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Jiayu Hu b166d4f30b gso: support UDP/IPv4 fragmentation 
This patch adds GSO support for UDP/IPv4 packets. Supported packets
may include a single VLAN tag. UDP/IPv4 GSO doesn't check if input
packets have correct checksums, and doesn't update checksums for
output packets (the responsibility for this lies with the application).
Additionally, UDP/IPv4 GSO doesn't process IP fragmented packets.

UDP/IPv4 GSO uses two chained MBUFs, one direct MBUF and one indrect
MBUF, to organize an output packet. The direct MBUF stores the packet
header, while the indirect mbuf simply points to a location within the
original packet's payload. Consequently, use of UDP GSO requires
multi-segment MBUF support in the TX functions of the NIC driver.

If a packet is GSO'd, UDP/IPv4 GSO reduces its MBUF refcnt by 1. As a
result, when all of its GSOed segments are freed, the packet is freed
automatically.

Signed-off-by: Jiayu Hu <jiayu.hu@intel.com>
Acked-by: Xiao Wang <xiao.w.wang@intel.com>
2018-07-11 23:45:20 +02:00
..
librte_acl build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_bbdev bbdev: split queue groups 2018-05-10 17:46:20 +01:00
librte_bitratestats bitratestats: fix library version in meson build 2018-03-28 00:07:35 +02:00
librte_bpf bpf: add missed experimental tags 2018-05-14 17:42:43 +02:00
librte_cfgfile build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_cmdline cmdline: remove useless intermediate buffer 2018-06-27 18:25:30 +02:00
librte_compat compat: relicense some files 2018-02-06 23:13:47 +01:00
librte_compressdev compressdev: add huffman encoding flags 2018-07-11 00:57:51 +02:00
librte_cryptodev cryptodev: add asymmetric capability 2018-07-11 03:57:25 +02:00
librte_distributor build: set compat lib as universal dependency 2018-01-30 21:59:00 +01:00
librte_eal service: add attribute API 2018-07-11 23:43:23 +02:00
librte_efd build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_ethdev examples: fix RSS hash function configuration 2018-07-05 15:46:48 +02:00
librte_eventdev cryptodev: rename experimental private data APIs 2018-07-11 03:57:24 +02:00
librte_flow_classify flow_classify: remove void pointer cast 2018-03-30 14:08:43 +02:00
librte_gro build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_gso gso: support UDP/IPv4 fragmentation 2018-07-11 23:45:20 +02:00
librte_hash hash: explicit casts for truncation in CRC32c 2018-05-13 22:45:37 +02:00
librte_ip_frag ip_frag: fix some debug logs 2018-05-14 21:14:49 +02:00
librte_jobstats build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_kni fix ethdev port id validation 2018-04-18 00:37:05 +02:00
librte_kvargs use SPDX tag for 6WIND copyrighted files 2018-05-25 10:47:06 +02:00
librte_latencystats ethdev: remove experimental flag of ports enumeration 2018-04-27 18:00:24 +01:00
librte_lpm lpm: fix allocation of an existing object 2018-02-01 00:35:06 +01:00
librte_mbuf mbuf: fix typo in IPv6 macro comment 2018-06-15 18:03:33 +02:00
librte_member build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_mempool mempool: fix virtual address population 2018-05-15 16:30:14 +02:00
librte_meter lib: clear experimental version tag in linker scripts 2018-05-14 03:37:28 +02:00
librte_metrics metrics: fix potential missing string termination 2018-04-04 17:33:08 +02:00
librte_net net: rename u16 to fix shadowed declaration 2018-06-27 22:55:54 +02:00
librte_pci use SPDX tag for 6WIND copyrighted files 2018-05-25 10:47:06 +02:00
librte_pdump pdump: use generic multi-process channel 2018-04-18 01:26:21 +02:00
librte_pipeline lib: clear experimental version tag in linker scripts 2018-05-14 03:37:28 +02:00
librte_port build: remove checks for non-optional libraries 2018-04-17 16:09:43 +02:00
librte_power build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_rawdev rawdev: remove dead code 2018-05-14 01:01:11 +02:00
librte_reorder build: replace license text with SPDX tag 2018-01-30 21:58:59 +01:00
librte_ring ring: remove signed type flip-flopping 2018-05-21 00:20:16 +02:00
librte_sched lib: clear experimental version tag in linker scripts 2018-05-14 03:37:28 +02:00
librte_security security: fix crash on destroy null session 2018-07-11 00:57:51 +02:00
librte_table table: add dedicated params struct for cuckoo hash 2018-05-08 16:19:58 +02:00
librte_timer eal: make semantics of lcore role function more intuitive 2018-04-26 16:58:18 +02:00
librte_vhost vhost: add notification for packed ring 2018-07-10 23:19:29 +02:00
Makefile bpf: add BPF loading and execution framework 2018-05-12 00:35:15 +02:00
meson.build build: fix for host clang and cross gcc 2018-07-11 21:14:21 +02:00