From: Felix Manlunas <felix.manlunas@cavium.com>
To: David Miller <davem@davemloft.net>
Cc: <netdev@vger.kernel.org>, <raghu.vatsavayi@cavium.com>,
<derek.chickles@cavium.com>, <satananda.burla@cavium.com>
Subject: Re: [PATCH net-next] liquidio: store the L4 hash of rx packets in skb
Date: Mon, 9 Jan 2017 10:45:05 -0800 [thread overview]
Message-ID: <20170109184505.GA8756@felix.cavium.com> (raw)
In-Reply-To: <20170108.170941.1437038681712014840.davem@davemloft.net>
David Miller <davem@davemloft.net> wrote on Sun [2017-Jan-08 17:09:41 -0500]:
> From: Felix Manlunas <felix.manlunas@cavium.com>
> Date: Fri, 6 Jan 2017 16:55:42 -0800
>
> >
> > + if (rh->r_dh.has_hash) {
> > + u32 hash = be32_to_cpu(*(u32 *)(skb->data + r_dh_off));
>
> Is the checksum defined to be in the first 4-bytes of the 8-byte DHLEN unit,
> or the second 4-bytes? Is the answer to this question endian-dependent?
The hash is always in the first 4-bytes. The location of the hash is endian
independent. The hash itself (in its original form) is big endian.
next prev parent reply other threads:[~2017-01-09 18:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-07 0:55 [PATCH net-next] liquidio: store the L4 hash of rx packets in skb Felix Manlunas
2017-01-08 22:09 ` David Miller
2017-01-09 18:45 ` Felix Manlunas [this message]
2017-01-09 18:56 ` David Miller
2017-01-09 18:59 ` Felix Manlunas
2017-01-09 18:51 ` Eric Dumazet
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