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authorBjörn Töpel <bjorn.topel@intel.com>2018-05-07 20:43:50 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2018-05-09 19:12:21 +0300
commitea7e3435297c6ba3c8ae51db6ea48f1ed657dc5c (patch)
tree2f8339e8c0e17b2aa4ac6421ec6eadc7dac876ef /net/xdp
parenta46a5c1a43499c04ce429ff3639f1417b9739ebd (diff)
downloadlinux-ea7e3435297c6ba3c8ae51db6ea48f1ed657dc5c.tar.xz
xsk: fix 64-bit division
i386 builds report: net/xdp/xdp_umem.o: In function `xdp_umem_reg': xdp_umem.c:(.text+0x47e): undefined reference to `__udivdi3' This fix uses div_u64 instead of the GCC built-in. Fixes: c0c77d8fb787 ("xsk: add user memory registration support sockopt") Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'net/xdp')
-rw-r--r--net/xdp/xdp_umem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
index 881dfdefe235..2b47a1dd7c6c 100644
--- a/net/xdp/xdp_umem.c
+++ b/net/xdp/xdp_umem.c
@@ -209,7 +209,7 @@ int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr)
if ((addr + size) < addr)
return -EINVAL;
- nframes = size / frame_size;
+ nframes = (unsigned int)div_u64(size, frame_size);
if (nframes == 0 || nframes > UINT_MAX)
return -EINVAL;