selftests/bpf: Fix xdp_synproxy compilation failure in 32-bit arch

xdp_synproxy fails to be compiled in the 32-bit arch, log is as follows:

  xdp_synproxy.c: In function 'parse_options':
  xdp_synproxy.c:175:36: error: left shift count >= width of type [-Werror=shift-count-overflow]
    175 |                 *tcpipopts = (mss6 << 32) | (ttl << 24) | (wscale << 16) | mss4;
        |                                    ^~
  xdp_synproxy.c: In function 'syncookie_open_bpf_maps':
  xdp_synproxy.c:289:28: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
    289 |                 .map_ids = (__u64)map_ids,
        |                            ^

Fix it.

Fixes: fb5cd0ce70d4 ("selftests/bpf: Add selftests for raw syncookie helpers")
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20221111030836.37632-1-yangjihong1@huawei.com

diff --git a/tools/testing/selftests/bpf/xdp_synproxy.c b/tools/testing/selftests/bpf/xdp_synproxy.c
index ff35320d2be9720293ddbb2fff6bb7dbfabdbe5d..410a1385a01dd53bff142685a71e4f35f16cf830 100644 (file)
--- a/tools/testing/selftests/bpf/xdp_synproxy.c
+++ b/tools/testing/selftests/bpf/xdp_synproxy.c
@@ -104,7 +104,8 @@ static void parse_options(int argc, char *argv[], unsigned int *ifindex, __u32 *
                { "tc", no_argument, NULL, 'c' },
                { NULL, 0, NULL, 0 },
        };
-       unsigned long mss4, mss6, wscale, ttl;
+       unsigned long mss4, wscale, ttl;
+       unsigned long long mss6;
        unsigned int tcpipopts_mask = 0;
 
        if (argc < 2)
@@ -286,7 +287,7 @@ static int syncookie_open_bpf_maps(__u32 prog_id, int *values_map_fd, int *ports
 
        prog_info = (struct bpf_prog_info) {
                .nr_map_ids = 8,
-               .map_ids = (__u64)map_ids,
+               .map_ids = (__u64)(unsigned long)map_ids,
        };
        info_len = sizeof(prog_info);