dpaa/qman: Fix various pool allocation bugs
* Set qman_channel_base after determining if QMan is v3, otherwise this
global stays at 0x21, which messes up the shift in
qman_portal_static_dequeue_channel().
* Fix the base shift in qman_portal_static_dequeue_channel(), there are
only 15 channels available, not 16, so starting at a shift of 15
yields shifting into the portal-specific channel.
* Correct vmem pool names for QMan resource pools.
dpaa/eth: fast-path single-page TX frame build
The TX SG-build loop in dpaa_eth_if_start_locked() walked page
boundaries with PAGE_MASK arithmetic even for buffers that lived
entirely within one page -- the common case, since MCLBYTES
is smaller than PAGE_SIZE. Add a fast path that emits a single SGT
entry for wholly-in-one-page segments and skips the inner while
entirely.
Fix the following bugs while we're here:
1. "if (m->m_len == 0) continue;" in the outer loop never
advanced m -- any zero-length mbuf hung the TX path in an
infinite loop. Fix this by switching to a for loop, with the
advancement in the post-clause.
2. In the inner (page-splitting) loop, the cap
"if (m->m_len < ssize) ssize = m->m_len;" compared against
the mbuf's original length, not the remaining bytes. A single mbuf
[11 lines not shown]
