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diff --git a/sys/kern/uipc_ktls.c b/sys/kern/uipc_ktls.c
--- a/sys/kern/uipc_ktls.c
+++ b/sys/kern/uipc_ktls.c
@@ -1082,6 +1082,69 @@
sb->sb_ccc));
}
+/*
+ * Return information about the pending TLS data in a socket
+ * buffer. On return, 'seqno' is set to the sequence number
+ * of the next TLS record to be received, 'resid' is set to
+ * the amount of bytes still needed for the last pending
+ * record. The function returns 'false' if the last pending
+ * record contains a partial TLS header. In that case, 'resid'
+ * is the number of bytes needed to complete the TLS header.
+ */
+bool
+ktls_pending_rx_info(struct sockbuf *sb, uint64_t *seqnop, size_t *residp)
+{
+ struct tls_record_layer hdr;
+ struct mbuf *m;
+ uint64_t seqno;
+ size_t resid;
+ u_int offset, record_len;
+
+ SOCKBUF_LOCK_ASSERT(sb);
+ MPASS(sb->sb_flags & SB_TLS_RX);
+ seqno = sb->sb_tls_seqno;
+ resid = sb->sb_tlscc;
+ m = sb->sb_mtls;
+ offset = 0;
+
+ if (resid == 0) {
+ *seqnop = seqno;
+ *residp = 0;
+ return (true);
+ }
+
+ for (;;) {
+ seqno++;
+
+ if (resid < sizeof(hdr)) {
+ *seqnop = seqno;
+ *residp = sizeof(hdr) - resid;
+ return (false);
+ }
+
+ m_copydata(m, offset, sizeof(hdr), (void *)&hdr);
+
+ record_len = sizeof(hdr) + ntohs(hdr.tls_length);
+ if (resid <= record_len) {
+ *seqnop = seqno;
+ *residp = record_len - resid;
+ return (true);
+ }
+ resid -= record_len;
+
+ while (record_len != 0) {
+ if (m->m_len - offset > record_len) {
+ offset += record_len;
+ break;
+ }
+
+ record_len -= (m->m_len - offset);
+ offset = 0;
+ m = m->m_next;
+ }
+ }
+}
+
int
ktls_enable_rx(struct socket *so, struct tls_enable *en)
{
diff --git a/sys/sys/ktls.h b/sys/sys/ktls.h
--- a/sys/sys/ktls.h
+++ b/sys/sys/ktls.h
@@ -224,6 +224,7 @@
#ifdef RATELIMIT
int ktls_modify_txrtlmt(struct ktls_session *tls, uint64_t max_pacing_rate);
#endif
+bool ktls_pending_rx_info(struct sockbuf *sb, uint64_t *seqnop, size_t *residp);
static inline struct ktls_session *
ktls_hold(struct ktls_session *tls)

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