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author | James Morris <james.l.morris@oracle.com> | 2014-11-19 11:32:12 +0100 |
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committer | James Morris <james.l.morris@oracle.com> | 2014-11-19 11:32:12 +0100 |
commit | b10778a00d40b3d9fdaaf5891e802794781ff71c (patch) | |
tree | 6ba4cbac86eecedc3f30650e7f764ecf00c83898 /Documentation/infiniband/user_mad.txt | |
parent | integrity: do zero padding of the key id (diff) | |
parent | Linux 3.17 (diff) | |
download | linux-b10778a00d40b3d9fdaaf5891e802794781ff71c.tar.xz linux-b10778a00d40b3d9fdaaf5891e802794781ff71c.zip |
Merge commit 'v3.17' into next
Diffstat (limited to 'Documentation/infiniband/user_mad.txt')
-rw-r--r-- | Documentation/infiniband/user_mad.txt | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/infiniband/user_mad.txt b/Documentation/infiniband/user_mad.txt index 8a366959f5cc..7aca13a54a3a 100644 --- a/Documentation/infiniband/user_mad.txt +++ b/Documentation/infiniband/user_mad.txt @@ -26,6 +26,11 @@ Creating MAD agents ioctl. Also, all agents registered through a file descriptor will be unregistered when the descriptor is closed. + 2014 -- a new registration ioctl is now provided which allows additional + fields to be provided during registration. + Users of this registration call are implicitly setting the use of + pkey_index (see below). + Receiving MADs MADs are received using read(). The receive side now supports @@ -104,10 +109,10 @@ P_Key Index Handling The old ib_umad interface did not allow setting the P_Key index for MADs that are sent and did not provide a way for obtaining the P_Key index of received MADs. A new layout for struct ib_user_mad_hdr - with a pkey_index member has been defined; however, to preserve - binary compatibility with older applications, this new layout will - not be used unless the IB_USER_MAD_ENABLE_PKEY ioctl is called - before a file descriptor is used for anything else. + with a pkey_index member has been defined; however, to preserve binary + compatibility with older applications, this new layout will not be used + unless one of IB_USER_MAD_ENABLE_PKEY or IB_USER_MAD_REGISTER_AGENT2 ioctl's + are called before a file descriptor is used for anything else. In September 2008, the IB_USER_MAD_ABI_VERSION will be incremented to 6, the new layout of struct ib_user_mad_hdr will be used by |