From fcb5d0fdafeebe49f42799b1d0d056c4b67bcc16 Mon Sep 17 00:00:00 2001 From: Christian Breunig Date: Mon, 12 Jun 2023 19:57:28 +0200 Subject: T5286: drop XDP support for ethernet and bonding interfaces ... this is a step towards a new and better implementation that will utilize VPP. --- src/xdp/common/common_libbpf.c | 161 ----------------------------------------- 1 file changed, 161 deletions(-) delete mode 100644 src/xdp/common/common_libbpf.c (limited to 'src/xdp/common/common_libbpf.c') diff --git a/src/xdp/common/common_libbpf.c b/src/xdp/common/common_libbpf.c deleted file mode 100644 index 443ca4c66..000000000 --- a/src/xdp/common/common_libbpf.c +++ /dev/null @@ -1,161 +0,0 @@ -/* Common function that with time should be moved to libbpf */ - -#include -#include - -#include -#include - -#include "common_libbpf.h" - -/* From: include/linux/err.h */ -#define MAX_ERRNO 4095 -#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO) -static inline bool IS_ERR_OR_NULL(const void *ptr) -{ - return (!ptr) || IS_ERR_VALUE((unsigned long)ptr); -} - -#define pr_warning printf - -/* As close as possible to libbpf bpf_prog_load_xattr(), with the - * difference of handling pinned maps. - */ -int bpf_prog_load_xattr_maps(const struct bpf_prog_load_attr_maps *attr, - struct bpf_object **pobj, int *prog_fd) -{ - struct bpf_program *prog, *first_prog = NULL; - enum bpf_attach_type expected_attach_type; - enum bpf_prog_type prog_type; - struct bpf_object *obj; - struct bpf_map *map; - int err; - int i; - - if (!attr) - return -EINVAL; - if (!attr->file) - return -EINVAL; - - obj = bpf_object__open_file(attr->file, NULL); - - if (libbpf_get_error(obj)) - return -EINVAL; - - prog = bpf_object__next_program(obj, NULL); - bpf_program__set_type(prog, attr->prog_type); - - bpf_object__for_each_program(prog, obj) { - /* - * If type is not specified, try to guess it based on - * section name. - */ - prog_type = attr->prog_type; - // Was: prog->prog_ifindex = attr->ifindex; - bpf_program__set_ifindex(prog, attr->ifindex); - - expected_attach_type = attr->expected_attach_type; -#if 0 /* Use internal libbpf variables */ - if (prog_type == BPF_PROG_TYPE_UNSPEC) { - err = bpf_program__identify_section(prog, &prog_type, - &expected_attach_type); - if (err < 0) { - bpf_object__close(obj); - return -EINVAL; - } - } -#endif - - bpf_program__set_type(prog, prog_type); - bpf_program__set_expected_attach_type(prog, - expected_attach_type); - - if (!first_prog) - first_prog = prog; - } - - /* Reset attr->pinned_maps.map_fd to identify successful file load */ - for (i = 0; i < attr->nr_pinned_maps; i++) - attr->pinned_maps[i].map_fd = -1; - - bpf_map__for_each(map, obj) { - const char* mapname = bpf_map__name(map); - - if (bpf_map__type(map) != BPF_MAP_TYPE_PERF_EVENT_ARRAY) - bpf_map__set_ifindex(map, attr->ifindex); - /* Was: map->map_ifindex = attr->ifindex; */ - - for (i = 0; i < attr->nr_pinned_maps; i++) { - struct bpf_pinned_map *pin_map = &attr->pinned_maps[i]; - int fd; - - if (strcmp(mapname, pin_map->name) != 0) - continue; - - /* Matched, try opening pinned file */ - fd = bpf_obj_get(pin_map->filename); - if (fd > 0) { - /* Use FD from pinned map as replacement */ - bpf_map__reuse_fd(map, fd); - /* TODO: Might want to set internal map "name" - * if opened pinned map didn't, to allow - * bpf_object__find_map_fd_by_name() to work. - */ - pin_map->map_fd = fd; - continue; - } - /* Could not open pinned filename map, then this prog - * should then pin the map, BUT this can only happen - * after bpf_object__load(). - */ - } - } - - if (!first_prog) { - pr_warning("object file doesn't contain bpf program\n"); - bpf_object__close(obj); - return -ENOENT; - } - - err = bpf_object__load(obj); - if (err) { - bpf_object__close(obj); - return -EINVAL; - } - - /* Pin the maps that were not loaded via pinned filename */ - bpf_map__for_each(map, obj) { - const char* mapname = bpf_map__name(map); - - for (i = 0; i < attr->nr_pinned_maps; i++) { - struct bpf_pinned_map *pin_map = &attr->pinned_maps[i]; - int err; - - if (strcmp(mapname, pin_map->name) != 0) - continue; - - /* Matched, check if map is already loaded */ - if (pin_map->map_fd != -1) - continue; - - /* Needs to be pinned */ - err = bpf_map__pin(map, pin_map->filename); - if (err) - continue; - pin_map->map_fd = bpf_map__fd(map); - } - } - - /* Help user if requested map name that doesn't exist */ - for (i = 0; i < attr->nr_pinned_maps; i++) { - struct bpf_pinned_map *pin_map = &attr->pinned_maps[i]; - - if (pin_map->map_fd < 0) - pr_warning("%s() requested mapname:%s not seen\n", - __func__, pin_map->name); - } - - *pobj = obj; - *prog_fd = bpf_program__fd(first_prog); - return 0; -} -- cgit v1.2.3