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-rw-r--r--include/uapi/linux/tc_act/tc_tunnel_key.h16
-rw-r--r--net/sched/act_tunnel_key.c118
2 files changed, 134 insertions, 0 deletions
diff --git a/include/uapi/linux/tc_act/tc_tunnel_key.h b/include/uapi/linux/tc_act/tc_tunnel_key.h
index f302c2a76953..3f10dc4e7a4b 100644
--- a/include/uapi/linux/tc_act/tc_tunnel_key.h
+++ b/include/uapi/linux/tc_act/tc_tunnel_key.h
@@ -54,6 +54,10 @@ enum {
* TCA_TUNNEL_KEY_ENC_OPTS_
* attributes
*/
+ TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN, /* Nested
+ * TCA_TUNNEL_KEY_ENC_OPTS_
+ * attributes
+ */
__TCA_TUNNEL_KEY_ENC_OPTS_MAX,
};
@@ -80,4 +84,16 @@ enum {
#define TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX \
(__TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX - 1)
+enum {
+ TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_UNSPEC,
+ TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_VER, /* u8 */
+ TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_INDEX, /* be32 */
+ TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_DIR, /* u8 */
+ TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_HWID, /* u8 */
+ __TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX,
+};
+
+#define TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX \
+ (__TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX - 1)
+
#endif
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index ff0909b57511..30b58256d3da 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -11,6 +11,7 @@
#include <linux/rtnetlink.h>
#include <net/geneve.h>
#include <net/vxlan.h>
+#include <net/erspan.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <net/dst.h>
@@ -58,6 +59,7 @@ enc_opts_policy[TCA_TUNNEL_KEY_ENC_OPTS_MAX + 1] = {
.strict_start_type = TCA_TUNNEL_KEY_ENC_OPTS_VXLAN },
[TCA_TUNNEL_KEY_ENC_OPTS_GENEVE] = { .type = NLA_NESTED },
[TCA_TUNNEL_KEY_ENC_OPTS_VXLAN] = { .type = NLA_NESTED },
+ [TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN] = { .type = NLA_NESTED },
};
static const struct nla_policy
@@ -73,6 +75,14 @@ vxlan_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX + 1] = {
[TCA_TUNNEL_KEY_ENC_OPT_VXLAN_GBP] = { .type = NLA_U32 },
};
+static const struct nla_policy
+erspan_opt_policy[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX + 1] = {
+ [TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_VER] = { .type = NLA_U8 },
+ [TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_INDEX] = { .type = NLA_U32 },
+ [TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_DIR] = { .type = NLA_U8 },
+ [TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_HWID] = { .type = NLA_U8 },
+};
+
static int
tunnel_key_copy_geneve_opt(const struct nlattr *nla, void *dst, int dst_len,
struct netlink_ext_ack *extack)
@@ -151,6 +161,59 @@ tunnel_key_copy_vxlan_opt(const struct nlattr *nla, void *dst, int dst_len,
return sizeof(struct vxlan_metadata);
}
+static int
+tunnel_key_copy_erspan_opt(const struct nlattr *nla, void *dst, int dst_len,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX + 1];
+ int err;
+ u8 ver;
+
+ err = nla_parse_nested(tb, TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_MAX, nla,
+ erspan_opt_policy, extack);
+ if (err < 0)
+ return err;
+
+ if (!tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_VER]) {
+ NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option ver");
+ return -EINVAL;
+ }
+
+ ver = nla_get_u8(tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_VER]);
+ if (ver == 1) {
+ if (!tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_INDEX]) {
+ NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option index");
+ return -EINVAL;
+ }
+ } else if (ver == 2) {
+ if (!tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_DIR] ||
+ !tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_HWID]) {
+ NL_SET_ERR_MSG(extack, "Missing tunnel key erspan option dir or hwid");
+ return -EINVAL;
+ }
+ } else {
+ NL_SET_ERR_MSG(extack, "Tunnel key erspan option ver is incorrect");
+ return -EINVAL;
+ }
+
+ if (dst) {
+ struct erspan_metadata *md = dst;
+
+ md->version = ver;
+ if (ver == 1) {
+ nla = tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_INDEX];
+ md->u.index = nla_get_be32(nla);
+ } else {
+ nla = tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_DIR];
+ md->u.md2.dir = nla_get_u8(nla);
+ nla = tb[TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_HWID];
+ set_hwid(&md->u.md2, nla_get_u8(nla));
+ }
+ }
+
+ return sizeof(struct erspan_metadata);
+}
+
static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
int dst_len, struct netlink_ext_ack *extack)
{
@@ -192,6 +255,18 @@ static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
opts_len += opt_len;
type = TUNNEL_VXLAN_OPT;
break;
+ case TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN:
+ if (type) {
+ NL_SET_ERR_MSG(extack, "Duplicate type for erspan options");
+ return -EINVAL;
+ }
+ opt_len = tunnel_key_copy_erspan_opt(attr, dst,
+ dst_len, extack);
+ if (opt_len < 0)
+ return opt_len;
+ opts_len += opt_len;
+ type = TUNNEL_ERSPAN_OPT;
+ break;
}
}
@@ -235,6 +310,14 @@ static int tunnel_key_opts_set(struct nlattr *nla, struct ip_tunnel_info *info,
#else
return -EAFNOSUPPORT;
#endif
+ case TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN:
+#if IS_ENABLED(CONFIG_INET)
+ info->key.tun_flags |= TUNNEL_ERSPAN_OPT;
+ return tunnel_key_copy_opts(nla, ip_tunnel_info_opts(info),
+ opts_len, extack);
+#else
+ return -EAFNOSUPPORT;
+#endif
default:
NL_SET_ERR_MSG(extack, "Cannot set tunnel options for unknown tunnel type");
return -EINVAL;
@@ -530,6 +613,37 @@ static int tunnel_key_vxlan_opts_dump(struct sk_buff *skb,
return 0;
}
+static int tunnel_key_erspan_opts_dump(struct sk_buff *skb,
+ const struct ip_tunnel_info *info)
+{
+ struct erspan_metadata *md = (struct erspan_metadata *)(info + 1);
+ struct nlattr *start;
+
+ start = nla_nest_start_noflag(skb, TCA_TUNNEL_KEY_ENC_OPTS_ERSPAN);
+ if (!start)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_VER, md->version))
+ goto err;
+
+ if (md->version == 1 &&
+ nla_put_be32(skb, TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_INDEX, md->u.index))
+ goto err;
+
+ if (md->version == 2 &&
+ (nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_DIR,
+ md->u.md2.dir) ||
+ nla_put_u8(skb, TCA_TUNNEL_KEY_ENC_OPT_ERSPAN_HWID,
+ get_hwid(&md->u.md2))))
+ goto err;
+
+ nla_nest_end(skb, start);
+ return 0;
+err:
+ nla_nest_cancel(skb, start);
+ return -EMSGSIZE;
+}
+
static int tunnel_key_opts_dump(struct sk_buff *skb,
const struct ip_tunnel_info *info)
{
@@ -551,6 +665,10 @@ static int tunnel_key_opts_dump(struct sk_buff *skb,
err = tunnel_key_vxlan_opts_dump(skb, info);
if (err)
goto err_out;
+ } else if (info->key.tun_flags & TUNNEL_ERSPAN_OPT) {
+ err = tunnel_key_erspan_opts_dump(skb, info);
+ if (err)
+ goto err_out;
} else {
err_out:
nla_nest_cancel(skb, start);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.