From 2317c0de6080bd2ecc6c47c748cbaa309cd4eec5 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 28 Apr 2020 01:23:13 +0200 Subject: conntrack: add support for the IPS_HW_OFFLOAD flag This patch adds support for the IPS_HW_OFFLOAD flag which specifies that this conntrack entry has been offloaded into the hardware. Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nf_conntrack_common.h | 18 ++++++++++++++++-- src/conntrack.c | 4 ++-- 2 files changed, 18 insertions(+), 4 deletions(-) diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h index 8023e5b..16d20a3 100644 --- a/include/linux/netfilter/nf_conntrack_common.h +++ b/include/linux/netfilter/nf_conntrack_common.h @@ -97,6 +97,15 @@ enum ip_conntrack_status { IPS_UNTRACKED_BIT = 12, IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT), +#ifdef __KERNEL__ + /* Re-purposed for in-kernel use: + * Tags a conntrack entry that clashed with an existing entry + * on insert. + */ + IPS_NAT_CLASH_BIT = IPS_UNTRACKED_BIT, + IPS_NAT_CLASH = IPS_UNTRACKED, +#endif + /* Conntrack got a helper explicitly attached via CT target. */ IPS_HELPER_BIT = 13, IPS_HELPER = (1 << IPS_HELPER_BIT), @@ -105,14 +114,19 @@ enum ip_conntrack_status { IPS_OFFLOAD_BIT = 14, IPS_OFFLOAD = (1 << IPS_OFFLOAD_BIT), + /* Conntrack has been offloaded to hardware. */ + IPS_HW_OFFLOAD_BIT = 15, + IPS_HW_OFFLOAD = (1 << IPS_HW_OFFLOAD_BIT), + /* Be careful here, modifying these bits can make things messy, * so don't let users modify them directly. */ IPS_UNCHANGEABLE_MASK = (IPS_NAT_DONE_MASK | IPS_NAT_MASK | IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING | - IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_OFFLOAD), + IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_UNTRACKED | + IPS_OFFLOAD | IPS_HW_OFFLOAD), - __IPS_MAX_BIT = 15, + __IPS_MAX_BIT = 16, }; /* Connection tracking event types */ diff --git a/src/conntrack.c b/src/conntrack.c index f65926b..fb4e5be 100644 --- a/src/conntrack.c +++ b/src/conntrack.c @@ -870,8 +870,8 @@ static struct parse_parameter { size_t size; unsigned int value[8]; } parse_array[PARSE_MAX] = { - { {"ASSURED", "SEEN_REPLY", "UNSET", "FIXED_TIMEOUT", "EXPECTED", "OFFLOAD"}, 6, - { IPS_ASSURED, IPS_SEEN_REPLY, 0, IPS_FIXED_TIMEOUT, IPS_EXPECTED, IPS_OFFLOAD} }, + { {"ASSURED", "SEEN_REPLY", "UNSET", "FIXED_TIMEOUT", "EXPECTED", "OFFLOAD", "HW_OFFLOAD"}, 7, + { IPS_ASSURED, IPS_SEEN_REPLY, 0, IPS_FIXED_TIMEOUT, IPS_EXPECTED, IPS_OFFLOAD, IPS_HW_OFFLOAD} }, { {"ALL", "NEW", "UPDATES", "DESTROY"}, 4, { CT_EVENT_F_ALL, CT_EVENT_F_NEW, CT_EVENT_F_UPD, CT_EVENT_F_DEL } }, { {"xml", "extended", "timestamp", "id", "ktimestamp", "labels", "userspace" }, 7, -- cgit v1.2.3