diff options
Diffstat (limited to 'include/linux/netlink.h')
| -rw-r--r-- | include/linux/netlink.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 60e7137f840d..8d2a8924705c 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -62,15 +62,22 @@ netlink_kernel_create(struct net *net, int unit, struct netlink_kernel_cfg *cfg) return __netlink_kernel_create(net, unit, THIS_MODULE, cfg); } +/* this can be increased when necessary - don't expose to userland */ +#define NETLINK_MAX_COOKIE_LEN 20 + /** * struct netlink_ext_ack - netlink extended ACK report struct * @_msg: message string to report - don't access directly, use * %NL_SET_ERR_MSG * @bad_attr: attribute with error + * @cookie: cookie data to return to userspace (for success) + * @cookie_len: actual cookie data length */ struct netlink_ext_ack { const char *_msg; const struct nlattr *bad_attr; + u8 cookie[NETLINK_MAX_COOKIE_LEN]; + u8 cookie_len; }; /* Always use this macro, this allows later putting the |