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net: ipv6: ioam6: new feature tunsrc

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This patch provides a new feature (i.e., "tunsrc") for the tunnel (i.e.,
"encap") mode of ioam6. Just like seg6 already does, except it is
attached to a route. The "tunsrc" is optional: when not provided (by
default), the automatic resolution is applied. Using "tunsrc" when
possible has a benefit: performance. See the comparison:
 - before (= "encap" mode): https://ibb.co/bNCzvf7
 - after (= "encap" mode with "tunsrc"): https://ibb.co/PT8L6yq

Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Justin Iurman
2024-08-17 15:18:18 +02:00
committed by Paolo Abeni
parent 924b8bea87
commit 273f8c1420
2 changed files with 63 additions and 8 deletions
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6
include/uapi/linux/ioam6_iptunnel.h
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@@ -50,6 +50,12 @@ enum {
IOAM6_IPTUNNEL_FREQ_K, /* u32 */
IOAM6_IPTUNNEL_FREQ_N, /* u32 */
/* Tunnel src address.
* For encap,auto modes.
* Optional (automatic if not provided).
*/
IOAM6_IPTUNNEL_SRC, /* struct in6_addr */
__IOAM6_IPTUNNEL_MAX,
};