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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, jasowang@redhat.com, chenbo.xia@intel.com,
	david.marchand@redhat.com, olivier.matz@6wind.com
Cc: stable@dpdk.org, Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [PATCH 3/6] net/vhost: enable compliant offloading mode
Date: Thu,  5 May 2022 12:27:26 +0200
Message-ID: <20220505102729.821075-4-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20220505102729.821075-1-maxime.coquelin@redhat.com>

This patch enables the compliant offloading flags mode by
default, which prevents the Rx path to set Tx offload flags,
which is illegal. A new legacy-ol-flags devarg is introduced
to enable the legacy behaviour.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 doc/guides/nics/vhost.rst         |  6 ++++++
 drivers/net/vhost/rte_eth_vhost.c | 19 ++++++++++++++++---
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/doc/guides/nics/vhost.rst b/doc/guides/nics/vhost.rst
index ee802ec4a8..d7c0e2ade8 100644
--- a/doc/guides/nics/vhost.rst
+++ b/doc/guides/nics/vhost.rst
@@ -64,6 +64,12 @@ The user can specify below arguments in `--vdev` option.
     It is used to enable external buffer support in vhost library.
     (Default: 0 (disabled))
 
+#.  ``legacy-ol-flags``:
+
+    It is used to restore legacy behavior for offloading that was not
+    compliant with offloading API.
+    (Default: 0 (disabled))
+
 Vhost PMD event handling
 ------------------------
 
diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index 070f0e6dfd..0a2e8d9b29 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -31,9 +31,10 @@ enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
 #define ETH_VHOST_CLIENT_ARG		"client"
 #define ETH_VHOST_IOMMU_SUPPORT		"iommu-support"
 #define ETH_VHOST_POSTCOPY_SUPPORT	"postcopy-support"
-#define ETH_VHOST_VIRTIO_NET_F_HOST_TSO "tso"
-#define ETH_VHOST_LINEAR_BUF  "linear-buffer"
-#define ETH_VHOST_EXT_BUF  "ext-buffer"
+#define ETH_VHOST_VIRTIO_NET_F_HOST_TSO	"tso"
+#define ETH_VHOST_LINEAR_BUF		"linear-buffer"
+#define ETH_VHOST_EXT_BUF		"ext-buffer"
+#define ETH_VHOST_LEGACY_OL_FLAGS	"legacy-ol-flags"
 #define VHOST_MAX_PKT_BURST 32
 
 static const char *valid_arguments[] = {
@@ -1563,6 +1564,7 @@ rte_pmd_vhost_probe(struct rte_vdev_device *dev)
 	int tso = 0;
 	int linear_buf = 0;
 	int ext_buf = 0;
+	int legacy_ol_flags = 0;
 	struct rte_eth_dev *eth_dev;
 	const char *name = rte_vdev_device_name(dev);
 
@@ -1672,6 +1674,17 @@ rte_pmd_vhost_probe(struct rte_vdev_device *dev)
 			flags |= RTE_VHOST_USER_EXTBUF_SUPPORT;
 	}
 
+	if (rte_kvargs_count(kvlist, ETH_VHOST_LEGACY_OL_FLAGS) == 1) {
+		ret = rte_kvargs_process(kvlist,
+				ETH_VHOST_LEGACY_OL_FLAGS,
+				&open_int, &legacy_ol_flags);
+		if (ret < 0)
+			goto out_free;
+	}
+
+	if (legacy_ol_flags == 0)
+		flags |= RTE_VHOST_USER_NET_COMPLIANT_OL_FLAGS;
+
 	if (dev->device.numa_node == SOCKET_ID_ANY)
 		dev->device.numa_node = rte_socket_id();
 
-- 
2.35.1


  parent reply	other threads:[~2022-05-05 10:27 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-05 10:27 [PATCH 0/6] Vhost checksum offload improvements Maxime Coquelin
2022-05-05 10:27 ` [PATCH 1/6] Revert "app/testpmd: modify mac in csum forwarding" Maxime Coquelin
2022-05-16 13:03   ` Xia, Chenbo
2022-05-17 15:24     ` Zhang, Yuying
2022-05-19 16:27   ` David Marchand
2022-05-05 10:27 ` [PATCH 2/6] vhost: fix missing enqueue pseudo-header calculation Maxime Coquelin
2022-05-16 13:24   ` Xia, Chenbo
2022-05-05 10:27 ` Maxime Coquelin [this message]
2022-05-16 13:26   ` [PATCH 3/6] net/vhost: enable compliant offloading mode Xia, Chenbo
2022-05-16 13:28     ` Maxime Coquelin
2022-05-16 13:39       ` Xia, Chenbo
2022-06-07  1:19         ` Ma, WenwuX
2022-06-08  8:19           ` Maxime Coquelin
2022-05-05 10:27 ` [PATCH 4/6] net/vhost: make VLAN stripping flag a boolean Maxime Coquelin
2022-05-16 13:27   ` Xia, Chenbo
2022-05-05 10:27 ` [PATCH 5/6] net/vhost: perform SW checksum in Rx path Maxime Coquelin
2022-05-05 10:27 ` [PATCH 6/6] net/vhost: perform SW checksum in Tx path Maxime Coquelin
2022-05-07  3:20   ` Ma, WenwuX
2022-06-02  9:07     ` Maxime Coquelin
2022-06-06  9:44       ` Ma, WenwuX
2022-06-08  8:14         ` Maxime Coquelin
2022-06-09  1:03           ` Ma, WenwuX

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