27 lines
785 B
Diff
27 lines
785 B
Diff
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tuntap: set SOCK_ZEROCOPY flag during open
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Commit 54f968d6efdbf7dec36faa44fc11f01b0e4d1990
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(tuntap: move socket to tun_file) forgets to set SOCK_ZEROCOPY flag, which will
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prevent vhost_net from doing zercopy w/ tap. This patch fixes this by setting
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it during file open.
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Cc: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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Acked-by: Michael S. Tsirkin <mst@redhat.com>
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---
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diff --git a/drivers/net/tun.c b/drivers/net/tun.c
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index 89776c5..ff5312d 100644
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--- a/drivers/net/tun.c
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+++ b/drivers/net/tun.c
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@@ -2159,6 +2159,8 @@ static int tun_chr_open(struct inode *inode, struct file * file)
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set_bit(SOCK_EXTERNALLY_ALLOCATED, &tfile->socket.flags);
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INIT_LIST_HEAD(&tfile->next);
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+ sock_set_flag(&tfile->sk, SOCK_ZEROCOPY);
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+
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return 0;
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}
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