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Lorenzo Bianconi fdc13979f9 bpf, devmap: Move drop error path to devmap for XDP_REDIRECT 
We want to change the current ndo_xdp_xmit drop semantics because it will
allow us to implement better queue overflow handling. This is working
towards the larger goal of a XDP TX queue-hook. Move XDP_REDIRECT error
path handling from each XDP ethernet driver to devmap code. According to
the new APIs, the driver running the ndo_xdp_xmit pointer, will break tx
loop whenever the hw reports a tx error and it will just return to devmap
caller the number of successfully transmitted frames. It will be devmap
responsibility to free dropped frames.

Move each XDP ndo_xdp_xmit capable driver to the new APIs:

- veth
- virtio-net
- mvneta
- mvpp2
- socionext
- amazon ena
- bnxt
- freescale (dpaa2, dpaa)
- xen-frontend
- qede
- ice
- igb
- ixgbe
- i40e
- mlx5
- ti (cpsw, cpsw-new)
- tun
- sfc

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Camelia Groza <camelia.groza@nxp.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Shay Agroskin <shayagr@amazon.com>
Link: https://lore.kernel.org/bpf/ed670de24f951cfd77590decf0229a0ad7fd12f6.1615201152.git.lorenzo@kernel.org
2021-03-18 16:38:51 +01:00
..
preload
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-02-02 14:21:31 -08:00
arraymap.c
bpf: Add arraymap support for bpf_for_each_map_elem() helper
2021-02-26 13:23:52 -08:00
bpf_inode_storage.c
bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]
2021-02-26 11:51:48 -08:00
bpf_iter.c
bpf: Add bpf_for_each_map_elem() helper
2021-02-26 13:23:52 -08:00
bpf_local_storage.c
bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]
2021-02-26 11:51:48 -08:00
bpf_lru_list.c
bpf_lru_list: Read double-checked variable once without lock
2021-02-10 15:54:26 -08:00
bpf_lru_list.h
bpf: Fix a typo "inacitve" -> "inactive"
2020-04-06 21:54:10 +02:00
bpf_lsm.c
bpf: Enable task local storage for tracing programs
2021-02-26 11:51:47 -08:00
bpf_struct_ops_types.h
bpf: tcp: Support tcp_congestion_ops in bpf
2020-01-09 08:46:18 -08:00
bpf_struct_ops.c
bpf: Eliminate rlimit-based memory accounting for bpf_struct_ops maps
2020-12-02 18:32:46 -08:00
bpf_task_storage.c
bpf: Make symbol 'bpf_task_storage_busy' static
2021-03-16 12:24:20 -07:00
btf.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-03-09 18:07:05 -08:00
cgroup.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-02-16 13:14:06 -08:00
core.c
bpf: Explicitly zero-extend R0 after 32-bit cmpxchg
2021-03-04 19:06:03 -08:00
cpumap.c
bpf, xdp: Restructure redirect actions
2021-03-10 01:06:34 +01:00
devmap.c
bpf, devmap: Move drop error path to devmap for XDP_REDIRECT
2021-03-18 16:38:51 +01:00
disasm.c
bpf: Change 'BPF_ADD' to 'BPF_AND' in print_bpf_insn()
2021-01-27 22:23:46 +01:00
disasm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295
2019-06-05 17:36:38 +02:00
dispatcher.c
bpf: Remove bpf_image tree
2020-03-13 12:49:52 -07:00
hashtab.c
kernel/bpf/: Fix misspellings using codespell tool
2021-03-16 12:22:20 -07:00
helpers.c
bpf: Add bpf_for_each_map_elem() helper
2021-02-26 13:23:52 -08:00
inode.c
fs: make helpers idmap mount aware
2021-01-24 14:27:20 +01:00
local_storage.c
bpf: Eliminate rlimit-based memory accounting for cgroup storage maps
2020-12-02 18:32:46 -08:00
lpm_trie.c
bpf: Eliminate rlimit-based memory accounting for lpm_trie maps
2020-12-02 18:32:46 -08:00
Makefile
bpf: Enable task local storage for tracing programs
2021-02-26 11:51:47 -08:00
map_in_map.c
bpf: Relax max_entries check for most of the inner map types
2020-08-28 15:41:30 +02:00
map_in_map.h
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
map_iter.c
bpf: Implement link_query callbacks in map element iterators
2020-08-21 14:01:39 -07:00
net_namespace.c
bpf: Add support for forced LINK_DETACH command
2020-08-01 20:38:28 -07:00
offload.c
bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
2020-02-17 16:53:49 +01:00
percpu_freelist.c
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
percpu_freelist.h
bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI
2020-10-06 00:04:11 +02:00
prog_iter.c
bpf: Refactor bpf_iter_reg to have separate seq_info member
2020-07-25 20:16:32 -07:00
queue_stack_maps.c
bpf: Eliminate rlimit-based memory accounting for queue_stack_maps maps
2020-12-02 18:32:46 -08:00
reuseport_array.c
bpf: Eliminate rlimit-based memory accounting for reuseport_array maps
2020-12-02 18:32:47 -08:00
ringbuf.c
bpf: Eliminate rlimit-based memory accounting for bpf ringbuffer
2020-12-02 18:32:47 -08:00
stackmap.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-02-10 13:30:12 -08:00
syscall.c
bpf: Count the number of times recursion was prevented
2021-02-11 16:19:20 +01:00
sysfs_btf.c
bpf: Load and verify kernel module BTFs
2020-11-10 15:25:53 -08:00
task_iter.c
bpf: Introduce task_vma bpf_iter
2021-02-12 12:56:53 -08:00
tnum.c
bpf: Verifier, do explicit ALU32 bounds tracking
2020-03-30 14:59:53 -07:00
trampoline.c
bpf: Count the number of times recursion was prevented
2021-02-11 16:19:20 +01:00
verifier.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-03-09 18:07:05 -08:00