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| author | Stanislav Fomichev <sdf@google.com> | 2019-04-22 08:55:44 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-04-23 18:36:33 +0200 |
| commit | 089b19a9204fc090793d389a265f54124eacb05d (patch) | |
| tree | 66e9a7497cc7c7444866bda214ea14bd6b66f1ae /net/bpf | |
| parent | 7e6e185c74dd8a8dc539300c079adc6bc27045d6 (diff) | |
| download | linux-089b19a9204fc090793d389a265f54124eacb05d.tar.gz linux-089b19a9204fc090793d389a265f54124eacb05d.tar.bz2 linux-089b19a9204fc090793d389a265f54124eacb05d.zip | |
flow_dissector: switch kernel context to struct bpf_flow_dissector
struct bpf_flow_dissector has a small subset of sk_buff fields that
flow dissector BPF program is allowed to access and an optional
pointer to real skb. Real skb is used only in bpf_skb_load_bytes
helper to read non-linear data.
The real motivation for this is to be able to call flow dissector
from eth_get_headlen context where we don't have an skb and need
to dissect raw bytes.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'net/bpf')
| -rw-r--r-- | net/bpf/test_run.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 2221573dacdb..006ad865f7fb 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -382,7 +382,6 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, u32 repeat = kattr->test.repeat; struct bpf_flow_keys flow_keys; u64 time_start, time_spent = 0; - struct bpf_skb_data_end *cb; u32 retval, duration; struct sk_buff *skb; struct sock *sk; @@ -423,9 +422,6 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog, current->nsproxy->net_ns->loopback_dev); skb_reset_network_header(skb); - cb = (struct bpf_skb_data_end *)skb->cb; - cb->qdisc_cb.flow_keys = &flow_keys; - if (!repeat) repeat = 1; |