diff options
Diffstat (limited to 'netlink/netlink.h')
| -rw-r--r-- | netlink/netlink.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/netlink/netlink.h b/netlink/netlink.h new file mode 100644 index 0000000..1274a3b --- /dev/null +++ b/netlink/netlink.h @@ -0,0 +1,178 @@ +/* + * netlink.h - common interface for all netlink code + * + * Declarations of data structures, global data and helpers for netlink code + */ + +#ifndef ETHTOOL_NETLINK_INT_H__ +#define ETHTOOL_NETLINK_INT_H__ + +#include <libmnl/libmnl.h> +#include <linux/netlink.h> +#include <linux/genetlink.h> +#include <linux/ethtool_netlink.h> +#include "nlsock.h" + +#define WILDCARD_DEVNAME "*" +#define CMDMASK_WORDS DIV_ROUND_UP(__ETHTOOL_MSG_KERNEL_CNT, 32) + +enum link_mode_class { + LM_CLASS_UNKNOWN, + LM_CLASS_REAL, + LM_CLASS_AUTONEG, + LM_CLASS_PORT, + LM_CLASS_PAUSE, + LM_CLASS_FEC, +}; + +struct nl_op_info { + uint32_t op_flags; + uint32_t hdr_flags; + uint8_t hdr_policy_loaded:1; +}; + +struct nl_context { + struct cmd_context *ctx; + void *cmd_private; + const char *devname; + bool is_dump; + int exit_code; + unsigned int suppress_nlerr; + uint16_t ethnl_fam; + uint32_t ethnl_mongrp; + struct nl_op_info *ops_info; + struct nl_socket *ethnl_socket; + struct nl_socket *ethnl2_socket; + struct nl_socket *rtnl_socket; + bool is_monitor; + uint32_t filter_cmds[CMDMASK_WORDS]; + const char *filter_devname; + bool no_banner; + const char *cmd; + const char *param; + char **argp; + unsigned int argc; + bool ioctl_fallback; + bool wildcard_unsupported; +}; + +struct attr_tb_info { + const struct nlattr **tb; + unsigned int max_type; +}; + +#define DECLARE_ATTR_TB_INFO(tbl) \ + struct attr_tb_info tbl ## _info = { (tbl), (MNL_ARRAY_SIZE(tbl) - 1) } + +int nomsg_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int attr_cb(const struct nlattr *attr, void *data); + +int netlink_init(struct cmd_context *ctx); +bool netlink_cmd_check(struct cmd_context *ctx, unsigned int cmd, + bool allow_wildcard); +const char *get_dev_name(const struct nlattr *nest); +int get_dev_info(const struct nlattr *nest, int *ifindex, char *ifname); +u32 get_stats_flag(struct nl_context *nlctx, unsigned int nlcmd, + unsigned int hdrattr); + +int linkmodes_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int linkinfo_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int wol_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int debug_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int features_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int privflags_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int rings_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int channels_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int coalesce_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int pause_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int eee_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int cable_test_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int cable_test_ntf_cb(const struct nlmsghdr *nlhdr, void *data); +int cable_test_tdr_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int cable_test_tdr_ntf_cb(const struct nlmsghdr *nlhdr, void *data); +int fec_reply_cb(const struct nlmsghdr *nlhdr, void *data); +int module_reply_cb(const struct nlmsghdr *nlhdr, void *data); + +/* dump helpers */ + +int dump_link_modes(struct nl_context *nlctx, const struct nlattr *bitset, + bool mask, unsigned int class, const char *before, + const char *between, const char *after, + const char *if_none); + +static inline void show_u32(const char *key, + const char *fmt, + const struct nlattr *attr) +{ + if (is_json_context()) { + if (attr) + print_uint(PRINT_JSON, key, NULL, + mnl_attr_get_u32(attr)); + } else { + if (attr) + printf("%s%u\n", fmt, mnl_attr_get_u32(attr)); + else + printf("%sn/a\n", fmt); + } +} + +static inline const char *u8_to_bool(const uint8_t *val) +{ + if (val) + return *val ? "on" : "off"; + else + return "n/a"; +} + +static inline void show_bool_val(const char *key, const char *fmt, uint8_t *val) +{ + if (is_json_context()) { + if (val) + print_bool(PRINT_JSON, key, NULL, *val); + } else { + print_string(PRINT_FP, NULL, fmt, u8_to_bool(val)); + } +} + +static inline void show_bool(const char *key, const char *fmt, + const struct nlattr *attr) +{ + show_bool_val(key, fmt, attr ? mnl_attr_get_payload(attr) : NULL); +} + +static inline void show_cr(void) +{ + if (!is_json_context()) + putchar('\n'); +} + +/* misc */ + +static inline void copy_devname(char *dst, const char *src) +{ + strncpy(dst, src, ALTIFNAMSIZ); + dst[ALTIFNAMSIZ - 1] = '\0'; +} + +static inline bool dev_ok(const struct nl_context *nlctx) +{ + return !nlctx->filter_devname || + (nlctx->devname && + !strcmp(nlctx->devname, nlctx->filter_devname)); +} + +static inline int netlink_init_ethnl2_socket(struct nl_context *nlctx) +{ + if (nlctx->ethnl2_socket) + return 0; + return nlsock_init(nlctx, &nlctx->ethnl2_socket, NETLINK_GENERIC); +} + +static inline int netlink_init_rtnl_socket(struct nl_context *nlctx) +{ + if (nlctx->rtnl_socket) + return 0; + return nlsock_init(nlctx, &nlctx->rtnl_socket, NETLINK_ROUTE); +} + +#endif /* ETHTOOL_NETLINK_INT_H__ */ |