[dpdk-dev] [PATCH 2/3] net/cxgbe: add option to keep outer VLAN tag in Q-in-Q
Rahul Lakkireddy
rahul.lakkireddy at chelsio.com
Wed Apr 4 05:53:36 CEST 2018
From: Shagun Agrawal <shaguna at chelsio.com>
Add devargs option to keep outer VLAN tag in Q-in-Q packets.
Signed-off-by: Shagun Agrawal <shaguna at chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras at chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy at chelsio.com>
---
doc/guides/nics/cxgbe.rst | 16 ++++++++
drivers/net/cxgbe/base/t4_regs.h | 54 ++++++++++++++++++++++++++
drivers/net/cxgbe/cxgbe_main.c | 82 ++++++++++++++++++++++++++++++++++++++++
drivers/net/cxgbe/sge.c | 3 +-
4 files changed, 154 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/cxgbe.rst b/doc/guides/nics/cxgbe.rst
index a4a7c944a..38d434802 100644
--- a/doc/guides/nics/cxgbe.rst
+++ b/doc/guides/nics/cxgbe.rst
@@ -127,6 +127,22 @@ enabling debugging options may affect system performance.
Toggle behaviour to prefer Throughput or Latency.
+Runtime Options
+~~~~~~~~~~~~~~~
+
+The following ``devargs`` options can be enabled at runtime. They must
+be passed as part of EAL arguments. For example,
+
+.. code-block:: console
+
+ testpmd -w 02:00.4,keep_ovlan=1 -- -i
+
+- ``keep_ovlan`` (default **0**)
+
+ Toggle behaviour to keep/strip outer VLAN in Q-in-Q packets. If
+ enabled, the outer VLAN tag is preserved in Q-in-Q packets. Otherwise,
+ the outer VLAN tag is stripped in Q-in-Q packets.
+
.. _driver-compilation:
Driver compilation and testing
diff --git a/drivers/net/cxgbe/base/t4_regs.h b/drivers/net/cxgbe/base/t4_regs.h
index 28ff21927..c0d6ddcac 100644
--- a/drivers/net/cxgbe/base/t4_regs.h
+++ b/drivers/net/cxgbe/base/t4_regs.h
@@ -571,6 +571,9 @@
#define V_CSUM_HAS_PSEUDO_HDR(x) ((x) << S_CSUM_HAS_PSEUDO_HDR)
#define F_CSUM_HAS_PSEUDO_HDR V_CSUM_HAS_PSEUDO_HDR(1U)
+#define S_RM_OVLAN 9
+#define V_RM_OVLAN(x) ((x) << S_RM_OVLAN)
+
/* registers for module MPS */
#define MPS_BASE_ADDR 0x9000
#define T4VF_MPS_BASE_ADDR 0x0100
@@ -789,6 +792,57 @@
#define A_MPS_VF_STAT_RX_VF_UCAST_FRAMES_L 0xf0
#define A_MPS_VF_STAT_RX_VF_ERR_FRAMES_L 0xf8
+#define A_MPS_PORT0_RX_IVLAN 0x3011c
+
+#define S_IVLAN_ETYPE 0
+#define M_IVLAN_ETYPE 0xffffU
+#define V_IVLAN_ETYPE(x) ((x) << S_IVLAN_ETYPE)
+
+#define MPS_PORT_RX_IVLAN_STRIDE 0x4000
+#define MPS_PORT_RX_IVLAN(idx) \
+ (A_MPS_PORT0_RX_IVLAN + (idx) * MPS_PORT_RX_IVLAN_STRIDE)
+
+#define A_MPS_PORT0_RX_OVLAN0 0x30120
+
+#define S_OVLAN_MASK 16
+#define M_OVLAN_MASK 0xffffU
+#define V_OVLAN_MASK(x) ((x) << S_OVLAN_MASK)
+
+#define S_OVLAN_ETYPE 0
+#define M_OVLAN_ETYPE 0xffffU
+#define V_OVLAN_ETYPE(x) ((x) << S_OVLAN_ETYPE)
+
+#define MPS_PORT_RX_OVLAN_STRIDE 0x4000
+#define MPS_PORT_RX_OVLAN_BASE(idx) \
+(A_MPS_PORT0_RX_OVLAN0 + (idx) * MPS_PORT_RX_OVLAN_STRIDE)
+#define MPS_PORT_RX_OVLAN_REG(idx, reg) (MPS_PORT_RX_OVLAN_BASE(idx) + (reg))
+
+#define A_RX_OVLAN0 0x0
+#define A_RX_OVLAN1 0x4
+#define A_RX_OVLAN2 0x8
+
+#define A_MPS_PORT0_RX_CTL 0x30100
+
+#define S_OVLAN_EN0 0
+#define V_OVLAN_EN0(x) ((x) << S_OVLAN_EN0)
+#define F_OVLAN_EN0 V_OVLAN_EN0(1)
+
+#define S_OVLAN_EN1 1
+#define V_OVLAN_EN1(x) ((x) << S_OVLAN_EN1)
+#define F_OVLAN_EN1 V_OVLAN_EN1(1)
+
+#define S_OVLAN_EN2 2
+#define V_OVLAN_EN2(x) ((x) << S_OVLAN_EN2)
+#define F_OVLAN_EN2 V_OVLAN_EN2(1)
+
+#define S_IVLAN_EN 4
+#define V_IVLAN_EN(x) ((x) << S_IVLAN_EN)
+#define F_IVLAN_EN V_IVLAN_EN(1)
+
+#define MPS_PORT_RX_CTL_STRIDE 0x4000
+#define MPS_PORT_RX_CTL(idx) \
+ (A_MPS_PORT0_RX_CTL + (idx) * MPS_PORT_RX_CTL_STRIDE)
+
/* registers for module ULP_RX */
#define ULP_RX_BASE_ADDR 0x19150
diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c
index 01a80ace8..c786a1a36 100644
--- a/drivers/net/cxgbe/cxgbe_main.c
+++ b/drivers/net/cxgbe/cxgbe_main.c
@@ -32,12 +32,15 @@
#include <rte_malloc.h>
#include <rte_random.h>
#include <rte_dev.h>
+#include <rte_kvargs.h>
#include "common.h"
#include "t4_regs.h"
#include "t4_msg.h"
#include "cxgbe.h"
+#define CXGBE_DEVARG_KEEP_OVLAN "keep_ovlan"
+
/*
* Response queue handler for the FW event queue.
*/
@@ -392,6 +395,84 @@ void print_port_info(struct adapter *adap)
}
}
+static int
+check_devargs_handler(__rte_unused const char *key, const char *value,
+ __rte_unused void *opaque)
+{
+ if (strcmp(value, "1"))
+ return -1;
+
+ return 0;
+}
+
+static int cxgbe_get_devargs(struct rte_devargs *devargs, const char *key)
+{
+ struct rte_kvargs *kvlist;
+
+ if (!devargs)
+ return 0;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (!kvlist)
+ return 0;
+
+ if (!rte_kvargs_count(kvlist, key)) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+
+ if (rte_kvargs_process(kvlist, key,
+ check_devargs_handler, NULL) < 0) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+ rte_kvargs_free(kvlist);
+
+ return 1;
+}
+
+static void configure_vlan_types(struct adapter *adapter)
+{
+ struct rte_pci_device *pdev = adapter->pdev;
+ int i;
+
+ for_each_port(adapter, i) {
+ /* OVLAN Type 0x88a8 */
+ t4_set_reg_field(adapter, MPS_PORT_RX_OVLAN_REG(i, A_RX_OVLAN0),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(M_OVLAN_ETYPE),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(0x88a8));
+ /* OVLAN Type 0x9100 */
+ t4_set_reg_field(adapter, MPS_PORT_RX_OVLAN_REG(i, A_RX_OVLAN1),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(M_OVLAN_ETYPE),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(0x9100));
+ /* OVLAN Type 0x8100 */
+ t4_set_reg_field(adapter, MPS_PORT_RX_OVLAN_REG(i, A_RX_OVLAN2),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(M_OVLAN_ETYPE),
+ V_OVLAN_MASK(M_OVLAN_MASK) |
+ V_OVLAN_ETYPE(0x8100));
+
+ /* IVLAN 0X8100 */
+ t4_set_reg_field(adapter, MPS_PORT_RX_IVLAN(i),
+ V_IVLAN_ETYPE(M_IVLAN_ETYPE),
+ V_IVLAN_ETYPE(0x8100));
+
+ t4_set_reg_field(adapter, MPS_PORT_RX_CTL(i),
+ F_OVLAN_EN0 | F_OVLAN_EN1 |
+ F_OVLAN_EN2 | F_IVLAN_EN,
+ F_OVLAN_EN0 | F_OVLAN_EN1 |
+ F_OVLAN_EN2 | F_IVLAN_EN);
+ }
+
+ if (cxgbe_get_devargs(pdev->device.devargs, CXGBE_DEVARG_KEEP_OVLAN))
+ t4_tp_wr_bits_indirect(adapter, A_TP_INGRESS_CONFIG,
+ V_RM_OVLAN(1), V_RM_OVLAN(0));
+}
+
static void configure_pcie_ext_tag(struct adapter *adapter)
{
u16 v;
@@ -808,6 +889,7 @@ static int adap_init0(struct adapter *adap)
t4_init_sge_params(adap);
t4_init_tp_params(adap);
configure_pcie_ext_tag(adap);
+ configure_vlan_types(adap);
adap->params.drv_memwin = MEMWIN_NIC;
adap->flags |= FW_OK;
diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c
index 83e26d0c6..0d866354e 100644
--- a/drivers/net/cxgbe/sge.c
+++ b/drivers/net/cxgbe/sge.c
@@ -1596,7 +1596,8 @@ static int process_responses(struct sge_rspq *q, int budget,
}
if (cpl->vlan_ex) {
- pkt->ol_flags |= PKT_RX_VLAN;
+ pkt->ol_flags |= PKT_RX_VLAN |
+ PKT_RX_VLAN_STRIPPED;
pkt->vlan_tci = ntohs(cpl->vlan);
}
--
2.14.1
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