Messages in this thread | | | Date | Thu, 29 Aug 2019 15:08:51 -0700 (PDT) | Subject | Re: [PATCH v3 1/2] net: core: Notify on changes to dev->promiscuity. | From | David Miller <> |
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From: Ido Schimmel <idosch@idosch.org> Date: Thu, 29 Aug 2019 20:57:59 +0300
> On a software switch, when you run tcpdump without '-p', do you incur > major packet loss? No. Will this happen when you punt several Tbps to > your CPU on the hardware switch? Yes. > > Extending the definition of promiscuous mode to mean punt all traffic to > the CPU is wrong, IMO. You will not be able to capture all the packets
This is so illogical, it is mind boggling.
How different is this to using tcpdump/wireshark on a 100GB or 1TB network interface?
There is no difference.
Please stop portraying switches as special in this regard, they are not.
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