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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/smc/smc_llc.h
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@@ -28,6 +28,7 @@
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 enum smc_llc_msg_type {
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 	SMC_LLC_CONFIRM_LINK		= 0x01,
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 	SMC_LLC_ADD_LINK		= 0x02,
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+	SMC_LLC_ADD_LINK_CONT		= 0x03,
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 	SMC_LLC_DELETE_LINK		= 0x04,
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 	SMC_LLC_CONFIRM_RKEY		= 0x06,
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 	SMC_LLC_TEST_LINK		= 0x07,
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@@ -35,20 +36,74 @@
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 	SMC_LLC_DELETE_RKEY		= 0x09,
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 };
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+#define smc_link_downing(state) \
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+	(cmpxchg(state, SMC_LNK_ACTIVE, SMC_LNK_INACTIVE) == SMC_LNK_ACTIVE)
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+
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+/* LLC DELETE LINK Request Reason Codes */
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+#define SMC_LLC_DEL_LOST_PATH		0x00010000
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+#define SMC_LLC_DEL_OP_INIT_TERM	0x00020000
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+#define SMC_LLC_DEL_PROG_INIT_TERM	0x00030000
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+#define SMC_LLC_DEL_PROT_VIOL		0x00040000
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+#define SMC_LLC_DEL_NO_ASYM_NEEDED	0x00050000
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+/* LLC DELETE LINK Response Reason Codes */
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+#define SMC_LLC_DEL_NOLNK	0x00100000  /* Unknown Link ID (no link) */
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+#define SMC_LLC_DEL_NOLGR	0x00200000  /* Unknown Link Group */
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+
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+/* returns a usable link of the link group, or NULL */
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+static inline struct smc_link *smc_llc_usable_link(struct smc_link_group *lgr)
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+{
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+	int i;
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+
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+	for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++)
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+		if (smc_link_usable(&lgr->lnk[i]))
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+			return &lgr->lnk[i];
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+	return NULL;
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+}
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+
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+/* set the termination reason code for the link group */
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+static inline void smc_llc_set_termination_rsn(struct smc_link_group *lgr,
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+					       u32 rsn)
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+{
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+	if (!lgr->llc_termination_rsn)
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+		lgr->llc_termination_rsn = rsn;
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+}
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+
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 /* transmit */
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 int smc_llc_send_confirm_link(struct smc_link *lnk,
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 			      enum smc_llc_reqresp reqresp);
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 int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
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+			  struct smc_link *link_new,
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 			  enum smc_llc_reqresp reqresp);
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-int smc_llc_send_delete_link(struct smc_link *link,
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-			     enum smc_llc_reqresp reqresp, bool orderly);
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+int smc_llc_send_delete_link(struct smc_link *link, u8 link_del_id,
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+			     enum smc_llc_reqresp reqresp, bool orderly,
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+			     u32 reason);
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+void smc_llc_srv_delete_link_local(struct smc_link *link, u8 del_link_id);
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+void smc_llc_lgr_init(struct smc_link_group *lgr, struct smc_sock *smc);
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+void smc_llc_lgr_clear(struct smc_link_group *lgr);
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 int smc_llc_link_init(struct smc_link *link);
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-void smc_llc_link_active(struct smc_link *link, int testlink_time);
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-void smc_llc_link_deleting(struct smc_link *link);
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-void smc_llc_link_inactive(struct smc_link *link);
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-void smc_llc_link_clear(struct smc_link *link);
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-int smc_llc_do_confirm_rkey(struct smc_link *link,
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+void smc_llc_link_active(struct smc_link *link);
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+void smc_llc_link_clear(struct smc_link *link, bool log);
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+int smc_llc_do_confirm_rkey(struct smc_link *send_link,
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 			    struct smc_buf_desc *rmb_desc);
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+int smc_llc_do_delete_rkey(struct smc_link_group *lgr,
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+			   struct smc_buf_desc *rmb_desc);
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+int smc_llc_flow_initiate(struct smc_link_group *lgr,
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+			  enum smc_llc_flowtype type);
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+void smc_llc_flow_stop(struct smc_link_group *lgr, struct smc_llc_flow *flow);
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+int smc_llc_eval_conf_link(struct smc_llc_qentry *qentry,
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+			   enum smc_llc_reqresp type);
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+void smc_llc_link_set_uid(struct smc_link *link);
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+void smc_llc_save_peer_uid(struct smc_llc_qentry *qentry);
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+struct smc_llc_qentry *smc_llc_wait(struct smc_link_group *lgr,
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+				    struct smc_link *lnk,
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+				    int time_out, u8 exp_msg);
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+struct smc_llc_qentry *smc_llc_flow_qentry_clr(struct smc_llc_flow *flow);
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+void smc_llc_flow_qentry_del(struct smc_llc_flow *flow);
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+void smc_llc_send_link_delete_all(struct smc_link_group *lgr, bool ord,
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+				  u32 rsn);
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+int smc_llc_cli_add_link(struct smc_link *link, struct smc_llc_qentry *qentry);
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+int smc_llc_srv_add_link(struct smc_link *link);
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+void smc_llc_add_link_local(struct smc_link *link);
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 int smc_llc_init(void) __init;
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 #endif /* SMC_LLC_H */