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author | Jani Nikula <jani.nikula@intel.com> | 2018-11-20 13:14:08 +0200 |
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committer | Jani Nikula <jani.nikula@intel.com> | 2018-11-20 13:14:08 +0200 |
commit | 2ac5e38ea4203852d6e99edd3cf11f044b0a409f (patch) | |
tree | 1ef02da98d56309368ad2b6a4e492bafe5bb4faf /tools/testing/selftests/bpf/test_queue_stack_map.h | |
parent | f48cc647f3e196a3179d695d3c2d56c13e9dec98 (diff) | |
parent | 9235dd441af43599b9cdcce599a3da4083fcad3c (diff) | |
download | talos-op-linux-2ac5e38ea4203852d6e99edd3cf11f044b0a409f.tar.gz talos-op-linux-2ac5e38ea4203852d6e99edd3cf11f044b0a409f.zip |
Merge drm/drm-next into drm-intel-next-queued
Pull in v4.20-rc3 via drm-next.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'tools/testing/selftests/bpf/test_queue_stack_map.h')
-rw-r--r-- | tools/testing/selftests/bpf/test_queue_stack_map.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_queue_stack_map.h b/tools/testing/selftests/bpf/test_queue_stack_map.h new file mode 100644 index 000000000000..295b9b3bc5c7 --- /dev/null +++ b/tools/testing/selftests/bpf/test_queue_stack_map.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (c) 2018 Politecnico di Torino +#include <stddef.h> +#include <string.h> +#include <linux/bpf.h> +#include <linux/if_ether.h> +#include <linux/ip.h> +#include <linux/pkt_cls.h> +#include "bpf_helpers.h" + +int _version SEC("version") = 1; + +struct bpf_map_def __attribute__ ((section("maps"), used)) map_in = { + .type = MAP_TYPE, + .key_size = 0, + .value_size = sizeof(__u32), + .max_entries = 32, + .map_flags = 0, +}; + +struct bpf_map_def __attribute__ ((section("maps"), used)) map_out = { + .type = MAP_TYPE, + .key_size = 0, + .value_size = sizeof(__u32), + .max_entries = 32, + .map_flags = 0, +}; + +SEC("test") +int _test(struct __sk_buff *skb) +{ + void *data_end = (void *)(long)skb->data_end; + void *data = (void *)(long)skb->data; + struct ethhdr *eth = (struct ethhdr *)(data); + __u32 value; + int err; + + if (eth + 1 > data_end) + return TC_ACT_SHOT; + + struct iphdr *iph = (struct iphdr *)(eth + 1); + + if (iph + 1 > data_end) + return TC_ACT_SHOT; + + err = bpf_map_pop_elem(&map_in, &value); + if (err) + return TC_ACT_SHOT; + + iph->daddr = value; + + err = bpf_map_push_elem(&map_out, &iph->saddr, 0); + if (err) + return TC_ACT_SHOT; + + return TC_ACT_OK; +} + +char _license[] SEC("license") = "GPL"; |