lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <1393949476.26794.118.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 04 Mar 2014 08:11:16 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Hayes Wang <hayeswang@...ltek.com>
Cc:	netdev@...r.kernel.org, nic_swsd@...ltek.com,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH net-next 08/12] r8152: support TSO

On Tue, 2014-03-04 at 20:01 +0800, Hayes Wang wrote:

> +static u32 r8152_xmit_frags(struct r8152 *tp, struct sk_buff *skb, u8 *data)
> +{
> +	struct skb_shared_info *info = skb_shinfo(skb);
> +	unsigned int cur_frag;
> +	u32 total = skb_headlen(skb);
> +
> +	memcpy(data, skb->data, total);
> +	data += total;
> +
> +	for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
> +		const skb_frag_t *frag = info->frags + cur_frag;
> +		void *addr;
> +		u32 len;
> +
> +		len = skb_frag_size(frag);
> +		addr = skb_frag_address(frag);
> +		memcpy(data, addr, len);
> +		data += len;
> +		total += len;
>  	}
> +
> +	return total;
>  }
>  

I would rather use skb_copy_bits(), because it correctly handles
kmap() case. (If a frag resides in high memory)



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ