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From c98dd268d17c4faa19dac141f69597096bf0dfa4 Mon Sep 17 00:00:00 2001
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Message-Id: <c98dd268d17c4faa19dac141f69597096bf0dfa4.1647872200.git.aclaudi@redhat.com>
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In-Reply-To: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1647872200.git.aclaudi@redhat.com>
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References: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1647872200.git.aclaudi@redhat.com>
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 21 Mar 2022 15:03:16 +0100
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Subject: [PATCH] vdpa: Support reading device features
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2056827
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Upstream Status: iproute2-next.git commit 56eb8bf4
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commit 56eb8bf45aa3d509eb119201341d0323ea81ef84
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Author: Eli Cohen <elic@nvidia.com>
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Date: Sun Mar 13 19:12:19 2022 +0200
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vdpa: Support reading device features
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When showing the available management devices, check if
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VDPA_ATTR_DEV_SUPPORTED_FEATURES feature is available and print the
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supported features for a management device.
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Examples:
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$ vdpa mgmtdev show
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auxiliary/mlx5_core.sf.1:
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supported_classes net
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max_supported_vqs 257
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dev_features CSUM GUEST_CSUM MTU HOST_TSO4 HOST_TSO6 STATUS CTRL_VQ MQ \
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CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM
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$ vdpa -jp mgmtdev show
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{
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"mgmtdev": {
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"auxiliary/mlx5_core.sf.1": {
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"supported_classes": [ "net" ],
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"max_supported_vqs": 257,
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"dev_features": [
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"CSUM","GUEST_CSUM","MTU","HOST_TSO4","HOST_TSO6","STATUS","CTRL_VQ","MQ",\
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"CTRL_MAC_ADDR","VERSION_1","ACCESS_PLATFORM" ]
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}
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}
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}
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Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
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Acked-by: Jason Wang <jasowang@redhat.com>
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Signed-off-by: Eli Cohen <elic@nvidia.com>
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Signed-off-by: David Ahern <dsahern@kernel.org>
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---
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vdpa/vdpa.c | 15 +++++++++++++--
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1 file changed, 13 insertions(+), 2 deletions(-)
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diff --git a/vdpa/vdpa.c b/vdpa/vdpa.c
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index 9985b6ca..3ae1b78f 100644
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--- a/vdpa/vdpa.c
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+++ b/vdpa/vdpa.c
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@@ -84,6 +84,7 @@ static const enum mnl_attr_data_type vdpa_policy[VDPA_ATTR_MAX + 1] = {
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[VDPA_ATTR_DEV_MAX_VQ_SIZE] = MNL_TYPE_U16,
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[VDPA_ATTR_DEV_NEGOTIATED_FEATURES] = MNL_TYPE_U64,
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[VDPA_ATTR_DEV_MGMTDEV_MAX_VQS] = MNL_TYPE_U32,
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+ [VDPA_ATTR_DEV_SUPPORTED_FEATURES] = MNL_TYPE_U64,
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};
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static int attr_cb(const struct nlattr *attr, void *data)
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@@ -492,14 +493,14 @@ static void print_features(struct vdpa *vdpa, uint64_t features, bool mgmtdevf,
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static void pr_out_mgmtdev_show(struct vdpa *vdpa, const struct nlmsghdr *nlh,
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struct nlattr **tb)
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{
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+ uint64_t classes = 0;
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const char *class;
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unsigned int i;
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pr_out_handle_start(vdpa, tb);
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if (tb[VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES]) {
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- uint64_t classes = mnl_attr_get_u64(tb[VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES]);
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-
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+ classes = mnl_attr_get_u64(tb[VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES]);
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pr_out_array_start(vdpa, "supported_classes");
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for (i = 1; i < 64; i++) {
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@@ -520,6 +521,16 @@ static void pr_out_mgmtdev_show(struct vdpa *vdpa, const struct nlmsghdr *nlh,
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print_uint(PRINT_ANY, "max_supported_vqs", " max_supported_vqs %d", num_vqs);
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}
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+ if (tb[VDPA_ATTR_DEV_SUPPORTED_FEATURES]) {
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+ uint64_t features;
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+
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+ features = mnl_attr_get_u64(tb[VDPA_ATTR_DEV_SUPPORTED_FEATURES]);
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+ if (classes & BIT(VIRTIO_ID_NET))
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+ print_features(vdpa, features, true, VIRTIO_ID_NET);
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+ else
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+ print_features(vdpa, features, true, 0);
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+ }
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+
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pr_out_handle_end(vdpa);
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}
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--
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2.35.1
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