diff options
| author |   Or Gerlitz <ogerlitz@mellanox.com> | 2012-03-01 12:17:51 +0200 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2012-05-08 11:18:09 -0700 |
| commit | c938a616aadb621b8e26b0ac09ac13d053c7ed1c (patch) | |
| tree | 85144d93d117f9d31a589385d65f36f061648b8f /drivers/infiniband | |
| parent | Linux 3.4-rc6 (diff) | |
| download | linux-dev-c938a616aadb621b8e26b0ac09ac13d053c7ed1c.tar.xz linux-dev-c938a616aadb621b8e26b0ac09ac13d053c7ed1c.zip | |
IB/core: Add raw packet QP type
IB_QPT_RAW_PACKET allows applications to build a complete packet,
including L2 headers, when sending; on the receive side, the HW will
not strip any headers.
This QP type is designed for userspace direct access to Ethernet; for
example by applications that do TCP/IP themselves. Only processes
with the NET_RAW capability are allowed to create raw packet QPs (the
name "raw packet QP" is supposed to suggest an analogy to AF_PACKET /
SOL_RAW sockets).
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 4d27e4c3fe34..7d801e6252f1 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1399,6 +1399,9 @@ ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, if (copy_from_user(&cmd, buf, sizeof cmd)) return -EFAULT; + if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) + return -EPERM; + INIT_UDATA(&udata, buf + sizeof cmd, (unsigned long) cmd.response + sizeof resp, in_len - sizeof cmd, out_len - sizeof resp); diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index 575b78045aaf..140f9a5d492f 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -479,6 +479,7 @@ static const struct { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY), + [IB_QPT_RAW_PACKET] = IB_QP_PORT, [IB_QPT_UC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), |