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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:55:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:55:01 -0800
commitd7fc02c7bae7b1cf69269992cf880a43a350cdaa (patch)
treea43d56fa72913a1cc98a0bbebe054d08581b3a7c /net/netlink/genetlink.c
parentee1262dbc65ce0b6234a915d8432171e8d77f518 (diff)
parent28b4d5cc17c20786848cdc07b7ea237a309776bb (diff)
downloadop-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.zip
op-kernel-dev-d7fc02c7bae7b1cf69269992cf880a43a350cdaa.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1815 commits) mac80211: fix reorder buffer release iwmc3200wifi: Enable wimax core through module parameter iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter iwmc3200wifi: Coex table command does not expect a response iwmc3200wifi: Update wiwi priority table iwlwifi: driver version track kernel version iwlwifi: indicate uCode type when fail dump error/event log iwl3945: remove duplicated event logging code b43: fix two warnings ipw2100: fix rebooting hang with driver loaded cfg80211: indent regulatory messages with spaces iwmc3200wifi: fix NULL pointer dereference in pmkid update mac80211: Fix TX status reporting for injected data frames ath9k: enable 2GHz band only if the device supports it airo: Fix integer overflow warning rt2x00: Fix padding bug on L2PAD devices. WE: Fix set events not propagated b43legacy: avoid PPC fault during resume b43: avoid PPC fault during resume tcp: fix a timewait refcnt race ... Fix up conflicts due to sysctl cleanups (dead sysctl_check code and CTL_UNNUMBERED removed) in kernel/sysctl_check.c net/ipv4/sysctl_net_ipv4.c net/ipv6/addrconf.c net/sctp/sysctl.c
Diffstat (limited to 'net/netlink/genetlink.c')
-rw-r--r--net/netlink/genetlink.c32
1 files changed, 11 insertions, 21 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 44ff3f3..d07ecda 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -97,25 +97,17 @@ static struct genl_ops *genl_get_cmd(u8 cmd, struct genl_family *family)
*/
static inline u16 genl_generate_id(void)
{
- static u16 id_gen_idx;
- int overflowed = 0;
+ static u16 id_gen_idx = GENL_MIN_ID;
+ int i;
- do {
- if (id_gen_idx == 0)
+ for (i = 0; i <= GENL_MAX_ID - GENL_MIN_ID; i++) {
+ if (!genl_family_find_byid(id_gen_idx))
+ return id_gen_idx;
+ if (++id_gen_idx > GENL_MAX_ID)
id_gen_idx = GENL_MIN_ID;
+ }
- if (++id_gen_idx > GENL_MAX_ID) {
- if (!overflowed) {
- overflowed = 1;
- id_gen_idx = 0;
- continue;
- } else
- return 0;
- }
-
- } while (genl_family_find_byid(id_gen_idx));
-
- return id_gen_idx;
+ return 0;
}
static struct genl_multicast_group notify_grp;
@@ -374,11 +366,6 @@ int genl_register_family(struct genl_family *family)
goto errout_locked;
}
- if (genl_family_find_byid(family->id)) {
- err = -EEXIST;
- goto errout_locked;
- }
-
if (family->id == GENL_ID_GENERATE) {
u16 newid = genl_generate_id();
@@ -388,6 +375,9 @@ int genl_register_family(struct genl_family *family)
}
family->id = newid;
+ } else if (genl_family_find_byid(family->id)) {
+ err = -EEXIST;
+ goto errout_locked;
}
if (family->maxattr) {
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