There is a potential for us to hit a type conflict when including netinet/tcp.h and sys/socket.h, we can replace both of these includes with linux/tcp.h to avoid this conflict.

We also need to replace SOL_TCP with equivalent IPPROTO_TCP.

Fixes the following error: In file included from /usr/include/netinet/tcp.h:91, from progs/connect4_prog.c:11: /home/buildroot/opt/cross/lib/gcc/bpf/13.0.0/include/stdint.h:34:23: error: conflicting types for 'int8_t'; have 'char' 34 | typedef __INT8_TYPE__ int8_t; | ^~~~~~ In file included from /usr/include/x86_64-linux-gnu/sys/types.h:155, from /usr/include/x86_64-linux-gnu/bits/socket.h:29, from /usr/include/x86_64-linux-gnu/sys/socket.h:33, from progs/connect4_prog.c:10: /usr/include/x86_64-linux-gnu/bits/stdint-intn.h:24:18: note: previous declaration of 'int8_t' with type 'int8_t' {aka 'signed char'} 24 | typedef __int8_t int8_t; | ^~~~~~ /home/buildroot/opt/cross/lib/gcc/bpf/13.0.0/include/stdint.h:43:24: error: conflicting types for 'int64_t'; have 'long int' 43 | typedef __INT64_TYPE__ int64_t; | ^~~~~~~ /usr/include/x86_64-linux-gnu/bits/stdint-intn.h:27:19: note: previous declaration of 'int64_t' with type 'int64_t' {aka 'long long int'} 27 | typedef __int64_t int64_t; | ^~~~~~~

Signed-off-by: James Hilliard james.hilliard1@gmail.com --- .../selftests/bpf/progs/connect4_prog.c | 21 +++++++++---------- 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/connect4_prog.c b/tools/testing/selftests/bpf/progs/connect4_prog.c index b241932911db..0f68b8d756b3 100644 --- a/tools/testing/selftests/bpf/progs/connect4_prog.c +++ b/tools/testing/selftests/bpf/progs/connect4_prog.c @@ -7,8 +7,7 @@ #include <linux/bpf.h> #include <linux/in.h> #include <linux/in6.h> -#include <sys/socket.h> -#include <netinet/tcp.h> +#include <linux/tcp.h> #include <linux/if.h> #include <errno.h>

@@ -52,7 +51,7 @@ static __inline int verify_cc(struct bpf_sock_addr *ctx, char buf[TCP_CA_NAME_MAX]; int i;

- if (bpf_getsockopt(ctx, SOL_TCP, TCP_CONGESTION, &buf, sizeof(buf))) + if (bpf_getsockopt(ctx, IPPROTO_TCP, TCP_CONGESTION, &buf, sizeof(buf))) return 1;

for (i = 0; i < TCP_CA_NAME_MAX; i++) { @@ -70,12 +69,12 @@ static __inline int set_cc(struct bpf_sock_addr *ctx) char reno[TCP_CA_NAME_MAX] = "reno"; char cubic[TCP_CA_NAME_MAX] = "cubic";

- if (bpf_setsockopt(ctx, SOL_TCP, TCP_CONGESTION, &reno, sizeof(reno))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_CONGESTION, &reno, sizeof(reno))) return 1; if (verify_cc(ctx, reno)) return 1;

- if (bpf_setsockopt(ctx, SOL_TCP, TCP_CONGESTION, &cubic, sizeof(cubic))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_CONGESTION, &cubic, sizeof(cubic))) return 1; if (verify_cc(ctx, cubic)) return 1; @@ -113,15 +112,15 @@ static __inline int set_keepalive(struct bpf_sock_addr *ctx) if (bpf_setsockopt(ctx, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one))) return 1; if (ctx->type == SOCK_STREAM) { - if (bpf_setsockopt(ctx, SOL_TCP, TCP_KEEPIDLE, &one, sizeof(one))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_KEEPIDLE, &one, sizeof(one))) return 1; - if (bpf_setsockopt(ctx, SOL_TCP, TCP_KEEPINTVL, &one, sizeof(one))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_KEEPINTVL, &one, sizeof(one))) return 1; - if (bpf_setsockopt(ctx, SOL_TCP, TCP_KEEPCNT, &one, sizeof(one))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_KEEPCNT, &one, sizeof(one))) return 1; - if (bpf_setsockopt(ctx, SOL_TCP, TCP_SYNCNT, &one, sizeof(one))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_SYNCNT, &one, sizeof(one))) return 1; - if (bpf_setsockopt(ctx, SOL_TCP, TCP_USER_TIMEOUT, &one, sizeof(one))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_USER_TIMEOUT, &one, sizeof(one))) return 1; } if (bpf_setsockopt(ctx, SOL_SOCKET, SO_KEEPALIVE, &zero, sizeof(zero))) @@ -135,7 +134,7 @@ static __inline int set_notsent_lowat(struct bpf_sock_addr *ctx) int lowat = 65535;

if (ctx->type == SOCK_STREAM) { - if (bpf_setsockopt(ctx, SOL_TCP, TCP_NOTSENT_LOWAT, &lowat, sizeof(lowat))) + if (bpf_setsockopt(ctx, IPPROTO_TCP, TCP_NOTSENT_LOWAT, &lowat, sizeof(lowat))) return 1; }