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0f92140468
linux/net/core
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Mina Almasry 0f92140468 memory-provider: dmabuf devmem memory provider 
Implement a memory provider that allocates dmabuf devmem in the form of
net_iov.

The provider receives a reference to the struct netdev_dmabuf_binding
via the pool->mp_priv pointer. The driver needs to set this pointer for
the provider in the net_iov.

The provider obtains a reference on the netdev_dmabuf_binding which
guarantees the binding and the underlying mapping remains alive until
the provider is destroyed.

Usage of PP_FLAG_DMA_MAP is required for this memory provide such that
the page_pool can provide the driver with the dma-addrs of the devmem.

Support for PP_FLAG_DMA_SYNC_DEV is omitted for simplicity & p.order !=
0.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Kaiyuan Zhang <kaiyuanz@google.com>
Signed-off-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240910171458.219195-7-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-09-11 20:44:31 -07:00
..
bpf_sk_storage.c netlink: introduce type-checking attribute iteration 2024-03-29 15:06:02 -07:00
datagram.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-07-11 12:58:13 -07:00
dev_addr_lists_test.c net: dev_addr_lists: move locking out of init/exit in kunit 2024-04-15 10:26:35 +01:00
dev_addr_lists.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
dev_ioctl.c netdevice: convert private flags > BIT(31) to bitfields 2024-09-03 11:36:43 +02:00
dev.c netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
dev.h net: softnet_data: Make xmit per task. 2024-06-24 16:41:23 -07:00
devmem.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
devmem.h netdev: netdevice devmem allocator 2024-09-11 20:44:31 -07:00
drop_monitor.c net: add rx_sk to trace_kfree_skb 2024-06-19 12:44:22 +01:00
dst_cache.c net: dst_cache: add two DEBUG_NET warnings 2024-06-03 18:50:09 -07:00
dst.c net: dst: Make dst_destroy() static and return void. 2024-02-06 11:45:53 +01:00
failover.c net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf 2022-12-12 15:18:25 -08:00
fib_notifier.c
fib_rules.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
filter.c bpf: Unmask upper DSCP bits in __bpf_redirect_neigh_v4() 2024-08-31 17:44:51 +01:00
flow_dissector.c net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE 2024-07-18 10:52:17 +02:00
flow_offload.c tc: flower: Enable offload support IPSEC SPI field. 2023-08-02 10:09:32 +01:00
gen_estimator.c net: use unrcu_pointer() helper 2024-06-06 11:52:52 +02:00
gen_stats.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
gro_cells.c net: move netdev_max_backlog to net_hotdata 2024-03-07 21:12:42 -08:00
gro.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
gso.c net: introduce struct net_hotdata 2024-03-07 21:12:41 -08:00
hotdata.c net: move sysctl_mem_pcpu_rsv to net_hotdata 2024-04-30 18:46:52 -07:00
hwbm.c
ieee8021q_helpers.c net: add IEEE 802.1q specific helpers 2024-05-08 10:35:09 +01:00
link_watch.c net: linkwatch: use system_unbound_wq 2024-08-06 12:12:53 -07:00
lwt_bpf.c bpf: lwtunnel: Unmask upper DSCP bits in bpf_lwt_xmit_reroute() 2024-09-09 14:14:52 +01:00
lwtunnel.c xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available 2022-10-12 10:45:51 +02:00
Makefile netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
mp_dmabuf_devmem.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
neighbour.c neighbour: delete redundant judgment statements 2024-08-23 14:27:45 +01:00
net_namespace.c net: Initialise net.core sysctl defaults in preinit_net(). 2024-08-03 22:38:45 +01:00
net_test.c pfcp: always set pfcp metadata 2024-04-01 10:49:28 +01:00
net-procfs.c net: make softnet_data.dropped an atomic_t 2024-04-01 11:28:32 +01:00
net-sysfs.c net: sysfs: Fix weird usage of class's namespace relevant fields 2024-09-09 10:30:52 +01:00
net-sysfs.h
net-traces.c udp6: add a missing call into udp_fail_queue_rcv_skb tracepoint 2023-07-07 09:16:52 +01:00
netclassid_cgroup.c cgroup, netclassid: on modifying netclassid in cgroup, only consider the main process. 2023-10-16 16:36:53 -07:00
netdev_rx_queue.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
netdev-genl-gen.c netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netdev-genl-gen.h netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netdev-genl.c netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netevent.c
netmem_priv.h page_pool: devmem support 2024-09-11 20:44:31 -07:00
netpoll.c netpoll: remove netpoll_srcu 2024-09-06 18:24:59 -07:00
netprio_cgroup.c
of_net.c net: Explicitly include correct DT includes 2023-07-27 20:33:16 -07:00
page_pool_priv.h memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
page_pool_user.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
page_pool.c memory-provider: dmabuf devmem memory provider 2024-09-11 20:44:31 -07:00
pktgen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-29 11:49:10 -07:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2022-03-07 11:31:34 +00:00
request_sock.c tcp: make sure init the accept_queue's spinlocks once 2024-01-19 21:13:25 -08:00
rtnetlink.c netdevice: convert private flags > BIT(31) to bitfields 2024-09-03 11:36:43 +02:00
scm.c af_unix: Add dead flag to struct scm_fp_list. 2024-05-10 18:52:45 -07:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-20 10:14:49 +01:00
selftests.c net: fill in MODULE_DESCRIPTION()s under net/core 2023-10-28 11:29:27 +01:00
skbuff.c page_pool: devmem support 2024-09-11 20:44:31 -07:00
skmsg.c skmsg: Skip zero length skb in sk_msg_recvmsg 2024-07-09 10:24:50 +02:00
sock_destructor.h
sock_diag.c net: use unrcu_pointer() helper 2024-06-06 11:52:52 +02:00
sock_map.c sock_map: avoid race between sock_map_close and sk_psock_put 2024-05-28 12:05:19 +02:00
sock_reuseport.c net: core: annotate socks of struct sock_reuseport with __counted_by 2024-08-02 17:16:59 -07:00
sock.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
stream.c net: Return error from sk_stream_wait_connect() if sk_wait_event() fails 2023-12-15 10:48:51 +00:00
sysctl_net_core.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
timestamping.c net: Change the API of PHY default timestamp to MAC 2024-07-15 08:02:26 -07:00
tso.c net: tso: inline tso_count_descs() 2022-12-12 15:04:39 -08:00
utils.c net: Correct spelling in net/core 2024-08-26 09:37:23 -07:00
xdp.c xdp: fix invalid wait context of page_pool_destroy() 2024-07-14 20:40:21 -07:00