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opnsense-src/sys/net
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Andrew Gallatin 6d49b41ee8 iflib: Add pfil hooks 
As with mlx5en, the idea is to drop unwanted traffic as early
in receive as possible, before mbufs are allocated and anything
is passed up the stack.  This can save considerable CPU time
when a machine is under a flooding style DOS attack.

The major change here is to remove the unneeded abstraction where
callers of rxd_frag_to_sd() get back a pointer to the mbuf ring, and
are responsible for NULL'ing that mbuf themselves. Now this happens
directly in rxd_frag_to_sd(), and it returns an mbuf. This allows us
to use the decision (and potentially mbuf) returned by the pfil
hooks. The driver can now recycle mbufs to avoid re-allocation when
packets are dropped.

Reviewed by:	marius  (shurd and erj also provided feedback)
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D19645
2019-04-24 13:32:04 +00:00
..
altq Reduce the time it takes the kernel to install a new PF config containing a large number of queues 2019-02-11 05:17:31 +00:00
bpf.c Convert allocation of bpf_if in bpfattach2 from M_NOWAIT to M_WAITOK 2019-03-19 10:29:32 +00:00
bpf.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
bpf_buffer.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
bpf_buffer.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
bpf_filter.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
bpf_jitter.c Make UMA and malloc(9) return non-executable memory in most cases. 2018-06-13 17:04:41 +00:00
bpf_jitter.h Make UMA and malloc(9) return non-executable memory in most cases. 2018-06-13 17:04:41 +00:00
bpf_zerocopy.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
bpf_zerocopy.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
bpfdesc.h Move BPFIF_* macro definitions into .c file, where struct bpf_if is 2018-06-19 10:34:45 +00:00
bridgestp.c bridge: Fix panic if the STP root is removed 2019-03-15 11:21:20 +00:00
bridgestp.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
dlt.h Re-apply r190640. 2018-05-31 09:11:21 +00:00
ethernet.h net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
firewire.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
ieee8023ad_lacp.c if_media: Add new 2.5G/5G/25G/40G/50G/100G/200G/400G media types 2018-08-22 18:19:56 +00:00
ieee8023ad_lacp.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
ieee_oui.h net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
if.c Track device's NUMA domain in ifnet & alloc ifnet from NUMA local memory 2019-04-22 19:24:21 +00:00
if.h Plug routing sysctl leaks. 2018-11-26 13:42:18 +00:00
if_arp.h Improve ARP logging. 2019-03-09 01:12:59 +00:00
if_bridge.c net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
if_bridgevar.h Allow different bridge types to coexist 2018-05-11 05:00:40 +00:00
if_clone.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_clone.h iflib(9): Add support for cloning pseudo interfaces 2018-05-11 20:08:28 +00:00
if_dead.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_debug.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_disc.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_dl.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_edsc.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_enc.c New pfil(9) KPI together with newborn pfil API and control utility. 2019-01-31 23:01:03 +00:00
if_enc.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_epair.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_ethersubr.c net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
if_fwsubr.c Improve copy-and-pasted versions of SIOCGIFADDR. 2018-03-27 20:51:49 +00:00
if_gif.c Add handling for appearing/disappearing of ingress addresses to if_gif(4). 2018-10-21 18:06:15 +00:00
if_gif.h Add handling for appearing/disappearing of ingress addresses to if_gif(4). 2018-10-21 18:06:15 +00:00
if_gre.c Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
if_gre.h Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
if_ipsec.c Allow configuration of several ipsec interfaces with the same tunnel 2018-11-16 14:21:57 +00:00
if_ipsec.h Merge projects/ipsec into head/. 2017-02-06 08:49:57 +00:00
if_lagg.c Use a dedicated malloc type for lagg(4)'s structures. 2019-03-28 21:00:54 +00:00
if_lagg.h CK: update consumers to use CK macros across the board 2018-05-24 23:21:23 +00:00
if_llatbl.c Mechanical cleanup of epoch(9) usage in network stack. 2019-01-09 01:11:19 +00:00
if_llatbl.h CK: update consumers to use CK macros across the board 2018-05-24 23:21:23 +00:00
if_llc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_loop.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
if_me.c Add the check that current VNET is ready and access to srchash is allowed. 2018-10-23 13:11:45 +00:00
if_media.c Finish removing FDDI and tokenring media support. 2018-04-23 21:10:33 +00:00
if_media.h if_media: Add new 2.5G/5G/25G/40G/50G/100G/200G/400G media types 2018-08-22 18:19:56 +00:00
if_mib.c
if_mib.h
if_pflog.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_pfsync.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_sppp.h
if_spppfr.c
if_spppsubr.c Replace read_random(9) with more appropriate arc4rand(9) KPIs 2019-04-04 01:02:50 +00:00
if_stf.c Do not perform DAD on stf(4) interfaces. 2019-03-30 18:00:44 +00:00
if_tap.c Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
if_tap.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_tapvar.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
if_tun.c tun(4): Defer clearing TUN_OPEN until much later 2019-04-23 17:28:28 +00:00
if_tun.h
if_types.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
if_var.h Track device's NUMA domain in ifnet & alloc ifnet from NUMA local memory 2019-04-22 19:24:21 +00:00
if_vlan.c This commit adds the missing release mechanism for the 2019-02-13 14:57:59 +00:00
if_vlan_var.h Add the ability to look up the 3b PCP of a VLAN interface. Use it in 2018-08-16 23:46:38 +00:00
if_vxlan.c net: adjust randomized address bits 2019-04-17 17:18:43 +00:00
if_vxlan.h Add support for IPv6 scoped addresses to vxlan 2017-12-30 04:03:53 +00:00
ifdi_if.m iflib(9): Add support for cloning pseudo interfaces 2018-05-11 20:08:28 +00:00
iflib.c iflib: Add pfil hooks 2019-04-24 13:32:04 +00:00
iflib.h iflib: mark isc_driver_version as constant 2019-03-19 23:44:26 +00:00
iflib_clone.c iflib(9): Add support for cloning pseudo interfaces 2018-05-11 20:08:28 +00:00
iflib_private.h Use busdma unconditionally in iflib 2018-11-27 20:01:05 +00:00
ifq.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
mp_ring.c mp_ring: avoid items offset difference between iflib and mp_ring 2019-01-03 23:06:05 +00:00
mp_ring.h mp_ring: avoid items offset difference between iflib and mp_ring 2019-01-03 23:06:05 +00:00
mppc.h
mppcc.c
mppcd.c
netisr.c Use the new VNET_DEFINE_STATIC macro when we are defining static VNET 2018-07-24 16:35:52 +00:00
netisr.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netisr_internal.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
netmap.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
netmap_legacy.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
netmap_user.h netmap: add support for multiple host rings 2019-03-18 12:22:23 +00:00
netmap_virt.h netmap: align codebase to the current upstream (760279cfb2730a585) 2018-12-05 11:57:16 +00:00
paravirt.h
pfil.c Most Ethernet drivers that potentially can run a pfil(9) hook with 2019-03-10 17:20:09 +00:00
pfil.h Most Ethernet drivers that potentially can run a pfil(9) hook with 2019-03-10 17:20:09 +00:00
pfkeyv2.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pfvar.h pf :Use counter(9) in pf tables. 2019-03-15 11:08:44 +00:00
ppp_defs.h
radix.c Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
radix.h Fix typo. 2018-06-16 19:21:09 +00:00
radix_mpath.c Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
radix_mpath.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_cb.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_cb.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
raw_usrreq.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
rndis.h rndis: Add LINK_SPEED_CHANGE status 2017-07-24 03:59:50 +00:00
route.c Mechanical cleanup of epoch(9) usage in network stack. 2019-01-09 01:11:19 +00:00
route.h Plug routing sysctl leaks. 2018-11-26 13:42:18 +00:00
route_var.h Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9). 2018-06-16 08:26:23 +00:00
rss_config.c rss: Remove never defined UDP_IPV4_EX 2017-10-11 06:08:01 +00:00
rss_config.h rss: Remove never defined UDP_IPV4_EX 2017-10-11 06:08:01 +00:00
rtsock.c When sending a routing message, don't allow the user to set the 2019-04-14 10:18:14 +00:00
sff8436.h
sff8472.h ifconfig(8): Display extended compliance code string for SFP transceivers 2017-12-05 18:42:07 +00:00
slcompress.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
slcompress.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
toeplitz.c
toeplitz.h
vnet.c With more excessive use of modules, more kernel parts working with 2018-10-30 20:45:15 +00:00
vnet.h Don't mark module data as static on RISC-V. 2018-09-12 08:05:33 +00:00