linux/drivers/net/loopback.c, branch v2.6.19

[NET]: Can use __get_cpu_var() instead of per_cpu() in loopback driver.

2006-10-20T07:32:41Z

As BHs are off in loopback_xmit(), preemption cannot occurs, so we can use __get_cpu_var() instead of per_cpu() (and avoid a preempt_enable()/preempt_disable() pair) Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

[NET]: reduce per cpu ram used for loopback stats

2006-10-19T03:51:57Z

We dont need a full struct net_device_stats (currently 23 long : 184 bytes on x86_64) per possible CPU, but only two counters : bytes and packets We save few CPU cycles too in loopback_xmit() not updating 4 fields, but 2. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

[NET] loopback: minor statistics optimization

2006-09-29T01:02:49Z

The loopback device status structure is a singleton and doesn't need to be allocated. Add ethtool_ops hooks to show checksum always on, and make ethtool_ops const. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

drivers/net: const-ify ethtool_ops declarations

2006-09-13T18:30:00Z

Signed-off-by: Jeff Garzik

drivers/net: Trim trailing whitespace

2006-09-13T17:24:59Z

Signed-off-by: Jeff Garzik

[NET] gso: Add skb_is_gso

2006-07-08T20:34:32Z

This patch adds the wrapper function skb_is_gso which can be used instead of directly testing skb_shinfo(skb)->gso_size. This makes things a little nicer and allows us to change the primary key for indicating whether an skb is GSO (if we ever want to do that). Signed-off-by: Herbert Xu Signed-off-by: David S. Miller

[NET]: Merge TSO/UFO fields in sk_buff

2006-06-23T09:07:29Z

Having separate fields in sk_buff for TSO/UFO (tso_size/ufo_size) is not going to scale if we add any more segmentation methods (e.g., DCCP). So let's merge them. They were used to tell the protocol of a packet. This function has been subsumed by the new gso_type field. This is essentially a set of netdev feature bits (shifted by 16 bits) that are required to process a specific skb. As such it's easy to tell whether a given device can process a GSO skb: you just have to and the gso_type field and the netdev's features field. I've made gso_type a conjunction. The idea is that you have a base type (e.g., SKB_GSO_TCPV4) that can be modified further to support new features. For example, if we add a hardware TSO type that supports ECN, they would declare NETIF_F_TSO | NETIF_F_TSO_ECN. All TSO packets with CWR set would have a gso_type of SKB_GSO_TCPV4 | SKB_GSO_TCPV4_ECN while all other TSO packets would be SKB_GSO_TCPV4. This means that only the CWR packets need to be emulated in software. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller

[PATCH] for_each_possible_cpu: loopback device.

2006-03-28T17:16:05Z

This patch replaces for_each_cpu with for_each_possible_cpu. Signed-off-by: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] more for_each_cpu() conversions

2006-03-23T15:38:17Z

When we stop allocating percpu memory for not-possible CPUs we must not touch the percpu data for not-possible CPUs at all. The correct way of doing this is to test cpu_possible() or to use for_each_cpu(). This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very few instances of this bug, if any. But the patch converts lots of open-coded test to use the preferred helper macros. Cc: Mikael Starvik Cc: David Howells Acked-by: Kyle McMartin Cc: Anton Blanchard Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Paul Mundt Cc: "David S. Miller" Cc: William Lee Irwin III Cc: Andi Kleen Cc: Christian Zankel Cc: Philippe Elie Cc: Nathan Scott Cc: Jens Axboe Cc: Eric Dumazet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge /spare/repo/linux-2.6/

2005-08-19T02:14:39Z