diff options
Diffstat (limited to 'net/smc/smc_llc.h')
| -rw-r--r-- | net/smc/smc_llc.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/net/smc/smc_llc.h b/net/smc/smc_llc.h new file mode 100644 index 000000000000..b472f853953a --- /dev/null +++ b/net/smc/smc_llc.h @@ -0,0 +1,63 @@ +/* + * Shared Memory Communications over RDMA (SMC-R) and RoCE + * + * Definitions for LLC (link layer control) message handling + * + * Copyright IBM Corp. 2016 + * + * Author(s): Klaus Wacker <Klaus.Wacker@de.ibm.com> + * Ursula Braun <ubraun@linux.vnet.ibm.com> + */ + +#ifndef SMC_LLC_H +#define SMC_LLC_H + +#include "smc_wr.h" + +#define SMC_LLC_FLAG_RESP 0x80 + +#define SMC_LLC_WAIT_FIRST_TIME (5 * HZ) + +enum smc_llc_reqresp { + SMC_LLC_REQ, + SMC_LLC_RESP +}; + +enum smc_llc_msg_type { + SMC_LLC_CONFIRM_LINK = 0x01, +}; + +#define SMC_LLC_DATA_LEN 40 + +struct smc_llc_hdr { + struct smc_wr_rx_hdr common; + u8 length; /* 44 */ + u8 reserved; + u8 flags; +}; + +struct smc_llc_msg_confirm_link { /* type 0x01 */ + struct smc_llc_hdr hd; + u8 sender_mac[ETH_ALEN]; + u8 sender_gid[SMC_GID_SIZE]; + u8 sender_qp_num[3]; + u8 link_num; + u8 link_uid[SMC_LGR_ID_SIZE]; + u8 max_links; + u8 reserved[9]; +}; + +union smc_llc_msg { + struct smc_llc_msg_confirm_link confirm_link; + struct { + struct smc_llc_hdr hdr; + u8 data[SMC_LLC_DATA_LEN]; + } raw; +}; + +/* transmit */ +int smc_llc_send_confirm_link(struct smc_link *lnk, u8 mac[], union ib_gid *gid, + enum smc_llc_reqresp reqresp); +int smc_llc_init(void) __init; + +#endif /* SMC_LLC_H */ |