1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2023 Isovalent */ 3 #ifndef TC_HELPERS 4 #define TC_HELPERS 5 #include <test_progs.h> 6 7 #ifndef loopback 8 # define loopback 1 9 #endif 10 11 static inline __u32 ifindex_from_link_fd(int fd) 12 { 13 struct bpf_link_info link_info = {}; 14 __u32 link_info_len = sizeof(link_info); 15 int err; 16 17 err = bpf_link_get_info_by_fd(fd, &link_info, &link_info_len); 18 if (!ASSERT_OK(err, "id_from_link_fd")) 19 return 0; 20 21 return link_info.tcx.ifindex; 22 } 23 24 static inline void __assert_mprog_count(int target, int expected, int ifindex) 25 { 26 __u32 count = 0, attach_flags = 0; 27 int err; 28 29 err = bpf_prog_query(ifindex, target, 0, &attach_flags, 30 NULL, &count); 31 ASSERT_EQ(count, expected, "count"); 32 ASSERT_EQ(err, 0, "prog_query"); 33 } 34 35 static inline void assert_mprog_count(int target, int expected) 36 { 37 __assert_mprog_count(target, expected, loopback); 38 } 39 40 static inline void assert_mprog_count_ifindex(int ifindex, int target, int expected) 41 { 42 __assert_mprog_count(target, expected, ifindex); 43 } 44 45 static inline void tc_skel_reset_all_seen(struct test_tc_link *skel) 46 { 47 memset(skel->bss, 0, sizeof(*skel->bss)); 48 } 49 50 #endif /* TC_HELPERS */ 51