kni: fix build with Linux 5.18

Since commit 2655926aea9b (net: Remove netif_rx_any_context() and
netif_rx_ni().) in 5.18, netif_rx_ni() no longer exists as netif_rx()
can be called from any context. So define HAVE_NETIF_RX_NI for older
releases and call the appropriate function in kni_net.

netif_rx_ni() must be used on older kernel since netif_rx() might
might lead to deadlocks or other problems there.

Cc: stable@dpdk.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
index 6647856..0db29a4 100644 (file)
--- a/kernel/linux/kni/compat.h
+++ b/kernel/linux/kni/compat.h
@@ -141,3 +141,7 @@
 #if KERNEL_VERSION(5, 9, 0) > LINUX_VERSION_CODE
 #define HAVE_TSK_IN_GUP
 #endif
+
+#if KERNEL_VERSION(5, 18, 0) > LINUX_VERSION_CODE
+#define HAVE_NETIF_RX_NI
+#endif

diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c
index 29e5b9e..a8b092b 100644 (file)
--- a/kernel/linux/kni/kni_net.c
+++ b/kernel/linux/kni/kni_net.c
@@ -441,7 +441,11 @@ kni_net_rx_normal(struct kni_dev *kni)
                skb->ip_summed = CHECKSUM_UNNECESSARY;
 
                /* Call netif interface */
+#ifdef HAVE_NETIF_RX_NI
                netif_rx_ni(skb);
+#else
+               netif_rx(skb);
+#else
 
                /* Update statistics */
                dev->stats.rx_bytes += len;