Allow to set tos and ttl for the tunnel.
For example, here's encap rule that sets tos to the tunnel:
tc filter add dev eth0_0 protocol ip parent ffff: prio 10 flower \
src_mac e4:11:22:33:44:50 dst_mac e4:11:22:33:44:70 \
action tunnel_key set src_ip 192.168.10.1 dst_ip 192.168.10.2 id 100
dst_port 4789 tos 0x30 \
action mirred egress redirect dev vxlan_sys_4789
Signed-off-by: Or Gerlitz <ogerl...@mellanox.com>
Reviewed-by: Roi Dayan <r...@mellanox.com>
Acked-by: Jiri Pirko <j...@mellanox.com>
---
include/uapi/linux/tc_act/tc_tunnel_key.h | 2 +
man/man8/tc-tunnel_key.8 | 8 ++++
tc/m_tunnel_key.c | 53 +++++++++++++++++++++++++++++
3 files changed, 63 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 e284fec..be384d6 100644
--- a/include/uapi/linux/tc_act/tc_tunnel_key.h
+++ b/include/uapi/linux/tc_act/tc_tunnel_key.h
@@ -39,6 +39,8 @@ enum {
TCA_TUNNEL_KEY_ENC_OPTS, /* Nested TCA_TUNNEL_KEY_ENC_OPTS_
* attributes
*/
+ TCA_TUNNEL_KEY_ENC_TOS, /* u8 */
+ TCA_TUNNEL_KEY_ENC_TTL, /* u8 */
__TCA_TUNNEL_KEY_MAX,
};
diff --git a/man/man8/tc-tunnel_key.8 b/man/man8/tc-tunnel_key.8
index 7d4b30e..1e09362 100644
--- a/man/man8/tc-tunnel_key.8
+++ b/man/man8/tc-tunnel_key.8
@@ -16,6 +16,8 @@ tunnel_key - Tunnel metadata manipulation
.IR ADDRESS
.BI id " KEY_ID"
.BI dst_port " UDP_PORT"
+.BI tos " TOS"
+.BI ttl " TTL"
.RB "[ " csum " | " nocsum " ]"
.SH DESCRIPTION
@@ -89,6 +91,12 @@ is specified in the form CLASS:TYPE:DATA, where CLASS is
represented as a
variable length hexadecimal value. Additionally multiple options may be
listed using a comma delimiter.
.TP
+.B tos
+Outer header TOS
+.TP
+.B ttl
+Outer header TTL
+.TP
.RB [ no ] csum
Controlls outer UDP checksum. When set to
.B csum
diff --git a/tc/m_tunnel_key.c b/tc/m_tunnel_key.c
index 5a0e3fc..e9e71e4 100644
--- a/tc/m_tunnel_key.c
+++ b/tc/m_tunnel_key.c
@@ -190,6 +190,22 @@ static int tunnel_key_parse_geneve_opts(char *str, struct
nlmsghdr *n)
return 0;
}
+static int tunnel_key_parse_tos_ttl(char *str, int type, struct nlmsghdr *n)
+{
+ int ret;
+ __u8 val;
+
+ ret = get_u8(&val, str, 10);
+ if (ret)
+ ret = get_u8(&val, str, 16);
+ if (ret)
+ return -1;
+
+ addattr8(n, MAX_MSG, type, val);
+
+ return 0;
+}
+
static int parse_tunnel_key(struct action_util *a, int *argc_p, char ***argv_p,
int tca_id, struct nlmsghdr *n)
{
@@ -273,6 +289,22 @@ static int parse_tunnel_key(struct action_util *a, int
*argc_p, char ***argv_p,
fprintf(stderr, "Illegal \"geneve_opts\"\n");
return -1;
}
+ } else if (matches(*argv, "tos") == 0) {
+ NEXT_ARG();
+ ret = tunnel_key_parse_tos_ttl(*argv,
+ TCA_TUNNEL_KEY_ENC_TOS,
n);
+ if (ret < 0) {
+ fprintf(stderr, "Illegal \"tos\"\n");
+ return -1;
+ }
+ } else if (matches(*argv, "ttl") == 0) {
+ NEXT_ARG();
+ ret = tunnel_key_parse_tos_ttl(*argv,
+ TCA_TUNNEL_KEY_ENC_TTL,
n);
+ if (ret < 0) {
+ fprintf(stderr, "Illegal \"ttl\"\n");
+ return -1;
+ }
} else if (matches(*argv, "csum") == 0) {
csum = 1;
} else if (matches(*argv, "nocsum") == 0) {
@@ -435,6 +467,23 @@ static void tunnel_key_print_key_opt(const char *name,
struct rtattr *attr)
tb[TCA_TUNNEL_KEY_ENC_OPTS_GENEVE]);
}
+static void tunnel_key_print_tos_ttl(FILE *f, char *name,
+ struct rtattr *attr)
+{
+ if (!attr)
+ return;
+
+ if (matches(name, "tos") == 0 && rta_getattr_u8(attr) != 0) {
+ print_string(PRINT_FP, NULL, "%s", _SL_);
+ print_uint(PRINT_ANY, "tos", "\ttos 0x%x",
+ rta_getattr_u8(attr));
+ } else if (matches(name, "ttl") == 0 && rta_getattr_u8(attr) != 0) {
+ print_string(PRINT_FP, NULL, "%s", _SL_);
+ print_uint(PRINT_ANY, "ttl", "\tttl %u",
+ rta_getattr_u8(attr));
+ }
+}
+
static int print_tunnel_key(struct action_util *au, FILE *f, struct rtattr
*arg)
{
struct rtattr *tb[TCA_TUNNEL_KEY_MAX + 1];
@@ -476,6 +525,10 @@ static int print_tunnel_key(struct action_util *au, FILE
*f, struct rtattr *arg)
tb[TCA_TUNNEL_KEY_ENC_OPTS]);
tunnel_key_print_flag(f, "nocsum", "csum",
tb[TCA_TUNNEL_KEY_NO_CSUM]);
+ tunnel_key_print_tos_ttl(f, "tos",
+ tb[TCA_TUNNEL_KEY_ENC_TOS]);
+ tunnel_key_print_tos_ttl(f, "ttl",
+ tb[TCA_TUNNEL_KEY_ENC_TTL]);
break;
}
print_action_control(f, " ", parm->action, "");
--
1.7.1
