The TAP and XDP driver both are limited to only 8 queues when
because of the small limit imposed by EAL. Increase the limit
now since this release allows changing ABI.
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
doc/guides/rel_notes/release_24_11.rst | 5 +++++
lib/eal/include/rte_eal.h | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/doc/guides/rel_notes/release_24_11.rst
b/doc/guides/rel_notes/release_24_11.rst
index 0ff70d9057..5af70e04c5 100644
--- a/doc/guides/rel_notes/release_24_11.rst
+++ b/doc/guides/rel_notes/release_24_11.rst
@@ -100,6 +100,11 @@ ABI Changes
Also, make sure to start the actual text at the margin.
=======================================================
+* The maximum number of file descriptors that can be passed to a secondary
process
+ has been increased from 8 to 253 (which is the maximum possible with Unix
domain
+ socket). This allows for more queues when using software devices such as TAP
+ and XDP.
+
Known Issues
------------
diff --git a/lib/eal/include/rte_eal.h b/lib/eal/include/rte_eal.h
index c2256f832e..c826e143f1 100644
--- a/lib/eal/include/rte_eal.h
+++ b/lib/eal/include/rte_eal.h
@@ -155,7 +155,7 @@ int rte_eal_primary_proc_alive(const char
*config_file_path);
*/
bool rte_mp_disable(void);
-#define RTE_MP_MAX_FD_NUM 8 /* The max amount of fds */
+#define RTE_MP_MAX_FD_NUM 253 /* The max amount of fds (see SCM_MAX_FD)
*/
#define RTE_MP_MAX_NAME_LEN 64 /* The max length of action name */
#define RTE_MP_MAX_PARAM_LEN 256 /* The max length of param */
struct rte_mp_msg {
--
2.45.2
