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Yunsheng Lin authored
When a big TX buffer is sent using multi BD, the driver maps the whole TX buffer, and unmaps it using info in desc_cb corresponding to each BD, but only the info in the desc_cb of first BD is correct, other info in desc_cb is wrong, which causes TX unmapping problem when SMMU is on. Only set the mapping and freeing info in the desc_cb of first BD to fix this problem, because the TX buffer only need to be unmapped and freed once. Fixes: 1e8a7977("net: hns3: add handling for big TX fragment") Signed-off-by:
Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by:
Huzhong Tan <tanhuazhong@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
0ec3b6a7