1SKB_CHECKSUM_TRIMMED(9)        Linux Networking        SKB_CHECKSUM_TRIMMED(9)
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NAME

6       skb_checksum_trimmed - validate checksum of an skb
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SYNOPSIS

9       struct sk_buff * skb_checksum_trimmed(struct sk_buff * skb,
10                                             unsigned int transport_len,
11                                             __sum16(*skb_chkf) (struct sk_buff *skb));
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ARGUMENTS

14       skb
15           the skb to check
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17       transport_len
18           the data length beyond the network header
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20       skb_chkf
21           checksum function to use
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DESCRIPTION

24       Applies the given checksum function skb_chkf to the provided skb.
25       Returns a checked and maybe trimmed skb. Returns NULL on error.
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27       If the skb has data beyond the given transport length, then a trimmed &
28       cloned skb is checked and returned.
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30       Caller needs to set the skb transport header and free any returned skb
31       if it differs from the provided skb.
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34Kernel Hackers Manual 3.10         June 2019           SKB_CHECKSUM_TRIMMED(9)
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