If failed to get skb frags using napi_get_frags(),
the packet is dropped.
Reported-by: Eric Dumazet <[email protected]>
Signed-off-by: Yevgeny Petrilin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Convert pr_<level>("%s" ..., (struct netdev *)->name ...)
to netdev_<level>((struct netdev *), ...)
Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This patch standardizes caif message logging prefixes.
Add #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
Add missing "\n"s to some logging messages
Convert pr_warning to pr_warn
This changes the logging message prefix from CAIF: to caif:
for all uses but caif_socket.c and chnl_net.c. Those now use
their filename without extension.
Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
The function has an unsigned return type, but returns a negative constant
to indicate an error condition. The result of calling the function is
always stored in a variable of type (signed) int, and thus unsigned can be
dropped from the return type.
A sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@exists@
identifier f;
constant C;
@@
unsigned f(...)
{ <+...
* return -C;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
The function has an unsigned return type, but returns a negative constant
to indicate an error condition. The result of calling the function is
always stored in a variable of type (signed) int, and thus unsigned can be
dropped from the return type.
A sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@exists@
identifier f;
constant C;
@@
unsigned f(...)
{ <+...
* return -C;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
The CHELSIO_T1_1G ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.
Signed-off-by: Christian Dietrich <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Add #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
Convert jeprintk to pr_err
Remove jeprintk macro define
Remove periods from end of logging messages
Coalesce format strings
Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This showed up in my audit because we use strcpy() to copy "ds" into a
32 character buffer inside the isdn_tty_dial() function. But it turns
out that we only ever use the first 32 characters so it's OK. I have
changed the declaration to make the static checkers happy.
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
cs->ics.parm.setup.phone is a 32 character array. In each of these
cases we're copying from a 35 character array into a 32 character array
so we should use strlcpy() instead of strcpy().
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
In this case, a device_node structure is stored in another structure that
is then freed without first decrementing the reference count of the
device_node structure.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression x;
identifier f;
position p1,p2;
@@
x@p1->f = \(of_find_node_by_path\|of_find_node_by_name\|of_find_node_by_phandle\|of_get_parent\|of_get_next_parent\|of_get_next_child\|of_find_compatible_node\|of_match_node\|of_find_node_by_type\|of_find_node_with_property\|of_find_matching_node\|of_parse_phandle\|of_node_get\)(...);
... when != of_node_put(x)
kfree@p2(x)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
cocci.print_main("call",p1)
cocci.print_secs("free",p2)
// </smpl>
Signed-off-by: Julia Lawall <[email protected]>
Acked-by: Wolfram Sang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
pskb_expand_head() blindly takes references on fragments before calling
skb_release_data(), potentially releasing these references.
We can add a fast path, avoiding these atomic operations, if we own the
last reference on skb->head.
Based on a previous patch from David
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Add an entry to the MAINTAINERS file for ibmveth, clean up the copyright
and add all authors. Change the name of the module to reflect the product name
over the last number of years.
Considering all the changes we have made, bump the driver version.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
These files probably came across from the skeleton driver. Remove them.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
We had a driver specific assert function which wasn't enabled most of the
time. Convert them to BUG_ON and enable them all the time.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
We had a few cases where we returned success on error.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Fix most of the kernel coding style issues in ibmveth.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
IbmVethNumBufferPools -> IBMVETH_NUM_BUFF_POOLS
Also change IBMVETH_MAX_MTU -> IBMVETH_MIN_MTU, it refers to the minimum
size not the maximum.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
These functions appear before their use, so we can remove the redundant
prototypes.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
We were using alloc_skb which doesn't create any headroom. Change it to
use netdev_alloc_skb to match most other drivers.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
We export all the driver specific statistics via ethtool, so there is no need
to duplicate this in procfs.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This patch enables TCP checksum offload support for IPv6 on ibmveth.
This completely eliminates the generation and checking of the checksum
for IPv6 packets that are completely virtual and never touch a physical
network. A basic TCPIPV6_STREAM netperf run showed a ~30% throughput
improvement when an MTU of 64000 was used.
This featured is enabled by default, as is the case for IPv4 checksum
offload. When checksum offload is enabled the driver will negotiate
IPv4 and IPv6 offload with the firmware separately and enable what
is available. As long as either IPv4 or IPv6 offload is supported
and enabled the device will report that checksum offload is enabled.
The device stats, available through ethtool, will display which
checksum offload features are supported/enabled by firmware.
Performance testing against a stock kernel shows no regression for IPv4
or IPv6 in terms of throughput or processor utilization with checksum
disabled or enabled.
Signed-off-by: Robert Jennings <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Remove code in the device probe function where we set up the checksum
offload feature and replace it with a call to an existing function that
is doing the same. This is done to clean up the driver in preparation
of adding IPv6 checksum offload support.
Signed-off-by: Robert Jennings <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
On some machines we can improve the bandwidth by ensuring rx buffers are
not in the cache. Add a module option that is disabled by default that flushes
rx buffers on insertion.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
ibmveth can scatter gather up to 6 segments. If we go over this then
we have no option but to call skb_linearize, like other drivers with
similar limitations do.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
We want to order the read in ibmveth_rxq_pending_buffer and the read of
ibmveth_rxq_buffer_valid which are both cacheable memory. smp_rmb() is good
enough for this.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
For small packets, create a new skb and copy the packet into it so we
avoid tearing down and creating a TCE entry.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Use the existing bounce buffer if we send a buffer under a certain size.
This saves the overhead of a TCE map/unmap.
I can't see any reason for the wmb() in the bounce buffer case, if we need
a barrier it will be before we call h_send_logical_lan but we have
nothing in the common case. Remove it.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
The ibmveth adapter needs locking in the transmit routine to protect
the bounce_buffer but it sets LLTX and forgets to add any of its own
locking.
Just remove the deprecated LLTX option. Remove the stats lock in the process.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
At the moment we try and replenish the receive ring on every rx interrupt.
We even have a pool->threshold but aren't using it.
To limit the maximum latency incurred when refilling, change the threshold
from 1/2 to 7/8 and reduce the largest rx pool from 768 buffers to 512 which
should be more than enough.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Replace some modulus operators with an increment and compare to avoid
an integer divide.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Santiago Leon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Cause TIPC to return EAGAIN if it is unable to enable a new Ethernet
bearer because one or more recently disabled Ethernet bearers are
temporarily consuming resources during shut down. (The previous error
code, EDQUOT, is now returned only if all available Ethernet bearer
data structures are fully enabled at the time the request to enable an
additional bearer is received.)
Signed-off-by: Allan Stephens <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Add code to expand the headroom of an outgoing TIPC message if the
sk_buff has insufficient room to hold the header for the associated
Ethernet device. This change is necessary to ensure that messages
TIPC does not create itself (eg. incoming messages that are being
routed to another node) do not cause problems, since TIPC has no
control over the amount of headroom available in such messages.
Signed-off-by: Allan Stephens <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Optimizes TIPC's name table translation code to avoid unnecessary
manipulation of the node address field of the resulting port id when
name translation fails. This change is possible because a valid port
id cannot have a reference field of zero, so examining the reference
only is sufficient to determine if the translation was successful.
Signed-off-by: Allan Stephens <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Change several wan drivers to make strings and other initialize
only parameters const.
Compile tested only (with no new warnings)
Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
While porting GRO to r8169, I found this driver has a bug in its rx
path.
All skbs given to network stack had their ip_summed set to
CHECKSUM_NONE, while hardware said they had correct TCP/UDP checksums.
The reason is driver sets skb->ip_summed on the original skb before the
copy eventually done by copybreak. The fresh skb gets the ip_summed =
CHECKSUM_NONE value, forcing network stack to recompute checksum, and
preventing my GRO patch to work.
Fix is to make the ip_summed setting after skb copy.
Note : rx_copybreak current value is 16383, so all frames are copied...
Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Francois Romieu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Don't call flush_workqueue() on the cxgb3 Work Queue in cxgb_down() when
we're being called from the fatal error task ... which is executing on the
cxgb3 Work Queue.
Signed-off-by: Casey Leedom <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
__alloc_skb() uses a memset() to clear all the beginning of skb,
including bitfields contained in 'flags1' & 'flags2'.
We dont need any more to use kmemcheck_annotate_bitfield() on these
fields. However, we still need it for the clone part, which is not
cleared.
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
struct tulip_private is a bit large (order-1 allocation even on 32bit
arch), try to shrink it, remove its net_device_stats field.
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Documentation for recent changes to the tunables accept_ra and
forwarding.
Signed-off-by: Thomas Graf <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Similar to accepting router advertisement, the IPv6 stack does not send router
solicitations if forwarding is enabled.
This patch enables this behavior to be overruled by setting forwarding to the
special value 2.
Signed-off-by: Thomas Graf <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
The current IPv6 behavior is to not accept router advertisements while
forwarding, i.e. configured as router.
This does make sense, a router is typically not supposed to be auto
configured. However there are exceptions and we should allow the
current behavior to be overwritten.
Therefore this patch enables the user to overrule the "if forwarding
enabled then don't listen to RAs" rule by setting accept_ra to the
special value of 2.
An alternative would be to ignore the forwarding switch alltogether
and solely accept RAs based on the value of accept_ra. However, I
found that if not intended, accepting RAs as a router can lead to
strange unwanted behavior therefore we it seems wise to only do so
if the user explicitely asks for this behavior.
Signed-off-by: Thomas Graf <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
