mir/openvswitch
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-10-27 15:18:06 +00:00
Code Issues Releases Wiki Activity

User-Space MPLS actions and matches

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

18
lib/nx-match.c
View File

@@ -573,7 +573,7 @@ nx_put_raw(struct ofpbuf *b, bool oxm, const struct match *match,
int match_len;
int i;
BUILD_ASSERT_DECL(FLOW_WC_SEQ == 18);
BUILD_ASSERT_DECL(FLOW_WC_SEQ == 19);
/* Metadata. */
if (match->wc.masks.in_port) {
@@ -615,6 +615,22 @@ nx_put_raw(struct ofpbuf *b, bool oxm, const struct match *match,
match->wc.masks.vlan_tci);
}
/* MPLS. */
if (eth_type_mpls(flow->dl_type)) {
if (match->wc.masks.mpls_lse & htonl(MPLS_TC_MASK)) {
nxm_put_8(b, OXM_OF_MPLS_TC, mpls_lse_to_tc(flow->mpls_lse));
}
if (match->wc.masks.mpls_lse & htonl(MPLS_BOS_MASK)) {
nxm_put_8(b, OXM_OF_MPLS_BOS, mpls_lse_to_bos(flow->mpls_lse));
}
if (match->wc.masks.mpls_lse & htonl(MPLS_LABEL_MASK)) {
nxm_put_32(b, OXM_OF_MPLS_LABEL,
htonl(mpls_lse_to_label(flow->mpls_lse)));
}
}
/* L3. */
if (flow->dl_type == htons(ETH_TYPE_IP)) {
/* IP. */