From: Viacheslav Galaktionov <viacheslav.galaktio...@oktetlabs.ru>
These items allow the user to avoid having to set the EtherType field in an
ETH item to match PPPoE traffic. Using a PPPoED (PPPoE discovery) or PPPoES
(PPPoE session) item will lead to EtherType filter being set up with
a corresponding value. If an ETH item provides its own EtherType value,
it will be checked for correctness.
Matching on PPPoE fields is not supported.
Signed-off-by: Viacheslav Galaktionov <viacheslav.galaktio...@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybche...@oktetlabs.ru>
Reviewed-by: Andy Moreton <amore...@xilinx.com>
---
drivers/net/sfc/sfc_flow.c | 72 ++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/drivers/net/sfc/sfc_flow.c b/drivers/net/sfc/sfc_flow.c
index ab1d2cc595..5fea57250c 100644
--- a/drivers/net/sfc/sfc_flow.c
+++ b/drivers/net/sfc/sfc_flow.c
@@ -96,6 +96,7 @@ static sfc_flow_item_parse sfc_flow_parse_udp;
static sfc_flow_item_parse sfc_flow_parse_vxlan;
static sfc_flow_item_parse sfc_flow_parse_geneve;
static sfc_flow_item_parse sfc_flow_parse_nvgre;
+static sfc_flow_item_parse sfc_flow_parse_pppoex;
typedef int (sfc_flow_spec_set_vals)(struct sfc_flow_spec *spec,
unsigned int filters_count_for_one_val,
@@ -1063,6 +1064,63 @@ sfc_flow_parse_nvgre(const struct rte_flow_item *item,
return rc;
}
+/**
+ * Convert PPPoEx item to EFX filter specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * Matching on PPPoEx fields is not supported.
+ * This item can only be used to set or validate the EtherType filter.
+ * Only zero masks are allowed.
+ * Ranging is not supported.
+ * @param efx_spec[in, out]
+ * EFX filter specification to update.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_parse_pppoex(const struct rte_flow_item *item,
+ struct sfc_flow_parse_ctx *parse_ctx,
+ struct rte_flow_error *error)
+{
+ efx_filter_spec_t *efx_spec = parse_ctx->filter;
+ const struct rte_flow_item_pppoe *spec = NULL;
+ const struct rte_flow_item_pppoe *mask = NULL;
+ const struct rte_flow_item_pppoe supp_mask = {};
+ const struct rte_flow_item_pppoe def_mask = {};
+ uint16_t ether_type;
+ int rc;
+
+ rc = sfc_flow_parse_init(item,
+ (const void **)&spec,
+ (const void **)&mask,
+ &supp_mask,
+ &def_mask,
+ sizeof(struct rte_flow_item_pppoe),
+ error);
+ if (rc != 0)
+ return rc;
+
+ if (item->type == RTE_FLOW_ITEM_TYPE_PPPOED)
+ ether_type = RTE_ETHER_TYPE_PPPOE_DISCOVERY;
+ else
+ ether_type = RTE_ETHER_TYPE_PPPOE_SESSION;
+
+ if ((efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE) != 0) {
+ if (efx_spec->efs_ether_type != ether_type) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "Invalid EtherType for a PPPoE flow
item");
+ return -rte_errno;
+ }
+ } else {
+ efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
+ efx_spec->efs_ether_type = ether_type;
+ }
+
+ return 0;
+}
+
static const struct sfc_flow_item sfc_flow_items[] = {
{
.type = RTE_FLOW_ITEM_TYPE_VOID,
@@ -1085,6 +1143,20 @@ static const struct sfc_flow_item sfc_flow_items[] = {
.ctx_type = SFC_FLOW_PARSE_CTX_FILTER,
.parse = sfc_flow_parse_vlan,
},
+ {
+ .type = RTE_FLOW_ITEM_TYPE_PPPOED,
+ .prev_layer = SFC_FLOW_ITEM_L2,
+ .layer = SFC_FLOW_ITEM_L2,
+ .ctx_type = SFC_FLOW_PARSE_CTX_FILTER,
+ .parse = sfc_flow_parse_pppoex,
+ },
+ {
+ .type = RTE_FLOW_ITEM_TYPE_PPPOES,
+ .prev_layer = SFC_FLOW_ITEM_L2,
+ .layer = SFC_FLOW_ITEM_L2,
+ .ctx_type = SFC_FLOW_PARSE_CTX_FILTER,
+ .parse = sfc_flow_parse_pppoex,
+ },
{
.type = RTE_FLOW_ITEM_TYPE_IPV4,
.prev_layer = SFC_FLOW_ITEM_L2,
--
2.30.1
