* [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
@ 2015-01-23 4:33 roopa
2015-01-23 9:44 ` Jiri Pirko
0 siblings, 1 reply; 6+ messages in thread
From: roopa @ 2015-01-23 4:33 UTC (permalink / raw)
To: jiri, sfeldma, jhs, bcrl, tgraf, john.fastabend, stephen,
vyasevic, ronen.arad
Cc: netdev, davem, shm, gospo, Roopa Prabhu
From: Roopa Prabhu <roopa@cumulusnetworks.com>
This is a high level feature flag for all switch asic offloads
switch drivers set this flag on switch ports. Logical devices like
bridge, bonds, vxlans can inherit this flag from their slaves/ports.
The patch also adds the flag to NETIF_F_ONE_FOR_ALL, so that it gets
propagated to the upperdevices (bridges and bonds).
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
---
include/linux/netdev_features.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 8e30685..784a461 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -66,6 +66,7 @@ enum {
NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
NETIF_F_BUSY_POLL_BIT, /* Busy poll */
+ NETIF_F_HW_NETFUNC_OFFLOAD_BIT, /* HW switch offload */
/*
* Add your fresh new feature above and remember to update
@@ -124,6 +125,7 @@ enum {
#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
#define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
#define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL)
+#define NETIF_F_HW_NETFUNC_OFFLOAD __NETIF_F(HW_NETFUNC_OFFLOAD)
/* Features valid for ethtool to change */
/* = all defined minus driver/device-class-related */
@@ -159,7 +161,9 @@ enum {
*/
#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
NETIF_F_SG | NETIF_F_HIGHDMA | \
- NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
+ NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED | \
+ NETIF_F_HW_NETFUNC_OFFLOAD)
+
/*
* If one device doesn't support one of these features, then disable it
* for all in netdev_increment_features.
--
1.7.10.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
2015-01-23 4:33 [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads roopa
@ 2015-01-23 9:44 ` Jiri Pirko
2015-01-23 15:48 ` roopa
0 siblings, 1 reply; 6+ messages in thread
From: Jiri Pirko @ 2015-01-23 9:44 UTC (permalink / raw)
To: roopa
Cc: sfeldma, jhs, bcrl, tgraf, john.fastabend, stephen, vyasevic,
ronen.arad, netdev, davem, shm, gospo
Fri, Jan 23, 2015 at 05:33:22AM CET, roopa@cumulusnetworks.com wrote:
>From: Roopa Prabhu <roopa@cumulusnetworks.com>
>
>This is a high level feature flag for all switch asic offloads
>
>switch drivers set this flag on switch ports. Logical devices like
>bridge, bonds, vxlans can inherit this flag from their slaves/ports.
>
>The patch also adds the flag to NETIF_F_ONE_FOR_ALL, so that it gets
>propagated to the upperdevices (bridges and bonds).
>
>Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
>---
> include/linux/netdev_features.h | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
>diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
>index 8e30685..784a461 100644
>--- a/include/linux/netdev_features.h
>+++ b/include/linux/netdev_features.h
>@@ -66,6 +66,7 @@ enum {
> NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
> NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
> NETIF_F_BUSY_POLL_BIT, /* Busy poll */
>+ NETIF_F_HW_NETFUNC_OFFLOAD_BIT, /* HW switch offload */
How about rather "HW_DATAPATH_OFFLOAD"? Feels more accurate. By the
name, I still cannot understand what NETFUNC should mean.
>
> /*
> * Add your fresh new feature above and remember to update
>@@ -124,6 +125,7 @@ enum {
> #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
> #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
> #define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL)
>+#define NETIF_F_HW_NETFUNC_OFFLOAD __NETIF_F(HW_NETFUNC_OFFLOAD)
>
> /* Features valid for ethtool to change */
> /* = all defined minus driver/device-class-related */
>@@ -159,7 +161,9 @@ enum {
> */
> #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
> NETIF_F_SG | NETIF_F_HIGHDMA | \
>- NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
>+ NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED | \
>+ NETIF_F_HW_NETFUNC_OFFLOAD)
>+
> /*
> * If one device doesn't support one of these features, then disable it
> * for all in netdev_increment_features.
>--
>1.7.10.4
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
2015-01-23 9:44 ` Jiri Pirko
@ 2015-01-23 15:48 ` roopa
2015-01-23 17:56 ` Thomas Graf
0 siblings, 1 reply; 6+ messages in thread
From: roopa @ 2015-01-23 15:48 UTC (permalink / raw)
To: Jiri Pirko
Cc: sfeldma, jhs, bcrl, tgraf, john.fastabend, stephen, vyasevic,
ronen.arad, netdev, davem, shm, gospo
On 1/23/15, 1:44 AM, Jiri Pirko wrote:
> Fri, Jan 23, 2015 at 05:33:22AM CET, roopa@cumulusnetworks.com wrote:
>> From: Roopa Prabhu <roopa@cumulusnetworks.com>
>>
>> This is a high level feature flag for all switch asic offloads
>>
>> switch drivers set this flag on switch ports. Logical devices like
>> bridge, bonds, vxlans can inherit this flag from their slaves/ports.
>>
>> The patch also adds the flag to NETIF_F_ONE_FOR_ALL, so that it gets
>> propagated to the upperdevices (bridges and bonds).
>>
>> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
>> ---
>> include/linux/netdev_features.h | 6 +++++-
>> 1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
>> index 8e30685..784a461 100644
>> --- a/include/linux/netdev_features.h
>> +++ b/include/linux/netdev_features.h
>> @@ -66,6 +66,7 @@ enum {
>> NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
>> NETIF_F_HW_L2FW_DOFFLOAD_BIT, /* Allow L2 Forwarding in Hardware */
>> NETIF_F_BUSY_POLL_BIT, /* Busy poll */
>> + NETIF_F_HW_NETFUNC_OFFLOAD_BIT, /* HW switch offload */
> How about rather "HW_DATAPATH_OFFLOAD"? Feels more accurate. By the
> name, I still cannot understand what NETFUNC should mean.
It was supposed to mean 'network function offload'. sure, will consider
HW_DATAPATH_OFFLOAD
or if anybody has other suggestions.
thanks.
>
>
>> /*
>> * Add your fresh new feature above and remember to update
>> @@ -124,6 +125,7 @@ enum {
>> #define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
>> #define NETIF_F_HW_L2FW_DOFFLOAD __NETIF_F(HW_L2FW_DOFFLOAD)
>> #define NETIF_F_BUSY_POLL __NETIF_F(BUSY_POLL)
>> +#define NETIF_F_HW_NETFUNC_OFFLOAD __NETIF_F(HW_NETFUNC_OFFLOAD)
>>
>> /* Features valid for ethtool to change */
>> /* = all defined minus driver/device-class-related */
>> @@ -159,7 +161,9 @@ enum {
>> */
>> #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
>> NETIF_F_SG | NETIF_F_HIGHDMA | \
>> - NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
>> + NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED | \
>> + NETIF_F_HW_NETFUNC_OFFLOAD)
>> +
>> /*
>> * If one device doesn't support one of these features, then disable it
>> * for all in netdev_increment_features.
>> --
>> 1.7.10.4
>>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
2015-01-23 15:48 ` roopa
@ 2015-01-23 17:56 ` Thomas Graf
2015-01-23 19:05 ` Jiri Pirko
0 siblings, 1 reply; 6+ messages in thread
From: Thomas Graf @ 2015-01-23 17:56 UTC (permalink / raw)
To: roopa
Cc: Jiri Pirko, sfeldma, jhs, bcrl, john.fastabend, stephen,
vyasevic, ronen.arad, netdev, davem, shm, gospo
On 01/23/15 at 07:48am, roopa wrote:
> On 1/23/15, 1:44 AM, Jiri Pirko wrote:
> >How about rather "HW_DATAPATH_OFFLOAD"? Feels more accurate. By the
> >name, I still cannot understand what NETFUNC should mean.
>
> It was supposed to mean 'network function offload'. sure, will consider
> HW_DATAPATH_OFFLOAD
> or if anybody has other suggestions.
I'm still fascinated that the description says 'for all switch asic
offloads', 'switch drivers', 'switch ports' but we try very hard to
come up with a different name ;-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
2015-01-23 17:56 ` Thomas Graf
@ 2015-01-23 19:05 ` Jiri Pirko
2015-01-23 23:09 ` roopa
0 siblings, 1 reply; 6+ messages in thread
From: Jiri Pirko @ 2015-01-23 19:05 UTC (permalink / raw)
To: Thomas Graf
Cc: roopa, sfeldma, jhs, bcrl, john.fastabend, stephen, vyasevic,
ronen.arad, netdev, davem, shm, gospo
Fri, Jan 23, 2015 at 06:56:54PM CET, tgraf@suug.ch wrote:
>On 01/23/15 at 07:48am, roopa wrote:
>> On 1/23/15, 1:44 AM, Jiri Pirko wrote:
>> >How about rather "HW_DATAPATH_OFFLOAD"? Feels more accurate. By the
>> >name, I still cannot understand what NETFUNC should mean.
>>
>> It was supposed to mean 'network function offload'. sure, will consider
>> HW_DATAPATH_OFFLOAD
>> or if anybody has other suggestions.
>
>I'm still fascinated that the description says 'for all switch asic
>offloads', 'switch drivers', 'switch ports' but we try very hard to
>come up with a different name ;-)
+1
But we'll see in future. I bet that "switch" will stick.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads
2015-01-23 19:05 ` Jiri Pirko
@ 2015-01-23 23:09 ` roopa
0 siblings, 0 replies; 6+ messages in thread
From: roopa @ 2015-01-23 23:09 UTC (permalink / raw)
To: Jiri Pirko
Cc: Thomas Graf, sfeldma, jhs, bcrl, john.fastabend, stephen,
vyasevic, ronen.arad, netdev, davem, shm, gospo
On 1/23/15, 11:05 AM, Jiri Pirko wrote:
> Fri, Jan 23, 2015 at 06:56:54PM CET, tgraf@suug.ch wrote:
>> On 01/23/15 at 07:48am, roopa wrote:
>>> On 1/23/15, 1:44 AM, Jiri Pirko wrote:
>>>> How about rather "HW_DATAPATH_OFFLOAD"? Feels more accurate. By the
>>>> name, I still cannot understand what NETFUNC should mean.
>>> It was supposed to mean 'network function offload'. sure, will consider
>>> HW_DATAPATH_OFFLOAD
>>> or if anybody has other suggestions.
>> I'm still fascinated that the description says 'for all switch asic
>> offloads', 'switch drivers', 'switch ports' but we try very hard to
>> come up with a different name ;-)
> +1
> But we'll see in future. I bet that "switch" will stick.
because....am sure anything else will get rejected ;).
...The API/patches is currently targeting switch ASIC devices but the
idea behind having the flag
not be called 'switch' was to cover all the devices being discussed
today (previous threads on this indicate that).
Its fair to say that I only care about switch asics today. If that's the
popular vote i am going with that.
renaming it in the next series...
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-01-23 23:09 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2015-01-23 4:33 [PATCH net-next v3 1/5] netdev: introduce new NETIF_F_HW_NETFUNC_OFFLOAD feature flag for switch device offloads roopa
2015-01-23 9:44 ` Jiri Pirko
2015-01-23 15:48 ` roopa
2015-01-23 17:56 ` Thomas Graf
2015-01-23 19:05 ` Jiri Pirko
2015-01-23 23:09 ` roopa
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