diff options
| author |   Roland Dreier <roland@purestorage.com> | 2012-07-05 14:16:54 -0700 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-07-08 18:02:33 -0700 |
| commit | f747c34af4f56cc239e04505bd583dd3bdcfe49d (patch) | |
| tree | e72c1c67ecc48103f02b2fb542dc2033ada0566a /drivers/infiniband/hw/cxgb4/cm.c | |
| parent | Linux 3.5-rc5 (diff) | |
| download | linux-dev-f747c34af4f56cc239e04505bd583dd3bdcfe49d.tar.xz linux-dev-f747c34af4f56cc239e04505bd583dd3bdcfe49d.zip | |
RDMA/cxgb4: Fix endianness of addition to mpa->private_data_size
sparse correctly warns that if mpa->private_data_size is __be16, then
doing += on it is wrong, even if we do += htons(<something>) -- on a
little endian system, carries will go the wrong way. Fix this up by
doing the addition in native byte order.
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cm.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cm.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index b18870c455ad..51f42061dae9 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -548,8 +548,8 @@ static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, } if (mpa_rev_to_use == 2) { - mpa->private_data_size += - htons(sizeof(struct mpa_v2_conn_params)); + mpa->private_data_size = htons(ntohs(mpa->private_data_size) + + sizeof (struct mpa_v2_conn_params)); mpa_v2_params.ird = htons((u16)ep->ird); mpa_v2_params.ord = htons((u16)ep->ord); @@ -635,8 +635,8 @@ static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { mpa->flags |= MPA_ENHANCED_RDMA_CONN; - mpa->private_data_size += - htons(sizeof(struct mpa_v2_conn_params)); + mpa->private_data_size = htons(ntohs(mpa->private_data_size) + + sizeof (struct mpa_v2_conn_params)); mpa_v2_params.ird = htons(((u16)ep->ird) | (peer2peer ? MPA_V2_PEER2PEER_MODEL : 0)); @@ -715,8 +715,8 @@ static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { mpa->flags |= MPA_ENHANCED_RDMA_CONN; - mpa->private_data_size += - htons(sizeof(struct mpa_v2_conn_params)); + mpa->private_data_size = htons(ntohs(mpa->private_data_size) + + sizeof (struct mpa_v2_conn_params)); mpa_v2_params.ird = htons((u16)ep->ird); mpa_v2_params.ord = htons((u16)ep->ord); if (peer2peer && (ep->mpa_attr.p2p_type != |