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RDMA/ucma: Allow user space to pass AF_IB into resolve

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Allow user space applications to call resolve_addr using AF_IB.  To
support sockaddr_ib, we need to define a new structure capable of
handling the larger address size.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sean Hefty 2013-05-29 10:09:32 -07:00 committed by Roland Dreier
parent eebe4c3a62
commit 209cf2a751
2 changed files with 41 additions and 2 deletions
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30
drivers/infiniband/core/ucma.c
View File

@ -577,6 +577,33 @@ static ssize_t ucma_resolve_ip(struct ucma_file *file,
return ret;
}
static ssize_t ucma_resolve_addr(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len)
{
struct rdma_ucm_resolve_addr cmd;
struct sockaddr *src, *dst;
struct ucma_context *ctx;
int ret;
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
return -EFAULT;
src = (struct sockaddr *) &cmd.src_addr;
dst = (struct sockaddr *) &cmd.dst_addr;
if (cmd.reserved || (cmd.src_size && (cmd.src_size != rdma_addr_size(src))) ||
!cmd.dst_size || (cmd.dst_size != rdma_addr_size(dst)))
return -EINVAL;
ctx = ucma_get_ctx(file, cmd.id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
ret = rdma_resolve_addr(ctx->cm_id, src, dst, cmd.timeout_ms);
ucma_put_ctx(ctx);
return ret;
}
static ssize_t ucma_resolve_route(struct ucma_file *file,
const char __user *inbuf,
int in_len, int out_len)
@ -1423,7 +1450,8 @@ static ssize_t (*ucma_cmd_table[])(struct ucma_file *file,
[RDMA_USER_CM_CMD_LEAVE_MCAST] = ucma_leave_multicast,
[RDMA_USER_CM_CMD_MIGRATE_ID] = ucma_migrate_id,
[RDMA_USER_CM_CMD_QUERY] = ucma_query,
[RDMA_USER_CM_CMD_BIND] = ucma_bind
[RDMA_USER_CM_CMD_BIND] = ucma_bind,
[RDMA_USER_CM_CMD_RESOLVE_ADDR] = ucma_resolve_addr
};
static ssize_t ucma_write(struct file *filp, const char __user *buf,

13
include/uapi/rdma/rdma_user_cm.h
View File

@ -63,7 +63,8 @@ enum {
RDMA_USER_CM_CMD_LEAVE_MCAST,
RDMA_USER_CM_CMD_MIGRATE_ID,
RDMA_USER_CM_CMD_QUERY,
RDMA_USER_CM_CMD_BIND
RDMA_USER_CM_CMD_BIND,
RDMA_USER_CM_CMD_RESOLVE_ADDR
};
/*
@ -117,6 +118,16 @@ struct rdma_ucm_resolve_ip {
__u32 timeout_ms;
};
struct rdma_ucm_resolve_addr {
__u32 id;
__u32 timeout_ms;
__u16 src_size;
__u16 dst_size;
__u32 reserved;
struct sockaddr_storage src_addr;
struct sockaddr_storage dst_addr;
};
struct rdma_ucm_resolve_route {
__u32 id;
__u32 timeout_ms;