diff options
| author | Dave Olson <dave.olson@qlogic.com> | 2008-01-06 21:02:34 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-01-25 14:15:38 -0800 |
| commit | 9e2ef36b5a83b3c8ec1153382559dff410cc4341 (patch) | |
| tree | f075e20c043c46afbab0320b5a92bac24592bd58 /drivers/infiniband/hw/ipath/ipath_verbs.c | |
| parent | 3029fcc3d44530601f19fd8f551ac195d3a918d7 (diff) | |
| download | lwn-9e2ef36b5a83b3c8ec1153382559dff410cc4341.tar.gz lwn-9e2ef36b5a83b3c8ec1153382559dff410cc4341.zip | |
IB/ipath: Clean up some comments
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index a2baa618daf2..904ff1571ba6 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -943,7 +943,7 @@ bail: * ipath_verbs_send - send a packet * @qp: the QP to send on * @hdr: the packet header - * @hdrwords: the number of words in the header + * @hdrwords: the number of 32-bit words in the header * @ss: the SGE to send * @len: the length of the packet in bytes */ @@ -955,7 +955,10 @@ int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr, int ret; u32 dwords = (len + 3) >> 2; - /* +1 is for the qword padding of pbc */ + /* + * Calculate the send buffer trigger address. + * The +1 counts for the pbc control dword following the pbc length. + */ plen = hdrwords + dwords + 1; /* Drop non-VL15 packets if we are not in the active state */ |