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| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sparc/lib/ipcsum.S | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sparc/lib/ipcsum.S')
| -rw-r--r-- | kernel/arch/sparc/lib/ipcsum.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/kernel/arch/sparc/lib/ipcsum.S b/kernel/arch/sparc/lib/ipcsum.S new file mode 100644 index 000000000..4742d5902 --- /dev/null +++ b/kernel/arch/sparc/lib/ipcsum.S @@ -0,0 +1,33 @@ +#include <linux/linkage.h> + + .text +ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */ + sub %o1, 4, %g7 + lduw [%o0 + 0x00], %o2 + lduw [%o0 + 0x04], %g2 + lduw [%o0 + 0x08], %g3 + addcc %g2, %o2, %o2 + lduw [%o0 + 0x0c], %g2 + addccc %g3, %o2, %o2 + lduw [%o0 + 0x10], %g3 + + addccc %g2, %o2, %o2 + addc %o2, %g0, %o2 +1: addcc %g3, %o2, %o2 + add %o0, 4, %o0 + addccc %o2, %g0, %o2 + subcc %g7, 1, %g7 + be,a,pt %icc, 2f + sll %o2, 16, %g2 + + lduw [%o0 + 0x10], %g3 + ba,pt %xcc, 1b + nop +2: addcc %o2, %g2, %g2 + srl %g2, 16, %o2 + addc %o2, %g0, %o2 + xnor %g0, %o2, %o2 + set 0xffff, %o1 + retl + and %o2, %o1, %o0 +ENDPROC(ip_fast_csum) |