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rds: add type of service(tos) infrastructure

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RDS Service type (TOS) is user-defined and needs to be configured
via RDS IOCTL interface. It must be set before initiating any
traffic and once set the TOS can not be changed. All out-going
traffic from the socket will be associated with its TOS.

Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
[yanjun.zhu@oracle.com: Adapted original patch with ipv6 changes]
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
This commit is contained in:
Santosh Shilimkar
2018-10-23 23:21:14 -04:00
parent d021fabf52
commit 3eb450367d
11 changed files with 72 additions and 17 deletions
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11
include/uapi/linux/rds.h
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@@ -69,6 +69,12 @@
#define RDS_TRANS_COUNT 3
#define RDS_TRANS_NONE (~0)
/* IOCTLS commands for SOL_RDS */
#define SIOCRDSSETTOS (SIOCPROTOPRIVATE)
#define SIOCRDSGETTOS (SIOCPROTOPRIVATE + 1)
typedef __u8 rds_tos_t;
/*
* Control message types for SOL_RDS.
*
@@ -149,6 +155,7 @@ struct rds_info_connection {
__be32 faddr;
__u8 transport[TRANSNAMSIZ]; /* null term ascii */
__u8 flags;
__u8 tos;
} __attribute__((packed));
struct rds6_info_connection {
@@ -171,6 +178,7 @@ struct rds_info_message {
__be16 lport;
__be16 fport;
__u8 flags;
__u8 tos;
} __attribute__((packed));
struct rds6_info_message {
@@ -214,6 +222,7 @@ struct rds_info_tcp_socket {
__u32 last_sent_nxt;
__u32 last_expected_una;
__u32 last_seen_una;
__u8 tos;
} __attribute__((packed));
struct rds6_info_tcp_socket {
@@ -240,6 +249,7 @@ struct rds_info_rdma_connection {
__u32 max_send_sge;
__u32 rdma_mr_max;
__u32 rdma_mr_size;
__u8 tos;
};
struct rds6_info_rdma_connection {
@@ -253,6 +263,7 @@ struct rds6_info_rdma_connection {
__u32 max_send_sge;
__u32 rdma_mr_max;
__u32 rdma_mr_size;
__u8 tos;
};
/* RDS message Receive Path Latency points */