From: Heiner Kallweit <hkallweit1@gmail.com>
To: David Miller <davem@davemloft.net>,
Realtek linux nic maintainers <nic_swsd@realtek.com>,
Jay Cliburn <jcliburn@gmail.com>,
Chris Snook <chris.snook@gmail.com>,
Rasesh Mody <rmody@marvell.com>,
Sudarsana Kalluru <skalluru@marvell.com>,
GR-Linux-NIC-Dev@marvell.com,
Christian Benvenuti <benve@cisco.com>,
Govindarajulu Varadarajan <_govind@gmx.com>,
Parvi Kaustubhi <pkaustub@cisco.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>,
Guo-Fu Tseng <cooldavid@cooldavid.org>,
Shannon Nelson <snelson@pensando.io>,
Pensando Drivers <drivers@pensando.io>,
Timur Tabi <timur@kernel.org>,
Jassi Brar <jaswinder.singh@linaro.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Sasha Levin <sashal@kernel.org>, Ronak Doshi <doshir@vmware.com>,
"VMware, Inc." <pv-drivers@vmware.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
intel-wired-lan@lists.osuosl.org, linux-hyperv@vger.kernel.org,
Linux USB Mailing List <linux-usb@vger.kernel.org>
Subject: [PATCH net-next v2 01/13] net: core: add helper tcp_v6_gso_csum_prep
Date: Tue, 18 Feb 2020 20:56:41 +0100 [thread overview]
Message-ID: <82ba1653-6a88-edf2-b22f-938b64e46655@gmail.com> (raw)
In-Reply-To: <fffc8b6d-68ed-7501-18f1-94cf548821fb@gmail.com>
Several network drivers for chips that support TSO6 share the same code
for preparing the TCP header, so let's factor it out to a helper.
A difference is that some drivers reset the payload_len whilst others
don't do this. This value is overwritten by TSO anyway, therefore
the new helper resets it in general.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
---
include/net/ip6_checksum.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 7bec95df4..27ec612cd 100644
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h
@@ -76,6 +76,15 @@ static inline void __tcp_v6_send_check(struct sk_buff *skb,
}
}
+static inline void tcp_v6_gso_csum_prep(struct sk_buff *skb)
+{
+ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+ struct tcphdr *th = tcp_hdr(skb);
+
+ ipv6h->payload_len = 0;
+ th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);
+}
+
#if IS_ENABLED(CONFIG_IPV6)
static inline void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
--
2.25.1
next prev parent reply other threads:[~2020-02-18 20:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 19:55 [PATCH net-next v2 0/13] net: core: add helper tcp_v6_gso_csum_prep Heiner Kallweit
2020-02-18 19:56 ` Heiner Kallweit [this message]
2020-02-18 20:11 ` [PATCH net-next v2 11/13] hv_netvsc: use new " Heiner Kallweit
2020-02-19 19:22 ` [PATCH net-next v2 0/13] net: core: add " David Miller
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