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From: Ferruh Yigit <ferruh.yigit@amd.com>
To: David Marchand <david.marchand@redhat.com>
Cc: dev <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Xiaoyun Li <xiaoyun.li@intel.com>,
	 Aman Singh <aman.deep.singh@intel.com>,
	Yuying Zhang <yuying.zhang@intel.com>,
	Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH 2/6] app/testpmd: register driver specific commands
Date: Tue, 24 May 2022 12:43:53 +0100
Message-ID: <63b3fadd-f700-ae30-8174-102d91a0794d@amd.com> (raw)
In-Reply-To: <CAJFAV8zSvkB3RMaDwpc6i1sjSpzOA8=6ZbNCtko22r6zuUqaGA@mail.gmail.com>

On 5/24/2022 11:53 AM, David Marchand wrote:
> [CAUTION: External Email]
> 
> On Mon, May 23, 2022 at 8:10 PM Ferruh Yigit <ferruh.yigit@amd.com> wrote:
>>
>> On 5/23/2022 8:10 AM, David Marchand wrote:
>>> +int
>>> +init_cmdline(void)
>>> +{
>>> +       struct testpmd_commands *c;
>>> +       cmdline_parse_ctx_t *ctx;
>>> +       unsigned int count = 0;
>>> +       unsigned int i;
>>> +
>>> +       /* initialize non-constant commands */
>>> +       cmd_set_fwd_mode_init();
>>> +       cmd_set_fwd_retry_mode_init();
>>> +
>>> +       main_ctx = NULL;
>>> +       for (i = 0; builtin_ctx[i] != NULL; i++) {
>>> +               ctx = realloc(main_ctx, (count + i + 1) * sizeof(*ctx));
>>> +               if (ctx == NULL)
>>> +                       goto err;
>>> +               main_ctx = ctx;
>>
>> Instead of 'realloc()', check and assign pointer in each entry, what do
>> you think about first calculate the size and alloc once, both for
>> 'builtin_ctx' & driver specific command?
>> But of course trade off is to loop twice in that case.
> 
> Yes, I hesitated because of the duplicated loop (and I found no
> "elegant" macro).
> I'm ok with the suggestion, this makes the code simpler.
> 
> 
> int
> init_cmdline(void)
> {
>          struct testpmd_commands *c;
>          unsigned int count;
>          unsigned int i;
> 
>          /* initialize non-constant commands */
>          cmd_set_fwd_mode_init();
>          cmd_set_fwd_retry_mode_init();
> 
>          count = 0;
>          for (i = 0; builtin_ctx[i] != NULL; i++, count++)
>                  ;
>          TAILQ_FOREACH(c, &commands_head, next) {
>                  for (i = 0; c->commands[i].ctx != NULL; i++, count++)
>                          ;
>          }
> 
>          /* cmdline expects a NULL terminated array */
>          main_ctx = calloc(count + 1, sizeof(main_ctx[0]));
>          if (main_ctx == NULL)
>                  return -1;
> 
>          count = 0;
>          for (i = 0; builtin_ctx[i] != NULL; i++, count++)
>                  main_ctx[count] = builtin_ctx[i];
>          TAILQ_FOREACH(c, &commands_head, next) {
>                  for (i = 0; c->commands[i].ctx != NULL; i++, count++)
>                          main_ctx[count] = c->commands[i].ctx;
>          }
> 
>          return 0;
> }
> 

ack


  reply	other threads:[~2022-05-24 11:43 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13  7:57 [RFC PATCH 0/4] Split driver specific commands out of testpmd David Marchand
2022-05-13  7:57 ` [RFC PATCH 1/4] app/testpmd: register driver specific commands David Marchand
2022-05-13 10:30   ` David Marchand
2022-05-13  7:57 ` [RFC PATCH 2/4] net/bonding: move testpmd commands David Marchand
2022-05-13 10:09   ` Min Hu (Connor)
2022-05-18 17:24     ` David Marchand
2022-05-18 23:25       ` Konstantin Ananyev
2022-05-19  7:40         ` David Marchand
2022-05-19 11:26           ` Thomas Monjalon
2022-05-20  6:59             ` Andrew Rybchenko
2022-05-24  9:40               ` Konstantin Ananyev
2022-05-24 10:15                 ` Thomas Monjalon
2022-05-24 22:41                   ` Konstantin Ananyev
2022-05-13  7:57 ` [RFC PATCH 3/4] net/i40e: " David Marchand
2022-05-13  7:57 ` [RFC PATCH 4/4] net/ixgbe: " David Marchand
2022-05-18 19:46 ` [RFC PATCH v2 0/5] Split driver specific commands out of testpmd David Marchand
2022-05-18 19:46   ` [RFC PATCH v2 1/5] app/testpmd: mark cmdline symbols as static David Marchand
2022-05-20  6:28     ` Andrew Rybchenko
2022-05-18 19:46   ` [RFC PATCH v2 2/5] app/testpmd: register driver specific commands David Marchand
2022-05-20  6:55     ` Andrew Rybchenko
2022-05-18 19:46   ` [RFC PATCH v2 3/5] net/bonding: move testpmd commands David Marchand
2022-05-20  6:55     ` Andrew Rybchenko
2022-05-18 19:46   ` [RFC PATCH v2 4/5] net/i40e: " David Marchand
2022-05-18 19:46   ` [RFC PATCH v2 5/5] net/ixgbe: " David Marchand
2022-05-20  7:04   ` [RFC PATCH v2 0/5] Split driver specific commands out of testpmd Andrew Rybchenko
2022-05-23  7:10 ` [PATCH 0/6] " David Marchand
2022-05-23  7:10   ` [PATCH 1/6] app/testpmd: mark most cmdline symbols as static David Marchand
2022-05-23 10:19     ` Dumitrescu, Cristian
2022-05-23 18:09       ` Ferruh Yigit
2022-05-23  7:10   ` [PATCH 2/6] app/testpmd: register driver specific commands David Marchand
2022-05-23 18:10     ` Ferruh Yigit
2022-05-24 10:53       ` David Marchand
2022-05-24 11:43         ` Ferruh Yigit [this message]
2022-05-24 17:21     ` Thomas Monjalon
2022-05-24 17:44       ` David Marchand
2022-05-24 17:51         ` Thomas Monjalon
2022-05-23  7:10   ` [PATCH 3/6] net/bonding: move testpmd commands David Marchand
2022-05-23 18:10     ` Ferruh Yigit
2022-06-17  5:06     ` [PATCH v2] " David Marchand
2022-06-20 17:53       ` Ferruh Yigit
2022-05-23  7:10   ` [PATCH 4/6] net/i40e: " David Marchand
2022-06-17  5:07     ` [PATCH v2] " David Marchand
2022-06-20 17:53       ` Ferruh Yigit
2022-05-23  7:10   ` [PATCH 5/6] app/testpmd: drop ixgbe bypass commands David Marchand
2022-05-23 18:10     ` Ferruh Yigit
2022-06-17  5:07     ` [PATCH v2 1/3] app/testpmd: restore " David Marchand
2022-06-17  5:07       ` [PATCH v2 2/3] net/ixgbe: move testpmd commands David Marchand
2022-06-17  5:07       ` [PATCH v2 3/3] net/ixgbe: move bypass init in a testpmd command David Marchand
2022-06-20 19:04         ` Ferruh Yigit
2022-06-23 12:35           ` Zhang, Qi Z
2022-07-21  8:05     ` [PATCH v3 1/3] app/testpmd: restore ixgbe bypass commands David Marchand
2022-07-21  8:05       ` [PATCH v3 2/3] net/ixgbe: move testpmd commands David Marchand
2022-07-21  8:05       ` [PATCH v3 3/3] net/ixgbe: move bypass init in a testpmd command David Marchand
2022-05-23  7:10   ` [PATCH 6/6] net/ixgbe: move testpmd commands David Marchand
2022-05-23 18:09   ` [PATCH 0/6] Split driver specific commands out of testpmd Ferruh Yigit
2022-05-24 20:06 ` [PATCH v2 0/2] " David Marchand
2022-05-24 20:06   ` [PATCH v2 1/2] app/testpmd: mark most cmdline symbols as static David Marchand
2022-05-31 15:15     ` Andrew Rybchenko
2022-05-24 20:06   ` [PATCH v2 2/2] app/testpmd: register driver specific commands David Marchand
2022-05-24 20:28     ` Thomas Monjalon
2022-05-31 15:14       ` Andrew Rybchenko
2022-05-31 15:18         ` David Marchand
2022-05-31 15:18   ` [PATCH v2 0/2] Split driver specific commands out of testpmd Andrew Rybchenko

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