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selftests/bpf: fix compilation failure when CONFIG_NF_FLOW_TABLE=m

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In many cases, kernel netfilter functionality is built as modules.
If CONFIG_NF_FLOW_TABLE=m in particular, progs/xdp_flowtable.c
(and hence selftests) will fail to compile, so add a ___local
version of "struct flow_ports".

Fixes: c77e572d3a ("selftests/bpf: Add selftest for bpf_xdp_flow_lookup kfunc")
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/r/20240710150051.192598-1-alan.maguire@oracle.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Alan Maguire 2024-07-10 16:00:51 +01:00 committed by Alexei Starovoitov
parent c13fda93ac
commit eeb23b54e4
1 changed files with 7 additions and 3 deletions
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10
tools/testing/selftests/bpf/progs/xdp_flowtable.c
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@ -58,6 +58,10 @@ static bool xdp_flowtable_offload_check_tcp_state(void *ports, void *data_end,
return true; return true;
} }
struct flow_ports___local {
__be16 source, dest;
} __attribute__((preserve_access_index));
SEC("xdp.frags") SEC("xdp.frags")
int xdp_flowtable_do_lookup(struct xdp_md *ctx) int xdp_flowtable_do_lookup(struct xdp_md *ctx)
{ {
@ -69,7 +73,7 @@ int xdp_flowtable_do_lookup(struct xdp_md *ctx)
}; };
void *data = (void *)(long)ctx->data; void *data = (void *)(long)ctx->data;
struct ethhdr *eth = data; struct ethhdr *eth = data;
struct flow_ports *ports; struct flow_ports___local *ports;
__u32 *val, key = 0; __u32 *val, key = 0;
if (eth + 1 > data_end) if (eth + 1 > data_end)
@ -79,7 +83,7 @@ int xdp_flowtable_do_lookup(struct xdp_md *ctx)
case bpf_htons(ETH_P_IP): { case bpf_htons(ETH_P_IP): {
struct iphdr *iph = data + sizeof(*eth); struct iphdr *iph = data + sizeof(*eth);
ports = (struct flow_ports *)(iph + 1); ports = (struct flow_ports___local *)(iph + 1);
if (ports + 1 > data_end) if (ports + 1 > data_end)
return XDP_PASS; return XDP_PASS;
@ -106,7 +110,7 @@ int xdp_flowtable_do_lookup(struct xdp_md *ctx)
struct in6_addr *dst = (struct in6_addr *)tuple.ipv6_dst; struct in6_addr *dst = (struct in6_addr *)tuple.ipv6_dst;
struct ipv6hdr *ip6h = data + sizeof(*eth); struct ipv6hdr *ip6h = data + sizeof(*eth);
ports = (struct flow_ports *)(ip6h + 1); ports = (struct flow_ports___local *)(ip6h + 1);
if (ports + 1 > data_end) if (ports + 1 > data_end)
return XDP_PASS; return XDP_PASS;