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bpf: support map offload

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When program is loaded with a specified ifindex, use that
ifindex also when creating maps.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David Ahern <dsahern@gmail.com>
This commit is contained in:
Jakub Kicinski 2018-01-16 23:50:54 -08:00 committed by David Ahern
parent e0850bdedc
commit 5691e6bc58
1 changed files with 5 additions and 2 deletions
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7
lib/bpf.c
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@ -1208,7 +1208,7 @@ static int bpf_log_realloc(struct bpf_elf_ctx *ctx)
static int bpf_map_create(enum bpf_map_type type, uint32_t size_key,
uint32_t size_value, uint32_t max_elem,
uint32_t flags, int inner_fd)
uint32_t flags, int inner_fd, uint32_t ifindex)
{
union bpf_attr attr = {};
@ -1218,6 +1218,7 @@ static int bpf_map_create(enum bpf_map_type type, uint32_t size_key,
attr.max_entries = max_elem;
attr.map_flags = flags;
attr.inner_map_fd = inner_fd;
attr.map_ifindex = ifindex;
return bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
}
@ -1632,7 +1633,9 @@ static int bpf_map_attach(const char *name, struct bpf_elf_ctx *ctx,
errno = 0;
fd = bpf_map_create(map->type, map->size_key, map->size_value,
map->max_elem, map->flags, map_inner_fd);
map->max_elem, map->flags, map_inner_fd,
ctx->ifindex);
if (fd < 0 || ctx->verbose) {
bpf_map_report(fd, name, map, ctx, map_inner_fd);
if (fd < 0)