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tc: Add vxlan encap action with gbp option offload.

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Add TC offload support for vxlan encap with gbp option.

Reviewed-by: Gavi Teitz <gavi@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Gavin Li <gavinl@nvidia.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
This commit is contained in:
Gavin Li 2023-06-27 13:48:12 +03:00 committed by Eelco Chaudron
parent 256c1e5819
commit a2a3f1983f
8 changed files with 143 additions and 17 deletions
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2
NEWS
View File

@ -44,6 +44,8 @@ Post-v3.1.0
* IP and L4 checksum offload support is now enabled by default for
interfaces that support it. See the 'status' column in the 'interface'
table to check the status.
- Linux TC offload:
* Add support for offloading VXLAN tunnels with the GBP extensions.
v3.1.0 - 16 Feb 2023

7
acinclude.m4
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@ -191,6 +191,13 @@ AC_DEFUN([OVS_CHECK_LINUX_TC], [
[AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_TTL], [1],
[Define to 1 if TCA_TUNNEL_KEY_ENC_TTL is available.])])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([#include <linux/tc_act/tc_tunnel_key.h>], [
int x = TCA_TUNNEL_KEY_ENC_OPTS_VXLAN;
])],
[AC_DEFINE([HAVE_TCA_TUNNEL_KEY_ENC_OPTS_VXLAN], [1],
[Define to 1 if TCA_TUNNEL_KEY_ENC_OPTS_VXLAN is available.])])
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([#include <linux/tc_act/tc_pedit.h>], [
int x = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;

17
include/linux/tc_act/tc_tunnel_key.h
View File

@ -1,7 +1,7 @@
#ifndef __LINUX_TC_ACT_TC_TUNNEL_KEY_WRAPPER_H
#define __LINUX_TC_ACT_TC_TUNNEL_KEY_WRAPPER_H 1
#if defined(__KERNEL__) || defined(HAVE_TCA_TUNNEL_KEY_ENC_TTL)
#if defined(__KERNEL__) || defined(HAVE_TCA_TUNNEL_KEY_ENC_OPTS_VXLAN)
#include_next <linux/tc_act/tc_tunnel_key.h>
#else
@ -53,6 +53,10 @@ enum {
* TCA_TUNNEL_KEY_ENC_OPTS_GENEVE
* attributes
*/
TCA_TUNNEL_KEY_ENC_OPTS_VXLAN, /* Nested
* TCA_TUNNEL_KEY_ENC_OPTS_VXLAN
* attributes
*/
__TCA_TUNNEL_KEY_ENC_OPTS_MAX,
};
@ -70,6 +74,15 @@ enum {
#define TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX \
(__TCA_TUNNEL_KEY_ENC_OPT_GENEVE_MAX - 1)
#endif /* __KERNEL__ || HAVE_TCA_TUNNEL_KEY_ENC_TTL */
enum {
TCA_TUNNEL_KEY_ENC_OPT_VXLAN_UNSPEC,
TCA_TUNNEL_KEY_ENC_OPT_VXLAN_GBP, /* u32 */
__TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX,
};
#define TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX \
(__TCA_TUNNEL_KEY_ENC_OPT_VXLAN_MAX - 1)
#endif /* __KERNEL__ || HAVE_TCA_TUNNEL_KEY_ENC_OPTS_VXLAN */
#endif /* __LINUX_TC_ACT_TC_TUNNEL_KEY_WRAPPER_H */

30
lib/netdev-offload-tc.c
View File

@ -668,6 +668,23 @@ static void parse_tc_flower_geneve_opts(struct tc_action *action,
nl_msg_end_nested(buf, geneve_off);
}
static void
parse_tc_flower_vxlan_tun_opts(struct tc_action *action, struct ofpbuf *buf)
{
size_t gbp_off;
uint32_t gbp_raw;
if (!action->encap.gbp.id_present) {
return;
}
gbp_off = nl_msg_start_nested(buf, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
gbp_raw = odp_encode_gbp_raw(action->encap.gbp.flags,
action->encap.gbp.id);
nl_msg_put_u32(buf, OVS_VXLAN_EXT_GBP, gbp_raw);
nl_msg_end_nested(buf, gbp_off);
}
static void
flower_tun_opt_to_match(struct match *match, struct tc_flower *flower)
{
@ -863,7 +880,7 @@ parse_tc_flower_to_actions__(struct tc_flower *flower, struct ofpbuf *buf,
if (!action->encap.no_csum) {
nl_msg_put_flag(buf, OVS_TUNNEL_KEY_ATTR_CSUM);
}
parse_tc_flower_vxlan_tun_opts(action, buf);
parse_tc_flower_geneve_opts(action, buf);
nl_msg_end_nested(buf, tunnel_offset);
nl_msg_end_nested(buf, set_offset);
@ -1552,6 +1569,7 @@ parse_put_flow_set_action(struct tc_flower *flower, struct tc_action *action,
action->type = TC_ACT_ENCAP;
action->encap.id_present = false;
action->encap.gbp.id_present = false;
action->encap.no_csum = 1;
flower->action_count++;
NL_ATTR_FOR_EACH_UNSAFE(tun_attr, tun_left, tunnel, tunnel_len) {
@ -1613,6 +1631,16 @@ parse_put_flow_set_action(struct tc_flower *flower, struct tc_action *action,
action->encap.data.present.len = nl_attr_get_size(tun_attr);
}
break;
case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: {
if (odp_vxlan_tun_opts_from_attr(tun_attr,
&action->encap.gbp.id,
&action->encap.gbp.flags,
&action->encap.gbp.id_present)) {
VLOG_ERR_RL(&rl, "error parsing VXLAN options");
return EINVAL;
}
}
break;
default:
VLOG_DBG_RL(&rl, "unsupported tunnel key attribute %d",
nl_attr_type(tun_attr));

42
lib/odp-util.c
View File

@ -3149,22 +3149,12 @@ odp_tun_key_from_attr__(const struct nlattr *attr, bool is_mask,
tun->flags |= FLOW_TNL_F_OAM;
break;
case OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS: {
static const struct nl_policy vxlan_opts_policy[] = {
[OVS_VXLAN_EXT_GBP] = { .type = NL_A_U32 },
};
struct nlattr *ext[ARRAY_SIZE(vxlan_opts_policy)];
if (!nl_parse_nested(a, vxlan_opts_policy, ext, ARRAY_SIZE(ext))) {
if (odp_vxlan_tun_opts_from_attr(a, &tun->gbp_id,
&tun->gbp_flags,
NULL)) {
odp_parse_error(&rl, errorp, "error parsing VXLAN options");
return ODP_FIT_ERROR;
}
if (ext[OVS_VXLAN_EXT_GBP]) {
uint32_t gbp = nl_attr_get_u32(ext[OVS_VXLAN_EXT_GBP]);
odp_decode_gbp_raw(gbp, &tun->gbp_id, &tun->gbp_flags);
}
break;
}
case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
@ -8844,3 +8834,29 @@ commit_odp_actions(const struct flow *flow, struct flow *base,
return slow1 ? slow1 : slow2;
}
int
odp_vxlan_tun_opts_from_attr(const struct nlattr *tun_attr, ovs_be16 *id,
uint8_t *flags, bool *id_present)
{
static const struct nl_policy vxlan_opts_policy[] = {
[OVS_VXLAN_EXT_GBP] = { .type = NL_A_U32 },
};
struct nlattr *ext[ARRAY_SIZE(vxlan_opts_policy)];
if (!nl_parse_nested(tun_attr, vxlan_opts_policy, ext, ARRAY_SIZE(ext))) {
return EINVAL;
}
if (ext[OVS_VXLAN_EXT_GBP]) {
uint32_t gbp_raw = nl_attr_get_u32(ext[OVS_VXLAN_EXT_GBP]);
odp_decode_gbp_raw(gbp_raw, id, flags);
}
if (id_present) {
*id_present = !!ext[OVS_VXLAN_EXT_GBP];
}
return 0;
}

3
lib/odp-util.h
View File

@ -292,6 +292,9 @@ enum slow_path_reason commit_odp_actions(const struct flow *,
bool pending_decap,
struct ofpbuf *encap_data);
int odp_vxlan_tun_opts_from_attr(const struct nlattr *tun_attr, ovs_be16 *id,
uint8_t *flags, bool *id_present);
/* ofproto-dpif interface.
*
* The following types and functions are logically part of ofproto-dpif.

58
lib/tc.c
View File

@ -1290,6 +1290,35 @@ nl_parse_act_geneve_opts(const struct nlattr *in_nlattr,
return 0;
}
static int
nl_parse_act_vxlan_opts(struct nlattr *in_nlattr, struct tc_action *action)
{
const struct ofpbuf *msg;
struct nlattr *nla;
struct ofpbuf buf;
size_t left;
nl_attr_get_nested(in_nlattr, &buf);
msg = &buf;
NL_ATTR_FOR_EACH (nla, left, ofpbuf_at(msg, 0, 0), msg->size) {
uint16_t type = nl_attr_type(nla);
int32_t gbp_raw;
switch (type) {
case TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP:
gbp_raw = nl_attr_get_u32(nla);
odp_decode_gbp_raw(gbp_raw, &action->encap.gbp.id,
&action->encap.gbp.flags);
action->encap.gbp.id_present = true;
break;
}
}
return 0;
}
static int
nl_parse_act_tunnel_opts(struct nlattr *options, struct tc_action *action)
{
@ -1314,7 +1343,12 @@ nl_parse_act_tunnel_opts(struct nlattr *options, struct tc_action *action)
if (err) {
return err;
}
break;
case TCA_TUNNEL_KEY_ENC_OPTS_VXLAN:
err = nl_parse_act_vxlan_opts(nla, action);
if (err) {
return err;
}
break;
}
}
@ -2640,6 +2674,27 @@ nl_msg_put_act_tunnel_geneve_option(struct ofpbuf *request,
nl_msg_end_nested(request, outer);
}
static void
nl_msg_put_act_tunnel_vxlan_opts(struct ofpbuf *request,
struct tc_action_encap *encap)
{
size_t outer, inner;
uint32_t gbp_raw;
if (!encap->gbp.id_present) {
return;
}
gbp_raw = odp_encode_gbp_raw(encap->gbp.flags,
encap->gbp.id);
outer = nl_msg_start_nested_with_flag(request, TCA_TUNNEL_KEY_ENC_OPTS);
inner = nl_msg_start_nested_with_flag(request,
TCA_TUNNEL_KEY_ENC_OPTS_VXLAN);
nl_msg_put_u32(request, TCA_TUNNEL_KEY_ENC_OPT_VXLAN_GBP, gbp_raw);
nl_msg_end_nested(request, inner);
nl_msg_end_nested(request, outer);
}
static void
nl_msg_put_act_tunnel_key_set(struct ofpbuf *request,
struct tc_action_encap *encap,
@ -2680,6 +2735,7 @@ nl_msg_put_act_tunnel_key_set(struct ofpbuf *request,
nl_msg_put_be16(request, TCA_TUNNEL_KEY_ENC_DST_PORT,
encap->tp_dst);
}
nl_msg_put_act_tunnel_vxlan_opts(request, encap);
nl_msg_put_act_tunnel_geneve_option(request, &encap->data);
nl_msg_put_u8(request, TCA_TUNNEL_KEY_NO_CSUM, encap->no_csum);
}

1
lib/tc.h
View File

@ -227,6 +227,7 @@ struct tc_action_encap {
struct in6_addr ipv6_dst;
} ipv6;
struct tun_metadata data;
struct tc_tunnel_gbp gbp;
};
struct tc_action {