d16623dd39
This reverts the patch that enabled mbuf fast free.
There are two main reasons.
First, enic_fast_free_wq_bufs is broken. When
DEV_TX_OFFLOAD_MBUF_FAST_FREE is enabled, the driver calls this
function to free transmitted mbufs. This function currently does not
reset next and nb_segs. This is simply wrong as the fast-free flag
does not imply anything about next and nb_segs.
We could fix enic_fast_free_wq_bufs by making it to call
rte_pktmbuf_prefree_seg to reset the required fields. But, it negates
most of cycle saving.
Second, there are customer applications that blindly enable all Tx
offloads supported by the device. Some of these applications do not
satisfy the requirements of mbuf fast free (i.e. a single pool per
queue and refcnt = 1), and end up crashing or behaving badly.
Fixes: bcaa54c1a1 ("net/enic: support mbuf fast free offload")
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
41 lines
994 B
INI
41 lines
994 B
INI
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; Supported features of the 'enic' network poll mode driver.
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; Refer to default.ini for the full list of available PMD features.
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[Features]
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Link status = Y
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Link status event = Y
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Rx interrupt = Y
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Queue start/stop = Y
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MTU update = Y
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Jumbo frame = Y
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Scattered Rx = Y
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TSO = Y
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Promiscuous mode = Y
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Allmulticast mode = Y
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Unicast MAC filter = Y
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Multicast MAC filter =
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RSS hash = Y
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RSS key update = Y
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RSS reta update = Y
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Inner RSS = Y
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SR-IOV = Y
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CRC offload = Y
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VLAN offload = Y
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Flow director = Y
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Flow API = Y
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L3 checksum offload = Y
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L4 checksum offload = Y
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Inner L3 checksum = Y
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Inner L4 checksum = Y
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Packet type parsing = Y
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Basic stats = Y
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Multiprocess aware = Y
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BSD nic_uio = Y
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Linux UIO = Y
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Linux VFIO = Y
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x86-32 = Y
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x86-64 = Y
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Usage doc = Y
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