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From: Xin Long <lucien.xin@gmail.com>
To: network dev <netdev@vger.kernel.org>, linux-sctp@vger.kernel.org
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
	Neil Horman <nhorman@tuxdriver.com>,
	Michael Tuexen <tuexen@fh-muenster.de>,
	davem <davem@davemloft.net>, Tom Herbert <tom@herbertland.com>
Subject: Re: [PATCHv2 net-next 04/17] udp: support sctp over udp in skb_udp_tunnel_segment
Date: Thu, 08 Oct 2020 10:01:35 +0000	[thread overview]
Message-ID: <CADvbK_c7Ez6jzLpo5TgKL1r6ebcthU+jztw1oDP9h0xbcAx1Cg@mail.gmail.com> (raw)
In-Reply-To: <17cab00046ea7fe36c8383925a4fc3fbc028c511.1602150362.git.lucien.xin@gmail.com>

CCing Tom Herbert

On Thu, Oct 8, 2020 at 5:48 PM Xin Long <lucien.xin@gmail.com> wrote:
>
> To call sctp_gso_segment() properly in skb_udp_tunnel_segment() for sctp
> over udp packets, we need to set transport_header to sctp header. When
> skb->ip_summed = CHECKSUM_PARTIAL, skb_crc32c_csum_help() should be
> called for the inner sctp packet.
>
> Cc: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Xin Long <lucien.xin@gmail.com>
> ---
>  net/ipv4/udp_offload.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
> index c0b010b..a484405 100644
> --- a/net/ipv4/udp_offload.c
> +++ b/net/ipv4/udp_offload.c
> @@ -49,6 +49,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
>         __skb_pull(skb, tnl_hlen);
>         skb_reset_mac_header(skb);
>         skb_set_network_header(skb, skb_inner_network_offset(skb));
> +       skb_set_transport_header(skb, skb_inner_transport_offset(skb));
>         skb->mac_len = skb_inner_network_offset(skb);
>         skb->protocol = new_protocol;
>
> @@ -131,8 +132,12 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
>                 uh->check = ~csum_fold(csum_add(partial,
>                                        (__force __wsum)htonl(len)));
>
> -               if (skb->encapsulation)
> -                       skb_checksum_help(skb);
> +               if (skb->encapsulation) {
> +                       if (skb->csum_not_inet)
> +                               skb_crc32c_csum_help(skb);
> +                       else
> +                               skb_checksum_help(skb);
> +               }
>
>                 if (offload_csum) {
>                         skb->ip_summed = CHECKSUM_PARTIAL;
> --
> 2.1.0
>

WARNING: multiple messages have this Message-ID (diff)
From: Xin Long <lucien.xin@gmail.com>
To: network dev <netdev@vger.kernel.org>, linux-sctp@vger.kernel.org
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
	Neil Horman <nhorman@tuxdriver.com>,
	Michael Tuexen <tuexen@fh-muenster.de>,
	davem <davem@davemloft.net>, Tom Herbert <tom@herbertland.com>
Subject: Re: [PATCHv2 net-next 04/17] udp: support sctp over udp in skb_udp_tunnel_segment
Date: Thu, 8 Oct 2020 18:01:35 +0800	[thread overview]
Message-ID: <CADvbK_c7Ez6jzLpo5TgKL1r6ebcthU+jztw1oDP9h0xbcAx1Cg@mail.gmail.com> (raw)
Message-ID: <20201008100135.gWfJ5_2g9nt_ZKV-fnIi3wLhq2nEnaZtu9V6dElojwE@z> (raw)
In-Reply-To: <17cab00046ea7fe36c8383925a4fc3fbc028c511.1602150362.git.lucien.xin@gmail.com>

CCing Tom Herbert

On Thu, Oct 8, 2020 at 5:48 PM Xin Long <lucien.xin@gmail.com> wrote:
>
> To call sctp_gso_segment() properly in skb_udp_tunnel_segment() for sctp
> over udp packets, we need to set transport_header to sctp header. When
> skb->ip_summed == CHECKSUM_PARTIAL, skb_crc32c_csum_help() should be
> called for the inner sctp packet.
>
> Cc: Tom Herbert <tom@herbertland.com>
> Signed-off-by: Xin Long <lucien.xin@gmail.com>
> ---
>  net/ipv4/udp_offload.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
> index c0b010b..a484405 100644
> --- a/net/ipv4/udp_offload.c
> +++ b/net/ipv4/udp_offload.c
> @@ -49,6 +49,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
>         __skb_pull(skb, tnl_hlen);
>         skb_reset_mac_header(skb);
>         skb_set_network_header(skb, skb_inner_network_offset(skb));
> +       skb_set_transport_header(skb, skb_inner_transport_offset(skb));
>         skb->mac_len = skb_inner_network_offset(skb);
>         skb->protocol = new_protocol;
>
> @@ -131,8 +132,12 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
>                 uh->check = ~csum_fold(csum_add(partial,
>                                        (__force __wsum)htonl(len)));
>
> -               if (skb->encapsulation)
> -                       skb_checksum_help(skb);
> +               if (skb->encapsulation) {
> +                       if (skb->csum_not_inet)
> +                               skb_crc32c_csum_help(skb);
> +                       else
> +                               skb_checksum_help(skb);
> +               }
>
>                 if (offload_csum) {
>                         skb->ip_summed = CHECKSUM_PARTIAL;
> --
> 2.1.0
>

  parent reply	other threads:[~2020-10-08 10:01 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-08  9:47 [PATCHv2 net-next 00/17] sctp: Implement RFC6951: UDP Encapsulation of SCTP Xin Long
2020-10-08  9:47 ` Xin Long
2020-10-08  9:47 ` [PATCHv2 net-next 01/17] udp: check udp sock encap_type in __udp_lib_err Xin Long
2020-10-08  9:47   ` Xin Long
2020-10-08  9:47   ` [PATCHv2 net-next 02/17] udp6: move the mss check after udp gso tunnel processing Xin Long
2020-10-08  9:47     ` Xin Long
2020-10-08  9:47     ` [PATCHv2 net-next 03/17] udp: do checksum properly in skb_udp_tunnel_segment Xin Long
2020-10-08  9:47       ` Xin Long
2020-10-08  9:48       ` [PATCHv2 net-next 04/17] udp: support sctp over udp " Xin Long
2020-10-08  9:48         ` Xin Long
2020-10-08  9:48         ` [PATCHv2 net-next 05/17] sctp: create udp4 sock and add its encap_rcv Xin Long
2020-10-08  9:48           ` Xin Long
2020-10-08  9:48           ` [PATCHv2 net-next 06/17] sctp: create udp6 sock and set " Xin Long
2020-10-08  9:48             ` Xin Long
2020-10-08  9:48             ` [PATCHv2 net-next 07/17] sctp: add encap_err_lookup for udp encap socks Xin Long
2020-10-08  9:48               ` Xin Long
2020-10-08  9:48               ` [PATCHv2 net-next 08/17] sctp: add encap_port for netns sock asoc and transport Xin Long
2020-10-08  9:48                 ` Xin Long
2020-10-08  9:48                 ` [PATCHv2 net-next 09/17] sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt Xin Long
2020-10-08  9:48                   ` Xin Long
2020-10-08  9:48                   ` [PATCHv2 net-next 10/17] sctp: allow changing transport encap_port by peer packets Xin Long
2020-10-08  9:48                     ` Xin Long
2020-10-08  9:48                     ` [PATCHv2 net-next 11/17] sctp: add udphdr to overhead when udp_port is set Xin Long
2020-10-08  9:48                       ` Xin Long
2020-10-08  9:48                       ` [PATCHv2 net-next 12/17] sctp: call sk_setup_caps in sctp_packet_transmit instead Xin Long
2020-10-08  9:48                         ` Xin Long
2020-10-08  9:48                         ` [PATCHv2 net-next 13/17] sctp: support for sending packet over udp4 sock Xin Long
2020-10-08  9:48                           ` Xin Long
2020-10-08  9:48                           ` [PATCHv2 net-next 14/17] sctp: support for sending packet over udp6 sock Xin Long
2020-10-08  9:48                             ` Xin Long
2020-10-08  9:48                             ` [PATCHv2 net-next 15/17] sctp: add the error cause for new encapsulation port restart Xin Long
2020-10-08  9:48                               ` Xin Long
2020-10-08  9:48                               ` [PATCHv2 net-next 16/17] sctp: handle the init chunk matching an existing asoc Xin Long
2020-10-08  9:48                                 ` Xin Long
2020-10-08  9:48                                 ` [PATCHv2 net-next 17/17] sctp: enable udp tunneling socks Xin Long
2020-10-08  9:48                                   ` Xin Long
2020-10-08 15:46                                   ` kernel test robot
2020-10-08 15:46                                     ` kernel test robot
2020-10-09  2:02                                     ` Xin Long
2020-10-09  2:02                                       ` Xin Long
2020-10-08 14:33                               ` [PATCHv2 net-next 15/17] sctp: add the error cause for new encapsulation port restart kernel test robot
2020-10-08 14:33                                 ` kernel test robot
2020-10-08 13:10                   ` [PATCHv2 net-next 09/17] sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt kernel test robot
2020-10-08 13:10                     ` kernel test robot
2020-10-08 21:18             ` [PATCHv2 net-next 06/17] sctp: create udp6 sock and set its encap_rcv kernel test robot
2020-10-08 21:18               ` kernel test robot
2020-10-09  1:59               ` Xin Long
2020-10-09  1:59                 ` Xin Long
2020-10-08 18:29           ` [PATCHv2 net-next 05/17] sctp: create udp4 sock and add " kernel test robot
2020-10-08 18:29             ` kernel test robot
2020-10-09  1:59             ` Xin Long
2020-10-09  1:59               ` Xin Long
2020-10-08 10:01         ` Xin Long [this message]
2020-10-08 10:01           ` [PATCHv2 net-next 04/17] udp: support sctp over udp in skb_udp_tunnel_segment Xin Long
2020-10-08 10:01       ` [PATCHv2 net-next 03/17] udp: do checksum properly " Xin Long
2020-10-08 10:01         ` Xin Long
2020-10-08 12:44     ` [PATCHv2 net-next 02/17] udp6: move the mss check after udp gso tunnel processing Willem de Bruijn
2020-10-08 12:44       ` Willem de Bruijn
2020-10-09  1:48       ` Xin Long
2020-10-09  1:48         ` Xin Long
2020-10-09 13:59         ` Willem de Bruijn
2020-10-09 13:59           ` Willem de Bruijn

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