From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>
Subject: [PATCH v2 2/3] net/tap: increase the maximum allowable queues
Date: Fri, 11 Oct 2024 19:17:28 -0700 [thread overview]
Message-ID: <20241012021844.536316-3-stephen@networkplumber.org> (raw)
In-Reply-To: <20241012021844.536316-1-stephen@networkplumber.org>
The default of 16 is too low for larger systems.
Upper bound is the maximum number of fd's that can be passed to
secondary process (253) and the maximum number of queue's allowed
by Linux kernel (256). Both these manifest constants, are not
exposed in visible kernel API.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
drivers/net/tap/meson.build | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/tap/meson.build b/drivers/net/tap/meson.build
index 5e5a3ad3c6..4853efb236 100644
--- a/drivers/net/tap/meson.build
+++ b/drivers/net/tap/meson.build
@@ -14,7 +14,8 @@ sources = files(
deps = ['bus_vdev', 'gso', 'hash']
-max_queues = '-DTAP_MAX_QUEUES=16'
+# TAP device is limited by RTE_MP_MAX_FD_NUM
+max_queues = '-DTAP_MAX_QUEUES=253'
cflags += max_queues
require_iova_in_mbuf = false
--
2.45.2
next prev parent reply other threads:[~2024-10-12 2:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-11 17:29 [PATCH 0/3] net/tap: queue limit patches Stephen Hemminger
2024-10-11 17:29 ` [PATCH 1/3] net/tap: handle increase in mp_max_fds Stephen Hemminger
2024-10-11 17:29 ` [PATCH 2/3] net/tap: add static assert to make sure max queues less than fd limit Stephen Hemminger
2024-10-11 17:29 ` [PATCH 3/3] net/tap: increase the maximum allowable queues Stephen Hemminger
2024-10-11 19:02 ` Stephen Hemminger
2024-10-12 1:01 ` [PATCH 0/3] net/tap: queue limit patches Ferruh Yigit
2024-10-12 2:20 ` Stephen Hemminger
2024-10-12 2:17 ` [PATCH v2 " Stephen Hemminger
2024-10-12 2:17 ` [PATCH v2 1/3] net/tap: handle increase in mp_max_fds Stephen Hemminger
2024-10-12 2:17 ` Stephen Hemminger [this message]
2024-10-12 2:17 ` [PATCH v2 3/3] net/tap: remove unnecessary checks in configure Stephen Hemminger
2024-10-13 3:12 ` Ferruh Yigit
2024-10-12 23:53 ` [PATCH v2 0/3] net/tap: queue limit patches Ferruh Yigit
2024-10-13 0:53 ` Stephen Hemminger
2024-10-13 1:32 ` Ferruh Yigit
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