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IPoIB: Handle 4K IB MTU for UD (datagram) mode
authorShirley Ma <mashirle@us.ibm.com>
Wed, 23 Apr 2008 18:55:45 +0000 (11:55 -0700)
committerRoland Dreier <rolandd@cisco.com>
Wed, 23 Apr 2008 18:55:45 +0000 (11:55 -0700)
commitbc7b3a36ba02e4053ca38653e6a753082d9add03
tree28fe1daa7cab6c7cab71bbc7af22ee6ca7746323tree | snapshot
parentbc5698f3ecc9587e1edb343a2878f8d228c49e0ecommit | diff
IPoIB: Handle 4K IB MTU for UD (datagram) mode

This patch enables IPoIB to use 4K UD messages (when the underlying
device and fabrics support a 4K MTU) by using two scatter buffers when
PAGE_SIZE is less than or equal to thhe HCA IB MTU size.  The first
buffer is for IPoIB header + GRH header, and the second buffer is the
IPoIB payload, which is 4K-4.

Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/ulp/ipoib/ipoib.h diff | blob | blame | history
drivers/infiniband/ulp/ipoib/ipoib_ib.c diff | blob | blame | history
drivers/infiniband/ulp/ipoib/ipoib_main.c diff | blob | blame | history
drivers/infiniband/ulp/ipoib/ipoib_multicast.c diff | blob | blame | history
drivers/infiniband/ulp/ipoib/ipoib_verbs.c diff | blob | blame | history
drivers/infiniband/ulp/ipoib/ipoib_vlan.c diff | blob | blame | history
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