[PATCH v3 2/3] selftests/bpf: Prepare to add -Wsign-compare for bpf tests
From: Mehdi Ben Hadj Khelifa <hidden>
Date: 2025-09-25 09:36:20
Also in:
bpf, linux-kernel-mentees, linux-kselftest, lkml, mptcp
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
-Change only variable types for correct sign comparisons Signed-off-by: Mehdi Ben Hadj Khelifa <redacted> --- .../testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c | 2 +- tools/testing/selftests/bpf/progs/test_skb_ctx.c | 2 +- tools/testing/selftests/bpf/progs/test_snprintf.c | 2 +- tools/testing/selftests/bpf/progs/test_sockmap_strp.c | 2 +- tools/testing/selftests/bpf/progs/test_tc_tunnel.c | 2 +- tools/testing/selftests/bpf/progs/test_xdp.c | 2 +- 6 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c
index dc6e43bc6a62..bf3ac5c2938c 100644
--- a/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c
+++ b/tools/testing/selftests/bpf/progs/test_parse_tcp_hdr_opt_dynptr.c@@ -100,7 +100,7 @@ int xdp_ingress_v6(struct xdp_md *xdp) off += sizeof(struct tcphdr); /* max number of bytes of options in tcp header is 40 bytes */ - for (int i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { + for (__u32 i = 0; i < tcp_hdr_opt_max_opt_checks; i++) { err = parse_hdr_opt(&ptr, &off, &hdr_bytes_remaining, &server_id); if (err || !hdr_bytes_remaining)
diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
index a724a70c6700..7939a2edc414 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c@@ -11,7 +11,7 @@ SEC("tc") int process(struct __sk_buff *skb) { __pragma_loop_unroll_full - for (int i = 0; i < 5; i++) { + for (__u32 i = 0; i < 5; i++) { if (skb->cb[i] != i + 1) return 1; skb->cb[i]++;
diff --git a/tools/testing/selftests/bpf/progs/test_snprintf.c b/tools/testing/selftests/bpf/progs/test_snprintf.c
index 8fda07544023..1aa4835da71a 100644
--- a/tools/testing/selftests/bpf/progs/test_snprintf.c
+++ b/tools/testing/selftests/bpf/progs/test_snprintf.c@@ -4,7 +4,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> -__u32 pid = 0; +int pid = 0; char num_out[64] = {}; long num_ret = 0;
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c
index dde3d5bec515..e9675c45d8ef 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_strp.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_strp.c@@ -2,7 +2,7 @@ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> -int verdict_max_size = 10000; +__u32 verdict_max_size = 10000; struct { __uint(type, BPF_MAP_TYPE_SOCKMAP); __uint(max_entries, 20);
diff --git a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
index 404124a93892..c7e2d4571a2b 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c@@ -80,7 +80,7 @@ static __always_inline void set_ipv4_csum(struct iphdr *iph) { __u16 *iph16 = (__u16 *)iph; __u32 csum; - int i; + size_t i; iph->check = 0;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c
index 8caf58be5818..ce2a9ae26088 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp.c@@ -89,7 +89,7 @@ static __always_inline int handle_ipv4(struct xdp_md *xdp) struct vip vip = {}; int dport; __u32 csum = 0; - int i; + size_t i; if (iph + 1 > data_end) return XDP_DROP;
--
2.51.0