Date: Sun, 28 Nov 2021 19:30:46 +0100 From: Vincenzo Maffione <vmaffione@freebsd.org> To: =?UTF-8?B?w5Z6a2FuIEtJUklL?= <ozkan.kirik@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org>, kbowling@freebsd.org Subject: Re: e1000 & igb if_vlan netmap header stripping issue after e1000-igb driver updates. Message-ID: <CA%2B_eA9hSX8ePASui5wYDxrf3GYsJ_5Tukcd8BLLzSi12AvmKBA@mail.gmail.com> In-Reply-To: <CAAcX-AHDkT676Rnbth7FdNe%2BBXOhvrVjqO7aDXAhT5nC9hUMkw@mail.gmail.com> References: <CAAcX-AHDkT676Rnbth7FdNe%2BBXOhvrVjqO7aDXAhT5nC9hUMkw@mail.gmail.com>
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--000000000000680ae405d1dd8612 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260068 On Sat, Nov 20, 2021, 3:19 PM =C3=96zkan KIRIK <ozkan.kirik@gmail.com> wrot= e: > Hello, > > I'm using stable/12 (aba2dc46dfa5, Oct 24 2021). I'm hitting some > problems with if_vlan + parent interface netmap. It was working with > before driver update. Maybe something missing for netmap > implementation. > > The way to reproduce: > [HostA] <----> [HostB] > > HostA > - ifconfig em1.110 create 10.10.10.2/24 up > - ping 10.10.10.1 > - tcpdump -eni em1 > 17:05:11.393411 00:50:56:26:69:ea > 00:0c:29:84:5d:88, ethertype > 802.1Q (0x8100), length 102: vlan 110, p 0, ethertype IPv4, 10.10.10.1 > > 10.10.10.2: ICMP echo reply, id 32844, seq 53, length 64 > > HostB > - ifconfig em1.110 create 10.10.10.1/24 up > - ifconfig em1 promisc -tso -lro -rxcsum -txcsum -tso6 -rxcsum -txcsum > -tso6 -rxcsum6 -txcsum6 -vlanhwtag -vlanhwcsum -vlanhwtso > - ./bridge -i em1 -i em1^ & > # tcpdump -eni em1 > 17:05:11.391215 00:0c:29:84:5d:88 > 00:50:56:26:69:ea, ethertype IPv4 > (0x0800), length 98: 10.10.10.2 > 10.10.10.1: ICMP echo request, id > 32844, seq 53, length 64 > > Pinging from HostA to HostB through if_vlan. When netmap bridge is > closed, everything is okey, we can see the original packet on tcpdump. > But when netmap bridge is started, packet's vlan header was lost as > you can see above. The netmap bridge app is the original > tools/tools/netmap/bridge.c application. > HostA and HostB connected back to back directly with a patch cable. > There is no switch between them. > > I tried this test on real hardware em, igb and vmware e1000 (em) nics. > Problem is easy to reproduce. > But there is no such problem on ix and ixl cards. > > Is it possible to check and fix? > Best Regards, > =C3=96zkan KIRIK > --000000000000680ae405d1dd8612--
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