diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2022-10-27 15:37:56 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-27 16:56:36 -0700 |
| commit | 31f1aa4f740fc591450777f4ff94d6e062b6f632 (patch) | |
| tree | b6bfe700d8338b3c88f4d8413b624d0d5fd78e4a /net/netlink | |
| parent | 12d6c1d3a2ad0c199ec57c201cdc71e8e157a232 (diff) | |
| parent | 23758867219c8d84c8363316e6dd2f9fd7ae3049 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
2871edb32f46 ("can: kvaser_usb: Fix possible completions during init_completion")
abb8670938b2 ("can: kvaser_usb_leaf: Ignore stale bus-off after start")
8d21f5927ae6 ("can: kvaser_usb_leaf: Fix improved state not being reported")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 39b7c00e4cef..3e16527beb91 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -78,10 +78,29 @@ static unsigned long mc_group_start = 0x3 | BIT(GENL_ID_CTRL) | static unsigned long *mc_groups = &mc_group_start; static unsigned long mc_groups_longs = 1; +/* We need the last attribute with non-zero ID therefore a 2-entry array */ +static struct nla_policy genl_policy_reject_all[] = { + { .type = NLA_REJECT }, + { .type = NLA_REJECT }, +}; + static int genl_ctrl_event(int event, const struct genl_family *family, const struct genl_multicast_group *grp, int grp_id); +static void +genl_op_fill_in_reject_policy(const struct genl_family *family, + struct genl_ops *op) +{ + BUILD_BUG_ON(ARRAY_SIZE(genl_policy_reject_all) - 1 != 1); + + if (op->policy || op->cmd < family->resv_start_op) + return; + + op->policy = genl_policy_reject_all; + op->maxattr = 1; +} + static const struct genl_family *genl_family_find_byid(unsigned int id) { return idr_find(&genl_fam_idr, id); @@ -113,6 +132,8 @@ static void genl_op_from_full(const struct genl_family *family, op->maxattr = family->maxattr; if (!op->policy) op->policy = family->policy; + + genl_op_fill_in_reject_policy(family, op); } static int genl_get_cmd_full(u32 cmd, const struct genl_family *family, @@ -142,6 +163,8 @@ static void genl_op_from_small(const struct genl_family *family, op->maxattr = family->maxattr; op->policy = family->policy; + + genl_op_fill_in_reject_policy(family, op); } static int genl_get_cmd_small(u32 cmd, const struct genl_family *family, @@ -357,6 +380,8 @@ static int genl_validate_ops(const struct genl_family *family) genl_get_cmd_by_index(i, family, &op); if (op.dumpit == NULL && op.doit == NULL) return -EINVAL; + if (WARN_ON(op.cmd >= family->resv_start_op && op.validate)) + return -EINVAL; for (j = i + 1; j < genl_get_cmd_cnt(family); j++) { struct genl_ops op2; |