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| author | YAMAMOTO Takashi <yamamoto@valinux.co.jp> | 2014-10-14 12:28:39 +0900 |
|---|---|---|
| committer | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2014-10-14 13:34:25 +0900 |
| commit | 73e336e74ea1de79b82f3bec47f9fb97e3aaf5fd (patch) | |
| tree | cab9eb5e2550a9e7e1268fadb8599fbbc0630675 | |
| parent | dcf6ddd8283f5ede4c5a1be51b1ba8968a0ab299 (diff) | |
oxm_fields: Add comments
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
| -rw-r--r-- | ryu/ofproto/oxm_fields.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ryu/ofproto/oxm_fields.py b/ryu/ofproto/oxm_fields.py index 6c1565ab..4aa390ee 100644 --- a/ryu/ofproto/oxm_fields.py +++ b/ryu/ofproto/oxm_fields.py @@ -225,6 +225,7 @@ def parse(mod, buf, offset): oxm_len = mod.oxm_tlv_header_extract_length(header) oxm_class = oxm_type >> 7 if oxm_class == OFPXMC_EXPERIMENTER: + # Experimenter OXMs have 64-bit header. (vs 32-bit for other OXMs) exp_hdr_pack_str = '!I' # experimenter_id (exp_id, ) = struct.unpack_from(exp_hdr_pack_str, buf, offset + hdr_len) @@ -242,6 +243,8 @@ def parse(mod, buf, offset): else: num = oxm_type exp_hdr_len = 0 + # Note: OXM payload length (oxm_len) includes Experimenter ID (exp_hdr_len) + # for experimenter OXMs. value_offset = offset + hdr_len + exp_hdr_len value_len = oxm_len - exp_hdr_len value_pack_str = '!%ds' % value_len |