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| author | David S. Miller | 2019-06-20 06:06:27 +0200 |
|---|---|---|
| committer | David S. Miller | 2019-06-20 06:06:27 +0200 |
| commit | dca73a65a68329ee386d3ff473152bac66eaab39 (patch) | |
| tree | 97c41afb932bdd6cbe67e7ffc38bfe5952c97798 /kernel/bpf/xskmap.c | |
| parent | page_pool: fix compile warning when CONFIG_PAGE_POOL is disabled (diff) | |
| parent | Merge branch 'bpf-bounded-loops' (diff) | |
| download | kernel-qcow2-linux-dca73a65a68329ee386d3ff473152bac66eaab39.tar.gz kernel-qcow2-linux-dca73a65a68329ee386d3ff473152bac66eaab39.tar.xz kernel-qcow2-linux-dca73a65a68329ee386d3ff473152bac66eaab39.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:
====================
pull-request: bpf-next 2019-06-19
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) new SO_REUSEPORT_DETACH_BPF setsocktopt, from Martin.
2) BTF based map definition, from Andrii.
3) support bpf_map_lookup_elem for xskmap, from Jonathan.
4) bounded loops and scalar precision logic in the verifier, from Alexei.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/xskmap.c')
| -rw-r--r-- | kernel/bpf/xskmap.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/bpf/xskmap.c b/kernel/bpf/xskmap.c index 22066c28ba61..ef7338cebd18 100644 --- a/kernel/bpf/xskmap.c +++ b/kernel/bpf/xskmap.c @@ -17,8 +17,8 @@ struct xsk_map { static struct bpf_map *xsk_map_alloc(union bpf_attr *attr) { - int cpu, err = -EINVAL; struct xsk_map *m; + int cpu, err; u64 cost; if (!capable(CAP_NET_ADMIN)) @@ -152,6 +152,12 @@ void __xsk_map_flush(struct bpf_map *map) static void *xsk_map_lookup_elem(struct bpf_map *map, void *key) { + WARN_ON_ONCE(!rcu_read_lock_held()); + return __xsk_map_lookup_elem(map, *(u32 *)key); +} + +static void *xsk_map_lookup_elem_sys_only(struct bpf_map *map, void *key) +{ return ERR_PTR(-EOPNOTSUPP); } @@ -218,6 +224,7 @@ const struct bpf_map_ops xsk_map_ops = { .map_free = xsk_map_free, .map_get_next_key = xsk_map_get_next_key, .map_lookup_elem = xsk_map_lookup_elem, + .map_lookup_elem_sys_only = xsk_map_lookup_elem_sys_only, .map_update_elem = xsk_map_update_elem, .map_delete_elem = xsk_map_delete_elem, .map_check_btf = map_check_no_btf, |