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authorJohannes Berg <johannes.berg@intel.com>2016-10-24 14:40:05 +0200
committerDavid S. Miller <davem@davemloft.net>2016-10-27 16:16:09 -0400
commit56989f6d8568c21257dcec0f5e644d5570ba3281 (patch)
tree60a6b44865e68e25dbc8bcc38d0000e12106f2d8 /net/ieee802154
parent2ae0f17df1cd52aafd1ab0415ea1f1dd56dc0e2a (diff)
downloadlinux-56989f6d8568c21257dcec0f5e644d5570ba3281.tar.bz2
genetlink: mark families as __ro_after_init
Now genl_register_family() is the only thing (other than the users themselves, perhaps, but I didn't find any doing that) writing to the family struct. In all families that I found, genl_register_family() is only called from __init functions (some indirectly, in which case I've add __init annotations to clarifly things), so all can actually be marked __ro_after_init. This protects the data structure from accidental corruption. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/netlink.c2
-rw-r--r--net/ieee802154/nl802154.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
index 08e62470bac2..6bde9e5a5503 100644
--- a/net/ieee802154/netlink.c
+++ b/net/ieee802154/netlink.c
@@ -131,7 +131,7 @@ static const struct genl_multicast_group ieee802154_mcgrps[] = {
[IEEE802154_BEACON_MCGRP] = { .name = IEEE802154_MCAST_BEACON_NAME, },
};
-struct genl_family nl802154_family = {
+struct genl_family nl802154_family __ro_after_init = {
.hdrsize = 0,
.name = IEEE802154_NL_NAME,
.version = 1,
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index f7e75578aedd..fc60cd061f39 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -2462,7 +2462,7 @@ static const struct genl_ops nl802154_ops[] = {
#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
};
-static struct genl_family nl802154_fam = {
+static struct genl_family nl802154_fam __ro_after_init = {
.name = NL802154_GENL_NAME, /* have users key off the name instead */
.hdrsize = 0, /* no private header */
.version = 1, /* no particular meaning now */
@@ -2478,7 +2478,7 @@ static struct genl_family nl802154_fam = {
};
/* initialisation/exit functions */
-int nl802154_init(void)
+int __init nl802154_init(void)
{
return genl_register_family(&nl802154_fam);
}