* [v10, 0/7] Fix eSDHC host version register bug
From: Yangbo Lu @ 2016-05-05 3:12 UTC (permalink / raw)
To: linux-mmc-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-clk-u79uwXL29TY76Z2rM5mHXA,
linux-i2c-u79uwXL29TY76Z2rM5mHXA,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA,
netdev-u79uwXL29TY76Z2rM5mHXA
Cc: Mark Rutland, ulf.hansson-QSEj5FYQhm4dnm+yROfE0A, Russell King,
Yangbo Lu, Bhupesh Sharma, Santosh Shilimkar, Jochen Friedrich,
leoyang.li-3arQi8VN3Tc, Scott Wood, Rob Herring, Claudiu Manoil,
Kumar Gala, xiaobo.xie-3arQi8VN3Tc, Qiang Zhao
This patchset is used to fix a host version register bug in the T4240-R1.0-R2.0
eSDHC controller. To get the SoC version and revision, it's needed to add the
GUTS driver to access the global utilities registers.
So, the first four patches are to add the GUTS driver.
The following patches except the updating MAINTAINERS patch are to enable
GUTS driver support to get SVR in eSDHC driver and fix host version for T4240.
Yangbo Lu (7):
Documentation: DT: update Freescale DCFG compatible
ARM64: dts: ls2080a: add device configuration node
soc: fsl: add GUTS driver for QorIQ platforms
dt: move guts devicetree doc out of powerpc directory
powerpc/fsl: move mpc85xx.h to include/linux/fsl
MAINTAINERS: add entry for Freescale SoC drivers
mmc: sdhci-of-esdhc: fix host version for T4240-R1.0-R2.0
Documentation/devicetree/bindings/arm/fsl.txt | 6 +-
.../bindings/{powerpc => soc}/fsl/guts.txt | 3 +
MAINTAINERS | 11 +-
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 6 +
arch/powerpc/kernel/cpu_setup_fsl_booke.S | 2 +-
drivers/clk/clk-qoriq.c | 3 +-
drivers/i2c/busses/i2c-mpc.c | 2 +-
drivers/iommu/fsl_pamu.c | 3 +-
drivers/mmc/host/Kconfig | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 23 ++++
drivers/net/ethernet/freescale/gianfar.c | 2 +-
drivers/soc/Kconfig | 2 +-
drivers/soc/fsl/Kconfig | 8 ++
drivers/soc/fsl/Makefile | 1 +
drivers/soc/fsl/guts.c | 119 +++++++++++++++++++
include/linux/fsl/guts.h | 126 +++++++++++++--------
.../asm/mpc85xx.h => include/linux/fsl/svr.h | 4 +-
17 files changed, 262 insertions(+), 60 deletions(-)
rename Documentation/devicetree/bindings/{powerpc => soc}/fsl/guts.txt (91%)
create mode 100644 drivers/soc/fsl/Kconfig
create mode 100644 drivers/soc/fsl/guts.c
rename arch/powerpc/include/asm/mpc85xx.h => include/linux/fsl/svr.h (97%)
--
2.1.0.27.g96db324
^ permalink raw reply
* Re: [PATCH net-next 01/14] gso: Remove arbitrary checks for unsupported GSO
From: Alexander Duyck @ 2016-05-05 2:59 UTC (permalink / raw)
To: Tom Herbert; +Cc: David Miller, Netdev, Kernel Team
In-Reply-To: <1462410164-1953217-2-git-send-email-tom@herbertland.com>
On Wed, May 4, 2016 at 6:02 PM, Tom Herbert <tom@herbertland.com> wrote:
> In several gso_segment functions there are checks of gso_type against
> a seemingly abitrary list of SKB_GSO_* flags. This seems like an
> attempt to identify unsupported GSO types, but since the stack is
> the one that set these GSO types in the first place this seems
> unnecessary to do. If a combination isn't valid in the first
> place that stack should not allow setting it.
You would think that was the case. The problem is I have already seen
one issue with GUE allowing an unsupported combination of GRE_CSUM and
UDP tunnels.
> This is a code simplication especially for add new GSO types.
I'd say you might be better off going through and just putting in
place a few specific restrictions with a WARN_ONCE or something like
that.
> Signed-off-by: Tom Herbert <tom@herbertland.com>
> ---
> net/ipv4/af_inet.c | 18 ------------------
> net/ipv4/gre_offload.c | 14 --------------
> net/ipv4/tcp_offload.c | 19 -------------------
> net/ipv4/udp_offload.c | 10 ----------
> net/ipv6/ip6_offload.c | 18 ------------------
> net/ipv6/udp_offload.c | 13 -------------
> 6 files changed, 92 deletions(-)
>
> diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
> index 2e6e65f..7f08d45 100644
> --- a/net/ipv4/af_inet.c
> +++ b/net/ipv4/af_inet.c
> @@ -1205,24 +1205,6 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
> int ihl;
> int id;
>
> - if (unlikely(skb_shinfo(skb)->gso_type &
> - ~(SKB_GSO_TCPV4 |
> - SKB_GSO_UDP |
> - SKB_GSO_DODGY |
> - SKB_GSO_TCP_ECN |
> - SKB_GSO_GRE |
> - SKB_GSO_GRE_CSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_SIT |
> - SKB_GSO_TCPV6 |
> - SKB_GSO_UDP_TUNNEL |
> - SKB_GSO_UDP_TUNNEL_CSUM |
> - SKB_GSO_TCP_FIXEDID |
> - SKB_GSO_TUNNEL_REMCSUM |
> - SKB_GSO_PARTIAL |
> - 0)))
> - goto out;
> -
This can go. It basically just reads like a feature list for GSO.
> skb_reset_network_header(skb);
> nhoff = skb_network_header(skb) - skb_mac_header(skb);
> if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
> diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
> index e88190a..ecd1e09 100644
> --- a/net/ipv4/gre_offload.c
> +++ b/net/ipv4/gre_offload.c
> @@ -26,20 +26,6 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
> int gre_offset, outer_hlen;
> bool need_csum, ufo;
>
> - if (unlikely(skb_shinfo(skb)->gso_type &
> - ~(SKB_GSO_TCPV4 |
> - SKB_GSO_TCPV6 |
> - SKB_GSO_UDP |
> - SKB_GSO_DODGY |
> - SKB_GSO_TCP_ECN |
> - SKB_GSO_TCP_FIXEDID |
> - SKB_GSO_GRE |
> - SKB_GSO_GRE_CSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_SIT |
> - SKB_GSO_PARTIAL)))
> - goto out;
> -
This is trying to catch that specific case I mentioned where GRE and
UDP are being applied to the same tunnel. We should have a mutual
exclusion on them, but UDP is getting around it by skipping over the
GRE header in its offload. If GRE contains a UDP tunnel we definitely
should throw something like a WARN_ONCE. I'd say just test for the
UDP_TUNNEL and UDP_TUNNEL_CSUM bits though until GRE and UDP_TUNNEL
can find a way to deal with sharing the inner_mac_header.
> if (!skb->encapsulation)
> goto out;
>
> diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
> index 02737b6..5c59649 100644
> --- a/net/ipv4/tcp_offload.c
> +++ b/net/ipv4/tcp_offload.c
> @@ -83,25 +83,6 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
>
> if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
> /* Packet is from an untrusted source, reset gso_segs. */
> - int type = skb_shinfo(skb)->gso_type;
> -
> - if (unlikely(type &
> - ~(SKB_GSO_TCPV4 |
> - SKB_GSO_DODGY |
> - SKB_GSO_TCP_ECN |
> - SKB_GSO_TCP_FIXEDID |
> - SKB_GSO_TCPV6 |
> - SKB_GSO_GRE |
> - SKB_GSO_GRE_CSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_SIT |
> - SKB_GSO_UDP_TUNNEL |
> - SKB_GSO_UDP_TUNNEL_CSUM |
> - SKB_GSO_TUNNEL_REMCSUM |
> - 0) ||
> - !(type & (SKB_GSO_TCPV4 |
> - SKB_GSO_TCPV6))))
> - goto out;
This could probably be reduced to a check for SKB_GSO_UDP.
> skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
>
> diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
> index 097060de..b556ef6 100644
> --- a/net/ipv4/udp_offload.c
> +++ b/net/ipv4/udp_offload.c
> @@ -209,16 +209,6 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
>
> if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
> /* Packet is from an untrusted source, reset gso_segs. */
> - int type = skb_shinfo(skb)->gso_type;
> -
> - if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
> - SKB_GSO_UDP_TUNNEL |
> - SKB_GSO_UDP_TUNNEL_CSUM |
> - SKB_GSO_TUNNEL_REMCSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_GRE | SKB_GSO_GRE_CSUM) ||
> - !(type & (SKB_GSO_UDP))))
> - goto out;
This could be reduced to a check for the GSO types specific to TCP.
> skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
>
> diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
> index f5eb184..9ad743b 100644
> --- a/net/ipv6/ip6_offload.c
> +++ b/net/ipv6/ip6_offload.c
> @@ -69,24 +69,6 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
> bool encap, udpfrag;
> int nhoff;
>
> - if (unlikely(skb_shinfo(skb)->gso_type &
> - ~(SKB_GSO_TCPV4 |
> - SKB_GSO_UDP |
> - SKB_GSO_DODGY |
> - SKB_GSO_TCP_ECN |
> - SKB_GSO_TCP_FIXEDID |
> - SKB_GSO_TCPV6 |
> - SKB_GSO_GRE |
> - SKB_GSO_GRE_CSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_SIT |
> - SKB_GSO_UDP_TUNNEL |
> - SKB_GSO_UDP_TUNNEL_CSUM |
> - SKB_GSO_TUNNEL_REMCSUM |
> - SKB_GSO_PARTIAL |
> - 0)))
> - goto out;
> -
You could drop this one.
> skb_reset_network_header(skb);
> nhoff = skb_network_header(skb) - skb_mac_header(skb);
> if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
> diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
> index 5429f6b..ac858c4 100644
> --- a/net/ipv6/udp_offload.c
> +++ b/net/ipv6/udp_offload.c
> @@ -36,19 +36,6 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
>
> if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
> /* Packet is from an untrusted source, reset gso_segs. */
> - int type = skb_shinfo(skb)->gso_type;
> -
> - if (unlikely(type & ~(SKB_GSO_UDP |
> - SKB_GSO_DODGY |
> - SKB_GSO_UDP_TUNNEL |
> - SKB_GSO_UDP_TUNNEL_CSUM |
> - SKB_GSO_TUNNEL_REMCSUM |
> - SKB_GSO_GRE |
> - SKB_GSO_GRE_CSUM |
> - SKB_GSO_IPIP |
> - SKB_GSO_SIT) ||
> - !(type & (SKB_GSO_UDP))))
> - goto out;
This is another one where all that is being checked for is TCP.
> skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
>
> --
> 2.8.0.rc2
>
^ permalink raw reply
* Re: [net-next 08/15] i40e: Allow user to change input set mask for flow director
From: Patil, Kiran @ 2016-05-05 2:47 UTC (permalink / raw)
To: David Miller, jeffrey.t.kirsher; +Cc: netdev, nhorman, sassmann, jogreene
In-Reply-To: <20160426.234814.31916479145118247.davem@davemloft.net>
On 4/26/2016 8:48 PM, David Miller wrote:
> From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
> Date: Tue, 26 Apr 2016 13:55:41 -0700
>
>> From: Kiran Patil <kiran.patil@intel.com>
>>
>> This patch implements feature, which allows user to change
>> input set mask for flow director using side-band channel.
>> This patch adds definition of FLOW_TYPE_MASK into the header file.
>> With this patch, user can now specify less than 4 tuple(src ip, dsp ip,
>> src port, dst port) for flow type TCP4/UDP4.
>>
>> Change-Id: I90052508f8c172c0da5a4b78b949704b4a59ea78
>> Signed-off-by: Kiran Patil <kiran.patil@intel.com>
>> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
>> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
>
> If you want to do this, you have to define the semantics generically
> in include/uapi/linux/ethtool.h so that other drivers can implement
> this too.
>
> Please don't ever implement private, driver specific, interpretations
> of the generic ethtool facilitites.
>
> The semantics and interpretations of the values must absolutely be
> consistent across all drivers in the tree.
>
> Otherwise the user experience is terrible.
>
> Thanks.
>
This is not new feature implemented in i40e driver. This is the original
feature of ethtool which allows user to specify subset of tuple for
setting up flow director.
i40e driver using it same way as ixgbe.
Please let us know if I misinterpreted your response.
Would you recommend that we re-submit patch with better patch
description (indicating that it is not new feature but just enabling
feature).
Thanks,
-- Kiran P.
^ permalink raw reply
* Re: [PATCH net-next 03/14] udp: Don't set skb->encapsulation with RCO
From: Alexander Duyck @ 2016-05-05 2:42 UTC (permalink / raw)
To: Tom Herbert; +Cc: David Miller, Netdev, Kernel Team
In-Reply-To: <1462410164-1953217-4-git-send-email-tom@herbertland.com>
On Wed, May 4, 2016 at 6:02 PM, Tom Herbert <tom@herbertland.com> wrote:
> When RCO is in effect we want to ensure that the outer checksum is
> properly offloaded. Don't set skb->encapsulation in this case to
> ensure that checksum offload is later considered for hw_features
> instead of hw_enc_features.
>
> Signed-off-by: Tom Herbert <tom@herbertland.com>
> ---
> net/ipv4/udp_offload.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
> index b556ef6..4eedec6 100644
> --- a/net/ipv4/udp_offload.c
> +++ b/net/ipv4/udp_offload.c
> @@ -94,11 +94,13 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
> do {
> unsigned int len;
>
> - if (remcsum)
> + if (remcsum) {
> skb->ip_summed = CHECKSUM_NONE;
> -
> - /* Set up inner headers if we are offloading inner checksum */
> - if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + skb->encapsulation = 0;
> + } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + /* Set up inner headers if we are offloading inner
> + * checksum
> + */
> skb_reset_inner_headers(skb);
> skb->encapsulation = 1;
> }
Why are you wasting cycles clearing a value that should have already
been cleared?
We set skb->encapsulation to 0 for the incoming skb before we segment
it. As such all of the segments we get should also not have it set.
It seems like you are just wasting cycles writing it again even though
it isn't written.
- Alex
^ permalink raw reply
* RE: [v9, 6/7] MAINTAINERS: add entry for Freescale SoC driver
From: Qiang Zhao @ 2016-05-05 2:31 UTC (permalink / raw)
To: Yangbo Lu, linux-mmc@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
linux-i2c@vger.kernel.org, iommu@lists.linux-foundation.org,
netdev@vger.kernel.org
Cc: Mark Rutland, ulf.hansson@linaro.org, Russell King, Yangbo Lu,
Bhupesh Sharma, Joerg Roedel, Santosh Shilimkar, Jochen Friedrich,
Yang-Leo Li, Scott Wood, Rob Herring, Claudiu Manoil, Kumar Gala,
Xiaobo Xie
In-Reply-To: <1462332274-13744-7-git-send-email-yangbo.lu@nxp.com>
On Wed, 2016-05-04 at 11:24 +0800, Yangbo Lu wrote:
> -----Original Message-----
> From: Yangbo Lu [mailto:yangbo.lu@nxp.com]
> Sent: Wednesday, May 04, 2016 11:25 AM
> To: linux-mmc@vger.kernel.org; linuxppc-dev@lists.ozlabs.org;
> devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux-
> kernel@vger.kernel.org; linux-clk@vger.kernel.org; linux-i2c@vger.kernel.org;
> iommu@lists.linux-foundation.org; netdev@vger.kernel.org
> Cc: ulf.hansson@linaro.org; Scott Wood <oss@buserror.net>; Mark Rutland
> <mark.rutland@arm.com>; Rob Herring <robh+dt@kernel.org>; Russell King
> <linux@arm.linux.org.uk>; Jochen Friedrich <jochen@scram.de>; Joerg Roedel
> <joro@8bytes.org>; Claudiu Manoil <claudiu.manoil@freescale.com>; Bhupesh
> Sharma <bhupesh.sharma@freescale.com>; Qiang Zhao
> <qiang.zhao@nxp.com>; Kumar Gala <galak@codeaurora.org>; Santosh
> Shilimkar <ssantosh@kernel.org>; Yang-Leo Li <leoyang.li@nxp.com>; Xiaobo
> Xie <xiaobo.xie@nxp.com>; Yangbo Lu <yangbo.lu@nxp.com>
> Subject: [v9, 6/7] MAINTAINERS: add entry for Freescale SoC driver
>
> Add maintainer entry for Freescale SoC driver including the QE library and the
> GUTS driver now. Also add maintainer for QE library.
>
> Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
> ---
> Changes for v8:
> - Added this patch
> Changes for v9:
> - Added linux-arm mail list
> - Removed GUTS driver entry
> ---
> MAINTAINERS | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 42e65d1..ce91db7 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -4622,9 +4622,18 @@ F: drivers/net/ethernet/freescale/fec_ptp.c
> F: drivers/net/ethernet/freescale/fec.h
> F: Documentation/devicetree/bindings/net/fsl-fec.txt
>
> +FREESCALE SOC DRIVER
> +M: Scott Wood <oss@buserror.net>
> +L: linuxppc-dev@lists.ozlabs.org
> +L: linux-arm-kernel@lists.infradead.org
> +S: Maintained
> +F: drivers/soc/fsl/
> +F: include/linux/fsl/
> +
> FREESCALE QUICC ENGINE LIBRARY
> +M: Qiang Zhao <qiang.zhao@nxp.com>
> L: linuxppc-dev@lists.ozlabs.org
> -S: Orphan
> +S: Maintained
> F: drivers/soc/fsl/qe/
> F: include/soc/fsl/*qe*.h
> F: include/soc/fsl/*ucc*.h
> --
> 2.1.0.27.g96db324
I am ok!
-Zhao Qiang
^ permalink raw reply
* Re: task_diag: add a new interface to get information about processes
From: Stephen Hemminger @ 2016-05-05 2:14 UTC (permalink / raw)
To: Andrey Vagin; +Cc: Andy Lutomirski, netdev, David Miller, Eric W. Biedermanm
In-Reply-To: <CANaxB-w2RZ8WZ0ACP-3M9OJ0vgWRM0d74S2WAVwRRY=gXoR5Zg@mail.gmail.com>
On Wed, 4 May 2016 15:34:21 -0700
Andrey Vagin <avagin@openvz.org> wrote:
> Hi Stephen,
>
> On Wed, May 4, 2016 at 1:22 PM, Stephen Hemminger
> <stephen@networkplumber.org> wrote:
> > I understand how reading /proc or /sys can be a bottleneck, but this
> > proposed method using a system call is the wrong way to do this.
> >
> > Why not use netlink like other systems do which allows a message
> > based response which allows for future changes (no fixed datastructures),
> > and is message based.
> >
> > Generic netlink has already been used by several other subsystems.
>
> I used netlink in two first versions of task_diag, but then Andy
> convinced me that netlink interfaces are not ideal for this case. I
> added him into Cс.
>
> Here is a thread with our discussion about using netlink for
> task_diag: https://lkml.org/lkml/2015/12/15/520
> Can I ask you to read it and give your comments? It would be nice to
> find a way how to use netlink sockets instead of creating a new
> interface.
>
> Thanks,
> Andrew
LKML is too busy, no one reads it anymore :-)
Since this is netlink related you need to discuss it on netdev.
The objection seems to be time or creation versus time of use and permissions.
Netlink internally is not really message based all responses are generated
in the context of the send(). You need credentials to create
the socket, but the actual response will occur in the context of the calling
process. I don't see how that is substantially different than a system call.
^ permalink raw reply
* Re: [PATCH net-next 14/14] ip4ip6: Support for GSO/GRO
From: Eric Dumazet @ 2016-05-05 1:20 UTC (permalink / raw)
To: Tom Herbert; +Cc: davem, netdev, kernel-team
In-Reply-To: <1462410164-1953217-15-git-send-email-tom@herbertland.com>
On Wed, 2016-05-04 at 18:02 -0700, Tom Herbert wrote:
> Signed-off-by: Tom Herbert <tom@herbertland.com>
> ---
> diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
> index 928b456..6a811fa 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -484,6 +484,8 @@ enum {
> SKB_GSO_TUNNEL_REMCSUM = 1 << 14,
>
> SKB_GSO_IP6IP6 = 1 << 15,
> +
> + SKB_GSO_IP4IP6 = 1 << 16,
> };
>
Houston, we have a problem.
gso_type is 16bit (unsigned short), or maybe I missed something ?
struct skb_shared_info {
unsigned char nr_frags;
__u8 tx_flags;
unsigned short gso_size;
unsigned short gso_segs;
unsigned short gso_type; <<-->>
^ permalink raw reply
* [PATCH net-next 14/14] ip4ip6: Support for GSO/GRO
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
include/linux/netdev_features.h | 5 ++++-
include/linux/netdevice.h | 1 +
include/linux/skbuff.h | 2 ++
include/net/inet_common.h | 5 +++++
net/ipv4/af_inet.c | 12 +++++++-----
net/ipv6/ip6_offload.c | 33 ++++++++++++++++++++++++++++++++-
net/ipv6/ip6_tunnel.c | 5 ++++-
7 files changed, 55 insertions(+), 8 deletions(-)
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index db52030..d30ea91 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -54,8 +54,9 @@ enum {
*/
NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */
NETIF_F_GSO_IP6IP6_BIT, /* ... IP6IP6 tunnel with TSO */
+ NETIF_F_GSO_IP4IP6_BIT, /* ... IP4IP6 tunnel with TSO */
/**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
- NETIF_F_GSO_IP6IP6_BIT,
+ NETIF_F_GSO_IP4IP6_BIT,
NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
@@ -125,6 +126,7 @@ enum {
#define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP)
#define NETIF_F_GSO_IP6IP6 __NETIF_F(GSO_IP6IP6)
#define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT)
+#define NETIF_F_GSO_IP4IP6 __NETIF_F(GSO_IP4IP6)
#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)
#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM)
#define NETIF_F_TSO_MANGLEID __NETIF_F(TSO_MANGLEID)
@@ -204,6 +206,7 @@ enum {
NETIF_F_GSO_GRE_CSUM | \
NETIF_F_GSO_IPIP | \
NETIF_F_GSO_IP6IP6 | \
+ NETIF_F_GSO_IP4IP6 | \
NETIF_F_GSO_SIT | \
NETIF_F_GSO_UDP_TUNNEL | \
NETIF_F_GSO_UDP_TUNNEL_CSUM)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 724b9d5..4fa678a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4006,6 +4006,7 @@ static inline bool net_gso_ok(netdev_features_t features, int gso_type)
BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_IPIP != (NETIF_F_GSO_IPIP >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_IP6IP6 != (NETIF_F_GSO_IP6IP6 >> NETIF_F_GSO_SHIFT));
+ BUILD_BUG_ON(SKB_GSO_IP4IP6 != (NETIF_F_GSO_IP4IP6 >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_SIT != (NETIF_F_GSO_SIT >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT));
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 928b456..6a811fa 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -484,6 +484,8 @@ enum {
SKB_GSO_TUNNEL_REMCSUM = 1 << 14,
SKB_GSO_IP6IP6 = 1 << 15,
+
+ SKB_GSO_IP4IP6 = 1 << 16,
};
#if BITS_PER_LONG > 32
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index 109e3ee..5d68342 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -39,6 +39,11 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family,
int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
int *addr_len);
+struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff *skb);
+int inet_gro_complete(struct sk_buff *skb, int nhoff);
+struct sk_buff *inet_gso_segment(struct sk_buff *skb,
+ netdev_features_t features);
+
static inline void inet_ctl_sock_destroy(struct sock *sk)
{
if (sk)
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 7f08d45..9d2bf87 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1192,8 +1192,8 @@ int inet_sk_rebuild_header(struct sock *sk)
}
EXPORT_SYMBOL(inet_sk_rebuild_header);
-static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
- netdev_features_t features)
+struct sk_buff *inet_gso_segment(struct sk_buff *skb,
+ netdev_features_t features)
{
bool udpfrag = false, fixedid = false, encap;
struct sk_buff *segs = ERR_PTR(-EINVAL);
@@ -1280,9 +1280,9 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
out:
return segs;
}
+EXPORT_SYMBOL(inet_gso_segment);
-static struct sk_buff **inet_gro_receive(struct sk_buff **head,
- struct sk_buff *skb)
+struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff *skb)
{
const struct net_offload *ops;
struct sk_buff **pp = NULL;
@@ -1398,6 +1398,7 @@ out:
return pp;
}
+EXPORT_SYMBOL(inet_gro_receive);
static struct sk_buff **ipip_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
@@ -1449,7 +1450,7 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
return -EINVAL;
}
-static int inet_gro_complete(struct sk_buff *skb, int nhoff)
+int inet_gro_complete(struct sk_buff *skb, int nhoff)
{
__be16 newlen = htons(skb->len - nhoff);
struct iphdr *iph = (struct iphdr *)(skb->data + nhoff);
@@ -1479,6 +1480,7 @@ out_unlock:
return err;
}
+EXPORT_SYMBOL(inet_gro_complete);
static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
{
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index cea42ad..507f701 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -16,6 +16,7 @@
#include <net/protocol.h>
#include <net/ipv6.h>
+#include <net/inet_common.h>
#include "ip6_offload.h"
@@ -269,6 +270,21 @@ static struct sk_buff **sit_ip6ip6_gro_receive(struct sk_buff **head,
return ipv6_gro_receive(head, skb);
}
+static struct sk_buff **ip4ip6_gro_receive(struct sk_buff **head,
+ struct sk_buff *skb)
+{
+ /* Common GRO receive for SIT and IP6IP6 */
+
+ if (NAPI_GRO_CB(skb)->encap_mark) {
+ NAPI_GRO_CB(skb)->flush = 1;
+ return NULL;
+ }
+
+ NAPI_GRO_CB(skb)->encap_mark = 1;
+
+ return inet_gro_receive(head, skb);
+}
+
static int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
{
const struct net_offload *ops;
@@ -308,6 +324,13 @@ static int ip6ip6_gro_complete(struct sk_buff *skb, int nhoff)
return ipv6_gro_complete(skb, nhoff);
}
+static int ip4ip6_gro_complete(struct sk_buff *skb, int nhoff)
+{
+ skb->encapsulation = 1;
+ skb_shinfo(skb)->gso_type |= SKB_GSO_IP4IP6;
+ return inet_gro_complete(skb, nhoff);
+}
+
static struct packet_offload ipv6_packet_offload __read_mostly = {
.type = cpu_to_be16(ETH_P_IPV6),
.callbacks = {
@@ -325,6 +348,14 @@ static const struct net_offload sit_offload = {
},
};
+static const struct net_offload ip4ip6_offload = {
+ .callbacks = {
+ .gso_segment = inet_gso_segment,
+ .gro_receive = ip4ip6_gro_receive,
+ .gro_complete = ip4ip6_gro_complete,
+ },
+};
+
static const struct net_offload ip6ip6_offload = {
.callbacks = {
.gso_segment = ipv6_gso_segment,
@@ -332,7 +363,6 @@ static const struct net_offload ip6ip6_offload = {
.gro_complete = ip6ip6_gro_complete,
},
};
-
static int __init ipv6_offload_init(void)
{
@@ -345,6 +375,7 @@ static int __init ipv6_offload_init(void)
inet_add_offload(&sit_offload, IPPROTO_IPV6);
inet6_add_offload(&ip6ip6_offload, IPPROTO_IPV6);
+ inet6_add_offload(&ip4ip6_offload, IPPROTO_IPIP);
return 0;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 0d01cef..7ad31b6 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -897,7 +897,7 @@ drop:
static int ip4ip6_rcv(struct sk_buff *skb)
{
- return ipxip6_rcv(skb, IPPROTO_IP, &tpi_v4,
+ return ipxip6_rcv(skb, IPPROTO_IPIP, &tpi_v4,
ip4ip6_dscp_ecn_decapsulate);
}
@@ -1187,6 +1187,9 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
fl6.flowi6_mark = skb->mark;
+ if (iptunnel_handle_offloads(skb, SKB_GSO_IP4IP6))
+ return -1;
+
err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu,
IPPROTO_IPIP);
if (err != 0) {
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 12/14] ip6_tunnel: Add support for fou/gue encapsulation
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Add netlink and setup for encapsulation
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv6/ip6_tunnel.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 83 insertions(+), 6 deletions(-)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2c096ab..0e72af4 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1067,7 +1067,8 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
t->parms.name);
goto tx_err_dst_release;
}
- mtu = dst_mtu(dst) - sizeof(*ipv6h);
+ mtu = dst_mtu(dst) - dev->hard_header_len -
+ sizeof(*ipv6h);
if (encap_limit >= 0) {
max_headroom += 8;
mtu -= 8;
@@ -1131,7 +1132,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
}
max_headroom = LL_RESERVED_SPACE(dst->dev) + sizeof(struct ipv6hdr)
- + dst->header_len;
+ + dst->header_len + t->encap_hlen;
if (max_headroom > dev->needed_headroom)
dev->needed_headroom = max_headroom;
@@ -1322,9 +1323,10 @@ static void ip6_tnl_link_config(struct ip6_tnl *t)
if (rt->dst.dev) {
dev->hard_header_len = rt->dst.dev->hard_header_len +
- sizeof(struct ipv6hdr);
+ sizeof(struct ipv6hdr) + t->hlen;
- dev->mtu = rt->dst.dev->mtu - sizeof(struct ipv6hdr);
+ dev->mtu = rt->dst.dev->mtu - sizeof(struct ipv6hdr) -
+ t->hlen;
if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
dev->mtu -= 8;
@@ -1598,12 +1600,13 @@ static void ip6_tnl_dev_setup(struct net_device *dev)
dev->type = ARPHRD_TUNNEL6;
dev->hard_header_len = LL_MAX_HEADER + sizeof(struct ipv6hdr);
- dev->mtu = ETH_DATA_LEN - sizeof(struct ipv6hdr);
t = netdev_priv(dev);
+ dev->mtu = ETH_DATA_LEN - sizeof(struct ipv6hdr) - t->hlen;
if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
dev->mtu -= 8;
dev->flags |= IFF_NOARP;
dev->addr_len = sizeof(struct in6_addr);
+ dev->features |= NETIF_F_LLTX;
netif_keep_dst(dev);
/* This perm addr will be used as interface identifier by IPv6 */
dev->addr_assign_type = NET_ADDR_RANDOM;
@@ -1621,6 +1624,7 @@ ip6_tnl_dev_init_gen(struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
int ret;
+ int t_hlen;
t->dev = dev;
t->net = dev_net(dev);
@@ -1636,8 +1640,9 @@ ip6_tnl_dev_init_gen(struct net_device *dev)
if (ret)
goto destroy_dst;
- t->hlen = 0;
t->tun_hlen = 0;
+ t->hlen = t->tun_hlen + t->encap_hlen;
+ t_hlen = t->hlen + sizeof(struct ipv6hdr);
return 0;
@@ -1735,13 +1740,55 @@ static void ip6_tnl_netlink_parms(struct nlattr *data[],
parms->proto = nla_get_u8(data[IFLA_IPTUN_PROTO]);
}
+static bool ip6_tnl_netlink_encap_parms(struct nlattr *data[],
+ struct ip_tunnel_encap *ipencap)
+{
+ bool ret = false;
+
+ memset(ipencap, 0, sizeof(*ipencap));
+
+ if (!data)
+ return ret;
+
+ if (data[IFLA_IPTUN_ENCAP_TYPE]) {
+ ret = true;
+ ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
+ ret = true;
+ ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_SPORT]) {
+ ret = true;
+ ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
+ }
+
+ if (data[IFLA_IPTUN_ENCAP_DPORT]) {
+ ret = true;
+ ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
+ }
+
+ return ret;
+}
+
static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct net *net = dev_net(dev);
struct ip6_tnl *nt, *t;
+ struct ip_tunnel_encap ipencap;
nt = netdev_priv(dev);
+
+ if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(nt, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
+
ip6_tnl_netlink_parms(data, &nt->parms);
t = ip6_tnl_locate(net, &nt->parms, 0);
@@ -1758,10 +1805,17 @@ static int ip6_tnl_changelink(struct net_device *dev, struct nlattr *tb[],
struct __ip6_tnl_parm p;
struct net *net = t->net;
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
+ struct ip_tunnel_encap ipencap;
if (dev == ip6n->fb_tnl_dev)
return -EINVAL;
+ if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(t, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
ip6_tnl_netlink_parms(data, &p);
t = ip6_tnl_locate(net, &p, 0);
@@ -1802,6 +1856,14 @@ static size_t ip6_tnl_get_size(const struct net_device *dev)
nla_total_size(4) +
/* IFLA_IPTUN_PROTO */
nla_total_size(1) +
+ /* IFLA_IPTUN_ENCAP_TYPE */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_FLAGS */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_SPORT */
+ nla_total_size(2) +
+ /* IFLA_IPTUN_ENCAP_DPORT */
+ nla_total_size(2) +
0;
}
@@ -1819,6 +1881,17 @@ static int ip6_tnl_fill_info(struct sk_buff *skb, const struct net_device *dev)
nla_put_u32(skb, IFLA_IPTUN_FLAGS, parm->flags) ||
nla_put_u8(skb, IFLA_IPTUN_PROTO, parm->proto))
goto nla_put_failure;
+
+ if (nla_put_u16(skb, IFLA_IPTUN_ENCAP_TYPE,
+ tunnel->encap.type) ||
+ nla_put_be16(skb, IFLA_IPTUN_ENCAP_SPORT,
+ tunnel->encap.sport) ||
+ nla_put_be16(skb, IFLA_IPTUN_ENCAP_DPORT,
+ tunnel->encap.dport) ||
+ nla_put_u16(skb, IFLA_IPTUN_ENCAP_FLAGS,
+ tunnel->encap.flags))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
@@ -1842,6 +1915,10 @@ static const struct nla_policy ip6_tnl_policy[IFLA_IPTUN_MAX + 1] = {
[IFLA_IPTUN_FLOWINFO] = { .type = NLA_U32 },
[IFLA_IPTUN_FLAGS] = { .type = NLA_U32 },
[IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
+ [IFLA_IPTUN_ENCAP_TYPE] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_FLAGS] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_SPORT] = { .type = NLA_U16 },
+ [IFLA_IPTUN_ENCAP_DPORT] = { .type = NLA_U16 },
};
static struct rtnl_link_ops ip6_link_ops __read_mostly = {
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 13/14] ip6ip6: Support for GSO/GRO
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
include/linux/netdev_features.h | 5 ++++-
include/linux/netdevice.h | 1 +
include/linux/skbuff.h | 2 ++
net/core/ethtool.c | 1 +
net/ipv6/ip6_offload.c | 27 +++++++++++++++++++++++----
net/ipv6/ip6_tunnel.c | 3 +++
6 files changed, 34 insertions(+), 5 deletions(-)
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index bc87362..db52030 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -53,8 +53,9 @@ enum {
* headers in software.
*/
NETIF_F_GSO_TUNNEL_REMCSUM_BIT, /* ... TUNNEL with TSO & REMCSUM */
+ NETIF_F_GSO_IP6IP6_BIT, /* ... IP6IP6 tunnel with TSO */
/**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
- NETIF_F_GSO_TUNNEL_REMCSUM_BIT,
+ NETIF_F_GSO_IP6IP6_BIT,
NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
@@ -122,6 +123,7 @@ enum {
#define NETIF_F_GSO_GRE __NETIF_F(GSO_GRE)
#define NETIF_F_GSO_GRE_CSUM __NETIF_F(GSO_GRE_CSUM)
#define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP)
+#define NETIF_F_GSO_IP6IP6 __NETIF_F(GSO_IP6IP6)
#define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT)
#define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL)
#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM)
@@ -201,6 +203,7 @@ enum {
#define NETIF_F_GSO_ENCAP_ALL (NETIF_F_GSO_GRE | \
NETIF_F_GSO_GRE_CSUM | \
NETIF_F_GSO_IPIP | \
+ NETIF_F_GSO_IP6IP6 | \
NETIF_F_GSO_SIT | \
NETIF_F_GSO_UDP_TUNNEL | \
NETIF_F_GSO_UDP_TUNNEL_CSUM)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index f218259..724b9d5 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4005,6 +4005,7 @@ static inline bool net_gso_ok(netdev_features_t features, int gso_type)
BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_IPIP != (NETIF_F_GSO_IPIP >> NETIF_F_GSO_SHIFT));
+ BUILD_BUG_ON(SKB_GSO_IP6IP6 != (NETIF_F_GSO_IP6IP6 >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_SIT != (NETIF_F_GSO_SIT >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT));
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c413c58..928b456 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -482,6 +482,8 @@ enum {
SKB_GSO_PARTIAL = 1 << 13,
SKB_GSO_TUNNEL_REMCSUM = 1 << 14,
+
+ SKB_GSO_IP6IP6 = 1 << 15,
};
#if BITS_PER_LONG > 32
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index bdb4013..a6a6dde 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -85,6 +85,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
[NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
[NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
[NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation",
+ [NETIF_F_GSO_IP6IP6_BIT] = "tx-ip6ip6-segmentation",
[NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation",
[NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
[NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 9ad743b..cea42ad 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -86,7 +86,8 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
if (skb->encapsulation &&
- skb_shinfo(skb)->gso_type & (SKB_GSO_SIT|SKB_GSO_IPIP))
+ skb_shinfo(skb)->gso_type & (SKB_GSO_SIT | SKB_GSO_IPIP |
+ SKB_GSO_IP6IP6))
udpfrag = proto == IPPROTO_UDP && encap;
else
udpfrag = proto == IPPROTO_UDP && !skb->encapsulation;
@@ -253,9 +254,11 @@ out:
return pp;
}
-static struct sk_buff **sit_gro_receive(struct sk_buff **head,
- struct sk_buff *skb)
+static struct sk_buff **sit_ip6ip6_gro_receive(struct sk_buff **head,
+ struct sk_buff *skb)
{
+ /* Common GRO receive for SIT and IP6IP6 */
+
if (NAPI_GRO_CB(skb)->encap_mark) {
NAPI_GRO_CB(skb)->flush = 1;
return NULL;
@@ -298,6 +301,13 @@ static int sit_gro_complete(struct sk_buff *skb, int nhoff)
return ipv6_gro_complete(skb, nhoff);
}
+static int ip6ip6_gro_complete(struct sk_buff *skb, int nhoff)
+{
+ skb->encapsulation = 1;
+ skb_shinfo(skb)->gso_type |= SKB_GSO_IP6IP6;
+ return ipv6_gro_complete(skb, nhoff);
+}
+
static struct packet_offload ipv6_packet_offload __read_mostly = {
.type = cpu_to_be16(ETH_P_IPV6),
.callbacks = {
@@ -310,11 +320,19 @@ static struct packet_offload ipv6_packet_offload __read_mostly = {
static const struct net_offload sit_offload = {
.callbacks = {
.gso_segment = ipv6_gso_segment,
- .gro_receive = sit_gro_receive,
+ .gro_receive = sit_ip6ip6_gro_receive,
.gro_complete = sit_gro_complete,
},
};
+static const struct net_offload ip6ip6_offload = {
+ .callbacks = {
+ .gso_segment = ipv6_gso_segment,
+ .gro_receive = sit_ip6ip6_gro_receive,
+ .gro_complete = ip6ip6_gro_complete,
+ },
+};
+
static int __init ipv6_offload_init(void)
{
@@ -326,6 +344,7 @@ static int __init ipv6_offload_init(void)
dev_add_offload(&ipv6_packet_offload);
inet_add_offload(&sit_offload, IPPROTO_IPV6);
+ inet6_add_offload(&ip6ip6_offload, IPPROTO_IPV6);
return 0;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 0e72af4..0d01cef 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1241,6 +1241,9 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
fl6.flowi6_mark = skb->mark;
+ if (iptunnel_handle_offloads(skb, SKB_GSO_IP6IP6))
+ return -1;
+
err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu,
IPPROTO_IPV6);
if (err != 0) {
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 11/14] ip6_gre: Add support for fou/gue encapsulation
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Add netlink and setup for encapsulation
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv6/ip6_gre.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 75 insertions(+)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index c827ae8..2beb212 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1026,6 +1026,8 @@ static int ip6gre_tunnel_init_common(struct net_device *dev)
tunnel->tun_hlen = gre_calc_hlen(tunnel->parms.o_flags);
+ tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen;
+
t_hlen = tunnel->hlen + sizeof(struct ipv6hdr);
dev->needed_headroom = LL_MAX_HEADER + t_hlen + 4;
@@ -1292,15 +1294,57 @@ static void ip6gre_tap_setup(struct net_device *dev)
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
}
+static bool ip6gre_netlink_encap_parms(struct nlattr *data[],
+ struct ip_tunnel_encap *ipencap)
+{
+ bool ret = false;
+
+ memset(ipencap, 0, sizeof(*ipencap));
+
+ if (!data)
+ return ret;
+
+ if (data[IFLA_GRE_ENCAP_TYPE]) {
+ ret = true;
+ ipencap->type = nla_get_u16(data[IFLA_GRE_ENCAP_TYPE]);
+ }
+
+ if (data[IFLA_GRE_ENCAP_FLAGS]) {
+ ret = true;
+ ipencap->flags = nla_get_u16(data[IFLA_GRE_ENCAP_FLAGS]);
+ }
+
+ if (data[IFLA_GRE_ENCAP_SPORT]) {
+ ret = true;
+ ipencap->sport = nla_get_be16(data[IFLA_GRE_ENCAP_SPORT]);
+ }
+
+ if (data[IFLA_GRE_ENCAP_DPORT]) {
+ ret = true;
+ ipencap->dport = nla_get_be16(data[IFLA_GRE_ENCAP_DPORT]);
+ }
+
+ return ret;
+}
+
static int ip6gre_newlink(struct net *src_net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
struct ip6_tnl *nt;
struct net *net = dev_net(dev);
struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
+ struct ip_tunnel_encap ipencap;
int err;
nt = netdev_priv(dev);
+
+ if (ip6gre_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(nt, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
+
ip6gre_netlink_parms(data, &nt->parms);
if (ip6gre_tunnel_find(net, &nt->parms, dev->type))
@@ -1347,10 +1391,18 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
struct net *net = nt->net;
struct ip6gre_net *ign = net_generic(net, ip6gre_net_id);
struct __ip6_tnl_parm p;
+ struct ip_tunnel_encap ipencap;
if (dev == ign->fb_tunnel_dev)
return -EINVAL;
+ if (ip6gre_netlink_encap_parms(data, &ipencap)) {
+ int err = ip6_tnl_encap_setup(nt, &ipencap);
+
+ if (err < 0)
+ return err;
+ }
+
ip6gre_netlink_parms(data, &p);
t = ip6gre_tunnel_locate(net, &p, 0);
@@ -1404,6 +1456,14 @@ static size_t ip6gre_get_size(const struct net_device *dev)
nla_total_size(4) +
/* IFLA_GRE_FLAGS */
nla_total_size(4) +
+ /* IFLA_GRE_ENCAP_TYPE */
+ nla_total_size(2) +
+ /* IFLA_GRE_ENCAP_FLAGS */
+ nla_total_size(2) +
+ /* IFLA_GRE_ENCAP_SPORT */
+ nla_total_size(2) +
+ /* IFLA_GRE_ENCAP_DPORT */
+ nla_total_size(2) +
0;
}
@@ -1427,6 +1487,17 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
nla_put_be32(skb, IFLA_GRE_FLOWINFO, p->flowinfo) ||
nla_put_u32(skb, IFLA_GRE_FLAGS, p->flags))
goto nla_put_failure;
+
+ if (nla_put_u16(skb, IFLA_GRE_ENCAP_TYPE,
+ t->encap.type) ||
+ nla_put_be16(skb, IFLA_GRE_ENCAP_SPORT,
+ t->encap.sport) ||
+ nla_put_be16(skb, IFLA_GRE_ENCAP_DPORT,
+ t->encap.dport) ||
+ nla_put_u16(skb, IFLA_GRE_ENCAP_FLAGS,
+ t->encap.flags))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
@@ -1445,6 +1516,10 @@ static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = {
[IFLA_GRE_ENCAP_LIMIT] = { .type = NLA_U8 },
[IFLA_GRE_FLOWINFO] = { .type = NLA_U32 },
[IFLA_GRE_FLAGS] = { .type = NLA_U32 },
+ [IFLA_GRE_ENCAP_TYPE] = { .type = NLA_U16 },
+ [IFLA_GRE_ENCAP_FLAGS] = { .type = NLA_U16 },
+ [IFLA_GRE_ENCAP_SPORT] = { .type = NLA_U16 },
+ [IFLA_GRE_ENCAP_DPORT] = { .type = NLA_U16 },
};
static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 10/14] ip6_tun: Add infrastructure for doing encapsulation
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Add encap_hlen and ip_tunnel_encap structure to ip6_tnl. Add functions
for getting encap hlen, setting up encap on a tunnel, performing
encapsulation operation.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
include/net/ip6_tunnel.h | 8 +++++-
net/ipv6/ip6_tunnel.c | 4 +++
net/ipv6/ip6_tunnel_core.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 75 insertions(+), 1 deletion(-)
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
index 1c14c27..1b8db86 100644
--- a/include/net/ip6_tunnel.h
+++ b/include/net/ip6_tunnel.h
@@ -66,10 +66,16 @@ struct ip6_tnl {
__u32 o_seqno; /* The last output seqno */
int hlen; /* tun_hlen + encap_hlen */
int tun_hlen; /* Precalculated header length */
+ int encap_hlen; /* Encap header length (FOU,GUE) */
+ struct ip_tunnel_encap encap;
int mlink;
-
};
+int ip6_tnl_encap_setup(struct ip6_tnl *t,
+ struct ip_tunnel_encap *ipencap);
+int ip6_tnl_encap(struct sk_buff *skb, struct ip6_tnl *t,
+ u8 *protocol, struct flowi6 *fl6);
+
/* Tunnel encapsulation limit destination sub-option */
struct ipv6_tlv_tnl_enc_lim {
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index ade55af..2c096ab 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1013,6 +1013,10 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield,
unsigned int max_headroom = sizeof(struct ipv6hdr);
int err = -1;
+ err = ip6_tnl_encap(skb, t, &proto, fl6);
+ if (err)
+ return err;
+
/* NBMA tunnel */
if (ipv6_addr_any(&t->parms.raddr)) {
struct in6_addr *addr6;
diff --git a/net/ipv6/ip6_tunnel_core.c b/net/ipv6/ip6_tunnel_core.c
index 5f5b79e..94aa414 100644
--- a/net/ipv6/ip6_tunnel_core.c
+++ b/net/ipv6/ip6_tunnel_core.c
@@ -42,3 +42,67 @@ int ip6_tnl_encap_del_ops(const struct ip6_tnl_encap_ops *ops,
}
EXPORT_SYMBOL(ip6_tnl_encap_del_ops);
+static int ip6_encap_hlen(struct ip_tunnel_encap *e)
+{
+ const struct ip6_tnl_encap_ops *ops;
+ int hlen = -EINVAL;
+
+ if (e->type == TUNNEL_ENCAP_NONE)
+ return 0;
+
+ if (e->type >= MAX_IPTUN_ENCAP_OPS)
+ return -EINVAL;
+
+ rcu_read_lock();
+ ops = rcu_dereference(ip6tun_encaps[e->type]);
+ if (likely(ops && ops->encap_hlen))
+ hlen = ops->encap_hlen(e);
+ rcu_read_unlock();
+
+ return hlen;
+}
+
+int ip6_tnl_encap_setup(struct ip6_tnl *t,
+ struct ip_tunnel_encap *ipencap)
+{
+ int hlen;
+
+ memset(&t->encap, 0, sizeof(t->encap));
+
+ hlen = ip6_encap_hlen(ipencap);
+ if (hlen < 0)
+ return hlen;
+
+ t->encap.type = ipencap->type;
+ t->encap.sport = ipencap->sport;
+ t->encap.dport = ipencap->dport;
+ t->encap.flags = ipencap->flags;
+
+ t->encap_hlen = hlen;
+ t->hlen = t->encap_hlen + t->tun_hlen;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ip6_tnl_encap_setup);
+
+int ip6_tnl_encap(struct sk_buff *skb, struct ip6_tnl *t,
+ u8 *protocol, struct flowi6 *fl6)
+{
+ const struct ip6_tnl_encap_ops *ops;
+ int ret = -EINVAL;
+
+ if (t->encap.type == TUNNEL_ENCAP_NONE)
+ return 0;
+
+ if (t->encap.type >= MAX_IPTUN_ENCAP_OPS)
+ return -EINVAL;
+
+ rcu_read_lock();
+ ops = rcu_dereference(ip6tun_encaps[t->encap.type]);
+ if (likely(ops && ops->build_header))
+ ret = ops->build_header(skb, &t->encap, protocol, fl6);
+ rcu_read_unlock();
+
+ return ret;
+}
+EXPORT_SYMBOL(ip6_tnl_encap);
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 09/14] fou: Support IPv6 in fou
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
This patch adds receive path support for IPv6 with fou.
- Add address family to fou structure for open sockets. This supports
AF_INET and AF_INET6. Lookups for fou ports are performed on both the
port number and family.
- In fou and gue receive adjust tot_len in IPv4 header or payload_len
based on address family.
- Allow AF_INET6 in FOU_ATTR_AF netlink attribute.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv4/fou.c | 47 +++++++++++++++++++++++++++++++++++------------
1 file changed, 35 insertions(+), 12 deletions(-)
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 971c8c6..00100d9 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -21,6 +21,7 @@ struct fou {
u8 protocol;
u8 flags;
__be16 port;
+ u8 family;
u16 type;
struct list_head list;
struct rcu_head rcu;
@@ -47,14 +48,17 @@ static inline struct fou *fou_from_sock(struct sock *sk)
return sk->sk_user_data;
}
-static int fou_recv_pull(struct sk_buff *skb, size_t len)
+static int fou_recv_pull(struct sk_buff *skb, struct fou *fou, size_t len)
{
- struct iphdr *iph = ip_hdr(skb);
-
/* Remove 'len' bytes from the packet (UDP header and
* FOU header if present).
*/
- iph->tot_len = htons(ntohs(iph->tot_len) - len);
+ if (fou->family == AF_INET)
+ ip_hdr(skb)->tot_len = htons(ntohs(ip_hdr(skb)->tot_len) - len);
+ else
+ ipv6_hdr(skb)->payload_len =
+ htons(ntohs(ipv6_hdr(skb)->payload_len) - len);
+
__skb_pull(skb, len);
skb_postpull_rcsum(skb, udp_hdr(skb), len);
skb_reset_transport_header(skb);
@@ -68,7 +72,7 @@ static int fou_udp_recv(struct sock *sk, struct sk_buff *skb)
if (!fou)
return 1;
- if (fou_recv_pull(skb, sizeof(struct udphdr)))
+ if (fou_recv_pull(skb, fou, sizeof(struct udphdr)))
goto drop;
return -fou->protocol;
@@ -141,7 +145,11 @@ static int gue_udp_recv(struct sock *sk, struct sk_buff *skb)
hdrlen = sizeof(struct guehdr) + optlen;
- ip_hdr(skb)->tot_len = htons(ntohs(ip_hdr(skb)->tot_len) - len);
+ if (fou->family == AF_INET)
+ ip_hdr(skb)->tot_len = htons(ntohs(ip_hdr(skb)->tot_len) - len);
+ else
+ ipv6_hdr(skb)->payload_len =
+ htons(ntohs(ipv6_hdr(skb)->payload_len) - len);
/* Pull csum through the guehdr now . This can be used if
* there is a remote checksum offload.
@@ -424,7 +432,8 @@ static int fou_add_to_port_list(struct net *net, struct fou *fou)
mutex_lock(&fn->fou_lock);
list_for_each_entry(fout, &fn->fou_list, list) {
- if (fou->port == fout->port) {
+ if (fou->port == fout->port &&
+ fou->family == fout->family) {
mutex_unlock(&fn->fou_lock);
return -EALREADY;
}
@@ -469,8 +478,9 @@ static int fou_create(struct net *net, struct fou_cfg *cfg,
sk = sock->sk;
- fou->flags = cfg->flags;
fou->port = cfg->udp_config.local_udp_port;
+ fou->family = cfg->udp_config.family;
+ fou->flags = cfg->flags;
fou->type = cfg->type;
fou->sock = sock;
@@ -522,12 +532,13 @@ static int fou_destroy(struct net *net, struct fou_cfg *cfg)
{
struct fou_net *fn = net_generic(net, fou_net_id);
__be16 port = cfg->udp_config.local_udp_port;
+ u8 family = cfg->udp_config.family;
int err = -EINVAL;
struct fou *fou;
mutex_lock(&fn->fou_lock);
list_for_each_entry(fou, &fn->fou_list, list) {
- if (fou->port == port) {
+ if (fou->port == port && fou->family == family) {
fou_release(fou);
err = 0;
break;
@@ -565,8 +576,15 @@ static int parse_nl_config(struct genl_info *info,
if (info->attrs[FOU_ATTR_AF]) {
u8 family = nla_get_u8(info->attrs[FOU_ATTR_AF]);
- if (family != AF_INET)
- return -EINVAL;
+ switch (family) {
+ case AF_INET:
+ break;
+ case AF_INET6:
+ cfg->udp_config.ipv6_v6only = 1;
+ break;
+ default:
+ return -EAFNOSUPPORT;
+ }
cfg->udp_config.family = family;
}
@@ -657,6 +675,7 @@ static int fou_nl_cmd_get_port(struct sk_buff *skb, struct genl_info *info)
struct fou_cfg cfg;
struct fou *fout;
__be16 port;
+ u8 family;
int ret;
ret = parse_nl_config(info, &cfg);
@@ -666,6 +685,10 @@ static int fou_nl_cmd_get_port(struct sk_buff *skb, struct genl_info *info)
if (port == 0)
return -EINVAL;
+ family = cfg.udp_config.family;
+ if (family != AF_INET && family != AF_INET6)
+ return -EINVAL;
+
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
@@ -673,7 +696,7 @@ static int fou_nl_cmd_get_port(struct sk_buff *skb, struct genl_info *info)
ret = -ESRCH;
mutex_lock(&fn->fou_lock);
list_for_each_entry(fout, &fn->fou_list, list) {
- if (port == fout->port) {
+ if (port == fout->port && family == fout->family) {
ret = fou_dump_info(fout, info->snd_portid,
info->snd_seq, 0, msg,
info->genlhdr->cmd);
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 07/14] ipv6: Fix nexthdr for reinjection
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
In ip6_input_finish the protocol handle returns a value greater than
zero the packet needs to be resubmitted using the returned protocol.
The returned protocol is being ignored and each time through resubmit
nexthdr is taken from an offest in the packet. This patch fixes that
so that nexthdr is taken from return value of the protocol handler.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv6/ip6_input.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 6ed5601..2a0258a 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -222,13 +222,14 @@ static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *sk
*/
rcu_read_lock();
-resubmit:
+
idev = ip6_dst_idev(skb_dst(skb));
if (!pskb_pull(skb, skb_transport_offset(skb)))
goto discard;
nhoff = IP6CB(skb)->nhoff;
nexthdr = skb_network_header(skb)[nhoff];
+resubmit:
raw = raw6_local_deliver(skb, nexthdr);
ipprot = rcu_dereference(inet6_protos[nexthdr]);
if (ipprot) {
@@ -256,10 +257,12 @@ resubmit:
goto discard;
ret = ipprot->handler(skb);
- if (ret > 0)
+ if (ret > 0) {
+ nexthdr = ret;
goto resubmit;
- else if (ret == 0)
+ } else if (ret == 0) {
__IP6_INC_STATS(net, idev, IPSTATS_MIB_INDELIVERS);
+ }
} else {
if (!raw) {
if (xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 08/14] ipv6: Change "final" protocol processing for encapsulation
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
When performing foo-over-UDP, UDP are receveived processed by the
encapsulation header which returns another protocol to process.
This may result in processing two (or more) protocols in the
loop that are marked as INET6_PROTO_FINAL. The actions taken
for hitting a final protocol, in particular the skb_postpull_rcsum
can only be performed.
This patch set adds a check of a final protocol has been seen. The
rules are:
- If the final protocol has not been seen any protocol is processed
(final and non-final). In the case of a final protocol, the final
actions are taken (like the skb_postpull_rcsum)
- If a final protocol has been seen (e.g. an encapsulating UDP
header) then no further non-final protocols are allowed
(e.g. extension headers). For more final protocols the
final actions are not taken (e.g. skb_postpull_rcsum).
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv6/ip6_input.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 2a0258a..7d98d01 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -216,6 +216,7 @@ static int ip6_input_finish(struct net *net, struct sock *sk, struct sk_buff *sk
unsigned int nhoff;
int nexthdr;
bool raw;
+ bool have_final = false;
/*
* Parse extension headers
@@ -235,9 +236,21 @@ resubmit:
if (ipprot) {
int ret;
- if (ipprot->flags & INET6_PROTO_FINAL) {
+ if (have_final) {
+ if (!(ipprot->flags & INET6_PROTO_FINAL)) {
+ /* Once we've seen a final protocol don't
+ * allow encapsulation on any non-final
+ * ones. This allows foo in UDP encapsulation
+ * to work.
+ */
+ goto discard;
+ }
+ } else if (ipprot->flags & INET6_PROTO_FINAL) {
const struct ipv6hdr *hdr;
+ /* Only do this once for first final protocol */
+ have_final = true;
+
/* Free reference early: we don't need it any more,
and it may hold ip_conntrack module loaded
indefinitely. */
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 06/14] fou: Add encap ops for IPv6 tunnels
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Thsi packet adds IP tunnel encapsulation operations for IPv6. This
includes the infrastructure to add and delete operations. IPv6 variants
for fou6_build_header and gue6_build_header are added in a new
fou6 module. These encapsulation operations for fou and gue are
automatically added when the fou6 module loads.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
include/net/fou.h | 2 +-
include/net/ip6_tunnel.h | 14 +++++
net/ipv6/Makefile | 4 +-
net/ipv6/fou6.c | 140 +++++++++++++++++++++++++++++++++++++++++++++
net/ipv6/ip6_tunnel_core.c | 44 ++++++++++++++
5 files changed, 202 insertions(+), 2 deletions(-)
create mode 100644 net/ipv6/fou6.c
create mode 100644 net/ipv6/ip6_tunnel_core.c
diff --git a/include/net/fou.h b/include/net/fou.h
index 7d2fda2..f5cc691 100644
--- a/include/net/fou.h
+++ b/include/net/fou.h
@@ -9,7 +9,7 @@
#include <net/udp.h>
size_t fou_encap_hlen(struct ip_tunnel_encap *e);
-static size_t gue_encap_hlen(struct ip_tunnel_encap *e);
+size_t gue_encap_hlen(struct ip_tunnel_encap *e);
int __fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
u8 *protocol, __be16 *sport, int type);
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
index fb9e015..1c14c27 100644
--- a/include/net/ip6_tunnel.h
+++ b/include/net/ip6_tunnel.h
@@ -34,6 +34,20 @@ struct __ip6_tnl_parm {
__be32 o_key;
};
+struct ip6_tnl_encap_ops {
+ size_t (*encap_hlen)(struct ip_tunnel_encap *e);
+ int (*build_header)(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, struct flowi6 *fl6);
+};
+
+extern const struct ip6_tnl_encap_ops __rcu *
+ ip6tun_encaps[MAX_IPTUN_ENCAP_OPS];
+
+int ip6_tnl_encap_add_ops(const struct ip6_tnl_encap_ops *op,
+ unsigned int num);
+int ip6_tnl_encap_del_ops(const struct ip6_tnl_encap_ops *op,
+ unsigned int num);
+
/* IPv6 tunnel */
struct ip6_tnl {
struct ip6_tnl __rcu *next; /* next tunnel in list */
diff --git a/net/ipv6/Makefile b/net/ipv6/Makefile
index 5e9d6bf..5cf4a1f 100644
--- a/net/ipv6/Makefile
+++ b/net/ipv6/Makefile
@@ -9,7 +9,7 @@ ipv6-objs := af_inet6.o anycast.o ip6_output.o ip6_input.o addrconf.o \
route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o udplite.o \
raw.o icmp.o mcast.o reassembly.o tcp_ipv6.o ping.o \
exthdrs.o datagram.o ip6_flowlabel.o inet6_connection_sock.o \
- udp_offload.o
+ udp_offload.o ip6_tunnel_core.o
ipv6-offload := ip6_offload.o tcpv6_offload.o exthdrs_offload.o
@@ -43,6 +43,8 @@ obj-$(CONFIG_IPV6_SIT) += sit.o
obj-$(CONFIG_IPV6_TUNNEL) += ip6_tunnel.o
obj-$(CONFIG_IPV6_GRE) += ip6_gre.o
+obj-$(CONFIG_NET_FOU) += fou6.o
+
obj-y += addrconf_core.o exthdrs_core.o ip6_checksum.o ip6_icmp.o
obj-$(CONFIG_INET) += output_core.o protocol.o $(ipv6-offload)
diff --git a/net/ipv6/fou6.c b/net/ipv6/fou6.c
new file mode 100644
index 0000000..c972d0b
--- /dev/null
+++ b/net/ipv6/fou6.c
@@ -0,0 +1,140 @@
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/socket.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <linux/udp.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <net/fou.h>
+#include <net/ip.h>
+#include <net/ip6_tunnel.h>
+#include <net/ip6_checksum.h>
+#include <net/protocol.h>
+#include <net/udp.h>
+#include <net/udp_tunnel.h>
+
+static void fou6_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ struct flowi6 *fl6, u8 *protocol, __be16 sport)
+{
+ struct udphdr *uh;
+
+ skb_push(skb, sizeof(struct udphdr));
+ skb_reset_transport_header(skb);
+
+ uh = udp_hdr(skb);
+
+ uh->dest = e->dport;
+ uh->source = sport;
+ uh->len = htons(skb->len);
+ udp6_set_csum(!(e->flags & TUNNEL_ENCAP_FLAG_CSUM6), skb,
+ &fl6->saddr, &fl6->daddr, skb->len);
+
+ *protocol = IPPROTO_UDP;
+}
+
+int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, struct flowi6 *fl6)
+{
+ __be16 sport;
+ int err;
+ int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ?
+ SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
+
+ err = __fou_build_header(skb, e, protocol, &sport, type);
+ if (err)
+ return err;
+
+ fou6_build_udp(skb, e, fl6, protocol, sport);
+
+ return 0;
+}
+EXPORT_SYMBOL(fou6_build_header);
+
+int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, struct flowi6 *fl6)
+{
+ __be16 sport;
+ int err;
+ int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM6 ?
+ SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
+
+ err = __gue_build_header(skb, e, protocol, &sport, type);
+ if (err)
+ return err;
+
+ fou6_build_udp(skb, e, fl6, protocol, sport);
+
+ return 0;
+}
+EXPORT_SYMBOL(gue6_build_header);
+
+#ifdef CONFIG_NET_FOU_IP_TUNNELS
+
+static const struct ip6_tnl_encap_ops fou_ip6tun_ops = {
+ .encap_hlen = fou_encap_hlen,
+ .build_header = fou6_build_header,
+};
+
+static const struct ip6_tnl_encap_ops gue_ip6tun_ops = {
+ .encap_hlen = gue_encap_hlen,
+ .build_header = gue6_build_header,
+};
+
+static int ip6_tnl_encap_add_fou_ops(void)
+{
+ int ret;
+
+ ret = ip6_tnl_encap_add_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
+ if (ret < 0) {
+ pr_err("can't add fou6 ops\n");
+ return ret;
+ }
+
+ ret = ip6_tnl_encap_add_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE);
+ if (ret < 0) {
+ pr_err("can't add gue6 ops\n");
+ ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ip6_tnl_encap_del_fou_ops(void)
+{
+ ip6_tnl_encap_del_ops(&fou_ip6tun_ops, TUNNEL_ENCAP_FOU);
+ ip6_tnl_encap_del_ops(&gue_ip6tun_ops, TUNNEL_ENCAP_GUE);
+}
+
+#else
+
+static int ip6_tnl_encap_add_fou_ops(void)
+{
+ return 0;
+}
+
+static void ip6_tnl_encap_del_fou_ops(void)
+{
+}
+
+#endif
+
+static int __init fou6_init(void)
+{
+ int ret;
+
+ ret = ip6_tnl_encap_add_fou_ops();
+
+ return ret;
+}
+
+static void __exit fou6_fini(void)
+{
+ ip6_tnl_encap_del_fou_ops();
+}
+
+module_init(fou6_init);
+module_exit(fou6_fini);
+MODULE_AUTHOR("Tom Herbert <therbert@google.com>");
+MODULE_LICENSE("GPL");
diff --git a/net/ipv6/ip6_tunnel_core.c b/net/ipv6/ip6_tunnel_core.c
new file mode 100644
index 0000000..5f5b79e
--- /dev/null
+++ b/net/ipv6/ip6_tunnel_core.c
@@ -0,0 +1,44 @@
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/if.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/net.h>
+#include <linux/in6.h>
+#include <net/ip6_tunnel.h>
+
+const struct ip6_tnl_encap_ops __rcu *
+ ip6tun_encaps[MAX_IPTUN_ENCAP_OPS] __read_mostly;
+EXPORT_SYMBOL(ip6tun_encaps);
+
+int ip6_tnl_encap_add_ops(const struct ip6_tnl_encap_ops *ops,
+ unsigned int num)
+{
+ if (num >= MAX_IPTUN_ENCAP_OPS)
+ return -ERANGE;
+
+ return !cmpxchg((const struct ip6_tnl_encap_ops **)
+ &ip6tun_encaps[num],
+ NULL, ops) ? 0 : -1;
+}
+EXPORT_SYMBOL(ip6_tnl_encap_add_ops);
+
+int ip6_tnl_encap_del_ops(const struct ip6_tnl_encap_ops *ops,
+ unsigned int num)
+{
+ int ret;
+
+ if (num >= MAX_IPTUN_ENCAP_OPS)
+ return -ERANGE;
+
+ ret = (cmpxchg((const struct ip6_tnl_encap_ops **)
+ &ip6tun_encaps[num],
+ ops, NULL) == ops) ? 0 : -1;
+
+ synchronize_net();
+
+ return ret;
+}
+EXPORT_SYMBOL(ip6_tnl_encap_del_ops);
+
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 04/14] fou: Call setup_udp_tunnel_sock
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Use helper function to set up UDP tunnel related information for a fou
socket.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv4/fou.c | 50 ++++++++++++++++----------------------------------
1 file changed, 16 insertions(+), 34 deletions(-)
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 7ac5ec8..a8b5cbf 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -446,31 +446,13 @@ static void fou_release(struct fou *fou)
kfree_rcu(fou, rcu);
}
-static int fou_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
-{
- udp_sk(sk)->encap_rcv = fou_udp_recv;
- udp_sk(sk)->gro_receive = fou_gro_receive;
- udp_sk(sk)->gro_complete = fou_gro_complete;
- fou_from_sock(sk)->protocol = cfg->protocol;
-
- return 0;
-}
-
-static int gue_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
-{
- udp_sk(sk)->encap_rcv = gue_udp_recv;
- udp_sk(sk)->gro_receive = gue_gro_receive;
- udp_sk(sk)->gro_complete = gue_gro_complete;
-
- return 0;
-}
-
static int fou_create(struct net *net, struct fou_cfg *cfg,
struct socket **sockp)
{
struct socket *sock = NULL;
struct fou *fou = NULL;
struct sock *sk;
+ struct udp_tunnel_sock_cfg tunnel_cfg;
int err;
/* Open UDP socket */
@@ -489,33 +471,33 @@ static int fou_create(struct net *net, struct fou_cfg *cfg,
fou->flags = cfg->flags;
fou->port = cfg->udp_config.local_udp_port;
+ fou->type = cfg->type;
+ fou->sock = sock;
+
+ memset(&tunnel_cfg, 0, sizeof(tunnel_cfg));
+ tunnel_cfg.encap_type = 1;
+ tunnel_cfg.sk_user_data = fou;
+ tunnel_cfg.encap_destroy = NULL;
/* Initial for fou type */
switch (cfg->type) {
case FOU_ENCAP_DIRECT:
- err = fou_encap_init(sk, fou, cfg);
- if (err)
- goto error;
+ tunnel_cfg.encap_rcv = fou_udp_recv;
+ tunnel_cfg.gro_receive = fou_gro_receive;
+ tunnel_cfg.gro_complete = fou_gro_complete;
+ fou->protocol = cfg->protocol;
break;
case FOU_ENCAP_GUE:
- err = gue_encap_init(sk, fou, cfg);
- if (err)
- goto error;
+ tunnel_cfg.encap_rcv = gue_udp_recv;
+ tunnel_cfg.gro_receive = gue_gro_receive;
+ tunnel_cfg.gro_complete = gue_gro_complete;
break;
default:
err = -EINVAL;
goto error;
}
- fou->type = cfg->type;
-
- udp_sk(sk)->encap_type = 1;
- udp_encap_enable();
-
- sk->sk_user_data = fou;
- fou->sock = sock;
-
- inet_inc_convert_csum(sk);
+ setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
sk->sk_allocation = GFP_ATOMIC;
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 05/14] fou: Split out {fou,gue}_build_header
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
Create __fou_build_header and __gue_build_header. These implement the
protocol generic parts of building the fou and gue header.
fou_build_header and gue_build_header implement the IPv4 specific
functions and call the __*_build_header functions.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
include/net/fou.h | 8 ++++----
net/ipv4/fou.c | 47 +++++++++++++++++++++++++++++++++++++----------
2 files changed, 41 insertions(+), 14 deletions(-)
diff --git a/include/net/fou.h b/include/net/fou.h
index 19b8a0c..7d2fda2 100644
--- a/include/net/fou.h
+++ b/include/net/fou.h
@@ -11,9 +11,9 @@
size_t fou_encap_hlen(struct ip_tunnel_encap *e);
static size_t gue_encap_hlen(struct ip_tunnel_encap *e);
-int fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
- u8 *protocol, struct flowi4 *fl4);
-int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
- u8 *protocol, struct flowi4 *fl4);
+int __fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, __be16 *sport, int type);
+int __gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, __be16 *sport, int type);
#endif
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index a8b5cbf..971c8c6 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -778,6 +778,22 @@ static void fou_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e,
*protocol = IPPROTO_UDP;
}
+int __fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, __be16 *sport, int type)
+{
+ int err;
+
+ err = iptunnel_handle_offloads(skb, type);
+ if (err)
+ return err;
+
+ *sport = e->sport ? : udp_flow_src_port(dev_net(skb->dev),
+ skb, 0, 0, false);
+
+ return 0;
+}
+EXPORT_SYMBOL(__fou_build_header);
+
int fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
u8 *protocol, struct flowi4 *fl4)
{
@@ -786,26 +802,21 @@ int fou_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
__be16 sport;
int err;
- err = iptunnel_handle_offloads(skb, type);
+ err = __fou_build_header(skb, e, protocol, &sport, type);
if (err)
return err;
- sport = e->sport ? : udp_flow_src_port(dev_net(skb->dev),
- skb, 0, 0, false);
fou_build_udp(skb, e, fl4, protocol, sport);
return 0;
}
EXPORT_SYMBOL(fou_build_header);
-int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
- u8 *protocol, struct flowi4 *fl4)
+int __gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, __be16 *sport, int type)
{
- int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM ? SKB_GSO_UDP_TUNNEL_CSUM :
- SKB_GSO_UDP_TUNNEL;
struct guehdr *guehdr;
size_t hdrlen, optlen = 0;
- __be16 sport;
void *data;
bool need_priv = false;
int err;
@@ -824,8 +835,8 @@ int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
return err;
/* Get source port (based on flow hash) before skb_push */
- sport = e->sport ? : udp_flow_src_port(dev_net(skb->dev),
- skb, 0, 0, false);
+ *sport = e->sport ? : udp_flow_src_port(dev_net(skb->dev),
+ skb, 0, 0, false);
hdrlen = sizeof(struct guehdr) + optlen;
@@ -870,6 +881,22 @@ int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
}
+ return 0;
+}
+EXPORT_SYMBOL(__gue_build_header);
+
+int gue_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+ u8 *protocol, struct flowi4 *fl4)
+{
+ int type = e->flags & TUNNEL_ENCAP_FLAG_CSUM ? SKB_GSO_UDP_TUNNEL_CSUM :
+ SKB_GSO_UDP_TUNNEL;
+ __be16 sport;
+ int err;
+
+ err = __gue_build_header(skb, e, protocol, &sport, type);
+ if (err)
+ return err;
+
fou_build_udp(skb, e, fl4, protocol, sport);
return 0;
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 03/14] udp: Don't set skb->encapsulation with RCO
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
When RCO is in effect we want to ensure that the outer checksum is
properly offloaded. Don't set skb->encapsulation in this case to
ensure that checksum offload is later considered for hw_features
instead of hw_enc_features.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv4/udp_offload.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index b556ef6..4eedec6 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -94,11 +94,13 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
do {
unsigned int len;
- if (remcsum)
+ if (remcsum) {
skb->ip_summed = CHECKSUM_NONE;
-
- /* Set up inner headers if we are offloading inner checksum */
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ skb->encapsulation = 0;
+ } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ /* Set up inner headers if we are offloading inner
+ * checksum
+ */
skb_reset_inner_headers(skb);
skb->encapsulation = 1;
}
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 02/14] gre6: Fix flag translations
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
GRE for IPv6 does not properly translate for GRE flags to tunnel
flags and vice versa. This patch fixes that.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv6/ip6_gre.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 1012774..c827ae8 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -798,8 +798,8 @@ static void ip6gre_tnl_parm_from_user(struct __ip6_tnl_parm *p,
p->link = u->link;
p->i_key = u->i_key;
p->o_key = u->o_key;
- p->i_flags = u->i_flags;
- p->o_flags = u->o_flags;
+ p->i_flags = gre_flags_to_tnl_flags(u->i_flags);
+ p->o_flags = gre_flags_to_tnl_flags(u->o_flags);
memcpy(p->name, u->name, sizeof(u->name));
}
@@ -816,8 +816,8 @@ static void ip6gre_tnl_parm_to_user(struct ip6_tnl_parm2 *u,
u->link = p->link;
u->i_key = p->i_key;
u->o_key = p->o_key;
- u->i_flags = p->i_flags;
- u->o_flags = p->o_flags;
+ u->i_flags = gre_tnl_flags_to_gre_flags(p->i_flags);
+ u->o_flags = gre_tnl_flags_to_gre_flags(p->o_flags);
memcpy(u->name, p->name, sizeof(u->name));
}
@@ -1216,10 +1216,12 @@ static void ip6gre_netlink_parms(struct nlattr *data[],
parms->link = nla_get_u32(data[IFLA_GRE_LINK]);
if (data[IFLA_GRE_IFLAGS])
- parms->i_flags = nla_get_be16(data[IFLA_GRE_IFLAGS]);
+ parms->i_flags = gre_flags_to_tnl_flags(
+ nla_get_be16(data[IFLA_GRE_IFLAGS]));
if (data[IFLA_GRE_OFLAGS])
- parms->o_flags = nla_get_be16(data[IFLA_GRE_OFLAGS]);
+ parms->o_flags = gre_flags_to_tnl_flags(
+ nla_get_be16(data[IFLA_GRE_OFLAGS]));
if (data[IFLA_GRE_IKEY])
parms->i_key = nla_get_be32(data[IFLA_GRE_IKEY]);
@@ -1411,8 +1413,10 @@ static int ip6gre_fill_info(struct sk_buff *skb, const struct net_device *dev)
struct __ip6_tnl_parm *p = &t->parms;
if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) ||
- nla_put_be16(skb, IFLA_GRE_IFLAGS, p->i_flags) ||
- nla_put_be16(skb, IFLA_GRE_OFLAGS, p->o_flags) ||
+ nla_put_be16(skb, IFLA_GRE_IFLAGS,
+ gre_tnl_flags_to_gre_flags(p->i_flags)) ||
+ nla_put_be16(skb, IFLA_GRE_OFLAGS,
+ gre_tnl_flags_to_gre_flags(p->o_flags)) ||
nla_put_be32(skb, IFLA_GRE_IKEY, p->i_key) ||
nla_put_be32(skb, IFLA_GRE_OKEY, p->o_key) ||
nla_put_in6_addr(skb, IFLA_GRE_LOCAL, &p->laddr) ||
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 01/14] gso: Remove arbitrary checks for unsupported GSO
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
In-Reply-To: <1462410164-1953217-1-git-send-email-tom@herbertland.com>
In several gso_segment functions there are checks of gso_type against
a seemingly abitrary list of SKB_GSO_* flags. This seems like an
attempt to identify unsupported GSO types, but since the stack is
the one that set these GSO types in the first place this seems
unnecessary to do. If a combination isn't valid in the first
place that stack should not allow setting it.
This is a code simplication especially for add new GSO types.
Signed-off-by: Tom Herbert <tom@herbertland.com>
---
net/ipv4/af_inet.c | 18 ------------------
net/ipv4/gre_offload.c | 14 --------------
net/ipv4/tcp_offload.c | 19 -------------------
net/ipv4/udp_offload.c | 10 ----------
net/ipv6/ip6_offload.c | 18 ------------------
net/ipv6/udp_offload.c | 13 -------------
6 files changed, 92 deletions(-)
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 2e6e65f..7f08d45 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1205,24 +1205,6 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
int ihl;
int id;
- if (unlikely(skb_shinfo(skb)->gso_type &
- ~(SKB_GSO_TCPV4 |
- SKB_GSO_UDP |
- SKB_GSO_DODGY |
- SKB_GSO_TCP_ECN |
- SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_IPIP |
- SKB_GSO_SIT |
- SKB_GSO_TCPV6 |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM |
- SKB_GSO_TCP_FIXEDID |
- SKB_GSO_TUNNEL_REMCSUM |
- SKB_GSO_PARTIAL |
- 0)))
- goto out;
-
skb_reset_network_header(skb);
nhoff = skb_network_header(skb) - skb_mac_header(skb);
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index e88190a..ecd1e09 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -26,20 +26,6 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
int gre_offset, outer_hlen;
bool need_csum, ufo;
- if (unlikely(skb_shinfo(skb)->gso_type &
- ~(SKB_GSO_TCPV4 |
- SKB_GSO_TCPV6 |
- SKB_GSO_UDP |
- SKB_GSO_DODGY |
- SKB_GSO_TCP_ECN |
- SKB_GSO_TCP_FIXEDID |
- SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_IPIP |
- SKB_GSO_SIT |
- SKB_GSO_PARTIAL)))
- goto out;
-
if (!skb->encapsulation)
goto out;
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
index 02737b6..5c59649 100644
--- a/net/ipv4/tcp_offload.c
+++ b/net/ipv4/tcp_offload.c
@@ -83,25 +83,6 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
/* Packet is from an untrusted source, reset gso_segs. */
- int type = skb_shinfo(skb)->gso_type;
-
- if (unlikely(type &
- ~(SKB_GSO_TCPV4 |
- SKB_GSO_DODGY |
- SKB_GSO_TCP_ECN |
- SKB_GSO_TCP_FIXEDID |
- SKB_GSO_TCPV6 |
- SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_IPIP |
- SKB_GSO_SIT |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM |
- SKB_GSO_TUNNEL_REMCSUM |
- 0) ||
- !(type & (SKB_GSO_TCPV4 |
- SKB_GSO_TCPV6))))
- goto out;
skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 097060de..b556ef6 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -209,16 +209,6 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
/* Packet is from an untrusted source, reset gso_segs. */
- int type = skb_shinfo(skb)->gso_type;
-
- if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM |
- SKB_GSO_TUNNEL_REMCSUM |
- SKB_GSO_IPIP |
- SKB_GSO_GRE | SKB_GSO_GRE_CSUM) ||
- !(type & (SKB_GSO_UDP))))
- goto out;
skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index f5eb184..9ad743b 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -69,24 +69,6 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
bool encap, udpfrag;
int nhoff;
- if (unlikely(skb_shinfo(skb)->gso_type &
- ~(SKB_GSO_TCPV4 |
- SKB_GSO_UDP |
- SKB_GSO_DODGY |
- SKB_GSO_TCP_ECN |
- SKB_GSO_TCP_FIXEDID |
- SKB_GSO_TCPV6 |
- SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_IPIP |
- SKB_GSO_SIT |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM |
- SKB_GSO_TUNNEL_REMCSUM |
- SKB_GSO_PARTIAL |
- 0)))
- goto out;
-
skb_reset_network_header(skb);
nhoff = skb_network_header(skb) - skb_mac_header(skb);
if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index 5429f6b..ac858c4 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -36,19 +36,6 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
/* Packet is from an untrusted source, reset gso_segs. */
- int type = skb_shinfo(skb)->gso_type;
-
- if (unlikely(type & ~(SKB_GSO_UDP |
- SKB_GSO_DODGY |
- SKB_GSO_UDP_TUNNEL |
- SKB_GSO_UDP_TUNNEL_CSUM |
- SKB_GSO_TUNNEL_REMCSUM |
- SKB_GSO_GRE |
- SKB_GSO_GRE_CSUM |
- SKB_GSO_IPIP |
- SKB_GSO_SIT) ||
- !(type & (SKB_GSO_UDP))))
- goto out;
skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
--
2.8.0.rc2
^ permalink raw reply related
* [PATCH net-next 00/14] ipv6: Enable GUEoIPv6 and more fixes for v6 tunneling
From: Tom Herbert @ 2016-05-05 1:02 UTC (permalink / raw)
To: davem, netdev; +Cc: kernel-team
This patch set:
- Fixes GRE6 to process translate flags correctly from configuration
- Adds support for GSO and GRO for ip6ip6 and ip4ip6
- Add support for FOU and GUE in IPv6
- Support GRE, ip6ip6 and ip4ip6 over FOU/GUE
- Fixes ip6_input to deal with UDP encapsulations
- Some other minor fixes
Tested:
Tested a variety of case, but not the full matrix (which is quite
large now). Most of the obivous cases (e.g. GRE) work fine. Still
some issues probably with GSO/GRO being effective in all cases.
- IPv4/GRE/GUE/IPv6 with RCO
1 TCP_STREAM
6616 Mbps
200 TCP_RR
1244043 tps
141/243/446 90/95/99% latencies
86.61% CPU utilization
- IPv6/GRE/GUE/IPv6 with RCO
1 TCP_STREAM
6940 Mbps
200 TCP_RR
1270903 tps
138/236/440 90/95/99% latencies
87.51% CPU utilization
- IP6IP6
1 TCP_STREAM
2576 Mbps
200 TCP_RR
498981 tps
388/498/631 90/95/99% latencies
19.75% CPU utilization (1 CPU saturated)
- IP6IP6/GUE/IPv6 with RCO
1 TCP_STREAM
1854 Mbps
200 TCP_RR
1233818 tps
143/244/451 90/95/99% latencies
87.57 CPU utilization
- IP4IP6
1 TCP_STREAM
200 TCP_RR
763774 tps
250/318/466 90/95/99% latencies
35.25% CPU utilization (1 CPU saturated)
- GRE with keyid
200 TCP_RR
744173 tps
258/332/461 90/95/99% latencies
34.59% CPU utilization (1 CPU saturated)
Tom Herbert (14):
gso: Remove arbitrary checks for unsupported GSO
gre6: Fix flag translations
udp: Don't set skb->encapsulation with RCO
fou: Call setup_udp_tunnel_sock
fou: Split out {fou,gue}_build_header
fou: Add encap ops for IPv6 tunnels
ipv6: Fix nexthdr for reinjection
ipv6: Change "final" protocol processing for encapsulation
fou: Support IPv6 in fou
ip6_tun: Add infrastructure for doing encapsulation
ip6_gre: Add support for fou/gue encapsulation
ip6_tunnel: Add support for fou/gue encapsulation
ip6ip6: Support for GSO/GRO
ip4ip6: Support for GSO/GRO
include/linux/netdev_features.h | 8 ++-
include/linux/netdevice.h | 2 +
include/linux/skbuff.h | 4 ++
include/net/fou.h | 10 +--
include/net/inet_common.h | 5 ++
include/net/ip6_tunnel.h | 22 +++++-
net/core/ethtool.c | 1 +
net/ipv4/af_inet.c | 30 ++-------
net/ipv4/fou.c | 144 ++++++++++++++++++++++++----------------
net/ipv4/gre_offload.c | 14 ----
net/ipv4/tcp_offload.c | 19 ------
net/ipv4/udp_offload.c | 20 ++----
net/ipv6/Makefile | 4 +-
net/ipv6/fou6.c | 140 ++++++++++++++++++++++++++++++++++++++
net/ipv6/ip6_gre.c | 95 +++++++++++++++++++++++---
net/ipv6/ip6_input.c | 24 +++++--
net/ipv6/ip6_offload.c | 76 +++++++++++++++------
net/ipv6/ip6_tunnel.c | 101 ++++++++++++++++++++++++++--
net/ipv6/ip6_tunnel_core.c | 108 ++++++++++++++++++++++++++++++
net/ipv6/udp_offload.c | 13 ----
20 files changed, 652 insertions(+), 188 deletions(-)
create mode 100644 net/ipv6/fou6.c
create mode 100644 net/ipv6/ip6_tunnel_core.c
--
2.8.0.rc2
^ permalink raw reply
* [PATCH net-next v3] macvtap: add namespace support to the sysfs device class
From: Marc Angel @ 2016-05-05 0:34 UTC (permalink / raw)
To: netdev; +Cc: ebiederm
In-Reply-To: <20160504.160445.640444073175153113.davem@davemloft.net>
When creating macvtaps that are expected to have the same ifindex
in different network namespaces, only the first one will succeed.
The others will fail with a sysfs_warn_dup warning due to them trying
to create the following sysfs link (with 'NN' the ifindex of macvtapX):
/sys/class/macvtap/tapNN -> /sys/devices/virtual/net/macvtapX/tapNN
This is reproducible by running the following commands:
ip netns add ns1
ip netns add ns2
ip link add veth0 type veth peer name veth1
ip link set veth0 netns ns1
ip link set veth1 netns ns2
ip netns exec ns1 ip l add link veth0 macvtap0 type macvtap
ip netns exec ns2 ip l add link veth1 macvtap1 type macvtap
The last command will fail with "RTNETLINK answers: File exists" (along
with the kernel warning) but retrying it will work because the ifindex
was incremented.
The 'net' device class is isolated between network namespaces so each
one has its own hierarchy of net devices.
This isn't the case for the 'macvtap' device class.
The problem occurs half-way through the netdev registration, when
`macvtap_device_event` is called-back to create the 'tapNN' macvtap
class device under the 'macvtapX' net class device.
This patch adds namespace support to the 'macvtap' device class so
that /sys/class/macvtap is no longer shared between net namespaces.
However, making the macvtap sysfs class namespace-aware has the side
effect of changing /sys/devices/virtual/net/macvtapX/tapNN into
/sys/devices/virtual/net/macvtapX/macvtap/tapNN.
This is due to Commit 24b1442 ("Driver-core: Always create class
directories for classses that support namespaces") and the fact that
class devices supporting namespaces are really not supposed to be placed
directly under other class devices.
To avoid breaking userland, a tapNN symlink pointing to macvtap/tapNN is
created inside the macvtapX directory.
Signed-off-by: Marc Angel <marc@arista.com>
---
drivers/net/macvtap.c | 36 ++++++++++++++++++++++++++----------
1 file changed, 26 insertions(+), 10 deletions(-)
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 95394ed..d89820f 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -129,7 +129,18 @@ static DEFINE_MUTEX(minor_lock);
static DEFINE_IDR(minor_idr);
#define GOODCOPY_LEN 128
-static struct class *macvtap_class;
+static const void *macvtap_net_namespace(struct device *d)
+{
+ struct net_device *dev = to_net_dev(d->parent);
+ return dev_net(dev);
+}
+
+static struct class macvtap_class = {
+ .name = "macvtap",
+ .owner = THIS_MODULE,
+ .ns_type = &net_ns_type_operations,
+ .namespace = macvtap_net_namespace,
+};
static struct cdev macvtap_cdev;
static const struct proto_ops macvtap_socket_ops;
@@ -1278,10 +1289,12 @@ static int macvtap_device_event(struct notifier_block *unused,
struct device *classdev;
dev_t devt;
int err;
+ char tap_name[IFNAMSIZ];
if (dev->rtnl_link_ops != &macvtap_link_ops)
return NOTIFY_DONE;
+ snprintf(tap_name, IFNAMSIZ, "tap%d", dev->ifindex);
vlan = netdev_priv(dev);
switch (event) {
@@ -1295,16 +1308,21 @@ static int macvtap_device_event(struct notifier_block *unused,
return notifier_from_errno(err);
devt = MKDEV(MAJOR(macvtap_major), vlan->minor);
- classdev = device_create(macvtap_class, &dev->dev, devt,
- dev, "tap%d", dev->ifindex);
+ classdev = device_create(&macvtap_class, &dev->dev, devt,
+ dev, tap_name);
if (IS_ERR(classdev)) {
macvtap_free_minor(vlan);
return notifier_from_errno(PTR_ERR(classdev));
}
+ err = sysfs_create_link(&dev->dev.kobj, &classdev->kobj,
+ tap_name);
+ if (err)
+ return notifier_from_errno(err);
break;
case NETDEV_UNREGISTER:
+ sysfs_remove_link(&dev->dev.kobj, tap_name);
devt = MKDEV(MAJOR(macvtap_major), vlan->minor);
- device_destroy(macvtap_class, devt);
+ device_destroy(&macvtap_class, devt);
macvtap_free_minor(vlan);
break;
}
@@ -1330,11 +1348,9 @@ static int macvtap_init(void)
if (err)
goto out2;
- macvtap_class = class_create(THIS_MODULE, "macvtap");
- if (IS_ERR(macvtap_class)) {
- err = PTR_ERR(macvtap_class);
+ err = class_register(&macvtap_class);
+ if (err)
goto out3;
- }
err = register_netdevice_notifier(&macvtap_notifier_block);
if (err)
@@ -1349,7 +1365,7 @@ static int macvtap_init(void)
out5:
unregister_netdevice_notifier(&macvtap_notifier_block);
out4:
- class_unregister(macvtap_class);
+ class_unregister(&macvtap_class);
out3:
cdev_del(&macvtap_cdev);
out2:
@@ -1363,7 +1379,7 @@ static void macvtap_exit(void)
{
rtnl_link_unregister(&macvtap_link_ops);
unregister_netdevice_notifier(&macvtap_notifier_block);
- class_unregister(macvtap_class);
+ class_unregister(&macvtap_class);
cdev_del(&macvtap_cdev);
unregister_chrdev_region(macvtap_major, MACVTAP_NUM_DEVS);
idr_destroy(&minor_idr);
--
2.8.0
^ permalink raw reply related
* Re: [PATCH net-next v2] macvtap: add namespace support to the sysfs device class
From: Marc Angel @ 2016-05-05 0:33 UTC (permalink / raw)
To: David Miller; +Cc: netdev, Eric W. Biederman
In-Reply-To: <20160504.160445.640444073175153113.davem@davemloft.net>
On Wed, May 4, 2016 at 9:04 PM, David Miller <davem@davemloft.net> wrote:
> From: Marc Angel <marc@arista.com>
> Date: Tue, 3 May 2016 20:30:54 +0200
>
>> @@ -1274,6 +1285,7 @@ static int macvtap_device_event(struct notifier_block *unused,
>> unsigned long event, void *ptr)
>> {
>> struct net_device *dev = netdev_notifier_info_to_dev(ptr);
>> + const char *tap_name = kasprintf(GFP_KERNEL, "tap%d", dev->ifindex);
>> struct macvlan_dev *vlan;
>> struct device *classdev;
>> dev_t devt;
>
> This 'tap_name' buffer seems to be leaked in several code paths.
Sorry about that... V3 should be better.
^ permalink raw reply
* linux-next: manual merge of the net-next tree with the net tree
From: Stephen Rothwell @ 2016-05-05 0:30 UTC (permalink / raw)
To: David Miller, netdev
Cc: linux-next, linux-kernel, Kangjie Lu, Nicolas Dichtel
Hi all,
Today's linux-next merge of the net-next tree got a conflict in:
net/core/rtnetlink.c
between commit:
5f8e44741f9f ("net: fix infoleak in rtnetlink")
from the net tree and commit:
270cb4d05b29 ("rtnl: align nlattr properly when needed")
from the net-next tree.
I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.
--
Cheers,
Stephen Rothwell
diff --cc net/core/rtnetlink.c
index 65763c29f845,d471f097c739..000000000000
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@@ -1180,17 -1173,15 +1173,17 @@@ static noinline_for_stack int rtnl_fill
static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)
{
- struct rtnl_link_ifmap map = {
- .mem_start = dev->mem_start,
- .mem_end = dev->mem_end,
- .base_addr = dev->base_addr,
- .irq = dev->irq,
- .dma = dev->dma,
- .port = dev->if_port,
- };
+ struct rtnl_link_ifmap map;
+
+ memset(&map, 0, sizeof(map));
+ map.mem_start = dev->mem_start;
+ map.mem_end = dev->mem_end;
+ map.base_addr = dev->base_addr;
+ map.irq = dev->irq;
+ map.dma = dev->dma;
+ map.port = dev->if_port;
+
- if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
+ if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD))
return -EMSGSIZE;
return 0;
^ permalink raw reply
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