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https://gitee.com/openharmony/third_party_libnl
synced 2025-02-25 22:07:13 +00:00
macvlan: add support for "source" mode
This adds libnl support for new "source" mode. Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
This commit is contained in:
Michael Braun
parent
8d98538357
commit
4b28f70d2b
@ -29,6 +29,9 @@ extern int rtnl_link_macvlan_str2mode(const char *);
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extern char * rtnl_link_macvlan_flags2str(int, char *, size_t);
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extern int rtnl_link_macvlan_str2flags(const char *);
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extern char * rtnl_link_macvlan_macmode2str(int, char *, size_t);
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extern int rtnl_link_macvlan_str2macmode(const char *);
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extern int rtnl_link_macvlan_set_mode(struct rtnl_link *,
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uint32_t);
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extern uint32_t rtnl_link_macvlan_get_mode(struct rtnl_link *);
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@ -39,6 +42,21 @@ extern int rtnl_link_macvlan_unset_flags(struct rtnl_link *,
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uint16_t);
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extern uint16_t rtnl_link_macvlan_get_flags(struct rtnl_link *);
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extern int rtnl_link_macvlan_set_macmode(struct rtnl_link *,
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uint32_t);
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extern int rtnl_link_macvlan_get_macmode(struct rtnl_link *link,
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uint32_t *out_macmode);
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extern int rtnl_link_macvlan_count_macaddr(struct rtnl_link *link,
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uint32_t *out_count);
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extern int rtnl_link_macvlan_get_macaddr(struct rtnl_link *link,
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unsigned int idx,
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const struct nl_addr **addr);
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extern int rtnl_link_macvlan_add_macaddr(struct rtnl_link *link,
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struct nl_addr *addr);
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extern int rtnl_link_macvlan_del_macaddr(struct rtnl_link *link,
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struct nl_addr *addr);
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#ifdef __cplusplus
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}
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#endif
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@ -38,12 +38,17 @@
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/** @cond SKIP */
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#define MACVLAN_HAS_MODE (1<<0)
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#define MACVLAN_HAS_FLAGS (1<<1)
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#define MACVLAN_HAS_MACCOUNT (1<<2)
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#define MACVLAN_HAS_MACDATA (1<<3)
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struct macvlan_info
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{
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uint32_t mvi_mode;
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uint16_t mvi_flags; // there currently is only one flag and kernel has no flags_mask yet
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uint32_t mvi_mask;
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uint32_t mvi_maccount;
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uint32_t mvi_macmode;
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struct nl_addr **mvi_macaddr;
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};
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/** @endcond */
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@ -51,20 +56,26 @@ struct macvlan_info
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static struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX+1] = {
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[IFLA_MACVLAN_MODE] = { .type = NLA_U32 },
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[IFLA_MACVLAN_FLAGS] = { .type = NLA_U16 },
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[IFLA_MACVLAN_MACADDR_MODE] = { .type = NLA_U32 },
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[IFLA_MACVLAN_MACADDR] = { .type = NLA_UNSPEC },
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[IFLA_MACVLAN_MACADDR_DATA] = { .type = NLA_NESTED },
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[IFLA_MACVLAN_MACADDR_COUNT] = { .type = NLA_U32 },
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};
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static int macvlan_alloc(struct rtnl_link *link)
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{
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struct macvlan_info *mvi;
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if (link->l_info)
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memset(link->l_info, 0, sizeof(*mvi));
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else {
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if (link->l_info) {
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mvi = link->l_info;
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memset(mvi, 0, sizeof(*mvi));
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} else {
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if ((mvi = calloc(1, sizeof(*mvi))) == NULL)
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return -NLE_NOMEM;
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link->l_info = mvi;
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}
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mvi->mvi_macmode = MACVLAN_MACADDR_SET;
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return 0;
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}
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@ -74,6 +85,9 @@ static int macvlan_parse(struct rtnl_link *link, struct nlattr *data,
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{
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struct nlattr *tb[IFLA_MACVLAN_MAX+1];
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struct macvlan_info *mvi;
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struct nlattr *nla;
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int i;
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int len;
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int err;
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NL_DBG(3, "Parsing %s link info", link->l_info_ops->io_name);
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@ -96,6 +110,33 @@ static int macvlan_parse(struct rtnl_link *link, struct nlattr *data,
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mvi->mvi_mask |= MACVLAN_HAS_FLAGS;
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}
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if (tb[IFLA_MACVLAN_MACADDR_COUNT]) {
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mvi->mvi_maccount = nla_get_u32(tb[IFLA_MACVLAN_MACADDR_COUNT]);
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mvi->mvi_mask |= MACVLAN_HAS_MACCOUNT;
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}
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if (tb[IFLA_MACVLAN_MACADDR_DATA] &&
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(mvi->mvi_mask & MACVLAN_HAS_MACCOUNT) &&
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mvi->mvi_maccount > 0) {
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nla = nla_data(tb[IFLA_MACVLAN_MACADDR_DATA]);
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len = nla_len(tb[IFLA_MACVLAN_MACADDR_DATA]);
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mvi->mvi_macaddr = calloc(mvi->mvi_maccount,
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sizeof(*(mvi->mvi_macaddr)));
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mvi->mvi_mask |= MACVLAN_HAS_MACDATA;
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i = 0;
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for (; nla_ok(nla, len); nla = nla_next(nla, &len)) {
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if (i >= mvi->mvi_maccount)
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break;
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if (nla_type(nla) != IFLA_MACVLAN_MACADDR ||
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nla_len(nla) < ETH_ALEN)
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continue;
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mvi->mvi_macaddr[i] = nl_addr_alloc_attr(nla, AF_LLC);
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i++;
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}
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}
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err = 0;
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errout:
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return err;
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@ -103,13 +144,25 @@ errout:
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static void macvlan_free(struct rtnl_link *link)
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{
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free(link->l_info);
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struct macvlan_info *mvi;
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int i;
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mvi = link->l_info;
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if (mvi->mvi_mask & MACVLAN_HAS_MACDATA) {
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for (i = 0; i < mvi->mvi_maccount; i++)
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nl_addr_put(mvi->mvi_macaddr[i]);
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}
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free(mvi->mvi_macaddr);
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free(mvi);
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link->l_info = NULL;
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}
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static void macvlan_dump(struct rtnl_link *link, struct nl_dump_params *p)
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{
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char buf[64];
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int i;
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struct macvlan_info *mvi = link->l_info;
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if (mvi->mvi_mask & MACVLAN_HAS_MODE) {
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@ -121,12 +174,23 @@ static void macvlan_dump(struct rtnl_link *link, struct nl_dump_params *p)
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rtnl_link_macvlan_flags2str(mvi->mvi_flags, buf, sizeof(buf));
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nl_dump(p, "%s-flags %s", link->l_info_ops->io_name, buf);
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}
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if (mvi->mvi_mask & MACVLAN_HAS_MACCOUNT)
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nl_dump(p, "macvlan-count %d", mvi->mvi_maccount);
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if (mvi->mvi_mask & MACVLAN_HAS_MACDATA) {
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for (i = 0; i < mvi->mvi_maccount; i++)
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nl_dump(p, "macvlan-sourcemac %s",
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nl_addr2str(mvi->mvi_macaddr[i], buf,
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sizeof(buf)));
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}
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}
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static int macvlan_clone(struct rtnl_link *dst, struct rtnl_link *src)
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{
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struct macvlan_info *vdst, *vsrc = src->l_info;
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int err;
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int i;
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dst->l_info = NULL;
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if ((err = rtnl_link_set_type(dst, "macvlan")) < 0)
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@ -138,28 +202,56 @@ static int macvlan_clone(struct rtnl_link *dst, struct rtnl_link *src)
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memcpy(vdst, vsrc, sizeof(struct macvlan_info));
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if (vsrc->mvi_mask & MACVLAN_HAS_MACDATA) {
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vdst->mvi_macaddr = calloc(vdst->mvi_maccount,
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sizeof(*(vdst->mvi_macaddr)));
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for (i = 0; i < vdst->mvi_maccount; i++)
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vdst->mvi_macaddr[i] = nl_addr_clone(vsrc->mvi_macaddr[i]);
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}
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vdst->mvi_macmode = vsrc->mvi_macmode;
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return 0;
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}
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static int macvlan_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
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{
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struct macvlan_info *mvi = link->l_info;
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struct nlattr *data;
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struct nlattr *data, *datamac = NULL;
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int i, ret;
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if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
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return -NLE_MSGSIZE;
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ret = -NLE_NOMEM;
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if (mvi->mvi_mask & MACVLAN_HAS_MODE)
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NLA_PUT_U32(msg, IFLA_MACVLAN_MODE, mvi->mvi_mode);
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if (mvi->mvi_mask & MACVLAN_HAS_FLAGS)
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NLA_PUT_U16(msg, IFLA_MACVLAN_FLAGS, mvi->mvi_flags);
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nla_nest_end(msg, data);
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if (mvi->mvi_mask & MACVLAN_HAS_MACDATA) {
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NLA_PUT_U32(msg, IFLA_MACVLAN_MACADDR_MODE, mvi->mvi_macmode);
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datamac = nla_nest_start(msg, IFLA_MACVLAN_MACADDR_DATA);
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if (!datamac)
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goto nla_put_failure;
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for (i = 0; i < mvi->mvi_maccount; i++) {
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NLA_PUT_ADDR(msg, IFLA_MACVLAN_MACADDR,
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mvi->mvi_macaddr[i]);
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}
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}
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ret = 0;
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nla_put_failure:
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if (datamac)
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nla_nest_end(msg, datamac);
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return 0;
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nla_nest_end(msg, data);
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return ret;
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}
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static struct rtnl_link_info_ops macvlan_info_ops = {
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@ -249,12 +341,24 @@ int rtnl_link_is_macvlan(struct rtnl_link *link)
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int rtnl_link_macvlan_set_mode(struct rtnl_link *link, uint32_t mode)
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{
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struct macvlan_info *mvi = link->l_info;
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int i;
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IS_MACVLAN_LINK_ASSERT(link);
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mvi->mvi_mode = mode;
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mvi->mvi_mask |= MACVLAN_HAS_MODE;
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if (mode != MACVLAN_MODE_SOURCE) {
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if (mvi->mvi_mask & MACVLAN_HAS_MACDATA) {
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for (i = 0; i < mvi->mvi_maccount; i++)
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nl_addr_put(mvi->mvi_macaddr[i]);
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}
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free(mvi->mvi_macaddr);
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mvi->mvi_macaddr = NULL;
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mvi->mvi_mask &= ~MACVLAN_HAS_MACDATA;
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mvi->mvi_mask &= ~MACVLAN_HAS_MACCOUNT;
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}
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return 0;
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}
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@ -276,6 +380,54 @@ uint32_t rtnl_link_macvlan_get_mode(struct rtnl_link *link)
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return 0;
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}
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/**
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* Set MACVLAN MACMODE
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* @arg link Link object
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* @arg mode MACVLAN mac list modification mode
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*
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* Only for macvlan SOURCE mode.
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*
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* @return 0 on success or a negative error code
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*/
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int rtnl_link_macvlan_set_macmode(struct rtnl_link *link, uint32_t macmode)
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{
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struct macvlan_info *mvi = link->l_info;
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IS_MACVLAN_LINK_ASSERT(link);
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
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(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
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return -NLE_INVAL;
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mvi->mvi_macmode = macmode;
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return 0;
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}
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/**
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* Get MACVLAN MACMODE
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* @arg link Link object
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* @arg out_macmode mac list modification mode
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*
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* Only for SOURCE mode.
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*
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* @return 0 on success or a negative error code.
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*/
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int rtnl_link_macvlan_get_macmode(struct rtnl_link *link, uint32_t *out_macmode)
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{
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struct macvlan_info *mvi = link->l_info;
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IS_MACVLAN_LINK_ASSERT(link);
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
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(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
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return -NLE_INVAL;
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*out_macmode = mvi->mvi_macmode;
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return 0;
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}
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/**
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* Set MACVLAN flags
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* @arg link Link object
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@ -332,6 +484,153 @@ uint16_t rtnl_link_macvlan_get_flags(struct rtnl_link *link)
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return mvi->mvi_flags;
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}
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/**
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* Get number of MAC-Addr for MACVLAN device in source mode
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* @arg link Link object
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* @arg out_count number of mac addresses
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*
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* @return 0 on success or a negative error code.
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*/
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int rtnl_link_macvlan_count_macaddr(struct rtnl_link *link, uint32_t *out_count)
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{
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struct macvlan_info *mvi = link->l_info;
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IS_MACVLAN_LINK_ASSERT(link);
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
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(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
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return -NLE_INVAL;
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if (!(mvi->mvi_mask & MACVLAN_HAS_MACCOUNT))
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return -NLE_INVAL;
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*out_count = mvi->mvi_maccount;
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return 0;
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}
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/**
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* Get configured remote MAC-Addr from MACVLAN device in source mode
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* @arg link Link object
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* @arg out_addr address object
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*
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* The returned nl_addr struct needs NOT to be released using nl_addr_put.
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* It is only valid until the address is not removed from this link object
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* or its mode is changed to non-source.
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*
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* @return 0 on success or negative error code
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*/
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int rtnl_link_macvlan_get_macaddr(struct rtnl_link *link, unsigned int idx,
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const struct nl_addr **out_addr)
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{
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struct macvlan_info *mvi = link->l_info;
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IS_MACVLAN_LINK_ASSERT(link);
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
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(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
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return -NLE_INVAL;
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if (!(mvi->mvi_mask & MACVLAN_HAS_MACCOUNT) ||
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!(mvi->mvi_mask & MACVLAN_HAS_MACDATA))
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return -NLE_INVAL;
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if (idx >= mvi->mvi_maccount)
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*out_addr = NULL;
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else
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*out_addr = mvi->mvi_macaddr[idx];
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return 0;
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}
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/**
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* Add MAC-Addr to MACVLAN device in source mode
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* @arg link Link object
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* @arg addr MAC-Addr
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*
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* addr is not release but cloned by this method.
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*
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* @return 0 on success or a negative error code.
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*/
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int rtnl_link_macvlan_add_macaddr(struct rtnl_link *link, struct nl_addr *addr)
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{
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struct macvlan_info *mvi = link->l_info;
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struct nl_addr **mvi_macaddr;
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size_t newsize;
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IS_MACVLAN_LINK_ASSERT(link);
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if (nl_addr_get_family(addr) != AF_LLC)
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return -NLE_INVAL;
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
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(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
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return -NLE_INVAL;
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if (!(mvi->mvi_mask & MACVLAN_HAS_MACCOUNT) ||
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!(mvi->mvi_mask & MACVLAN_HAS_MACDATA))
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return -NLE_INVAL;
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newsize = (mvi->mvi_maccount + 1) * sizeof(*(mvi->mvi_macaddr));
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mvi_macaddr = realloc(mvi->mvi_macaddr, newsize);
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if (!mvi_macaddr)
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return -NLE_NOMEM;
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mvi->mvi_macaddr = mvi_macaddr;
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mvi->mvi_macaddr[mvi->mvi_maccount] = nl_addr_clone(addr);
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mvi->mvi_maccount++;
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mvi->mvi_mask |= MACVLAN_HAS_MACCOUNT;
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mvi->mvi_mask |= MACVLAN_HAS_MACDATA;
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return 0;
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}
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/**
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* Remove MAC-Addr from MACVLAN device in source mode
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* @arg link Link object
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* @arg addr MAC-Addr
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*
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* addr is not release by this method.
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*
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* @return 0 on success or a negative error code.
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*/
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int rtnl_link_macvlan_del_macaddr(struct rtnl_link *link, struct nl_addr *addr)
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{
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struct macvlan_info *mvi = link->l_info;
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int found, i;
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IS_MACVLAN_LINK_ASSERT(link);
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if (nl_addr_get_family(addr) != AF_LLC)
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return -NLE_INVAL;
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if (!(mvi->mvi_mask & MACVLAN_HAS_MODE) ||
|
||||
(mvi->mvi_mode != MACVLAN_MODE_SOURCE))
|
||||
return -NLE_INVAL;
|
||||
|
||||
if (!(mvi->mvi_mask & MACVLAN_HAS_MACCOUNT) ||
|
||||
!(mvi->mvi_mask & MACVLAN_HAS_MACDATA))
|
||||
return -NLE_INVAL;
|
||||
|
||||
found = 0; i = 0;
|
||||
while (i + found < mvi->mvi_maccount) {
|
||||
mvi->mvi_macaddr[i] = mvi->mvi_macaddr[i + found];
|
||||
if (found > 0)
|
||||
mvi->mvi_macaddr[i + found] = NULL;
|
||||
if (nl_addr_cmp(addr, mvi->mvi_macaddr[i]) == 0) {
|
||||
nl_addr_put(mvi->mvi_macaddr[i]);
|
||||
mvi->mvi_macaddr[i] = NULL;
|
||||
found++;
|
||||
} else
|
||||
i++;
|
||||
}
|
||||
|
||||
mvi->mvi_maccount -= found;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** @} */
|
||||
|
||||
|
||||
@ -477,6 +776,14 @@ static const struct trans_tbl macvlan_modes[] = {
|
||||
__ADD(MACVLAN_MODE_VEPA, vepa),
|
||||
__ADD(MACVLAN_MODE_BRIDGE, bridge),
|
||||
__ADD(MACVLAN_MODE_PASSTHRU, passthru),
|
||||
__ADD(MACVLAN_MODE_SOURCE, source),
|
||||
};
|
||||
|
||||
static const struct trans_tbl macvlan_macmodes[] = {
|
||||
__ADD(MACVLAN_MACADDR_ADD, "add"),
|
||||
__ADD(MACVLAN_MACADDR_DEL, "del"),
|
||||
__ADD(MACVLAN_MACADDR_SET, "set"),
|
||||
__ADD(MACVLAN_MACADDR_FLUSH, "flush"),
|
||||
};
|
||||
|
||||
/**
|
||||
@ -521,6 +828,17 @@ int rtnl_link_macvlan_str2mode(const char *name)
|
||||
return __str2type(name, macvlan_modes, ARRAY_SIZE(macvlan_modes));
|
||||
}
|
||||
|
||||
char *rtnl_link_macvlan_macmode2str(int mode, char *buf, size_t len)
|
||||
{
|
||||
return __type2str(mode, buf, len, macvlan_modes,
|
||||
ARRAY_SIZE(macvlan_macmodes));
|
||||
}
|
||||
|
||||
int rtnl_link_macvlan_str2macmode(const char *name)
|
||||
{
|
||||
return __str2type(name, macvlan_modes, ARRAY_SIZE(macvlan_macmodes));
|
||||
}
|
||||
|
||||
char *rtnl_link_macvtap_mode2str(int mode, char *buf, size_t len)
|
||||
{
|
||||
return __type2str(mode, buf, len, macvlan_modes, ARRAY_SIZE(macvlan_modes));
|
||||
|
||||
@ -956,5 +956,13 @@ global:
|
||||
rtnl_link_bridge_set_hwmode;
|
||||
rtnl_link_bridge_hwmode2str;
|
||||
rtnl_link_bridge_str2hwmode;
|
||||
rtnl_link_macvlan_add_macaddr;
|
||||
rtnl_link_macvlan_count_macaddr;
|
||||
rtnl_link_macvlan_del_macaddr;
|
||||
rtnl_link_macvlan_get_macaddr;
|
||||
rtnl_link_macvlan_get_macmode;
|
||||
rtnl_link_macvlan_macmode2str;
|
||||
rtnl_link_macvlan_set_macmode;
|
||||
rtnl_link_macvlan_str2macmode;
|
||||
} libnl_3_2_28;
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user