mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2026-02-03 20:40:34 +01:00
platform: add dump/update function for MPTCP addresses
Since the generic netlink API does (currently) not support notifications about changes of the MPTCP addresses, we won't get notifications when they change, and it seems wrong to put such things in the NMPlatform cache. We can just get the list of endpoints by polling, so add a function nm_platform_mptcp_addrs_dump() for that. Also, add nm_platform_mptcp_addr_update() which can add/remove/update MPTCP addresses.
This commit is contained in:
Thomas Haller
parent
ec64559caa
commit
ce635c4339
5 changed files with 366 additions and 19 deletions
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@ -9,6 +9,7 @@
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#include <syslog.h>
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#include "libnm-platform/nm-linux-platform.h"
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#include "libnm-platform/nmp-object.h"
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#include "nm-test-utils-core.h"
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@ -50,6 +51,18 @@ read_argv(int *argc, char ***argv)
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return TRUE;
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}
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/*****************************************************************************/
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static void
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mptcp_addr_dump(NMPlatform *platform)
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{
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gs_unref_ptrarray GPtrArray *addrs = NULL;
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addrs = nm_platform_mptcp_addrs_dump(platform);
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}
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/*****************************************************************************/
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int
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main(int argc, char **argv)
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{
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@ -69,6 +82,8 @@ main(int argc, char **argv)
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nm_linux_platform_setup();
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mptcp_addr_dump(NM_PLATFORM_GET);
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if (global_opt.persist)
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g_main_loop_run(loop);
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@ -9334,6 +9334,9 @@ object_delete(NMPlatform *platform, const NMPObject *obj)
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case NMP_OBJECT_TYPE_TFILTER:
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nlmsg = _nl_msg_new_tfilter(RTM_DELTFILTER, 0, NMP_OBJECT_CAST_TFILTER(obj));
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break;
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case NMP_OBJECT_TYPE_MPTCP_ADDR:
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return (nm_platform_mptcp_addr_update(platform, FALSE, NMP_OBJECT_CAST_MPTCP_ADDR(obj))
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>= 0);
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default:
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break;
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}
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@ -10101,6 +10104,301 @@ out:
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/*****************************************************************************/
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static const NMPObject *
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_mptcp_addrs_dump_parse_addr(struct nlattr *attr)
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{
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static const struct nla_policy policy[] = {
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[MPTCP_PM_ADDR_ATTR_FAMILY] = {.type = NLA_U16},
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[MPTCP_PM_ADDR_ATTR_ID] = {.type = NLA_U8},
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[MPTCP_PM_ADDR_ATTR_ADDR4] = {.minlen = sizeof(in_addr_t)},
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[MPTCP_PM_ADDR_ATTR_ADDR6] = {.minlen = sizeof(struct in6_addr)},
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[MPTCP_PM_ADDR_ATTR_PORT] = {.type = NLA_U16},
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[MPTCP_PM_ADDR_ATTR_FLAGS] = {.type = NLA_U32},
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[MPTCP_PM_ADDR_ATTR_IF_IDX] = {.type = NLA_S32},
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};
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struct nlattr *tb[G_N_ELEMENTS(policy)];
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nm_auto_nmpobj NMPObject *obj = NULL;
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NMPlatformMptcpAddr *mptcp_addr;
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int addr_family;
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int addr_attr;
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if (nla_parse_nested_arr(tb, attr, policy) < 0)
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return NULL;
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if (!tb[MPTCP_PM_ADDR_ATTR_ID])
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return NULL;
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obj = nmp_object_new(NMP_OBJECT_TYPE_MPTCP_ADDR, NULL);
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mptcp_addr = &obj->mptcp_addr;
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mptcp_addr->id = nla_get_u8(tb[MPTCP_PM_ADDR_ATTR_ID]);
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if (!tb[MPTCP_PM_ADDR_ATTR_FAMILY]) {
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/* If we don't have the family. Only create a stub object containing
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* the ID. */
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goto out;
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}
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addr_family = nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_FAMILY]);
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if (addr_family == AF_INET)
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addr_attr = MPTCP_PM_ADDR_ATTR_ADDR4;
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else if (addr_family == AF_INET6)
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addr_attr = MPTCP_PM_ADDR_ATTR_ADDR6;
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else
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goto out;
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if (!tb[addr_attr])
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goto out;
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mptcp_addr->addr_family = addr_family;
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memcpy(&mptcp_addr->addr, nla_data(tb[addr_attr]), nm_utils_addr_family_to_size(addr_family));
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if (tb[MPTCP_PM_ADDR_ATTR_PORT])
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mptcp_addr->port = nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT]);
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if (tb[MPTCP_PM_ADDR_ATTR_IF_IDX])
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mptcp_addr->ifindex = nla_get_s32(tb[MPTCP_PM_ADDR_ATTR_IF_IDX]);
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if (tb[MPTCP_PM_ADDR_ATTR_FLAGS])
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mptcp_addr->flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]);
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out:
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return g_steal_pointer(&obj);
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}
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typedef struct {
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GPtrArray *addrs;
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} FetchMptcpAddrParseData;
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static int
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_mptcp_addrs_dump_parse_cb(const struct nl_msg *msg, void *arg)
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{
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static const struct nla_policy policy[] = {
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[MPTCP_PM_ATTR_ADDR] = {.type = NLA_NESTED},
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};
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struct nlattr *tb[G_N_ELEMENTS(policy)];
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FetchMptcpAddrParseData *parse_data = arg;
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if (genlmsg_parse_arr(nlmsg_hdr(msg), 0, tb, policy) < 0)
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return NL_SKIP;
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if (tb[MPTCP_PM_ATTR_ADDR]) {
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const NMPObject *obj;
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obj = _mptcp_addrs_dump_parse_addr(tb[MPTCP_PM_ATTR_ADDR]);
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if (obj)
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g_ptr_array_add(parse_data->addrs, (gpointer) obj);
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}
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return NL_OK;
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}
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#define EXTACK_MSG_BUFSIZE 200
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static int
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_mptcp_addr_update_err_cb(const struct sockaddr_nl *nla, const struct nlmsgerr *nlerr, void *arg)
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{
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char *out_extack_msg = arg;
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const char *extack_msg;
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int errsv;
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errsv = nlmsg_parse_error(nlmsg_undata(nlerr), &extack_msg);
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if (extack_msg)
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g_strlcpy(out_extack_msg, extack_msg, EXTACK_MSG_BUFSIZE);
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return errsv;
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}
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static int
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mptcp_addr_update(NMPlatform *platform, NMOptionBool add, const NMPlatformMptcpAddr *addr)
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{
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NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform);
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nm_auto_nlmsg struct nl_msg *nlmsg = NULL;
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struct nlattr *nla_nest;
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char sbuf[NM_UTILS_TO_STRING_BUFFER_SIZE];
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guint16 genl_family_id;
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guint8 cmd_num;
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const char *cmd_str;
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int nle;
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char extack_msg[EXTACK_MSG_BUFSIZE];
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const struct nl_cb cb = {
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.err_cb = _mptcp_addr_update_err_cb,
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.err_arg = extack_msg,
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};
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extack_msg[0] = '\0';
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if (add == NM_OPTION_BOOL_DEFAULT) {
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cmd_num = MPTCP_PM_CMD_SET_FLAGS;
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cmd_str = "update";
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} else if (add) {
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cmd_num = MPTCP_PM_CMD_ADD_ADDR;
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cmd_str = "add";
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} else {
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cmd_num = MPTCP_PM_CMD_DEL_ADDR;
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cmd_str = "delete";
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}
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nm_assert_addr_family_or_unspec(addr->addr_family);
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nm_assert(cmd_num != MPTCP_PM_CMD_ADD_ADDR
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|| (addr->port == 0 && addr->addr_family != AF_UNSPEC));
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nm_assert(cmd_num != MPTCP_PM_CMD_SET_FLAGS || (addr->id != 0 && addr->port == 0));
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nm_assert(cmd_num != MPTCP_PM_CMD_DEL_ADDR || addr->id != 0);
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genl_family_id = nm_platform_genl_get_family_id(platform, NMP_GENL_FAMILY_TYPE_MPTCP_PM);
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if (genl_family_id == 0) {
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_LOGT("mptcp: %s address %s fails because %s generic netlink family is unknown",
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cmd_str,
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nm_platform_mptcp_addr_to_string(addr, sbuf, sizeof(sbuf)),
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nmp_genl_family_infos[NMP_GENL_FAMILY_TYPE_MPTCP_PM].name);
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return -ENOSYS;
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}
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_LOGT("mptcp: %s address %s",
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cmd_str,
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nm_platform_mptcp_addr_to_string(addr, sbuf, sizeof(sbuf)));
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nlmsg = nlmsg_alloc_size(nlmsg_total_size(GENL_HDRLEN) + 200);
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if (!genlmsg_put(nlmsg,
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NL_AUTO_PORT,
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NL_AUTO_SEQ,
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genl_family_id,
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0,
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NLM_F_REQUEST,
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cmd_num,
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MPTCP_PM_VER))
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goto nla_put_failure;
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nla_nest = nla_nest_start(nlmsg, MPTCP_PM_ATTR_ADDR | NLA_F_NESTED);
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if (!nla_nest)
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goto nla_put_failure;
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if (addr->id != 0)
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NLA_PUT_U8(nlmsg, MPTCP_PM_ADDR_ATTR_ID, addr->id);
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if (addr->flags != 0)
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NLA_PUT_U32(nlmsg, MPTCP_PM_ADDR_ATTR_FLAGS, addr->flags);
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if (addr->ifindex != 0)
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NLA_PUT_S32(nlmsg, MPTCP_PM_ADDR_ATTR_IF_IDX, addr->ifindex);
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if (addr->port != 0)
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NLA_PUT_U16(nlmsg, MPTCP_PM_ADDR_ATTR_PORT, addr->port);
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if (addr->addr_family != AF_UNSPEC) {
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int addr_attr;
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NLA_PUT_U16(nlmsg, MPTCP_PM_ADDR_ATTR_FAMILY, addr->addr_family);
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if (addr->addr_family == AF_INET)
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addr_attr = MPTCP_PM_ADDR_ATTR_ADDR4;
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else if (addr->addr_family == AF_INET6)
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addr_attr = MPTCP_PM_ADDR_ATTR_ADDR6;
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else
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g_return_val_if_reached(-NME_BUG);
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NLA_PUT(nlmsg, addr_attr, nm_utils_addr_family_to_size(addr->addr_family), &addr->addr);
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}
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NLA_NEST_END(nlmsg, nla_nest);
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nle = nl_send_auto(priv->sk_genl_sync, nlmsg);
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if (nle < 0) {
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_LOGT("mptcp: %s address %s: failed sending request: %s (%d)",
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cmd_str,
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nm_platform_mptcp_addr_to_string(addr, sbuf, sizeof(sbuf)),
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nm_strerror(nle),
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nle);
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return nle;
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}
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do {
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nle = nl_recvmsgs(priv->sk_genl_sync, &cb);
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} while (nle == -EAGAIN);
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if (nle < 0) {
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_LOGT("mptcp: %s address %s: failed: %s (%d)%s%s%s",
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cmd_str,
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nm_platform_mptcp_addr_to_string(addr, sbuf, sizeof(sbuf)),
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nm_strerror(nle),
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nle,
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NM_PRINT_FMT_QUOTED(extack_msg[0] != '\0', " \"", extack_msg, "\"", ""));
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return nle;
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}
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_LOGT("mptcp: %s address %s: success",
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cmd_str,
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nm_platform_mptcp_addr_to_string(addr, sbuf, sizeof(sbuf)));
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return 0;
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nla_put_failure:
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g_return_val_if_reached(-NME_BUG);
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}
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static GPtrArray *
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mptcp_addrs_dump(NMPlatform *platform)
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{
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NMLinuxPlatformPrivate *priv = NM_LINUX_PLATFORM_GET_PRIVATE(platform);
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gs_unref_ptrarray GPtrArray *addrs = NULL;
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nm_auto_nlmsg struct nl_msg *nlmsg = NULL;
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FetchMptcpAddrParseData parse_data;
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guint16 genl_family_id;
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int r;
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guint i;
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genl_family_id = nm_platform_genl_get_family_id(platform, NMP_GENL_FAMILY_TYPE_MPTCP_PM);
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if (genl_family_id == 0) {
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_LOGT("mptcp: dump addresses fails because %s generic netlink family is unknown",
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nmp_genl_family_infos[NMP_GENL_FAMILY_TYPE_MPTCP_PM].name);
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return NULL;
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}
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nlmsg = nlmsg_alloc_size(nlmsg_total_size(GENL_HDRLEN));
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if (!genlmsg_put(nlmsg,
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NL_AUTO_PORT,
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NL_AUTO_SEQ,
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genl_family_id,
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0,
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NLM_F_REQUEST | NLM_F_DUMP,
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MPTCP_PM_CMD_GET_ADDR,
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MPTCP_PM_VER))
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g_return_val_if_reached(NULL);
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r = nl_send_auto(priv->sk_genl_sync, nlmsg);
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if (r < 0) {
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_LOGT("mptcp: dump addresses failed to send dump request: %s", nm_strerror(r));
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return NULL;
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}
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addrs = g_ptr_array_new_with_free_func((GDestroyNotify) nmp_object_unref);
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parse_data = (FetchMptcpAddrParseData){
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.addrs = addrs,
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};
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nl_recvmsgs(priv->sk_genl_sync,
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&((const struct nl_cb){
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.valid_cb = _mptcp_addrs_dump_parse_cb,
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.valid_arg = (gpointer) &parse_data,
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}));
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if (_LOGT_ENABLED()) {
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_LOGT("mptcp: %u addresses dumped", addrs->len);
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for (i = 0; i < addrs->len; i++) {
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char sbuf[NM_UTILS_TO_STRING_BUFFER_SIZE];
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_LOGT("mptcp: address[%04d]: %s",
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i,
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nmp_object_to_string(addrs->pdata[i],
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NMP_OBJECT_TO_STRING_PUBLIC,
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sbuf,
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sizeof(sbuf)));
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}
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}
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return g_steal_pointer(&addrs);
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}
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/*****************************************************************************/
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static void
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cache_update_link_udev(NMPlatform *platform, int ifindex, struct udev_device *udevice)
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{
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@ -10589,4 +10887,6 @@ nm_linux_platform_class_init(NMLinuxPlatformClass *klass)
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platform_class->process_events = process_events;
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platform_class->genl_get_family_id = genl_get_family_id;
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platform_class->mptcp_addr_update = mptcp_addr_update;
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platform_class->mptcp_addrs_dump = mptcp_addrs_dump;
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}
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@ -7,6 +7,8 @@
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#include "nm-platform.h"
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#include "libnm-std-aux/nm-linux-compat.h"
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#include <stdlib.h>
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#include <unistd.h>
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#include <netinet/in.h>
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@ -402,7 +404,7 @@ const NMPGenlFamilyInfo nmp_genl_family_infos[_NMP_GENL_FAMILY_TYPE_NUM] = {
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},
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[NMP_GENL_FAMILY_TYPE_MPTCP_PM] =
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{
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.name = "mptcp_pm",
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.name = MPTCP_PM_NAME,
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},
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[NMP_GENL_FAMILY_TYPE_NL80211] =
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{
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@ -5320,23 +5322,26 @@ nm_platform_object_delete(NMPlatform *self, const NMPObject *obj)
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_CHECK_SELF(self, klass, FALSE);
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switch (NMP_OBJECT_GET_TYPE(obj)) {
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case NMP_OBJECT_TYPE_ROUTING_RULE:
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_LOGD("%s: delete %s",
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NMP_OBJECT_GET_CLASS(obj)->obj_type_name,
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nmp_object_to_string(obj, NMP_OBJECT_TO_STRING_PUBLIC, sbuf, sizeof(sbuf)));
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break;
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case NMP_OBJECT_TYPE_IP4_ROUTE:
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case NMP_OBJECT_TYPE_IP6_ROUTE:
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case NMP_OBJECT_TYPE_QDISC:
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case NMP_OBJECT_TYPE_TFILTER:
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ifindex = NMP_OBJECT_CAST_OBJ_WITH_IFINDEX(obj)->ifindex;
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_LOG3D("%s: delete %s",
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NMP_OBJECT_GET_CLASS(obj)->obj_type_name,
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nmp_object_to_string(obj, NMP_OBJECT_TO_STRING_PUBLIC, sbuf, sizeof(sbuf)));
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break;
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default:
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g_return_val_if_reached(FALSE);
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if (_LOGD_ENABLED()) {
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switch (NMP_OBJECT_GET_TYPE(obj)) {
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case NMP_OBJECT_TYPE_ROUTING_RULE:
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case NMP_OBJECT_TYPE_MPTCP_ADDR:
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_LOGD("%s: delete %s",
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NMP_OBJECT_GET_CLASS(obj)->obj_type_name,
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nmp_object_to_string(obj, NMP_OBJECT_TO_STRING_PUBLIC, sbuf, sizeof(sbuf)));
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break;
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case NMP_OBJECT_TYPE_IP4_ROUTE:
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case NMP_OBJECT_TYPE_IP6_ROUTE:
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case NMP_OBJECT_TYPE_QDISC:
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case NMP_OBJECT_TYPE_TFILTER:
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ifindex = NMP_OBJECT_CAST_OBJ_WITH_IFINDEX(obj)->ifindex;
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_LOG3D("%s: delete %s",
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NMP_OBJECT_GET_CLASS(obj)->obj_type_name,
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nmp_object_to_string(obj, NMP_OBJECT_TO_STRING_PUBLIC, sbuf, sizeof(sbuf)));
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break;
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default:
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g_return_val_if_reached(FALSE);
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}
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}
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return klass->object_delete(self, obj);
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|
|
@ -9393,6 +9398,24 @@ nm_platform_genl_get_family_id(NMPlatform *self, NMPGenlFamilyType family_type)
|
|||
|
||||
/*****************************************************************************/
|
||||
|
||||
int
|
||||
nm_platform_mptcp_addr_update(NMPlatform *self, NMOptionBool add, const NMPlatformMptcpAddr *addr)
|
||||
{
|
||||
_CHECK_SELF(self, klass, -NME_BUG);
|
||||
|
||||
return klass->mptcp_addr_update(self, add, addr);
|
||||
}
|
||||
|
||||
GPtrArray *
|
||||
nm_platform_mptcp_addrs_dump(NMPlatform *self)
|
||||
{
|
||||
_CHECK_SELF(self, klass, NULL);
|
||||
|
||||
return klass->mptcp_addrs_dump(self);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
GHashTable *
|
||||
nm_platform_ip4_address_addr_to_hash(NMPlatform *self, int ifindex)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -1394,6 +1394,10 @@ typedef struct {
|
|||
|
||||
guint16 (*genl_get_family_id)(NMPlatform *platform, NMPGenlFamilyType family_type);
|
||||
|
||||
int (*mptcp_addr_update)(NMPlatform *self, NMOptionBool add, const NMPlatformMptcpAddr *addr);
|
||||
|
||||
GPtrArray *(*mptcp_addrs_dump)(NMPlatform *self);
|
||||
|
||||
} NMPlatformClass;
|
||||
|
||||
/* NMPlatform signals
|
||||
|
|
@ -2668,4 +2672,9 @@ gboolean nm_platform_ip_address_match(int addr_family,
|
|||
|
||||
guint16 nm_platform_genl_get_family_id(NMPlatform *self, NMPGenlFamilyType family_type);
|
||||
|
||||
int
|
||||
nm_platform_mptcp_addr_update(NMPlatform *self, NMOptionBool add, const NMPlatformMptcpAddr *addr);
|
||||
|
||||
GPtrArray *nm_platform_mptcp_addrs_dump(NMPlatform *self);
|
||||
|
||||
#endif /* __NETWORKMANAGER_PLATFORM_H__ */
|
||||
|
|
|
|||
|
|
@ -1785,7 +1785,7 @@ _vt_cmd_obj_is_alive_tfilter(const NMPObject *obj)
|
|||
static gboolean
|
||||
_vt_cmd_obj_is_alive_mptcp_addr(const NMPObject *obj)
|
||||
{
|
||||
return NM_IN_SET(obj->mptcp_addr.addr_family, AF_INET, AF_INET6);
|
||||
return NM_IN_SET(obj->mptcp_addr.addr_family, AF_INET, AF_INET6, AF_UNSPEC);
|
||||
}
|
||||
|
||||
gboolean
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue