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| author | Lawrence Brakmo | 2018-01-26 01:14:11 +0100 |
|---|---|---|
| committer | Alexei Starovoitov | 2018-01-26 01:41:14 +0100 |
| commit | f89013f66d0f1a0dad44c513318efb706399a36b (patch) | |
| tree | 7589bf9c59c29c7fef4bfb2a7f7d98f679715a42 /include/uapi/linux/bpf.h | |
| parent | bpf: Adds field bpf_sock_ops_cb_flags to tcp_sock (diff) | |
| download | kernel-qcow2-linux-f89013f66d0f1a0dad44c513318efb706399a36b.tar.gz kernel-qcow2-linux-f89013f66d0f1a0dad44c513318efb706399a36b.tar.xz kernel-qcow2-linux-f89013f66d0f1a0dad44c513318efb706399a36b.zip | |
bpf: Add sock_ops RTO callback
Adds an optional call to sock_ops BPF program based on whether the
BPF_SOCK_OPS_RTO_CB_FLAG is set in bpf_sock_ops_flags.
The BPF program is passed 2 arguments: icsk_retransmits and whether the
RTO has expired.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index aa128407c44d..c8cecf9cf5bd 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -982,7 +982,8 @@ struct bpf_sock_ops { }; /* Definitions for bpf_sock_ops_cb_flags */ -#define BPF_SOCK_OPS_ALL_CB_FLAGS 0 /* Mask of all currently +#define BPF_SOCK_OPS_RTO_CB_FLAG (1<<0) +#define BPF_SOCK_OPS_ALL_CB_FLAGS 0x1 /* Mask of all currently * supported cb flags */ @@ -1019,6 +1020,11 @@ enum { * a congestion threshold. RTTs above * this indicate congestion */ + BPF_SOCK_OPS_RTO_CB, /* Called when an RTO has triggered. + * Arg1: value of icsk_retransmits + * Arg2: value of icsk_rto + * Arg3: whether RTO has expired + */ }; #define TCP_BPF_IW 1001 /* Set TCP initial congestion window */ |