diff options
| author |   Yishai Hadas <yishaih@mellanox.com> | 2017-06-08 16:15:07 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-07-24 10:40:46 -0400 |
| commit | 2dee0e545894c23b1a2cc2019ac87dffb42e5984 (patch) | |
| tree | 32135e8360768f5a8d4b9e51b25e1a6af1ca23a1 /drivers/infiniband/core/uverbs_cmd.c | |
| parent | IB/core: Enable QP creation with a given source QP number (diff) | |
| download | linux-dev-2dee0e545894c23b1a2cc2019ac87dffb42e5984.tar.xz linux-dev-2dee0e545894c23b1a2cc2019ac87dffb42e5984.zip | |
IB/uverbs: Enable QP creation with a given source QP number
Enable QP creation with a given source QP number, the created QP will
use the source QPN as its wire QP number.
To create such a QP, root privileges (i.e. CAP_NET_RAW) are required
from the user application.
This comes as a pre-patch for downstream patches in this series to
allow user space applications to accelerate traffic which is typically
handled by IPoIB ULP.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_cmd.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 2c98533a0203..60535c754db3 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1383,8 +1383,9 @@ static int create_qp(struct ib_uverbs_file *file, attr.rwq_ind_tbl = ind_tbl; } - if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) + - sizeof(cmd->reserved1)) && cmd->reserved1) { + if (cmd_sz > sizeof(*cmd) && + !ib_is_udata_cleared(ucore, sizeof(*cmd), + cmd_sz - sizeof(*cmd))) { ret = -EOPNOTSUPP; goto err_put; } @@ -1482,11 +1483,21 @@ static int create_qp(struct ib_uverbs_file *file, IB_QP_CREATE_MANAGED_SEND | IB_QP_CREATE_MANAGED_RECV | IB_QP_CREATE_SCATTER_FCS | - IB_QP_CREATE_CVLAN_STRIPPING)) { + IB_QP_CREATE_CVLAN_STRIPPING | + IB_QP_CREATE_SOURCE_QPN)) { ret = -EINVAL; goto err_put; } + if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) { + if (!capable(CAP_NET_RAW)) { + ret = -EPERM; + goto err_put; + } + + attr.source_qpn = cmd->source_qpn; + } + buf = (void *)cmd + sizeof(*cmd); if (cmd_sz > sizeof(*cmd)) if (!(buf[0] == 0 && !memcmp(buf, buf + 1, |