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| author | John Fastabend <john.fastabend@gmail.com> | 2018-05-17 23:16:58 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-05-18 22:44:10 +0200 |
| commit | 303def35f64e37bcd5401d202889f5fbc0241179 (patch) | |
| tree | 2ec1213038df81591e3b99242116a3ae5239e4fe /include | |
| parent | Merge branch 'bpf-nfp-shift-insns' (diff) | |
| download | linux-303def35f64e37bcd5401d202889f5fbc0241179.tar.xz linux-303def35f64e37bcd5401d202889f5fbc0241179.zip | |
bpf: allow sk_msg programs to read sock fields
Currently sk_msg programs only have access to the raw data. However,
it is often useful when building policies to have the policies specific
to the socket endpoint. This allows using the socket tuple as input
into filters, etc.
This patch adds ctx access to the sock fields.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/filter.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h index 9dbcb9d55921..d358d1815c16 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -517,6 +517,7 @@ struct sk_msg_buff { bool sg_copy[MAX_SKB_FRAGS]; __u32 flags; struct sock *sk_redir; + struct sock *sk; struct sk_buff *skb; struct list_head list; }; diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index d94d333a8225..97446bbe2ca5 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -2176,6 +2176,14 @@ enum sk_action { struct sk_msg_md { void *data; void *data_end; + + __u32 family; + __u32 remote_ip4; /* Stored in network byte order */ + __u32 local_ip4; /* Stored in network byte order */ + __u32 remote_ip6[4]; /* Stored in network byte order */ + __u32 local_ip6[4]; /* Stored in network byte order */ + __u32 remote_port; /* Stored in network byte order */ + __u32 local_port; /* stored in host byte order */ }; #define BPF_TAG_SIZE 8 |