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User-Space MPLS actions and matches

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This patch implements use-space datapath and non-datapath code
to match and use the datapath API set out in Leo Alterman's patch
"user-space datapath: Add basic MPLS support to kernel".

The resulting MPLS implementation supports:
* Pushing a single MPLS label
* Poping a single MPLS label
* Modifying an MPLS lable using set-field or load actions
  that act on the label value, tc and bos bit.
* There is no support for manipulating the TTL
  this is considered future work.

The single-level push pop limitation is implemented by processing
push, pop and set-field/load actions in order and discarding information
that would require multiple levels of push/pop to be supported.

e.g.
   push,push -> the first push is discarded
   pop,pop -> the first pop is discarded

This patch is based heavily on work by Ravi K.

Cc: Ravi K <rkerur@gmail.com>
Reviewed-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Simon Horman
2013-01-25 16:22:07 +09:00
committed by Ben Pfaff
parent d224e35014
commit b02475c53b
29 changed files with 1223 additions and 61 deletions
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6
lib/match.h
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@@ -78,6 +78,12 @@ void match_set_vlan_vid(struct match *, ovs_be16);
void match_set_vlan_vid_masked(struct match *, ovs_be16 vid, ovs_be16 mask);
void match_set_any_pcp(struct match *);
void match_set_dl_vlan_pcp(struct match *, uint8_t);
void match_set_any_mpls_label(struct match *);
void match_set_mpls_label(struct match *, ovs_be32);
void match_set_any_mpls_tc(struct match *);
void match_set_mpls_tc(struct match *, uint8_t);
void match_set_any_mpls_bos(struct match *);
void match_set_mpls_bos(struct match *, uint8_t);
void match_set_tp_src(struct match *, ovs_be16);
void match_set_tp_src_masked(struct match *, ovs_be16 port, ovs_be16 mask);
void match_set_tp_dst(struct match *, ovs_be16);