colin/NetworkManager
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

platform/trivial: move code (nm_rtnl_link_parse_info_data)

Browse Source
This commit is contained in:
Thomas Haller
2015-05-29 09:40:24 +02:00
parent af70a7fc7c
commit 2f0a9bbe9a
1 changed files with 84 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

166
src/platform/nm-linux-platform.c
View File

@@ -292,6 +292,90 @@ _nl_rtnl_addr_set_prefixlen (struct rtnl_addr *rtnladdr, int plen)
/******************************************************************/
/* nm_rtnl_link_parse_info_data(): Re-fetches a link from the kernel
* and parses its IFLA_INFO_DATA using a caller-provided parser.
*
* Code is stolen from rtnl_link_get_kernel(), nl_pickup(), and link_msg_parser().
*/
typedef int (*NMNLInfoDataParser) (struct nlattr *info_data, gpointer parser_data);
typedef struct {
NMNLInfoDataParser parser;
gpointer parser_data;
} NMNLInfoDataClosure;
static struct nla_policy info_data_link_policy[IFLA_MAX + 1] = {
[IFLA_LINKINFO] = { .type = NLA_NESTED },
};
static struct nla_policy info_data_link_info_policy[IFLA_INFO_MAX + 1] = {
[IFLA_INFO_DATA] = { .type = NLA_NESTED },
};
static int
info_data_parser (struct nl_msg *msg, void *arg)
{
NMNLInfoDataClosure *closure = arg;
struct nlmsghdr *n = nlmsg_hdr (msg);
struct nlattr *tb[IFLA_MAX + 1];
struct nlattr *li[IFLA_INFO_MAX + 1];
int err;
if (!nlmsg_valid_hdr (n, sizeof (struct ifinfomsg)))
return -NLE_MSG_TOOSHORT;
err = nlmsg_parse (n, sizeof (struct ifinfomsg), tb, IFLA_MAX, info_data_link_policy);
if (err < 0)
return err;
if (!tb[IFLA_LINKINFO])
return -NLE_MISSING_ATTR;
err = nla_parse_nested (li, IFLA_INFO_MAX, tb[IFLA_LINKINFO], info_data_link_info_policy);
if (err < 0)
return err;
if (!li[IFLA_INFO_DATA])
return -NLE_MISSING_ATTR;
return closure->parser (li[IFLA_INFO_DATA], closure->parser_data);
}
static int
nm_rtnl_link_parse_info_data (struct nl_sock *sk, int ifindex,
NMNLInfoDataParser parser, gpointer parser_data)
{
NMNLInfoDataClosure data = { .parser = parser, .parser_data = parser_data };
struct nl_msg *msg = NULL;
struct nl_cb *cb;
int err;
err = rtnl_link_build_get_request (ifindex, NULL, &msg);
if (err < 0)
return err;
err = nl_send_auto (sk, msg);
nlmsg_free (msg);
if (err < 0)
return err;
cb = nl_cb_clone (nl_socket_get_cb (sk));
if (cb == NULL)
return -NLE_NOMEM;
nl_cb_set (cb, NL_CB_VALID, NL_CB_CUSTOM, info_data_parser, &data);
err = nl_recvmsgs (sk, cb);
nl_cb_put (cb);
if (err < 0)
return err;
nl_wait_for_ack (sk);
return 0;
}
/******************************************************************/
static int
_nl_sock_flush_data (struct nl_sock *sk)
{
@@ -564,88 +648,6 @@ _nlo_get_object_type (const struct nl_object *object)
return OBJECT_TYPE_UNKNOWN;
}
/* nm_rtnl_link_parse_info_data(): Re-fetches a link from the kernel
* and parses its IFLA_INFO_DATA using a caller-provided parser.
*
* Code is stolen from rtnl_link_get_kernel(), nl_pickup(), and link_msg_parser().
*/
typedef int (*NMNLInfoDataParser) (struct nlattr *info_data, gpointer parser_data);
typedef struct {
NMNLInfoDataParser parser;
gpointer parser_data;
} NMNLInfoDataClosure;
static struct nla_policy info_data_link_policy[IFLA_MAX + 1] = {
[IFLA_LINKINFO] = { .type = NLA_NESTED },
};
static struct nla_policy info_data_link_info_policy[IFLA_INFO_MAX + 1] = {
[IFLA_INFO_DATA] = { .type = NLA_NESTED },
};
static int
info_data_parser (struct nl_msg *msg, void *arg)
{
NMNLInfoDataClosure *closure = arg;
struct nlmsghdr *n = nlmsg_hdr (msg);
struct nlattr *tb[IFLA_MAX + 1];
struct nlattr *li[IFLA_INFO_MAX + 1];
int err;
if (!nlmsg_valid_hdr (n, sizeof (struct ifinfomsg)))
return -NLE_MSG_TOOSHORT;
err = nlmsg_parse (n, sizeof (struct ifinfomsg), tb, IFLA_MAX, info_data_link_policy);
if (err < 0)
return err;
if (!tb[IFLA_LINKINFO])
return -NLE_MISSING_ATTR;
err = nla_parse_nested (li, IFLA_INFO_MAX, tb[IFLA_LINKINFO], info_data_link_info_policy);
if (err < 0)
return err;
if (!li[IFLA_INFO_DATA])
return -NLE_MISSING_ATTR;
return closure->parser (li[IFLA_INFO_DATA], closure->parser_data);
}
static int
nm_rtnl_link_parse_info_data (struct nl_sock *sk, int ifindex,
NMNLInfoDataParser parser, gpointer parser_data)
{
NMNLInfoDataClosure data = { .parser = parser, .parser_data = parser_data };
struct nl_msg *msg = NULL;
struct nl_cb *cb;
int err;
err = rtnl_link_build_get_request (ifindex, NULL, &msg);
if (err < 0)
return err;
err = nl_send_auto (sk, msg);
nlmsg_free (msg);
if (err < 0)
return err;
cb = nl_cb_clone (nl_socket_get_cb (sk));
if (cb == NULL)
return -NLE_NOMEM;
nl_cb_set (cb, NL_CB_VALID, NL_CB_CUSTOM, info_data_parser, &data);
err = nl_recvmsgs (sk, cb);
nl_cb_put (cb);
if (err < 0)
return err;
nl_wait_for_ack (sk);
return 0;
}
/******************************************************************/
static gboolean