| Message ID | 20250121085525.176019-1-liuhangbin@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [net] Bonding: Fix support for gso_partial_features | expand |
On Tue, Jan 21, 2025 at 08:55:25AM +0000, Hangbin Liu wrote: > The fixed commit adds NETIF_F_GSO_ESP bit for bonding gso_partial_features. > However, if we don't set the dev NETIF_F_GSO_PARTIAL bit, the later > netdev_change_features() -> netdev_fix_features() will remove the > NETIF_F_GSO_ESP bit from the dev features. This causes ethtool to show > that the bond does not support tx-esp-segmentation. For example > > # ethtool -k bond0 | grep esp > tx-esp-segmentation: off [requested on] > esp-hw-offload: on > esp-tx-csum-hw-offload: on > > Add the NETIF_F_GSO_PARTIAL bit to bond dev features when set > gso_partial_features to fix this issue. > > Fixes: 4861333b4217 ("bonding: add ESP offload features when slaves support") > Reported-by: Liang Li <liali@redhat.com> > Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> > --- > drivers/net/bonding/bond_main.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c > index 7b78c2bada81..e1c054416d5e 100644 > --- a/drivers/net/bonding/bond_main.c > +++ b/drivers/net/bonding/bond_main.c > @@ -1598,10 +1598,12 @@ static void bond_compute_features(struct bonding *bond) > } > bond_dev->hard_header_len = max_hard_header_len; > > - if (gso_partial_features & NETIF_F_GSO_ESP) > + if (gso_partial_features & NETIF_F_GSO_ESP) { > bond_dev->gso_partial_features |= NETIF_F_GSO_ESP; > - else > + bond_dev->features |= NETIF_F_GSO_PARTIAL; > + } else { > bond_dev->gso_partial_features &= ~NETIF_F_GSO_ESP; > + } Hmm, looks we need to remove NETIF_F_GSO_PARTIAL when remove the gso_partial_features. BTW, I saw some drivers set NETIF_F_GSO_PARTIAL on dev->features. Some other drivers set NETIF_F_GSO_PARTIAL on dev->hw_enc_features. I haven't see a doc about where we should set. Please tell me if you have any comments. Thanks Hangbin
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 7b78c2bada81..e1c054416d5e 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1598,10 +1598,12 @@ static void bond_compute_features(struct bonding *bond) } bond_dev->hard_header_len = max_hard_header_len; - if (gso_partial_features & NETIF_F_GSO_ESP) + if (gso_partial_features & NETIF_F_GSO_ESP) { bond_dev->gso_partial_features |= NETIF_F_GSO_ESP; - else + bond_dev->features |= NETIF_F_GSO_PARTIAL; + } else { bond_dev->gso_partial_features &= ~NETIF_F_GSO_ESP; + } done: bond_dev->vlan_features = vlan_features;
The fixed commit adds NETIF_F_GSO_ESP bit for bonding gso_partial_features. However, if we don't set the dev NETIF_F_GSO_PARTIAL bit, the later netdev_change_features() -> netdev_fix_features() will remove the NETIF_F_GSO_ESP bit from the dev features. This causes ethtool to show that the bond does not support tx-esp-segmentation. For example # ethtool -k bond0 | grep esp tx-esp-segmentation: off [requested on] esp-hw-offload: on esp-tx-csum-hw-offload: on Add the NETIF_F_GSO_PARTIAL bit to bond dev features when set gso_partial_features to fix this issue. Fixes: 4861333b4217 ("bonding: add ESP offload features when slaves support") Reported-by: Liang Li <liali@redhat.com> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> --- drivers/net/bonding/bond_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)