The default value for RTE_PKTMBUF_HEADROOM used to be set in
config/rte_config.h. This patch removes it from the file and
instead, a meson option, pkt_mbuf_headroom, is introduced to make
headroom tunable from the build process.
Signed-off-by: Parthakumar Roy <parthakumar....@ibm.com>
---
config/meson.build | 1 +
config/rte_config.h | 1 -
meson_options.txt | 2 ++
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/config/meson.build b/config/meson.build
index a9ccd56deb..f90ff0a290 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -346,6 +346,7 @@ dpdk_conf.set('RTE_MAX_ETHPORTS',
get_option('max_ethports'))
dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet'))
dpdk_conf.set('RTE_ENABLE_STDATOMIC', get_option('enable_stdatomic'))
dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp'))
+dpdk_conf.set('RTE_PKTMBUF_HEADROOM', get_option('pkt_mbuf_headroom'))
# values which have defaults which may be overridden
dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64)
dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64)
diff --git a/config/rte_config.h b/config/rte_config.h
index da265d7dd2..505199f2fe 100644
--- a/config/rte_config.h
+++ b/config/rte_config.h
@@ -51,7 +51,6 @@
/* mbuf defines */
#define RTE_MBUF_DEFAULT_MEMPOOL_OPS "ring_mp_mc"
-#define RTE_PKTMBUF_HEADROOM 128
/* ether defines */
#define RTE_MAX_QUEUES_PER_PORT 1024
diff --git a/meson_options.txt b/meson_options.txt
index 50a9d3669d..68f378c401 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -40,6 +40,8 @@ option('machine', type: 'string', value: 'auto', description:
'Alias of cpu_instruction_set.')
option('max_ethports', type: 'integer', value: 32, description:
'maximum number of Ethernet devices')
+option('pkt_mbuf_headroom', type: 'integer', value: 128, description:
+ 'number of bytes skipped on Rx at the start of the packet buffer to
leave room for additional packet headers')
option('max_lcores', type: 'string', value: 'default', description:
'Set maximum number of cores/threads supported by EAL; "default" is
different per-arch, "detect" detects the number of cores on the build machine.')
option('max_numa_nodes', type: 'string', value: 'default', description:
--
2.34.1
