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Message-Id: <20220117205613.26153-1-nicolas.dichtel@6wind.com>
Date: Mon, 17 Jan 2022 21:56:13 +0100
From: Nicolas Dichtel <nicolas.dichtel@...nd.com>
To: fw@...len.de, pablo@...filter.org
Cc: netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH nf-next] nfqueue: enable to get skb->priority
This info could be useful to improve traffic analysis.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
include/uapi/linux/netfilter/nfnetlink_queue.h | 1 +
net/netfilter/nfnetlink_queue.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/uapi/linux/netfilter/nfnetlink_queue.h b/include/uapi/linux/netfilter/nfnetlink_queue.h
index aed90c4df0c8..ef7c97f21a15 100644
--- a/include/uapi/linux/netfilter/nfnetlink_queue.h
+++ b/include/uapi/linux/netfilter/nfnetlink_queue.h
@@ -61,6 +61,7 @@ enum nfqnl_attr_type {
NFQA_SECCTX, /* security context string */
NFQA_VLAN, /* nested attribute: packet vlan info */
NFQA_L2HDR, /* full L2 header */
+ NFQA_PRIORITY, /* skb->priority */
__NFQA_MAX
};
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index ea2d9c2a44cf..48d7a59c6482 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -402,6 +402,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
+ nla_total_size(sizeof(u_int32_t)) /* ifindex */
#endif
+ nla_total_size(sizeof(u_int32_t)) /* mark */
+ + nla_total_size(sizeof(u_int32_t)) /* priority */
+ nla_total_size(sizeof(struct nfqnl_msg_packet_hw))
+ nla_total_size(sizeof(u_int32_t)) /* skbinfo */
+ nla_total_size(sizeof(u_int32_t)); /* cap_len */
@@ -559,6 +560,10 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
nla_put_be32(skb, NFQA_MARK, htonl(entskb->mark)))
goto nla_put_failure;
+ if (entskb->priority &&
+ nla_put_be32(skb, NFQA_PRIORITY, htonl(entskb->priority)))
+ goto nla_put_failure;
+
if (indev && entskb->dev &&
skb_mac_header_was_set(entskb) &&
skb_mac_header_len(entskb) != 0) {
--
2.33.0
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