[PATCH bpf-next] samples/bpf: fix compilation failure

[Prashant Bhole]

following commit:
commit d58e468b1112 ("flow_dissector: implements flow dissector BPF hook")
added struct bpf_flow_keys which conflicts with the struct with
same name in sockex2_kern.c and sockex3_kern.c

similar to commit:
commit 534e0e52bc23 ("samples/bpf: fix a compilation failure")
we tried the rename it "flow_keys" but it also conflicted with struct
having same name in include/net/flow_dissector.h. Hence renaming the
struct to "flow_key_record". Also, this commit doesn't fix the
compilation error completely because the similar struct is present in
sockex3_kern.c. Hence renaming it in both files sockex3_user.c and
sockex3_kern.c

Signed-off-by: Prashant Bhole <bhole_prashant...@lab.ntt.co.jp>
---
 samples/bpf/sockex2_kern.c | 11 ++++++-----
 samples/bpf/sockex3_kern.c |  8 ++++----
 samples/bpf/sockex3_user.c |  4 ++--
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/samples/bpf/sockex2_kern.c b/samples/bpf/sockex2_kern.c
index f58acfc92556..f2f9dbc021b0 100644
--- a/samples/bpf/sockex2_kern.c
+++ b/samples/bpf/sockex2_kern.c
@@ -14,7 +14,7 @@ struct vlan_hdr {
        __be16 h_vlan_encapsulated_proto;
 };
 
-struct bpf_flow_keys {
+struct flow_key_record {
        __be32 src;
        __be32 dst;
        union {
@@ -59,7 +59,7 @@ static inline __u32 ipv6_addr_hash(struct __sk_buff *ctx, 
__u64 off)
 }
 
 static inline __u64 parse_ip(struct __sk_buff *skb, __u64 nhoff, __u64 
*ip_proto,
-                            struct bpf_flow_keys *flow)
+                            struct flow_key_record *flow)
 {
        __u64 verlen;
 
@@ -83,7 +83,7 @@ static inline __u64 parse_ip(struct __sk_buff *skb, __u64 
nhoff, __u64 *ip_proto
 }
 
 static inline __u64 parse_ipv6(struct __sk_buff *skb, __u64 nhoff, __u64 
*ip_proto,
-                              struct bpf_flow_keys *flow)
+                              struct flow_key_record *flow)
 {
        *ip_proto = load_byte(skb,
                              nhoff + offsetof(struct ipv6hdr, nexthdr));
@@ -96,7 +96,8 @@ static inline __u64 parse_ipv6(struct __sk_buff *skb, __u64 
nhoff, __u64 *ip_pro
        return nhoff;
 }
 
-static inline bool flow_dissector(struct __sk_buff *skb, struct bpf_flow_keys 
*flow)
+static inline bool flow_dissector(struct __sk_buff *skb,
+                                 struct flow_key_record *flow)
 {
        __u64 nhoff = ETH_HLEN;
        __u64 ip_proto;
@@ -198,7 +199,7 @@ struct bpf_map_def SEC("maps") hash_map = {
 SEC("socket2")
 int bpf_prog2(struct __sk_buff *skb)
 {
-       struct bpf_flow_keys flow = {};
+       struct flow_key_record flow = {};
        struct pair *value;
        u32 key;
 
diff --git a/samples/bpf/sockex3_kern.c b/samples/bpf/sockex3_kern.c
index 95907f8d2b17..c527b57d3ec8 100644
--- a/samples/bpf/sockex3_kern.c
+++ b/samples/bpf/sockex3_kern.c
@@ -61,7 +61,7 @@ struct vlan_hdr {
        __be16 h_vlan_encapsulated_proto;
 };
 
-struct bpf_flow_keys {
+struct flow_key_record {
        __be32 src;
        __be32 dst;
        union {
@@ -88,7 +88,7 @@ static inline __u32 ipv6_addr_hash(struct __sk_buff *ctx, 
__u64 off)
 }
 
 struct globals {
-       struct bpf_flow_keys flow;
+       struct flow_key_record flow;
 };
 
 struct bpf_map_def SEC("maps") percpu_map = {
@@ -114,14 +114,14 @@ struct pair {
 
 struct bpf_map_def SEC("maps") hash_map = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(struct bpf_flow_keys),
+       .key_size = sizeof(struct flow_key_record),
        .value_size = sizeof(struct pair),
        .max_entries = 1024,
 };
 
 static void update_stats(struct __sk_buff *skb, struct globals *g)
 {
-       struct bpf_flow_keys key = g->flow;
+       struct flow_key_record key = g->flow;
        struct pair *value;
 
        value = bpf_map_lookup_elem(&hash_map, &key);
diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
index 22f74d0e1493..9d02e0404719 100644
--- a/samples/bpf/sockex3_user.c
+++ b/samples/bpf/sockex3_user.c
@@ -13,7 +13,7 @@
 #define PARSE_IP_PROG_FD (prog_fd[0])
 #define PROG_ARRAY_FD (map_fd[0])
 
-struct flow_keys {
+struct flow_key_record {
        __be32 src;
        __be32 dst;
        union {
@@ -64,7 +64,7 @@ int main(int argc, char **argv)
        (void) f;
 
        for (i = 0; i < 5; i++) {
-               struct flow_keys key = {}, next_key;
+               struct flow_key_record key = {}, next_key;
                struct pair value;
 
                sleep(1);
-- 
2.17.1