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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/net/llc_conn.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/llc_conn.h')
-rw-r--r--include/net/llc_conn.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/include/net/llc_conn.h b/include/net/llc_conn.h
new file mode 100644
index 000000000..2c1ea3414
--- /dev/null
+++ b/include/net/llc_conn.h
@@ -0,0 +1,120 @@
+#ifndef LLC_CONN_H
+#define LLC_CONN_H
+/*
+ * Copyright (c) 1997 by Procom Technology, Inc.
+ * 2001, 2002 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ * This program can be redistributed or modified under the terms of the
+ * GNU General Public License as published by the Free Software Foundation.
+ * This program is distributed without any warranty or implied warranty
+ * of merchantability or fitness for a particular purpose.
+ *
+ * See the GNU General Public License for more details.
+ */
+#include <linux/timer.h>
+#include <net/llc_if.h>
+#include <net/sock.h>
+#include <linux/llc.h>
+
+#define LLC_EVENT 1
+#define LLC_PACKET 2
+
+#define LLC2_P_TIME 2
+#define LLC2_ACK_TIME 1
+#define LLC2_REJ_TIME 3
+#define LLC2_BUSY_TIME 3
+
+struct llc_timer {
+ struct timer_list timer;
+ unsigned long expire; /* timer expire time */
+};
+
+struct llc_sock {
+ /* struct sock must be the first member of llc_sock */
+ struct sock sk;
+ struct sockaddr_llc addr; /* address sock is bound to */
+ u8 state; /* state of connection */
+ struct llc_sap *sap; /* pointer to parent SAP */
+ struct llc_addr laddr; /* lsap/mac pair */
+ struct llc_addr daddr; /* dsap/mac pair */
+ struct net_device *dev; /* device to send to remote */
+ netdevice_tracker dev_tracker;
+ u32 copied_seq; /* head of yet unread data */
+ u8 retry_count; /* number of retries */
+ u8 ack_must_be_send;
+ u8 first_pdu_Ns;
+ u8 npta;
+ struct llc_timer ack_timer;
+ struct llc_timer pf_cycle_timer;
+ struct llc_timer rej_sent_timer;
+ struct llc_timer busy_state_timer; /* ind busy clr at remote LLC */
+ u8 vS; /* seq# next in-seq I-PDU tx'd*/
+ u8 vR; /* seq# next in-seq I-PDU rx'd*/
+ u32 n2; /* max nbr re-tx's for timeout*/
+ u32 n1; /* max nbr octets in I PDU */
+ u8 k; /* tx window size; max = 127 */
+ u8 rw; /* rx window size; max = 127 */
+ u8 p_flag; /* state flags */
+ u8 f_flag;
+ u8 s_flag;
+ u8 data_flag;
+ u8 remote_busy_flag;
+ u8 cause_flag;
+ struct sk_buff_head pdu_unack_q; /* PUDs sent/waiting ack */
+ u16 link; /* network layer link number */
+ u8 X; /* a temporary variable */
+ u8 ack_pf; /* this flag indicates what is
+ the P-bit of acknowledge */
+ u8 failed_data_req; /* recognize that already exist a
+ failed llc_data_req_handler
+ (tx_buffer_full or unacceptable
+ state */
+ u8 dec_step;
+ u8 inc_cntr;
+ u8 dec_cntr;
+ u8 connect_step;
+ u8 last_nr; /* NR of last pdu received */
+ u32 rx_pdu_hdr; /* used for saving header of last pdu
+ received and caused sending FRMR.
+ Used for resending FRMR */
+ u32 cmsg_flags;
+ struct hlist_node dev_hash_node;
+};
+
+static inline struct llc_sock *llc_sk(const struct sock *sk)
+{
+ return (struct llc_sock *)sk;
+}
+
+static __inline__ void llc_set_backlog_type(struct sk_buff *skb, char type)
+{
+ skb->cb[sizeof(skb->cb) - 1] = type;
+}
+
+static __inline__ char llc_backlog_type(struct sk_buff *skb)
+{
+ return skb->cb[sizeof(skb->cb) - 1];
+}
+
+struct sock *llc_sk_alloc(struct net *net, int family, gfp_t priority,
+ struct proto *prot, int kern);
+void llc_sk_stop_all_timers(struct sock *sk, bool sync);
+void llc_sk_free(struct sock *sk);
+
+void llc_sk_reset(struct sock *sk);
+
+/* Access to a connection */
+int llc_conn_state_process(struct sock *sk, struct sk_buff *skb);
+void llc_conn_send_pdu(struct sock *sk, struct sk_buff *skb);
+void llc_conn_rtn_pdu(struct sock *sk, struct sk_buff *skb);
+void llc_conn_resend_i_pdu_as_cmd(struct sock *sk, u8 nr, u8 first_p_bit);
+void llc_conn_resend_i_pdu_as_rsp(struct sock *sk, u8 nr, u8 first_f_bit);
+int llc_conn_remove_acked_pdus(struct sock *conn, u8 nr, u16 *how_many_unacked);
+struct sock *llc_lookup_established(struct llc_sap *sap, struct llc_addr *daddr,
+ struct llc_addr *laddr);
+void llc_sap_add_socket(struct llc_sap *sap, struct sock *sk);
+void llc_sap_remove_socket(struct llc_sap *sap, struct sock *sk);
+
+u8 llc_data_accept_state(u8 state);
+void llc_build_offset_table(void);
+#endif /* LLC_CONN_H */