From 10ebd8556b7990499c896a550e3d416b444211e6 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 02:23:07 +0000
Subject: [PATCH] add led
---
kernel/net/smc/smc_cdc.h | 96 ++++++++++++++++++++++++++++++------------------
1 files changed, 60 insertions(+), 36 deletions(-)
diff --git a/kernel/net/smc/smc_cdc.h b/kernel/net/smc/smc_cdc.h
index 34d2e14..696cc11 100644
--- a/kernel/net/smc/smc_cdc.h
+++ b/kernel/net/smc/smc_cdc.h
@@ -48,21 +48,31 @@
struct smc_cdc_producer_flags prod_flags;
struct smc_cdc_conn_state_flags conn_state_flags;
u8 reserved[18];
-} __packed; /* format defined in RFC7609 */
+};
+
+/* SMC-D cursor format */
+union smcd_cdc_cursor {
+ struct {
+ u16 wrap;
+ u32 count;
+ struct smc_cdc_producer_flags prod_flags;
+ struct smc_cdc_conn_state_flags conn_state_flags;
+ } __packed;
+#ifdef KERNEL_HAS_ATOMIC64
+ atomic64_t acurs; /* for atomic processing */
+#else
+ u64 acurs; /* for atomic processing */
+#endif
+} __aligned(8);
/* CDC message for SMC-D */
struct smcd_cdc_msg {
struct smc_wr_rx_hdr common; /* Type = 0xFE */
u8 res1[7];
- u16 prod_wrap;
- u32 prod_count;
- u8 res2[2];
- u16 cons_wrap;
- u32 cons_count;
- struct smc_cdc_producer_flags prod_flags;
- struct smc_cdc_conn_state_flags conn_state_flags;
+ union smcd_cdc_cursor prod;
+ union smcd_cdc_cursor cons;
u8 res3[8];
-} __packed;
+} __aligned(8);
static inline bool smc_cdc_rxed_any_close(struct smc_connection *conn)
{
@@ -87,23 +97,6 @@
}
}
-/* SMC cursors are 8 bytes long and require atomic reading and writing */
-static inline u64 smc_curs_read(union smc_host_cursor *curs,
- struct smc_connection *conn)
-{
-#ifndef KERNEL_HAS_ATOMIC64
- unsigned long flags;
- u64 ret;
-
- spin_lock_irqsave(&conn->acurs_lock, flags);
- ret = curs->acurs;
- spin_unlock_irqrestore(&conn->acurs_lock, flags);
- return ret;
-#else
- return atomic64_read(&curs->acurs);
-#endif
-}
-
/* Copy cursor src into tgt */
static inline void smc_curs_copy(union smc_host_cursor *tgt,
union smc_host_cursor *src,
@@ -123,6 +116,21 @@
static inline void smc_curs_copy_net(union smc_cdc_cursor *tgt,
union smc_cdc_cursor *src,
struct smc_connection *conn)
+{
+#ifndef KERNEL_HAS_ATOMIC64
+ unsigned long flags;
+
+ spin_lock_irqsave(&conn->acurs_lock, flags);
+ tgt->acurs = src->acurs;
+ spin_unlock_irqrestore(&conn->acurs_lock, flags);
+#else
+ atomic64_set(&tgt->acurs, atomic64_read(&src->acurs));
+#endif
+}
+
+static inline void smcd_curs_copy(union smcd_cdc_cursor *tgt,
+ union smcd_cdc_cursor *src,
+ struct smc_connection *conn)
{
#ifndef KERNEL_HAS_ATOMIC64
unsigned long flags;
@@ -245,14 +253,20 @@
}
static inline void smcd_cdc_msg_to_host(struct smc_host_cdc_msg *local,
- struct smcd_cdc_msg *peer)
+ struct smcd_cdc_msg *peer,
+ struct smc_connection *conn)
{
- local->prod.wrap = peer->prod_wrap;
- local->prod.count = peer->prod_count;
- local->cons.wrap = peer->cons_wrap;
- local->cons.count = peer->cons_count;
- local->prod_flags = peer->prod_flags;
- local->conn_state_flags = peer->conn_state_flags;
+ union smc_host_cursor temp;
+
+ temp.wrap = peer->prod.wrap;
+ temp.count = peer->prod.count;
+ smc_curs_copy(&local->prod, &temp, conn);
+
+ temp.wrap = peer->cons.wrap;
+ temp.count = peer->cons.count;
+ smc_curs_copy(&local->cons, &temp, conn);
+ local->prod_flags = peer->cons.prod_flags;
+ local->conn_state_flags = peer->cons.conn_state_flags;
}
static inline void smc_cdc_msg_to_host(struct smc_host_cdc_msg *local,
@@ -260,21 +274,31 @@
struct smc_connection *conn)
{
if (conn->lgr->is_smcd)
- smcd_cdc_msg_to_host(local, (struct smcd_cdc_msg *)peer);
+ smcd_cdc_msg_to_host(local, (struct smcd_cdc_msg *)peer, conn);
else
smcr_cdc_msg_to_host(local, peer, conn);
}
-struct smc_cdc_tx_pend;
+struct smc_cdc_tx_pend {
+ struct smc_connection *conn; /* socket connection */
+ union smc_host_cursor cursor; /* tx sndbuf cursor sent */
+ union smc_host_cursor p_cursor; /* rx RMBE cursor produced */
+ u16 ctrl_seq; /* conn. tx sequence # */
+};
int smc_cdc_get_free_slot(struct smc_connection *conn,
+ struct smc_link *link,
struct smc_wr_buf **wr_buf,
+ struct smc_rdma_wr **wr_rdma_buf,
struct smc_cdc_tx_pend **pend);
-void smc_cdc_tx_dismiss_slots(struct smc_connection *conn);
+void smc_cdc_wait_pend_tx_wr(struct smc_connection *conn);
int smc_cdc_msg_send(struct smc_connection *conn, struct smc_wr_buf *wr_buf,
struct smc_cdc_tx_pend *pend);
int smc_cdc_get_slot_and_msg_send(struct smc_connection *conn);
int smcd_cdc_msg_send(struct smc_connection *conn);
+int smcr_cdc_msg_send_validation(struct smc_connection *conn,
+ struct smc_cdc_tx_pend *pend,
+ struct smc_wr_buf *wr_buf);
int smc_cdc_init(void) __init;
void smcd_cdc_rx_init(struct smc_connection *conn);
--
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