diff options
author | Haiyang Zhang <haiyangz@microsoft.com> | 2019-01-15 03:51:42 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-05 19:58:50 +0300 |
commit | 51b547f2a44570475846ceeb3c21f35424efb370 (patch) | |
tree | 38718dc82bc2705741e8b9957f8a018f2401e982 | |
parent | ad74456b500c0f0009fa444311ce84dcf85a41d6 (diff) | |
download | linux-51b547f2a44570475846ceeb3c21f35424efb370.tar.xz |
hv_netvsc: Fix ethtool change hash key error
[ Upstream commit b4a10c750424e01b5e37372fef0a574ebf7b56c3 ]
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>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
[sl: fix up subject line]
Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r-- | drivers/net/hyperv/rndis_filter.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 2a5209f23f29..0b05f7ebeb01 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -715,8 +715,8 @@ cleanup: 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; @@ -745,7 +745,7 @@ 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; @@ -770,9 +770,12 @@ 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; @@ -783,6 +786,16 @@ cleanup: 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) { |