Found the RSS support, only if the hardware is ">= e1000_82571" from the if_em.c.
if (hw->mac.type >= em_mac_min) // #define em_mac_min e1000_82571 > ... > scctx->isc_txrx = &em_txrx; > ... > > Best Regards, Cheng Cui On Sun, May 7, 2023 at 7:28 PM Cheng Cui <c...@freebsd.org> wrote: > Hi Yuri, > > Thanks for the update. I am using an Emulab testbed node under the same > type of hardware. Below are the new outputs. > It is supposed to have multiple tx/rx queues under msix. Why are there > only rxq0/txq0? Is it because the CPU has only one core? How can I check if > RSS is supported? > > root@s1:~ # sysctl -d dev.em.0.iflib.disable_msix > dev.em.0.iflib.disable_msix: disable MSI-X (default 0) > root@s1:~ # sysctl dev.em.0.iflib.disable_msix > dev.em.0.iflib.disable_msix: 0 > root@s1:~ # sysctl dev.em.0.iflib > dev.em.0.iflib.rxq0.rxq_fl0.buf_size: 2048 > dev.em.0.iflib.rxq0.rxq_fl0.credits: 1023 > dev.em.0.iflib.rxq0.rxq_fl0.cidx: 959 > dev.em.0.iflib.rxq0.rxq_fl0.pidx: 958 > dev.em.0.iflib.rxq0.cpu: 1 > dev.em.0.iflib.txq0.r_abdications: 0 > dev.em.0.iflib.txq0.r_restarts: 0 > dev.em.0.iflib.txq0.r_stalls: 0 > dev.em.0.iflib.txq0.r_starts: 110443 > dev.em.0.iflib.txq0.r_drops: 0 > dev.em.0.iflib.txq0.r_enqueues: 110444 > dev.em.0.iflib.txq0.ring_state: pidx_head: 1903 pidx_tail: 1903 cidx: 1903 > state: IDLE > dev.em.0.iflib.txq0.txq_cleaned: 115208 > dev.em.0.iflib.txq0.txq_processed: 115251 > dev.em.0.iflib.txq0.txq_in_use: 42 > dev.em.0.iflib.txq0.txq_cidx_processed: 565 > dev.em.0.iflib.txq0.txq_cidx: 525 > dev.em.0.iflib.txq0.txq_pidx: 568 > dev.em.0.iflib.txq0.no_tx_dma_setup: 0 > dev.em.0.iflib.txq0.txd_encap_efbig: 0 > dev.em.0.iflib.txq0.tx_map_failed: 0 > dev.em.0.iflib.txq0.no_desc_avail: 0 > dev.em.0.iflib.txq0.mbuf_defrag_failed: 0 > dev.em.0.iflib.txq0.m_pullups: 0 > dev.em.0.iflib.txq0.mbuf_defrag: 0 > dev.em.0.iflib.txq0.cpu: 0 > dev.em.0.iflib.override_nrxds: 0 > dev.em.0.iflib.override_ntxds: 0 > dev.em.0.iflib.use_logical_cores: 0 > dev.em.0.iflib.separate_txrx: 0 > dev.em.0.iflib.core_offset: 0 > dev.em.0.iflib.tx_abdicate: 0 > dev.em.0.iflib.rx_budget: 0 > dev.em.0.iflib.disable_msix: 0 > dev.em.0.iflib.override_qs_enable: 0 > dev.em.0.iflib.override_nrxqs: 0 > dev.em.0.iflib.override_ntxqs: 0 > dev.em.0.iflib.driver_version: 7.7.8-fbsd > root@s1:~ # > > > Best Regards, > Cheng Cui > > > On Sun, May 7, 2023 at 4:18 PM Yuri <y...@aetern.org> wrote: > >> Cheng Cui wrote: >> > Hello, >> > >> > I am using this em(4) driver for some tests. According to the man page >> > below, there should be a "hw.em.msix" sysctl to enable/disable MSI-X >> > style interrupts. But why is it missing in my system below? >> > https://man.freebsd.org/cgi/man.cgi?em(4) >> > <https://man.freebsd.org/cgi/man.cgi?em(4)> >> > >> > root@s1:~ # dmesg | egrep "8254" >> > Timecounter "i8254" frequency 1193182 Hz quality 0 >> > Event timer "i8254" frequency 1193182 Hz quality 100 >> > em0: <Intel(R) Legacy PRO/1000 MT 82541GI> port 0xdcc0-0xdcff mem >> > 0xdfae0000-0xdfafffff irq 64 at device 7.0 on pci6 >> > em1: <Intel(R) Legacy PRO/1000 MT 82541GI> port 0xccc0-0xccff mem >> > 0xdf8e0000-0xdf8fffff irq 65 at device 8.0 on pci7 >> > em2: <Intel(R) Legacy PRO/1000 MT 82546EB (Copper)> port 0xbcc0-0xbcff >> > mem 0xdf5e0000-0xdf5fffff irq 106 at device 4.0 on pci9 >> > em3: <Intel(R) Legacy PRO/1000 MT 82546EB (Copper)> port 0xbc80-0xbcbf >> > mem 0xdf5c0000-0xdf5dffff irq 107 at device 4.1 on pci9 >> > em4: <Intel(R) Legacy PRO/1000 MT 82546EB (Copper)> port 0xacc0-0xacff >> > mem 0xdf3e0000-0xdf3fffff irq 101 at device 3.0 on pci10 >> > em5: <Intel(R) Legacy PRO/1000 MT 82546EB (Copper)> port 0xac80-0xacbf >> > mem 0xdf3c0000-0xdf3dffff irq 102 at device 3.1 on pci10 >> > >> > root@s1:~ # ifconfig em5 >> > em5: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu >> 1500 >> > >> options=481009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,VLAN_HWFILTER,NOMAP> >> > ether 00:04:23:b7:1e:1d >> > inet 10.1.1.2 netmask 0xffffff00 broadcast 10.1.1.255 >> > media: Ethernet 1000baseT <full-duplex> >> > status: active >> > nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >> > >> > root@s1:~ # sysctl hw.em >> > hw.em.max_interrupt_rate: 8000 >> > hw.em.eee_setting: 1 >> > hw.em.rx_process_limit: 100 >> > hw.em.sbp: 0 >> > hw.em.smart_pwr_down: 0 >> > hw.em.rx_abs_int_delay: 66 >> > hw.em.tx_abs_int_delay: 66 >> > hw.em.rx_int_delay: 0 >> > hw.em.tx_int_delay: 66 >> > hw.em.disable_crc_stripping: 0 >> > root@s1:~ # >> >> As if_em was converted to iflib, I guess the related sysctl would now be >> dev.em.0.iflib.disable_msix (I could be wrong, don't have h/w to check). >> >
