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  1. 22 Sep, 2014 33 commits
  3. 20 Sep, 2014 1 commit
    • Andy Zhou's avatar
      udp_tunnel: Only build ip6_udp_tunnel.c when IPV6 is selected · 6d967f87
      Andy Zhou authored 
      Functions supplied in ip6_udp_tunnel.c are only needed when IPV6 is
selected. When IPV6 is not selected, those functions are stubbed out
in udp_tunnel.h.

==================================================================
 net/ipv6/ip6_udp_tunnel.c:15:5: error: redefinition of 'udp_sock_create6'
     int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
 In file included from net/ipv6/ip6_udp_tunnel.c:9:0:
      include/net/udp_tunnel.h:36:19: note: previous definition of 'udp_sock_create6' was here
       static inline int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
==================================================================

Fixes:  fd384412 udp_tunnel: Seperate ipv6 functions into its own file
Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: default avatarAndy Zhou <azhou@nicira.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6d967f87
  5. 19 Sep, 2014 6 commits
    • David S. Miller's avatar
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next · 6c62f606
      David S. Miller authored 
      Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-09-18

This series contains updates to ixgbe and ixgbevf.

Ethan Zhao cleans up ixgbe and ixgbevf by removing bd_number from the
adapter struct because it is not longer useful.

Mark fixes ixgbe where if a hardware transmit timestamp is requested,
an uninitialized workqueue entry may be scheduled.  Added a check for
a PTP clock to avoid that.

Jacob provides a number of cleanups for ixgbe.  Since we may call
ixgbe_acquire_msix_vectors() prior to registering our netdevice, we
should not use the netdevice specific printk and use e_dev_warn()
instead.  Similar to how ixgbevf handles acquiring MSI-X vectors, we
can return an error code instead of relying on the flag being set.
This makes it more clear that we have failed to setup MSI-X mode and
will make it easier to consolidate MSI-X related code into a single
function.  In the case of disabling DCB, it is not an error since we
still can function, we just have to let the user know.  So use
e_dev_warn() instead of e_err().  Added warnings for other features
that are disabled when we are without MSI-X support.  Cleanup flags
that are no longer used or needed.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6c62f606
    • David S. Miller's avatar
      Merge branch 'mlx4-next' · 58310b3f
      David S. Miller authored 
      Or Gerlitz says:

====================
mlx4: CQE/EQE stride support

This series from Ido Shamay is intended for archs having
cache line larger then 64 bytes.

Since our CQE/EQEs are generally 64B in those systems, HW will write
twice to the same cache line consecutively, causing pipe locks due to
he hazard prevention mechanism. For elements in a cyclic buffer, writes
are consecutive, so entries smaller than a cache line should be
avoided, especially if they are written at a high rate.

Reduce consecutive writes to same cache line in CQs/EQs, by allowing the
driver to increase the distance between entries so that each will reside
in a different cache line.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      58310b3f
    • Ido Shamay's avatar
      net/mlx4_en: Add mlx4_en_get_cqe helper · b1b6b4da
      Ido Shamay authored 
      This function derives the base address of the CQE from the CQE size,
and calculates the real CQE context segment in it from the factor
(this is like before). Before this change the code used the factor to
calculate the base address of the CQE as well.

The factor indicates in which segment of the cqe stride the cqe information
is located. For 32-byte strides, the segment is 0, and for 64 byte strides,
the segment is 1 (bytes 32..63). Using the factor was ok as long as we had
only 32 and 64 byte strides. However, with larger strides, the factor is zero,
and so cannot be used to calculate the base of the CQE.

The helper uses the same method of CQE buffer pulling made by all other
components that reads the CQE buffer (mlx4_ib driver and libmlx4).
Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b1b6b4da
    • Ido Shamay's avatar
      net/mlx4_core: Cache line EQE size support · 43c816c6
      Ido Shamay authored 
      Enable mlx4 interrupt handler to work with EQE stride feature,
The feature may be enabled when cache line is bigger than 64B.
The EQE size will then be the cache line size, and the context
segment resides in [0-31] offset.
Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      43c816c6
    • Ido Shamay's avatar
      net/mlx4_core: Enable CQE/EQE stride support · 77507aa2
      Ido Shamay authored 
      This feature is intended for archs having cache line larger then 64B.

Since our CQE/EQEs are generally 64B in those systems, HW will write
twice to the same cache line consecutively, causing pipe locks due to
he hazard prevention mechanism. For elements in a cyclic buffer, writes
are consecutive, so entries smaller than a cache line should be
avoided, especially if they are written at a high rate.

Reduce consecutive writes to same cache line in CQs/EQs, by allowing the
driver to increase the distance between entries so that each will reside
in a different cache line. Until the introduction of this feature, there
were two types of CQE/EQE:

1. 32B stride and context in the [0-31] segment
2. 64B stride and context in the [32-63] segment

This feature introduces two additional types:

3. 128B stride and context in the [0-31] segment (128B cache line)
4. 256B stride and context in the [0-31] segment (256B cache line)

Modify the mlx4_core driver to query the device for the CQE/EQE cache
line stride capability and to enable that capability when the host
cache line size is larger than 64 bytes (supported cache lines are
128B and 256B).

The mlx4 IB driver and libmlx4 need not be aware of this change. The PF
context behaviour is changed to require this change in VF drivers
running on such archs.
Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      77507aa2
    • Sabrina Dubroca's avatar
      net: fix sparse warnings in SNMP_UPD_PO_STATS(_BH) · 54003f11
      Sabrina Dubroca authored 
      ptr used to be a non __percpu pointer (result of a this_cpu_ptr
assignment, 7d720c3e ("percpu: add __percpu sparse annotations to
net")). Since d25398df ("net: avoid reloads in SNMP_UPD_PO_STATS"),
that's no longer the case, SNMP_UPD_PO_STATS uses this_cpu_add and ptr
is now __percpu.

Silence sparse warnings by preserving the original type and
annotation, and remove the out-of-date comment.

warning: incorrect type in initializer (different address spaces)
   expected unsigned long long *ptr
   got unsigned long long [noderef] <asn:3>*<noident>
warning: incorrect type in initializer (different address spaces)
   expected void const [noderef] <asn:3>*__vpp_verify
   got unsigned long long *<noident>
warning: incorrect type in initializer (different address spaces)
   expected void const [noderef] <asn:3>*__vpp_verify
   got unsigned long long *<noident>
Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Acked-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      54003f11
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