diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/sendmsg6_prog.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sendmsg6_prog.c | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c index 255a432bc163..36a7f960799f 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c @@ -8,6 +8,8 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> +#include <bpf_sockopt_helpers.h> + #define SRC_REWRITE_IP6_0 0 #define SRC_REWRITE_IP6_1 0 #define SRC_REWRITE_IP6_2 0 @@ -18,9 +20,12 @@ #define DST_REWRITE_IP6_2 0 #define DST_REWRITE_IP6_3 1 -#define DST_REWRITE_PORT6 6666 +#define DST_REWRITE_IP6_V4_MAPPED_0 0 +#define DST_REWRITE_IP6_V4_MAPPED_1 0 +#define DST_REWRITE_IP6_V4_MAPPED_2 0x0000FFFF +#define DST_REWRITE_IP6_V4_MAPPED_3 0xc0a80004 // 192.168.0.4 -int _version SEC("version") = 1; +#define DST_REWRITE_PORT6 6666 SEC("cgroup/sendmsg6") int sendmsg_v6_prog(struct bpf_sock_addr *ctx) @@ -28,6 +33,9 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx) if (ctx->type != SOCK_DGRAM) return 0; + if (!get_set_sk_priority(ctx)) + return 0; + /* Rewrite source. */ if (ctx->msg_src_ip6[3] == bpf_htonl(1) || ctx->msg_src_ip6[3] == bpf_htonl(0)) { @@ -56,4 +64,56 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx) return 1; } +SEC("cgroup/sendmsg6") +int sendmsg_v6_v4mapped_prog(struct bpf_sock_addr *ctx) +{ + /* Rewrite source. */ + ctx->msg_src_ip6[0] = bpf_htonl(SRC_REWRITE_IP6_0); + ctx->msg_src_ip6[1] = bpf_htonl(SRC_REWRITE_IP6_1); + ctx->msg_src_ip6[2] = bpf_htonl(SRC_REWRITE_IP6_2); + ctx->msg_src_ip6[3] = bpf_htonl(SRC_REWRITE_IP6_3); + + /* Rewrite destination. */ + ctx->user_ip6[0] = bpf_htonl(DST_REWRITE_IP6_V4_MAPPED_0); + ctx->user_ip6[1] = bpf_htonl(DST_REWRITE_IP6_V4_MAPPED_1); + ctx->user_ip6[2] = bpf_htonl(DST_REWRITE_IP6_V4_MAPPED_2); + ctx->user_ip6[3] = bpf_htonl(DST_REWRITE_IP6_V4_MAPPED_3); + + ctx->user_port = bpf_htons(DST_REWRITE_PORT6); + + return 1; +} + +SEC("cgroup/sendmsg6") +int sendmsg_v6_wildcard_prog(struct bpf_sock_addr *ctx) +{ + /* Rewrite source. */ + ctx->msg_src_ip6[0] = bpf_htonl(SRC_REWRITE_IP6_0); + ctx->msg_src_ip6[1] = bpf_htonl(SRC_REWRITE_IP6_1); + ctx->msg_src_ip6[2] = bpf_htonl(SRC_REWRITE_IP6_2); + ctx->msg_src_ip6[3] = bpf_htonl(SRC_REWRITE_IP6_3); + + /* Rewrite destination. */ + ctx->user_ip6[0] = bpf_htonl(0); + ctx->user_ip6[1] = bpf_htonl(0); + ctx->user_ip6[2] = bpf_htonl(0); + ctx->user_ip6[3] = bpf_htonl(0); + + ctx->user_port = bpf_htons(DST_REWRITE_PORT6); + + return 1; +} + +SEC("cgroup/sendmsg6") +int sendmsg_v6_preserve_dst_prog(struct bpf_sock_addr *ctx) +{ + return 1; +} + +SEC("cgroup/sendmsg6") +int sendmsg_v6_deny_prog(struct bpf_sock_addr *ctx) +{ + return 0; +} + char _license[] SEC("license") = "GPL"; |