netdev - [PATCH net-next-2.6] net: use helpers to access mc list V2

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-next>] [day] [month] [year] [list]

Date:	Wed, 3 Feb 2010 13:59:43 +0100
From:	Jiri Pirko <jpirko@...hat.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net
Subject: [PATCH net-next-2.6] net: use helpers to access mc list V2

This patch introduces the similar helpers as those already done for uc list.
However multicast lists are no list_head lists but "mademanually". The three
macros added by this patch will make the transition of mc_list to list_head
smooth in two steps:

1) convert all drivers to use these macros (with the original iterator of type
   "struct dev_mc_list")
2) once all drivers are converted, convert list type and iterators to "struct
   netdev_hw_addr" in one patch.

>From now on, drivers can (and should) use "netdev_for_each_mc_addr" to iterate
over the addresses with iterator of type "struct netdev_hw_addr". Also macros
"netdev_mc_count" and "netdev_mc_empty" to read list's length. This is the state
which should be reached in all drivers.

Signed-off-by: Jiri Pirko <jpirko@...hat.com>
---
 include/linux/netdevice.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 93a32a5..3f1c4a8 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -268,6 +268,12 @@ struct netdev_hw_addr_list {
 #define netdev_for_each_uc_addr(ha, dev) \
 	list_for_each_entry(ha, &dev->uc.list, list)
 
+#define netdev_mc_count(dev) ((dev)->mc_count)
+#define netdev_mc_empty(dev) (netdev_mc_count(dev) == 0)
+
+#define netdev_for_each_mc_addr(mclist, dev) \
+	for (mclist = dev->mc_list; mclist; mclist = mclist->next)
+
 struct hh_cache {
 	struct hh_cache *hh_next;	/* Next entry			     */
 	atomic_t	hh_refcnt;	/* number of users                   */
-- 
1.6.6

--
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