Messages in this thread | | | Date | Thu, 04 Dec 2014 22:11:44 +0300 | From | Sergei Shtylyov <> | Subject | Re: [PATCHv3 net] i40e: Implement ndo_gso_check() |
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Hello.
On 12/04/2014 09:39 PM, Joe Stringer wrote:
> ndo_gso_check() was recently introduced to allow NICs to report the > offloading support that they have on a per-skb basis. Add an > implementation for this driver which checks for IPIP, GRE, UDP tunnels.
> Signed-off-by: Joe Stringer <joestringer@nicira.com> > --- > v3: Drop IPIP and GRE (no driver support even though hw supports it). > Check for UDP outer protocol for UDP tunnels. > v2: Expand to include IP in IP and IPv4/IPv6 inside GRE/UDP tunnels. > Add MAX_INNER_LENGTH (as 80). > --- > drivers/net/ethernet/intel/i40e/i40e_main.c | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+)
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c > index c3a7f4a..0d6493a 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_main.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c > @@ -7447,6 +7447,31 @@ static int i40e_ndo_fdb_dump(struct sk_buff *skb, > > #endif /* USE_DEFAULT_FDB_DEL_DUMP */ > #endif /* HAVE_FDB_OPS */
Need empty line here, I think.
> +static bool i40e_gso_check(struct sk_buff *skb, struct net_device *dev) > +{ > + if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL) { > + unsigned char *ihdr; > + > + if (skb->protocol != IPPROTO_UDP || > + skb->inner_protocol_type != ENCAP_TYPE_ETHER) > + return false; > + > + if (skb->inner_protocol == htons(ETH_P_TEB)) > + ihdr = skb_inner_mac_header(skb); > + else if (skb->inner_protocol == htons(ETH_P_IP) || > + skb->inner_protocol == htons(ETH_P_IPV6)) > + ihdr = skb_inner_network_header(skb); > + else > + return false;
The above is asking to be a *switch* instead, no?
> + > +#define MAX_TUNNEL_HDR_LEN 80
I'd #define this just above the function, if not at the start of the file...
[...]
WBR, Sergei
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