segment and encapsulate each segment before transmitting the packet via the vNIC. This results in significant performance penalty. This patch will enhance vmxnet3 to support Geneve/VXLAN TSO as well as checksum offload. Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

vmxnet3: add support to get/set rx flow hash

2020-05-28T23:26:48+00:00

With vmxnet3 version 4, the emulation supports multiqueue(RSS) for UDP and ESP traffic. A guest can enable/disable RSS for UDP/ESP over IPv4/IPv6 by issuing commands introduced in this patch. ESP ipv6 is not yet supported in this patch. This patch implements get_rss_hash_opts and set_rss_hash_opts methods to allow querying and configuring different Rx flow hash configurations. Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

vmxnet3: prepare for version 4 changes

2020-05-28T23:26:48+00:00

vmxnet3 is currently at version 3 and this patch initiates the preparation to accommodate changes for version 4. Introduced utility macros for vmxnet3 version 4 comparison and update Copyright information. Signed-off-by: Ronak Doshi Signed-off-by: David S. Miller

vmxnet3: let core reject the unsupported coalescing parameters

2020-03-07T06:45:55+00:00

Set ethtool_ops->supported_coalesce_params to let the core reject unsupported coalescing parameters. This driver correctly rejects all unsupported parameters. As a side effect of these changes the error code for unsupported params changes from EINVAL to EOPNOTSUPP. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller