From: Haiyang Zhang <haiyangz@linuxonhyperv.com>
To: sashal@kernel.org
Cc: haiyangz@microsoft.com, kys@microsoft.com,
sthemmin@microsoft.com, olaf@aepfle.de, vkuznets@redhat.com,
davem@davemloft.net, netdev@vger.kernel.org,
devel@linuxdriverproject.org, linux-kernel@vger.kernel.org
Subject: [PATCH hyperv-fixes,1/3] Fix ethtool change hash key error
Date: Tue, 15 Jan 2019 00:51:42 +0000 [thread overview]
Message-ID: <20190115005144.4494-2-haiyangz@linuxonhyperv.com> (raw)
In-Reply-To: <20190115005144.4494-1-haiyangz@linuxonhyperv.com>
From: Haiyang Zhang <haiyangz@microsoft.com>
Hyper-V hosts require us to disable RSS before changing RSS key,
otherwise the changing request will fail. This patch fixes the
coding error.
Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table")
Reported-by: Wei Hu <weh@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
drivers/net/hyperv/rndis_filter.c | 25 +++++++++++++++++++------
1 file changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 8b537a049c1e..a4661d396e3c 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -774,8 +774,8 @@ rndis_filter_set_offload_params(struct net_device *ndev,
return ret;
}
-int rndis_filter_set_rss_param(struct rndis_device *rdev,
- const u8 *rss_key)
+static int rndis_set_rss_param_msg(struct rndis_device *rdev,
+ const u8 *rss_key, u16 flag)
{
struct net_device *ndev = rdev->ndev;
struct rndis_request *request;
@@ -804,7 +804,7 @@ int rndis_filter_set_rss_param(struct rndis_device *rdev,
rssp->hdr.type = NDIS_OBJECT_TYPE_RSS_PARAMETERS;
rssp->hdr.rev = NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2;
rssp->hdr.size = sizeof(struct ndis_recv_scale_param);
- rssp->flag = 0;
+ rssp->flag = flag;
rssp->hashinfo = NDIS_HASH_FUNC_TOEPLITZ | NDIS_HASH_IPV4 |
NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 |
NDIS_HASH_TCP_IPV6;
@@ -829,9 +829,12 @@ int rndis_filter_set_rss_param(struct rndis_device *rdev,
wait_for_completion(&request->wait_event);
set_complete = &request->response_msg.msg.set_complete;
- if (set_complete->status == RNDIS_STATUS_SUCCESS)
- memcpy(rdev->rss_key, rss_key, NETVSC_HASH_KEYLEN);
- else {
+ if (set_complete->status == RNDIS_STATUS_SUCCESS) {
+ if (!(flag & NDIS_RSS_PARAM_FLAG_DISABLE_RSS) &&
+ !(flag & NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED))
+ memcpy(rdev->rss_key, rss_key, NETVSC_HASH_KEYLEN);
+
+ } else {
netdev_err(ndev, "Fail to set RSS parameters:0x%x\n",
set_complete->status);
ret = -EINVAL;
@@ -842,6 +845,16 @@ int rndis_filter_set_rss_param(struct rndis_device *rdev,
return ret;
}
+int rndis_filter_set_rss_param(struct rndis_device *rdev,
+ const u8 *rss_key)
+{
+ /* Disable RSS before change */
+ rndis_set_rss_param_msg(rdev, rss_key,
+ NDIS_RSS_PARAM_FLAG_DISABLE_RSS);
+
+ return rndis_set_rss_param_msg(rdev, rss_key, 0);
+}
+
static int rndis_filter_query_device_link_status(struct rndis_device *dev,
struct netvsc_device *net_device)
{
--
2.19.1
next prev parent reply other threads:[~2019-01-15 0:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-15 0:51 [PATCH hyperv-fixes,0/3] fixes for hash key setting issues Haiyang Zhang
2019-01-15 0:51 ` Haiyang Zhang [this message]
2019-01-19 1:11 ` [PATCH hyperv-fixes,1/3] Fix ethtool change hash key error Michael Kelley
2019-01-15 0:51 ` [PATCH hyperv-fixes,2/3] Refactor assignments of struct netvsc_device_info Haiyang Zhang
2019-01-19 1:13 ` Michael Kelley
2019-01-15 0:51 ` [PATCH hyperv-fixes,3/3] Fix hash key value reset after other ops Haiyang Zhang
2019-01-19 1:14 ` Michael Kelley
2019-01-17 20:20 ` [PATCH hyperv-fixes,0/3] fixes for hash key setting issues Sasha Levin
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