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-rw-r--r--include/net/dropreason-core.h7
-rw-r--r--include/net/tcp.h3
-rw-r--r--include/uapi/linux/snmp.h1
3 files changed, 10 insertions, 1 deletions
diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h
index e4fdc6b54cef..bea77934a235 100644
--- a/include/net/dropreason-core.h
+++ b/include/net/dropreason-core.h
@@ -40,6 +40,7 @@
FN(TCP_OFOMERGE) \
FN(TCP_RFC7323_PAWS) \
FN(TCP_RFC7323_PAWS_ACK) \
+ FN(TCP_RFC7323_TW_PAWS) \
FN(TCP_RFC7323_TSECR) \
FN(TCP_LISTEN_OVERFLOW) \
FN(TCP_OLD_SEQUENCE) \
@@ -284,6 +285,12 @@ enum skb_drop_reason {
*/
SKB_DROP_REASON_TCP_RFC7323_PAWS_ACK,
/**
+ * @SKB_DROP_REASON_TCP_RFC7323_TW_PAWS: PAWS check, socket is in
+ * TIME_WAIT state.
+ * Corresponds to LINUX_MIB_PAWS_TW_REJECTED.
+ */
+ SKB_DROP_REASON_TCP_RFC7323_TW_PAWS,
+ /**
* @SKB_DROP_REASON_TCP_RFC7323_TSECR: PAWS check, invalid TSEcr.
* Corresponds to LINUX_MIB_TSECRREJECTED.
*/
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 4450c384ef17..5078ad868fee 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -427,7 +427,8 @@ enum tcp_tw_status {
enum tcp_tw_status tcp_timewait_state_process(struct inet_timewait_sock *tw,
struct sk_buff *skb,
const struct tcphdr *th,
- u32 *tw_isn);
+ u32 *tw_isn,
+ enum skb_drop_reason *drop_reason);
struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
struct request_sock *req, bool fastopen,
bool *lost_race, enum skb_drop_reason *drop_reason);
diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h
index ec47f9b68a1b..1d234d7e1892 100644
--- a/include/uapi/linux/snmp.h
+++ b/include/uapi/linux/snmp.h
@@ -188,6 +188,7 @@ enum
LINUX_MIB_PAWSESTABREJECTED, /* PAWSEstabRejected */
LINUX_MIB_TSECRREJECTED, /* TSEcrRejected */
LINUX_MIB_PAWS_OLD_ACK, /* PAWSOldAck */
+ LINUX_MIB_PAWS_TW_REJECTED, /* PAWSTimewait */
LINUX_MIB_DELAYEDACKS, /* DelayedACKs */
LINUX_MIB_DELAYEDACKLOCKED, /* DelayedACKLocked */
LINUX_MIB_DELAYEDACKLOST, /* DelayedACKLost */