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genetlink: mark families as __ro_after_init

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Johannes Berg 2016-10-24 14:40:05 +02:00 • committed by David S. Miller
commit 56989f6d85
35 changed files with 51 additions and 51 deletions
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2
net/ieee802154/netlink.c
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@ -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,

4
net/ieee802154/nl802154.c
View file

@ -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);
}