diff options
Diffstat (limited to 'examples/rtnl-link-dump.c')
| -rw-r--r-- | examples/rtnl-link-dump.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/examples/rtnl-link-dump.c b/examples/rtnl-link-dump.c index 7cf061d..9e3f114 100644 --- a/examples/rtnl-link-dump.c +++ b/examples/rtnl-link-dump.c @@ -7,9 +7,37 @@ #include <linux/if_link.h> #include <linux/rtnetlink.h> +static int data_attr_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = (const struct nlattr **)data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_invalid(attr, IFLA_MAX) < 0) { + perror("mnl_attr_type_invalid"); + return MNL_CB_ERROR; + } + + switch(type) { + case IFLA_MTU: + if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case IFLA_IFNAME: + if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) { + perror("mnl_attr_validate2"); + return MNL_CB_ERROR; + } + break; + } + tb[type] = attr; + return MNL_CB_OK; +} + static int data_cb(const struct nlmsghdr *nlh, void *data) { - struct nlattr *tb[IFLA_MAX+1]; + struct nlattr *tb[IFLA_MAX+1] = {}; struct ifinfomsg *ifm = mnl_nlmsg_get_data(nlh); int len = mnl_nlmsg_get_len(nlh); struct nlattr *attr; @@ -23,7 +51,7 @@ static int data_cb(const struct nlmsghdr *nlh, void *data) else printf("[NOT RUNNING] "); - mnl_attr_parse_at_offset(nlh, sizeof(*ifm), tb, IFLA_MAX); + mnl_attr_parse(nlh, sizeof(*ifm), data_attr_cb, tb); if (tb[IFLA_MTU]) { printf("mtu=%d ", mnl_attr_get_u32(tb[IFLA_MTU])); } |