Sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so ` (3 subsequent siblings) 4 siblings, 0 replies 52+ messages in thread 16:52 ` net: split skb_checksum_help Davide Caratti 16:52 net: improve support for SCTP checksums Davide 16:52 ` Davide Caratti * skbuff: add stub to help computing crc32c on SCTP packets Net: more accurate checksumming in validate_xmit_skbĭocumentation: add description of skb_sctp_csum_helpĭocumentation/networking/checksum-offloads.txt | 9 +. Skbuff: add stub to help computing crc32c on SCTP packets Protocol number and netdev features bitmask skb_csum_hwoffload_help, called by validate xmit skb to perform SWĬhecksumming using the correct algorithm based on the value of IP Skb_checksum_help, that performs SW checksumming for skbs using crc32c
skb_sctp_csum_help, a function sharing common code with the original the possibility to compute crc32c on skbs in Linux net core This series tries to address the above issue, by providing: packet being transmitted with 2-complement checksum instead of crc32c packet being transmitted with identically-zero checksum Results in wrong handling of SCTP, leading to:
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Then most NIC drivers can only call skb_checksum_help if their HW can't Set on netdev features, validate_xmit_skb skips checksum computation - but Finally, even when at least one bit in NETIF_F_CSUM_MASK is Of NETIF_F_SCTP_CRC, so any chance to offload crc32c computation on the Moreover, this is done regardless the value This results in a systematic corruption of SCTP packets, since they need Skbs having ip_summed equal to CHECKSUM_PARTIAL. Uses skb_checksum_help to compute 16-bit, 2-complement checksum on non-GSO When NETIF_F_CSUM_MASK bits are all 0 on netdev features, validate_xmit_skb Miller +Cc: netdev, linux-sctp, Marcelo Ricardo Leitner ` (4 more replies) 0 siblings, 5 replies 52+ messages in threadįrom: Davide Caratti 16:52 UTC ( / raw) 16:52 ` skbuff: add stub to help computing crc32c on SCTP packets Davide Caratti
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Net: improve support for SCTP checksums Netdev Archive on help / color / mirror / Atom feed * net: improve support for SCTP checksums 16:52 Davide Caratti
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