Re: [Qemu-devel] [PATCH] COLO-compare: Improve tcp compare trace event readability

[Jason Wang <jasowang@redhat.com>]

On 2017年04月27日 11:46, Zhang Chen wrote:
> Because of previous patch's trace arguments over the limit
> of UST backend, so I rewrite the patch.
>
> Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
> ---
>   net/colo-compare.c | 33 ++++++++++++++++++++++-----------
>   net/trace-events   |  3 +--
>   2 files changed, 23 insertions(+), 13 deletions(-)
>
> diff --git a/net/colo-compare.c b/net/colo-compare.c
> index 4ab80b1..2639c7f 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -265,17 +265,28 @@ static int colo_packet_compare_tcp(Packet *spkt, Packet *ppkt)
>       }
>   
>       if (res != 0 && trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
> -        trace_colo_compare_pkt_info_src(inet_ntoa(ppkt->ip->ip_src),
> -                                        ntohl(stcp->th_seq),
> -                                        ntohl(stcp->th_ack),
> -                                        res, stcp->th_flags,
> -                                        spkt->size);
> -
> -        trace_colo_compare_pkt_info_dst(inet_ntoa(ppkt->ip->ip_dst),
> -                                        ntohl(ptcp->th_seq),
> -                                        ntohl(ptcp->th_ack),
> -                                        res, ptcp->th_flags,
> -                                        ppkt->size);
> +        char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20];
> +
> +        strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src));
> +        strcpy(pri_ip_dst, inet_ntoa(ppkt->ip->ip_dst));
> +        strcpy(sec_ip_src, inet_ntoa(spkt->ip->ip_src));
> +        strcpy(sec_ip_dst, inet_ntoa(spkt->ip->ip_dst));
> +
> +        trace_colo_compare_ip_info(ppkt->size, pri_ip_src,
> +                                   pri_ip_dst, spkt->size,
> +                                   sec_ip_src, sec_ip_dst);
> +
> +        trace_colo_compare_tcp_info("pri tcp packet",
> +                                    ntohl(ptcp->th_seq),
> +                                    ntohl(ptcp->th_ack),
> +                                    res, ptcp->th_flags,
> +                                    ppkt->size);
> +
> +        trace_colo_compare_tcp_info("sec tcp packet",
> +                                    ntohl(stcp->th_seq),
> +                                    ntohl(stcp->th_ack),
> +                                    res, stcp->th_flags,
> +                                    spkt->size);
>   
>           qemu_hexdump((char *)ppkt->data, stderr,
>                        "colo-compare ppkt", ppkt->size);
> diff --git a/net/trace-events b/net/trace-events
> index 35198bc..247e5c0 100644
> --- a/net/trace-events
> +++ b/net/trace-events
> @@ -13,8 +13,7 @@ colo_compare_icmp_miscompare(const char *sta, int size) ": %s = %d"
>   colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, const char *stc, const char *std) "ppkt size = %d, ip_src = %s, ip_dst = %s, spkt size = %d, ip_src = %s, ip_dst = %s"
>   colo_old_packet_check_found(int64_t old_time) "%" PRId64
>   colo_compare_miscompare(void) ""
> -colo_compare_pkt_info_src(const char *src, uint32_t sseq, uint32_t sack, int res, uint32_t sflag, int ssize) "src/dst: %s s: seq/ack=%u/%u res=%d flags=%x spkt_size: %d\n"
> -colo_compare_pkt_info_dst(const char *dst, uint32_t dseq, uint32_t dack, int res, uint32_t dflag, int dsize) "src/dst: %s d: seq/ack=%u/%u res=%d flags=%x dpkt_size: %d\n"
> +colo_compare_tcp_info(const char *pkt, uint32_t seq, uint32_t ack, int res, uint32_t flag, int size) "side: %s seq/ack= %u/%u res= %d flags= %x pkt_size: %d\n"
>   
>   # net/filter-rewriter.c
>   colo_filter_rewriter_debug(void) ""

Applied, thanks.