diff options
| author | Íñigo Huguet <ihuguet@redhat.com> | 2023-01-25 17:35:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-09 13:28:05 +0300 |
| commit | ddaf96f6953b0a04a2cf8df4790aa76b50dabd31 (patch) | |
| tree | b3579f59f7029dc1f0bc5d8979b17b1ad57d50aa | |
| parent | a838f8a69b1ff1351673494f6b7b5786c6ecb1c2 (diff) | |
| download | linux-ddaf96f6953b0a04a2cf8df4790aa76b50dabd31.tar.xz | |
sfc: correctly advertise tunneled IPv6 segmentation
[ Upstream commit ffffd2454a7a1bc9f7242b12c4cc0b05c12692b4 ]
Recent sfc NICs are TSO capable for some tunnel protocols. However, it
was not working properly because the feature was not advertised in
hw_enc_features, but in hw_features only.
Setting up a GENEVE tunnel and using iperf3 to send IPv4 and IPv6 traffic
to the tunnel show, with tcpdump, that the IPv4 packets still had ~64k
size but the IPv6 ones had only ~1500 bytes (they had been segmented by
software, not offloaded). With this patch segmentation is offloaded as
expected and the traffic is correctly received at the other end.
Fixes: 24b2c3751aa3 ("sfc: advertise encapsulated offloads on EF10")
Reported-by: Tianhao Zhao <tizhao@redhat.com>
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Acked-by: Martin Habets <habetsm.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20230125143513.25841-1-ihuguet@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 0556542d7a6b..3a86f1213a05 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1003,8 +1003,11 @@ static int efx_pci_probe_post_io(struct efx_nic *efx) /* Determine netdevice features */ net_dev->features |= (efx->type->offload_features | NETIF_F_SG | NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_RXALL); - if (efx->type->offload_features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) + if (efx->type->offload_features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) { net_dev->features |= NETIF_F_TSO6; + if (efx_has_cap(efx, TX_TSO_V2_ENCAP)) + net_dev->hw_enc_features |= NETIF_F_TSO6; + } /* Check whether device supports TSO */ if (!efx->type->tso_versions || !efx->type->tso_versions(efx)) net_dev->features &= ~NETIF_F_ALL_TSO; |