gtp-rtnl: refactor code to prepare the addition of gtp_dev_destroy
Add gtp_dev_talk() and gtp_put_nlmsg().
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efdbb3bc73
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b94023299f
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@ -15,33 +15,24 @@
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#include "internal.h"
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#include "internal.h"
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int gtp_dev_create(const char *ifname)
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static struct nlmsghdr *
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gtp_put_nlmsg(char *buf, uint16_t type, uint16_t nl_flags, uint32_t seq)
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{
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struct nlmsghdr *nlh;
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nlh = mnl_nlmsg_put_header(buf);
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nlh->nlmsg_type = type;
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nlh->nlmsg_flags = NLM_F_REQUEST | nl_flags;
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nlh->nlmsg_seq = seq;
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return nlh;
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}
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static int gtp_dev_talk(struct nlmsghdr *nlh, uint32_t seq)
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{
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{
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struct mnl_socket *nl;
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struct mnl_socket *nl;
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char buf[MNL_SOCKET_BUFFER_SIZE];
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char buf[MNL_SOCKET_BUFFER_SIZE];
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struct nlmsghdr *nlh;
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struct ifinfomsg *ifm;
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int ret;
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int ret;
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unsigned int seq, portid;
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struct nlattr *nest, *nest2;
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nlh = mnl_nlmsg_put_header(buf);
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nlh->nlmsg_type = RTM_NEWLINK;
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nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
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nlh->nlmsg_seq = seq = time(NULL);
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ifm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifm));
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ifm->ifi_family = AF_INET;
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ifm->ifi_change |= IFF_UP;
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ifm->ifi_flags |= IFF_UP;
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mnl_attr_put_u32(nlh, IFLA_LINK, if_nametoindex(ifname));
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nest = mnl_attr_nest_start(nlh, IFLA_LINKINFO);
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mnl_attr_put_str(nlh, IFLA_INFO_KIND, "gtp");
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nest2 = mnl_attr_nest_start(nlh, IFLA_INFO_DATA);
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mnl_attr_put_u32(nlh, IFLA_GTP_LOCAL_ADDR_IPV4, 0);
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mnl_attr_put_u32(nlh, IFLA_GTP_HASHSIZE, 131072);
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mnl_attr_nest_end(nlh, nest2);
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mnl_attr_nest_end(nlh, nest);
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nl = mnl_socket_open(NETLINK_ROUTE);
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nl = mnl_socket_open(NETLINK_ROUTE);
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if (nl == NULL) {
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if (nl == NULL) {
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@ -53,7 +44,6 @@ int gtp_dev_create(const char *ifname)
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perror("mnl_socket_bind");
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perror("mnl_socket_bind");
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goto err;
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goto err;
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}
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}
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portid = mnl_socket_get_portid(nl);
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mnl_nlmsg_fprintf(stdout, nlh, nlh->nlmsg_len,
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mnl_nlmsg_fprintf(stdout, nlh, nlh->nlmsg_len,
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sizeof(struct ifinfomsg));
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sizeof(struct ifinfomsg));
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@ -69,7 +59,7 @@ int gtp_dev_create(const char *ifname)
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goto err;
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goto err;
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}
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}
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ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
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ret = mnl_cb_run(buf, ret, seq, mnl_socket_get_portid(nl), NULL, NULL);
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if (ret == -1){
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if (ret == -1){
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perror("callback");
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perror("callback");
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goto err;
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goto err;
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@ -81,4 +71,30 @@ err:
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mnl_socket_close(nl);
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mnl_socket_close(nl);
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return -1;
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return -1;
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}
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}
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int gtp_dev_create(const char *ifname)
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{
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char buf[MNL_SOCKET_BUFFER_SIZE];
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struct nlmsghdr *nlh;
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struct ifinfomsg *ifm;
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unsigned int seq = time(NULL);
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struct nlattr *nest, *nest2;
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nlh = gtp_put_nlmsg(buf, RTM_NEWLINK, NLM_F_CREATE | NLM_F_ACK, seq);
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ifm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifm));
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ifm->ifi_family = AF_INET;
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ifm->ifi_change |= IFF_UP;
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ifm->ifi_flags |= IFF_UP;
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mnl_attr_put_u32(nlh, IFLA_LINK, if_nametoindex(ifname));
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nest = mnl_attr_nest_start(nlh, IFLA_LINKINFO);
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mnl_attr_put_str(nlh, IFLA_INFO_KIND, "gtp");
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nest2 = mnl_attr_nest_start(nlh, IFLA_INFO_DATA);
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mnl_attr_put_u32(nlh, IFLA_GTP_LOCAL_ADDR_IPV4, 0);
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mnl_attr_put_u32(nlh, IFLA_GTP_HASHSIZE, 131072);
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mnl_attr_nest_end(nlh, nest2);
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mnl_attr_nest_end(nlh, nest);
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return gtp_dev_talk(nlh, seq);
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}
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EXPORT_SYMBOL(gtp_dev_create);
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EXPORT_SYMBOL(gtp_dev_create);
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