mirror-linux/include/net
Mina Almasry 170aafe35c netdev: support binding dma-buf to netdevice
Add a netdev_dmabuf_binding struct which represents the
dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
rx queues on the netdevice. On the binding, the dma_buf_attach
& dma_buf_map_attachment will occur. The entries in the sg_table from
mapping will be inserted into a genpool to make it ready
for allocation.

The chunks in the genpool are owned by a dmabuf_chunk_owner struct which
holds the dma-buf offset of the base of the chunk and the dma_addr of
the chunk. Both are needed to use allocations that come from this chunk.

We create a new type that represents an allocation from the genpool:
net_iov. We setup the net_iov allocation size in the
genpool to PAGE_SIZE for simplicity: to match the PAGE_SIZE normally
allocated by the page pool and given to the drivers.

The user can unbind the dmabuf from the netdevice by closing the netlink
socket that established the binding. We do this so that the binding is
automatically unbound even if the userspace process crashes.

The binding and unbinding leaves an indicator in struct netdev_rx_queue
that the given queue is bound, and the binding is actuated by resetting
the rx queue using the queue API.

The netdev_dmabuf_binding struct is refcounted, and releases its
resources only when all the refs are released.

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> # excluding netlink
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240910171458.219195-4-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-09-11 20:44:31 -07:00
..
9p netfs, 9p: Implement helpers for new write code 2024-05-01 18:07:37 +01:00
bluetooth Revert "Bluetooth: MGMT/SMP: Fix address type when using SMP over BREDR/LE" 2024-08-30 17:56:53 -04:00
caif net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
iucv s390/iucv: Correct spelling in iucv.h 2024-08-26 09:37:22 -07:00
libeth libeth: add Tx buffer completion helpers 2024-09-09 13:15:37 -07:00
mana Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-09-05 20:37:20 -07:00
netfilter netfilter: nf_tables: set element timeout update support 2024-09-03 18:19:44 +02:00
netns icmp: icmp_msgs_per_sec and icmp_msgs_burst sysctls become per netns 2024-08-30 11:14:06 -07:00
nfc NFC: Correct spelling in headers 2024-08-26 09:37:23 -07:00
page_pool netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
phonet net: ioctl: Use kernel memory on protocol ioctl callbacks 2023-06-15 22:33:26 -07:00
sctp sctp: Correct spelling in headers 2024-08-26 09:37:23 -07:00
tc_act net/sched: Retire ipt action 2024-01-02 12:41:16 +00:00
6lowpan.h
Space.h net: appletalk: remove cops support 2023-10-04 11:49:20 -07:00
act_api.h net/sched: Add helper macros with module names 2024-02-02 10:57:55 -08:00
addrconf.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
af_ieee802154.h
af_rxrpc.h rxrpc, afs: Allow afs to pin rxrpc_peer objects 2023-12-24 15:22:50 +00:00
af_unix.h af_unix: Remove U_LOCK_GC_LISTENER. 2024-06-25 11:10:18 +02:00
af_vsock.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-15 17:18:52 -07:00
ah.h
amt.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
arp.h neighbour: switch to standard rcu, instead of rcu_bh 2023-03-21 21:32:18 -07:00
atmclip.h
ax25.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-05-14 10:53:19 -07:00
ax88796.h ax88796: Fix some typo in a comment 2022-08-09 22:14:02 -07:00
bareudp.h bareudp: Move definition of struct bareudp_conf to bareudp.c 2021-12-13 12:34:09 +00:00
bond_3ad.h bonding: Correct spelling in headers 2024-08-26 09:37:22 -07:00
bond_alb.h bonding: Correct spelling in headers 2024-08-26 09:37:22 -07:00
bond_options.h bonding: Add independent control state machine 2024-02-06 13:17:54 +01:00
bonding.h bonding: change ipsec_lock from spin lock to mutex 2024-08-27 13:11:37 -07:00
bpf_sk_storage.h
busy_poll.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-29 11:49:10 -07:00
calipso.h
cfg80211-wext.h wifi: cfg80211: Avoid clashing function prototypes 2022-11-16 11:31:47 +02:00
cfg80211.h wifi: cfg80211: fix kernel-doc for per-link data 2024-09-09 11:04:25 +02:00
cfg802154.h mac802154: fix llsec key resources release in mac802154_llsec_key_del 2024-03-06 21:01:26 +01:00
checksum.h net: checksum: drop the linux/uaccess.h include 2023-01-27 11:19:46 +00:00
cipso_ipv4.h netlabel: fix RCU annotation for IPv4 options on socket creation 2024-05-13 14:58:12 -07:00
cls_cgroup.h
codel.h codel: fix kernel-doc notation warnings 2023-07-14 20:39:29 -07:00
codel_impl.h codel: remove unnecessary sock.h include 2021-12-22 15:03:47 -08:00
codel_qdisc.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
compat.h net: copy from user before calling __get_compat_msghdr 2022-07-24 18:39:17 -06:00
datalink.h net: datalink: Remove unused declarations 2023-07-27 17:17:32 -07:00
dcbevent.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
dcbnl.h net: dcb: add helper functions to retrieve PCP and DSCP rewrite maps 2023-01-20 09:33:22 +00:00
devlink.h devlink: Constify the 'table_ops' parameter of devl_dpipe_table_register() 2024-06-05 10:24:57 +01:00
dropreason-core.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
dropreason.h net: openvswitch: add last-action drop reason 2023-08-14 08:01:06 +01:00
dsa.h net: dsa: provide a software untagging function on RX for VLAN-aware bridges 2024-08-16 09:59:32 +01:00
dsa_stubs.h net: dsa: Use conduit and user terms 2023-10-24 13:08:14 -07:00
dscp.h net: add IEEE 802.1q specific helpers 2024-05-08 10:35:09 +01:00
dsfield.h
dst.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
dst_cache.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
dst_metadata.h net: Silence false field-spanning write warning in metadata_dst memcpy 2024-08-20 15:22:17 -07:00
dst_ops.h net: fix __dst_negative_advice() race 2024-05-29 17:34:49 -07:00
eee.h net: add helpers for EEE configuration 2024-03-05 19:21:17 -08:00
erspan.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
esp.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
espintcp.h inet: preserve const qualifier in inet_csk() 2024-04-01 21:27:08 -07:00
ethoc.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
failover.h net: failover: add net device refcount tracker 2021-12-06 16:06:02 -08:00
fib_notifier.h
fib_rules.h fib: remove unnecessary input parameters in fib_default_rule_add 2024-01-03 16:42:48 -08:00
firewire.h firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48() 2022-07-28 22:21:54 -07:00
flow.h inet: shrink struct flowi_common 2023-11-02 09:31:02 +01:00
flow_dissector.h flow_dissector: cleanup FLOW_DISSECTOR_KEY_ENC_FLAGS 2024-07-15 09:14:39 -07:00
flow_offload.h flow_offload: add encapsulation control flag helpers 2024-06-12 17:56:00 -07:00
fou.h bpf,fou: Add bpf_skb_{set,get}_fou_encap kfuncs 2023-04-12 16:40:39 -07:00
fq.h net: fq: Remove unused typedef fq_flow_get_default_t 2023-08-08 15:58:23 -07:00
fq_impl.h wifi: mac80211: add support for restricting netdev features per vif 2022-12-01 15:09:10 +01:00
garp.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
gen_stats.h net: sched: Remove Qdisc::running sequence counter 2021-10-18 12:54:41 +01:00
genetlink.h genetlink: remove linux/genetlink.h 2024-04-01 21:44:34 -07:00
geneve.h net: geneve: fix array of flexible structures warnings 2022-10-31 10:43:04 +00:00
gre.h ip_tunnel: convert __be16 tunnel flags to bitmaps 2024-04-01 10:49:28 +01:00
gro.h net: gro: fix napi_gro_cb zeroed alignment 2024-05-14 10:49:50 -07:00
gro_cells.h
gso.h net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
gtp.h gtp: properly parse extension headers 2024-05-07 01:35:55 +02:00
gue.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
handshake.h net/handshake: Add helpers for parsing incoming TLS Alerts 2023-07-28 14:07:59 -07:00
hotdata.h net: move sysctl_mem_pcpu_rsv to net_hotdata 2024-04-30 18:46:52 -07:00
hwbm.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
icmp.h
ieee8021q.h net: add IEEE 802.1q specific helpers 2024-05-08 10:35:09 +01:00
ieee80211_radiotap.h wifi: radiotap: document ieee80211_get_radiotap_len() return value 2024-05-23 10:19:39 +02:00
ieee802154_netdev.h mac802154: Handle association requests from peers 2023-11-20 11:43:03 +01:00
if_inet6.h ipv6: anycast: complete RCU handling of struct ifacaddr6 2024-02-26 18:40:34 -08:00
ife.h
inet6_connection_sock.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
inet6_hashtables.h inet6: constify 'struct net' parameter of various lookup helpers 2024-08-05 16:27:26 -07:00
inet_common.h net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
inet_connection_sock.h Fix race for duplicate reqsk on identical SYN 2024-06-25 11:37:45 +02:00
inet_dscp.h ipv6: Define dscp_t and stop taking ECN bits into account in fib6-rules 2022-02-07 20:12:45 -08:00
inet_ecn.h net: add skb_get_dsfield() helper 2021-10-15 11:33:08 +01:00
inet_frag.h net: Rename mono_delivery_time to tstamp_type for scalabilty 2024-05-23 14:14:23 -07:00
inet_hashtables.h inet: constify 'struct net' parameter of various lookup helpers 2024-08-05 16:22:45 -07:00
inet_sock.h inet: constify inet_sk_bound_dev_eq() net parameter 2024-08-05 16:22:45 -07:00
inet_timewait_sock.h tcp: remove volatile qualifier on tw_substate 2024-08-28 17:08:16 -07:00
inetpeer.h
ioam6.h net: ioam6: multicast event 2024-02-28 11:19:41 +00:00
ip.h ipv4: Unmask upper DSCP bits in get_rttos() 2024-08-31 17:44:51 +01:00
ip6_checksum.h net: move gro definitions to include/net/gro.h 2021-11-16 13:16:54 +00:00
ip6_fib.h ipv6: introduce dst_rt6_info() helper 2024-04-29 13:32:01 +01:00
ip6_route.h ipv6: fix source address selection with route leak 2024-07-14 07:34:16 -07:00
ip6_tunnel.h ip_tunnel: convert __be16 tunnel flags to bitmaps 2024-04-01 10:49:28 +01:00
ip_fib.h ipv4: Fix user space build failure due to header change 2024-09-04 16:40:33 -07:00
ip_tunnels.h ip_tunnel: Correct spelling in ip_tunnels.h 2024-08-26 09:37:22 -07:00
ip_vs.h ipvs: Correct spelling in comments 2023-04-22 01:39:41 +02:00
ipcomp.h xfrm: ipcomp: add extack to ipcomp{4,6}_init_state 2022-09-29 07:18:00 +02:00
ipconfig.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
ipv6.h ipv6: Correct spelling in ipv6.h 2024-08-26 09:37:22 -07:00
ipv6_frag.h net: dropreason: add SKB_DROP_REASON_FRAG_REASM_TIMEOUT 2022-10-31 20:14:27 -07:00
ipv6_stubs.h ipv6: udp: constify 'struct net' parameter of socket lookups 2024-08-05 16:27:26 -07:00
iw_handler.h wifi: cfg80211: wext: Update spelling and grammar 2024-09-03 11:49:27 +02:00
kcm.h kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-19 18:36:12 -07:00
l3mdev.h
lag.h
lapb.h
lib80211.h wifi: lib80211: Handle const struct lib80211_crypto_ops in lib80211 2024-08-27 10:28:49 +02:00
llc.h llc: fix out-of-bound array index in llc_sk_dev_hash() 2021-11-07 19:25:29 +00:00
llc_c_ac.h net: llc: Remove unused function declarations 2023-08-04 15:33:17 -07:00
llc_c_ev.h net: llc: Remove unused function declarations 2023-08-04 15:33:17 -07:00
llc_c_st.h llc: Constify struct llc_conn_state_trans 2024-07-15 08:51:01 -07:00
llc_conn.h llc: Check netns in llc_estab_match() and llc_listener_match(). 2023-07-20 10:46:28 +02:00
llc_if.h llc/snap: constify dev_addr passing 2021-10-13 09:40:46 -07:00
llc_pdu.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
llc_s_ac.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
llc_s_ev.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
llc_s_st.h llc: Constify struct llc_sap_state_trans 2024-07-15 08:51:19 -07:00
llc_sap.h
lwtunnel.h lwt: Check LWTUNNEL_XMIT_CONTINUE strictly 2023-08-18 16:05:26 +02:00
mac80211.h wifi: mac80211: handle ieee80211_radar_detected() for MLO 2024-09-06 13:01:05 +02:00
mac802154.h mac802154: Correct spelling in mac802154.h 2024-08-30 22:28:15 +02:00
macsec.h macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads 2024-04-25 08:20:54 -07:00
mctp.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-02-29 14:24:56 -08:00
mctpdevice.h mctp: Pass flow data & flow release events to drivers 2021-10-29 13:23:51 +01:00
mip6.h
mld.h
mpls.h
mpls_iptunnel.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
mptcp.h mptcp: fallback to TCP after SYN+MPC drops 2024-09-11 15:57:50 -07:00
mrp.h mrp: introduce active flags to prevent UAF when applicant uninit 2022-11-18 12:14:55 +00:00
ncsi.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
ndisc.h ipv6: eliminate ndisc_ops_is_useropt() 2024-08-12 17:23:57 -07:00
neighbour.h sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
net_debug.h net: add CONFIG_DEBUG_NET 2022-05-11 12:43:10 +01:00
net_failover.h
net_namespace.h net: Don't register pernet_operations if only one of id or size is specified. 2024-08-03 22:38:44 +01:00
net_ratelimit.h
net_trackers.h net: add networking namespace refcount tracker 2021-12-10 06:38:26 -08:00
netdev_queues.h net: qstat: extend kdoc about get_base_stats 2024-06-01 15:11:52 -07:00
netdev_rx_queue.h netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netevent.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
netkit.h bpf, netkit: Add indirect call wrapper for fetching peer dev 2023-11-20 10:15:16 -08:00
netlabel.h netlabel: Correct spelling in netlabel.h 2024-08-26 09:37:22 -07:00
netlink.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
netmem.h netdev: support binding dma-buf to netdevice 2024-09-11 20:44:31 -07:00
netprio_cgroup.h
netrom.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
nexthop.h net: nexthop: Increase weight to u16 2024-08-12 17:50:34 -07:00
nl802154.h ieee802154: Correct spelling in nl802154.h 2024-08-30 22:30:55 +02:00
nsh.h net: NSH: fix kernel-doc notation warning 2023-07-14 20:39:29 -07:00
p8022.h net: 802: Remove unused function declarations 2023-08-04 15:33:50 -07:00
pfcp.h pfcp: always set pfcp metadata 2024-04-01 10:49:28 +01:00
pie.h pie: fix kernel-doc notation warning 2023-07-14 20:39:30 -07:00
ping.h net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294 2023-06-02 09:55:22 +01:00
pkt_cls.h net: sched: Correct spelling in headers 2024-08-26 09:37:23 -07:00
pkt_sched.h net/sched: Add helper macros with module names 2024-02-02 10:57:55 -08:00
pptp.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
proto_memory.h net: move sysctl_mem_pcpu_rsv to net_hotdata 2024-04-30 18:46:52 -07:00
protocol.h ipv6: move tcp_ipv6_hash_secret and udp_ipv6_hash_secret to net_hotdata 2024-03-07 21:12:43 -08:00
psample.h net: psample: fix flag being set in wrong skb 2024-07-11 18:11:31 -07:00
psnap.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
raw.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-04-06 12:01:20 -07:00
rawv6.h ipv6: raw: constify raw_v6_match() socket argument 2023-03-17 08:56:37 +00:00
red.h net: sched: Correct spelling in headers 2024-08-26 09:37:23 -07:00
regulatory.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
request_sock.h tcp: move reqsk_alloc() to inet_connection_sock.c 2024-06-06 15:18:04 +02:00
rose.h net: rose: add netdev ref tracker to 'struct rose_sock' 2022-08-01 11:59:23 -07:00
route.h xfrm: Unmask upper DSCP bits in xfrm_get_tos() 2024-08-31 17:44:51 +01:00
rpl.h ipv6: rpl: Remove pskb(_may)?_pull() in ipv6_rpl_srh_rcv(). 2023-06-19 11:32:58 -07:00
rps.h net: rps: add rps_input_queue_head_add() helper 2024-04-01 11:28:32 +01:00
rsi_91x.h rsi: remove kernel-doc comment marker 2023-07-14 20:39:30 -07:00
rstreason.h tcp: rstreason: introduce SK_RST_REASON_TCP_DISCONNECT_WITH_DATA for active reset 2024-08-07 10:24:46 +01:00
rtnetlink.h rtnetlink: make the "split" NLM_DONE handling generic 2024-06-05 12:34:54 +01:00
rtnh.h
sch_generic.h net/sched: fix false lockdep warning on qdisc root lock 2024-04-26 10:46:41 +02:00
scm.h af_unix: Add dead flag to struct scm_fp_list. 2024-05-10 18:52:45 -07:00
secure_seq.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
seg6.h ipv6: sr: restruct ifdefines 2024-05-30 18:29:38 -07:00
seg6_hmac.h ipv6: sr: restruct ifdefines 2024-05-30 18:29:38 -07:00
seg6_local.h seg6: Use nested-BH locking for seg6_bpf_srh_states. 2024-06-24 16:41:23 -07:00
selftests.h
slhc_vj.h
smc.h net/smc: add operations to merge sndbuf with peer DMB 2024-04-30 13:24:48 +02:00
snmp.h
sock.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
sock_reuseport.h net: core: annotate socks of struct sock_reuseport with __counted_by 2024-08-02 17:16:59 -07:00
stp.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
strparser.h tls: rx: remove the message decrypted tracking 2022-07-18 11:24:10 +01:00
switchdev.h net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-02-16 09:36:37 +00:00
tc_wrapper.h Merge branch 'x86/bugs' into x86/core, to pick up pending changes before dependent patches 2024-02-14 10:49:37 +01:00
tcp.h net/tcp: Move tcp_inbound_hash() from headers 2024-06-12 06:39:04 +01:00
tcp_ao.h net/tcp: Remove tcp_hash_fail() 2024-06-12 06:39:04 +01:00
tcp_states.h tcp: Dump bound-only sockets in inet_diag. 2023-12-04 14:45:26 -08:00
tcx.h bpf: Fix too early release of tcx_entry 2024-07-08 14:07:31 -07:00
timewait_sock.h tcp: get rid of twsk_unique() 2024-05-09 20:25:55 -07:00
tipc.h
tls.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-04-25 12:41:37 -07:00
tls_prot.h net/tls: Add TLS Alert definitions 2023-07-28 14:07:59 -07:00
tls_toe.h
transp_v6.h inet6: Remove unused function declaration udpv6_connect() 2023-08-01 15:06:27 -07:00
tso.h net: tso: inline tso_count_descs() 2022-12-12 15:04:39 -08:00
tun_proto.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
udp.h net: Correct spelling in headers 2024-08-26 09:37:23 -07:00
udp_tunnel.h ip_tunnel: convert __be16 tunnel flags to bitmaps 2024-04-01 10:49:28 +01:00
udplite.h udplite: fix various data-races 2023-09-14 16:16:36 +02:00
vsock_addr.h
vxlan.h vxlan: add support for flowlabel inherit 2023-11-16 22:33:31 +00:00
wext.h
x25.h x25: Correct spelling in x25.h 2024-08-26 09:37:23 -07:00
x25device.h
xdp.h net, xdp: Correct grammar 2023-12-14 16:38:59 +01:00
xdp_priv.h net: add missing includes and forward declarations under net/ 2022-07-22 12:53:22 +01:00
xdp_sock.h net: Optimize xdp_do_flush() with bpf_net_context infos. 2024-07-02 15:26:57 +02:00
xdp_sock_drv.h xsk: use generic DMA sync shortcut instead of a custom one 2024-05-08 08:51:20 +02:00
xfrm.h xfrm: minor update to sdb and xfrm_policy comments 2024-08-28 07:37:13 +02:00
xsk_buff_pool.h xsk: use generic DMA sync shortcut instead of a custom one 2024-05-08 08:51:20 +02:00