Increase default mbuf size and code simplification/cleanup

mbuf size was setup to achieve the best performance i.e.
using the smallest mbuf and not segmenting packets.
However this resulted in complex code, much dependent of the way
the pmd are working e.g. a change(fix) in recent dpdk i40e
implementation caused a 1782 (=1518+8+256) bytes mbuf to be too
small to hold a 1518 bytes packets.
Hence this change simplifies the mbuf size selection at the price
of a potential decreases in performance - as more memory is now used.
Except if jumbo frames are used, the mbuf size will now be the same
for all modes. The packets will not be segmented except if jumbo
frames are enabled.
If jumbo frames are enabled, packets are by default segmented, except
if the mbuf size is configured big enough in the config file.

Change-Id: I222fcac7a65c0d221d5d422f419deb9c0f864172
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
Signed-off-by: Deepak S <deepak.s@linux.intel.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/VNFs/DPPD-PROX/task_init.h b/VNFs/DPPD-PROX/task_init.h
index a8ac14c9..5186826a 100644
--- a/VNFs/DPPD-PROX/task_init.h
+++ b/VNFs/DPPD-PROX/task_init.h
@@ -80,7 +80,6 @@ struct task_init {
 	size_t size;
 	uint16_t     flag_req_data; /* flags from prox_shared.h */
 	uint64_t     flag_features;
-	uint32_t mbuf_size;
 	LIST_ENTRY(task_init) entries;
 };
 
@@ -106,7 +105,6 @@ struct task_args {
 	struct lcore_cfg       *lconf;
 	uint32_t               nb_mbuf;
 	uint32_t               mbuf_size;
-	uint8_t    	       mbuf_size_set_explicitely;
 	uint32_t               nb_cache_mbuf;
 	uint8_t                nb_slave_threads;
 	uint8_t		       nb_worker_threads;