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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-15 15:04:25 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-15 15:04:25 -0700 |
commit | 9a76aba02a37718242d7cdc294f0a3901928aa57 (patch) | |
tree | 2040d038f85d2120f21af83b0793efd5af1864e3 /net/smc/smc_cdc.h | |
parent | x86: i8259: Add missing include file (diff) | |
parent | bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT" (diff) | |
download | linux-dev-9a76aba02a37718242d7cdc294f0a3901928aa57.tar.xz linux-dev-9a76aba02a37718242d7cdc294f0a3901928aa57.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights:
- Gustavo A. R. Silva keeps working on the implicit switch fallthru
changes.
- Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
Luca Coelho.
- Re-enable ASPM in r8169, from Kai-Heng Feng.
- Add virtual XFRM interfaces, which avoids all of the limitations of
existing IPSEC tunnels. From Steffen Klassert.
- Convert GRO over to use a hash table, so that when we have many
flows active we don't traverse a long list during accumluation.
- Many new self tests for routing, TC, tunnels, etc. Too many
contributors to mention them all, but I'm really happy to keep
seeing this stuff.
- Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.
- Lots of cleanups and fixes in L2TP code from Guillaume Nault.
- Add IPSEC offload support to netdevsim, from Shannon Nelson.
- Add support for slotting with non-uniform distribution to netem
packet scheduler, from Yousuk Seung.
- Add UDP GSO support to mlx5e, from Boris Pismenny.
- Support offloading of Team LAG in NFP, from John Hurley.
- Allow to configure TX queue selection based upon RX queue, from
Amritha Nambiar.
- Support ethtool ring size configuration in aquantia, from Anton
Mikaev.
- Support DSCP and flowlabel per-transport in SCTP, from Xin Long.
- Support list based batching and stack traversal of SKBs, this is
very exciting work. From Edward Cree.
- Busyloop optimizations in vhost_net, from Toshiaki Makita.
- Introduce the ETF qdisc, which allows time based transmissions. IGB
can offload this in hardware. From Vinicius Costa Gomes.
- Add parameter support to devlink, from Moshe Shemesh.
- Several multiplication and division optimizations for BPF JIT in
nfp driver, from Jiong Wang.
- Lots of prepatory work to make more of the packet scheduler layer
lockless, when possible, from Vlad Buslov.
- Add ACK filter and NAT awareness to sch_cake packet scheduler, from
Toke Høiland-Jørgensen.
- Support regions and region snapshots in devlink, from Alex Vesker.
- Allow to attach XDP programs to both HW and SW at the same time on
a given device, with initial support in nfp. From Jakub Kicinski.
- Add TLS RX offload and support in mlx5, from Ilya Lesokhin.
- Use PHYLIB in r8169 driver, from Heiner Kallweit.
- All sorts of changes to support Spectrum 2 in mlxsw driver, from
Ido Schimmel.
- PTP support in mv88e6xxx DSA driver, from Andrew Lunn.
- Make TCP_USER_TIMEOUT socket option more accurate, from Jon
Maxwell.
- Support for templates in packet scheduler classifier, from Jiri
Pirko.
- IPV6 support in RDS, from Ka-Cheong Poon.
- Native tproxy support in nf_tables, from Máté Eckl.
- Maintain IP fragment queue in an rbtree, but optimize properly for
in-order frags. From Peter Oskolkov.
- Improvde handling of ACKs on hole repairs, from Yuchung Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
hv/netvsc: Fix NULL dereference at single queue mode fallback
net: filter: mark expected switch fall-through
xen-netfront: fix warn message as irq device name has '/'
cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
net: dsa: mv88e6xxx: missing unlock on error path
rds: fix building with IPV6=m
inet/connection_sock: prefer _THIS_IP_ to current_text_addr
net: dsa: mv88e6xxx: bitwise vs logical bug
net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
ieee802154: hwsim: using right kind of iteration
net: hns3: Add vlan filter setting by ethtool command -K
net: hns3: Set tx ring' tc info when netdev is up
net: hns3: Remove tx ring BD len register in hns3_enet
net: hns3: Fix desc num set to default when setting channel
net: hns3: Fix for phy link issue when using marvell phy driver
net: hns3: Fix for information of phydev lost problem when down/up
net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
net: hns3: Add support for serdes loopback selftest
bnxt_en: take coredump_record structure off stack
...
Diffstat (limited to 'net/smc/smc_cdc.h')
-rw-r--r-- | net/smc/smc_cdc.h | 86 |
1 files changed, 55 insertions, 31 deletions
diff --git a/net/smc/smc_cdc.h b/net/smc/smc_cdc.h index f60082fee5b8..934df4473a7c 100644 --- a/net/smc/smc_cdc.h +++ b/net/smc/smc_cdc.h @@ -50,6 +50,20 @@ struct smc_cdc_msg { u8 reserved[18]; } __packed; /* format defined in RFC7609 */ +/* 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; + u8 res3[8]; +} __packed; + static inline bool smc_cdc_rxed_any_close(struct smc_connection *conn) { return conn->local_rx_ctrl.conn_state_flags.peer_conn_abort || @@ -90,47 +104,34 @@ static inline u64 smc_curs_read(union smc_host_cursor *curs, #endif } -static inline u64 smc_curs_read_net(union smc_cdc_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 -} - -static inline void smc_curs_write(union smc_host_cursor *curs, u64 val, - struct smc_connection *conn) +/* Copy cursor src into tgt */ +static inline void smc_curs_copy(union smc_host_cursor *tgt, + union smc_host_cursor *src, + struct smc_connection *conn) { #ifndef KERNEL_HAS_ATOMIC64 unsigned long flags; spin_lock_irqsave(&conn->acurs_lock, flags); - curs->acurs = val; + tgt->acurs = src->acurs; spin_unlock_irqrestore(&conn->acurs_lock, flags); #else - atomic64_set(&curs->acurs, val); + atomic64_set(&tgt->acurs, atomic64_read(&src->acurs)); #endif } -static inline void smc_curs_write_net(union smc_cdc_cursor *curs, u64 val, - struct smc_connection *conn) +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); - curs->acurs = val; + tgt->acurs = src->acurs; spin_unlock_irqrestore(&conn->acurs_lock, flags); #else - atomic64_set(&curs->acurs, val); + atomic64_set(&tgt->acurs, atomic64_read(&src->acurs)); #endif } @@ -165,7 +166,7 @@ static inline void smc_host_cursor_to_cdc(union smc_cdc_cursor *peer, { union smc_host_cursor temp; - smc_curs_write(&temp, smc_curs_read(local, conn), conn); + smc_curs_copy(&temp, local, conn); peer->count = htonl(temp.count); peer->wrap = htons(temp.wrap); /* peer->reserved = htons(0); must be ensured by caller */ @@ -192,8 +193,8 @@ static inline void smc_cdc_cursor_to_host(union smc_host_cursor *local, union smc_host_cursor temp, old; union smc_cdc_cursor net; - smc_curs_write(&old, smc_curs_read(local, conn), conn); - smc_curs_write_net(&net, smc_curs_read_net(peer, conn), conn); + smc_curs_copy(&old, local, conn); + smc_curs_copy_net(&net, peer, conn); temp.count = ntohl(net.count); temp.wrap = ntohs(net.wrap); if ((old.wrap > temp.wrap) && temp.wrap) @@ -201,12 +202,12 @@ static inline void smc_cdc_cursor_to_host(union smc_host_cursor *local, if ((old.wrap == temp.wrap) && (old.count > temp.count)) return; - smc_curs_write(local, smc_curs_read(&temp, conn), conn); + smc_curs_copy(local, &temp, conn); } -static inline void smc_cdc_msg_to_host(struct smc_host_cdc_msg *local, - struct smc_cdc_msg *peer, - struct smc_connection *conn) +static inline void smcr_cdc_msg_to_host(struct smc_host_cdc_msg *local, + struct smc_cdc_msg *peer, + struct smc_connection *conn) { local->common.type = peer->common.type; local->len = peer->len; @@ -218,6 +219,27 @@ static inline void smc_cdc_msg_to_host(struct smc_host_cdc_msg *local, local->conn_state_flags = peer->conn_state_flags; } +static inline void smcd_cdc_msg_to_host(struct smc_host_cdc_msg *local, + struct smcd_cdc_msg *peer) +{ + 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; +} + +static inline void smc_cdc_msg_to_host(struct smc_host_cdc_msg *local, + struct smc_cdc_msg *peer, + struct smc_connection *conn) +{ + if (conn->lgr->is_smcd) + smcd_cdc_msg_to_host(local, (struct smcd_cdc_msg *)peer); + else + smcr_cdc_msg_to_host(local, peer, conn); +} + struct smc_cdc_tx_pend; int smc_cdc_get_free_slot(struct smc_connection *conn, @@ -227,6 +249,8 @@ void smc_cdc_tx_dismiss_slots(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 smc_cdc_init(void) __init; +void smcd_cdc_rx_init(struct smc_connection *conn); #endif /* SMC_CDC_H */ |