From 96a233e600df351bcb06e3c20efe048855552926 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Thu, 14 Jul 2022 11:51:01 +0100 Subject: bpf: Add endian modifiers to fix endian warnings A couple of the syscalls which load values (bpf_skb_load_helper_16() and bpf_skb_load_helper_32()) are using u16/u32 types which are triggering warnings as they are then converted from big-endian to CPU-endian. Fix these by making the types __be instead. Fixes the following sparse warnings: net/core/filter.c:246:32: warning: cast to restricted __be16 net/core/filter.c:246:32: warning: cast to restricted __be16 net/core/filter.c:246:32: warning: cast to restricted __be16 net/core/filter.c:246:32: warning: cast to restricted __be16 net/core/filter.c:273:32: warning: cast to restricted __be32 net/core/filter.c:273:32: warning: cast to restricted __be32 net/core/filter.c:273:32: warning: cast to restricted __be32 net/core/filter.c:273:32: warning: cast to restricted __be32 net/core/filter.c:273:32: warning: cast to restricted __be32 net/core/filter.c:273:32: warning: cast to restricted __be32 Signed-off-by: Ben Dooks Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220714105101.297304-1-ben.dooks@sifive.com --- net/core/filter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/core/filter.c') diff --git a/net/core/filter.c b/net/core/filter.c index 4ef77ec5255e..289614887ed5 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -237,7 +237,7 @@ BPF_CALL_2(bpf_skb_load_helper_8_no_cache, const struct sk_buff *, skb, BPF_CALL_4(bpf_skb_load_helper_16, const struct sk_buff *, skb, const void *, data, int, headlen, int, offset) { - u16 tmp, *ptr; + __be16 tmp, *ptr; const int len = sizeof(tmp); if (offset >= 0) { @@ -264,7 +264,7 @@ BPF_CALL_2(bpf_skb_load_helper_16_no_cache, const struct sk_buff *, skb, BPF_CALL_4(bpf_skb_load_helper_32, const struct sk_buff *, skb, const void *, data, int, headlen, int, offset) { - u32 tmp, *ptr; + __be32 tmp, *ptr; const int len = sizeof(tmp); if (likely(offset >= 0)) { -- cgit v1.2.3-59-g8ed1b