Re: Chelsio NIC with RSS - Traffic distribution to different Queues

Again me, I tried to build the chelsio driver (if_cxgbe) on my machine.

root@fw-94:/usr/src/sys/modules/cxgbe # make ; make install -> no errors so far and I see the new kernel module in /boot/modules:

root@fw-94:/usr/src/sys/modules/cxgbe # ls -alh /boot/modules/
total 4584
drwxr-xr-x   2 root  wheel    16B Jul  3 16:37 .
drwxr-xr-x  15 root  wheel    68B Jul  3 16:37 ..
-r-xr-xr-x   1 root  wheel    46K Jul  3 16:37 ccr.ko
-r-xr-xr-x   1 root  wheel    47K Jul  3 16:37 cxgbei.ko
-r-xr-xr-x   1 root  wheel    11K Jul  3 16:37 if_cc.ko
-r-xr-xr-x   1 root  wheel    11K Jul  3 16:37 if_ccv.ko
-r-xr-xr-x   1 root  wheel   746K Jul  3 16:37 if_cxgbe.ko
-r-xr-xr-x   1 root  wheel    41K Jul  3 16:37 if_cxgbev.ko
-r-xr-xr-x   1 root  wheel    11K Jul  3 16:37 if_cxl.ko
-r-xr-xr-x   1 root  wheel    11K Jul  3 16:37 if_cxlv.ko
-r-xr-xr-x   1 root  wheel   154K Jul  3 16:37 iw_cxgbe.ko
-rw-r--r--   1 root  wheel   1.3K Jul  3 16:37 linker.hints
-r-xr-xr-x   1 root  wheel   131K Jul  3 16:37 t4_tom.ko
-r-xr-xr-x   1 root  wheel   596K Jul  3 16:37 t4fw_cfg.ko
-r-xr-xr-x   1 root  wheel   725K Jul  3 16:37 t5fw_cfg.ko
-r-xr-xr-x   1 root  wheel   777K Jul  3 16:37 t6fw_cfg.ko

However still the same result, the new sysctl values are not visible. Any help would be appreciated.

Btw.: reboot has been done.

Cheers Josef

From: Zahner Josef, GSA-REP-LI <Josef.Zahner1@swisscom.com>
Date: Monday, 3 July 2023 at 15:45
To: Navdeep Parhar <np@freebsd.org>
Cc: freebsd-net@freebsd.org <freebsd-net@freebsd.org>
Subject: Re: Chelsio NIC with RSS - Traffic distribution to different Queues
Hi Navdeep

Nevermind, I found the following command to apply your patch diff:
root@fw-94:/sys/dev/cxgbe # patch < /root/chelsio_rss_patch.diff

There was an inconsistency with “adapter.h”, your change on line 219 was in my case a few lines further below, so I decided to manually edit those two changes in the file.

However I tried to load the new sysctl values like “hw.cxgbe.rsrv_norssq» in loader.conf, how can I verify that it works as it should? It seems that they don’t work as the don’t show up when I try to print out the new sysctl values. You mentioned that I’ve to patch the kernel, do you mean execute the patch diff? Or is there anything else I’ve to do except to execute your patch diff? What about my driver, do I need to change anything there?

Thank you, cheers
Josef