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| author | brakmo | 2019-05-29 01:59:37 +0200 |
|---|---|---|
| committer | Alexei Starovoitov | 2019-06-01 01:41:29 +0200 |
| commit | e7a3160d092aa4dd7fb2ef23335cb3a98400aec6 (patch) | |
| tree | 09c100a83ac1c6942ec343d9778933e75d5e764b /samples | |
| parent | bpf: cgroup inet skb programs can return 0 to 3 (diff) | |
| download | kernel-qcow2-linux-e7a3160d092aa4dd7fb2ef23335cb3a98400aec6.tar.gz kernel-qcow2-linux-e7a3160d092aa4dd7fb2ef23335cb3a98400aec6.tar.xz kernel-qcow2-linux-e7a3160d092aa4dd7fb2ef23335cb3a98400aec6.zip | |
bpf: Update __cgroup_bpf_run_filter_skb with cn
For egress packets, __cgroup_bpf_fun_filter_skb() will now call
BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY() instead of PROG_CGROUP_RUN_ARRAY()
in order to propagate congestion notifications (cn) requests to TCP
callers.
For egress packets, this function can return:
NET_XMIT_SUCCESS (0) - continue with packet output
NET_XMIT_DROP (1) - drop packet and notify TCP to call cwr
NET_XMIT_CN (2) - continue with packet output and notify TCP
to call cwr
-EPERM - drop packet
For ingress packets, this function will return -EPERM if any attached
program was found and if it returned != 1 during execution. Otherwise 0
is returned.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples')
0 files changed, 0 insertions, 0 deletions