mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-31 14:25:26 +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

8
lib/ofpbuf.c
View File

@@ -29,7 +29,7 @@ ofpbuf_use__(struct ofpbuf *b, void *base, size_t allocated,
b->allocated = allocated;
b->source = source;
b->size = 0;
b->l2 = b->l3 = b->l4 = b->l7 = NULL;
b->l2 = b->l2_5 = b->l3 = b->l4 = b->l7 = NULL;
list_poison(&b->list_node);
b->private_p = NULL;
}
@@ -176,6 +176,9 @@ ofpbuf_clone_with_headroom(const struct ofpbuf *buffer, size_t headroom)
if (buffer->l2) {
new_buffer->l2 = (char *) buffer->l2 + data_delta;
}
if (buffer->l2_5) {
new_buffer->l2_5 = (char *) buffer->l2_5 + data_delta;
}
if (buffer->l3) {
new_buffer->l3 = (char *) buffer->l3 + data_delta;
}
@@ -295,6 +298,9 @@ ofpbuf_resize__(struct ofpbuf *b, size_t new_headroom, size_t new_tailroom)
if (b->l2) {
b->l2 = (char *) b->l2 + data_delta;
}
if (b->l2_5) {
b->l2_5 = (char *) b->l2_5 + data_delta;
}
if (b->l3) {
b->l3 = (char *) b->l3 + data_delta;
}