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tc/act_tunnel_key: Enable setup of tos and ttl

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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 <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Or Gerlitz 2018-07-19 14:02:14 +03:00 committed by David Ahern
parent 204db84eb8
commit 9f89b0cc0e
2 changed files with 61 additions and 0 deletions
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8
man/man8/tc-tunnel_key.8
View File

@ -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

53
tc/m_tunnel_key.c
View File

@ -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, "");