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| author | Zahari Doychev <zdoychev@maxlinear.com> | 2023-06-08 12:56:46 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-06-12 17:01:45 -0700 |
| commit | d7ad70b5ef5ab8dedaa403e0e5c711ca1aa8cb14 (patch) | |
| tree | 87156e91babe91d5171d59a1ed4b4760694b5291 /net | |
| parent | 3a2cb45ca0ccb5dab9b701f50cfd981f8dfd1673 (diff) | |
| download | linux-stable-d7ad70b5ef5ab8dedaa403e0e5c711ca1aa8cb14.tar.gz linux-stable-d7ad70b5ef5ab8dedaa403e0e5c711ca1aa8cb14.tar.bz2 linux-stable-d7ad70b5ef5ab8dedaa403e0e5c711ca1aa8cb14.zip | |
net: flow_dissector: add support for cfm packets
Add support for dissecting cfm packets. The cfm packet header
fields maintenance domain level and opcode can be dissected.
Signed-off-by: Zahari Doychev <zdoychev@maxlinear.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/flow_dissector.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 481ca4080cbd..85a2d0d9bd39 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -558,6 +558,30 @@ __skb_flow_dissect_arp(const struct sk_buff *skb, } static enum flow_dissect_ret +__skb_flow_dissect_cfm(const struct sk_buff *skb, + struct flow_dissector *flow_dissector, + void *target_container, const void *data, + int nhoff, int hlen) +{ + struct flow_dissector_key_cfm *key, *hdr, _hdr; + + if (!dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_CFM)) + return FLOW_DISSECT_RET_OUT_GOOD; + + hdr = __skb_header_pointer(skb, nhoff, sizeof(*key), data, hlen, &_hdr); + if (!hdr) + return FLOW_DISSECT_RET_OUT_BAD; + + key = skb_flow_dissector_target(flow_dissector, FLOW_DISSECTOR_KEY_CFM, + target_container); + + key->mdl_ver = hdr->mdl_ver; + key->opcode = hdr->opcode; + + return FLOW_DISSECT_RET_OUT_GOOD; +} + +static enum flow_dissect_ret __skb_flow_dissect_gre(const struct sk_buff *skb, struct flow_dissector_key_control *key_control, struct flow_dissector *flow_dissector, @@ -1400,6 +1424,12 @@ proto_again: break; } + case htons(ETH_P_CFM): + fdret = __skb_flow_dissect_cfm(skb, flow_dissector, + target_container, data, + nhoff, hlen); + break; + default: fdret = FLOW_DISSECT_RET_OUT_BAD; break; |