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1c601d829a
linux/net
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Jesper Dangaard Brouer 1c601d829a bpf: cpumap xdp_buff to skb conversion and allocation 
This patch makes cpumap functional, by adding SKB allocation and
invoking the network stack on the dequeuing CPU.

For constructing the SKB on the remote CPU, the xdp_buff in converted
into a struct xdp_pkt, and it mapped into the top headroom of the
packet, to avoid allocating separate mem.  For now, struct xdp_pkt is
just a cpumap internal data structure, with info carried between
enqueue to dequeue.

If a driver doesn't have enough headroom it is simply dropped, with
return code -EOVERFLOW.  This will be picked up the xdp tracepoint
infrastructure, to allow users to catch this.

V2: take into account xdp->data_meta

V4:
 - Drop busypoll tricks, keeping it more simple.
 - Skip RPS and Generic-XDP-recursive-reinjection, suggested by Alexei

V5: correct RCU read protection around __netif_receive_skb_core.

V6: Setting TASK_RUNNING vs TASK_INTERRUPTIBLE based on talk with Rik van Riel

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-18 12:12:18 +01:00
..
6lowpan
9p net/9p: switch p9_fd_read to kernel_write 2017-09-04 19:05:16 -04:00
802 net: introduce __skb_put_[zero, data, u8] 2017-06-20 13:30:14 -04:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-05 18:19:22 -07:00
appletalk networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
atm net: atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
ax25 net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t 2017-07-04 22:35:19 +01:00
batman-adv This cleanup patchset includes the following patches: 2017-10-06 10:12:52 -07:00
bluetooth Revert "Bluetooth: Add option for disabling legacy ioctl interfaces" 2017-09-28 13:20:32 -07:00
bpf bpf: add meta pointer for direct access 2017-09-26 13:36:44 -07:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-09 20:11:09 -07:00
caif net: convert sock.sk_wmem_alloc from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
can rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
ceph libceph: don't allow bidirectional swap of pg-upmap-items 2017-09-19 20:34:29 +02:00
core bpf: cpumap xdp_buff to skb conversion and allocation 2017-10-18 12:12:18 +01:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp net: dccp: mark expected switch fall-throughs 2017-10-16 21:15:21 +01:00
decnet ipv6: only update __use and lastusetime once per jiffy at most 2017-10-16 21:08:30 +01:00
dns_resolver
dsa net: dsa: remove .set_addr 2017-10-14 18:30:06 -07:00
ethernet networking: make skb_push & __skb_push return void pointers 2017-06-16 11:48:40 -04:00
hsr net/hsr: Check skb_put_padto() return value 2017-08-22 13:40:23 -07:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-05 20:03:35 -07:00
ife
ipv4 net: core: rcu-ify rtnl af_ops 2017-10-16 21:26:40 +01:00
ipv6 ipv6: check fn before doing FIB6_SUBTREE(fn) 2017-10-16 21:06:12 +01:00
ipx net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
iucv iucv: Convert sk_wmem_alloc accesses to refcount_t. 2017-07-03 02:31:22 -07:00
kcm kcm: Remove redundant unlikely() 2017-09-26 09:54:06 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-15 20:23:23 -07:00
l2tp l2tp: fix l2tp_eth module loading 2017-10-01 22:35:07 -07:00
l3mdev
lapb net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
llc net, llc: convert llc_sap.refcnt from atomic_t to refcount_t 2017-07-04 22:35:15 +01:00
mac80211 mac80211: don't track HT capability changes 2017-10-13 14:29:02 +02:00
mac802154 mac802154: Fix MAC header and payload encrypted 2017-09-20 13:37:16 +02:00
mpls ip_tunnel: fix building with NET_IP_TUNNEL=m 2017-10-12 12:21:11 -07:00
ncsi net/ncsi: fix ncsi_vlan_rx_{add,kill}_vid references 2017-09-05 09:11:45 -07:00
netfilter netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1' 2017-10-09 15:18:04 +02:00
netlabel
netlink netlink: do not set cb_running if dump's start() errs 2017-10-09 10:27:49 -07:00
netrom net, netrom: convert nr_node.refcount from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
nfc net: nfc: llcp_core: use setup_timer() helper. 2017-09-25 13:19:20 -07:00
nsh nsh: add GSO support 2017-08-29 15:16:52 -07:00
openvswitch openvswitch: add ct_clear action 2017-10-10 16:38:34 -07:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-05 18:19:22 -07:00
phonet net: phonet: mark phonet_protocol as const 2017-10-07 23:15:08 +01:00
psample networking: make skb_put & friends return void pointers 2017-06-16 11:48:39 -04:00
qrtr net: qrtr: Support decoding incoming v2 packets 2017-10-11 15:28:39 -07:00
rds RDS: IB: Initialize max_items based on underlying device attributes 2017-10-05 21:16:33 -07:00
rfkill
rose
rxrpc rxrpc: Make service connection lookup always check for retry 2017-09-05 14:39:17 -07:00
sched net: sched: propagate q and parent from caller down to tcf_fill_node 2017-10-16 21:00:41 +01:00
sctp sctp: make array sctp_sched_ops static 2017-10-11 20:18:25 -07:00
smc net/smc: dev_put for netdev after usage of ib_query_gid() 2017-10-12 12:20:27 -07:00
strparser strparser: initialize all callbacks 2017-08-24 21:57:50 -07:00
sunrpc sunrpc: remove redundant initialization of sock 2017-10-01 18:51:30 -04:00
switchdev net: switchdev: Remove bridge bypass support from switchdev 2017-08-07 14:48:48 -07:00
tipc tipc: fix rebasing error 2017-10-16 21:28:36 +01:00
tls tls: make tls_sw_free_resources static 2017-09-14 09:55:21 -07:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-21 17:06:42 -07:00
vmw_vsock VSOCK: add sock_diag interface 2017-10-05 18:44:17 -07:00
wimax
wireless Three fixes for the recently added new code: 2017-10-14 18:36:46 -07:00
x25 X25: constify null_x25_address 2017-08-03 09:13:51 -07:00
xfrm xfrm: don't call xfrm_policy_cache_flush under xfrm_state_lock 2017-09-28 09:39:05 +02:00
compat.c net: compat: assert the size of cmsg copied in is as expected 2017-09-20 15:36:18 -07:00
Kconfig net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros. 2017-09-04 13:25:20 +02:00
Makefile nsh: add GSO support 2017-08-29 15:16:52 -07:00
socket.c net: fixes for skb_send_sock 2017-08-16 11:27:52 -07:00
sysctl_net.c