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| author | David S. Miller <davem@davemloft.net> | 2016-10-20 14:51:11 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-20 14:51:11 -0400 |
| commit | 9e58c5dc4be31f8cf3ff62d96f91c97af6f9d58e (patch) | |
| tree | 620fee35d81bca34bc7c117ba4bc65ab28f360b0 /drivers/net/hyperv | |
| parent | 1a61a8f1776758acb5111785c8a1688394fa3a60 (diff) | |
| parent | b96f9afee4eb5229c80afa3d97ccf725fb1b89a6 (diff) | |
Merge branch 'MTU-core-range-checking-more'
Jarod Wilson says:
====================
net: use core MTU range checking everywhere
This stack of patches should get absolutely everything in the kernel
converted from doing their own MTU range checking to the core MTU range
checking. This second spin includes alterations to hopefully fix all
concerns raised with the first, as well as including some additional
changes to drivers and infrastructure where I completely missed necessary
updates.
These have all been built through the 0-day build infrastructure via the
(rebasing) master branch at https://github.com/jarodwilson/linux-muck, which
at the time of the most recent compile across 147 configs, was based on
net-next at commit 7b1536ef0aa0.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv')
| -rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 4 | ||||
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 14 |
2 files changed, 9 insertions, 9 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index f4fbcb5aa24a..3958adade7eb 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -606,8 +606,8 @@ struct nvsp_message { } __packed; -#define NETVSC_MTU 65536 -#define NETVSC_MTU_MIN 68 +#define NETVSC_MTU 65535 +#define NETVSC_MTU_MIN ETH_MIN_MTU #define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */ #define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */ diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index f0919bd3a563..3b28cf127f9d 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -872,19 +872,12 @@ static int netvsc_change_mtu(struct net_device *ndev, int mtu) struct netvsc_device *nvdev = ndevctx->nvdev; struct hv_device *hdev = ndevctx->device_ctx; struct netvsc_device_info device_info; - int limit = ETH_DATA_LEN; u32 num_chn; int ret = 0; if (ndevctx->start_remove || !nvdev || nvdev->destroy) return -ENODEV; - if (nvdev->nvsp_version >= NVSP_PROTOCOL_VERSION_2) - limit = NETVSC_MTU - ETH_HLEN; - - if (mtu < NETVSC_MTU_MIN || mtu > limit) - return -EINVAL; - ret = netvsc_close(ndev); if (ret) goto out; @@ -1402,6 +1395,13 @@ static int netvsc_probe(struct hv_device *dev, netif_set_real_num_tx_queues(net, nvdev->num_chn); netif_set_real_num_rx_queues(net, nvdev->num_chn); + /* MTU range: 68 - 1500 or 65521 */ + net->min_mtu = NETVSC_MTU_MIN; + if (nvdev->nvsp_version >= NVSP_PROTOCOL_VERSION_2) + net->max_mtu = NETVSC_MTU - ETH_HLEN; + else + net->max_mtu = ETH_DATA_LEN; + ret = register_netdev(net); if (ret != 0) { pr_err("Unable to register netdev.\n"); |