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| author | Alex Shi <alex.shi@linaro.org> | 2016-07-20 16:08:14 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-07-20 16:08:14 +0800 |
| commit | 1d508e233d21a7848cf54d7d03b40dac2d9ea873 (patch) | |
| tree | eec5222580c4bca752ae35d5cef3842166e6f8c8 /drivers/net/macvtap.c | |
| parent | 439863d92fda525a8f3b326a24490e91c70f0496 (diff) | |
| parent | 5880876e94699ce010554f483ccf0009997955ca (diff) | |
Merge remote-tracking branch 'lts/linux-4.1.y' into linux-linaro-lsk-v4.1lsk-v4.1-16.07
Conflicts:
pick up 45d1abd9de arm64: Use PoU cache instr for I/D coherency
in arch/arm64/mm/flush.c
Diffstat (limited to 'drivers/net/macvtap.c')
| -rw-r--r-- | drivers/net/macvtap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 4dba5fbc735e..2b212f3e140c 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -710,6 +710,8 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m, macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN; if (copylen > good_linear) copylen = good_linear; + else if (copylen < ETH_HLEN) + copylen = ETH_HLEN; linear = copylen; i = *from; iov_iter_advance(&i, copylen); @@ -719,10 +721,11 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m, if (!zerocopy) { copylen = len; - if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > good_linear) + linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len); + if (linear > good_linear) linear = good_linear; - else - linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len); + else if (linear < ETH_HLEN) + linear = ETH_HLEN; } skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen, |