Hi,
When testing VPP, I ended up running most of the tests on a testbed with
Solarflare X2522. DPDK has support for them, as documented here
https://doc.dpdk.org/guides/nics/sfc_efx.html
The vpp sources disable the build of the dpdk sfc driver.
And didn't recognize the device id.
Below is a patch to enable the build and make vpp recognize it.
With that, VPP can run with the NIC. I do not have insights into if it might be
running suboptimal or similar, but I can see that it seems to function.
I tried it via the ld preload library, and with that, vpp gives lower latency
than the kernel, but higher than solarflares own OpenOnload kernel bypass.
Any objections to enable net/sfc?
```
diff --git a/build/external/packages/dpdk.mk b/build/external/packages/dpdk.mk
index 2f0f8ea27..26e967dab 100644
--- a/build/external/packages/dpdk.mk
+++ b/build/external/packages/dpdk.mk
@@ -84,7 +84,6 @@ DPDK_DRIVERS_DISABLED := baseband/\*, \
net/liquidio, \
net/pcap, \
net/pfe, \
- net/sfc, \
net/softnic, \
net/thunderx, \
raw/ifpga, \
diff --git a/src/plugins/dpdk/device/driver.c b/src/plugins/dpdk/device/driver.c
index bb7301aa9..b0958b6ff 100644
--- a/src/plugins/dpdk/device/driver.c
+++ b/src/plugins/dpdk/device/driver.c
@@ -134,6 +134,9 @@ static dpdk_driver_t dpdk_drivers[] = {
{
.drivers = DPDK_DRIVERS ({ "net_gve", "Google vNIC" }),
.interface_name_prefix = "VirtualFunctionEthernet",
+ },
+ {
+ .drivers = DPDK_DRIVERS ({ "net_sfc_efx", "Solarflare X2 Family" }),
}
};
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index d96622573..951b310b3 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -828,6 +828,9 @@ dpdk_bind_devices_to_uio (dpdk_config_main_t * conf)
/* Google vNIC */
else if (d->vendor_id == 0x1ae0 && d->device_id == 0x0042)
;
+ /* Solarflare */
+ else if (d->vendor_id == 0x1924)
+ ;
else
{
dpdk_log_warn ("Unsupported PCI device 0x%04x:0x%04x found "
```
Thanks,
Jakob
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