netdev - [PATCH net-next] net: caif: Use netif_rx_any

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 13 Feb 2021 18:05:14 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     netdev@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH net-next] net: caif: Use netif_rx_any_context().

The usage of in_interrupt() in non-core code is phased out. Ideally the
information of the calling context should be passed by the callers or the
functions be split as appropriate.

The attempt to consolidate the code by passing an arguemnt or by
distangling it failed due lack of knowledge about this driver and because
the call chains are hard to follow.

As a stop gap use netif_rx_any_context() which invokes the correct code path
depending on context and confines the in_interrupt() usage to core code.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 net/caif/chnl_net.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c
index 79b6a04d8eb61..fadc7c8a3107f 100644
--- a/net/caif/chnl_net.c
+++ b/net/caif/chnl_net.c
@@ -115,10 +115,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
 	else
 		skb->ip_summed = CHECKSUM_NONE;

-	if (in_interrupt())
-		netif_rx(skb);
-	else
-		netif_rx_ni(skb);
+	netif_rx_any_context(skb);

 	/* Update statistics. */
 	priv->netdev->stats.rx_packets++;
-- 
2.30.0