diff options
Diffstat (limited to 'tools/testing/selftests/bpf/netlink_helpers.h')
| -rw-r--r-- | tools/testing/selftests/bpf/netlink_helpers.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/netlink_helpers.h b/tools/testing/selftests/bpf/netlink_helpers.h new file mode 100644 index 000000000000..68116818a47e --- /dev/null +++ b/tools/testing/selftests/bpf/netlink_helpers.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef NETLINK_HELPERS_H +#define NETLINK_HELPERS_H + +#include <string.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> + +struct rtnl_handle { + int fd; + struct sockaddr_nl local; + struct sockaddr_nl peer; + __u32 seq; + __u32 dump; + int proto; + FILE *dump_fp; +#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 +#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02 +#define RTNL_HANDLE_F_STRICT_CHK 0x04 + int flags; +}; + +#define NLMSG_TAIL(nmsg) \ + ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) + +typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off, + const struct nlmsghdr *inner_nlh); + +int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions) + __attribute__((warn_unused_result)); +void rtnl_close(struct rtnl_handle *rth); +int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, + struct nlmsghdr **answer) + __attribute__((warn_unused_result)); + +int addattr(struct nlmsghdr *n, int maxlen, int type); +int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); +int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); +int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); +int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); +int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); +int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); +int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); +struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); +int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); +#endif /* NETLINK_HELPERS_H */ |