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net/sfc: refine pattern of group flows in tunnel offload

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By design, in a GROUP flow, outer match criteria go to "ENC" fields
of the action rule match specification. The current HW/FW hasn't
got support for these fields (except the VXLAN VNI) yet.

As a workaround, start parsing the pattern from the tunnel item.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
This commit is contained in:
Ivan Malov 2021-10-13 16:15:13 +03:00 committed by Ferruh Yigit
parent 9df2d8f5cc
commit 0ead098383
2 changed files with 27 additions and 11 deletions
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37
drivers/net/sfc/sfc_mae.c
View File

@ -2121,14 +2121,21 @@ sfc_mae_rule_parse_item_tunnel(const struct rte_flow_item *item,
const uint8_t *mask = NULL;
int rc;
/*
* We're about to start processing inner frame items.
* Process pattern data that has been deferred so far
* and reset pattern data storage.
*/
rc = sfc_mae_rule_process_pattern_data(ctx_mae, error);
if (rc != 0)
return rc;
if (ctx_mae->ft_rule_type == SFC_FT_RULE_GROUP) {
/*
* As a workaround, pattern processing has started from
* this (tunnel) item. No pattern data to process yet.
*/
} else {
/*
* We're about to start processing inner frame items.
* Process pattern data that has been deferred so far
* and reset pattern data storage.
*/
rc = sfc_mae_rule_process_pattern_data(ctx_mae, error);
if (rc != 0)
return rc;
}
memset(&ctx_mae->pattern_data, 0, sizeof(ctx_mae->pattern_data));
@ -2447,10 +2454,10 @@ sfc_mae_rule_preparse_item_mark(const struct rte_flow_item_mark *spec,
static int
sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa,
const struct rte_flow_item pattern[],
struct sfc_mae_parse_ctx *ctx,
struct rte_flow_error *error)
{
const struct rte_flow_item *pattern = ctx->pattern;
struct sfc_mae *mae = &sa->mae;
uint8_t recirc_id = 0;
int rc;
@ -2525,6 +2532,13 @@ sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa,
RTE_FLOW_ERROR_TYPE_ITEM,
pattern, "tunnel offload: GROUP: tunnel type mismatch");
}
/*
* The HW/FW hasn't got support for the use of "ENC" fields in
* action rules (except the VNET_ID one) yet. As a workaround,
* start parsing the pattern from the tunnel item.
*/
ctx->pattern = pattern;
break;
default:
SFC_ASSERT(B_FALSE);
@ -2669,11 +2683,12 @@ sfc_mae_rule_parse_pattern(struct sfc_adapter *sa,
ctx_mae.encap_type = EFX_TUNNEL_PROTOCOL_NONE;
ctx_mae.match_spec = ctx_mae.match_spec_action;
ctx_mae.field_ids_remap = field_ids_no_remap;
ctx_mae.pattern = pattern;
ctx.type = SFC_FLOW_PARSE_CTX_MAE;
ctx.mae = &ctx_mae;
rc = sfc_mae_rule_encap_parse_init(sa, pattern, &ctx_mae, error);
rc = sfc_mae_rule_encap_parse_init(sa, &ctx_mae, error);
if (rc != 0)
goto fail_encap_parse_init;
@ -2685,7 +2700,7 @@ sfc_mae_rule_parse_pattern(struct sfc_adapter *sa,
spec->ft = ctx_mae.ft;
rc = sfc_flow_parse_pattern(sa, sfc_flow_items, RTE_DIM(sfc_flow_items),
pattern, &ctx, error);
ctx_mae.pattern, &ctx, error);
if (rc != 0)
goto fail_parse_pattern;

1
drivers/net/sfc/sfc_mae.h
View File

@ -332,6 +332,7 @@ struct sfc_mae_parse_ctx {
enum sfc_flow_tunnel_rule_type ft_rule_type;
struct sfc_mae_pattern_data pattern_data;
efx_tunnel_protocol_t encap_type;
const struct rte_flow_item *pattern;
unsigned int priority;
struct sfc_flow_tunnel *ft;
};