From: Andreas Schultz <aschultz@tpip•net>
To: pablo <pablo@netfilter•org>
Cc: netdev <netdev@vger•kernel.org>, laforge <laforge@gnumonks•org>,
Lionel Gauthier <Lionel.Gauthier@eurecom•fr>,
openbsc <openbsc@lists•osmocom.org>
Subject: Re: [PATCH net-next v2 5/6] gtp: add socket to pdp context
Date: Thu, 2 Feb 2017 15:12:55 +0100 (CET) [thread overview]
Message-ID: <858150010.730228.1486044775198.JavaMail.zimbra@tpip.net> (raw)
In-Reply-To: <20170202135656.GA23901@salvia>
Hi,
----- On Feb 2, 2017, at 2:56 PM, pablo pablo@netfilter•org wrote:
> On Mon, Jan 30, 2017 at 05:37:12PM +0100, Andreas Schultz wrote:
>> Having the socket present in context simplifies the sending logic.
>> It also fixes the invalid assumption that we have to use the same
>> sending socket for all client IP's on a specific gtp interface.
>>
>> Signed-off-by: Andreas Schultz <aschultz@tpip•net>
>> ---
>> drivers/net/gtp.c | 72 ++++++++++++++++++++++++++++++-------------------------
>> 1 file changed, 39 insertions(+), 33 deletions(-)
>>
>> diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
>> index 68c6c9b..ff00597 100644
>> --- a/drivers/net/gtp.c
>> +++ b/drivers/net/gtp.c
> [...]
>> @@ -984,16 +966,26 @@ static int ipv4_pdp_add(struct gtp_dev *gtp, struct
>> genl_info *info)
>> return 0;
>> }
>>
>> +static void pdp_context_free(struct rcu_head *head)
>> +{
>> + struct pdp_ctx *pctx = container_of(head, struct pdp_ctx, rcu_head);
>> +
>> + sock_put(pctx->sk);
>> + kfree(pctx);
>> +}
>> +
>> static void pdp_context_delete(struct pdp_ctx *pctx)
>> {
>> hlist_del_rcu(&pctx->hlist_tid);
>> hlist_del_rcu(&pctx->hlist_addr);
>> - kfree(pctx);
>> + call_rcu(&pctx->rcu_head, pdp_context_free);
>
> This is fixing incorrect rcu conversion in 4/6. Please, fix this there.
Ehm, right, but the kfree in 4/6 could have been a kfree_rcu instead without
the call_rcu.
Do you prefer to introduce the call_rcu in 4/6 and then just add the sock_put
in this patch or should I change 4/6 to kfree_rcu and do the call_rcu
conversion here?
Andreas
next prev parent reply other threads:[~2017-02-02 14:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 16:37 [PATCH net-next v2 0/6] gtp: misc improvements Andreas Schultz
2017-01-30 16:37 ` [PATCH net-next v2 1/6] gtp: make GTP sockets in gtp_newlink optional Andreas Schultz
2017-02-02 14:10 ` Pablo Neira Ayuso
2017-02-02 14:30 ` Andreas Schultz
2017-02-02 14:32 ` Pablo Neira Ayuso
2017-02-06 13:51 ` Harald Welte
2017-01-30 16:37 ` [PATCH net-next v2 2/6] gtp: merge gtp_get_net and gtp_genl_find_dev Andreas Schultz
2017-02-06 13:55 ` Harald Welte
2017-02-13 14:13 ` Andreas Schultz
2017-02-13 14:51 ` Pablo Neira Ayuso
2017-01-30 16:37 ` [PATCH net-next v2 3/6] gtp: unify genl_find_pdp and prepare for per socket lookup Andreas Schultz
2017-02-02 14:19 ` Pablo Neira Ayuso
2017-02-02 14:27 ` Andreas Schultz
2017-02-02 14:31 ` Pablo Neira Ayuso
2017-02-06 13:56 ` Harald Welte
2017-01-30 16:37 ` [PATCH net-next v2 4/6] gtp: consolidate pdp context destruction into helper Andreas Schultz
2017-02-06 13:58 ` Harald Welte
2017-02-13 14:14 ` Andreas Schultz
2017-01-30 16:37 ` [PATCH net-next v2 5/6] gtp: add socket to pdp context Andreas Schultz
2017-02-02 13:56 ` Pablo Neira Ayuso
2017-02-02 14:12 ` Andreas Schultz [this message]
2017-02-02 14:28 ` Pablo Neira Ayuso
2017-02-02 14:38 ` Andreas Schultz
2017-02-02 14:46 ` Pablo Neira Ayuso
2017-02-02 15:07 ` Andreas Schultz
2017-02-06 14:04 ` Harald Welte
2017-01-30 16:37 ` [PATCH net-next v2 6/6] gtp: consolidate gtp socket rx path Andreas Schultz
2017-01-31 18:05 ` [PATCH net-next v2 0/6] gtp: misc improvements David Miller
2017-02-06 13:46 ` Harald Welte
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