cellular-infrastructure
/
osmo-gtp-kernel
9
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

gtp-rtnl: refactor common rtnetlink socket initialization code 

This allow reusing this code in follow up changes.
This commit is contained in:
Pablo Neira Ayuso 2014-03-20 16:21:29 +01:00
parent e83f70671e
commit 4779603790
1 changed files with 36 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
libgtnl/src/gtp-rtnl.c
View File

@ -28,16 +28,14 @@ gtp_put_nlmsg(char *buf, uint16_t type, uint16_t nl_flags, uint32_t seq)
return nlh;
}
static int gtp_dev_talk(struct nlmsghdr *nlh, uint32_t seq)
static struct mnl_socket *rtnl_open(void)
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
int ret;
nl = mnl_socket_open(NETLINK_ROUTE);
if (nl == NULL) {
perror("mnl_socket_open");
return -1;
return NULL;
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
@ -45,28 +43,42 @@ static int gtp_dev_talk(struct nlmsghdr *nlh, uint32_t seq)
goto err;
}
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
goto err;
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret == -1) {
perror("read");
goto err;
}
ret = mnl_cb_run(buf, ret, seq, mnl_socket_get_portid(nl), NULL, NULL);
if (ret == -1){
perror("callback");
goto err;
}
mnl_socket_close(nl);
return 0;
return nl;
err:
mnl_socket_close(nl);
return -1;
return NULL;
}
static int rtnl_talk(struct mnl_socket *nl, struct nlmsghdr *nlh)
{
char buf[MNL_SOCKET_BUFFER_SIZE];
int ret;
ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
if (ret < 0)
return ret;
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret < 0)
return ret;
return mnl_cb_run(buf, ret, nlh->nlmsg_seq, mnl_socket_get_portid(nl),
NULL, NULL);
}
static int gtp_dev_talk(struct nlmsghdr *nlh, uint32_t seq)
{
struct mnl_socket *nl;
int ret;
nl = rtnl_open();
if (nl == NULL)
return -1;
ret = rtnl_talk(nl, nlh);
mnl_socket_close(nl);
return ret;
}
int gtp_dev_create(const char *gtp_ifname, const char *real_ifname,