From: Peter Teoh <htmldeveloper@gmail.com>
To: Jon Zhou <Jon.Zhou@jdsu.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"kernelnewbies@kernelnewbies.org"
<kernelnewbies@kernelnewbies.org>
Subject: Re: CPU instruction to calculate tcp checksum and udp integrity?
Date: Thu, 26 May 2011 10:57:28 +0800 [thread overview]
Message-ID: <BANLkTimtRFFNWthCN1ziLtuNvFYAi0WHGg@mail.gmail.com> (raw)
In-Reply-To: <4A6A2125329CFD4D8CC40C9E8ABCAB9F250D8894E6@MILEXCH2.ds.jdsu.net>
In net/ipv4/tcp_ipv4.c:
/* This routine computes an IPv4 TCP checksum. */
void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
{
struct inet_sock *inet = inet_sk(sk);
__tcp_v4_send_check(skb, inet->inet_saddr, inet->inet_daddr);
}
EXPORT_SYMBOL(tcp_v4_send_check);
On Mon, May 23, 2011 at 11:26 PM, Jon Zhou <Jon.Zhou@jdsu.com> wrote:
> hi
> now I am using sw to calculate the tcp checksum, is there CPU(nehalem)
> instruction or NIC /kernel API to do such thing?
>
> thanks a lot
> jon
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies@kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>
--
Regards,
Peter Teoh
prev parent reply other threads:[~2011-05-26 2:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 15:26 CPU instruction to calculate tcp checksum and udp integrity? Jon Zhou
2011-05-26 2:57 ` Peter Teoh [this message]
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