netdev - Re: [PATCH v3 net-next 02/11] net: define gso types for IPx over IPv4 and IPv6

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Date:	Fri, 6 May 2016 15:55:28 -0700
From:	Tom Herbert <tom@...bertland.com>
To:	Alexander Duyck <alexander.duyck@...il.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Linux Kernel Network Developers <netdev@...r.kernel.org>,
	Kernel Team <kernel-team@...com>
Subject: Re: [PATCH v3 net-next 02/11] net: define gso types for IPx over IPv4
 and IPv6

On Fri, May 6, 2016 at 3:48 PM, Alexander Duyck
<alexander.duyck@...il.com> wrote:
> On 05/06/2016 03:11 PM, Tom Herbert wrote:
>>
>> This patch defines two new GDO definitions SKB_GSO_IPXIP4 and
>> SKB_GSO_IPXIP6 along with corresponding NETIF_F_GSO_IPXIP4 and
>> NETIF_F_GSO_IPXIP6. These are used to described IP in IP
>> tunnel and what the outer protocol is. The inner protocol
>> can be deduced from other GSO types (e.g. SKB_GSO_TCPV4 and
>> SKB_GSO_TCPV6). The GSO types of SKB_GSO_IPIP and SKB_GSO_SIT
>> are removed (these are both instances of SKB_GSO_IPXIP4).
>> SKB_GSO_IPXIP6 will be used when support for GSO with IP
>> encapsulation over IPv6 is added.
>>
>> Signed-off-by: Tom Herbert <tom@...bertland.com>
>> ---
>>   drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c  |  5 ++---
>>   drivers/net/ethernet/broadcom/bnxt/bnxt.c         |  4 ++--
>>   drivers/net/ethernet/intel/i40e/i40e_main.c       |  3 +--
>>   drivers/net/ethernet/intel/i40e/i40e_txrx.c       |  3 +--
>>   drivers/net/ethernet/intel/i40evf/i40e_txrx.c     |  3 +--
>>   drivers/net/ethernet/intel/i40evf/i40evf_main.c   |  3 +--
>>   drivers/net/ethernet/intel/ixgbe/ixgbe_main.c     |  3 +--
>>   drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  3 +--
>>   include/linux/netdev_features.h                   | 12 ++++++------
>>   include/linux/netdevice.h                         |  4 ++--
>>   include/linux/skbuff.h                            |  4 ++--
>>   net/core/ethtool.c                                |  4 ++--
>>   net/ipv4/af_inet.c                                |  2 +-
>>   net/ipv4/ipip.c                                   |  2 +-
>>   net/ipv6/ip6_offload.c                            |  4 ++--
>>   net/ipv6/sit.c                                    |  4 ++--
>>   net/netfilter/ipvs/ip_vs_xmit.c                   | 17 +++++++----------
>>   17 files changed, 35 insertions(+), 45 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> index d465bd7..0a5b770 100644
>> --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
>> @@ -13259,12 +13259,11 @@ static int bnx2x_init_dev(struct bnx2x *bp,
>> struct pci_dev *pdev,
>>                 NETIF_F_RXHASH | NETIF_F_HW_VLAN_CTAG_TX;
>>         if (!chip_is_e1x) {
>>                 dev->hw_features |= NETIF_F_GSO_GRE |
>> NETIF_F_GSO_UDP_TUNNEL |
>> -                                   NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT;
>> +                                   NETIF_F_GSO_IPXIP4;
>>                 dev->hw_enc_features =
>>                         NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
>>                         NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 |
>> -                       NETIF_F_GSO_IPIP |
>> -                       NETIF_F_GSO_SIT |
>> +                       NETIF_F_GSO_IPXIP4 |
>>                         NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL;
>>         }
>>
>> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
>> b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
>> index fd85b6d..e449228 100644
>> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
>> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
>> @@ -6218,7 +6218,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const
>> struct pci_device_id *ent)
>>         dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
>> NETIF_F_SG |
>>                            NETIF_F_TSO | NETIF_F_TSO6 |
>>                            NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |
>> -                          NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT |
>> +                          NETIF_F_GSO_IPXIP4 |
>>                            NETIF_F_GSO_UDP_TUNNEL_CSUM |
>> NETIF_F_GSO_GRE_CSUM |
>>                            NETIF_F_GSO_PARTIAL | NETIF_F_RXHASH |
>>                            NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_GRO;
>> @@ -6228,7 +6228,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const
>> struct pci_device_id *ent)
>>                         NETIF_F_TSO | NETIF_F_TSO6 |
>>                         NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |
>>                         NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM
>> |
>> -                       NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT |
>> +                       NETIF_F_GSO_IPXIP4;
>>                         NETIF_F_GSO_PARTIAL;
>>         dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM |
>>                                     NETIF_F_GSO_GRE_CSUM;
>
>
> You should try building the bnxt driver at least if you are making changes
> to it.  This bit is broken.  It should be an '|' and not a ';' here.
>
> The other bits seem to be correct.  I'll try testing this over the next few
> hours to see if I can find any other issues.

Huh, that's odd. I'm pretty sure I built drivers/net with allyesconfig
with this.

Thanks for catching it.

>
> - Alex