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s390/bpf: Fix skb_copy_bits() parameter passing
The skb_copy_bits() function has the following signature: int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len) Currently in bpf_jit.S the "to" and "len" parameters have been exchanged. So fix this and call the function with the correct parameters. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -22,8 +22,8 @@
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* skb_copy_bits takes 4 parameters:
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* %r2 = skb pointer
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* %r3 = offset into skb data
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* %r4 = length to copy
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* %r5 = pointer to temp buffer
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* %r4 = pointer to temp buffer
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* %r5 = length to copy
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*/
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#define SKBDATA %r8
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@ -44,8 +44,8 @@ ENTRY(sk_load_word)
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sk_load_word_slow:
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lgr %r9,%r2 # save %r2
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lhi %r4,4 # 4 bytes
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la %r5,160(%r15) # pointer to temp buffer
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la %r4,160(%r15) # pointer to temp buffer
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lhi %r5,4 # 4 bytes
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brasl %r14,skb_copy_bits # get data from skb
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l %r5,160(%r15) # load result from temp buffer
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ltgr %r2,%r2 # set cc to (%r2 != 0)
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@ -69,8 +69,8 @@ ENTRY(sk_load_half)
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sk_load_half_slow:
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lgr %r9,%r2 # save %r2
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lhi %r4,2 # 2 bytes
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la %r5,162(%r15) # pointer to temp buffer
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la %r4,162(%r15) # pointer to temp buffer
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lhi %r5,2 # 2 bytes
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brasl %r14,skb_copy_bits # get data from skb
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xc 160(2,%r15),160(%r15)
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l %r5,160(%r15) # load result from temp buffer
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@ -95,8 +95,8 @@ ENTRY(sk_load_byte)
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sk_load_byte_slow:
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lgr %r9,%r2 # save %r2
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lhi %r4,1 # 1 bytes
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la %r5,163(%r15) # pointer to temp buffer
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la %r4,163(%r15) # pointer to temp buffer
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lhi %r5,1 # 1 bytes
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brasl %r14,skb_copy_bits # get data from skb
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xc 160(3,%r15),160(%r15)
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l %r5,160(%r15) # load result from temp buffer
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@ -118,8 +118,8 @@ ENTRY(sk_load_byte_msh)
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sk_load_byte_msh_slow:
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lgr %r9,%r2 # save %r2
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lhi %r4,2 # 2 bytes
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la %r5,162(%r15) # pointer to temp buffer
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la %r4,162(%r15) # pointer to temp buffer
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lhi %r5,2 # 2 bytes
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brasl %r14,skb_copy_bits # get data from skb
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xc 160(3,%r15),160(%r15)
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l %r12,160(%r15) # load result from temp buffer
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