• Jesper Dangaard Brouer's avatar
    ipvs: API change to avoid rescan of IPv6 exthdr · d4383f04
    Jesper Dangaard Brouer authored
    
    
    Reduce the number of times we scan/skip the IPv6 exthdrs.
    
    This patch contains a lot of API changes.  This is done, to avoid
    repeating the scan of finding the IPv6 headers, via ipv6_find_hdr(),
    which is called by ip_vs_fill_iph_skb().
    
    Finding the IPv6 headers is done as early as possible, and passed on
    as a pointer "struct ip_vs_iphdr *" to the affected functions.
    
    This patch reduce/removes 19 calls to ip_vs_fill_iph_skb().
    
    Notice, I have choosen, not to change the API of function
    pointer "(*schedule)" (in struct ip_vs_scheduler) as it can be
    used by external schedulers, via {un,}register_ip_vs_scheduler.
    Only 4 out of 10 schedulers use info from ip_vs_iphdr*, and when
    they do, they are only interested in iph->{s,d}addr.
    Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
    Acked-by: default avatarJulian Anastasov <ja@ssi.bg>
    Signed-off-by: default avatarSimon Horman <horms@verge.net.au>
    d4383f04