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Message-ID: <202111171251.BupU6gdL-lkp@intel.com>
Date:   Wed, 17 Nov 2021 12:03:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     Toke Høiland-Jørgensen <toke@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [toke:xdp-traffic-gen-01 6/10] net/core/filter.c:3993:53: error:
 passing argument 1 of 'dev_map_enqueue_multi' from incompatible pointer type

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git xdp-traffic-gen-01
head:   a7f4d7f9e215d1e540f81f6cd3f5b46d970c5449
commit: e55a74b240bfe62c2e3b65455611e472636d9fb3 [6/10] xdp: Move conversion to xdp_frame out of map functions
config: arc-randconfig-r043-20211116 (attached as .config)
compiler: arceb-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git/commit/?id=e55a74b240bfe62c2e3b65455611e472636d9fb3
        git remote add toke https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git
        git fetch --no-tags toke xdp-traffic-gen-01
        git checkout e55a74b240bfe62c2e3b65455611e472636d9fb3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   net/core/filter.c: In function 'xdp_do_redirect':
>> net/core/filter.c:3993:53: error: passing argument 1 of 'dev_map_enqueue_multi' from incompatible pointer type [-Werror=incompatible-pointer-types]
    3993 |                         err = dev_map_enqueue_multi(xdpf, dev, map,
         |                                                     ^~~~
         |                                                     |
         |                                                     struct xdp_frame *
   In file included from include/linux/bpf-cgroup.h:5,
                    from include/linux/cgroup-defs.h:22,
                    from include/linux/cgroup.h:28,
                    from include/net/netprio_cgroup.h:11,
                    from include/linux/netdevice.h:41,
                    from include/net/sock.h:46,
                    from include/linux/sock_diag.h:8,
                    from net/core/filter.c:26:
   include/linux/bpf.h:1827:44: note: expected 'struct xdp_buff *' but argument is of type 'struct xdp_frame *'
    1827 | int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
         |                           ~~~~~~~~~~~~~~~~~^~~
>> net/core/filter.c:3996:52: error: passing argument 2 of 'dev_map_enqueue' from incompatible pointer type [-Werror=incompatible-pointer-types]
    3996 |                         err = dev_map_enqueue(fwd, xdpf, dev);
         |                                                    ^~~~
         |                                                    |
         |                                                    struct xdp_frame *
   In file included from include/linux/bpf-cgroup.h:5,
                    from include/linux/cgroup-defs.h:22,
                    from include/linux/cgroup.h:28,
                    from include/net/netprio_cgroup.h:11,
                    from include/linux/netdevice.h:41,
                    from include/net/sock.h:46,
                    from include/linux/sock_diag.h:8,
                    from net/core/filter.c:26:
   include/linux/bpf.h:1820:67: note: expected 'struct xdp_buff *' but argument is of type 'struct xdp_frame *'
    1820 | int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
         |                                                  ~~~~~~~~~~~~~~~~~^~~
>> net/core/filter.c:4000:44: error: passing argument 2 of 'cpu_map_enqueue' from incompatible pointer type [-Werror=incompatible-pointer-types]
    4000 |                 err = cpu_map_enqueue(fwd, xdpf, dev);
         |                                            ^~~~
         |                                            |
         |                                            struct xdp_frame *
   In file included from include/linux/bpf-cgroup.h:5,
                    from include/linux/cgroup-defs.h:22,
                    from include/linux/cgroup.h:28,
                    from include/net/netprio_cgroup.h:11,
                    from include/linux/netdevice.h:41,
                    from include/net/sock.h:46,
                    from include/linux/sock_diag.h:8,
                    from net/core/filter.c:26:
   include/linux/bpf.h:1855:52: note: expected 'struct xdp_buff *' but argument is of type 'struct xdp_frame *'
    1855 |                                   struct xdp_buff *xdp,
         |                                   ~~~~~~~~~~~~~~~~~^~~
>> net/core/filter.c:4010:52: error: passing argument 2 of 'dev_xdp_enqueue' from incompatible pointer type [-Werror=incompatible-pointer-types]
    4010 |                         err = dev_xdp_enqueue(fwd, xdpf, dev);
         |                                                    ^~~~
         |                                                    |
         |                                                    struct xdp_frame *
   In file included from include/linux/bpf-cgroup.h:5,
                    from include/linux/cgroup-defs.h:22,
                    from include/linux/cgroup.h:28,
                    from include/net/netprio_cgroup.h:11,
                    from include/linux/netdevice.h:41,
                    from include/net/sock.h:46,
                    from include/linux/sock_diag.h:8,
                    from net/core/filter.c:26:
   include/linux/bpf.h:1813:62: note: expected 'struct xdp_buff *' but argument is of type 'struct xdp_frame *'
    1813 | int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
         |                                             ~~~~~~~~~~~~~~~~~^~~
   cc1: some warnings being treated as errors


vim +/dev_map_enqueue_multi +3993 net/core/filter.c

  3960	
  3961	int xdp_do_redirect(struct net_device *dev, struct xdp_buff *xdp,
  3962			    struct bpf_prog *xdp_prog)
  3963	{
  3964		struct bpf_redirect_info *ri = this_cpu_ptr(&bpf_redirect_info);
  3965		enum bpf_map_type map_type = ri->map_type;
  3966		void *fwd = ri->tgt_value;
  3967		u32 map_id = ri->map_id;
  3968		struct xdp_frame *xdpf;
  3969		struct bpf_map *map;
  3970		int err;
  3971	
  3972		ri->map_id = 0; /* Valid map id idr range: [1,INT_MAX[ */
  3973		ri->map_type = BPF_MAP_TYPE_UNSPEC;
  3974	
  3975		if (map_type == BPF_MAP_TYPE_XSKMAP) {
  3976			err = __xsk_map_redirect(fwd, xdp);
  3977			goto out;
  3978		}
  3979	
  3980		xdpf = xdp_convert_buff_to_frame(xdp);
  3981		if (unlikely(!xdpf)) {
  3982			err = -EOVERFLOW;
  3983			goto err;
  3984		}
  3985	
  3986		switch (map_type) {
  3987		case BPF_MAP_TYPE_DEVMAP:
  3988			fallthrough;
  3989		case BPF_MAP_TYPE_DEVMAP_HASH:
  3990			map = READ_ONCE(ri->map);
  3991			if (unlikely(map)) {
  3992				WRITE_ONCE(ri->map, NULL);
> 3993				err = dev_map_enqueue_multi(xdpf, dev, map,
  3994							    ri->flags & BPF_F_EXCLUDE_INGRESS);
  3995			} else {
> 3996				err = dev_map_enqueue(fwd, xdpf, dev);
  3997			}
  3998			break;
  3999		case BPF_MAP_TYPE_CPUMAP:
> 4000			err = cpu_map_enqueue(fwd, xdpf, dev);
  4001			break;
  4002			break;
  4003		case BPF_MAP_TYPE_UNSPEC:
  4004			if (map_id == INT_MAX) {
  4005				fwd = dev_get_by_index_rcu(dev_net(dev), ri->tgt_index);
  4006				if (unlikely(!fwd)) {
  4007					err = -EINVAL;
  4008					break;
  4009				}
> 4010				err = dev_xdp_enqueue(fwd, xdpf, dev);
  4011				break;
  4012			}
  4013			fallthrough;
  4014		default:
  4015			err = -EBADRQC;
  4016		}
  4017	
  4018	out:
  4019		if (unlikely(err))
  4020			goto err;
  4021	
  4022		_trace_xdp_redirect_map(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index);
  4023		return 0;
  4024	err:
  4025		_trace_xdp_redirect_map_err(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index, err);
  4026		return err;
  4027	}
  4028	EXPORT_SYMBOL_GPL(xdp_do_redirect);
  4029	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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