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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 2/9] net: sched: act_sample: add action cookie to sample Date: Mon, 3 Jun 2024 20:56:36 +0200 Message-ID: <20240603185647.2310748-3-amorenoz@redhat.com> In-Reply-To: <20240603185647.2310748-1-amorenoz@redhat.com> References: <20240603185647.2310748-1-amorenoz@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Patchwork-Delegate: kuba@kernel.org If the action has a user_cookie, pass it along to the sample so it can be easily identified. Signed-off-by: Adrian Moreno Reviewed-by: Simon Horman --- net/sched/act_sample.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c index a69b53d54039..5c3f86ec964a 100644 --- a/net/sched/act_sample.c +++ b/net/sched/act_sample.c @@ -165,9 +165,11 @@ TC_INDIRECT_SCOPE int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a, struct tcf_result *res) { + u8 cookie_data[TC_COOKIE_MAX_SIZE] = {}; struct tcf_sample *s = to_sample(a); struct psample_group *psample_group; struct psample_metadata md = {}; + struct tc_cookie *user_cookie; int retval; tcf_lastuse_update(&s->tcf_tm); @@ -189,6 +191,16 @@ TC_INDIRECT_SCOPE int tcf_sample_act(struct sk_buff *skb, if (skb_at_tc_ingress(skb) && tcf_sample_dev_ok_push(skb->dev)) skb_push(skb, skb->mac_len); + rcu_read_lock(); + user_cookie = rcu_dereference(a->user_cookie); + if (user_cookie) { + memcpy(cookie_data, user_cookie->data, + user_cookie->len); + md.user_cookie = cookie_data; + md.user_cookie_len = user_cookie->len; + } + rcu_read_unlock(); + md.trunc_size = s->truncate ? s->trunc_size : skb->len; psample_sample_packet(psample_group, skb, s->rate, &md);