EXPORT_SYMBOL_GPL(ip_tunnel_get_stats64);
static const struct nla_policy ip_tun_policy[LWTUNNEL_IP_MAX + 1] = {
+ [LWTUNNEL_IP_UNSPEC] = { .strict_start_type = LWTUNNEL_IP_OPTS },
[LWTUNNEL_IP_ID] = { .type = NLA_U64 },
[LWTUNNEL_IP_DST] = { .type = NLA_U32 },
[LWTUNNEL_IP_SRC] = { .type = NLA_U32 },
};
static int ip_tun_parse_opts_geneve(struct nlattr *attr,
- struct ip_tunnel_info *info,
+ struct ip_tunnel_info *info, int opts_len,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[LWTUNNEL_IP_OPT_GENEVE_MAX + 1];
return -EINVAL;
if (info) {
- struct geneve_opt *opt = ip_tunnel_info_opts(info);
+ struct geneve_opt *opt = ip_tunnel_info_opts(info) + opts_len;
memcpy(opt->opt_data, nla_data(attr), data_len);
opt->length = data_len / 4;
}
static int ip_tun_parse_opts_vxlan(struct nlattr *attr,
- struct ip_tunnel_info *info,
+ struct ip_tunnel_info *info, int opts_len,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[LWTUNNEL_IP_OPT_VXLAN_MAX + 1];
return -EINVAL;
if (info) {
- struct vxlan_metadata *md = ip_tunnel_info_opts(info);
+ struct vxlan_metadata *md =
+ ip_tunnel_info_opts(info) + opts_len;
attr = tb[LWTUNNEL_IP_OPT_VXLAN_GBP];
md->gbp = nla_get_u32(attr);
}
static int ip_tun_parse_opts_erspan(struct nlattr *attr,
- struct ip_tunnel_info *info,
+ struct ip_tunnel_info *info, int opts_len,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[LWTUNNEL_IP_OPT_ERSPAN_MAX + 1];
int err;
+ u8 ver;
err = nla_parse_nested(tb, LWTUNNEL_IP_OPT_ERSPAN_MAX, attr,
erspan_opt_policy, extack);
if (!tb[LWTUNNEL_IP_OPT_ERSPAN_VER])
return -EINVAL;
- if (info) {
- struct erspan_metadata *md = ip_tunnel_info_opts(info);
+ ver = nla_get_u8(tb[LWTUNNEL_IP_OPT_ERSPAN_VER]);
+ if (ver == 1) {
+ if (!tb[LWTUNNEL_IP_OPT_ERSPAN_INDEX])
+ return -EINVAL;
+ } else if (ver == 2) {
+ if (!tb[LWTUNNEL_IP_OPT_ERSPAN_DIR] ||
+ !tb[LWTUNNEL_IP_OPT_ERSPAN_HWID])
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
- attr = tb[LWTUNNEL_IP_OPT_ERSPAN_VER];
- md->version = nla_get_u8(attr);
+ if (info) {
+ struct erspan_metadata *md =
+ ip_tunnel_info_opts(info) + opts_len;
- if (md->version == 1 && tb[LWTUNNEL_IP_OPT_ERSPAN_INDEX]) {
+ md->version = ver;
+ if (ver == 1) {
attr = tb[LWTUNNEL_IP_OPT_ERSPAN_INDEX];
md->u.index = nla_get_be32(attr);
- } else if (md->version == 2 && tb[LWTUNNEL_IP_OPT_ERSPAN_DIR] &&
- tb[LWTUNNEL_IP_OPT_ERSPAN_HWID]) {
+ } else {
attr = tb[LWTUNNEL_IP_OPT_ERSPAN_DIR];
md->u.md2.dir = nla_get_u8(attr);
attr = tb[LWTUNNEL_IP_OPT_ERSPAN_HWID];
set_hwid(&md->u.md2, nla_get_u8(attr));
- } else {
- return -EINVAL;
}
info->key.tun_flags |= TUNNEL_ERSPAN_OPT;
static int ip_tun_parse_opts(struct nlattr *attr, struct ip_tunnel_info *info,
struct netlink_ext_ack *extack)
{
- struct nlattr *tb[LWTUNNEL_IP_OPTS_MAX + 1];
- int err;
+ int err, rem, opt_len, opts_len = 0, type = 0;
+ struct nlattr *nla;
if (!attr)
return 0;
- err = nla_parse_nested(tb, LWTUNNEL_IP_OPTS_MAX, attr,
- ip_opts_policy, extack);
+ err = nla_validate(nla_data(attr), nla_len(attr), LWTUNNEL_IP_OPTS_MAX,
+ ip_opts_policy, extack);
if (err)
return err;
- if (tb[LWTUNNEL_IP_OPTS_GENEVE])
- err = ip_tun_parse_opts_geneve(tb[LWTUNNEL_IP_OPTS_GENEVE],
- info, extack);
- else if (tb[LWTUNNEL_IP_OPTS_VXLAN])
- err = ip_tun_parse_opts_vxlan(tb[LWTUNNEL_IP_OPTS_VXLAN],
- info, extack);
- else if (tb[LWTUNNEL_IP_OPTS_ERSPAN])
- err = ip_tun_parse_opts_erspan(tb[LWTUNNEL_IP_OPTS_ERSPAN],
- info, extack);
- else
- err = -EINVAL;
+ nla_for_each_attr(nla, nla_data(attr), nla_len(attr), rem) {
+ switch (nla_type(nla)) {
+ case LWTUNNEL_IP_OPTS_GENEVE:
+ if (type && type != TUNNEL_GENEVE_OPT)
+ return -EINVAL;
+ opt_len = ip_tun_parse_opts_geneve(nla, info, opts_len,
+ extack);
+ if (opt_len < 0)
+ return opt_len;
+ opts_len += opt_len;
+ if (opts_len > IP_TUNNEL_OPTS_MAX)
+ return -EINVAL;
+ type = TUNNEL_GENEVE_OPT;
+ break;
+ case LWTUNNEL_IP_OPTS_VXLAN:
+ if (type)
+ return -EINVAL;
+ opt_len = ip_tun_parse_opts_vxlan(nla, info, opts_len,
+ extack);
+ if (opt_len < 0)
+ return opt_len;
+ opts_len += opt_len;
+ type = TUNNEL_VXLAN_OPT;
+ break;
+ case LWTUNNEL_IP_OPTS_ERSPAN:
+ if (type)
+ return -EINVAL;
+ opt_len = ip_tun_parse_opts_erspan(nla, info, opts_len,
+ extack);
+ if (opt_len < 0)
+ return opt_len;
+ opts_len += opt_len;
+ type = TUNNEL_ERSPAN_OPT;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
- return err;
+ return opts_len;
}
static int ip_tun_get_optlen(struct nlattr *attr,
tun_info->key.tos = nla_get_u8(tb[LWTUNNEL_IP_TOS]);
if (tb[LWTUNNEL_IP_FLAGS])
- tun_info->key.tun_flags |= nla_get_be16(tb[LWTUNNEL_IP_FLAGS]);
+ tun_info->key.tun_flags |=
+ (nla_get_be16(tb[LWTUNNEL_IP_FLAGS]) &
+ ~TUNNEL_OPTIONS_PRESENT);
tun_info->mode = IP_TUNNEL_INFO_TX;
tun_info->options_len = opt_len;
{
struct geneve_opt *opt;
struct nlattr *nest;
+ int offset = 0;
nest = nla_nest_start_noflag(skb, LWTUNNEL_IP_OPTS_GENEVE);
if (!nest)
return -ENOMEM;
- opt = ip_tunnel_info_opts(tun_info);
- if (nla_put_be16(skb, LWTUNNEL_IP_OPT_GENEVE_CLASS, opt->opt_class) ||
- nla_put_u8(skb, LWTUNNEL_IP_OPT_GENEVE_TYPE, opt->type) ||
- nla_put(skb, LWTUNNEL_IP_OPT_GENEVE_DATA, opt->length * 4,
- opt->opt_data)) {
- nla_nest_cancel(skb, nest);
- return -ENOMEM;
+ while (tun_info->options_len > offset) {
+ opt = ip_tunnel_info_opts(tun_info) + offset;
+ if (nla_put_be16(skb, LWTUNNEL_IP_OPT_GENEVE_CLASS,
+ opt->opt_class) ||
+ nla_put_u8(skb, LWTUNNEL_IP_OPT_GENEVE_TYPE, opt->type) ||
+ nla_put(skb, LWTUNNEL_IP_OPT_GENEVE_DATA, opt->length * 4,
+ opt->opt_data)) {
+ nla_nest_cancel(skb, nest);
+ return -ENOMEM;
+ }
+ offset += sizeof(*opt) + opt->length * 4;
}
nla_nest_end(skb, nest);
return -ENOMEM;
md = ip_tunnel_info_opts(tun_info);
- if (nla_put_u32(skb, LWTUNNEL_IP_OPT_ERSPAN_VER, md->version))
+ if (nla_put_u8(skb, LWTUNNEL_IP_OPT_ERSPAN_VER, md->version))
goto err;
if (md->version == 1 &&
struct nlattr *nest;
int err = 0;
- if (!(tun_info->key.tun_flags &
- (TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT)))
+ if (!(tun_info->key.tun_flags & TUNNEL_OPTIONS_PRESENT))
return 0;
nest = nla_nest_start_noflag(skb, type);
{
int opt_len;
- if (!(info->key.tun_flags &
- (TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT)))
+ if (!(info->key.tun_flags & TUNNEL_OPTIONS_PRESENT))
return 0;
opt_len = nla_total_size(0); /* LWTUNNEL_IP_OPTS */
if (info->key.tun_flags & TUNNEL_GENEVE_OPT) {
- struct geneve_opt *opt = ip_tunnel_info_opts(info);
-
- opt_len += nla_total_size(0) /* LWTUNNEL_IP_OPTS_GENEVE */
- + nla_total_size(2) /* OPT_GENEVE_CLASS */
- + nla_total_size(1) /* OPT_GENEVE_TYPE */
- + nla_total_size(opt->length * 4);
- /* OPT_GENEVE_DATA */
+ struct geneve_opt *opt;
+ int offset = 0;
+
+ opt_len += nla_total_size(0); /* LWTUNNEL_IP_OPTS_GENEVE */
+ while (info->options_len > offset) {
+ opt = ip_tunnel_info_opts(info) + offset;
+ opt_len += nla_total_size(2) /* OPT_GENEVE_CLASS */
+ + nla_total_size(1) /* OPT_GENEVE_TYPE */
+ + nla_total_size(opt->length * 4);
+ /* OPT_GENEVE_DATA */
+ offset += sizeof(*opt) + opt->length * 4;
+ }
} else if (info->key.tun_flags & TUNNEL_VXLAN_OPT) {
opt_len += nla_total_size(0) /* LWTUNNEL_IP_OPTS_VXLAN */
+ nla_total_size(4); /* OPT_VXLAN_GBP */
} else if (info->key.tun_flags & TUNNEL_ERSPAN_OPT) {
+ struct erspan_metadata *md = ip_tunnel_info_opts(info);
+
opt_len += nla_total_size(0) /* LWTUNNEL_IP_OPTS_ERSPAN */
+ nla_total_size(1) /* OPT_ERSPAN_VER */
- + nla_total_size(4); /* OPT_ERSPAN_INDEX/DIR/HWID */
+ + (md->version == 1 ? nla_total_size(4)
+ /* OPT_ERSPAN_INDEX (v1) */
+ : nla_total_size(1) +
+ nla_total_size(1));
+ /* OPT_ERSPAN_DIR + HWID (v2) */
}
return opt_len;
};
static const struct nla_policy ip6_tun_policy[LWTUNNEL_IP6_MAX + 1] = {
+ [LWTUNNEL_IP6_UNSPEC] = { .strict_start_type = LWTUNNEL_IP6_OPTS },
[LWTUNNEL_IP6_ID] = { .type = NLA_U64 },
[LWTUNNEL_IP6_DST] = { .len = sizeof(struct in6_addr) },
[LWTUNNEL_IP6_SRC] = { .len = sizeof(struct in6_addr) },
[LWTUNNEL_IP6_HOPLIMIT] = { .type = NLA_U8 },
[LWTUNNEL_IP6_TC] = { .type = NLA_U8 },
[LWTUNNEL_IP6_FLAGS] = { .type = NLA_U16 },
+ [LWTUNNEL_IP6_OPTS] = { .type = NLA_NESTED },
};
static int ip6_tun_build_state(struct nlattr *attr,
tun_info->key.tos = nla_get_u8(tb[LWTUNNEL_IP6_TC]);
if (tb[LWTUNNEL_IP6_FLAGS])
- tun_info->key.tun_flags |= nla_get_be16(tb[LWTUNNEL_IP6_FLAGS]);
+ tun_info->key.tun_flags |=
+ (nla_get_be16(tb[LWTUNNEL_IP6_FLAGS]) &
+ ~TUNNEL_OPTIONS_PRESENT);
tun_info->mode = IP_TUNNEL_INFO_TX | IP_TUNNEL_INFO_IPV6;
tun_info->options_len = opt_len;
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