int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); return LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_RSP(pdu) == LLC_2_PDU_RSP_UA ? 0 : 1; }
int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb) { const struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); return LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_S(pdu) && LLC_S_PDU_RSP(pdu) == LLC_2_PDU_RSP_REJ ? 0 : 1; }
int llc_conn_ac_disc_ind(struct sock *sk, struct sk_buff *skb) { struct llc_conn_state_ev *ev = llc_conn_ev(skb); u8 reason = 0; int rc = 0; if (ev->type == LLC_CONN_EV_TYPE_PDU) { struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); if (LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_RSP(pdu) == LLC_2_PDU_RSP_DM) reason = LLC_DISC_REASON_RX_DM_RSP_PDU; else if (LLC_PDU_IS_CMD(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_CMD(pdu) == LLC_2_PDU_CMD_DISC) reason = LLC_DISC_REASON_RX_DISC_CMD_PDU; } else if (ev->type == LLC_CONN_EV_TYPE_ACK_TMR) reason = LLC_DISC_REASON_ACK_TMR_EXP; else rc = -EINVAL; if (!rc) { ev->reason = reason; ev->ind_prim = LLC_DISC_PRIM; } return rc; }
int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); return LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_S(pdu) && LLC_S_PF_IS_1(pdu) && LLC_S_PDU_RSP(pdu) == LLC_2_PDU_RSP_RNR ? 0 : 1; }
int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); return llc_conn_space(sk, skb) && LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_I(pdu) && LLC_I_GET_NS(pdu) == llc_sk(sk)->vR ? 0 : 1; }
int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb) { const struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); return llc_conn_space(sk, skb) && LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_S(pdu) && LLC_S_PF_IS_0(pdu) && LLC_S_PDU_RSP(pdu) == LLC_2_PDU_RSP_RR ? 0 : 1; }
int llc_sap_ev_rx_test_r(struct llc_sap *sap, struct sk_buff *skb) { struct llc_sap_state_ev *ev = llc_sap_ev(skb); struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_TEST ? 0 : 1; }
int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); u8 vr = llc_sk(sk)->vR; u8 ns = LLC_I_GET_NS(pdu); return LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_I(pdu) && ns != vr && !llc_util_ns_inside_rx_window(ns, vr, llc_sk(sk)->rw) ? 0 : 1; }
int llc_conn_ac_clear_remote_busy_if_f_eq_1(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); if (LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_I(pdu) && LLC_I_PF_IS_1(pdu) && llc_sk(sk)->ack_pf) llc_conn_ac_clear_remote_busy(sk, skb); return 0; }
static int llc_stat_ev_rx_null_dsap_1_xid_r_xid_r_cnt_eq(struct sk_buff *skb) { struct llc_station_state_ev *ev = llc_station_ev(skb); struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); return ev->type == LLC_STATION_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) && /* response PDU */ LLC_PDU_TYPE_IS_U(pdu) && /* U type PDU */ LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_XID && !pdu->dsap && /* NULL DSAP value */ llc_main_station.xid_r_count == 1 ? 0 : 1; }
int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); u8 vr = llc_sk(sk)->vR; u8 ns = LLC_I_GET_NS(pdu); u16 rc = LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_I(pdu) && ns != vr && llc_util_ns_inside_rx_window(ns, vr, llc_sk(sk)->rw) ? 0 : 1; if (!rc) dprintk("%s: matched, state=%d, ns=%d, vr=%d\n", __FUNCTION__, llc_sk(sk)->state, ns, vr); return rc; }
int llc_conn_ac_upd_p_flag(struct sock *sk, struct sk_buff *skb) { struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); if (LLC_PDU_IS_RSP(pdu)) { u8 f_bit; llc_pdu_decode_pf_bit(skb, &f_bit); if (f_bit) { llc_conn_set_p_flag(sk, 0); llc_conn_ac_stop_p_timer(sk, skb); } } return 0; }
int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk, struct sk_buff *skb) { u16 rc = 1; struct llc_pdu_sn *pdu = llc_pdu_sn_hdr(skb); u8 vs = llc_sk(sk)->vS; u8 nr = LLC_I_GET_NR(pdu); if (LLC_PDU_IS_RSP(pdu) && (LLC_PDU_TYPE_IS_I(pdu) || LLC_PDU_TYPE_IS_S(pdu)) && nr != vs && llc_util_nr_inside_tx_window(sk, nr)) { rc = 0; dprintk("%s: matched, state=%d, vs=%d, nr=%d\n", __FUNCTION__, llc_sk(sk)->state, vs, nr); } return rc; }
int llc_conn_ac_rst_ind(struct sock *sk, struct sk_buff *skb) { u8 reason = 0; int rc = 1; struct llc_conn_state_ev *ev = llc_conn_ev(skb); struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); struct llc_opt *llc = llc_sk(sk); switch (ev->type) { case LLC_CONN_EV_TYPE_PDU: if (LLC_PDU_IS_RSP(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_RSP(pdu) == LLC_2_PDU_RSP_FRMR) { reason = LLC_RESET_REASON_LOCAL; rc = 0; } else if (LLC_PDU_IS_CMD(pdu) && LLC_PDU_TYPE_IS_U(pdu) && LLC_U_PDU_CMD(pdu) == LLC_2_PDU_CMD_SABME) { reason = LLC_RESET_REASON_REMOTE; rc = 0; } else { reason = 0; rc = 1; } break; case LLC_CONN_EV_TYPE_ACK_TMR: case LLC_CONN_EV_TYPE_P_TMR: case LLC_CONN_EV_TYPE_REJ_TMR: case LLC_CONN_EV_TYPE_BUSY_TMR: if (llc->retry_count > llc->n2) { reason = LLC_RESET_REASON_LOCAL; rc = 0; } else rc = 1; break; } if (!rc) { ev->reason = reason; ev->ind_prim = LLC_RESET_PRIM; } return rc; }
int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb) { u16 rc = 1; struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); if (LLC_PDU_IS_RSP(pdu)) { if (LLC_PDU_TYPE_IS_I(pdu) || LLC_PDU_TYPE_IS_S(pdu)) rc = 0; else if (LLC_PDU_TYPE_IS_U(pdu)) switch (LLC_U_PDU_RSP(pdu)) { case LLC_2_PDU_RSP_UA: case LLC_2_PDU_RSP_DM: case LLC_2_PDU_RSP_FRMR: rc = 0; break; } } return rc; }