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| author | Yunsheng Lin <linyunsheng@huawei.com> | 2018-09-25 10:21:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-18 09:16:17 +0200 |
| commit | 6c61dae979ae39850a3a9945f93e83e5b5baf31c (patch) | |
| tree | d012067750d3fae35a218aab0a335f2aeea757f2 /net/core/dev.c | |
| parent | 8193b775247a2c38294fd9d1fee5084b5c1b3de8 (diff) | |
net: hns: fix for unmapping problem when SMMU is on
[ Upstream commit 2e9361efa707e186d91b938e44f9e326725259f7 ]
If SMMU is on, there is more likely that skb_shinfo(skb)->frags[i]
can not send by a single BD. when this happen, the
hns_nic_net_xmit_hw function map the whole data in a frags using
skb_frag_dma_map, but unmap each BD' data individually when tx is
done, which causes problem when SMMU is on.
This patch fixes this problem by ummapping the whole data in a
frags when tx is done.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/dev.c')
0 files changed, 0 insertions, 0 deletions