[dpdk-dev] [PATCH v4 3/4] net/i40e: add MPLS parsing function
Beilei Xing
beilei.xing at intel.com
Thu Mar 30 06:07:54 CEST 2017
This patch add MPLS parsing function to support
MPLS filtering.
Signed-off-by: Beilei Xing <beilei.xing at intel.com>
---
drivers/net/i40e/i40e_ethdev.h | 2 +
drivers/net/i40e/i40e_flow.c | 234 ++++++++++++++++++++++++++++++++++++++++-
2 files changed, 235 insertions(+), 1 deletion(-)
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 9aacff7..dec1bd6 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -543,6 +543,8 @@ enum i40e_tunnel_type {
I40E_TUNNEL_TYPE_NVGRE,
I40E_TUNNEL_TYPE_IP_IN_GRE,
I40E_L2_TUNNEL_TYPE_E_TAG,
+ I40E_TUNNEL_TYPE_MPLSoUDP,
+ I40E_TUNNEL_TYPE_MPLSoGRE,
I40E_TUNNEL_TYPE_MAX,
};
diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index 148e519..c9b9b3b 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -57,6 +57,7 @@
#define I40E_IPV6_FRAG_HEADER 44
#define I40E_TENANT_ARRAY_NUM 3
#define I40E_TCI_MASK 0xFFFF
+#define I40E_MPLS_LABEL_MASK 0xFFFFF
static int i40e_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
@@ -114,6 +115,12 @@ static int i40e_flow_parse_vxlan_filter(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct rte_flow_error *error,
union i40e_filter_t *filter);
+static int i40e_flow_parse_mpls_filter(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item pattern[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error,
+ union i40e_filter_t *filter);
static int i40e_flow_destroy_ethertype_filter(struct i40e_pf *pf,
struct i40e_ethertype_filter *filter);
static int i40e_flow_destroy_tunnel_filter(struct i40e_pf *pf,
@@ -278,6 +285,39 @@ static enum rte_flow_item_type pattern_vxlan_4[] = {
RTE_FLOW_ITEM_TYPE_END,
};
+/* Pattern matched MPLS */
+static enum rte_flow_item_type pattern_mpls_1[] = {
+ RTE_FLOW_ITEM_TYPE_ETH,
+ RTE_FLOW_ITEM_TYPE_IPV4,
+ RTE_FLOW_ITEM_TYPE_UDP,
+ RTE_FLOW_ITEM_TYPE_MPLS,
+ RTE_FLOW_ITEM_TYPE_END,
+};
+
+static enum rte_flow_item_type pattern_mpls_2[] = {
+ RTE_FLOW_ITEM_TYPE_ETH,
+ RTE_FLOW_ITEM_TYPE_IPV6,
+ RTE_FLOW_ITEM_TYPE_UDP,
+ RTE_FLOW_ITEM_TYPE_MPLS,
+ RTE_FLOW_ITEM_TYPE_END,
+};
+
+static enum rte_flow_item_type pattern_mpls_3[] = {
+ RTE_FLOW_ITEM_TYPE_ETH,
+ RTE_FLOW_ITEM_TYPE_IPV4,
+ RTE_FLOW_ITEM_TYPE_GRE,
+ RTE_FLOW_ITEM_TYPE_MPLS,
+ RTE_FLOW_ITEM_TYPE_END,
+};
+
+static enum rte_flow_item_type pattern_mpls_4[] = {
+ RTE_FLOW_ITEM_TYPE_ETH,
+ RTE_FLOW_ITEM_TYPE_IPV6,
+ RTE_FLOW_ITEM_TYPE_GRE,
+ RTE_FLOW_ITEM_TYPE_MPLS,
+ RTE_FLOW_ITEM_TYPE_END,
+};
+
static struct i40e_valid_pattern i40e_supported_patterns[] = {
/* Ethertype */
{ pattern_ethertype, i40e_flow_parse_ethertype_filter },
@@ -303,6 +343,11 @@ static struct i40e_valid_pattern i40e_supported_patterns[] = {
{ pattern_vxlan_2, i40e_flow_parse_vxlan_filter },
{ pattern_vxlan_3, i40e_flow_parse_vxlan_filter },
{ pattern_vxlan_4, i40e_flow_parse_vxlan_filter },
+ /* MPLSoUDP & MPLSoGRE */
+ { pattern_mpls_1, i40e_flow_parse_mpls_filter },
+ { pattern_mpls_2, i40e_flow_parse_mpls_filter },
+ { pattern_mpls_3, i40e_flow_parse_mpls_filter },
+ { pattern_mpls_4, i40e_flow_parse_mpls_filter },
};
#define NEXT_ITEM_OF_ACTION(act, actions, index) \
@@ -1516,6 +1561,193 @@ i40e_flow_parse_vxlan_filter(struct rte_eth_dev *dev,
}
static int
+i40e_check_label_mask(const uint8_t *mask)
+{
+ uint32_t j;
+ int is_masked = 0;
+
+ for (j = 0; j < I40E_TENANT_ARRAY_NUM; j++) {
+ if (*(mask + j) == 0) {
+ if (j > 0 && (*(mask + j) != *(mask + j - 1)))
+ return -EINVAL;
+ is_masked = 1;
+ } else if (*(mask + j) == UINT8_MAX) {
+ if (j == 2)
+ return -EINVAL;
+ } else if (*(mask + j) == 0xF0) {
+ if (j != 2)
+ return -EINVAL;
+ is_masked = 0;
+ } else
+ return -EINVAL;
+ }
+
+ return is_masked;
+}
+
+/* 1. Last in item should be NULL as range is not supported.
+ * 2. Supported filter types: MPLS label.
+ * 3. Mask of fields which need to be matched should be
+ * filled with 1.
+ * 4. Mask of fields which needn't to be matched should be
+ * filled with 0.
+ */
+static int
+i40e_flow_parse_mpls_pattern(__rte_unused struct rte_eth_dev *dev,
+ const struct rte_flow_item *pattern,
+ struct rte_flow_error *error,
+ struct i40e_tunnel_filter_conf *filter)
+{
+ const struct rte_flow_item *item = pattern;
+ const struct rte_flow_item_mpls *mpls_spec;
+ const struct rte_flow_item_mpls *mpls_mask;
+ enum rte_flow_item_type item_type;
+ bool is_mplsoudp = 0; /* 1 - MPLSoUDP, 0 - MPLSoGRE */
+ int is_label_masked = 0;
+ uint32_t label_be = 0;
+
+ for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
+ if (item->last) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Not support range");
+ return -rte_errno;
+ }
+ item_type = item->type;
+ switch (item_type) {
+ case RTE_FLOW_ITEM_TYPE_ETH:
+ if (item->spec || item->mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid ETH item");
+ return -rte_errno;
+ }
+ break;
+ case RTE_FLOW_ITEM_TYPE_IPV4:
+ filter->ip_type = I40E_TUNNEL_IPTYPE_IPV4;
+ /* IPv4 is used to describe protocol,
+ * spec amd mask should be NULL.
+ */
+ if (item->spec || item->mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid IPv4 item");
+ return -rte_errno;
+ }
+ break;
+ case RTE_FLOW_ITEM_TYPE_IPV6:
+ filter->ip_type = I40E_TUNNEL_IPTYPE_IPV6;
+ /* IPv6 is used to describe protocol,
+ * spec amd mask should be NULL.
+ */
+ if (item->spec || item->mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid IPv6 item");
+ return -rte_errno;
+ }
+ break;
+ case RTE_FLOW_ITEM_TYPE_UDP:
+ /* UDP is used to describe protocol,
+ * spec amd mask should be NULL.
+ */
+ if (item->spec || item->mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid UDP item");
+ return -rte_errno;
+ }
+ is_mplsoudp = 1;
+ break;
+ case RTE_FLOW_ITEM_TYPE_GRE:
+ /* GRE is used to describe protocol,
+ * spec amd mask should be NULL.
+ */
+ if (item->spec || item->mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid GRE item");
+ return -rte_errno;
+ }
+ break;
+ case RTE_FLOW_ITEM_TYPE_MPLS:
+ mpls_spec =
+ (const struct rte_flow_item_mpls *)item->spec;
+ mpls_mask =
+ (const struct rte_flow_item_mpls *)item->mask;
+
+ if (!mpls_spec || !mpls_mask) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid MPLS item");
+ return -rte_errno;
+ }
+
+ is_label_masked =
+ i40e_check_label_mask(mpls_mask->label_tc_s);
+
+ if (is_label_masked != 0) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "Invalid MPLS label mask");
+ return -rte_errno;
+ }
+ rte_memcpy(((uint8_t *)&label_be + 1),
+ mpls_spec->label_tc_s, 3);
+ filter->tenant_id = rte_be_to_cpu_32(label_be) >> 4;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (is_mplsoudp)
+ filter->tunnel_type = I40E_TUNNEL_TYPE_MPLSoUDP;
+ else
+ filter->tunnel_type = I40E_TUNNEL_TYPE_MPLSoGRE;
+
+ return 0;
+}
+
+static int
+i40e_flow_parse_mpls_filter(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item pattern[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error,
+ union i40e_filter_t *filter)
+{
+ struct i40e_tunnel_filter_conf *tunnel_filter =
+ &filter->consistent_tunnel_filter;
+ int ret;
+
+ ret = i40e_flow_parse_mpls_pattern(dev, pattern,
+ error, tunnel_filter);
+ if (ret)
+ return ret;
+
+ ret = i40e_flow_parse_tunnel_action(dev, actions, error, tunnel_filter);
+ if (ret)
+ return ret;
+
+ ret = i40e_flow_parse_attr(attr, error);
+ if (ret)
+ return ret;
+
+ cons_filter_type = RTE_ETH_FILTER_TUNNEL;
+
+ return ret;
+}
+
+static int
i40e_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_attr *attr,
const struct rte_flow_item pattern[],
@@ -1750,7 +1982,7 @@ i40e_flow_destroy_tunnel_filter(struct i40e_pf *pf,
ret = i40e_aq_remove_cloud_filters(hw, vsi->seid,
&cld_filter.element, 1);
if (ret < 0)
- return ret;
+ return -ENOTSUP;
node = i40e_sw_tunnel_filter_lookup(tunnel_rule, &filter->input);
if (!node)
--
2.5.5
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