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bf0f90d92d
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Steve Yang bf0f90d92d ethdev: fix max Rx packet length check 
Ethdev is using default Ethernet overhead to decide if provided
'max_rx_pkt_len' value is bigger than max (non jumbo) MTU value,
and limits it to MAX if it is.

Since the application/driver used Ethernet overhead is different than
the ethdev one, check result is wrong.

If the driver is using Ethernet overhead bigger than the default one,
the provided 'max_rx_pkt_len' is trimmed down, and in the driver when
correct Ethernet overhead is used to convert back, the resulting MTU is
less than the intended one, causing some packets to be dropped.

Like,
app     -> max_rx_pkt_len = 1500/*mtu*/ + 22/*overhead*/ = 1522
ethdev  -> 1522 > 1518/*MAX*/; max_rx_pkt_len = 1518
driver  -> MTU = 1518 - 22 = 1496
Packets with size 1497-1500 are dropped although intention is to be able
to send/receive them.

The fix is to make ethdev use the correct Ethernet overhead for port,
instead of default one.

Fixes: 59d0ecdbf0 ("ethdev: MTU accessors")
Cc: stable@dpdk.org

Signed-off-by: Steve Yang <stevex.yang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
2021-01-19 03:30:14 +01:00
..
librte_acl build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_bbdev build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_bitratestats build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_bpf bpf: use helper to install headers 2020-10-22 14:15:19 +02:00
librte_cfgfile build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_cmdline cmdline: avoid name clash with Windows system types 2020-11-05 17:49:00 +01:00
librte_compressdev build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_cryptodev cryptodev: add enqueue and dequeue callbacks 2021-01-19 18:05:44 +01:00
librte_distributor build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_eal fbarray: fix overlap check 2021-01-19 13:12:59 +01:00
librte_efd efd: fix tailq entry leak in error path 2020-10-22 22:07:15 +02:00
librte_ethdev ethdev: fix max Rx packet length check 2021-01-19 03:30:14 +01:00
librte_eventdev eventdev: remove software Rx timestamp 2020-11-03 15:28:26 +01:00
librte_fib fib6: improve AVX512 lookup performance 2021-01-13 22:13:37 +01:00
librte_flow_classify build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_graph build: standardize component names and defines 2020-10-19 22:15:34 +02:00
librte_gro gro: fix packet type detection with IPv6 tunnel 2020-11-14 10:56:30 +01:00
librte_gso gso: support VXLAN UDP/IPv4 2021-01-15 11:31:28 +01:00
librte_hash hash: fix check of parameter 2020-10-29 16:45:17 +01:00
librte_ip_frag ip_frag: remove padding length of fragment 2021-01-15 11:31:28 +01:00
librte_ipsec build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_jobstats build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_kni build: align wording of non-support reasons 2020-11-20 16:05:35 +01:00
librte_kvargs build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_latencystats latency: switch Rx timestamp to dynamic mbuf field 2020-11-03 16:21:15 +01:00
librte_lpm lpm/arm: support SVE 2021-01-14 16:42:25 +01:00
librte_mbuf mbuf: add C++ include guard for dynamic fields header 2021-01-11 15:34:21 +01:00
librte_member build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_mempool build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_meter build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_metrics metrics: fix memory leak on allocation failure 2020-11-03 22:45:24 +01:00
librte_net ethdev: update GTP headers 2021-01-19 03:30:13 +01:00
librte_node node: switch IPv4 metadata to dynamic mbuf field 2020-10-31 16:13:10 +01:00
librte_pci build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_pdump pdump: cleanup logs and variables 2021-01-19 15:24:46 +01:00
librte_pipeline pipeline: fix multiple SWX emit pattern detection 2020-11-15 16:46:37 +01:00
librte_port build: replace use of old build macros 2020-10-19 22:15:44 +02:00
librte_power build: align wording of non-support reasons 2020-11-20 16:05:35 +01:00
librte_rawdev build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_rcu rcu: use EAL memory barrier API 2021-01-11 15:34:21 +01:00
librte_regexdev regexdev: add resource limit reached flag 2021-01-12 23:31:39 +01:00
librte_reorder reorder: switch sequence number to dynamic mbuf field 2020-10-31 22:14:30 +01:00
librte_rib rib: fix insertion in some cases 2020-12-15 10:08:39 +01:00
librte_ring ring: add zero copy API 2020-10-29 14:13:31 +01:00
librte_sched build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_security security: switch metadata to dynamic mbuf field 2020-10-31 16:13:11 +01:00
librte_stack build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_table table: fix exact match SWX table lookup 2020-11-13 13:55:07 +01:00
librte_telemetry build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_timer build: remove library name from version map file name 2020-10-19 22:13:59 +02:00
librte_vhost vhost: enhance async enqueue for small packets 2021-01-13 18:51:58 +01:00
meson.build cfgfile: build on Windows 2021-01-17 23:21:14 +01:00