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author | Wolfgang Grandegger <wg@grandegger.com> | 2009-10-20 00:08:01 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-10-20 00:08:01 -0700 |
commit | 7b6856a0296a8f187bb88ba31fa83a08abba7966 (patch) | |
tree | 0afbcc9291eeb368e4e4616b6eed9062df646de0 /drivers/s390 | |
parent | 0eae750e6019a93643063924209c1daf9cb9b4a7 (diff) | |
download | linux-stable-7b6856a0296a8f187bb88ba31fa83a08abba7966.tar.gz linux-stable-7b6856a0296a8f187bb88ba31fa83a08abba7966.tar.bz2 linux-stable-7b6856a0296a8f187bb88ba31fa83a08abba7966.zip |
can: provide library functions for skb allocation
This patch makes the private functions alloc_can_skb() and
alloc_can_err_skb() of the at91_can driver public and adapts all
drivers to use these. While making the patch I realized, that
the skb's are *not* setup consistently. It's now done as shown
below:
skb->protocol = htons(ETH_P_CAN);
skb->pkt_type = PACKET_BROADCAST;
skb->ip_summed = CHECKSUM_UNNECESSARY;
*cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
memset(*cf, 0, sizeof(struct can_frame));
The frame is zeroed out to avoid uninitialized data to be passed to
user space. Some drivers or library code did not set "pkt_type" or
"ip_summed". Also, "__constant_htons()" should not be used for
runtime invocations, as pointed out by David Miller.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
0 files changed, 0 insertions, 0 deletions