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SubjectRe: [PATCH net-next 2/2] tuntap: XDP transmission
Hi Jason,

I love your patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url: https://github.com/0day-ci/linux/commits/Jason-Wang/XDP-transmission-for-tuntap/20180101-105946
config: i386-randconfig-s1-201800 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

net/socket.o: In function `tun_xdp_to_ptr':
>> net/socket.c:3363: multiple definition of `tun_xdp_to_ptr'
drivers/vhost/net.o:drivers/vhost/net.c:1026: first defined here
net/socket.o: In function `tun_ptr_to_xdp':
>> include/linux/if_tun.h:50: multiple definition of `tun_ptr_to_xdp'
drivers/vhost/net.o:include/linux/if_tun.h:50: first defined here

vim +3363 net/socket.c

ac5a488e Sridhar Samudrala 2006-08-07 3352
306b13eb Tom Herbert 2017-07-28 3353 int kernel_sendpage_locked(struct sock *sk, struct page *page, int offset,
306b13eb Tom Herbert 2017-07-28 3354 size_t size, int flags)
306b13eb Tom Herbert 2017-07-28 3355 {
306b13eb Tom Herbert 2017-07-28 3356 struct socket *sock = sk->sk_socket;
306b13eb Tom Herbert 2017-07-28 3357
306b13eb Tom Herbert 2017-07-28 3358 if (sock->ops->sendpage_locked)
306b13eb Tom Herbert 2017-07-28 3359 return sock->ops->sendpage_locked(sk, page, offset, size,
306b13eb Tom Herbert 2017-07-28 3360 flags);
306b13eb Tom Herbert 2017-07-28 3361
306b13eb Tom Herbert 2017-07-28 3362 return sock_no_sendpage_locked(sk, page, offset, size, flags);
306b13eb Tom Herbert 2017-07-28 @3363 }
306b13eb Tom Herbert 2017-07-28 3364 EXPORT_SYMBOL(kernel_sendpage_locked);
306b13eb Tom Herbert 2017-07-28 3365

:::::: The code at line 3363 was first introduced by commit
:::::: 306b13eb3cf9515a8214bbf5d69d811371d05792 proto_ops: Add locked held versions of sendmsg and sendpage

:::::: TO: Tom Herbert <tom@quantonium.net>
:::::: CC: David S. Miller <davem@davemloft.net>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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