The sender obviously did not write the comments in this code, as they are perfect English. This appears to be a modified portion of the Linux kernel - see: http://lxr.free-electrons.com/source/net/core/dev.c On Mon, Feb 11, 2013 at 7:15 AM, Stephen Checkoway <s@pahtak.org> wrote:
Why are you just emailing code to the list? Do you have a question?
On Feb 11, 2013, at 3:52 AM, Kenichi Mori <happyharmonic@yahoo.com> wrote:
Hi folks this my code is very exedent very sorry much thanks for read me please
// // dev_2.0.c // // // Created by Mac User on 13/02/11. // //
#include <stdio.h> /** * __xev_get_by_name - find a device by its name * @name: name to find * * Find an interface by name. Must be called under RTNL semaphore * or @dev_base_lock. If the name is found a pointer to the device * is returned. If the name is not found then %NULL is returned. The * reference counters are not incremented so the caller must be * careful with locks. */
struct net_xevice *__xev_get_by_name(const char *name) { struct hlist_node *p;
hlist_for_each(p, xev_name_hash(name)) { struct net_device *xev = hlist_entry(p, struct net_device, name_hlist); if (!strncmp(dev->name, name, IFNAMSIZ)) return xev; } return NULL; }
/** * xev_get_by_name - find a device by its name * @name: name to find * * Find an interface by name. This can be called from any * context and does its own locking. The returned handle has * the usage count incremented and the caller must use dev_put() to * release it when it is no longer needed. %NULL is returned if no * matching device is found. */
struct net_device *xev_get_by_name(const char *name) { struct net_device *xev;
read_lock(&xev_base_lock); xev = __xev_get_by_name(name); if (xev) xev_hold(xev); read_unlock(&xev_base_lock); return xev; }
/** * __xev_get_by_index - find a device by its ifindex * @ifindex: index of device * * Search for an interface by index. Returns %NULL if the device * is not found or a pointer to the device. The device has not * had its reference counter increased so the caller must be careful * about locking. The caller must hold either the RTNL semaphore * or @dev_base_lock. */
struct net_device *__xev_get_by_index(int ifindex) { struct hlist_node *p;
hlist_for_each(p, xev_index_hash(ifindex)) { struct net_device *xev = hlist_entry(p, struct net_device, index_hlist); if (dev->ifindex == ifindex) return xev; } return NULL; }
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