[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <54919C54.1050009@gmail.com>
Date: Wed, 17 Dec 2014 08:08:04 -0700
From: David Ahern <lxhacker68@...il.com>
To: Martin KaFai Lau <kafai@...com>, netdev@...r.kernel.org
CC: "David S. Miller" <davem@...emloft.net>,
Hannes Frederic Sowa <hannes@...essinduktion.org>,
Steven Rostedt <rostedt@...dmis.org>,
Lawrence Brakmo <brakmo@...com>, Josef Bacik <jbacik@...com>,
Kernel Team <Kernel-team@...com>
Subject: Re: [RFC PATCH net-next 1/5] tcp: Add TCP TRACE_EVENTs
On 12/14/14 6:56 PM, Martin KaFai Lau wrote:
> +DECLARE_EVENT_CLASS(tcp,
> + TP_PROTO(struct sock *sk),
> + TP_ARGS(sk),
> + TP_STRUCT__entry(
> + __field(u8, ipv6)
> + __array(u8, laddr, 16)
> + __array(u8, raddr, 16)
You could store the addresses as
union {
struct sockaddr_in v4;
struct sockaddr_in6 v6;
} sa;
and then use:
> + TP_printk("local=%s:%d remote=%s:%d snd_cwnd=%u mss_cache=%u "
> + "ssthresh=%u srtt_us=%llu rto_ms=%u",
%pIS to print the addresses in a more readable format than what
__print_hex will show.
I have a patch to perf (and by extension it applies to trace-cmd) to
handle pI4, pI6 and pI6c. It readily extends to pIS.
David
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists