Currently 5-tuple(sip+dip+sport+dport+proto) can't identify a
uniq connection because there may be multi net namespace.
For example, there may be a chance that netns a and netns b all
listen on 127.0.0.1:8080 and the client with same port 40782
connect to them. Without netns number, sock ops program
can't distinguish them.
Using bpf_sock_ops_get_netns helpers to get current connection
netns number to distinguish connections.

Lingpeng Chen (2):
  bpf: Add sock ops get netns helpers
  bpf: Sync uapi bpf.h to tools/

 include/uapi/linux/bpf.h       |  8 +++++++-
 net/core/filter.c              | 18 ++++++++++++++++++
 tools/include/uapi/linux/bpf.h |  8 +++++++-
 3 files changed, 32 insertions(+), 2 deletions(-)


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2.17.1